From dda094a312dbb2cd96e3e46fce7784aca999bcf1 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sat, 21 Feb 2015 07:32:47 +0000 Subject: [PATCH] i40e: Fix memory leak at failure path in i40e_dbg_command_write() The patch fixes a leak of 'cmd_buf' when copy_from_user() failed in i40e_dbg_command_write(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Tested-by: Jim Young Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_debugfs.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c index 61236f983971..c17ee77100d3 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_debugfs.c +++ b/drivers/net/ethernet/intel/i40e/i40e_debugfs.c @@ -989,8 +989,10 @@ static ssize_t i40e_dbg_command_write(struct file *filp, if (!cmd_buf) return count; bytes_not_copied = copy_from_user(cmd_buf, buffer, count); - if (bytes_not_copied < 0) + if (bytes_not_copied < 0) { + kfree(cmd_buf); return bytes_not_copied; + } if (bytes_not_copied > 0) count -= bytes_not_copied; cmd_buf[count] = '\0'; -- 2.30.2