================================ WARNING: inconsistent lock state syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz.0.59/4525 [HC0[0]:SC1[1]:HE1:SE0] takes: ffff88801fb28648 ((work_completion)(&(&host->detect)->work)){+.?.}-{0:0}, at: __flush_work+0x109/0xac0 kernel/workqueue.c:3072 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5676 process_one_work+0x7ec/0x1160 kernel/workqueue.c:2268 worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 irq event stamp: 7430 hardirqs last enabled at (7430): [] __cancel_work_timer+0x36a/0x560 kernel/workqueue.c:3156 hardirqs last disabled at (7429): [] try_to_grab_pending+0xfa/0x890 kernel/workqueue.c:1267 softirqs last enabled at (4942): [] __do_softirq kernel/softirq.c:630 [inline] softirqs last enabled at (4942): [] invoke_softirq kernel/softirq.c:470 [inline] softirqs last enabled at (4942): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679 softirqs last disabled at (6409): [] __do_softirq kernel/softirq.c:630 [inline] softirqs last disabled at (6409): [] invoke_softirq kernel/softirq.c:470 [inline] softirqs last disabled at (6409): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679 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 *** 2 locks held by syz.0.59/4525: #0: ffff88801746f1d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock include/linux/mmap_lock.h:71 [inline] #0: ffff88801746f1d8 (&mm->mmap_lock){++++}-{3:3}, at: exit_mmap+0x253/0x970 mm/mmap.c:3258 #1: ffffc90000007bc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xcf/0x670 kernel/time/timer.c:1698 stack backtrace: CPU: 0 PID: 4525 Comm: syz.0.59 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106 valid_state+0x13b/0x1d0 kernel/locking/lockdep.c:3974 mark_lock_irq+0xa9/0x900 kernel/locking/lockdep.c:4177 mark_lock+0x208/0x320 kernel/locking/lockdep.c:4633 mark_usage kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0xce0/0x7c40 kernel/locking/lockdep.c:5017 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5676 __flush_work+0x122/0xac0 kernel/workqueue.c:3072 __cancel_work_timer+0x3f4/0x560 kernel/workqueue.c:3163 mmc_free_host+0x15/0x30 drivers/mmc/core/host.c:672 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x56c/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x291/0x910 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:49 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline] RIP: 0010:unwind_next_frame+0x1233/0x1fd0 arch/x86/kernel/unwind_orc.c:448 Code: 00 00 fc ff df 0f b6 04 08 84 c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 f0 48 0f 46 e9 49 8d 47 fc 4c 0f 47 e8 4d 0f 46 e7 <4c> 39 ed 76 a8 e9 ec ef ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 7c RSP: 0018:ffffc90003787250 EFLAGS: 00000287 RAX: ffffffff8e304f58 RBX: ffffc90003787348 RCX: ffffffff8e304f60 RDX: ffffffff8e9fea80 RSI: ffffffff8e304f4c RDI: ffffffff81390b37 RBP: ffffffff8e304f60 R08: 0000000000000009 R09: ffffc90003787348 R10: dffffc0000000000 R11: fffff520006f0e75 R12: ffffffff8e304f5c R13: ffffffff8e304f6c R14: ffffffff81392d70 R15: ffffffff8e304f5c __unwind_start+0x51a/0x650 arch/x86/kernel/unwind_orc.c:717 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xda/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x133/0x1b0 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] kmem_cache_free+0xf7/0x2a0 mm/slub.c:3709 pgtable_pte_page_dtor include/linux/mm.h:2516 [inline] ___pte_free_tlb+0x83/0x2a0 arch/x86/mm/pgtable.c:55 __pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline] free_pte_range mm/memory.c:226 [inline] free_pmd_range mm/memory.c:244 [inline] free_pud_range mm/memory.c:278 [inline] free_p4d_range mm/memory.c:312 [inline] free_pgd_range+0x660/0xb20 mm/memory.c:392 free_pgtables+0x354/0x3d0 mm/memory.c:-1 exit_mmap+0x380/0x970 mm/mmap.c:3260 __mmput+0x118/0x3a0 kernel/fork.c:1210 exit_mm+0x24d/0x350 kernel/exit.c:572 do_exit+0x958/0x2570 kernel/exit.c:874 do_group_exit+0x229/0x2e0 kernel/exit.c:1030 __do_sys_exit_group kernel/exit.c:1041 [inline] __se_sys_exit_group kernel/exit.c:1039 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1039 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f14eed9e159 Code: Unable to access opcode bytes at 0x7f14eed9e12f. RSP: 002b:00007ffda96c1298 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f14eed9e159 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffda96c12fc R08: 0000000000000000 R09: 00000000000927c0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000006 R13: 00000000000927c0 R14: 000000000001736a R15: 00007ffda96c1350 BUG: sleeping function called from invalid context at kernel/workqueue.c:3013 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4525, name: syz.0.59 preempt_count: 101, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. Preemption disabled at: [] unwind_next_frame+0x97/0x1fd0 arch/x86/kernel/unwind_orc.c:433 CPU: 0 PID: 4525 Comm: syz.0.59 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106 __might_resched+0x489/0x5f0 kernel/sched/core.c:9970 start_flush_work kernel/workqueue.c:3013 [inline] __flush_work+0x142/0xac0 kernel/workqueue.c:3075 __cancel_work_timer+0x3f4/0x560 kernel/workqueue.c:3163 mmc_free_host+0x15/0x30 drivers/mmc/core/host.c:672 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x56c/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x291/0x910 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:49 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline] RIP: 0010:unwind_next_frame+0x1233/0x1fd0 arch/x86/kernel/unwind_orc.c:448 Code: 00 00 fc ff df 0f b6 04 08 84 c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 f0 48 0f 46 e9 49 8d 47 fc 4c 0f 47 e8 4d 0f 46 e7 <4c> 39 ed 76 a8 e9 ec ef ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 7c RSP: 0018:ffffc90003787250 EFLAGS: 00000287 RAX: ffffffff8e304f58 RBX: ffffc90003787348 RCX: ffffffff8e304f60 RDX: ffffffff8e9fea80 RSI: ffffffff8e304f4c RDI: ffffffff81390b37 RBP: ffffffff8e304f60 R08: 0000000000000009 R09: ffffc90003787348 R10: dffffc0000000000 R11: fffff520006f0e75 R12: ffffffff8e304f5c R13: ffffffff8e304f6c R14: ffffffff81392d70 R15: ffffffff8e304f5c __unwind_start+0x51a/0x650 arch/x86/kernel/unwind_orc.c:717 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xda/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x133/0x1b0 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] kmem_cache_free+0xf7/0x2a0 mm/slub.c:3709 pgtable_pte_page_dtor include/linux/mm.h:2516 [inline] ___pte_free_tlb+0x83/0x2a0 arch/x86/mm/pgtable.c:55 __pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline] free_pte_range mm/memory.c:226 [inline] free_pmd_range mm/memory.c:244 [inline] free_pud_range mm/memory.c:278 [inline] free_p4d_range mm/memory.c:312 [inline] free_pgd_range+0x660/0xb20 mm/memory.c:392 free_pgtables+0x354/0x3d0 mm/memory.c:-1 exit_mmap+0x380/0x970 mm/mmap.c:3260 __mmput+0x118/0x3a0 kernel/fork.c:1210 exit_mm+0x24d/0x350 kernel/exit.c:572 do_exit+0x958/0x2570 kernel/exit.c:874 do_group_exit+0x229/0x2e0 kernel/exit.c:1030 __do_sys_exit_group kernel/exit.c:1041 [inline] __se_sys_exit_group kernel/exit.c:1039 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1039 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f14eed9e159 Code: Unable to access opcode bytes at 0x7f14eed9e12f. RSP: 002b:00007ffda96c1298 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f14eed9e159 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffda96c12fc R08: 0000000000000000 R09: 00000000000927c0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000006 R13: 00000000000927c0 R14: 000000000001736a R15: 00007ffda96c1350 ODEBUG: object ffffc900000079a0 is NOT on stack ffffc90003780000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4525 at lib/debugobjects.c:558 debug_object_is_on_stack lib/debugobjects.c:-1 [inline] WARNING: CPU: 0 PID: 4525 at lib/debugobjects.c:558 lookup_object_or_alloc lib/debugobjects.c:591 [inline] WARNING: CPU: 0 PID: 4525 at lib/debugobjects.c:558 __debug_object_init+0x18e/0x440 lib/debugobjects.c:672 Modules linked in: CPU: 0 PID: 4525 Comm: syz.0.59 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+0x18e/0x440 lib/debugobjects.c:672 Code: 24 04 74 2f 41 ff c6 44 89 35 9e ed dd 12 48 c7 c1 c0 6c df 8a 48 c7 c7 20 6d df 8a 84 c0 48 0f 45 f9 48 89 de e8 32 bd 0b 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:ffffc90000007908 EFLAGS: 00010046 RAX: 0000000000000050 RBX: ffffc900000079a0 RCX: 1cc55b1238e0d300 RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffc90000007587 R09: 1ffff92000000eb0 R10: dffffc0000000000 R11: fffff52000000eb1 R12: ffff88802db03c20 R13: ffff888057af67e0 R14: 0000000000000001 R15: ffffffff8a8d3120 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556af164e8 CR3: 000000005b3e9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __synchronize_srcu+0x227/0x350 kernel/rcu/srcutree.c:1241 wakeup_source_remove drivers/base/power/wakeup.c:198 [inline] wakeup_source_unregister+0x112/0x190 drivers/base/power/wakeup.c:242 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:681 [inline] kobject_release lib/kobject.c:712 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x217/0x450 lib/kobject.c:729 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x56c/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x291/0x910 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:49 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:178 [inline] RIP: 0010:unwind_next_frame+0x1233/0x1fd0 arch/x86/kernel/unwind_orc.c:448 Code: 00 00 fc ff df 0f b6 04 08 84 c0 75 27 49 63 07 4c 01 f8 49 8d 4f 04 4c 39 f0 48 0f 46 e9 49 8d 47 fc 4c 0f 47 e8 4d 0f 46 e7 <4c> 39 ed 76 a8 e9 ec ef ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 7c RSP: 0018:ffffc90003787250 EFLAGS: 00000287 RAX: ffffffff8e304f58 RBX: ffffc90003787348 RCX: ffffffff8e304f60 RDX: ffffffff8e9fea80 RSI: ffffffff8e304f4c RDI: ffffffff81390b37 RBP: ffffffff8e304f60 R08: 0000000000000009 R09: ffffc90003787348 R10: dffffc0000000000 R11: fffff520006f0e75 R12: ffffffff8e304f5c R13: ffffffff8e304f6c R14: ffffffff81392d70 R15: ffffffff8e304f5c __unwind_start+0x51a/0x650 arch/x86/kernel/unwind_orc.c:717 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xda/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:53 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x126/0x1f0 mm/kasan/common.c:237 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x133/0x1b0 mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] kmem_cache_free+0xf7/0x2a0 mm/slub.c:3709 pgtable_pte_page_dtor include/linux/mm.h:2516 [inline] ___pte_free_tlb+0x83/0x2a0 arch/x86/mm/pgtable.c:55 __pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline] free_pte_range mm/memory.c:226 [inline] free_pmd_range mm/memory.c:244 [inline] free_pud_range mm/memory.c:278 [inline] free_p4d_range mm/memory.c:312 [inline] free_pgd_range+0x660/0xb20 mm/memory.c:392 free_pgtables+0x354/0x3d0 mm/memory.c:-1 exit_mmap+0x380/0x970 mm/mmap.c:3260 __mmput+0x118/0x3a0 kernel/fork.c:1210 exit_mm+0x24d/0x350 kernel/exit.c:572 do_exit+0x958/0x2570 kernel/exit.c:874 do_group_exit+0x229/0x2e0 kernel/exit.c:1030 __do_sys_exit_group kernel/exit.c:1041 [inline] __se_sys_exit_group kernel/exit.c:1039 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1039 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f14eed9e159 Code: Unable to access opcode bytes at 0x7f14eed9e12f. RSP: 002b:00007ffda96c1298 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f14eed9e159 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffda96c12fc R08: 0000000000000000 R09: 00000000000927c0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000006 R13: 00000000000927c0 R14: 000000000001736a R15: 00007ffda96c1350 ---------------- Code disassembly (best guess), 5 bytes skipped: 0: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax 4: 84 c0 test %al,%al 6: 75 27 jne 0x2f 8: 49 63 07 movslq (%r15),%rax b: 4c 01 f8 add %r15,%rax e: 49 8d 4f 04 lea 0x4(%r15),%rcx 12: 4c 39 f0 cmp %r14,%rax 15: 48 0f 46 e9 cmovbe %rcx,%rbp 19: 49 8d 47 fc lea -0x4(%r15),%rax 1d: 4c 0f 47 e8 cmova %rax,%r13 21: 4d 0f 46 e7 cmovbe %r15,%r12 * 25: 4c 39 ed cmp %r13,%rbp <-- trapping instruction 28: 76 a8 jbe 0xffffffd2 2a: e9 ec ef ff ff jmp 0xfffff01b 2f: 44 89 f9 mov %r15d,%ecx 32: 80 e1 07 and $0x7,%cl 35: 80 c1 03 add $0x3,%cl 38: 38 c1 cmp %al,%cl 3a: 7c .byte 0x7c