Wenwei Tao [Sun, 6 Dec 2015 10:25:45 +0000 (11:25 +0100)]
lightnvm: refactor spin_unlock in gennvm_get_blk
The spin_unlock is duplicated multiple times. Jump to a single unlock
to improve the code flow.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Wenwei Tao [Sun, 6 Dec 2015 10:25:44 +0000 (11:25 +0100)]
lightnvm: put blks when luns configure failed
Put the allocated blocks back to the free list
when the luns configure failed, to make these
blocks useable to others.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Wenwei Tao [Sun, 6 Dec 2015 10:25:43 +0000 (11:25 +0100)]
lightnvm: use flags in rrpc_get_blk
rrpc_get_blk use constant 0 as the input parameter
of nvm_get_blk, this may result in getting gc block
failed unexpectedly.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ilya Dryomov [Fri, 20 Nov 2015 21:22:34 +0000 (22:22 +0100)]
block: detach bdev inode from its wb in __blkdev_put()
Since
52ebea749aae ("writeback: make backing_dev_info host
cgroup-specific bdi_writebacks") inode, at some point in its lifetime,
gets attached to a wb (struct bdi_writeback). Detaching happens on
evict, in inode_detach_wb() called from __destroy_inode(), and involves
updating wb.
However, detaching an internal bdev inode from its wb in
__destroy_inode() is too late. Its bdi and by extension root wb are
embedded into struct request_queue, which has different lifetime rules
and can be freed long before the final bdput() is called (can be from
__fput() of a corresponding /dev inode, through dput() - evict() -
bd_forget(). bdevs hold onto the underlying disk/queue pair only while
opened; as soon as bdev is closed all bets are off. In fact,
disk/queue can be gone before __blkdev_put() even returns:
1499 static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
1500 {
...
1518 if (bdev->bd_contains == bdev) {
1519 if (disk->fops->release)
1520 disk->fops->release(disk, mode);
[ Driver puts its references to disk/queue ]
1521 }
1522 if (!bdev->bd_openers) {
1523 struct module *owner = disk->fops->owner;
1524
1525 disk_put_part(bdev->bd_part);
1526 bdev->bd_part = NULL;
1527 bdev->bd_disk = NULL;
1528 if (bdev != bdev->bd_contains)
1529 victim = bdev->bd_contains;
1530 bdev->bd_contains = NULL;
1531
1532 put_disk(disk);
[ We put ours, the queue is gone
The last bdput() would result in a write to invalid memory ]
1533 module_put(owner);
...
1539 }
Since bdev inodes are special anyway, detach them in __blkdev_put()
after clearing inode's dirty bits, turning the problematic
inode_detach_wb() in __destroy_inode() into a noop.
add_disk() grabs its disk->queue since
523e1d399ce0 ("block: make
gendisk hold a reference to its queue"), so the old ->release comment
is removed in favor of the new inode_detach_wb() comment.
Cc: stable@vger.kernel.org # 4.2+, needs backporting
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Tested-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Ken Xue [Tue, 1 Dec 2015 06:45:46 +0000 (14:45 +0800)]
SCSI: Fix NULL pointer dereference in runtime PM
The routines in scsi_pm.c assume that if a runtime-PM callback is
invoked for a SCSI device, it can only mean that the device's driver
has asked the block layer to handle the runtime power management (by
calling blk_pm_runtime_init(), which among other things sets q->dev).
However, this assumption turns out to be wrong for things like the ses
driver. Normally ses devices are not allowed to do runtime PM, but
userspace can override this setting. If this happens, the kernel gets
a NULL pointer dereference when blk_post_runtime_resume() tries to use
the uninitialized q->dev pointer.
This patch fixes the problem by checking q->dev in block layer before
handle runtime PM. Since ses doesn't define any PM callbacks and call
blk_pm_runtime_init(), the crash won't occur.
This fixes Bugzilla #101371.
https://bugzilla.kernel.org/show_bug.cgi?id=101371
More discussion can be found from below link.
http://marc.info/?l=linux-scsi&m=
144163730531875&w=2
Signed-off-by: Ken Xue <Ken.Xue@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Xiangliang Yu <Xiangliang.Yu@amd.com>
Cc: James E.J. Bottomley <JBottomley@odin.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Michael Terry <Michael.terry@canonical.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Fri, 4 Dec 2015 00:02:46 +0000 (16:02 -0800)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
"A lot of Thanksgiving turkey leftovers accumulated, here goes:
1) Fix bluetooth l2cap_chan object leak, from Johan Hedberg.
2) IDs for some new iwlwifi chips, from Oren Givon.
3) Fix rtlwifi lockups on boot, from Larry Finger.
4) Fix memory leak in fm10k, from Stephen Hemminger.
5) We have a route leak in the ipv6 tunnel infrastructure, fix from
Paolo Abeni.
6) Fix buffer pointer handling in arm64 bpf JIT,f rom Zi Shen Lim.
7) Wrong lockdep annotations in tcp md5 support, fix from Eric
Dumazet.
8) Work around some middle boxes which prevent proper handling of TCP
Fast Open, from Yuchung Cheng.
9) TCP repair can do huge kmalloc() requests, build paged SKBs
instead. From Eric Dumazet.
10) Fix msg_controllen overflow in scm_detach_fds, from Daniel
Borkmann.
11) Fix device leaks on ipmr table destruction in ipv4 and ipv6, from
Nikolay Aleksandrov.
12) Fix use after free in epoll with AF_UNIX sockets, from Rainer
Weikusat.
13) Fix double free in VRF code, from Nikolay Aleksandrov.
14) Fix skb leaks on socket receive queue in tipc, from Ying Xue.
15) Fix ifup/ifdown crach in xgene driver, from Iyappan Subramanian.
16) Fix clearing of persistent array maps in bpf, from Daniel
Borkmann.
17) In TCP, for the cross-SYN case, we don't initialize tp->copied_seq
early enough. From Eric Dumazet.
18) Fix out of bounds accesses in bpf array implementation when
updating elements, from Daniel Borkmann.
19) Fill gaps in RCU protection of np->opt in ipv6 stack, from Eric
Dumazet.
20) When dumping proxy neigh entries, we have to accomodate NULL
device pointers properly, from Konstantin Khlebnikov.
21) SCTP doesn't release all ipv6 socket resources properly, fix from
Eric Dumazet.
22) Prevent underflows of sch->q.qlen for multiqueue packet
schedulers, also from Eric Dumazet.
23) Fix MAC and unicast list handling in bnxt_en driver, from Jeffrey
Huang and Michael Chan.
24) Don't actively scan radar channels, from Antonio Quartulli"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (110 commits)
net: phy: reset only targeted phy
bnxt_en: Setup uc_list mac filters after resetting the chip.
bnxt_en: enforce proper storing of MAC address
bnxt_en: Fixed incorrect implementation of ndo_set_mac_address
net: lpc_eth: remove irq > NR_IRQS check from probe()
net_sched: fix qdisc_tree_decrease_qlen() races
openvswitch: fix hangup on vxlan/gre/geneve device deletion
ipv4: igmp: Allow removing groups from a removed interface
ipv6: sctp: implement sctp_v6_destroy_sock()
arm64: bpf: add 'store immediate' instruction
ipv6: kill sk_dst_lock
ipv6: sctp: add rcu protection around np->opt
net/neighbour: fix crash at dumping device-agnostic proxy entries
sctp: use GFP_USER for user-controlled kmalloc
sctp: convert sack_needed and sack_generation to bits
ipv6: add complete rcu protection around np->opt
bpf: fix allocation warnings in bpf maps and integer overflow
mvebu: dts: enable IP checksum with jumbo frames for Armada 38x on Port0
net: mvneta: enable setting custom TX IP checksum limit
net: mvneta: fix error path for building skb
...
Linus Torvalds [Thu, 3 Dec 2015 23:45:16 +0000 (15:45 -0800)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A collection of fixes from this series. The most important here is a
regression fix for an issue that some folks would hit in blk-merge.c,
and the NVMe queue depth limit for the screwed up Apple "nvme"
controller.
In more detail, this pull request contains:
- a set of fixes for null_blk, including a fix for a few corner cases
where we could hang the device. From Arianna and Paolo.
- lightnvm:
- A build improvement from Keith.
- Update the qemu pci id detection from Matias.
- Error handling fixes for leaks and other little fixes from
Sudip and Wenwei.
- fix from Eric where BLKRRPART would not return EBUSY for whole
device mounts, only when partitions were mounted.
- fix from Jan Kara, where EOF O_DIRECT reads would return
negatively.
- remove check for rq_mergeable() when checking limits for cloned
requests. The check doesn't make any sense. It's assuming that
since NOMERGE is set on the request that we don't have to
recalculate limits since the request didn't change, but that's not
true if the request has been redirected. From Hannes.
- correctly get the bio front segment value set for single segment
bio's, fixing a BUG() in blk-merge. From Ming"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvme: temporary fix for Apple controller reset
null_blk: change type of completion_nsec to unsigned long
null_blk: guarantee device restart in all irq modes
null_blk: set a separate timer for each command
blk-merge: fix computing bio->bi_seg_front_size in case of single segment
direct-io: Fix negative return from dio read beyond eof
block: Always check queue limits for cloned requests
lightnvm: missing nvm_lock acquire
lightnvm: unconverted ppa returned in get_bb_tbl
lightnvm: refactor and change vendor id for qemu
lightnvm: do device max sectors boundary check first
lightnvm: fix ioctl memory leaks
lightnvm: free memory when gennvm register fails
lightnvm: Simplify config when disabled
Return EBUSY from BLKRRPART for mounted whole-dev fs
Linus Torvalds [Thu, 3 Dec 2015 23:23:17 +0000 (15:23 -0800)]
Merge tag 'trace-v4.4-rc3' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"During the merge window I added a new file that is used to filter
trace events on pids. It filters all events where only tasks with
their pid in that file exists. It also handles the sched_switch and
sched_wakeup trace events where the current task does not have its pid
in the file, but the task either being switched to or awaken does.
Unfortunately, I forgot about sched_wakeup_new and sched_waking. Both
of these tracepoints use the same class as the sched_wakeup
tracepoint, and they too should be included in what gets filtered by
the set_event_pid file"
* tag 'trace-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Add sched_wakeup_new and sched_waking tracepoints for pid filter
David S. Miller [Thu, 3 Dec 2015 20:56:22 +0000 (15:56 -0500)]
Merge tag 'mac80211-for-davem-2015-12-02' of git://git./linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A small set of fixes for 4.4:
* fix scanning in mac80211 to not actively scan radar
channels (from Antonio)
* fix uninitialized variable in remain-on-channel that
could lead to treating frame TX as remain-on-channel
and not sending the frame at all
* remove NL80211_FEATURE_FULL_AP_CLIENT_STATE again, it
was broken and needs more work, we'll enable it later
* fix call_rcu() induced use-after-reset/free in mesh
(that was suddenly causing issues in certain tests)
* always request block-ack window size 64 as we found
some APs will otherwise crash (really ...)
* fix P2P-Device teardown sequence to avoid restarting
with uninitialized data
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jérôme Pouiller [Thu, 3 Dec 2015 09:02:35 +0000 (10:02 +0100)]
net: phy: reset only targeted phy
It is possible to address another chip on same MDIO bus. The case is
correctly handled for media advertising. It is taken into account
only if mii_data->phy_id == phydev->addr. However, this condition
was missing for reset case.
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 3 Dec 2015 20:07:14 +0000 (15:07 -0500)]
Merge branch 'bnxt_en-fixes'
Michael Chan says:
====================
bnxt_en: set mac address and uc_list bug fixes.
Fix ndo_set_mac_address() for PF and VF.
Re-apply uc_list after chip reset.
v2: Fix compile error if CONFIG_BNXT_SRIOV is not set.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Wed, 2 Dec 2015 06:54:08 +0000 (01:54 -0500)]
bnxt_en: Setup uc_list mac filters after resetting the chip.
Call bnxt_cfg_rx_mode() in bnxt_init_chip() to setup uc_list and
mc_list mac address filters. Before the patch, uc_list is not
setup again after chip reset (such as ethtool ring size change)
and macvlans don't work any more after that.
Modify bnxt_cfg_rx_mode() to return error codes appropriately so
that the init chip sequence can detect any failures.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeffrey Huang [Wed, 2 Dec 2015 06:54:07 +0000 (01:54 -0500)]
bnxt_en: enforce proper storing of MAC address
For PF, the bp->pf.mac_addr always holds the permanent MAC
addr assigned by the HW. For VF, the bp->vf.mac_addr always
holds the administrator assigned VF MAC addr. The random
generated VF MAC addr should never get stored to bp->vf.mac_addr.
This way, when the VF wants to change the MAC address, we can tell
if the adminstrator has already set it and disallow the VF from
changing it.
v2: Fix compile error if CONFIG_BNXT_SRIOV is not set.
Signed-off-by: Jeffrey Huang <huangjw@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeffrey Huang [Wed, 2 Dec 2015 06:54:06 +0000 (01:54 -0500)]
bnxt_en: Fixed incorrect implementation of ndo_set_mac_address
The existing ndo_set_mac_address only copies the new MAC addr
and didn't set the new MAC addr to the HW. The correct way is
to delete the existing default MAC filter from HW and add
the new one. Because of RFS filters are also dependent on the
default mac filter l2 context, the driver must go thru
close_nic() to delete the default MAC and RFS filters, then
open_nic() to set the default MAC address to HW.
Signed-off-by: Jeffrey Huang <huangjw@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Zapolskiy [Wed, 2 Dec 2015 06:12:13 +0000 (08:12 +0200)]
net: lpc_eth: remove irq > NR_IRQS check from probe()
If the driver is used on an ARM platform with SPARSE_IRQ defined,
semantics of NR_IRQS is different (minimal value of virtual irqs) and
by default it is set to 16, see arch/arm/include/asm/irq.h.
This value may be less than the actual number of virtual irqs, which
may break the driver initialization. The check removal allows to use
the driver on such a platform, and, if irq controller driver works
correctly, the check is not needed on legacy platforms.
Fixes a runtime problem:
lpc-eth
31060000.ethernet: error getting resources.
lpc_eth: lpc-eth: not found (-6).
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Wed, 2 Dec 2015 04:08:51 +0000 (20:08 -0800)]
net_sched: fix qdisc_tree_decrease_qlen() races
qdisc_tree_decrease_qlen() suffers from two problems on multiqueue
devices.
One problem is that it updates sch->q.qlen and sch->qstats.drops
on the mq/mqprio root qdisc, while it should not : Daniele
reported underflows errors :
[ 681.774821] PAX: sch->q.qlen: 0 n: 1
[ 681.774825] PAX: size overflow detected in function qdisc_tree_decrease_qlen net/sched/sch_api.c:769 cicus.693_49 min, count: 72, decl: qlen; num: 0; context: sk_buff_head;
[ 681.774954] CPU: 2 PID: 19 Comm: ksoftirqd/2 Tainted: G O 4.2.6.
201511282239-1-grsec #1
[ 681.774955] Hardware name: ASUSTeK COMPUTER INC. X302LJ/X302LJ, BIOS X302LJ.202 03/05/2015
[ 681.774956]
ffffffffa9a04863 0000000000000000 0000000000000000 ffffffffa990ff7c
[ 681.774959]
ffffc90000d3bc38 ffffffffa95d2810 0000000000000007 ffffffffa991002b
[ 681.774960]
ffffc90000d3bc68 ffffffffa91a44f4 0000000000000001 0000000000000001
[ 681.774962] Call Trace:
[ 681.774967] [<
ffffffffa95d2810>] dump_stack+0x4c/0x7f
[ 681.774970] [<
ffffffffa91a44f4>] report_size_overflow+0x34/0x50
[ 681.774972] [<
ffffffffa94d17e2>] qdisc_tree_decrease_qlen+0x152/0x160
[ 681.774976] [<
ffffffffc02694b1>] fq_codel_dequeue+0x7b1/0x820 [sch_fq_codel]
[ 681.774978] [<
ffffffffc02680a0>] ? qdisc_peek_dequeued+0xa0/0xa0 [sch_fq_codel]
[ 681.774980] [<
ffffffffa94cd92d>] __qdisc_run+0x4d/0x1d0
[ 681.774983] [<
ffffffffa949b2b2>] net_tx_action+0xc2/0x160
[ 681.774985] [<
ffffffffa90664c1>] __do_softirq+0xf1/0x200
[ 681.774987] [<
ffffffffa90665ee>] run_ksoftirqd+0x1e/0x30
[ 681.774989] [<
ffffffffa90896b0>] smpboot_thread_fn+0x150/0x260
[ 681.774991] [<
ffffffffa9089560>] ? sort_range+0x40/0x40
[ 681.774992] [<
ffffffffa9085fe4>] kthread+0xe4/0x100
[ 681.774994] [<
ffffffffa9085f00>] ? kthread_worker_fn+0x170/0x170
[ 681.774995] [<
ffffffffa95d8d1e>] ret_from_fork+0x3e/0x70
mq/mqprio have their own ways to report qlen/drops by folding stats on
all their queues, with appropriate locking.
A second problem is that qdisc_tree_decrease_qlen() calls qdisc_lookup()
without proper locking : concurrent qdisc updates could corrupt the list
that qdisc_match_from_root() parses to find a qdisc given its handle.
Fix first problem adding a TCQ_F_NOPARENT qdisc flag that
qdisc_tree_decrease_qlen() can use to abort its tree traversal,
as soon as it meets a mq/mqprio qdisc children.
Second problem can be fixed by RCU protection.
Qdisc are already freed after RCU grace period, so qdisc_list_add() and
qdisc_list_del() simply have to use appropriate rcu list variants.
A future patch will add a per struct netdev_queue list anchor, so that
qdisc_tree_decrease_qlen() can have more efficient lookups.
Reported-by: Daniele Fucini <dfucini@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Cong Wang <cwang@twopensource.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Tue, 1 Dec 2015 17:33:36 +0000 (18:33 +0100)]
openvswitch: fix hangup on vxlan/gre/geneve device deletion
Each openvswitch tunnel vport (vxlan,gre,geneve) holds a reference
to the underlying tunnel device, but never released it when such
device is deleted.
Deleting the underlying device via the ip tool cause the kernel to
hangup in the netdev_wait_allrefs() loop.
This commit ensure that on device unregistration dp_detach_port_notify()
is called for all vports that hold the device reference, properly
releasing it.
Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device")
Fixes: b2acd1dc3949 ("openvswitch: Use regular GRE net_device instead of vport")
Fixes: 6b001e682e90 ("openvswitch: Use Geneve device.")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Flavio Leitner <fbl@sysclose.org>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Tue, 1 Dec 2015 15:31:08 +0000 (16:31 +0100)]
ipv4: igmp: Allow removing groups from a removed interface
When a multicast group is joined on a socket, a struct ip_mc_socklist
is appended to the sockets mc_list containing information about the
joined group.
If the interface is hot unplugged, this entry becomes stale. Prior to
commit
52ad353a5344f ("igmp: fix the problem when mc leave group") it
was possible to remove the stale entry by performing a
IP_DROP_MEMBERSHIP, passing either the old ifindex or ip address on
the interface. However, this fix enforces that the interface must
still exist. Thus with time, the number of stale entries grows, until
sysctl_igmp_max_memberships is reached and then it is not possible to
join and more groups.
The previous patch fixes an issue where a IP_DROP_MEMBERSHIP is
performed without specifying the interface, either by ifindex or ip
address. However here we do supply one of these. So loosen the
restriction on device existence to only apply when the interface has
not been specified. This then restores the ability to clean up the
stale entries.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Fixes: 52ad353a5344f "(igmp: fix the problem when mc leave group")
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 1 Dec 2015 15:20:07 +0000 (07:20 -0800)]
ipv6: sctp: implement sctp_v6_destroy_sock()
Dmitry Vyukov reported a memory leak using IPV6 SCTP sockets.
We need to call inet6_destroy_sock() to properly release
inet6 specific fields.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 3 Dec 2015 17:04:05 +0000 (12:04 -0500)]
Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth
Johan Hedberg says:
====================
pull request: bluetooth 2015-12-01
Here's a Bluetooth fix for the 4.4-rc series that fixes a memory leak of
the Security Manager L2CAP channel that'll happen for every LE
connection.
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Shi [Mon, 30 Nov 2015 22:24:07 +0000 (14:24 -0800)]
arm64: bpf: add 'store immediate' instruction
aarch64 doesn't have native store immediate instruction, such operation
has to be implemented by the below instruction sequence:
Load immediate to register
Store register
Signed-off-by: Yang Shi <yang.shi@linaro.org>
CC: Zi Shen Lim <zlim.lnx@gmail.com>
CC: Xi Wang <xi.wang@gmail.com>
Reviewed-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 3 Dec 2015 05:53:57 +0000 (21:53 -0800)]
ipv6: kill sk_dst_lock
While testing the np->opt RCU conversion, I found that UDP/IPv6 was
using a mixture of xchg() and sk_dst_lock to protect concurrent changes
to sk->sk_dst_cache, leading to possible corruptions and crashes.
ip6_sk_dst_lookup_flow() uses sk_dst_check() anyway, so the simplest
way to fix the mess is to remove sk_dst_lock completely, as we did for
IPv4.
__ip6_dst_store() and ip6_dst_store() share same implementation.
sk_setup_caps() being called with socket lock being held or not,
we have to use sk_dst_set() instead of __sk_dst_set()
Note that I had to move the "np->dst_cookie = rt6_get_cookie(rt);"
in ip6_dst_store() before the sk_setup_caps(sk, dst) call.
This is because ip6_dst_store() can be called from process context,
without any lock held.
As soon as the dst is installed in sk->sk_dst_cache, dst can be freed
from another cpu doing a concurrent ip6_dst_store()
Doing the dst dereference before doing the install is needed to make
sure no use after free would trigger.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 3 Dec 2015 05:48:14 +0000 (21:48 -0800)]
ipv6: sctp: add rcu protection around np->opt
This patch completes the work I did in commit
45f6fad84cc3
("ipv6: add complete rcu protection around np->opt"), as I missed
sctp part.
This simply makes sure np->opt is used with proper RCU locking
and accessors.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Konstantin Khlebnikov [Mon, 30 Nov 2015 22:14:48 +0000 (01:14 +0300)]
net/neighbour: fix crash at dumping device-agnostic proxy entries
Proxy entries could have null pointer to net-device.
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Fixes: 84920c1420e2 ("net: Allow ipv6 proxies and arp proxies be shown with iproute2")
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcelo Ricardo Leitner [Mon, 30 Nov 2015 16:32:54 +0000 (14:32 -0200)]
sctp: use GFP_USER for user-controlled kmalloc
Dmitry Vyukov reported that the user could trigger a kernel warning by
using a large len value for getsockopt SCTP_GET_LOCAL_ADDRS, as that
value directly affects the value used as a kmalloc() parameter.
This patch thus switches the allocation flags from all user-controllable
kmalloc size to GFP_USER to put some more restrictions on it and also
disables the warn, as they are not necessary.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcelo Ricardo Leitner [Mon, 30 Nov 2015 14:17:06 +0000 (12:17 -0200)]
sctp: convert sack_needed and sack_generation to bits
They don't need to be any bigger than that and with this we start a new
bitfield for tracking association runtime stuff, like zero window
situation.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 30 Nov 2015 03:37:57 +0000 (19:37 -0800)]
ipv6: add complete rcu protection around np->opt
This patch addresses multiple problems :
UDP/RAW sendmsg() need to get a stable struct ipv6_txoptions
while socket is not locked : Other threads can change np->opt
concurrently. Dmitry posted a syzkaller
(http://github.com/google/syzkaller) program desmonstrating
use-after-free.
Starting with TCP/DCCP lockless listeners, tcp_v6_syn_recv_sock()
and dccp_v6_request_recv_sock() also need to use RCU protection
to dereference np->opt once (before calling ipv6_dup_options())
This patch adds full RCU protection to np->opt
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexei Starovoitov [Mon, 30 Nov 2015 00:59:35 +0000 (16:59 -0800)]
bpf: fix allocation warnings in bpf maps and integer overflow
For large map->value_size the user space can trigger memory allocation warnings like:
WARNING: CPU: 2 PID: 11122 at mm/page_alloc.c:2989
__alloc_pages_nodemask+0x695/0x14e0()
Call Trace:
[< inline >] __dump_stack lib/dump_stack.c:15
[<
ffffffff82743b56>] dump_stack+0x68/0x92 lib/dump_stack.c:50
[<
ffffffff81244ec9>] warn_slowpath_common+0xd9/0x140 kernel/panic.c:460
[<
ffffffff812450f9>] warn_slowpath_null+0x29/0x30 kernel/panic.c:493
[< inline >] __alloc_pages_slowpath mm/page_alloc.c:2989
[<
ffffffff81554e95>] __alloc_pages_nodemask+0x695/0x14e0 mm/page_alloc.c:3235
[<
ffffffff816188fe>] alloc_pages_current+0xee/0x340 mm/mempolicy.c:2055
[< inline >] alloc_pages include/linux/gfp.h:451
[<
ffffffff81550706>] alloc_kmem_pages+0x16/0xf0 mm/page_alloc.c:3414
[<
ffffffff815a1c89>] kmalloc_order+0x19/0x60 mm/slab_common.c:1007
[<
ffffffff815a1cef>] kmalloc_order_trace+0x1f/0xa0 mm/slab_common.c:1018
[< inline >] kmalloc_large include/linux/slab.h:390
[<
ffffffff81627784>] __kmalloc+0x234/0x250 mm/slub.c:3525
[< inline >] kmalloc include/linux/slab.h:463
[< inline >] map_update_elem kernel/bpf/syscall.c:288
[< inline >] SYSC_bpf kernel/bpf/syscall.c:744
To avoid never succeeding kmalloc with order >= MAX_ORDER check that
elem->value_size and computed elem_size are within limits for both hash and
array type maps.
Also add __GFP_NOWARN to kmalloc(value_size | elem_size) to avoid OOM warnings.
Note kmalloc(key_size) is highly unlikely to trigger OOM, since key_size <= 512,
so keep those kmalloc-s as-is.
Large value_size can cause integer overflows in elem_size and map.pages
formulas, so check for that as well.
Fixes: aaac3ba95e4c ("bpf: charge user for creation of BPF maps and programs")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 3 Dec 2015 04:35:22 +0000 (23:35 -0500)]
Merge branch 'mvneta-fixes'
Marcin Wojtas says:
====================
Marvell Armada XP/370/38X Neta fixes
I'm sending v4 with corrected commit log of the last patch, in order to
avoid possible conflicts between the branches as suggested by Gregory
Clement.
Best regards,
Marcin Wojtas
Changes from v4:
* Correct commit log of patch 6/6
Changes from v2:
* Style fixes in patch updating mbus protection
* Remove redundant stable notifications except for patch 4/6
Changes from v1:
* update MBUS windows access protection register once, after whole loop
* add fixing value of MVNETA_RXQ_INTR_ENABLE_ALL_MASK
* add fixing error path for skb_build()
* add possibility of setting custom TX IP checksum limit in DT property
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:46 +0000 (13:27 +0100)]
mvebu: dts: enable IP checksum with jumbo frames for Armada 38x on Port0
The Ethernet controller found in the Armada 38x SoC's family support
TCP/IP checksumming with frame sizes larger than 1600 bytes, however
only on port 0.
This commit enables it by setting 'tx-csum-limit' to 9800B in
'ethernet@70000' node.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:45 +0000 (13:27 +0100)]
net: mvneta: enable setting custom TX IP checksum limit
Since Armada 38x SoC can support IP checksum for jumbo frames only on
a single port, it means that this feature should be enabled per-port,
rather than for the whole SoC.
This patch enables setting custom TX IP checksum limit by adding new
optional property to the mvneta device tree node. If not used, by
default 1600B is set for "marvell,armada-370-neta" and 9800B for other
strings, which ensures backward compatibility. Binding documentation
is updated accordingly.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:44 +0000 (13:27 +0100)]
net: mvneta: fix error path for building skb
In the actual RX processing, there is same error path for both descriptor
ring refilling and building skb fails. This is not correct, because after
successful refill, the ring is already updated with newly allocated
buffer. Then, in case of build_skb() fail, hitherto code left the original
buffer unmapped.
This patch fixes above situation by swapping error check of skb build with
DMA-unmap of original buffer.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Acked-by: Simon Guinot <simon.guinot@sequanux.org>
Cc: <stable@vger.kernel.org> # v4.2+
Fixes
a84e32894191 ("net: mvneta: fix refilling for Rx DMA buffers")
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:43 +0000 (13:27 +0100)]
net: mvneta: fix bit assignment for RX packet irq enable
A value originally defined in the driver was inappropriate. Even though
the ingress was somehow working, writing MVNETA_RXQ_INTR_ENABLE_ALL_MASK
to MVNETA_INTR_ENABLE didn't make any effect, because the bits [31:16]
are reserved and read-only.
This commit updates MVNETA_RXQ_INTR_ENABLE_ALL_MASK to be compliant with
the controller's documentation.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network
unit")
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:42 +0000 (13:27 +0100)]
net: mvneta: fix bit assignment in MVNETA_RXQ_CONFIG_REG
MVNETA_RXQ_HW_BUF_ALLOC bit which controls enabling hardware buffer
allocation was mistakenly set as BIT(1). This commit fixes the assignment.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network
unit")
Signed-off-by: David S. Miller <davem@davemloft.net>
Marcin Wojtas [Mon, 30 Nov 2015 12:27:41 +0000 (13:27 +0100)]
net: mvneta: add configuration for MBUS windows access protection
This commit adds missing configuration of MBUS windows access protection
in mvneta_conf_mbus_windows function - a dedicated variable for that
purpose remained there unused since v3.8 initial mvneta support. Because
of that the register contents were inherited from the bootloader.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network
unit")
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 3 Dec 2015 00:45:56 +0000 (16:45 -0800)]
Merge tag 'spi-fix-v4.4-rc3' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"There's one fix for the core here, we weren't reinitialising the
actual transferred length in messages when they get reused which meant
that we'd just keep adding to the length if a message is reused. This
has limited impact since it's only used in error handling cases but
will really mess anything that tries to use it up when it triggers.
As ever there's a small collection of driver specific fixes too"
* tag 'spi-fix-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: bugfix: spi_message.transfer_length does not get reset
spi: pl022: handle EPROBE_DEFER for dma
spi: bcm63xx: use correct format string for printing a resource
spi: mediatek: single device does not require cs_gpios
spi: Add missing kerneldoc description for parameter
Johannes Berg [Fri, 27 Nov 2015 20:59:41 +0000 (21:59 +0100)]
mac80211: fix off-channel mgmt-tx uninitialized variable usage
In the last change here, I neglected to update the cookie in one code
path: when a mgmt-tx has no real cookie sent to userspace as it doesn't
wait for a response, but is off-channel. The original code used the SKB
pointer as the cookie and always assigned the cookie to the TX SKB in
ieee80211_start_roc_work(), but my change turned this around and made
the code rely on a valid cookie being passed in.
Unfortunately, the off-channel no-wait TX path wasn't assigning one at
all, resulting in an uninitialized stack value being used. This wasn't
handed back to userspace as a cookie (since in the no-wait case there
isn't a cookie), but it was tested for non-zero to distinguish between
mgmt-tx and off-channel.
Fix this by assigning a dummy non-zero cookie unconditionally, and get
rid of a misleading comment and some dead code while at it. I'll clean
up the ACK SKB handling separately later.
Fixes: 3b79af973cf4 ("mac80211: stop using pointers as userspace cookies")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Antonio Quartulli [Sat, 21 Nov 2015 10:13:40 +0000 (18:13 +0800)]
mac80211: do not actively scan DFS channels
DFS channels should not be actively scanned as we can't be sure
if we are allowed or not.
If the current channel is in the DFS band, active scan might be
performed after CSA, but we have no guarantee about other channels,
therefore it is safer to prevent active scanning at all.
Cc: stable@vger.kernel.org
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Eliad Peller [Tue, 17 Nov 2015 08:24:40 +0000 (10:24 +0200)]
mac80211: don't teardown sdata on sdata stop
Interfaces are being initialized (setup) on addition,
and torn down on removal.
However, p2p device is being torn down when stopped,
resulting in the next p2p start operation being done
on uninitialized interface.
Solve it by calling ieee80211_teardown_sdata() only
on interface removal (for the non-netdev case).
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
[squashed in fix to call teardown after unregister]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
David S. Miller [Wed, 2 Dec 2015 20:58:51 +0000 (15:58 -0500)]
Merge branch 'thunderx-fixes'
Sunil Goutham says:
====================
thunderx: miscellaneous fixes
This patch series contains fixes for various issues observed
with BGX and NIC drivers.
Changes from v1:
- Fixed comment syle in the first patch of the series
- Removed 'Increase transmit queue length' patch from the series,
will recheck if it's a driver or system issue and resubmit.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sunil Goutham [Wed, 2 Dec 2015 10:06:17 +0000 (15:36 +0530)]
net: thunderx: Enable BGX LMAC's RX/TX only after VF is up
Enable or disable BGX LMAC's RX/TX based on corresponding VF's
status. If otherwise, when multiple LMAC's physical link is up
then packets from all LMAC's whose corresponding VF is not yet
initialized will get forwarded to VF0. This is due to VNIC's default
configuration where CPI, RSSI e.t.c point to VF0/QSET0/RQ0.
This patch will prevent multiple copies of packets on VF0.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sunil Goutham [Wed, 2 Dec 2015 10:06:16 +0000 (15:36 +0530)]
net: thunderx: Switchon carrier only upon interface link up
Call netif_carrier_on() only if interface's link is up. Switching this on
upon IFF_UP by default, is causing issues with ethernet channel bonding
in LACP mode. Initial NETDEV_CHANGE notification was being skipped.
Also fixed some issues with link/speed/duplex reporting via ethtool.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sunil Goutham [Wed, 2 Dec 2015 10:06:15 +0000 (15:36 +0530)]
net: thunderx: Set CQ timer threshold properly
Properly set CQ timer threshold and also set it to 2us.
With previous incorrect settings it was set to 0.5us which is too less.
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Thanneeru Srinivasulu [Wed, 2 Dec 2015 10:06:14 +0000 (15:36 +0530)]
net: thunderx: Wait for delayed work to finish before destroying it
While VNIC or BGX driver teardown, wait for already scheduled delayed work to
finish before destroying it.
Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Thanneeru Srinivasulu [Wed, 2 Dec 2015 10:06:13 +0000 (15:36 +0530)]
net: thunderx: Force to load octeon-mdio before bgx driver.
Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 2 Dec 2015 19:05:34 +0000 (11:05 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- regression fix for hid-lg driver from Benjamin Tissoires
- quirk for Logitech G710+ from Jimmy Berry
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: lg: restrict filtering out of first interface to G29 only
HID: usbhid: add Logitech G710+ keyboard quirk NOGET
Linus Torvalds [Wed, 2 Dec 2015 19:00:05 +0000 (11:00 -0800)]
Merge tag 'pinctrl-v4.4-2' of git://git./linux/kernel/git/linusw/linux-pinctrl
Pull pincontrol fixes from Linus Walleij:
"These are some v4.4 pin control fixes:
- Drop a redundant if-clause from Kconfig
- Fix a missing of_node_put() memory leak in the Freescale i.MX
driver
- Fix 64bit compilation of the Qualcomm SSBI driver.
- Fix a logic inversion in the Mediatek driver.
- Fix a compilation error for the odd one off in the Super-H instance
of the SH PFC driver"
* tag 'pinctrl-v4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: sh-pfc: sh7734: Add missing cfg macro parameter to fix build
pinctrl: mediatek: Add get_direction support.
pinctrl: fix qcom ssbi drivers for 64-bit compilation
pinctrl: imx1-core: add missing of_node_put
pinctrl: remove redundant if conditional from Kconfig
Linus Torvalds [Wed, 2 Dec 2015 18:54:03 +0000 (10:54 -0800)]
Merge tag 'gpio-v4.4-2' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Some GPIO fixes for the v4.4 series:
- Fix a bunch of possible NULL references found by Coccinelle
jockeys.
- Stop creating Tegra's debugfs on everything and its dog. This is
an ARM multiplatform kernel issue.
- Fix an oops in gpiolib for NULL names on named GPIOs.
- Fix a complex OMAP1 bug in the OMAP driver"
* tag 'gpio-v4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: omap: drop omap1 mpuio specific irq_mask/unmask callbacks
gpiolib: fix oops, if gpio name is NULL
gpio-tegra: Do not create the debugfs entry by default
gpio: palmas: fix a possible NULL dereference
gpio: syscon: fix a possible NULL dereference
gpio: 74xx: fix a possible NULL dereference
Paolo Abeni [Mon, 30 Nov 2015 11:31:43 +0000 (12:31 +0100)]
openvswitch: properly refcount vport-vxlan module
After
614732eaa12d, no refcount is maintained for the vport-vxlan module.
This allows the userspace to remove such module while vport-vxlan
devices still exist, which leads to later oops.
v1 -> v2:
- move vport 'owner' initialization in ovs_vport_ops_register()
and make such function a macro
Fixes: 614732eaa12d ("openvswitch: Use regular VXLAN net_device device")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Benjamin Tissoires [Tue, 1 Dec 2015 09:26:24 +0000 (10:26 +0100)]
HID: lg: restrict filtering out of first interface to G29 only
Looks like
29fae1c85 ("HID: logitech: Add support for G29") was a little
bit aggressive and broke other devices.
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=108121
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Daniel Borkmann [Mon, 30 Nov 2015 12:02:56 +0000 (13:02 +0100)]
bpf, array: fix heap out-of-bounds access when updating elements
During own review but also reported by Dmitry's syzkaller [1] it has been
noticed that we trigger a heap out-of-bounds access on eBPF array maps
when updating elements. This happens with each map whose map->value_size
(specified during map creation time) is not multiple of 8 bytes.
In array_map_alloc(), elem_size is round_up(attr->value_size, 8) and
used to align array map slots for faster access. However, in function
array_map_update_elem(), we update the element as ...
memcpy(array->value + array->elem_size * index, value, array->elem_size);
... where we access 'value' out-of-bounds, since it was allocated from
map_update_elem() from syscall side as kmalloc(map->value_size, GFP_USER)
and later on copied through copy_from_user(value, uvalue, map->value_size).
Thus, up to 7 bytes, we can access out-of-bounds.
Same could happen from within an eBPF program, where in worst case we
access beyond an eBPF program's designated stack.
Since
1be7f75d1668 ("bpf: enable non-root eBPF programs") didn't hit an
official release yet, it only affects priviledged users.
In case of array_map_lookup_elem(), the verifier prevents eBPF programs
from accessing beyond map->value_size through check_map_access(). Also
from syscall side map_lookup_elem() only copies map->value_size back to
user, so nothing could leak.
[1] http://github.com/google/syzkaller
Fixes: 28fbcfa08d8e ("bpf: add array type of eBPF maps")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steven Rostedt (Red Hat) [Tue, 1 Dec 2015 21:08:05 +0000 (16:08 -0500)]
tracing: Add sched_wakeup_new and sched_waking tracepoints for pid filter
The set_event_pid filter relies on attaching to the sched_switch and
sched_wakeup tracepoints to see if it should filter the tracing on schedule
tracepoints. By adding the callbacks to sched_wakeup, pids in the
set_event_pid file will trace the wakeups of those tasks with those pids.
But sched_wakeup_new and sched_waking were missed. These two should also be
traced. Luckily, these tracepoints share the same class as sched_wakeup
which means they can use the same pre and post callbacks as sched_wakeup
does.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Eric Dumazet [Mon, 30 Nov 2015 04:03:11 +0000 (20:03 -0800)]
net: fix sock_wake_async() rcu protection
Dmitry provided a syzkaller (http://github.com/google/syzkaller)
triggering a fault in sock_wake_async() when async IO is requested.
Said program stressed af_unix sockets, but the issue is generic
and should be addressed in core networking stack.
The problem is that by the time sock_wake_async() is called,
we should not access the @flags field of 'struct socket',
as the inode containing this socket might be freed without
further notice, and without RCU grace period.
We already maintain an RCU protected structure, "struct socket_wq"
so moving SOCKWQ_ASYNC_NOSPACE & SOCKWQ_ASYNC_WAITDATA into it
is the safe route.
It also reduces number of cache lines needing dirtying, so might
provide a performance improvement anyway.
In followup patches, we might move remaining flags (SOCK_NOSPACE,
SOCK_PASSCRED, SOCK_PASSSEC) to save 8 bytes and let 'struct socket'
being mostly read and let it being shared between cpus.
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 30 Nov 2015 04:03:10 +0000 (20:03 -0800)]
net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
This patch is a cleanup to make following patch easier to
review.
Goal is to move SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA
from (struct socket)->flags to a (struct socket_wq)->flags
to benefit from RCU protection in sock_wake_async()
To ease backports, we rename both constants.
Two new helpers, sk_set_bit(int nr, struct sock *sk)
and sk_clear_bit(int net, struct sock *sk) are added so that
following patch can change their implementation.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephan Günther [Tue, 1 Dec 2015 20:23:22 +0000 (13:23 -0700)]
nvme: temporary fix for Apple controller reset
Recent patches added basic support for the Apple NVMe controller but
still cause resets and data corruption on that particular controller
when a specific pattern of read/flush commands occurs. Limiting the
queue depth to 2 works around that issue.
This patch enforces that limit only for the Apple controller and is
considered a temporary fix until we find the root source of that
problem.
Signed-off-by: Stephan Günther <guenther@tum.de>
Signed-off-by: Maurice Leclaire <leclaire@in.tum.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Alexey Khoroshilov [Fri, 27 Nov 2015 22:29:30 +0000 (01:29 +0300)]
vmxnet3: fix checks for dma mapping errors
vmxnet3_drv does not check dma_addr with dma_mapping_error()
after mapping dma memory. The patch adds the checks and
tries to handle failures.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Peter Hurley [Fri, 27 Nov 2015 19:18:39 +0000 (14:18 -0500)]
wan/x25: Fix use-after-free in x25_asy_open_tty()
The N_X25 line discipline may access the previous line discipline's closed
and already-freed private data on open [1].
The tty->disc_data field _never_ refers to valid data on entry to the
line discipline's open() method. Rather, the ldisc is expected to
initialize that field for its own use for the lifetime of the instance
(ie. from open() to close() only).
[1]
[ 634.336761] ==================================================================
[ 634.338226] BUG: KASAN: use-after-free in x25_asy_open_tty+0x13d/0x490 at addr
ffff8800a743efd0
[ 634.339558] Read of size 4 by task syzkaller_execu/8981
[ 634.340359] =============================================================================
[ 634.341598] BUG kmalloc-512 (Not tainted): kasan: bad access detected
...
[ 634.405018] Call Trace:
[ 634.405277] dump_stack (lib/dump_stack.c:52)
[ 634.405775] print_trailer (mm/slub.c:655)
[ 634.406361] object_err (mm/slub.c:662)
[ 634.406824] kasan_report_error (mm/kasan/report.c:138 mm/kasan/report.c:236)
[ 634.409581] __asan_report_load4_noabort (mm/kasan/report.c:279)
[ 634.411355] x25_asy_open_tty (drivers/net/wan/x25_asy.c:559 (discriminator 1))
[ 634.413997] tty_ldisc_open.isra.2 (drivers/tty/tty_ldisc.c:447)
[ 634.414549] tty_set_ldisc (drivers/tty/tty_ldisc.c:567)
[ 634.415057] tty_ioctl (drivers/tty/tty_io.c:2646 drivers/tty/tty_io.c:2879)
[ 634.423524] do_vfs_ioctl (fs/ioctl.c:43 fs/ioctl.c:607)
[ 634.427491] SyS_ioctl (fs/ioctl.c:622 fs/ioctl.c:613)
[ 634.427945] entry_SYSCALL_64_fastpath (arch/x86/entry/entry_64.S:188)
Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Fri, 27 Nov 2015 17:17:05 +0000 (18:17 +0100)]
Revert "ipv6: ndisc: inherit metadata dst when creating ndisc requests"
This reverts commit
ab450605b35caa768ca33e86db9403229bf42be4.
In IPv6, we cannot inherit the dst of the original dst. ndisc packets
are IPv6 packets and may take another route than the original packet.
This patch breaks the following scenario: a packet comes from eth0 and
is forwarded through vxlan1. The encapsulated packet triggers an NS
which cannot be sent because of the wrong route.
CC: Jiri Benc <jbenc@redhat.com>
CC: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arianna Avanzini [Tue, 1 Dec 2015 10:48:19 +0000 (11:48 +0100)]
null_blk: change type of completion_nsec to unsigned long
This commit at least doubles the maximum value for
completion_nsec. This helps in special cases where one wants/needs to
emulate an extremely slow I/O (for example to spot bugs).
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna Avanzini <avanzini@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Arianna Avanzini [Tue, 1 Dec 2015 10:48:18 +0000 (11:48 +0100)]
null_blk: guarantee device restart in all irq modes
In single-queue (block layer) mode,the function null_rq_prep_fn stops
the device if alloc_cmd fails. Then, once stopped, the device must be
restarted on the next command completion, so that the request(s) for
which alloc_cmd failed can be requeued. Otherwise the device hangs.
Unfortunately, device restart is currently performed only for delayed
completions, i.e., in irqmode==2. This fact causes hangs, for the
above reasons, with the other irqmodes in combination with single-queue
block layer.
This commits addresses this issue by making sure that, if stopped, the
device is properly restarted for all irqmodes on completions.
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna AVanzini <avanzini@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Paolo Valente [Tue, 1 Dec 2015 10:48:17 +0000 (11:48 +0100)]
null_blk: set a separate timer for each command
For the Timer IRQ mode (i.e., when command completions are delayed),
there is one timer for each CPU. Each of these timers
. has a completion queue associated with it, containing all the
command completions to be executed when the timer fires;
. is set, and a new completion-to-execute is inserted into its
completion queue, every time the dispatch code for a new command
happens to be executed on the CPU related to the timer.
This implies that, if the dispatch of a new command happens to be
executed on a CPU whose timer has already been set, but has not yet
fired, then the timer is set again, to the completion time of the
newly arrived command. When the timer eventually fires, all its queued
completions are executed.
This way of handling delayed command completions entails the following
problem: if more than one command completion is inserted into the
queue of a timer before the timer fires, then the expiration time for
the timer is moved forward every time each of these completions is
enqueued. As a consequence, only the last completion enqueued enjoys a
correct execution time, while all previous completions are unjustly
delayed until the last completion is executed (and at that time they
are executed all together).
Specifically, if all the above completions are enqueued almost at the
same time, then the problem is negligible. On the opposite end, if
every completion is enqueued a while after the previous completion was
enqueued (in the extreme case, it is enqueued only right before the
timer would have expired), then every enqueued completion, except for
the last one, experiences an inflated delay, proportional to the number
of completions enqueued after it. In the end, commands, and thus I/O
requests, may be completed at an arbitrarily lower rate than the
desired one.
This commit addresses this issue by replacing per-CPU timers with
per-command timers, i.e., by associating an individual timer with each
command.
Signed-off-by: Paolo Valente <paolo.valente@unimore.it>
Signed-off-by: Arianna Avanzini <avanzini@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Tue, 1 Dec 2015 17:43:06 +0000 (09:43 -0800)]
Merge tag 'remoteproc-4.4-fixes' of git://git./linux/kernel/git/ohad/remoteproc
Pull remoteproc fixes from Ohad Ben-Cohen:
"Two one-liners coming from Suman and Arnd"
* tag 'remoteproc-4.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
remoteproc: fix memory leak of remoteproc ida cache layers
remoteproc: avoid stack overflow in debugfs file
Geert Uytterhoeven [Wed, 25 Nov 2015 12:52:13 +0000 (13:52 +0100)]
pinctrl: sh-pfc: sh7734: Add missing cfg macro parameter to fix build
When building for SH7734:
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:2: error: '_GP_DATA' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:586:1: error: macro "_GP_DATA" passed 5 arguments, but takes just 4
...
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:1: error: macro "_GP_INOUTSEL" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:53: error: '_GP_INOUTSEL' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:2: warning: initialization makes integer from pointer without a cast [enabled by default]
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2389:2: warning: (near initialization for '(anonymous)[0]') [enabled by default]
...
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:1: error: macro "_GP_INDT" passed 5 arguments, but takes just 4
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:47: error: '_GP_INDT' undeclared here (not in a function)
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:2: warning: initialization makes integer from pointer without a cast [enabled by default]
drivers/pinctrl/sh-pfc/pfc-sh7734.c:2416:2: warning: (near initialization for '(anonymous)[0]') [enabled by default]
...
Add the missing "cfg" macro parameters to the sh7734-specific
_GP_DATA(), _GP_INOUTSEL(), and _GP_INDT() macros to fix this.
Fixes: 22768fc60abbf58b ("pinctrl: sh-pfc: Add macros defining GP ports with config flags")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Torvalds [Tue, 1 Dec 2015 00:06:44 +0000 (16:06 -0800)]
Merge tag 'mn10300-for-linus-v4.4-rc4' of git://git./linux/kernel/git/groeck/linux-staging
Pull mn10300 fix from Guenter Roeck:
"A single patch to fix mn10300 build failures"
* tag 'mn10300-for-linus-v4.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
mn10300: Select CONFIG_HAVE_UID16 to fix build failure
Linus Torvalds [Mon, 30 Nov 2015 23:38:23 +0000 (15:38 -0800)]
Merge tag 'trace-v4.4-rc2' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"I found two minor bugs while doing development on the ring buffer
code.
The first is something that's been there since its creation. If a
reader reads a page out of the ring buffer before there's any events
on it, it can get an out of date timestamp for that event. It may be
off by a few microseconds, more if the first event gets discarded.
The fix was to only update the reader time stamp when it actually sees
an event on the page, instead of just reading the timestamp from the
page even if it has no events on it. That timestamp is still volatile
until an event is present.
The second bug is more recent. Instead of passing around parameters a
descriptor was made and the parameters are passed via a single
descriptor. This simplified the code a bit. But there was one place
that expected the parameter to be passed by value not reference (which
a descriptor now does). And it added to the length of the event,
which may be ignored later, but the length should not have been
increased. The only real problem with this bug is that it may
allocate more than was needed for the event"
* tag 'trace-v4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ring-buffer: Put back the length if crossed page with add_timestamp
ring-buffer: Update read stamp with first real commit on page
Eric Dumazet [Thu, 26 Nov 2015 16:18:14 +0000 (08:18 -0800)]
tcp: initialize tp->copied_seq in case of cross SYN connection
Dmitry provided a syzkaller (http://github.com/google/syzkaller)
generated program that triggers the WARNING at
net/ipv4/tcp.c:1729 in tcp_recvmsg() :
WARN_ON(tp->copied_seq != tp->rcv_nxt &&
!(flags & (MSG_PEEK | MSG_TRUNC)));
His program is specifically attempting a Cross SYN TCP exchange,
that we support (for the pleasure of hackers ?), but it looks we
lack proper tcp->copied_seq initialization.
Thanks again Dmitry for your report and testings.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Brown [Thu, 26 Nov 2015 11:59:46 +0000 (11:59 +0000)]
net: fsl: Fix error checking for platform_get_irq()
The gianfar driver has recently been enabled on arm64 but fails to build
since it check the return value of platform_get_irq() against NO_IRQ. Fix
this by instead checking for a negative error code.
Even on ARM where this code was previously being built this check was
incorrect since platform_get_irq() returns a negative error code which
may not be exactly the (unsigned int)(-1) that NO_IRQ is defined to be.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mark Brown [Thu, 26 Nov 2015 11:59:45 +0000 (11:59 +0000)]
net: fsl: Don't use NO_IRQ to check return value of irq_of_parse_and_map()
This driver can be built on arm64 but relies on NO_IRQ to check the return
value of irq_of_parse_and_map() which fails to build on arm64 because the
architecture does not provide a NO_IRQ. Fix this to correctly check the
return value of irq_of_parse_and_map().
Even on ARM systems where the driver was previously used the check was
broken since on ARM NO_IRQ is -1 but irq_of_parse_and_map() returns 0 on
error.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Frederic Sowa [Thu, 26 Nov 2015 11:08:18 +0000 (12:08 +0100)]
af-unix: passcred support for sendpage
sendpage did not care about credentials at all. This could lead to
situations in which because of fd passing between processes we could
append data to skbs with different scm data. It is illegal to splice those
skbs together. Instead we have to allocate a new skb and if requested
fill out the scm details.
Fixes: 869e7c62486ec ("net: af_unix: implement stream sendpage support")
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ming Lei [Mon, 30 Nov 2015 08:05:49 +0000 (16:05 +0800)]
blk-merge: fix computing bio->bi_seg_front_size in case of single segment
When bio has only one physical segment, we should set bio's
bi_seg_front_size as the real(final) size of the single segment.
Fixes: 02e707424c2ea(blk-merge: fix blk_bio_segment_split)
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
David S. Miller [Mon, 30 Nov 2015 19:52:52 +0000 (14:52 -0500)]
Merge branch 'stmmac-fixes'
Giuseppe Cavallaro says:
====================
Spare stmmac fixes
These are some fixes for the stmmac d.d. tested on STi platforms.
They are for some part of the PM, STi glue and rx path when test
Jumbo.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Thu, 26 Nov 2015 07:35:45 +0000 (08:35 +0100)]
stmmac: fix oversized frame reception
The receive skb buffers can be preallocated when the link is opened
according to mtu size.
While testing on a network environment with not standard MTU (e.g. 3000),
a panic occurred if an incoming packet had a length greater than rx skb
buffer size. This is because the HW is programmed to copy, from the DMA,
an Jumbo frame and the Sw must check if the allocated buffer is enough to
store the frame.
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Thu, 26 Nov 2015 07:35:44 +0000 (08:35 +0100)]
stmmac: fix PHY reset during resume
When stmmac_mdio_reset, was called from stmmac_resume, it was not
resetting the PHY due to which MAC was not getting reset properly and
hence ethernet interface not was resumed properly.
The issue was currently only reproducible on stih301-b2204.
Signed-off-by: Pankaj Dev <pankaj.dev@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Thu, 26 Nov 2015 07:35:43 +0000 (08:35 +0100)]
stmmac: dwmac-sti: fix st,tx-retime-src check
In case of the st,tx-retime-src is missing from device-tree
(it's an optional field) the driver will invoke the strcasecmp to check
which clock has been selected and this is a bug; the else condition
is needed.
In the dwmac_setup, the "rs" variable, passed to the strcasecmp, was not
initialized and the compiler, depending on the options adopted, could
take it in some different part of the stack generating the hang in such
configuration.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Thu, 26 Nov 2015 07:35:42 +0000 (08:35 +0100)]
stmmac: fix csr clock divisor for 300MHz
This patch is to fix the csr clock in case of 300MHz is provided.
Reported-by: Kent Borg <Kent.Borg@csr.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Giuseppe CAVALLARO [Thu, 26 Nov 2015 07:35:41 +0000 (08:35 +0100)]
stmmac: fix a filter problem after resuming.
When resume the HW is re-configured but some settings can be lost.
For example, the MAC Address_X High/Low Registers used for VLAN tagging..
So, while resuming, the set_filter callback needs to be invoked to
re-program perfect and hash-table registers.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jan Kara [Mon, 30 Nov 2015 17:15:42 +0000 (10:15 -0700)]
direct-io: Fix negative return from dio read beyond eof
Assume a filesystem with 4KB blocks. When a file has size 1000 bytes and
we issue direct IO read at offset 1024, blockdev_direct_IO() reads the
tail of the last block and the logic for handling short DIO reads in
dio_complete() results in a return value -24 (1000 - 1024) which
obviously confuses userspace.
Fix the problem by bailing out early once we sample i_size and can
reliably check that direct IO read starts beyond i_size.
Reported-by: Avi Kivity <avi@scylladb.com>
Fixes: 9fe55eea7e4b444bafc42fa0000cc2d1d2847275
CC: stable@vger.kernel.org
CC: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
Guenter Roeck [Sat, 28 Nov 2015 16:52:04 +0000 (08:52 -0800)]
mn10300: Select CONFIG_HAVE_UID16 to fix build failure
mn10300 builds fail with
fs/stat.c: In function 'cp_old_stat':
fs/stat.c:163:2: error: 'old_uid_t' undeclared
ipc/util.c: In function 'ipc64_perm_to_ipc_perm':
ipc/util.c:540:2: error: 'old_uid_t' undeclared
Select CONFIG_HAVE_UID16 and remove local definition of CONFIG_UID16
to fix the problem.
Fixes: fbc416ff8618 ("arm64: fix building without CONFIG_UID16")
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Grygorii Strashko [Fri, 20 Nov 2015 13:35:14 +0000 (15:35 +0200)]
gpio: omap: drop omap1 mpuio specific irq_mask/unmask callbacks
Originally OMAP MPUIO GPIO irqchip was implemented using Generic irq
chip, but after set of reworks Generic irq chip code was replaced by
common OMAP GPIO implementation and finally removed by
commit
d2d05c65c40e ("gpio: omap: Fix regression for MPUIO interrupts").
Unfortunately, above commit left .irq_mask/unmask callbacks assigned
as below for MPUIO GPIO case:
irqc->irq_mask = irq_gc_mask_set_bit;
irqc->irq_unmask = irq_gc_mask_clr_bit;
This now causes boot failure on OMAP1 platforms, after
commit
450fa54cfd66 ("gpio: omap: convert to use generic irq handler")
which forces these callbacks to be called during GPIO IRQs mapping
from gpiochip_irq_map:
Unable to handle kernel NULL pointer dereference at virtual address
00000000
pgd =
c0004000
[
00000000] *pgd=
00000000
Internal error: Oops: 75 [#1] ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 4.4.0-rc1-e3-los_afe0c+-00002-g25379c0-dirty #1
Hardware name: Amstrad E3 (Delta)
task:
c1836000 ti:
c1838000 task.ti:
c1838000
PC is at irq_gc_mask_set_bit+0x1c/0x60
LR is at __irq_do_set_handler+0x118/0x15c
pc : [<
c004848c>] lr : [<
c0047d4c>] psr:
600000d3
sp :
c1839c90 ip :
c1862c64 fp :
c1839c9c
r10:
00000000 r9 :
c0411950 r8 :
c0411bbc
r7 :
00000000 r6 :
c185c310 r5 :
c00444e8 r4 :
c185c300
r3 :
c1854b50 r2 :
00000000 r1 :
00000000 r0 :
c185c310
Flags: nZCv IRQs off FIQs off Mode SVC_32 ISA ARM Segment kernel
Control:
0000317f Table:
10004000 DAC:
00000057
Process swapper (pid: 1, stack limit = 0xc1838190)
Stack: (0xc1839c90 to 0xc183a000)
[...]
Backtrace:
[<
c0048470>] (irq_gc_mask_set_bit) from [<
c0047d4c>] (__irq_do_set_handler+0x118/0x15c)
[<
c0047c34>] (__irq_do_set_handler) from [<
c0047dd4>] (__irq_set_handler+0x44/0x5c)
r6:
00000000 r5:
c00444e8 r4:
c185c300
[<
c0047d90>] (__irq_set_handler) from [<
c0047e1c>] (irq_set_chip_and_handler_name+0x30/0x34)
r7:
00000050 r6:
00000000 r5:
c00444e8 r4:
00000050
[<
c0047dec>] (irq_set_chip_and_handler_name) from [<
c01b345c>] (gpiochip_irq_map+0x3c/0x8c)
r7:
00000050 r6:
00000000 r5:
00000050 r4:
c1862c64
[<
c01b3420>] (gpiochip_irq_map) from [<
c0049670>] (irq_domain_associate+0x7c/0x1c4)
r5:
c185c310 r4:
c185cb00
[<
c00495f4>] (irq_domain_associate) from [<
c0049894>] (irq_domain_add_simple+0x98/0xc0)
r8:
c0411bbc r7:
c185cb00 r6:
00000050 r5:
00000010 r4:
00000001
[<
c00497fc>] (irq_domain_add_simple) from [<
c01b3328>] (_gpiochip_irqchip_add+0x64/0x10c)
r7:
c1862c64 r6:
c0419280 r5:
c1862c64 r4:
c1854b50
[<
c01b32c4>] (_gpiochip_irqchip_add) from [<
c01b79f4>] (omap_gpio_probe+0x2fc/0x63c)
r5:
c1854b50 r4:
c1862c10
[<
c01b76f8>] (omap_gpio_probe) from [<
c01fcf58>] (platform_drv_probe+0x2c/0x64)
r10:
00000000 r9:
c03e45e8 r8:
00000000 r7:
c0419294 r6:
c0411984 r5:
c0419294
r4:
c0411950
[<
c01fcf2c>] (platform_drv_probe) from [<
c01fb668>] (really_probe+0x160/0x29c)
Hence, fix it by remove obsolete callbacks assignment. After this
change omap_gpio_mask_irq()/omap_gpio_unmask_irq() will be used
for MPUIO IRQs masking, but this now happens anyway from
omap_gpio_irq_startup/shutdown().
Cc: Tony Lindgren <tony@atomide.com>
Fixes: commit d2d05c65c40e ("gpio: omap: Fix regression for MPUIO interrupts")
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Mark Brown [Mon, 30 Nov 2015 12:26:47 +0000 (12:26 +0000)]
Merge remote-tracking branches 'spi/fix/bcm63xx', 'spi/fix/doc', 'spi/fix/mediatek' and 'spi/fix/pl022' into spi-linus
Mark Brown [Mon, 30 Nov 2015 12:26:46 +0000 (12:26 +0000)]
Merge remote-tracking branch 'spi/fix/core' into spi-linus
Eric Dumazet [Wed, 25 Nov 2015 17:02:10 +0000 (09:02 -0800)]
drivers: net: xgene: fix possible use after free
Once TX has been enabled on a NIC, it is illegal to access skb,
as this skb might have been freed by another cpu, from TX completion
handler.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Cc: Iyappan Subramanian <isubramanian@apm.com>
Acked-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Martin Blumenstingl [Sun, 22 Nov 2015 16:46:09 +0000 (17:46 +0100)]
packet: Allow packets with only a header (but no payload)
Commit
9c7077622dd91 ("packet: make packet_snd fail on len smaller
than l2 header") added validation for the packet size in packet_snd.
This change enforces that every packet needs a header (with at least
hard_header_len bytes) plus a payload with at least one byte. Before
this change the payload was optional.
This fixes PPPoE connections which do not have a "Service" or
"Host-Uniq" configured (which is violating the spec, but is still
widely used in real-world setups). Those are currently failing with the
following message: "pppd: packet size is too short (24 <= 24)"
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 30 Nov 2015 02:58:26 +0000 (18:58 -0800)]
Linux 4.4-rc3
Linus Torvalds [Mon, 30 Nov 2015 01:38:08 +0000 (17:38 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull nouveau and radeon fixes from Dave Airlie:
"Just some nouveau and radeon/amdgpu fixes.
The nouveau fixes look large as the firmware context files are
regenerated, but the actual change is quite small"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/radeon: make some dpm errors debug only
drm/nouveau/volt/pwm/gk104: fix an off-by-one resulting in the voltage not being set
drm/nouveau/nvif: allow userspace access to its own client object
drm/nouveau/gr/gf100-: fix oops when calling zbc methods
drm/nouveau/gr/gf117-: assume no PPC if NV_PGRAPH_GPC_GPM_PD_PES_TPC_ID_MASK is zero
drm/nouveau/gr/gf117-: read NV_PGRAPH_GPC_GPM_PD_PES_TPC_ID_MASK from correct GPC
drm/nouveau/gr/gf100-: split out per-gpc address calculation macro
drm/nouveau/bios: return actual size of the buffer retrieved via _ROM
drm/nouveau/instmem: protect instobj list with a spinlock
drm/nouveau/pci: enable c800 magic for some unknown Samsung laptop
drm/nouveau/pci: enable c800 magic for Clevo P157SM
drm/radeon: make rv770_set_sw_state failures non-fatal
drm/amdgpu: move dependency handling out of atomic section v2
drm/amdgpu: optimize scheduler fence handling
drm/amdgpu: remove vm->mutex
drm/amdgpu: add mutex for ba_va->valids/invalids
drm/amdgpu: adapt vce session create interface changes
drm/amdgpu: vce use multiple cache surface starting from stoney
drm/amdgpu: reset vce trap interrupt flag
Linus Torvalds [Mon, 30 Nov 2015 01:30:41 +0000 (17:30 -0800)]
Merge tag 'rtc-4.4-2' of git://git./linux/kernel/git/abelloni/linux
Pull RTC fixes from Alexandre Belloni:
"Two fixes for the ds1307 alarm and wakeup"
* tag 'rtc-4.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: ds1307: fix alarm reading at probe time
rtc: ds1307: fix kernel splat due to wakeup irq handling
Linus Torvalds [Mon, 30 Nov 2015 01:24:35 +0000 (17:24 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fix from Ralf Baechle:
"Just a fix for empty loops that may be removed by non-antique GCC"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix delay loops which may be removed by GCC.
Linus Torvalds [Mon, 30 Nov 2015 01:18:41 +0000 (17:18 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k
Pull m68k fixes from Geert Uytterhoeven:
"Summary:
- Add missing initialization of max_pfn, which is needed to make
selftests/vm/mlock2-tests succeed,
- Wire up new mlock2 syscall"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Wire up mlock2
m68knommu: Add missing initialization of max_pfn and {min,max}_low_pfn
m68k/mm: sun3 - Add missing initialization of max_pfn and {min,max}_low_pfn
m68k/mm: m54xx - Add missing initialization of max_pfn
m68k/mm: motorola - Add missing initialization of max_pfn
Linus Torvalds [Mon, 30 Nov 2015 01:13:07 +0000 (17:13 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Just two changes this time around:
- wire up the new mlock2 syscall added during the last merge window
- fix a build problem with certain configurations provoked by making
CONFIG_OF user selectable"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8454/1: OF implies OF_FLATTREE
ARM: wire up mlock2 syscall
Hannes Reinecke [Thu, 26 Nov 2015 07:46:57 +0000 (08:46 +0100)]
block: Always check queue limits for cloned requests
When a cloned request is retried on other queues it always needs
to be checked against the queue limits of that queue.
Otherwise the calculations for nr_phys_segments might be wrong,
leading to a crash in scsi_init_sgtable().
To clarify this the patch renames blk_rq_check_limits()
to blk_cloned_rq_check_limits() and removes the symbol
export, as the new function should only be used for
cloned requests and never exported.
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Ewan Milne <emilne@redhat.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Fixes: e2a60da74 ("block: Clean up special command handling logic")
Cc: stable@vger.kernel.org # 3.7+
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Wenwei Tao [Sat, 28 Nov 2015 15:49:28 +0000 (16:49 +0100)]
lightnvm: missing nvm_lock acquire
To avoid race conditions, traverse dev, media manager,
and target lists and also register, unregister entries
to/from them, should be always under the nvm_lock control.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Matias Bjørling [Sat, 28 Nov 2015 15:49:27 +0000 (16:49 +0100)]
lightnvm: unconverted ppa returned in get_bb_tbl
The get_bb_tbl function takes ppa as a generic address, which is
converted to the ppa device address within the device driver. When
the update_bbtbl callback is called from get_bb_tbl, the device
specific ppa is used, instead of the generic ppa.
Make sure to pass the generic ppa.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Matias Bjørling [Sat, 28 Nov 2015 15:49:26 +0000 (16:49 +0100)]
lightnvm: refactor and change vendor id for qemu
The QEMU NVMe implementation uses Intel vendor, Intel device id, and the
first vendor specific byte to identify a LightNVM compatible nvme
instance.
Instead of using the Intel specific, use a preallocated from CNEX Labs
instead. This lets us uniquely identify a QEMU lightnvm device without
breaking other vendor specific work in the qemu device driver.
Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Wenwei Tao [Sat, 28 Nov 2015 15:49:25 +0000 (16:49 +0100)]
lightnvm: do device max sectors boundary check first
do device max_phys_sect boundary check first, otherwise
we will allocate dma_pools for devices whose max sectors
are beyond lightnvm support and register them.
Signed-off-by: Wenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Sudip Mukherjee [Sat, 28 Nov 2015 15:49:24 +0000 (16:49 +0100)]
lightnvm: fix ioctl memory leaks
If copy_to_user() fails we returned error but we missed releasing
devices.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Wenwei Tao [Sat, 28 Nov 2015 15:49:23 +0000 (16:49 +0100)]
lightnvm: free memory when gennvm register fails
free allocated nvm block and gennvm lun structures when
gennvm register fails, otherwise it will cause memory leak.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Keith Busch [Sat, 28 Nov 2015 15:49:22 +0000 (16:49 +0100)]
lightnvm: Simplify config when disabled
We shouldn't compile an object file to get empty implementations;
conforms to linux coding style on conditional compilation.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Vladimir Zapolskiy [Wed, 11 Nov 2015 12:36:53 +0000 (14:36 +0200)]
gpiolib: fix oops, if gpio name is NULL
Commit
c0017ed71966 ("gpio: Introduce gpio descriptor 'name'") causes
OOPS on boot on LPC32xx boards:
Unable to handle kernel NULL pointer dereference at virtual address
00000000
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0+ #707
Hardware name: LPC32XX SoC (Flattened Device Tree)
task:
c381baa0 ti:
c381e000 task.ti:
c381e000
PC is at strcmp+0x10/0x40
LR is at gpiochip_add+0x3d0/0x4d4
pc : [<>] lr : [<>] psr:
a0000093
sp :
c381fd60 ip :
c381fd70 fp :
c381fd6c
[snip]
Backtrace:
[<>] (strcmp) from [<>] (gpiochip_add+0x3d0/0x4d4)
[<>] (gpiochip_add) from [<>] (lpc32xx_gpio_probe+0x44/0x60)
[<>] (lpc32xx_gpio_probe) from [<>] (platform_drv_probe+0x40/0x8c)
[<>] (platform_drv_probe) from [<>] (driver_probe_device+0x110/0x294)
[<>] (driver_probe_device) from [<>] (__driver_attach+0x70/0x94)
[<>] (__driver_attach) from [<>] (bus_for_each_dev+0x74/0x98)
[<>] (bus_for_each_dev) from [<>] (driver_attach+0x20/0x28)
[<>] (driver_attach) from [<>] (bus_add_driver+0xd4/0x1f0)
[<>] (bus_add_driver) from [<>] (driver_register+0xa4/0xe8)
[<>] (driver_register) from [<>] (__platform_driver_register+0x38/0x4c)
[<>] (__platform_driver_register) from [<>] (lpc32xx_gpio_driver_init+0x18/0x20)
[<>] (lpc32xx_gpio_driver_init) from [<>] (do_one_initcall+0x108/0x1c8)
[<>] (do_one_initcall) from [<>] (kernel_init_freeable+0x10c/0x1d4)
[<>] (kernel_init_freeable) from [<>] (kernel_init+0x10/0xec)
[<>] (kernel_init) from [<>] (ret_from_fork+0x14/0x24)
This is caused by the fact that at the moment some GPIO names are set
to NULL, there is a hole in linear representation of one GPI bank, see
drivers/gpio/gpio-lpc32xx.c / gpi_p3_names[] for details.
The same problem most probably affects also gpio-cs5535.c, see
cs5535_gpio_names[].
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Torvalds [Sun, 29 Nov 2015 17:03:57 +0000 (09:03 -0800)]
Merge git://git./linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
- fix tcm-user backend driver expired cmd time processing (agrover)
- eliminate kref_put_spinlock_irqsave() for I/O completion (bart)
- fix iscsi login kthread failure case hung task regression (nab)
- fix COMPARE_AND_WRITE completion use-after-free race (nab)
- fix COMPARE_AND_WRITE with SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC non zero
SGL offset data corruption. (Jan + Doug)
- fix >= v4.4-rc1 regression for tcm_qla2xxx enable configfs attribute
(Himanshu + HCH)
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target/stat: print full t10_wwn.model buffer
target: fix COMPARE_AND_WRITE non zero SGL offset data corruption
qla2xxx: Fix regression introduced by target configFS changes
kref: Remove kref_put_spinlock_irqsave()
target: Invoke release_cmd() callback without holding a spinlock
target: Fix race for SCF_COMPARE_AND_WRITE_POST checking
iscsi-target: Fix rx_login_comp hang after login failure
iscsi-target: return -ENOMEM instead of -1 in case of failed kmalloc()
target/user: Do not set unused fields in tcmu_ops
target/user: Fix time calc in expired cmd processing
Linus Torvalds [Sun, 29 Nov 2015 16:58:48 +0000 (08:58 -0800)]
Merge branch 'next' of git://git./linux/kernel/git/rzhang/linux
Pull thermal management fixes from Zhang Rui:
"Specifics:
- several fixes and cleanups on Rockchip thermal drivers.
- add the missing support of RK3368 SoCs in Rockchip driver.
- small fixes on of-thermal, power_allocator, rcar driver, IMX, and
QCOM drivers, and also compilation fixes, on thermal.h, when thermal
is not selected"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
imx: thermal: use CPU temperature grade info for thresholds
thermal: fix thermal_zone_bind_cooling_device prototype
Revert "thermal: qcom_spmi: allow compile test"
thermal: rcar_thermal: remove redundant operation
thermal: of-thermal: Reduce log level for message when can't fine thermal zone
thermal: power_allocator: Use temperature reading from tz
thermal: rockchip: Support the RK3368 SoCs in thermal driver
thermal: rockchip: consistently use int for temperatures
thermal: rockchip: Add the sort mode for adc value increment or decrement
thermal: rockchip: improve the conversion function
thermal: rockchip: trivial: fix typo in commit
thermal: rockchip: better to compatible the driver for different SoCs
dt-bindings: rockchip-thermal: Support the RK3368 SoCs compatible