bcma: fix buffer size caused crash in bcma_core_mips_print_irq()

Used buffer wasn't big enough to hold whole strings. Example output of
this function is:
[    0.180892] bcma: bus0: core 0x0800, irq: 2(S)* 3  4  5  6  D  I
[    0.180948] bcma: bus0: core 0x0812, irq: 2(S)  3* 4  5  6  D  I
[    0.180998] bcma: bus0: core 0x082d, irq: 2(S)  3  4* 5  6  D  I
[    0.181046] bcma: bus0: core 0x082c, irq: 2(S)  3  4  5  6  D  I*
which means we need to store up to 24 chars.

Fixes: 758f7e06063a8 ("bcma: Use bcma_debug and not pr_cont in MIPS driver")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Cc: stable@vger.kernel.org # v4.15+
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/bcma/driver_mips.c b/drivers/bcma/driver_mips.c
index f040aba48d5056c6e735ec4851a82f712dfdfa2c..27e9686b6d3a3bb499da4e724ce05d344ab24e86 100644 (file)
--- a/drivers/bcma/driver_mips.c
+++ b/drivers/bcma/driver_mips.c
@@ -184,7 +184,7 @@ static void bcma_core_mips_print_irq(struct bcma_device *dev, unsigned int irq)
 {
        int i;
        static const char *irq_name[] = {"2(S)", "3", "4", "5", "6", "D", "I"};
-       char interrupts[20];
+       char interrupts[25];
        char *ints = interrupts;
 
        for (i = 0; i < ARRAY_SIZE(irq_name); i++)