github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 23:22:31 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

staging: vchiq_arm: Fix possible NPR of keep-alive thread

Browse Source 
In case vchiq_platform_conn_state_changed() is never called or fails before
driver removal, ka_thread won't be a valid pointer to a task_struct. So
do the necessary checks before calling kthread_stop to avoid a crash.

Fixes: 863a756aaf ("staging: vc04_services: vchiq_core: Stop kthreads on vchiq module unload")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20250309125014.37166-3-wahrenst@gmx.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stefan Wahren 2025-03-09 13:50:11 +01:00 committed by Greg Kroah-Hartman
parent 63f4dbb196
commit 3db89bc6d9
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/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
View File

@ -1422,7 +1422,8 @@ static void vchiq_remove(struct platform_device *pdev)
kthread_stop(mgmt->state.slot_handler_thread);
arm_state = vchiq_platform_get_arm_state(&mgmt->state);
kthread_stop(arm_state->ka_thread);
if (!IS_ERR_OR_NULL(arm_state->ka_thread))
kthread_stop(arm_state->ka_thread);
}
static struct platform_driver vchiq_driver = {