BUG: sleeping function called from invalid context at kernel/workqueue.c:3414 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 10436, name: syz-executor preempt_count: 101, expected: 0 RCU nest depth: 1, expected: 0 2 locks held by syz-executor/10436: #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline] #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline] #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: page_ext_get+0x22/0x2b0 mm/page_ext.c:508 #1: ffffc900001f0be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 Preemption disabled at: [] preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892 CPU: 1 PID: 10436 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 __might_resched+0x48d/0x5f0 kernel/sched/core.c:10212 start_flush_work kernel/workqueue.c:3414 [inline] __flush_work+0x10f/0xac0 kernel/workqueue.c:3474 __cancel_work_timer+0x3f8/0x560 kernel/workqueue.c:3562 mmc_free_host+0x19/0x30 drivers/mmc/core/host.c:694 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256 Code: 33 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 53 28 3d 09 e8 0e 23 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc90003266ec0 EFLAGS: 00000282 RAX: 736aebddd0084900 RBX: 0000000000000000 RCX: 736aebddd0084900 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d3ba0 RBP: ffffc90003266f10 R08: ffffffff8e8c316f R09: 1ffffffff1d1862d R10: dffffc0000000000 R11: fffffbfff1d1862e R12: ffff88802ace9e00 R13: 1ffff110171e79a1 R14: dffffc0000000000 R15: ffff8880b8f3cd08 context_switch kernel/sched/core.c:5385 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6701 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45 unwind_next_frame+0x201c/0x2990 arch/x86/kernel/unwind_orc.c:672 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 save_stack+0x125/0x230 mm/page_owner.c:128 __reset_page_owner+0x4e/0x190 mm/page_owner.c:149 reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1182 [inline] free_unref_page_prepare+0x7d7/0x8f0 mm/page_alloc.c:2366 free_unref_page_list+0xbe/0x860 mm/page_alloc.c:2505 release_pages+0x208a/0x2300 mm/swap.c:1022 __folio_batch_release+0x71/0xe0 mm/swap.c:1042 folio_batch_release include/linux/pagevec.h:83 [inline] shmem_undo_range+0x5ff/0x1a80 mm/shmem.c:1026 shmem_truncate_range mm/shmem.c:1135 [inline] shmem_evict_inode+0x285/0xa70 mm/shmem.c:1264 evict+0x4b7/0x8a0 fs/inode.c:705 __dentry_kill+0x412/0x630 fs/dcache.c:611 dentry_kill+0xb8/0x290 fs/dcache.c:-1 dput+0xfe/0x1e0 fs/dcache.c:918 __fput+0x5b2/0x940 fs/file_table.c:426 task_work_run+0x1d4/0x260 kernel/task_work.c:245 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:305 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f92ff79f397 Code: a2 c7 05 5c 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff9a7acd48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f92ff83448b RCX: 00007f92ff79f397 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff9a7ace00 RBP: 00007fff9a7ace00 R08: 00007fff9a7ade00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9a7ade90 R13: 00007f92ff83448b R14: 0000000000072db9 R15: 00007fff9a7aded0 ================================ WARNING: inconsistent lock state syzkaller #0 Tainted: G W -------------------------------- inconsistent {SOFTIRQ-ON-R} -> {IN-SOFTIRQ-W} usage. syz-executor/10436 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff8da25110 (wakeup_srcu){.+-+}-{0:0}, at: srcu_lock_sync include/linux/srcu.h:128 [inline] ffffffff8da25110 (wakeup_srcu){.+-+}-{0:0}, at: __synchronize_srcu+0xae/0x3d0 kernel/rcu/srcutree.c:1371 {SOFTIRQ-ON-R} state was registered at: lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5756 srcu_lock_acquire include/linux/srcu.h:116 [inline] srcu_read_lock include/linux/srcu.h:215 [inline] pm_print_active_wakeup_sources+0x5d/0x310 drivers/base/power/wakeup.c:846 pm_get_wakeup_count+0x1cf/0x300 drivers/base/power/wakeup.c:978 wakeup_count_show+0x86/0xf0 kernel/power/main.c:757 sysfs_kf_seq_show+0x34d/0x4c0 fs/sysfs/file.c:59 seq_read_iter+0x464/0xc50 fs/seq_file.c:230 call_read_iter include/linux/fs.h:2012 [inline] copy_splice_read+0x3f2/0x8b0 fs/splice.c:364 splice_direct_to_actor+0x261/0x8e0 fs/splice.c:1069 do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194 do_sendfile+0x52b/0xe80 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 irq event stamp: 437898 hardirqs last enabled at (437898): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (437898): [] _raw_spin_unlock_irqrestore+0x86/0x120 kernel/locking/spinlock.c:194 hardirqs last disabled at (437897): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (437897): [] _raw_spin_lock_irqsave+0x8f/0x100 kernel/locking/spinlock.c:162 softirqs last enabled at (437078): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (437078): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (437078): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 softirqs last disabled at (437659): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (437659): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (437659): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(wakeup_srcu); lock(wakeup_srcu); *** DEADLOCK *** 2 locks held by syz-executor/10436: #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline] #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline] #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: page_ext_get+0x22/0x2b0 mm/page_ext.c:508 #1: ffffc900001f0be0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd2/0x540 kernel/time/timer.c:1698 stack backtrace: CPU: 1 PID: 10436 Comm: syz-executor Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 valid_state+0x13b/0x1d0 kernel/locking/lockdep.c:4013 mark_lock_irq+0xd3/0x900 kernel/locking/lockdep.c:4222 mark_lock+0x208/0x320 kernel/locking/lockdep.c:4678 mark_usage kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0xcfc/0x7d80 kernel/locking/lockdep.c:5091 lock_sync+0x155/0x290 kernel/locking/lockdep.c:5803 srcu_lock_sync include/linux/srcu.h:128 [inline] __synchronize_srcu+0xc2/0x3d0 kernel/rcu/srcutree.c:1371 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline] wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77 device_release+0xbc/0x1e0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x21b/0x450 lib/kobject.c:737 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256 Code: 33 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 53 28 3d 09 e8 0e 23 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc90003266ec0 EFLAGS: 00000282 RAX: 736aebddd0084900 RBX: 0000000000000000 RCX: 736aebddd0084900 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d3ba0 RBP: ffffc90003266f10 R08: ffffffff8e8c316f R09: 1ffffffff1d1862d R10: dffffc0000000000 R11: fffffbfff1d1862e R12: ffff88802ace9e00 R13: 1ffff110171e79a1 R14: dffffc0000000000 R15: ffff8880b8f3cd08 context_switch kernel/sched/core.c:5385 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6701 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45 unwind_next_frame+0x201c/0x2990 arch/x86/kernel/unwind_orc.c:672 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 save_stack+0x125/0x230 mm/page_owner.c:128 __reset_page_owner+0x4e/0x190 mm/page_owner.c:149 reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1182 [inline] free_unref_page_prepare+0x7d7/0x8f0 mm/page_alloc.c:2366 free_unref_page_list+0xbe/0x860 mm/page_alloc.c:2505 release_pages+0x208a/0x2300 mm/swap.c:1022 __folio_batch_release+0x71/0xe0 mm/swap.c:1042 folio_batch_release include/linux/pagevec.h:83 [inline] shmem_undo_range+0x5ff/0x1a80 mm/shmem.c:1026 shmem_truncate_range mm/shmem.c:1135 [inline] shmem_evict_inode+0x285/0xa70 mm/shmem.c:1264 evict+0x4b7/0x8a0 fs/inode.c:705 __dentry_kill+0x412/0x630 fs/dcache.c:611 dentry_kill+0xb8/0x290 fs/dcache.c:-1 dput+0xfe/0x1e0 fs/dcache.c:918 __fput+0x5b2/0x940 fs/file_table.c:426 task_work_run+0x1d4/0x260 kernel/task_work.c:245 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:305 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f92ff79f397 Code: a2 c7 05 5c 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff9a7acd48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f92ff83448b RCX: 00007f92ff79f397 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff9a7ace00 RBP: 00007fff9a7ace00 R08: 00007fff9a7ade00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9a7ade90 R13: 00007f92ff83448b R14: 0000000000072db9 R15: 00007fff9a7aded0 BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1381 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 10436, name: syz-executor preempt_count: 101, expected: 0 RCU nest depth: 1, expected: 0 INFO: lockdep is turned off. Preemption disabled at: [] preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892 CPU: 1 PID: 10436 Comm: syz-executor Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 __might_resched+0x48d/0x5f0 kernel/sched/core.c:10212 __synchronize_srcu+0x197/0x3d0 kernel/rcu/srcutree.c:1381 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline] wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77 device_release+0xbc/0x1e0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x21b/0x450 lib/kobject.c:737 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256 Code: 33 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 53 28 3d 09 e8 0e 23 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc90003266ec0 EFLAGS: 00000282 RAX: 736aebddd0084900 RBX: 0000000000000000 RCX: 736aebddd0084900 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d3ba0 RBP: ffffc90003266f10 R08: ffffffff8e8c316f R09: 1ffffffff1d1862d R10: dffffc0000000000 R11: fffffbfff1d1862e R12: ffff88802ace9e00 R13: 1ffff110171e79a1 R14: dffffc0000000000 R15: ffff8880b8f3cd08 context_switch kernel/sched/core.c:5385 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6701 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45 unwind_next_frame+0x201c/0x2990 arch/x86/kernel/unwind_orc.c:672 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 save_stack+0x125/0x230 mm/page_owner.c:128 __reset_page_owner+0x4e/0x190 mm/page_owner.c:149 reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1182 [inline] free_unref_page_prepare+0x7d7/0x8f0 mm/page_alloc.c:2366 free_unref_page_list+0xbe/0x860 mm/page_alloc.c:2505 release_pages+0x208a/0x2300 mm/swap.c:1022 __folio_batch_release+0x71/0xe0 mm/swap.c:1042 folio_batch_release include/linux/pagevec.h:83 [inline] shmem_undo_range+0x5ff/0x1a80 mm/shmem.c:1026 shmem_truncate_range mm/shmem.c:1135 [inline] shmem_evict_inode+0x285/0xa70 mm/shmem.c:1264 evict+0x4b7/0x8a0 fs/inode.c:705 __dentry_kill+0x412/0x630 fs/dcache.c:611 dentry_kill+0xb8/0x290 fs/dcache.c:-1 dput+0xfe/0x1e0 fs/dcache.c:918 __fput+0x5b2/0x940 fs/file_table.c:426 task_work_run+0x1d4/0x260 kernel/task_work.c:245 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:305 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f92ff79f397 Code: a2 c7 05 5c 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff9a7acd48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f92ff83448b RCX: 00007f92ff79f397 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff9a7ace00 RBP: 00007fff9a7ace00 R08: 00007fff9a7ade00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9a7ade90 R13: 00007f92ff83448b R14: 0000000000072db9 R15: 00007fff9a7aded0 ODEBUG: object ffffc900001f09c0 is NOT on stack ffffc90003260000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 10436 at lib/debugobjects.c:558 debug_object_is_on_stack lib/debugobjects.c:-1 [inline] WARNING: CPU: 1 PID: 10436 at lib/debugobjects.c:558 lookup_object_or_alloc lib/debugobjects.c:591 [inline] WARNING: CPU: 1 PID: 10436 at lib/debugobjects.c:558 __debug_object_init+0x18d/0x450 lib/debugobjects.c:672 Modules linked in: CPU: 1 PID: 10436 Comm: syz-executor Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:558 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:591 [inline] RIP: 0010:__debug_object_init+0x18d/0x450 lib/debugobjects.c:672 Code: 24 08 74 2f 41 ff c6 44 89 35 2f 5b 25 13 48 c7 c1 40 44 1d 8b 48 c7 c7 a0 44 1d 8b 84 c0 48 0f 45 f9 48 89 de e8 33 98 4a 06 <0f> 0b eb 05 4c 8b 7c 24 18 4d 8d 65 10 4d 89 e6 49 c1 ee 03 41 0f RSP: 0018:ffffc900001f0928 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc900001f09c0 RCX: 736aebddd0084900 RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffc900001f0527 R09: 1ffff9200003e0a4 R10: dffffc0000000000 R11: fffff5200003e0a5 R12: ffff88802ace9e20 R13: ffff88805f7c7a10 R14: 0000000000000001 R15: ffffffff8acbe000 FS: 000055558b77f500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000040 CR3: 00000000690da000 CR4: 00000000003506e0 Call Trace: __synchronize_srcu+0x2ae/0x3d0 kernel/rcu/srcutree.c:1384 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline] wakeup_source_unregister+0x116/0x190 drivers/base/power/wakeup.c:242 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:77 device_release+0xbc/0x1e0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x21b/0x450 lib/kobject.c:737 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256 Code: 33 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 53 28 3d 09 e8 0e 23 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc90003266ec0 EFLAGS: 00000282 RAX: 736aebddd0084900 RBX: 0000000000000000 RCX: 736aebddd0084900 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d3ba0 RBP: ffffc90003266f10 R08: ffffffff8e8c316f R09: 1ffffffff1d1862d R10: dffffc0000000000 R11: fffffbfff1d1862e R12: ffff88802ace9e00 R13: 1ffff110171e79a1 R14: dffffc0000000000 R15: ffff8880b8f3cd08 context_switch kernel/sched/core.c:5385 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6701 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45 unwind_next_frame+0x201c/0x2990 arch/x86/kernel/unwind_orc.c:672 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122 save_stack+0x125/0x230 mm/page_owner.c:128 __reset_page_owner+0x4e/0x190 mm/page_owner.c:149 reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1182 [inline] free_unref_page_prepare+0x7d7/0x8f0 mm/page_alloc.c:2366 free_unref_page_list+0xbe/0x860 mm/page_alloc.c:2505 release_pages+0x208a/0x2300 mm/swap.c:1022 __folio_batch_release+0x71/0xe0 mm/swap.c:1042 folio_batch_release include/linux/pagevec.h:83 [inline] shmem_undo_range+0x5ff/0x1a80 mm/shmem.c:1026 shmem_truncate_range mm/shmem.c:1135 [inline] shmem_evict_inode+0x285/0xa70 mm/shmem.c:1264 evict+0x4b7/0x8a0 fs/inode.c:705 __dentry_kill+0x412/0x630 fs/dcache.c:611 dentry_kill+0xb8/0x290 fs/dcache.c:-1 dput+0xfe/0x1e0 fs/dcache.c:918 __fput+0x5b2/0x940 fs/file_table.c:426 task_work_run+0x1d4/0x260 kernel/task_work.c:245 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:305 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f92ff79f397 Code: a2 c7 05 5c 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff9a7acd48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f92ff83448b RCX: 00007f92ff79f397 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff9a7ace00 RBP: 00007fff9a7ace00 R08: 00007fff9a7ade00 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9a7ade90 R13: 00007f92ff83448b R14: 0000000000072db9 R15: 00007fff9a7aded0 ---------------- Code disassembly (best guess): 0: 33 09 xor (%rcx),%ecx 2: 85 c0 test %eax,%eax 4: 0f 84 30 01 00 00 je 0x13a a: 48 85 db test %rbx,%rbx d: 0f 85 4f 01 00 00 jne 0x162 13: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 18: 4c 89 e7 mov %r12,%rdi 1b: e8 53 28 3d 09 call 0x93d2873 20: e8 0e 23 30 00 call 0x302333 25: fb sti 26: 4c 8b 65 b8 mov -0x48(%rbp),%r12 * 2a: 49 8d bc 24 00 16 00 lea 0x1600(%r12),%rdi <-- trapping instruction 31: 00 32: 48 89 f8 mov %rdi,%rax 35: 48 c1 e8 03 shr $0x3,%rax 39: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax 3e: 84 c0 test %al,%al