WARNING: ODEBUG bug in trace_suspend_resume (2)

Status: upstream: reported C repro on 2026/08/10 10:24
Subsystems: pm
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+98850521518b962c5bab@syzkaller.appspotmail.com
First crash: 7d11h, last: 1d20h
✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
c8502775 repro-c Reproduced: ✅ WARNING: ODEBUG bug in trace_suspend_resume (2) 2026/08/10 08:58 2026/08/10 08:58 2026/08/10 09:36 5d63f80b
b4260cec assessment-security DenialOfService: ✅ Exploitable: ✅ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ WARNING: ODEBUG bug in trace_suspend_resume (2) 2026/08/09 09:13 2026/08/09 09:13 2026/08/09 09:40 5d63f80b
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly pm report (Aug 2026) 0 (1) 2026/08/11 20:32
[syzbot] [pm?] WARNING: ODEBUG bug in trace_suspend_resume (2) 0 (1) 2026/08/10 10:24
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING: ODEBUG bug in trace_suspend_resume net usb -1 7 287d 337d 0/29 auto-obsoleted due to no activity on 2026/02/06 04:28
Last patch testing requests (1)
Created Duration User Patch Repo Result
2026/08/10 10:02 21m nogikh@google.com https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master report log

Sample crash report:
ODEBUG: object df805d04 is NOT on stack df864000, but annotated.
------------[ cut here ]------------
WARNING: lib/debugobjects.c:672 at debug_object_is_on_stack lib/debugobjects.c:672 [inline], CPU#1: swapper/1/0
WARNING: lib/debugobjects.c:672 at lookup_object_or_alloc.part.0+0x180/0x1ec lib/debugobjects.c:705, CPU#1: swapper/1/0
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: frame pointer underflow
[<80201998>] (dump_backtrace) from [<80201a8c>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:82a20f78 r6:00000000 r5:82333374 r4:00000001
[<80201a74>] (show_stack) from [<8021ec68>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201a74>] (show_stack) from [<8021ec68>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120)
[<8021ec0c>] (dump_stack_lvl) from [<8021ec94>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r7:82a20f78 r6:00000000 r5:8317e200 r4:82c83d40
[<8021ec7c>] (dump_stack) from [<80202590>] (vpanic+0x114/0x320 kernel/panic.c:651)
[<8020247c>] (vpanic) from [<802027d0>] (trace_suspend_resume+0x0/0x100 kernel/panic.c:788)
 r7:8095e608
[<8020279c>] (panic) from [<80251a80>] (check_panic_on_warn kernel/panic.c:525 [inline])
[<8020279c>] (panic) from [<80251a80>] (get_taint+0x0/0x1c kernel/panic.c:520)
 r3:82a0b144 r2:00000001 r1:823190d8 r0:82320a34
[<80251a08>] (check_panic_on_warn) from [<80251bfc>] (__warn+0x98/0x1a4 kernel/panic.c:1104)
[<80251b64>] (__warn) from [<80251e80>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:1136)
 r8:00000009 r7:8238dd84 r6:df805c1c r5:8317e200 r4:00000000
[<80251d0c>] (warn_slowpath_fmt) from [<8095e608>] (debug_object_is_on_stack lib/debugobjects.c:672 [inline])
[<80251d0c>] (warn_slowpath_fmt) from [<8095e608>] (lookup_object_or_alloc.part.0+0x180/0x1ec lib/debugobjects.c:705)
 r10:00000001 r9:81c04360 r8:df805d04 r7:00000000 r6:82d1bbf4 r5:82cfc288
 r4:852e1270
[<8095e488>] (lookup_object_or_alloc.part.0) from [<8095ec18>] (lookup_object_or_alloc lib/debugobjects.c:682 [inline])
[<8095e488>] (lookup_object_or_alloc.part.0) from [<8095ec18>] (__debug_object_init+0x140/0x1d8 lib/debugobjects.c:798)
 r10:0001f930 r9:82cfc2c4 r8:00000001 r7:81c04360 r6:20000113 r5:82d1bbf8
 r4:df805d04 r3:00000001
[<8095ead8>] (__debug_object_init) from [<8095ed04>] (debug_object_init_on_stack lib/debugobjects.c:849 [inline])
[<8095ead8>] (__debug_object_init) from [<8095ed04>] (debug_object_init_on_stack+0x28/0x2c lib/debugobjects.c:844)
 r10:df805eac r9:fffff2a8 r8:00000101 r7:00000000 r6:ddde3e00 r5:82b62308
 r4:00000000
[<8095ecdc>] (debug_object_init_on_stack) from [<80300a84>] (init_rcu_head_on_stack+0x18/0x1c kernel/rcu/update.c:487)
[<80300a6c>] (init_rcu_head_on_stack) from [<80304e4c>] (__synchronize_srcu+0x7c/0xcc kernel/rcu/srcutree.c:1494)
[<80304dd0>] (__synchronize_srcu) from [<80304f38>] (synchronize_srcu_expedited kernel/rcu/srcutree.c:1521 [inline])
[<80304dd0>] (__synchronize_srcu) from [<80304f38>] (synchronize_srcu+0x78/0x14c kernel/rcu/srcutree.c:1577)
 r5:60000113 r4:82b62308
[<80304ec0>] (synchronize_srcu) from [<80bf0cd0>] (wakeup_source_remove drivers/base/power/wakeup.c:201 [inline])
[<80304ec0>] (synchronize_srcu) from [<80bf0cd0>] (wakeup_source_unregister.part.0+0x64/0x1b4 drivers/base/power/wakeup.c:237)
 r7:00000000 r6:862c4100 r5:00000113 r4:86469f00
[<80bf0c6c>] (wakeup_source_unregister.part.0) from [<80bf0e38>] (wakeup_source_unregister+0x18/0x1c drivers/base/power/wakeup.c:236)
 r7:00000000 r6:862c4100 r5:866aa000 r4:866aa008
[<80bf0e20>] (wakeup_source_unregister) from [<812f2368>] (mmc_host_classdev_release+0x1c/0x58 drivers/mmc/core/host.c:69)
[<812f234c>] (mmc_host_classdev_release) from [<80bcd9cc>] (device_release+0x40/0xb0 drivers/base/core.c:2636)
 r5:851bc500 r4:866aa008
[<80bcd98c>] (device_release) from [<81b351d0>] (kobject_cleanup lib/kobject.c:689 [inline])
[<80bcd98c>] (device_release) from [<81b351d0>] (kobject_release lib/kobject.c:720 [inline])
[<80bcd98c>] (device_release) from [<81b351d0>] (kref_put include/linux/kref.h:65 [inline])
[<80bcd98c>] (device_release) from [<81b351d0>] (kobject_put+0xa0/0x258 lib/kobject.c:737)
 r5:81d5ae9c r4:866aa008
[<81b35130>] (kobject_put) from [<80bcdb40>] (put_device+0x18/0x1c drivers/base/core.c:3880)
 r8:00000101 r7:81310b3c r6:866aa000 r5:00000000 r4:866aa000
[<80bcdb28>] (put_device) from [<812f2ac4>] (mmc_free_host+0x28/0x2c drivers/mmc/core/host.c:702)
[<812f2a9c>] (mmc_free_host) from [<81310c9c>] (vub300_delete drivers/mmc/host/vub300.c:379 [inline])
[<812f2a9c>] (mmc_free_host) from [<81310c9c>] (kref_put include/linux/kref.h:65 [inline])
[<812f2a9c>] (mmc_free_host) from [<81310c9c>] (vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline])
[<812f2a9c>] (mmc_free_host) from [<81310c9c>] (vub300_inactivity_timer_expired+0x160/0x1b8 drivers/mmc/host/vub300.c:742)
 r5:00000000 r4:866aaaec
[<81310b3c>] (vub300_inactivity_timer_expired) from [<8032ef48>] (call_timer_fn+0x30/0x268 kernel/time/timer.c:1748)
 r7:81310b3c r6:8317e200 r5:866aaaec r4:866aaaec
[<8032ef18>] (call_timer_fn) from [<8032f41c>] (expire_timers kernel/time/timer.c:1799 [inline])
[<8032ef18>] (call_timer_fn) from [<8032f41c>] (__run_timers+0x29c/0x420 kernel/time/timer.c:2374)
 r10:df805eac r9:fffff2a8 r8:00000000 r7:81310b3c r6:82a0b150 r5:866aaaec
 r4:ddddafc0
[<8032f180>] (__run_timers) from [<8032f608>] (__run_timer_base kernel/time/timer.c:2386 [inline])
[<8032f180>] (__run_timers) from [<8032f608>] (__run_timer_base kernel/time/timer.c:2378 [inline])
[<8032f180>] (__run_timers) from [<8032f608>] (run_timer_base+0x68/0x78 kernel/time/timer.c:2395)
 r10:8317e200 r9:00000082 r8:00000101 r7:00000004 r6:00000002 r5:00000001
 r4:ddddafc0
[<8032f5a0>] (run_timer_base) from [<8032f634>] (run_timer_softirq+0x1c/0x34 kernel/time/timer.c:2405)
 r4:82a03084
[<8032f618>] (run_timer_softirq) from [<8025b0dc>] (handle_softirqs+0x160/0x4e4 kernel/softirq.c:622)
[<8025af7c>] (handle_softirqs) from [<8025b5fc>] (__do_softirq kernel/softirq.c:656 [inline])
[<8025af7c>] (handle_softirqs) from [<8025b5fc>] (invoke_softirq kernel/softirq.c:496 [inline])
[<8025af7c>] (handle_softirqs) from [<8025b5fc>] (__irq_exit_rcu+0x150/0x1d0 kernel/softirq.c:735)
 r10:824e709c r9:8317e200 r8:00000000 r7:df865f18 r6:824e709c r5:82522544
 r4:8317e200
[<8025b4ac>] (__irq_exit_rcu) from [<8025b934>] (irq_exit+0x10/0x18 kernel/softirq.c:764)
 r5:82522544 r4:828d3e6c
[<8025b924>] (irq_exit) from [<81b5d85c>] (generic_handle_arch_irq+0x7c/0x80 kernel/irq/handle.c:293)
[<81b5d7e0>] (generic_handle_arch_irq) from [<81b2a4e0>] (call_with_stack+0x1c/0x20 arch/arm/lib/call_with_stack.S:40)
 r9:8317e200 r8:00000000 r7:df865f4c r6:ffffffff r5:20000013 r4:81b5f0d0
[<81b2a4c4>] (call_with_stack) from [<80200bec>] (__irq_svc+0x8c/0xbc arch/arm/kernel/entry-armv.S:228)
Exception stack(0xdf865f18 to 0xdf865f60)
5f00:                                                       00000001 82333374
5f20: 000780b4 00000001 8317e200 00000001 00000000 828d3170 00000000 82a0b1c4
5f40: 824e709c df865f84 df865f58 df865f68 81b5e500 81b5f0d0 20000013 ffffffff
[<81b5f084>] (default_idle_call) from [<802b80fc>] (cpuidle_idle_call kernel/sched/idle.c:199 [inline])
[<81b5f084>] (default_idle_call) from [<802b80fc>] (do_idle+0x240/0x3c0 kernel/sched/idle.c:355)
 r7:828d3170 r6:00000000 r5:82a0b1a4 r4:8317e200
[<802b7ebc>] (do_idle) from [<802b858c>] (cpu_startup_entry+0x30/0x34 kernel/sched/idle.c:454)
 r10:00000000 r9:414fc0f0 r8:80003000 r7:82c834a4 r6:30c0387d r5:00000001
 r4:00000090
[<802b855c>] (cpu_startup_entry) from [<8022fc54>] (secondary_start_kernel+0x12c/0x198 arch/arm/kernel/smp.c:478)
[<8022fb28>] (secondary_start_kernel) from [<80220094>] (__enable_mmu+0x0/0xc arch/arm/kernel/head.S:446)
 r5:00000000 r4:830b70c0
Rebooting in 86400 seconds..

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/10 10:23 https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master db2ddb871435 3c5eaa21 .config console log report C ci-qemu2-arm32 WARNING: ODEBUG bug in trace_suspend_resume
2026/08/04 18:58 https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master 848acc8ffe1b 3c5eaa21 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING: ODEBUG bug in trace_suspend_resume
* Struck through repros no longer work on HEAD.