================================ WARNING: inconsistent lock state syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: ffff88805c840710 ((work_completion)(&(&host->detect)->work)){+.?.}-{0:0} , at: __flush_work+0xfa/0x210 kernel/workqueue.c:3090 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x19f/0x400 kernel/locking/lockdep.c:5737 process_one_work+0x7ba/0xff0 kernel/workqueue.c:2286 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 irq event stamp: 248468 hardirqs last enabled at (248468): [] __cancel_work_timer+0x36a/0x560 kernel/workqueue.c:3174 hardirqs last disabled at (248467): [] try_to_grab_pending+0xfb/0x820 kernel/workqueue.c:1272 softirqs last enabled at (248378): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last enabled at (248378): [] invoke_softirq kernel/softirq.c:450 [inline] softirqs last enabled at (248378): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 softirqs last disabled at (248391): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (248391): [] invoke_softirq kernel/softirq.c:450 [inline] softirqs last disabled at (248391): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock((work_completion)(&(&host->detect)->work)); lock((work_completion)(&(&host->detect)->work)); *** DEADLOCK *** 1 lock held by swapper/1/0: #0: ffffc90000dd0bc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:45 [inline] #0: ffffc90000dd0bc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xca/0x540 kernel/time/timer.c:1638 stack backtrace: CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 valid_state+0x13b/0x1d0 kernel/locking/lockdep.c:3999 mark_lock_irq+0xa9/0x900 kernel/locking/lockdep.c:4202 mark_lock+0x208/0x320 kernel/locking/lockdep.c:4664 mark_usage kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0xd77/0x7d40 kernel/locking/lockdep.c:5074 lock_acquire+0x19f/0x400 kernel/locking/lockdep.c:5737 __flush_work+0x116/0x210 kernel/workqueue.c:3090 __cancel_work_timer+0x3f4/0x560 kernel/workqueue.c:3181 mmc_free_host+0x15/0x30 drivers/mmc/core/host.c:663 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648 expire_timers kernel/time/timer.c:1699 [inline] __run_timers+0x56c/0x810 kernel/time/timer.c:1970 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983 handle_softirqs+0x336/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:730 Code: b7 48 89 df e8 76 fc f2 f7 eb ad e8 6f aa f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 66 90 0f 00 2d f7 61 5a 00 fb f4 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48 RSP: 0018:ffffc90000d67d48 EFLAGS: 000002c2 RAX: da19510ce3a7e400 RBX: ffff88813fe38000 RCX: da19510ce3a7e400 RDX: 0000000000000001 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00 RBP: ffffc90000d67e80 R08: ffff8880b8f3b30b R09: 1ffff110171e7661 R10: dffffc0000000000 R11: ffffed10171e7662 R12: 1ffff920001acfb4 R13: dffffc0000000000 R14: 1ffff11027fc7000 R15: 0000000000000000 default_idle_call+0x81/0xc0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:202 [inline] do_idle+0x3a1/0x650 kernel/sched/idle.c:326 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:424 start_secondary+0x32f/0x430 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xb1/0xbb BUG: sleeping function called from invalid context at kernel/workqueue.c:3031 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/1 INFO: lockdep is turned off. Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 ___might_sleep+0x493/0x610 kernel/sched/core.c:9658 start_flush_work+0x2e/0x830 kernel/workqueue.c:3031 __flush_work+0x148/0x210 kernel/workqueue.c:3093 __cancel_work_timer+0x3f4/0x560 kernel/workqueue.c:3181 mmc_free_host+0x15/0x30 drivers/mmc/core/host.c:663 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648 expire_timers kernel/time/timer.c:1699 [inline] __run_timers+0x56c/0x810 kernel/time/timer.c:1970 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983 handle_softirqs+0x336/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:730 Code: b7 48 89 df e8 76 fc f2 f7 eb ad e8 6f aa f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 66 90 0f 00 2d f7 61 5a 00 fb f4 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48 RSP: 0018:ffffc90000d67d48 EFLAGS: 000002c2 RAX: da19510ce3a7e400 RBX: ffff88813fe38000 RCX: da19510ce3a7e400 RDX: 0000000000000001 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00 RBP: ffffc90000d67e80 R08: ffff8880b8f3b30b R09: 1ffff110171e7661 R10: dffffc0000000000 R11: ffffed10171e7662 R12: 1ffff920001acfb4 R13: dffffc0000000000 R14: 1ffff11027fc7000 R15: 0000000000000000 default_idle_call+0x81/0xc0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:202 [inline] do_idle+0x3a1/0x650 kernel/sched/idle.c:326 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:424 start_secondary+0x32f/0x430 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xb1/0xbb ODEBUG: object ffffc90000dd09a0 is NOT on stack ffffc90000d60000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:561 debug_object_is_on_stack lib/debugobjects.c:-1 [inline] WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:561 lookup_object_or_alloc lib/debugobjects.c:594 [inline] WARNING: CPU: 1 PID: 0 at lib/debugobjects.c:561 __debug_object_init+0x4c0/0xc80 lib/debugobjects.c:621 Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 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:561 [inline] RIP: 0010:lookup_object_or_alloc lib/debugobjects.c:594 [inline] RIP: 0010:__debug_object_init+0x4c0/0xc80 lib/debugobjects.c:621 Code: 16 d2 54 13 48 c7 c1 00 54 7a 8a 48 c7 c7 60 54 7a 8a 84 c0 48 0f 45 f9 4c 89 ee e8 ca ee c9 05 48 be 00 00 00 00 00 fc ff df <0f> 0b e9 4d fd ff ff 83 3d 42 d1 54 13 00 4c 89 6c 24 28 0f 84 23 RSP: 0018:ffffc90000dd07e0 EFLAGS: 00010046 RAX: 0000000000000050 RBX: 0000000000000001 RCX: da19510ce3a7e400 RDX: 0000000000000100 RSI: dffffc0000000000 RDI: 0000000000000000 RBP: ffffc90000dd0950 R08: ffffffff8e6b282f R09: 1ffffffff1cd6505 R10: dffffc0000000000 R11: fffffbfff1cd6506 R12: f8f8f8f8f8f8f8f8 R13: ffffc90000dd09a0 R14: ffff88813fe38020 R15: ffff88802cbe7af0 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe847b28fd0 CR3: 0000000062468000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __synchronize_srcu+0x229/0x350 kernel/rcu/srcutree.c:928 wakeup_source_remove drivers/base/power/wakeup.c:203 [inline] wakeup_source_unregister+0x112/0x190 drivers/base/power/wakeup.c:247 mmc_host_classdev_release+0x43/0xf0 drivers/mmc/core/host.c:77 device_release+0x92/0x1c0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:713 [inline] kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x217/0x450 lib/kobject.c:761 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648 expire_timers kernel/time/timer.c:1699 [inline] __run_timers+0x56c/0x810 kernel/time/timer.c:1970 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983 handle_softirqs+0x336/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:730 Code: b7 48 89 df e8 76 fc f2 f7 eb ad e8 6f aa f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 66 90 0f 00 2d f7 61 5a 00 fb f4 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48 RSP: 0018:ffffc90000d67d48 EFLAGS: 000002c2 RAX: da19510ce3a7e400 RBX: ffff88813fe38000 RCX: da19510ce3a7e400 RDX: 0000000000000001 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00 RBP: ffffc90000d67e80 R08: ffff8880b8f3b30b R09: 1ffff110171e7661 R10: dffffc0000000000 R11: ffffed10171e7662 R12: 1ffff920001acfb4 R13: dffffc0000000000 R14: 1ffff11027fc7000 R15: 0000000000000000 default_idle_call+0x81/0xc0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:202 [inline] do_idle+0x3a1/0x650 kernel/sched/idle.c:326 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:424 start_secondary+0x32f/0x430 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xb1/0xbb ---------------- Code disassembly (best guess): 0: b7 48 mov $0x48,%bh 2: 89 df mov %ebx,%edi 4: e8 76 fc f2 f7 call 0xf7f2fc7f 9: eb ad jmp 0xffffffb8 b: e8 6f aa f6 ff call 0xfff6aa7f 10: 00 00 add %al,(%rax) 12: cc int3 13: cc int3 14: 00 00 add %al,(%rax) 16: cc int3 17: cc int3 18: 00 00 add %al,(%rax) 1a: cc int3 1b: cc int3 1c: 00 00 add %al,(%rax) 1e: cc int3 1f: 66 90 xchg %ax,%ax 21: 0f 00 2d f7 61 5a 00 verw 0x5a61f7(%rip) # 0x5a621f 28: fb sti 29: f4 hlt * 2a: c3 ret <-- trapping instruction 2b: 0f 1f 40 00 nopl 0x0(%rax) 2f: 41 57 push %r15 31: 41 56 push %r14 33: 53 push %rbx 34: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 3b: fc ff df 3e: 65 gs 3f: 48 rex.W