================================ WARNING: inconsistent lock state syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor/4193 [HC0[0]:SC1[1]:HE1:SE0] takes: ffff888078d84710 ((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 __flush_work+0x116/0x210 kernel/workqueue.c:3090 __cancel_work_timer+0x3f4/0x560 kernel/workqueue.c:3181 __mmc_stop_host drivers/mmc/core/core.c:2294 [inline] mmc_stop_host+0xd5/0x460 drivers/mmc/core/core.c:2299 mmc_remove_host+0x11/0x60 drivers/mmc/core/host.c:642 vub300_disconnect+0x14b/0x2e0 drivers/mmc/host/vub300.c:2388 usb_unbind_interface+0x203/0x870 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x487/0x710 drivers/base/dd.c:1282 bus_remove_device+0x2dd/0x400 drivers/base/bus.c:531 device_del+0x63f/0xa80 drivers/base/core.c:3615 usb_disable_device+0x3e7/0x8a0 drivers/usb/core/message.c:1472 usb_disconnect+0x33c/0x8a0 drivers/usb/core/hub.c:2292 hub_port_connect drivers/usb/core/hub.c:5346 [inline] hub_port_connect_change drivers/usb/core/hub.c:5642 [inline] port_event drivers/usb/core/hub.c:5804 [inline] hub_event+0x1d64/0x5260 drivers/usb/core/hub.c:5886 process_one_work+0x867/0xff0 kernel/workqueue.c:2310 process_scheduled_works kernel/workqueue.c:2373 [inline] worker_thread+0xd93/0x12a0 kernel/workqueue.c:2459 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 irq event stamp: 330016 hardirqs last enabled at (330016): [] __cancel_work_timer+0x36a/0x560 kernel/workqueue.c:3174 hardirqs last disabled at (330015): [] try_to_grab_pending+0xfb/0x820 kernel/workqueue.c:1272 softirqs last enabled at (329948): [] do_ip_getsockopt net/ipv4/ip_sockglue.c:1747 [inline] softirqs last enabled at (329948): [] ip_getsockopt+0x61e/0x1660 net/ipv4/ip_sockglue.c:1780 softirqs last disabled at (329951): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (329951): [] invoke_softirq kernel/softirq.c:450 [inline] softirqs last disabled at (329951): [] __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 syz-executor/4193: #0: ffffc90000007bc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:45 [inline] #0: ffffc90000007bc0 ((&vub300->inactivity_timer)){+.-.}-{0:0}, at: call_timer_fn+0xca/0x540 kernel/time/timer.c:1638 stack backtrace: CPU: 0 PID: 4193 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 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:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x13e/0x1c0 kernel/softirq.c:408 Code: 8a e8 16 f1 78 08 65 66 8b 05 ae 61 ba 7e 66 85 c0 75 54 bf 01 00 00 00 e8 df 21 09 00 e8 ca 17 36 00 fb 65 8b 05 5a 38 b9 7e <85> c0 75 05 e8 99 45 b7 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc90002faf800 EFLAGS: 00000286 RAX: 0000000080000000 RBX: 0000000000000201 RCX: 96192d9e0a851000 RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00 RBP: ffffc90002faf890 R08: ffff88807c9abc8b R09: 1ffff1100f935791 R10: dffffc0000000000 R11: ffffed100f935792 R12: ffffffff886801be R13: ffffc90002faf910 R14: dffffc0000000000 R15: 1ffff920005f5f00 do_ip_getsockopt net/ipv4/ip_sockglue.c:1747 [inline] ip_getsockopt+0x61e/0x1660 net/ipv4/ip_sockglue.c:1780 tcp_getsockopt+0x209/0x2530 net/ipv4/tcp.c:4323 __sys_getsockopt+0x1b0/0x230 net/socket.c:2257 __do_sys_getsockopt net/socket.c:2272 [inline] __se_sys_getsockopt net/socket.c:2269 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ffbc1f00d2a Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 d8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7 RSP: 002b:00007ffde12ffcc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffbc2150460 RCX: 00007ffbc1f00d2a RDX: 0000000000000080 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffde12ffcec R09: 0000000000000000 R10: 00007ffde12ffcf0 R11: 0000000000000246 R12: 00007ffde12ffcf0 R13: 00007ffde12ffcec R14: 0000000000000000 R15: 0000000000000000 BUG: sleeping function called from invalid context at kernel/workqueue.c:3031 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4193, name: syz-executor INFO: lockdep is turned off. Preemption disabled at: [] softirq_handle_begin kernel/softirq.c:414 [inline] [] handle_softirqs+0xfd/0x830 kernel/softirq.c:552 CPU: 0 PID: 4193 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 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:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x13e/0x1c0 kernel/softirq.c:408 Code: 8a e8 16 f1 78 08 65 66 8b 05 ae 61 ba 7e 66 85 c0 75 54 bf 01 00 00 00 e8 df 21 09 00 e8 ca 17 36 00 fb 65 8b 05 5a 38 b9 7e <85> c0 75 05 e8 99 45 b7 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc90002faf800 EFLAGS: 00000286 RAX: 0000000080000000 RBX: 0000000000000201 RCX: 96192d9e0a851000 RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00 RBP: ffffc90002faf890 R08: ffff88807c9abc8b R09: 1ffff1100f935791 R10: dffffc0000000000 R11: ffffed100f935792 R12: ffffffff886801be R13: ffffc90002faf910 R14: dffffc0000000000 R15: 1ffff920005f5f00 do_ip_getsockopt net/ipv4/ip_sockglue.c:1747 [inline] ip_getsockopt+0x61e/0x1660 net/ipv4/ip_sockglue.c:1780 tcp_getsockopt+0x209/0x2530 net/ipv4/tcp.c:4323 __sys_getsockopt+0x1b0/0x230 net/socket.c:2257 __do_sys_getsockopt net/socket.c:2272 [inline] __se_sys_getsockopt net/socket.c:2269 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ffbc1f00d2a Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 d8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7 RSP: 002b:00007ffde12ffcc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffbc2150460 RCX: 00007ffbc1f00d2a RDX: 0000000000000080 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffde12ffcec R09: 0000000000000000 R10: 00007ffde12ffcf0 R11: 0000000000000246 R12: 00007ffde12ffcf0 R13: 00007ffde12ffcec R14: 0000000000000000 R15: 0000000000000000 ODEBUG: object ffffc900000079a0 is NOT on stack ffffc90002fa8000, but annotated. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4193 at lib/debugobjects.c:561 debug_object_is_on_stack lib/debugobjects.c:-1 [inline] WARNING: CPU: 0 PID: 4193 at lib/debugobjects.c:561 lookup_object_or_alloc lib/debugobjects.c:594 [inline] WARNING: CPU: 0 PID: 4193 at lib/debugobjects.c:561 __debug_object_init+0x4c0/0xc80 lib/debugobjects.c:621 Modules linked in: CPU: 0 PID: 4193 Comm: syz-executor Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 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:ffffc900000077e0 EFLAGS: 00010046 RAX: 0000000000000050 RBX: 0000000000000001 RCX: 96192d9e0a851000 RDX: 0000000000000100 RSI: dffffc0000000000 RDI: 0000000000000000 RBP: ffffc90000007950 R08: ffffc90000007307 R09: 1ffff92000000e60 R10: dffffc0000000000 R11: fffff52000000e61 R12: ffff888023c02c90 R13: ffffc900000079a0 R14: ffff888079ff1de0 R15: ffff888074558a80 FS: 00005555719b9500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555719dca78 CR3: 00000000637db000 CR4: 00000000003506f0 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:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x13e/0x1c0 kernel/softirq.c:408 Code: 8a e8 16 f1 78 08 65 66 8b 05 ae 61 ba 7e 66 85 c0 75 54 bf 01 00 00 00 e8 df 21 09 00 e8 ca 17 36 00 fb 65 8b 05 5a 38 b9 7e <85> c0 75 05 e8 99 45 b7 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc90002faf800 EFLAGS: 00000286 RAX: 0000000080000000 RBX: 0000000000000201 RCX: 96192d9e0a851000 RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4c00 RBP: ffffc90002faf890 R08: ffff88807c9abc8b R09: 1ffff1100f935791 R10: dffffc0000000000 R11: ffffed100f935792 R12: ffffffff886801be R13: ffffc90002faf910 R14: dffffc0000000000 R15: 1ffff920005f5f00 do_ip_getsockopt net/ipv4/ip_sockglue.c:1747 [inline] ip_getsockopt+0x61e/0x1660 net/ipv4/ip_sockglue.c:1780 tcp_getsockopt+0x209/0x2530 net/ipv4/tcp.c:4323 __sys_getsockopt+0x1b0/0x230 net/socket.c:2257 __do_sys_getsockopt net/socket.c:2272 [inline] __se_sys_getsockopt net/socket.c:2269 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2269 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ffbc1f00d2a Code: 48 83 ec 10 89 d2 48 63 ff 45 31 c9 6a 2a 45 31 c0 31 c9 e8 d8 99 fb ff 48 83 c4 18 c3 0f 1f 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 e8 ff ff ff f7 RSP: 002b:00007ffde12ffcc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffbc2150460 RCX: 00007ffbc1f00d2a RDX: 0000000000000080 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffde12ffcec R09: 0000000000000000 R10: 00007ffde12ffcf0 R11: 0000000000000246 R12: 00007ffde12ffcf0 R13: 00007ffde12ffcec R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 16 f1 78 08 call 0x878f11b 5: 65 66 8b 05 ae 61 ba mov %gs:0x7eba61ae(%rip),%ax # 0x7eba61bb c: 7e d: 66 85 c0 test %ax,%ax 10: 75 54 jne 0x66 12: bf 01 00 00 00 mov $0x1,%edi 17: e8 df 21 09 00 call 0x921fb 1c: e8 ca 17 36 00 call 0x3617eb 21: fb sti 22: 65 8b 05 5a 38 b9 7e mov %gs:0x7eb9385a(%rip),%eax # 0x7eb93883 * 29: 85 c0 test %eax,%eax <-- trapping instruction 2b: 75 05 jne 0x32 2d: e8 99 45 b7 ff call 0xffb745cb 32: 48 c7 04 24 0e 36 e0 movq $0x45e0360e,(%rsp) 39: 45 3a: 4b rex.WXB 3b: c7 .byte 0xc7 3c: 04 37 add $0x37,%al