============================= WARNING: suspicious RCU usage syzkaller #0 Tainted: G L ----------------------------- kernel/sched/core.c:9226 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-executor/23901: 7, last CPU#0: #0: ffff88807424f588 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310 #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_fault_around mm/memory.c:5957 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_read_fault mm/memory.c:5991 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_fault mm/memory.c:6134 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_pte_missing+0x140c/0x34b0 mm/memory.c:4700 #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: filemap_map_pages+0x1d1/0x2170 mm/filemap.c:3921 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290 #4: ffff8880768c0018 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline] #4: ffff8880768c0018 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404 #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2276 #6: ffffc90000007cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745 stack backtrace: CPU: 0 UID: 0 PID: 23901 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6972 __might_resched+0xbb/0x4c0 kernel/sched/core.c:9226 __cancel_work_sync+0x6d/0x110 kernel/workqueue.c:4561 mmc_free_host+0x19/0x40 drivers/mmc/core/host.c:700 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x237/0x350 kernel/locking/lockdep.c:5947 Code: 5d 43 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 32 38 f2 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 0f 62 46 0a cc 48 8d 3d 77 55 da 0e 67 48 0f b9 RSP: 0000:ffffc900032877e0 EFLAGS: 00000282 RAX: 487769af75d10000 RBX: ffffffff8243e9ea RCX: 8000000000000002 RDX: 0000000086a99685 RSI: ffffffff8e69f517 RDI: ffffffff8c6dad80 RBP: ffff88803dae0000 R08: ffffffff8243e9ea R09: 0000000000000000 R10: dffffc0000000000 R11: fffff940003a6539 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] pfn_valid+0xd6/0x490 include/linux/mmzone.h:2276 page_table_check_set+0x25/0x530 mm/page_table_check.c:105 page_table_check_ptes_set include/linux/page_table_check.h:83 [inline] set_ptes include/linux/pgtable.h:447 [inline] set_pte_range+0x7ef/0x840 mm/memory.c:5728 filemap_map_order0_folio mm/filemap.c:3889 [inline] filemap_map_pages+0xe67/0x2170 mm/filemap.c:3960 do_fault_around mm/memory.c:5958 [inline] do_read_fault mm/memory.c:5991 [inline] do_fault mm/memory.c:6134 [inline] do_pte_missing+0x20ae/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0033:0x7f8a2f3aedc0 Code: Unable to access opcode bytes at 0x7f8a2f3aed96. RSP: 002b:00007f8a2f74f6d8 EFLAGS: 00010202 RAX: 00007f8a2f435f18 RBX: 00007f8a2f74fc10 RCX: 0000000000000000 RDX: 0000000000000016 RSI: 00007f8a2f435f02 RDI: 00007f8a2f74fc10 RBP: 00007f8a2f435f18 R08: 00007f8a2f74fe80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000024b R13: 0000000000000000 R14: 00007f8a2f435f02 R15: 00007f8a2f74fcd0 BUG: sleeping function called from invalid context at kernel/workqueue.c:4561 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 23901, name: syz-executor preempt_count: 102, expected: 0 RCU nest depth: 3, expected: 0 locks held by syz-executor/23901: 7, last CPU#0: #0: ffff88807424f588 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310 #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_fault_around mm/memory.c:5957 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_read_fault mm/memory.c:5991 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_fault mm/memory.c:6134 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_pte_missing+0x140c/0x34b0 mm/memory.c:4700 #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: filemap_map_pages+0x1d1/0x2170 mm/filemap.c:3921 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290 #4: ffff8880768c0018 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline] #4: ffff8880768c0018 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404 #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2276 #6: ffffc90000007cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 UID: 0 PID: 23901 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x36a/0x4c0 kernel/sched/core.c:9264 __cancel_work_sync+0x6d/0x110 kernel/workqueue.c:4561 mmc_free_host+0x19/0x40 drivers/mmc/core/host.c:700 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x237/0x350 kernel/locking/lockdep.c:5947 Code: 5d 43 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 32 38 f2 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 0f 62 46 0a cc 48 8d 3d 77 55 da 0e 67 48 0f b9 RSP: 0000:ffffc900032877e0 EFLAGS: 00000282 RAX: 487769af75d10000 RBX: ffffffff8243e9ea RCX: 8000000000000002 RDX: 0000000086a99685 RSI: ffffffff8e69f517 RDI: ffffffff8c6dad80 RBP: ffff88803dae0000 R08: ffffffff8243e9ea R09: 0000000000000000 R10: dffffc0000000000 R11: fffff940003a6539 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] pfn_valid+0xd6/0x490 include/linux/mmzone.h:2276 page_table_check_set+0x25/0x530 mm/page_table_check.c:105 page_table_check_ptes_set include/linux/page_table_check.h:83 [inline] set_ptes include/linux/pgtable.h:447 [inline] set_pte_range+0x7ef/0x840 mm/memory.c:5728 filemap_map_order0_folio mm/filemap.c:3889 [inline] filemap_map_pages+0xe67/0x2170 mm/filemap.c:3960 do_fault_around mm/memory.c:5958 [inline] do_read_fault mm/memory.c:5991 [inline] do_fault mm/memory.c:6134 [inline] do_pte_missing+0x20ae/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0033:0x7f8a2f3aedc0 Code: Unable to access opcode bytes at 0x7f8a2f3aed96. RSP: 002b:00007f8a2f74f6d8 EFLAGS: 00010202 RAX: 00007f8a2f435f18 RBX: 00007f8a2f74fc10 RCX: 0000000000000000 RDX: 0000000000000016 RSI: 00007f8a2f435f02 RDI: 00007f8a2f74fc10 RBP: 00007f8a2f435f18 R08: 00007f8a2f74fe80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000024b R13: 0000000000000000 R14: 00007f8a2f435f02 R15: 00007f8a2f74fcd0 ================================ WARNING: inconsistent lock state syzkaller #0 Tainted: G W L -------------------------------- inconsistent {SOFTIRQ-ON-R} -> {IN-SOFTIRQ-W} usage. syz-executor/23901 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff8f817d98 (wakeup_srcu){.+-+}-{0:0}, at: srcu_lock_sync include/linux/srcu.h:210 [inline] ffffffff8f817d98 (wakeup_srcu){.+-+}-{0:0}, at: __synchronize_srcu+0xb5/0x2f0 kernel/rcu/srcutree.c:1462 {SOFTIRQ-ON-R} state was registered at: lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942 srcu_lock_acquire include/linux/srcu.h:198 [inline] srcu_read_lock include/linux/srcu.h:305 [inline] pm_print_active_wakeup_sources+0x60/0x370 drivers/base/power/wakeup.c:843 wakeup_count_store+0xcc/0x120 kernel/power/main.c:893 kernfs_fop_write_iter+0x3a4/0x540 fs/kernfs/file.c:345 aio_write+0x5d0/0x870 fs/aio.c:1687 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x798/0x13d0 fs/aio.c:2106 __do_sys_io_submit fs/aio.c:2165 [inline] __se_sys_io_submit+0x195/0x340 fs/aio.c:2135 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f irq event stamp: 614 hardirqs last enabled at (614): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline] hardirqs last enabled at (614): [] _raw_spin_unlock_irqrestore+0x30/0x80 kernel/locking/spinlock.c:221 hardirqs last disabled at (613): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:153 [inline] hardirqs last disabled at (613): [] _raw_spin_lock_irqsave+0x1a/0x60 kernel/locking/spinlock.c:181 softirqs last enabled at (0): [] rcu_lock_acquire include/linux/rcupdate.h:309 [inline] softirqs last enabled at (0): [] rcu_read_lock include/linux/rcupdate.h:849 [inline] softirqs last enabled at (0): [] copy_process+0xd16/0x4400 kernel/fork.c:2180 softirqs last disabled at (169): [] __do_softirq kernel/softirq.c:679 [inline] softirqs last disabled at (169): [] invoke_softirq kernel/softirq.c:519 [inline] softirqs last disabled at (169): [] __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(wakeup_srcu); lock(wakeup_srcu); *** DEADLOCK *** locks held by syz-executor/23901: 7, last CPU#0: #0: ffff88807424f588 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310 #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_fault_around mm/memory.c:5957 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_read_fault mm/memory.c:5991 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_fault mm/memory.c:6134 [inline] #1: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: do_pte_missing+0x140c/0x34b0 mm/memory.c:4700 #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: filemap_map_pages+0x1d1/0x2170 mm/filemap.c:3921 #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290 #4: ffff8880768c0018 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline] #4: ffff8880768c0018 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404 #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline] #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] #5: ffffffff8ed5c960 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x490 include/linux/mmzone.h:2276 #6: ffffc90000007cc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x5f0 kernel/time/timer.c:1745 stack backtrace: CPU: 0 UID: 0 PID: 23901 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_usage_bug+0x28c/0x2e0 kernel/locking/lockdep.c:4086 valid_state+0xbe/0xf0 kernel/locking/lockdep.c:4100 mark_lock_irq+0x58/0x380 kernel/locking/lockdep.c:4317 mark_lock+0x117/0x190 kernel/locking/lockdep.c:4797 mark_usage kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0x71e/0x2de0 kernel/locking/lockdep.c:5242 lock_sync+0xb3/0x130 kernel/locking/lockdep.c:5991 srcu_lock_sync include/linux/srcu.h:210 [inline] __synchronize_srcu+0xc9/0x2f0 kernel/rcu/srcutree.c:1462 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline] wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69 device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x237/0x350 kernel/locking/lockdep.c:5947 Code: 5d 43 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 32 38 f2 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 0f 62 46 0a cc 48 8d 3d 77 55 da 0e 67 48 0f b9 RSP: 0000:ffffc900032877e0 EFLAGS: 00000282 RAX: 487769af75d10000 RBX: ffffffff8243e9ea RCX: 8000000000000002 RDX: 0000000086a99685 RSI: ffffffff8e69f517 RDI: ffffffff8c6dad80 RBP: ffff88803dae0000 R08: ffffffff8243e9ea R09: 0000000000000000 R10: dffffc0000000000 R11: fffff940003a6539 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] pfn_valid+0xd6/0x490 include/linux/mmzone.h:2276 page_table_check_set+0x25/0x530 mm/page_table_check.c:105 page_table_check_ptes_set include/linux/page_table_check.h:83 [inline] set_ptes include/linux/pgtable.h:447 [inline] set_pte_range+0x7ef/0x840 mm/memory.c:5728 filemap_map_order0_folio mm/filemap.c:3889 [inline] filemap_map_pages+0xe67/0x2170 mm/filemap.c:3960 do_fault_around mm/memory.c:5958 [inline] do_read_fault mm/memory.c:5991 [inline] do_fault mm/memory.c:6134 [inline] do_pte_missing+0x20ae/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0033:0x7f8a2f3aedc0 Code: Unable to access opcode bytes at 0x7f8a2f3aed96. RSP: 002b:00007f8a2f74f6d8 EFLAGS: 00010202 RAX: 00007f8a2f435f18 RBX: 00007f8a2f74fc10 RCX: 0000000000000000 RDX: 0000000000000016 RSI: 00007f8a2f435f02 RDI: 00007f8a2f74fc10 RBP: 00007f8a2f435f18 R08: 00007f8a2f74fe80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000024b R13: 0000000000000000 R14: 00007f8a2f435f02 R15: 00007f8a2f74fcd0 BUG: sleeping function called from invalid context at kernel/rcu/srcutree.c:1472 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 23901, name: syz-executor preempt_count: 102, expected: 0 RCU nest depth: 3, expected: 0 INFO: lockdep is turned off. Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 UID: 0 PID: 23901 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x36a/0x4c0 kernel/sched/core.c:9264 __synchronize_srcu+0x1a1/0x2f0 kernel/rcu/srcutree.c:1472 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline] wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69 device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x237/0x350 kernel/locking/lockdep.c:5947 Code: 5d 43 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 32 38 f2 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 0f 62 46 0a cc 48 8d 3d 77 55 da 0e 67 48 0f b9 RSP: 0000:ffffc900032877e0 EFLAGS: 00000282 RAX: 487769af75d10000 RBX: ffffffff8243e9ea RCX: 8000000000000002 RDX: 0000000086a99685 RSI: ffffffff8e69f517 RDI: ffffffff8c6dad80 RBP: ffff88803dae0000 R08: ffffffff8243e9ea R09: 0000000000000000 R10: dffffc0000000000 R11: fffff940003a6539 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] pfn_valid+0xd6/0x490 include/linux/mmzone.h:2276 page_table_check_set+0x25/0x530 mm/page_table_check.c:105 page_table_check_ptes_set include/linux/page_table_check.h:83 [inline] set_ptes include/linux/pgtable.h:447 [inline] set_pte_range+0x7ef/0x840 mm/memory.c:5728 filemap_map_order0_folio mm/filemap.c:3889 [inline] filemap_map_pages+0xe67/0x2170 mm/filemap.c:3960 do_fault_around mm/memory.c:5958 [inline] do_read_fault mm/memory.c:5991 [inline] do_fault mm/memory.c:6134 [inline] do_pte_missing+0x20ae/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0033:0x7f8a2f3aedc0 Code: Unable to access opcode bytes at 0x7f8a2f3aed96. RSP: 002b:00007f8a2f74f6d8 EFLAGS: 00010202 RAX: 00007f8a2f435f18 RBX: 00007f8a2f74fc10 RCX: 0000000000000000 RDX: 0000000000000016 RSI: 00007f8a2f435f02 RDI: 00007f8a2f74fc10 RBP: 00007f8a2f435f18 R08: 00007f8a2f74fe80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000024b R13: 0000000000000000 R14: 00007f8a2f435f02 R15: 00007f8a2f74fcd0 ODEBUG: object ffffc90000007a80 is NOT on stack ffffc90003280000, but annotated. ------------[ cut here ]------------ 1 WARNING: lib/debugobjects.c:672 at debug_object_is_on_stack lib/debugobjects.c:672 [inline], CPU#0: syz-executor/23901 WARNING: lib/debugobjects.c:672 at lookup_object_or_alloc lib/debugobjects.c:705 [inline], CPU#0: syz-executor/23901 WARNING: lib/debugobjects.c:672 at __debug_object_init+0x2c4/0x3c0 lib/debugobjects.c:798, CPU#0: syz-executor/23901 Modules linked in: CPU: 0 UID: 0 PID: 23901 Comm: syz-executor Tainted: G W L syzkaller #0 PREEMPT(full) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:debug_object_is_on_stack lib/debugobjects.c:672 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:705 [inline] RIP: 0010:__debug_object_init+0x2c4/0x3c0 lib/debugobjects.c:798 Code: fe 06 cc 41 ff c7 44 89 3d 29 30 e8 15 48 c7 c1 80 b6 6d 8c 48 c7 c7 e0 b6 6d 8c 84 c0 48 0f 45 f9 48 89 de e8 6d a2 3c fc 90 <0f> 0b 90 e9 c0 fe ff ff e8 4f 1c 00 00 8b 05 81 ab 6d 0a 3b 05 7f RSP: 0000:ffffc900000079b8 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc90000007a80 RCX: 487769af75d10000 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff88803dae0020 R08: 0000000000000100 R09: 1ffffffff1ed22f4 R10: dffffc0000000000 R11: fffffbfff1ed22f5 R12: ffff888140aa30f8 R13: ffff888071b68070 R14: dffffc0000000000 R15: 0000000000000001 FS: 000055557c2d1500(0000) GS:ffff888124cc8000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a2f3aed96 CR3: 000000004ca5e000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: __synchronize_srcu+0x1d5/0x2f0 kernel/rcu/srcutree.c:1475 wakeup_source_remove drivers/base/power/wakeup.c:201 [inline] wakeup_source_unregister+0x129/0x3f0 drivers/base/power/wakeup.c:237 mmc_host_classdev_release+0x47/0x100 drivers/mmc/core/host.c:69 device_release+0xc4/0x1f0 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+0x222/0x550 lib/kobject.c:737 call_timer_fn+0x18d/0x5f0 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x652/0x8b0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2405 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:lock_acquire+0x237/0x350 kernel/locking/lockdep.c:5947 Code: 5d 43 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 32 38 f2 11 48 3b 44 24 50 75 33 fb 48 83 c4 58 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 0f 62 46 0a cc 48 8d 3d 77 55 da 0e 67 48 0f b9 RSP: 0000:ffffc900032877e0 EFLAGS: 00000282 RAX: 487769af75d10000 RBX: ffffffff8243e9ea RCX: 8000000000000002 RDX: 0000000086a99685 RSI: ffffffff8e69f517 RDI: ffffffff8c6dad80 RBP: ffff88803dae0000 R08: ffffffff8243e9ea R09: 0000000000000000 R10: dffffc0000000000 R11: fffff940003a6539 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock_sched include/linux/rcupdate.h:947 [inline] pfn_valid+0xd6/0x490 include/linux/mmzone.h:2276 page_table_check_set+0x25/0x530 mm/page_table_check.c:105 page_table_check_ptes_set include/linux/page_table_check.h:83 [inline] set_ptes include/linux/pgtable.h:447 [inline] set_pte_range+0x7ef/0x840 mm/memory.c:5728 filemap_map_order0_folio mm/filemap.c:3889 [inline] filemap_map_pages+0xe67/0x2170 mm/filemap.c:3960 do_fault_around mm/memory.c:5958 [inline] do_read_fault mm/memory.c:5991 [inline] do_fault mm/memory.c:6134 [inline] do_pte_missing+0x20ae/0x34b0 mm/memory.c:4700 handle_pte_fault mm/memory.c:6558 [inline] __handle_mm_fault mm/memory.c:6707 [inline] handle_mm_fault+0x1a53/0x3750 mm/memory.c:6876 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0033:0x7f8a2f3aedc0 Code: Unable to access opcode bytes at 0x7f8a2f3aed96. RSP: 002b:00007f8a2f74f6d8 EFLAGS: 00010202 RAX: 00007f8a2f435f18 RBX: 00007f8a2f74fc10 RCX: 0000000000000000 RDX: 0000000000000016 RSI: 00007f8a2f435f02 RDI: 00007f8a2f74fc10 RBP: 00007f8a2f435f18 R08: 00007f8a2f74fe80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000024b R13: 0000000000000000 R14: 00007f8a2f435f02 R15: 00007f8a2f74fcd0 ---------------- Code disassembly (best guess): 0: 5d pop %rbp 1: 43 0a f7 rex.XB or %r15b,%sil 4: 44 24 10 rex.R and $0x10,%al 7: 00 02 add %al,(%rdx) 9: 00 00 add %al,(%rax) b: 0f 84 38 ff ff ff je 0xffffff49 11: 65 48 8b 05 32 38 f2 mov %gs:0x11f23832(%rip),%rax # 0x11f2384b 18: 11 19: 48 3b 44 24 50 cmp 0x50(%rsp),%rax 1e: 75 33 jne 0x53 20: fb sti 21: 48 83 c4 58 add $0x58,%rsp 25: 5b pop %rbx 26: 41 5c pop %r12 28: 41 5d pop %r13 * 2a: 41 5e pop %r14 <-- trapping instruction 2c: 41 5f pop %r15 2e: 5d pop %rbp 2f: e9 0f 62 46 0a jmp 0xa466243 34: cc int3 35: 48 8d 3d 77 55 da 0e lea 0xeda5577(%rip),%rdi # 0xeda55b3 3c: 67 addr32 3d: 48 rex.W 3e: 0f .byte 0xf 3f: b9 .byte 0xb9