4.14-stable review patch. If anyone has any objections, please let me know.
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From: tangwenji tang.wenji@zte.com.cn
commit 88fb2fa7db7510bf1078226ab48d162d9854f3d4 upstream.
The target system kernel crash when the initiator executes the sg_persist -A command,because of the second argument to be set to NULL when core_tmr_lun_reset is called in core_scsi3_pro_preempt function.
This fixes a regression originally introduced by:
commit 51ec502a32665fed66c7f03799ede4023b212536 Author: Bart Van Assche bart.vanassche@sandisk.com Date: Tue Feb 14 16:25:54 2017 -0800
target: Delete tmr from list before processing
Signed-off-by: tangwenji tang.wenji@zte.com.cn Signed-off-by: Nicholas Bellinger nab@linux-iscsi.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/target/target_core_tmr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -217,7 +217,8 @@ static void core_tmr_drain_tmr_list( * LUN_RESET tmr.. */ spin_lock_irqsave(&dev->se_tmr_lock, flags); - list_del_init(&tmr->tmr_list); + if (tmr) + list_del_init(&tmr->tmr_list); list_for_each_entry_safe(tmr_p, tmr_pp, &dev->dev_tmr_list, tmr_list) { cmd = tmr_p->task_cmd; if (!cmd) {