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BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred

Status: upstream: reported C repro on 2024/02/18 15:12
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+b7ad5586a2f214813a7d@syzkaller.appspotmail.com
First crash: 69d, last: 2d12h
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2024/02/18 lts (merge base) 6139f2a02fe0 C [report] BUG: scheduling while atomic in exit_to_user_mode_loop
2024/02/18 upstream (ToT) c02197fc9076 C Didn't crash
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred origin:lts C 34 7h20m 74d 0/2 upstream: reported C repro on 2024/02/13 02:25
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2024/03/04 01:13 9m retest repro android13-5.15-lts report log
2024/03/04 00:53 14m retest repro android13-5.15-lts report log

Sample crash report:
BUG: workqueue leaked lock or atomic: kworker/0:1/0x00000001/20
     last function: bpf_prog_free_deferred
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events bpf_prog_free_deferred
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/0:1/0x00000001/20
     last function: bpf_map_free_deferred
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events bpf_map_free_deferred
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/0:1/0x00000001/20
     last function: srcu_invoke_callbacks
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: rcu_gp srcu_invoke_callbacks
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/0:1/0x00000001/20
     last function: vmstat_shepherd
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events vmstat_shepherd
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/0:1/0x00000001/20
     last function: vmstat_update
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: mm_percpu_wq vmstat_update
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/0:1/0x00000001/20
     last function: psi_avgs_work
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events psi_avgs_work
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: scheduling while atomic: kworker/0:1/20/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff81ac4c0d>] spin_lock include/linux/spinlock.h:363 [inline]
[<ffffffff81ac4c0d>] __purge_vmap_area_lazy+0x28d/0x1690 mm/vmalloc.c:1697
CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue:  0x0 (events)
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 (25):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/22 01:39 android13-5.15-lts ad06eaf051cd af24b050 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/21 13:45 android13-5.15-lts ad06eaf051cd af24b050 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/13 16:59 android13-5.15-lts 993bed180178 c8349e48 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/10 07:19 android13-5.15-lts 993bed180178 171ec371 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/04 04:24 android13-5.15-lts 993bed180178 51c4dcff .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/03/14 06:11 android13-5.15-lts 993bed180178 f919f202 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/02/19 00:06 android13-5.15-lts 993bed180178 578f7538 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/02/18 15:10 android13-5.15-lts 993bed180178 578f7538 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/23 06:26 android13-5.15-lts ad06eaf051cd 36c961ad .config console log report syz [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/25 03:07 android13-5.15-lts ad06eaf051cd 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/24 14:02 android13-5.15-lts ad06eaf051cd 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/24 00:16 android13-5.15-lts ad06eaf051cd 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/17 05:39 android13-5.15-lts ad06eaf051cd 18f6e127 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/16 10:08 android13-5.15-lts ad06eaf051cd 0d592ce4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/15 07:17 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/15 04:01 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/15 02:28 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/13 18:40 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/13 04:16 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/07 03:41 android13-5.15-lts 993bed180178 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/06 22:49 android13-5.15-lts 993bed180178 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/04/05 04:12 android13-5.15-lts 993bed180178 0ee3535e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/03/27 06:51 android13-5.15-lts 993bed180178 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/03/25 09:10 android13-5.15-lts 993bed180178 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
2024/03/20 08:07 android13-5.15-lts 993bed180178 a485f239 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: workqueue leaked lock or atomic in bpf_prog_free_deferred
* Struck through repros no longer work on HEAD.