BUG: sleeping function called from invalid context at kernel/workqueue.c:4561
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5788, name: udevd
preempt_count: 101, expected: 0
RCU nest depth: 3, expected: 0
locks held by udevd/5788: 6, last CPU#0:
 #0: ffff888113fb6948 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #2: ffff888114be9eb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff888114be9eb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: lruvec_stat_mod_folio+0x76/0x2e0 mm/memcontrol.c:1028
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: get_non_dying_memcg_start mm/memcontrol.c:862 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: get_non_dying_memcg_start mm/memcontrol.c:853 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: mod_memcg_lruvec_state+0xdf/0x280 mm/memcontrol.c:992
 #5: ffffc90000007c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5788 Comm: udevd Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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:9264
 __cancel_work_sync kernel/workqueue.c:4561 [inline]
 cancel_delayed_work_sync+0xb8/0xf0 kernel/workqueue.c:4642
 mmc_free_host+0x19/0x40 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+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 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+0x8f/0xb0 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 bc 93 0b 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 1e 06 85 09 0f 82 c9 02 00 00 8b 35 be 13 85 09 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d bc 93 0b 0f 85 09 03 00 00 48 83 c4
RSP: 0000:ffffc90013167b20 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000001 RSI: ffffffff892bea5b RDI: ffffffff87d2bd80
RBP: ffffffff898e6f20 R08: 000000004d06f11c R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:862 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:853 [inline]
 mod_memcg_lruvec_state+0xf3/0x280 mm/memcontrol.c:992
 mod_lruvec_state mm/memcontrol.c:1018 [inline]
 lruvec_stat_mod_folio+0x251/0x2e0 mm/memcontrol.c:1038
 __folio_mod_stat mm/rmap.c:1346 [inline]
 folio_add_new_anon_rmap+0x48d/0xff0 mm/rmap.c:1706
 map_anon_folio_pte_nopf+0x204/0x500 mm/memory.c:5405
 map_anon_folio_pte_pf mm/memory.c:5416 [inline]
 do_anonymous_page mm/memory.c:5519 [inline]
 do_pte_missing mm/memory.c:4698 [inline]
 handle_pte_fault mm/memory.c:6558 [inline]
 __handle_mm_fault+0x3127/0x3690 mm/memory.c:6707
 handle_mm_fault+0x363/0xa20 mm/memory.c:6876
 do_user_addr_fault+0x5a7/0x11d0 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x66/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7efc1633e6a8
Code: 26 01 00 00 31 d2 4c 39 d3 48 8d 34 29 0f 95 c2 48 29 e8 48 89 73 60 48 c1 e2 02 48 83 c8 01 48 09 ea 48 83 ca 01 48 89 51 08 <48> 89 46 08 48 8d 41 10 48 83 c4 48 5b 5d 41 5c 41 5d 41 5e 41 5f
RSP: 002b:00007ffc8fc2c030 EFLAGS: 00010206
RAX: 0000000000020101 RBX: 00007efc16478ac0 RCX: 000056554a716ef0
RDX: 0000000000005011 RSI: 000056554a71bf00 RDI: 000056554a73c000
RBP: 0000000000005010 R08: 0000000000025111 R09: 0000000000000000
R10: 00007efc16478ac0 R11: 000056554a719000 R12: 0000000000002110
R13: 000056554a716ef0 R14: 0000000000001000 R15: 0000000000005030
 </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 udevd/5788: 6, last CPU#0:
 #0: ffff888113fb6948 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #2: ffff888114be9eb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff888114be9eb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: lruvec_stat_mod_folio+0x76/0x2e0 mm/memcontrol.c:1028
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: get_non_dying_memcg_start mm/memcontrol.c:862 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: get_non_dying_memcg_start mm/memcontrol.c:853 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: mod_memcg_lruvec_state+0xdf/0x280 mm/memcontrol.c:992
 #5: ffffc90000007c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745

stack backtrace:
CPU: 0 UID: 0 PID: 5788 Comm: udevd Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 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+0x8f/0xb0 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 bc 93 0b 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 1e 06 85 09 0f 82 c9 02 00 00 8b 35 be 13 85 09 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d bc 93 0b 0f 85 09 03 00 00 48 83 c4
RSP: 0000:ffffc90013167b20 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000001 RSI: ffffffff892bea5b RDI: ffffffff87d2bd80
RBP: ffffffff898e6f20 R08: 000000004d06f11c R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:862 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:853 [inline]
 mod_memcg_lruvec_state+0xf3/0x280 mm/memcontrol.c:992
 mod_lruvec_state mm/memcontrol.c:1018 [inline]
 lruvec_stat_mod_folio+0x251/0x2e0 mm/memcontrol.c:1038
 __folio_mod_stat mm/rmap.c:1346 [inline]
 folio_add_new_anon_rmap+0x48d/0xff0 mm/rmap.c:1706
 map_anon_folio_pte_nopf+0x204/0x500 mm/memory.c:5405
 map_anon_folio_pte_pf mm/memory.c:5416 [inline]
 do_anonymous_page mm/memory.c:5519 [inline]
 do_pte_missing mm/memory.c:4698 [inline]
 handle_pte_fault mm/memory.c:6558 [inline]
 __handle_mm_fault+0x3127/0x3690 mm/memory.c:6707
 handle_mm_fault+0x363/0xa20 mm/memory.c:6876
 do_user_addr_fault+0x5a7/0x11d0 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x66/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7efc1633e6a8
Code: 26 01 00 00 31 d2 4c 39 d3 48 8d 34 29 0f 95 c2 48 29 e8 48 89 73 60 48 c1 e2 02 48 83 c8 01 48 09 ea 48 83 ca 01 48 89 51 08 <48> 89 46 08 48 8d 41 10 48 83 c4 48 5b 5d 41 5c 41 5d 41 5e 41 5f
RSP: 002b:00007ffc8fc2c030 EFLAGS: 00010206
RAX: 0000000000020101 RBX: 00007efc16478ac0 RCX: 000056554a716ef0
RDX: 0000000000005011 RSI: 000056554a71bf00 RDI: 000056554a73c000
RBP: 0000000000005010 R08: 0000000000025111 R09: 0000000000000000
R10: 00007efc16478ac0 R11: 000056554a719000 R12: 0000000000002110
R13: 000056554a716ef0 R14: 0000000000001000 R15: 0000000000005030
 </TASK>
BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1472
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5788, name: udevd
preempt_count: 101, expected: 0
RCU nest depth: 3, expected: 0
locks held by udevd/5788: 6, last CPU#0:
 #0: ffff888113fb6948 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x11d/0x590 mm/mmap_lock.c:310
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #1: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300 mm/pgtable-generic.c:290
 #2: ffff888114be9eb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline]
 #2: ffff888114be9eb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x10f/0x320 mm/pgtable-generic.c:404
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: lruvec_stat_mod_folio+0x76/0x2e0 mm/memcontrol.c:1028
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: get_non_dying_memcg_start mm/memcontrol.c:862 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: get_non_dying_memcg_start mm/memcontrol.c:853 [inline]
 #4: ffffffff898e6f20 (rcu_read_lock){....}-{1:3}, at: mod_memcg_lruvec_state+0xdf/0x280 mm/memcontrol.c:992
 #5: ffffc90000007c98 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0x11d/0x5f0 kernel/time/timer.c:1745
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5788 Comm: udevd Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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:9264
 __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+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 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+0x8f/0xb0 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 bc 93 0b 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 1e 06 85 09 0f 82 c9 02 00 00 8b 35 be 13 85 09 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d bc 93 0b 0f 85 09 03 00 00 48 83 c4
RSP: 0000:ffffc90013167b20 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000001 RSI: ffffffff892bea5b RDI: ffffffff87d2bd80
RBP: ffffffff898e6f20 R08: 000000004d06f11c R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:862 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:853 [inline]
 mod_memcg_lruvec_state+0xf3/0x280 mm/memcontrol.c:992
 mod_lruvec_state mm/memcontrol.c:1018 [inline]
 lruvec_stat_mod_folio+0x251/0x2e0 mm/memcontrol.c:1038
 __folio_mod_stat mm/rmap.c:1346 [inline]
 folio_add_new_anon_rmap+0x48d/0xff0 mm/rmap.c:1706
 map_anon_folio_pte_nopf+0x204/0x500 mm/memory.c:5405
 map_anon_folio_pte_pf mm/memory.c:5416 [inline]
 do_anonymous_page mm/memory.c:5519 [inline]
 do_pte_missing mm/memory.c:4698 [inline]
 handle_pte_fault mm/memory.c:6558 [inline]
 __handle_mm_fault+0x3127/0x3690 mm/memory.c:6707
 handle_mm_fault+0x363/0xa20 mm/memory.c:6876
 do_user_addr_fault+0x5a7/0x11d0 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x66/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7efc1633e6a8
Code: 26 01 00 00 31 d2 4c 39 d3 48 8d 34 29 0f 95 c2 48 29 e8 48 89 73 60 48 c1 e2 02 48 83 c8 01 48 09 ea 48 83 ca 01 48 89 51 08 <48> 89 46 08 48 8d 41 10 48 83 c4 48 5b 5d 41 5c 41 5d 41 5e 41 5f
RSP: 002b:00007ffc8fc2c030 EFLAGS: 00010206
RAX: 0000000000020101 RBX: 00007efc16478ac0 RCX: 000056554a716ef0
RDX: 0000000000005011 RSI: 000056554a71bf00 RDI: 000056554a73c000
RBP: 0000000000005010 R08: 0000000000025111 R09: 0000000000000000
R10: 00007efc16478ac0 R11: 000056554a719000 R12: 0000000000002110
R13: 000056554a716ef0 R14: 0000000000001000 R15: 0000000000005030
 </TASK>
ODEBUG: object ffffc90000007a60 is NOT on stack ffffc90013160000, but annotated.
------------[ cut here ]------------
1
WARNING: lib/debugobjects.c:672 at debug_object_is_on_stack lib/debugobjects.c:672 [inline], CPU#0: udevd/5788
WARNING: lib/debugobjects.c:672 at lookup_object_or_alloc.part.0.cold+0x19/0x40 lib/debugobjects.c:705, CPU#0: udevd/5788
Modules linked in:
CPU: 0 UID: 0 PID: 5788 Comm: udevd Tainted: G        W           syzkaller #0 PREEMPT(lazy) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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 c3 cc cc cc cc 83 c5 01 89 2d 60 8b 0f 13 4c 89 e6 48 c7 c7 c0 c8 d2 87 e8 21 c2 fa ff 90 <0f> 0b 90 e9 b2 e0 bb 01 83 c5 01 89 2d 3f 8b 0f 13 49 39 c4 73 da
RSP: 0000:ffffc900000078f0 EFLAGS: 00010082
RAX: 0000000000000050 RBX: ffff8881165f09a0 RCX: 0000000000000000
RDX: 0000000000000050 RSI: ffffffff8193b6e9 RDI: fffff52000000f0f
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000102 R11: 0000000000000001 R12: ffffc90000007a60
R13: ffff88811f0edac0 R14: 0000000000000001 R15: 0000000000000000
FS:  00007efc16240880(0000) GS:ffff8882683d5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056554a71bf08 CR3: 0000000116a08000 CR4: 00000000003506f0
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+0x1d9/0x9b0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0x168/0x210 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+0x8f/0xb0 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 bc 93 0b 83 f8 07 0f 87 da 00 00 00 48 0f a3 05 1e 06 85 09 0f 82 c9 02 00 00 8b 35 be 13 85 09 85 f6 0f 85 c7 00 00 00 <48> 8b 44 24 30 65 48 2b 05 2d bc 93 0b 0f 85 09 03 00 00 48 83 c4
RSP: 0000:ffffc90013167b20 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000200
RDX: 0000000000000001 RSI: ffffffff892bea5b RDI: ffffffff87d2bd80
RBP: ffffffff898e6f20 R08: 000000004d06f11c R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:862 [inline]
 get_non_dying_memcg_start mm/memcontrol.c:853 [inline]
 mod_memcg_lruvec_state+0xf3/0x280 mm/memcontrol.c:992
 mod_lruvec_state mm/memcontrol.c:1018 [inline]
 lruvec_stat_mod_folio+0x251/0x2e0 mm/memcontrol.c:1038
 __folio_mod_stat mm/rmap.c:1346 [inline]
 folio_add_new_anon_rmap+0x48d/0xff0 mm/rmap.c:1706
 map_anon_folio_pte_nopf+0x204/0x500 mm/memory.c:5405
 map_anon_folio_pte_pf mm/memory.c:5416 [inline]
 do_anonymous_page mm/memory.c:5519 [inline]
 do_pte_missing mm/memory.c:4698 [inline]
 handle_pte_fault mm/memory.c:6558 [inline]
 __handle_mm_fault+0x3127/0x3690 mm/memory.c:6707
 handle_mm_fault+0x363/0xa20 mm/memory.c:6876
 do_user_addr_fault+0x5a7/0x11d0 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x66/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7efc1633e6a8
Code: 26 01 00 00 31 d2 4c 39 d3 48 8d 34 29 0f 95 c2 48 29 e8 48 89 73 60 48 c1 e2 02 48 83 c8 01 48 09 ea 48 83 ca 01 48 89 51 08 <48> 89 46 08 48 8d 41 10 48 83 c4 48 5b 5d 41 5c 41 5d 41 5e 41 5f
RSP: 002b:00007ffc8fc2c030 EFLAGS: 00010206
RAX: 0000000000020101 RBX: 00007efc16478ac0 RCX: 000056554a716ef0
RDX: 0000000000005011 RSI: 000056554a71bf00 RDI: 000056554a73c000
RBP: 0000000000005010 R08: 0000000000025111 R09: 0000000000000000
R10: 00007efc16478ac0 R11: 000056554a719000 R12: 0000000000002110
R13: 000056554a716ef0 R14: 0000000000001000 R15: 0000000000005030
 </TASK>
----------------
Code disassembly (best guess):
   0:	05 8f bc 93 0b       	add    $0xb93bc8f,%eax
   5:	83 f8 07             	cmp    $0x7,%eax
   8:	0f 87 da 00 00 00    	ja     0xe8
   e:	48 0f a3 05 1e 06 85 	bt     %rax,0x985061e(%rip)        # 0x9850634
  15:	09
  16:	0f 82 c9 02 00 00    	jb     0x2e5
  1c:	8b 35 be 13 85 09    	mov    0x98513be(%rip),%esi        # 0x98513e0
  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 bc 93 	sub    %gs:0xb93bc2d(%rip),%rax        # 0xb93bc64
  36:	0b
  37:	0f 85 09 03 00 00    	jne    0x346
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4