From: Adrian Bunk Date: Sat, 26 Nov 2005 23:36:37 +0000 (+0100) Subject: [PATCH] drivers/scsi/dpt_i2o.c: fix a NULL pointer dereference X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=458af5439fe7ae7d95ca14106844e61f0795166c;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git [PATCH] drivers/scsi/dpt_i2o.c: fix a NULL pointer dereference The Coverity checker spotted this obvious NULL pointer dereference. Signed-off-by: Adrian Bunk Acked-by: Mark Salyzyn Signed-off-by: Linus Torvalds --- diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index c28e3aea1c3c..418fc7b896ac 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -816,7 +816,7 @@ static int adpt_hba_reset(adpt_hba* pHba) static void adpt_i2o_sys_shutdown(void) { adpt_hba *pHba, *pNext; - struct adpt_i2o_post_wait_data *p1, *p2; + struct adpt_i2o_post_wait_data *p1, *old; printk(KERN_INFO"Shutting down Adaptec I2O controllers.\n"); printk(KERN_INFO" This could take a few minutes if there are many devices attached\n"); @@ -830,13 +830,14 @@ static void adpt_i2o_sys_shutdown(void) } /* Remove any timedout entries from the wait queue. */ - p2 = NULL; // spin_lock_irqsave(&adpt_post_wait_lock, flags); /* Nothing should be outstanding at this point so just * free them */ - for(p1 = adpt_post_wait_queue; p1; p2 = p1, p1 = p2->next) { - kfree(p1); + for(p1 = adpt_post_wait_queue; p1;) { + old = p1; + p1 = p1->next; + kfree(old); } // spin_unlock_irqrestore(&adpt_post_wait_lock, flags); adpt_post_wait_queue = NULL;