===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 4.19.53+ #25 Not tainted ----------------------------------------------------- syz-executor.0/24144 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: 000000003bd89f0f (&ctx->fault_pending_wqh){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] 000000003bd89f0f (&ctx->fault_pending_wqh){+.+.}, at: userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] 000000003bd89f0f (&ctx->fault_pending_wqh){+.+.}, at: userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 and this task is already holding: 0000000061858510 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] 0000000061858510 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read fs/userfaultfd.c:1042 [inline] 0000000061858510 (&ctx->fd_wqh){....}, at: userfaultfd_read+0x262/0x18c0 fs/userfaultfd.c:1204 which would create a new lock dependency: (&ctx->fd_wqh){....} -> (&ctx->fault_pending_wqh){+.+.} but this new dependency connects a SOFTIRQ-irq-safe lock: (&(&ctx->ctx_lock)->rlock){..-.} ... which became SOFTIRQ-irq-safe at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 debug_lockdep_rcu_enabled.part.0+0x2a/0x60 kernel/rcu/update.c:254 debug_lockdep_rcu_enabled+0x71/0xa0 kernel/rcu/update.c:253 rcu_read_lock+0x2e/0x70 include/linux/rcupdate.h:628 lock_page_memcg+0x19/0x1d0 mm/memcontrol.c:1887 page_remove_file_rmap mm/rmap.c:1215 [inline] page_remove_rmap+0x53d/0x12c0 mm/rmap.c:1300 zap_pte_range mm/memory.c:1338 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xd80/0x1e20 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3097 __mmput kernel/fork.c:1010 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1031 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 get_signal+0x3ec/0x1fc0 kernel/signal.c:2574 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe to a SOFTIRQ-irq-unsafe lock: (&ctx->fault_pending_wqh){+.+.} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] handle_userfault+0x58a/0x18b0 fs/userfaultfd.c:462 __do_huge_pmd_anonymous_page mm/huge_memory.c:593 [inline] do_huge_pmd_anonymous_page+0x9a4/0x14e0 mm/huge_memory.c:725 create_huge_pmd mm/memory.c:3932 [inline] __handle_mm_fault+0x2c80/0x3f80 mm/memory.c:4136 handle_mm_fault+0x43f/0xb30 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1393 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1468 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1181 copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66 copy_to_user include/linux/uaccess.h:155 [inline] perf_read_one kernel/events/core.c:4803 [inline] __perf_read kernel/events/core.c:4846 [inline] perf_read+0x638/0x900 kernel/events/core.c:4859 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ctx->fault_pending_wqh); local_irq_disable(); lock(&(&ctx->ctx_lock)->rlock); lock(&ctx->fd_wqh); lock(&(&ctx->ctx_lock)->rlock); *** DEADLOCK *** 1 lock held by syz-executor.0/24144: #0: 0000000061858510 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] #0: 0000000061858510 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read fs/userfaultfd.c:1042 [inline] #0: 0000000061858510 (&ctx->fd_wqh){....}, at: userfaultfd_read+0x262/0x18c0 fs/userfaultfd.c:1204 the dependencies between SOFTIRQ-irq-safe lock and the holding lock: -> (&(&ctx->ctx_lock)->rlock){..-.} ops: 94 { IN-SOFTIRQ-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 debug_lockdep_rcu_enabled.part.0+0x2a/0x60 kernel/rcu/update.c:254 debug_lockdep_rcu_enabled+0x71/0xa0 kernel/rcu/update.c:253 rcu_read_lock+0x2e/0x70 include/linux/rcupdate.h:628 lock_page_memcg+0x19/0x1d0 mm/memcontrol.c:1887 page_remove_file_rmap mm/rmap.c:1215 [inline] page_remove_rmap+0x53d/0x12c0 mm/rmap.c:1300 zap_pte_range mm/memory.c:1338 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xd80/0x1e20 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3097 __mmput kernel/fork.c:1010 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1031 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 get_signal+0x3ec/0x1fc0 kernel/signal.c:2574 net_ratelimit: 2 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 protocol 88fb is buggy, dev hsr_slave_1 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0x2d/0x490 fs/aio.c:614 percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline] percpu_ref_put include/linux/percpu-refcount.h:300 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:236 [inline] rcu_do_batch kernel/rcu/tree.c:2584 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline] rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881 __do_softirq+0x25c/0x921 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 debug_lockdep_rcu_enabled.part.0+0x2a/0x60 kernel/rcu/update.c:254 debug_lockdep_rcu_enabled+0x71/0xa0 kernel/rcu/update.c:253 rcu_read_lock+0x2e/0x70 include/linux/rcupdate.h:628 lock_page_memcg+0x19/0x1d0 mm/memcontrol.c:1887 page_remove_file_rmap mm/rmap.c:1215 [inline] page_remove_rmap+0x53d/0x12c0 mm/rmap.c:1300 zap_pte_range mm/memory.c:1338 [inline] zap_pmd_range mm/memory.c:1440 [inline] zap_pud_range mm/memory.c:1469 [inline] zap_p4d_range mm/memory.c:1490 [inline] unmap_page_range+0xd80/0x1e20 mm/memory.c:1511 unmap_single_vma+0x19d/0x300 mm/memory.c:1556 unmap_vmas+0xae/0x180 mm/memory.c:1586 exit_mmap+0x2c2/0x530 mm/mmap.c:3097 __mmput kernel/fork.c:1010 [inline] mmput+0x15f/0x4c0 kernel/fork.c:1031 exit_mm kernel/exit.c:546 [inline] do_exit+0x838/0x2fa0 kernel/exit.c:863 do_group_exit+0x135/0x370 kernel/exit.c:979 get_signal+0x3ec/0x1fc0 kernel/signal.c:2574 do_signal+0x95/0x1960 arch/x86/kernel/signal.c:821 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.50193+0x0/0x40 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] aio_poll fs/aio.c:1741 [inline] __io_submit_one fs/aio.c:1849 [inline] io_submit_one+0xef2/0x2eb0 fs/aio.c:1885 __do_sys_io_submit fs/aio.c:1929 [inline] __se_sys_io_submit fs/aio.c:1900 [inline] __x64_sys_io_submit+0x1aa/0x520 fs/aio.c:1900 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> (&ctx->fd_wqh){....} ops: 65 { INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 __wake_up_common_lock+0xc7/0x190 kernel/sched/wait.c:120 __wake_up+0xe/0x10 kernel/sched/wait.c:145 handle_userfault+0x921/0x18b0 fs/userfaultfd.c:488 __do_huge_pmd_anonymous_page mm/huge_memory.c:593 [inline] do_huge_pmd_anonymous_page+0x9a4/0x14e0 mm/huge_memory.c:725 create_huge_pmd mm/memory.c:3932 [inline] __handle_mm_fault+0x2c80/0x3f80 mm/memory.c:4136 handle_mm_fault+0x43f/0xb30 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1393 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1468 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1181 copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66 copy_to_user include/linux/uaccess.h:155 [inline] perf_read_one kernel/events/core.c:4803 [inline] __perf_read kernel/events/core.c:4846 [inline] perf_read+0x638/0x900 kernel/events/core.c:4859 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.43730+0x0/0x40 ... acquired at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: -> (&ctx->fault_pending_wqh){+.+.} ops: 62 { HARDIRQ-ON-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] handle_userfault+0x58a/0x18b0 fs/userfaultfd.c:462 __do_huge_pmd_anonymous_page mm/huge_memory.c:593 [inline] do_huge_pmd_anonymous_page+0x9a4/0x14e0 mm/huge_memory.c:725 create_huge_pmd mm/memory.c:3932 [inline] __handle_mm_fault+0x2c80/0x3f80 mm/memory.c:4136 handle_mm_fault+0x43f/0xb30 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1393 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1468 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1181 copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66 copy_to_user include/linux/uaccess.h:155 [inline] perf_read_one kernel/events/core.c:4803 [inline] __perf_read kernel/events/core.c:4846 [inline] perf_read+0x638/0x900 kernel/events/core.c:4859 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe SOFTIRQ-ON-W at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] handle_userfault+0x58a/0x18b0 fs/userfaultfd.c:462 __do_huge_pmd_anonymous_page mm/huge_memory.c:593 [inline] do_huge_pmd_anonymous_page+0x9a4/0x14e0 mm/huge_memory.c:725 create_huge_pmd mm/memory.c:3932 [inline] __handle_mm_fault+0x2c80/0x3f80 mm/memory.c:4136 handle_mm_fault+0x43f/0xb30 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1393 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1468 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1181 copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66 copy_to_user include/linux/uaccess.h:155 [inline] perf_read_one kernel/events/core.c:4803 [inline] __perf_read kernel/events/core.c:4846 [inline] perf_read+0x638/0x900 kernel/events/core.c:4859 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] handle_userfault+0x58a/0x18b0 fs/userfaultfd.c:462 __do_huge_pmd_anonymous_page mm/huge_memory.c:593 [inline] do_huge_pmd_anonymous_page+0x9a4/0x14e0 mm/huge_memory.c:725 create_huge_pmd mm/memory.c:3932 [inline] __handle_mm_fault+0x2c80/0x3f80 mm/memory.c:4136 handle_mm_fault+0x43f/0xb30 mm/memory.c:4202 __do_page_fault+0x62a/0xe90 arch/x86/mm/fault.c:1393 do_page_fault+0x71/0x57d arch/x86/mm/fault.c:1468 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1181 copy_user_generic_unrolled+0x89/0xc0 arch/x86/lib/copy_user_64.S:66 copy_to_user include/linux/uaccess.h:155 [inline] perf_read_one kernel/events/core.c:4803 [inline] __perf_read kernel/events/core.c:4846 [inline] perf_read+0x638/0x900 kernel/events/core.c:4859 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.43727+0x0/0x40 ... acquired at: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe stack backtrace: CPU: 1 PID: 24144 Comm: syz-executor.0 Not tainted 4.19.53+ #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 print_bad_irq_dependency kernel/locking/lockdep.c:1568 [inline] check_usage.cold+0x611/0x946 kernel/locking/lockdep.c:1600 check_irq_usage kernel/locking/lockdep.c:1656 [inline] check_prev_add_irq kernel/locking/lockdep_states.h:8 [inline] check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x1ee4/0x48f0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline] userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204 __vfs_read+0x114/0x800 fs/read_write.c:416 vfs_read+0x194/0x3d0 fs/read_write.c:452 ksys_read+0x14f/0x2d0 fs/read_write.c:579 __do_sys_read fs/read_write.c:589 [inline] __se_sys_read fs/read_write.c:587 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:587 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0039945c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000080 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f00399466d4 R13: 00000000004c53aa R14: 00000000004db138 R15: 00000000ffffffff protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'kvm' (000000004208a820): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (000000004208a820): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (000000004208a820): kobject_uevent_env kobject: 'kvm' (000000004208a820): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (000000004208a820): kobject_uevent_env kobject: 'kvm' (000000004208a820): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (000000004208a820): kobject_uevent_env kobject: 'kvm' (000000004208a820): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (000000004208a820): kobject_uevent_env kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (000000004208a820): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (000000004208a820): kobject_uevent_env kobject: 'kvm' (000000004208a820): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'input16' (000000009069cddd): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'input16' (000000009069cddd): kobject_uevent_env kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'input16' (000000009069cddd): fill_kobj_path: path = '/devices/virtual/input/input16' kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'input16' (000000009069cddd): fill_kobj_path: path = '/devices/virtual/input/input16' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env input: syz0 as /devices/virtual/input/input16 kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'event4' (000000002b97591c): kobject_add_internal: parent: 'input16', set: 'devices' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'event4' (000000002b97591c): kobject_uevent_env kobject: 'event4' (000000002b97591c): fill_kobj_path: path = '/devices/virtual/input/input16/event4' kobject: 'event4' (000000002b97591c): kobject_uevent_env kobject: 'event4' (000000002b97591c): fill_kobj_path: path = '/devices/virtual/input/input16/event4' kobject: '(null)' (00000000dbff8e11): kobject_cleanup, parent 000000002b97591c kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: '(null)' (00000000dbff8e11): calling ktype release kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'event4' (000000002b97591c): kobject_cleanup, parent (null) kobject: 'event4' (000000002b97591c): calling ktype release kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'event4': free name kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'input16' (000000009069cddd): kobject_uevent_env kobject: 'input16' (000000009069cddd): fill_kobj_path: path = '/devices/virtual/input/input16' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'input16' (000000009069cddd): kobject_cleanup, parent (null) kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'input16' (000000009069cddd): calling ktype release kobject: 'input16': free name kobject: 'input17' (0000000085c8b2fd): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'input17' (0000000085c8b2fd): kobject_uevent_env kobject: 'input17' (0000000085c8b2fd): fill_kobj_path: path = '/devices/virtual/input/input17' kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'input17' (0000000085c8b2fd): fill_kobj_path: path = '/devices/virtual/input/input17' input: syz0 as /devices/virtual/input/input17 kobject: 'event4' (0000000007555e16): kobject_add_internal: parent: 'input17', set: 'devices' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event4' (0000000007555e16): kobject_uevent_env kobject: 'event4' (0000000007555e16): fill_kobj_path: path = '/devices/virtual/input/input17/event4' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'event4' (0000000007555e16): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event4' (0000000007555e16): fill_kobj_path: path = '/devices/virtual/input/input17/event4' kobject: '(null)' (00000000e99a0659): kobject_cleanup, parent 0000000007555e16 kobject: '(null)' (00000000e99a0659): calling ktype release kobject: 'event4' (0000000007555e16): kobject_cleanup, parent (null) kobject: 'event4' (0000000007555e16): calling ktype release kobject: 'event4': free name kobject: 'input17' (0000000085c8b2fd): kobject_uevent_env kobject: 'input17' (0000000085c8b2fd): fill_kobj_path: path = '/devices/virtual/input/input17' kobject: 'input17' (0000000085c8b2fd): kobject_cleanup, parent (null) kobject: 'input17' (0000000085c8b2fd): calling ktype release kobject: 'input17': free name kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'input18' (00000000f4738b4c): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'input18' (00000000f4738b4c): kobject_uevent_env kobject: 'input18' (00000000f4738b4c): fill_kobj_path: path = '/devices/virtual/input/input18' kobject: 'input18' (00000000f4738b4c): fill_kobj_path: path = '/devices/virtual/input/input18' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'input19' (00000000ff713a94): kobject_add_internal: parent: 'input', set: 'devices' input: syz0 as /devices/virtual/input/input18 kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'input19' (00000000ff713a94): kobject_uevent_env kobject: 'event4' (000000002ad4c59f): kobject_add_internal: parent: 'input18', set: 'devices' kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'input19' (00000000ff713a94): fill_kobj_path: path = '/devices/virtual/input/input19' kobject: 'event4' (000000002ad4c59f): kobject_uevent_env kobject: 'event4' (000000002ad4c59f): fill_kobj_path: path = '/devices/virtual/input/input18/event4' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'input19' (00000000ff713a94): fill_kobj_path: path = '/devices/virtual/input/input19' kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' input: syz0 as /devices/virtual/input/input19 kobject: 'event4' (000000002ad4c59f): kobject_uevent_env kobject: 'event4' (000000002ad4c59f): fill_kobj_path: path = '/devices/virtual/input/input18/event4' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: '(null)' (00000000cd886242): kobject_cleanup, parent 000000002ad4c59f kobject: '(null)' (00000000cd886242): calling ktype release kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event4' (000000002ad4c59f): kobject_cleanup, parent (null) kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'event4' (000000002ad4c59f): calling ktype release kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'event4': free name kobject: 'event4' (00000000aed14c07): kobject_add_internal: parent: 'input19', set: 'devices' kobject: 'input18' (00000000f4738b4c): kobject_uevent_env kobject: 'input18' (00000000f4738b4c): fill_kobj_path: path = '/devices/virtual/input/input18' kobject: 'event4' (00000000aed14c07): kobject_uevent_env kobject: 'event4' (00000000aed14c07): fill_kobj_path: path = '/devices/virtual/input/input19/event4' kobject: 'input18' (00000000f4738b4c): kobject_cleanup, parent (null) kobject: 'input18' (00000000f4738b4c): calling ktype release kobject: 'input18': free name kobject: 'event4' (00000000aed14c07): kobject_uevent_env kobject: 'event4' (00000000aed14c07): fill_kobj_path: path = '/devices/virtual/input/input19/event4' kobject: '(null)' (0000000088d65781): kobject_cleanup, parent 00000000aed14c07 kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: '(null)' (0000000088d65781): calling ktype release kobject: 'input20' (00000000ba475f6f): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'event4' (00000000aed14c07): kobject_cleanup, parent (null) kobject: 'event4' (00000000aed14c07): calling ktype release kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'event4': free name kobject: 'input19' (00000000ff713a94): kobject_uevent_env kobject: 'input21' (0000000010e958db): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'input20' (00000000ba475f6f): kobject_uevent_env kobject: 'input20' (00000000ba475f6f): fill_kobj_path: path = '/devices/virtual/input/input20' kobject: 'input21' (0000000010e958db): kobject_uevent_env kobject: 'input19' (00000000ff713a94): fill_kobj_path: path = '/devices/virtual/input/input19' kobject: 'input21' (0000000010e958db): fill_kobj_path: path = '/devices/virtual/input/input21' kobject: 'input21' (0000000010e958db): fill_kobj_path: path = '/devices/virtual/input/input21' kobject: 'input19' (00000000ff713a94): kobject_cleanup, parent (null) kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' input: syz0 as /devices/virtual/input/input21 kobject: 'input20' (00000000ba475f6f): fill_kobj_path: path = '/devices/virtual/input/input20' kobject: 'event4' (0000000036695104): kobject_add_internal: parent: 'input21', set: 'devices' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'event4' (0000000036695104): kobject_uevent_env kobject: 'input19' (00000000ff713a94): calling ktype release kobject: 'event4' (0000000036695104): fill_kobj_path: path = '/devices/virtual/input/input21/event4' kobject: 'input22' (000000003acc3d2e): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'loop1' (0000000050be1688): kobject_uevent_env input: syz0 as /devices/virtual/input/input20 kobject: 'input22' (000000003acc3d2e): kobject_uevent_env kobject: 'input19': free name kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event5' (000000008c55c8ab): kobject_add_internal: parent: 'input20', set: 'devices' kobject: 'input22' (000000003acc3d2e): fill_kobj_path: path = '/devices/virtual/input/input22' kobject: 'event5' (000000008c55c8ab): kobject_uevent_env kobject: 'input22' (000000003acc3d2e): fill_kobj_path: path = '/devices/virtual/input/input22' kobject: 'event5' (000000008c55c8ab): fill_kobj_path: path = '/devices/virtual/input/input20/event5' input: syz0 as /devices/virtual/input/input22 kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'event4' (0000000036695104): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'event4' (0000000036695104): fill_kobj_path: path = '/devices/virtual/input/input21/event4' kobject: 'input23' (000000007f194116): kobject_add_internal: parent: 'input', set: 'devices' kobject: '(null)' (00000000ffe75a66): kobject_cleanup, parent 0000000036695104 kobject: '(null)' (00000000ffe75a66): calling ktype release kobject: 'input23' (000000007f194116): kobject_uevent_env kobject: 'input23' (000000007f194116): fill_kobj_path: path = '/devices/virtual/input/input23' kobject: 'input23' (000000007f194116): fill_kobj_path: path = '/devices/virtual/input/input23' input: syz0 as /devices/virtual/input/input23 kobject: 'event4' (0000000036695104): kobject_cleanup, parent (null) kobject: 'event4' (0000000036695104): calling ktype release kobject: 'event4': free name kobject: 'event4' (0000000075d03429): kobject_add_internal: parent: 'input22', set: 'devices' kobject: 'input21' (0000000010e958db): kobject_uevent_env kobject: 'input21' (0000000010e958db): fill_kobj_path: path = '/devices/virtual/input/input21' kobject: 'event4' (0000000075d03429): kobject_uevent_env kobject: 'input21' (0000000010e958db): kobject_cleanup, parent (null) kobject: 'event4' (0000000075d03429): fill_kobj_path: path = '/devices/virtual/input/input22/event4' kobject: 'input21' (0000000010e958db): calling ktype release kobject: 'input21': free name kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event5' (000000008c55c8ab): kobject_uevent_env kobject: 'event5' (000000008c55c8ab): fill_kobj_path: path = '/devices/virtual/input/input20/event5' kobject: '(null)' (00000000d6b38641): kobject_cleanup, parent 000000008c55c8ab kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '(null)' (00000000d6b38641): calling ktype release kobject: 'event5' (000000008c55c8ab): kobject_cleanup, parent (null) kobject: 'event5' (000000008c55c8ab): calling ktype release kobject: 'event5': free name kobject: 'event5' (00000000d92baa8d): kobject_add_internal: parent: 'input23', set: 'devices' kobject: 'input20' (00000000ba475f6f): kobject_uevent_env kobject: 'event5' (00000000d92baa8d): kobject_uevent_env kobject: 'input20' (00000000ba475f6f): fill_kobj_path: path = '/devices/virtual/input/input20' kobject: 'event5' (00000000d92baa8d): fill_kobj_path: path = '/devices/virtual/input/input23/event5' kobject: 'event4' (0000000075d03429): kobject_uevent_env kobject: 'input20' (00000000ba475f6f): kobject_cleanup, parent (null) kobject: 'event4' (0000000075d03429): fill_kobj_path: path = '/devices/virtual/input/input22/event4' kobject: 'input20' (00000000ba475f6f): calling ktype release kobject: '(null)' (00000000eb4ca61b): kobject_cleanup, parent 0000000075d03429 kobject: 'input20': free name kobject: '(null)' (00000000eb4ca61b): calling ktype release kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'event4' (0000000075d03429): kobject_cleanup, parent (null) kobject: 'input24' (000000001f39c316): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'event4' (0000000075d03429): calling ktype release kobject: 'event4': free name kobject: 'input24' (000000001f39c316): kobject_uevent_env kobject: 'input25' (00000000082d776f): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'input22' (000000003acc3d2e): kobject_uevent_env kobject: 'event5' (00000000d92baa8d): kobject_uevent_env kobject: 'event5' (00000000d92baa8d): fill_kobj_path: path = '/devices/virtual/input/input23/event5' kobject: 'input24' (000000001f39c316): fill_kobj_path: path = '/devices/virtual/input/input24' kobject: 'input22' (000000003acc3d2e): fill_kobj_path: path = '/devices/virtual/input/input22' kobject: 'input25' (00000000082d776f): kobject_uevent_env kobject: 'input22' (000000003acc3d2e): kobject_cleanup, parent (null) kobject: '(null)' (000000005f73a417): kobject_cleanup, parent 00000000d92baa8d kobject: 'input25' (00000000082d776f): fill_kobj_path: path = '/devices/virtual/input/input25' kobject: '(null)' (000000005f73a417): calling ktype release kobject: 'input22' (000000003acc3d2e): calling ktype release kobject: 'input24' (000000001f39c316): fill_kobj_path: path = '/devices/virtual/input/input24' kobject: 'input22': free name kobject: 'input25' (00000000082d776f): fill_kobj_path: path = '/devices/virtual/input/input25' input: syz0 as /devices/virtual/input/input24 input: syz0 as /devices/virtual/input/input25 kobject: 'event5' (00000000d92baa8d): kobject_cleanup, parent (null) kobject: 'event5' (00000000d92baa8d): calling ktype release kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'event5': free name kobject: 'event4' (00000000de9bce0c): kobject_add_internal: parent: 'input24', set: 'devices' kobject: 'input23' (000000007f194116): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'input26' (0000000084310d2a): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event4' (00000000de9bce0c): kobject_uevent_env kobject: 'input23' (000000007f194116): fill_kobj_path: path = '/devices/virtual/input/input23' kobject: 'input26' (0000000084310d2a): kobject_uevent_env kobject: 'event4' (00000000de9bce0c): fill_kobj_path: path = '/devices/virtual/input/input24/event4' kobject: 'input23' (000000007f194116): kobject_cleanup, parent (null) kobject: 'event5' (0000000075ace26e): kobject_add_internal: parent: 'input25', set: 'devices' kobject: 'input26' (0000000084310d2a): fill_kobj_path: path = '/devices/virtual/input/input26' kobject: 'input23' (000000007f194116): calling ktype release kobject: 'input23': free name kobject: 'event5' (0000000075ace26e): kobject_uevent_env kobject: 'event5' (0000000075ace26e): fill_kobj_path: path = '/devices/virtual/input/input25/event5' kobject: 'input26' (0000000084310d2a): fill_kobj_path: path = '/devices/virtual/input/input26' input: syz0 as /devices/virtual/input/input26 kobject: 'event4' (00000000de9bce0c): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'event4' (00000000de9bce0c): fill_kobj_path: path = '/devices/virtual/input/input24/event4' kobject: '(null)' (000000002162cf80): kobject_cleanup, parent 00000000de9bce0c kobject: '(null)' (000000002162cf80): calling ktype release kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'input27' (00000000b509a20a): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'event4' (00000000de9bce0c): kobject_cleanup, parent (null) kobject: 'input27' (00000000b509a20a): kobject_uevent_env kobject: 'input27' (00000000b509a20a): fill_kobj_path: path = '/devices/virtual/input/input27' kobject: 'event4' (00000000de9bce0c): calling ktype release kobject: 'input27' (00000000b509a20a): fill_kobj_path: path = '/devices/virtual/input/input27' input: syz0 as /devices/virtual/input/input27 kobject: 'event4': free name kobject: 'event4' (0000000048c44e4b): kobject_add_internal: parent: 'input26', set: 'devices' kobject: 'input24' (000000001f39c316): kobject_uevent_env kobject: 'event4' (0000000048c44e4b): kobject_uevent_env kobject: 'input24' (000000001f39c316): fill_kobj_path: path = '/devices/virtual/input/input24' kobject: 'event4' (0000000048c44e4b): fill_kobj_path: path = '/devices/virtual/input/input26/event4' kobject: 'input24' (000000001f39c316): kobject_cleanup, parent (null) kobject: 'input24' (000000001f39c316): calling ktype release kobject: 'event5' (0000000075ace26e): kobject_uevent_env kobject: 'input24': free name kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event5' (0000000075ace26e): fill_kobj_path: path = '/devices/virtual/input/input25/event5' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: '(null)' (00000000f753644f): kobject_cleanup, parent 0000000075ace26e kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: '(null)' (00000000f753644f): calling ktype release kobject: 'event5' (0000000075ace26e): kobject_cleanup, parent (null) kobject: 'event5' (0000000075ace26e): calling ktype release kobject: 'event5': free name kobject: 'event5' (00000000ee45b9a8): kobject_add_internal: parent: 'input27', set: 'devices' kobject: 'input25' (00000000082d776f): kobject_uevent_env kobject: 'event5' (00000000ee45b9a8): kobject_uevent_env kobject: 'input25' (00000000082d776f): fill_kobj_path: path = '/devices/virtual/input/input25' kobject: 'event5' (00000000ee45b9a8): fill_kobj_path: path = '/devices/virtual/input/input27/event5' kobject: 'input25' (00000000082d776f): kobject_cleanup, parent (null) kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'input25' (00000000082d776f): calling ktype release kobject: 'event4' (0000000048c44e4b): kobject_uevent_env kobject: 'input25': free name kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'event4' (0000000048c44e4b): fill_kobj_path: path = '/devices/virtual/input/input26/event4' kobject: 'input28' (00000000c4a7dc95): kobject_add_internal: parent: 'input', set: 'devices' kobject: '(null)' (00000000922915cb): kobject_cleanup, parent 0000000048c44e4b kobject: 'input28' (00000000c4a7dc95): kobject_uevent_env kobject: '(null)' (00000000922915cb): calling ktype release kobject: 'input28' (00000000c4a7dc95): fill_kobj_path: path = '/devices/virtual/input/input28' kobject: 'input28' (00000000c4a7dc95): fill_kobj_path: path = '/devices/virtual/input/input28' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' input: syz0 as /devices/virtual/input/input28 kobject: 'event4' (0000000048c44e4b): kobject_cleanup, parent (null) kobject: 'event4' (0000000048c44e4b): calling ktype release kobject: 'event4': free name kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'input26' (0000000084310d2a): kobject_uevent_env kobject: 'event5' (00000000ee45b9a8): kobject_uevent_env kobject: 'event5' (00000000ee45b9a8): fill_kobj_path: path = '/devices/virtual/input/input27/event5' kobject: 'input26' (0000000084310d2a): fill_kobj_path: path = '/devices/virtual/input/input26' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'input26' (0000000084310d2a): kobject_cleanup, parent (null) kobject: 'input26' (0000000084310d2a): calling ktype release kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'input26': free name kobject: '(null)' (00000000dc73dd49): kobject_cleanup, parent 00000000ee45b9a8 kobject: '(null)' (00000000dc73dd49): calling ktype release kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'event5' (00000000ee45b9a8): kobject_cleanup, parent (null) kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'input29' (00000000d79b7c1f): kobject_add_internal: parent: 'input', set: 'devices' kobject: 'event5' (00000000ee45b9a8): calling ktype release kobject: 'event5': free name kobject: 'event4' (0000000071750e19): kobject_add_internal: parent: 'input28', set: 'devices' kobject: 'input29' (00000000d79b7c1f): kobject_uevent_env kobject: 'input27' (00000000b509a20a): kobject_uevent_env kobject: 'input29' (00000000d79b7c1f): fill_kobj_path: path = '/devices/virtual/input/input29' kobject: 'input27' (00000000b509a20a): fill_kobj_path: path = '/devices/virtual/input/input27' kobject: 'event4' (0000000071750e19): kobject_uevent_env kobject: 'event4' (0000000071750e19): fill_kobj_path: path = '/devices/virtual/input/input28/event4' kobject: 'input29' (00000000d79b7c1f): fill_kobj_path: path = '/devices/virtual/input/input29' kobject: 'input27' (00000000b509a20a): kobject_cleanup, parent (null) input: syz0 as /devices/virtual/input/input29 kobject: 'event4' (0000000071750e19): kobject_uevent_env kobject: 'input27' (00000000b509a20a): calling ktype release kobject: 'event4' (0000000071750e19): fill_kobj_path: path = '/devices/virtual/input/input28/event4' kobject: 'input27': free name kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: '(null)' (00000000266f7258): kobject_cleanup, parent 0000000071750e19 kobject: '(null)' (00000000266f7258): calling ktype release kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'event4' (0000000071750e19): kobject_cleanup, parent (null) kobject: 'event4' (0000000071750e19): calling ktype release kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'event4': free name kobject: 'event4' (0000000043ac0dcd): kobject_add_internal: parent: 'input29', set: 'devices' kobject: 'input28' (00000000c4a7dc95): kobject_uevent_env kobject: 'event4' (0000000043ac0dcd): kobject_uevent_env kobject: 'input28' (00000000c4a7dc95): fill_kobj_path: path = '/devices/virtual/input/input28' kobject: 'event4' (0000000043ac0dcd): fill_kobj_path: path = '/devices/virtual/input/input29/event4' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'input28' (00000000c4a7dc95): kobject_cleanup, parent (null) kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'input28' (00000000c4a7dc95): calling ktype release kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'event4' (0000000043ac0dcd): kobject_uevent_env kobject: 'input28': free name kobject: 'event4' (0000000043ac0dcd): fill_kobj_path: path = '/devices/virtual/input/input29/event4' kobject: '(null)' (00000000db74056a): kobject_cleanup, parent 0000000043ac0dcd kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: '(null)' (00000000db74056a): calling ktype release kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'event4' (0000000043ac0dcd): kobject_cleanup, parent (null) kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'event4' (0000000043ac0dcd): calling ktype release kobject: 'event4': free name kobject: 'input29' (00000000d79b7c1f): kobject_uevent_env kobject: 'input29' (00000000d79b7c1f): fill_kobj_path: path = '/devices/virtual/input/input29' kobject: 'input29' (00000000d79b7c1f): kobject_cleanup, parent (null) kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'input29' (00000000d79b7c1f): calling ktype release kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'input29': free name kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (00000000dbbc1d4b): kobject_uevent_env kobject: 'loop5' (00000000dbbc1d4b): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000002685d956): kobject_uevent_env kobject: 'loop4' (000000002685d956): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000f55ad92e): kobject_uevent_env kobject: 'loop3' (00000000f55ad92e): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000dc3220de): kobject_uevent_env kobject: 'loop2' (00000000dc3220de): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (0000000050be1688): kobject_uevent_env kobject: 'loop1' (0000000050be1688): fill_kobj_path: path = '/devices/virtual/block/loop1' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1