WARNING: suspicious RCU usage in cancel_delayed_work_sync

Status: upstream: reported on 2026/08/14 15:11
Subsystems: mmc
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+9c1988bc953fca2086a3@syzkaller.appspotmail.com
First crash: 28d, last: 1h57m
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
d5fea00b repro-c Reproduced: ✅ ❓ WARNING: suspicious RCU usage in cancel_delayed_work_sync 2026/09/02 20:20 2026/09/02 21:58 2026/09/02 22:47 9941e97d
7f49902c assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ WARNING: suspicious RCU usage in cancel_delayed_work_sync 2026/08/15 00:46 2026/08/15 00:46 2026/08/15 01:12 746171ee
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly mmc report (Sep 2026) 0 (1) 2026/09/02 20:33
[syzbot] [mmc?] WARNING: suspicious RCU usage in cancel_delayed_work_sync 0 (1) 2026/08/14 15:11
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2026/09/04 13:22 13m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git bc35965f6940a9bf834d54187b6088b8eb09206d report job log log

Sample crash report:
=============================
WARNING: suspicious RCU usage
syzkaller #0 Not tainted
-----------------------------
kernel/sched/core.c:9218 Illegal context switch in RCU-sched read-side critical section!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
locks held by syz.4.244/6527: 5, last CPU#1:
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x124/0xa00 mm/mmap.c:1299
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x310 mm/pgtable-generic.c:290
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #4: ffffc90000a18c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745

stack backtrace:
CPU: 1 UID: 0 PID: 6527 Comm: syz.4.244 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 lockdep_rcu_suspicious.cold+0x4f/0xb2 kernel/locking/lockdep.c:6972
 __might_resched+0x2d9/0x330 kernel/sched/core.c:9218
 __cancel_work_sync kernel/workqueue.c:4561 [inline]
 cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4642
 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:700
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947
Code: 05 8f ec a4 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 9e cf 5d 0f 0f 82 c9 02 00 00 8b 35 3e 01 5e 0f 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d ec a4 12 0f 85 09 03 00 00 48 83 c4
RSP: 0018:ffffc90003bc7618 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000002 RSI: ffffffff8e3c5c3d RDI: ffffffff8c621080
RBP: ffffffff8edec220 R08: 00000000ef91bba8 R09: 000000000000001e
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 pfn_valid+0xd8/0x4b0 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x540 mm/page_table_check.c:70
 __page_table_check_pte_clear+0x10f/0x120 mm/page_table_check.c:155
 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1259 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x2c43/0x48e0 mm/memory.c:2240
 unmap_vmas+0x299/0x5f0 mm/memory.c:2309
 exit_mmap+0x1ef/0xa00 mm/mmap.c:1315
 __mmput+0x12a/0x410 kernel/fork.c:1193
 mmput+0x67/0x80 kernel/fork.c:1216
 exit_mm kernel/exit.c:614 [inline]
 do_exit+0x8b1/0x2ae0 kernel/exit.c:996
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1151
 __do_sys_exit_group kernel/exit.c:1162 [inline]
 __se_sys_exit_group kernel/exit.c:1160 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1160
 x64_sys_call+0x1567/0x1570 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c2fd9e159
Code: Unable to access opcode bytes at 0x7f8c2fd9e12f.
RSP: 002b:00007ffe62a11bc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c2fd9e159
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe62a11c2c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000002b
R13: 00000000000927c0 R14: 0000000000016399 R15: 00007ffe62a11c80
 </TASK>
BUG: sleeping function called from invalid context at kernel/workqueue.c:4561
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6527, name: syz.4.244
preempt_count: 102, expected: 0
RCU nest depth: 1, expected: 0
locks held by syz.4.244/6527: 5, last CPU#1:
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x124/0xa00 mm/mmap.c:1299
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x310 mm/pgtable-generic.c:290
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #4: ffffc90000a18c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 6527 Comm: syz.4.244 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 __might_resched.cold+0x1dc/0x222 kernel/sched/core.c:9256
 __cancel_work_sync kernel/workqueue.c:4561 [inline]
 cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4642
 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:700
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947
Code: 05 8f ec a4 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 9e cf 5d 0f 0f 82 c9 02 00 00 8b 35 3e 01 5e 0f 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d ec a4 12 0f 85 09 03 00 00 48 83 c4
RSP: 0018:ffffc90003bc7618 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000002 RSI: ffffffff8e3c5c3d RDI: ffffffff8c621080
RBP: ffffffff8edec220 R08: 00000000ef91bba8 R09: 000000000000001e
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 pfn_valid+0xd8/0x4b0 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x540 mm/page_table_check.c:70
 __page_table_check_pte_clear+0x10f/0x120 mm/page_table_check.c:155
 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1259 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x2c43/0x48e0 mm/memory.c:2240
 unmap_vmas+0x299/0x5f0 mm/memory.c:2309
 exit_mmap+0x1ef/0xa00 mm/mmap.c:1315
 __mmput+0x12a/0x410 kernel/fork.c:1193
 mmput+0x67/0x80 kernel/fork.c:1216
 exit_mm kernel/exit.c:614 [inline]
 do_exit+0x8b1/0x2ae0 kernel/exit.c:996
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1151
 __do_sys_exit_group kernel/exit.c:1162 [inline]
 __se_sys_exit_group kernel/exit.c:1160 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1160
 x64_sys_call+0x1567/0x1570 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c2fd9e159
Code: Unable to access opcode bytes at 0x7f8c2fd9e12f.
RSP: 002b:00007ffe62a11bc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c2fd9e159
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe62a11c2c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000002b
R13: 00000000000927c0 R14: 0000000000016399 R15: 00007ffe62a11c80
 </TASK>

=============================
WARNING: suspicious RCU usage
syzkaller #0 Tainted: G        W          
-----------------------------
kernel/rcu/srcutree.c:1464 Illegal synchronize_srcu() in same-type SRCU (or in RCU) read-side critical section!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
locks held by syz.4.244/6527: 5, last CPU#1:
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x124/0xa00 mm/mmap.c:1299
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x310 mm/pgtable-generic.c:290
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #4: ffffc90000a18c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745

stack backtrace:
CPU: 1 UID: 0 PID: 6527 Comm: syz.4.244 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 lockdep_rcu_suspicious.cold+0x4f/0xb2 kernel/locking/lockdep.c:6972
 __synchronize_srcu+0x29d/0x300 kernel/rcu/srcutree.c:1464
 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
 wakeup_source_unregister.part.0+0x12c/0x540 drivers/base/power/wakeup.c:237
 wakeup_source_unregister+0x1f/0x30 drivers/base/power/wakeup.c:236
 mmc_host_classdev_release+0x42/0x120 drivers/mmc/core/host.c:69
 device_release+0xd2/0x270 drivers/base/core.c:2640
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3884
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947
Code: 05 8f ec a4 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 9e cf 5d 0f 0f 82 c9 02 00 00 8b 35 3e 01 5e 0f 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d ec a4 12 0f 85 09 03 00 00 48 83 c4
RSP: 0018:ffffc90003bc7618 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000002 RSI: ffffffff8e3c5c3d RDI: ffffffff8c621080
RBP: ffffffff8edec220 R08: 00000000ef91bba8 R09: 000000000000001e
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 pfn_valid+0xd8/0x4b0 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x540 mm/page_table_check.c:70
 __page_table_check_pte_clear+0x10f/0x120 mm/page_table_check.c:155
 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1259 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x2c43/0x48e0 mm/memory.c:2240
 unmap_vmas+0x299/0x5f0 mm/memory.c:2309
 exit_mmap+0x1ef/0xa00 mm/mmap.c:1315
 __mmput+0x12a/0x410 kernel/fork.c:1193
 mmput+0x67/0x80 kernel/fork.c:1216
 exit_mm kernel/exit.c:614 [inline]
 do_exit+0x8b1/0x2ae0 kernel/exit.c:996
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1151
 __do_sys_exit_group kernel/exit.c:1162 [inline]
 __se_sys_exit_group kernel/exit.c:1160 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1160
 x64_sys_call+0x1567/0x1570 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c2fd9e159
Code: Unable to access opcode bytes at 0x7f8c2fd9e12f.
RSP: 002b:00007ffe62a11bc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c2fd9e159
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe62a11c2c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000002b
R13: 00000000000927c0 R14: 0000000000016399 R15: 00007ffe62a11c80
 </TASK>
BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1472
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6527, name: syz.4.244
preempt_count: 102, expected: 0
RCU nest depth: 1, expected: 0
locks held by syz.4.244/6527: 5, last CPU#1:
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock include/linux/mmap_lock.h:600 [inline]
 #0: ffff88807e524378 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x124/0xa00 mm/mmap.c:1299
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff8edec2e0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x310 mm/pgtable-generic.c:290
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff8880284363d8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 #3: ffffffff8edec220 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xbc/0x4b0 include/linux/mmzone.h:2276
 #4: ffffc90000a18c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 6527 Comm: syz.4.244 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 __might_resched.cold+0x1dc/0x222 kernel/sched/core.c:9256
 __synchronize_srcu+0x13c/0x300 kernel/rcu/srcutree.c:1472
 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
 wakeup_source_unregister.part.0+0x12c/0x540 drivers/base/power/wakeup.c:237
 wakeup_source_unregister+0x1f/0x30 drivers/base/power/wakeup.c:236
 mmc_host_classdev_release+0x42/0x120 drivers/mmc/core/host.c:69
 device_release+0xd2/0x270 drivers/base/core.c:2640
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3884
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947
Code: 05 8f ec a4 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 9e cf 5d 0f 0f 82 c9 02 00 00 8b 35 3e 01 5e 0f 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d ec a4 12 0f 85 09 03 00 00 48 83 c4
RSP: 0018:ffffc90003bc7618 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000002 RSI: ffffffff8e3c5c3d RDI: ffffffff8c621080
RBP: ffffffff8edec220 R08: 00000000ef91bba8 R09: 000000000000001e
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 pfn_valid+0xd8/0x4b0 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x540 mm/page_table_check.c:70
 __page_table_check_pte_clear+0x10f/0x120 mm/page_table_check.c:155
 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1259 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x2c43/0x48e0 mm/memory.c:2240
 unmap_vmas+0x299/0x5f0 mm/memory.c:2309
 exit_mmap+0x1ef/0xa00 mm/mmap.c:1315
 __mmput+0x12a/0x410 kernel/fork.c:1193
 mmput+0x67/0x80 kernel/fork.c:1216
 exit_mm kernel/exit.c:614 [inline]
 do_exit+0x8b1/0x2ae0 kernel/exit.c:996
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1151
 __do_sys_exit_group kernel/exit.c:1162 [inline]
 __se_sys_exit_group kernel/exit.c:1160 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1160
 x64_sys_call+0x1567/0x1570 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c2fd9e159
Code: Unable to access opcode bytes at 0x7f8c2fd9e12f.
RSP: 002b:00007ffe62a11bc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c2fd9e159
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe62a11c2c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000002b
R13: 00000000000927c0 R14: 0000000000016399 R15: 00007ffe62a11c80
 </TASK>
ODEBUG: object ffffc90000a18a60 is NOT on stack ffffc90003bc0000, but annotated.
------------[ cut here ]------------
1
WARNING: lib/debugobjects.c:672 at debug_object_is_on_stack lib/debugobjects.c:672 [inline], CPU#1: syz.4.244/6527
WARNING: lib/debugobjects.c:672 at lookup_object_or_alloc.part.0.cold+0x19/0x40 lib/debugobjects.c:705, CPU#1: syz.4.244/6527
Modules linked in:
CPU: 1 UID: 0 PID: 6527 Comm: syz.4.244 Tainted: G        W           syzkaller #0 PREEMPT(full) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:672 [inline]
RIP: 0010:lookup_object_or_alloc.part.0.cold+0x19/0x40 lib/debugobjects.c:705
Code: c4 60 5b 5d 41 5c 41 5d 41 5e 41 5f e9 99 e0 9c 0a 83 c5 01 89 2d 90 c4 7c 1a 4c 89 e6 48 c7 c7 c0 1b 62 8c e8 11 b3 eb ff 90 <0f> 0b 90 e9 f2 a6 fd 03 83 c5 01 89 2d 6f c4 7c 1a 49 39 c4 73 da
RSP: 0018:ffffc90000a188f0 EFLAGS: 00010082
RAX: 0000000000000050 RBX: ffff888058e1d4d0 RCX: 0000000000000000
RDX: 0000000000000050 RSI: ffffffff81ea06f9 RDI: fffff5200014310f
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000103 R11: 0000000000000001 R12: ffffc90000a18a60
R13: ffff88802d1d8000 R14: 0000000000000001 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888123c5d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac33f34ff8 CR3: 0000000073d7b000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 lookup_object_or_alloc lib/debugobjects.c:682 [inline]
 __debug_object_init+0x2a9/0x3d0 lib/debugobjects.c:798
 __synchronize_srcu+0x1c3/0x300 kernel/rcu/srcutree.c:1475
 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline]
 wakeup_source_unregister.part.0+0x12c/0x540 drivers/base/power/wakeup.c:237
 wakeup_source_unregister+0x1f/0x30 drivers/base/power/wakeup.c:236
 mmc_host_classdev_release+0x42/0x120 drivers/mmc/core/host.c:69
 device_release+0xd2/0x270 drivers/base/core.c:2640
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1f7/0x640 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3884
 vub300_delete drivers/mmc/host/vub300.c:379 [inline]
 kref_put include/linux/kref.h:65 [inline]
 vub300_inactivity_timer_expired drivers/mmc/host/vub300.c:747 [inline]
 vub300_inactivity_timer_expired+0x42f/0x550 drivers/mmc/host/vub300.c:742
 call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
 expire_timers kernel/time/timer.c:1799 [inline]
 __run_timers+0x757/0xb00 kernel/time/timer.c:2374
 __run_timer_base kernel/time/timer.c:2386 [inline]
 __run_timer_base kernel/time/timer.c:2378 [inline]
 run_timer_base+0x114/0x190 kernel/time/timer.c:2395
 run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x5e/0x380 kernel/locking/lockdep.c:5947
Code: 05 8f ec a4 12 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 9e cf 5d 0f 0f 82 c9 02 00 00 8b 35 3e 01 5e 0f 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d ec a4 12 0f 85 09 03 00 00 48 83 c4
RSP: 0018:ffffc90003bc7618 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000002 RSI: ffffffff8e3c5c3d RDI: ffffffff8c621080
RBP: ffffffff8edec220 R08: 00000000ef91bba8 R09: 000000000000001e
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:947 [inline]
 pfn_valid+0xd8/0x4b0 include/linux/mmzone.h:2276
 page_table_check_clear+0x21/0x540 mm/page_table_check.c:70
 __page_table_check_pte_clear+0x10f/0x120 mm/page_table_check.c:155
 page_table_check_pte_clear include/linux/page_table_check.h:55 [inline]
 ptep_get_and_clear_full arch/x86/include/asm/pgtable.h:1259 [inline]
 get_and_clear_full_ptes include/linux/pgtable.h:879 [inline]
 zap_present_folio_ptes mm/memory.c:1779 [inline]
 zap_present_ptes mm/memory.c:1861 [inline]
 do_zap_pte_range mm/memory.c:1963 [inline]
 zap_pte_range mm/memory.c:2065 [inline]
 zap_pmd_range mm/memory.c:2151 [inline]
 zap_pud_range mm/memory.c:2179 [inline]
 zap_p4d_range mm/memory.c:2200 [inline]
 __zap_vma_range+0x2c43/0x48e0 mm/memory.c:2240
 unmap_vmas+0x299/0x5f0 mm/memory.c:2309
 exit_mmap+0x1ef/0xa00 mm/mmap.c:1315
 __mmput+0x12a/0x410 kernel/fork.c:1193
 mmput+0x67/0x80 kernel/fork.c:1216
 exit_mm kernel/exit.c:614 [inline]
 do_exit+0x8b1/0x2ae0 kernel/exit.c:996
 do_group_exit+0xd5/0x2a0 kernel/exit.c:1151
 __do_sys_exit_group kernel/exit.c:1162 [inline]
 __se_sys_exit_group kernel/exit.c:1160 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1160
 x64_sys_call+0x1567/0x1570 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c2fd9e159
Code: Unable to access opcode bytes at 0x7f8c2fd9e12f.
RSP: 002b:00007ffe62a11bc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c2fd9e159
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe62a11c2c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 000000000000002b
R13: 00000000000927c0 R14: 0000000000016399 R15: 00007ffe62a11c80
 </TASK>
----------------
Code disassembly (best guess):
   0:	05 8f ec a4 12       	add    $0x12a4ec8f,%eax
   5:	83 f8 07             	cmp    $0x7,%eax
   8:	0f 87 da 00 00 00    	ja     0xe8
   e:	48 0f a3 05 9e cf 5d 	bt     %rax,0xf5dcf9e(%rip)        # 0xf5dcfb4
  15:	0f
  16:	0f 82 c9 02 00 00    	jb     0x2e5
  1c:	8b 35 3e 01 5e 0f    	mov    0xf5e013e(%rip),%esi        # 0xf5e0160
  22:	85 f6                	test   %esi,%esi
  24:	0f 85 c7 00 00 00    	jne    0xf1
* 2a:	48 8b 44 24 30       	mov    0x30(%rsp),%rax <-- trapping instruction
  2f:	65 48 2b 05 2d ec a4 	sub    %gs:0x12a4ec2d(%rip),%rax        # 0x12a4ec64
  36:	12
  37:	0f 85 09 03 00 00    	jne    0x346
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Crashes (202):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/08 21:01 upstream 5acbae5f7eb3 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/07 00:13 upstream 2beb1b31a12b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/04 07:58 upstream 841e384b841a 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/03 17:52 upstream 940de590b839 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/08/17 14:09 upstream 8d3ae59288f1 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 07:24 upstream 28924df2a08f 680aa3e1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 16:18 upstream 1fc5a74b108f 4f7b22a0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 18:02 upstream 4d7d9486c04d 4f7b22a0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 15:39 upstream 4d7d9486c04d 4f7b22a0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 09:25 upstream 654ae5d73c05 4f7b22a0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/11 17:54 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dbe68462fa65 b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/11 15:45 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dbe68462fa65 b6a5eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/11 09:27 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ed2050bc671b 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/11 03:56 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ed2050bc671b 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/10 21:18 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8d70a378e702 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/10 19:50 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8d70a378e702 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/10 15:48 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8d70a378e702 1fe56c0a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/10 01:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/09 21:57 linux-next 9d80aa4617b3 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/09 17:21 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/09 15:29 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/09 11:17 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/09 04:08 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 18:59 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 17:50 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 16:53 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 15:18 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 14:17 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 03:22 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/08 01:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/07 22:33 linux-next 9d80aa4617b3 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/07 20:14 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/07 16:59 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 34c9c5517033 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/07 07:44 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/07 02:46 linux-next 9d80aa4617b3 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 23:03 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 21:36 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 20:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 17:42 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 15:02 linux-next 9d80aa4617b3 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 08:48 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 07:41 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/06 01:07 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 21:27 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 20:15 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 11:02 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 05:21 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 03:35 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/05 00:20 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing edc1518454f6 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/04 06:44 linux-next 9d80aa4617b3 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/08/14 16:56 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bdab5605259b 6f9b3e89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/08/14 05:43 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 05abeffcc27e b13552fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/08/13 20:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 5d5fd841c346 b13552fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING: suspicious RCU usage in cancel_delayed_work_sync
2026/09/04 22:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 5445d6419962 3f042c7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING: suspicious RCU usage in cancel_delayed_work_sync
* Struck through repros no longer work on HEAD.