syzbot


BUG: workqueue leaked lock or atomic in wb_workfn

Status: auto-obsoleted due to no activity on 2024/07/05 10:05
Reported-by: syzbot+fa85145a4a7fa36dcb69@syzkaller.appspotmail.com
First crash: 102d, last: 102d

Sample crash report:
BUG: workqueue leaked lock or atomic: kworker/u4:15/0x00000001/29707
     last function: wb_workfn
CPU: 1 PID: 29707 Comm: kworker/u4:15 Tainted: G        W         5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 dump_stack+0x15/0x17 lib/dump_stack.c:113
 process_one_work+0x8d8/0xc10 kernel/workqueue.c:2340
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
BUG: workqueue leaked lock or atomic: kworker/u4:15/0x00000001/29707
     last function: wb_workfn
CPU: 1 PID: 29707 Comm: kworker/u4:15 Tainted: G        W         5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 dump_stack+0x15/0x17 lib/dump_stack.c:113
 process_one_work+0x8d8/0xc10 kernel/workqueue.c:2340
 process_scheduled_works kernel/workqueue.c:2388 [inline]
 worker_thread+0xe02/0x12a0 kernel/workqueue.c:2474
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
BUG: scheduling while atomic: kworker/u4:15/29707/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff81e78da7>] spin_lock include/linux/spinlock.h:363 [inline]
[<ffffffff81e78da7>] ext4_do_update_inode fs/ext4/inode.c:5089 [inline]
[<ffffffff81e78da7>] ext4_mark_iloc_dirty+0x307/0x3f40 fs/ext4/inode.c:5791
CPU: 1 PID: 29707 Comm: kworker/u4:15 Tainted: G        W         5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue:  0x0 (flush-8:0)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 dump_stack+0x15/0x17 lib/dump_stack.c:113
 __schedule_bug+0x195/0x260 kernel/sched/core.c:5707
 schedule_debug kernel/sched/core.c:5734 [inline]
 __schedule+0xd19/0x1590 kernel/sched/core.c:6402
 schedule+0x11f/0x1e0 kernel/sched/core.c:6595
 worker_thread+0xf7f/0x12a0 kernel/workqueue.c:2493
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/06 10:05 android13-5.15-lts 993bed180178 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in wb_workfn
* Struck through repros no longer work on HEAD.