mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-30 14:19:16 +00:00
Code Issues Releases Wiki Activity

mtip32xx: fix potential NULL pointer dereference in mtip_timeout_function()

Browse source 
The dereference to port should be moved below the NULL test.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Wei Yongjun 2012-11-08 17:35:38 +08:00 committed by Jens Axboe
parent 7c5d62388e
commit 298d80152c
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/block/mtip32xx/mtip32xx.c
View file

@ -559,7 +559,7 @@ static void mtip_timeout_function(unsigned long int data)
struct mtip_cmd *command;
int tag, cmdto_cnt = 0;
unsigned int bit, group;
unsigned int num_command_slots = port->dd->slot_groups * 32;
unsigned int num_command_slots;
unsigned long to, tagaccum[SLOTBITS_IN_LONGS];
if (unlikely(!port))
@ -572,6 +572,7 @@ static void mtip_timeout_function(unsigned long int data)
}
/* clear the tag accumulator */
memset(tagaccum, 0, SLOTBITS_IN_LONGS * sizeof(long));
num_command_slots = port->dd->slot_groups * 32;
for (tag = 0; tag < num_command_slots; tag++) {
/*