===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 5.13.0-rc7-syzkaller #0 Not tainted ----------------------------------------------------- syz-executor.0/31496 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88806bfe29f0 (&new->fa_lock){.?.?}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1012 [inline] ffff88806bfe29f0 (&new->fa_lock){.?.?}-{2:2}, at: kill_fasync fs/fcntl.c:1033 [inline] ffff88806bfe29f0 (&new->fa_lock){.?.?}-{2:2}, at: kill_fasync+0x14b/0x460 fs/fcntl.c:1026 and this task is already holding: ffff88806c79f028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffff88806c79f028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261 which would create a new lock dependency: (&client->buffer_lock){....}-{2:2} -> (&new->fa_lock){.?.?}-{2:2} but this new dependency connects a HARDIRQ-irq-safe lock: (&evdev->mutex){+.+.}-{3:3} ... which became HARDIRQ-irq-safe at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __mutex_lock_common kernel/locking/mutex.c:959 [inline] __mutex_lock+0x139/0x10c0 kernel/locking/mutex.c:1104 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae to a HARDIRQ-irq-unsafe lock: (&new->fa_lock){.?.?}-{2:2} ... which became HARDIRQ-irq-unsafe at: ... lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x36/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 perf_event_wakeup kernel/events/core.c:6387 [inline] perf_pending_event+0x432/0x560 kernel/events/core.c:6470 irq_work_single+0x120/0x1f0 kernel/irq_work.c:155 irq_work_run_list+0x91/0xc0 kernel/irq_work.c:177 irq_work_run+0x54/0xd0 kernel/irq_work.c:186 __sysvec_irq_work+0x95/0x3d0 arch/x86/kernel/irq_work.c:22 sysvec_irq_work+0x8e/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:673 native_apic_mem_write arch/x86/include/asm/apic.h:107 [inline] __default_send_IPI_shortcut arch/x86/kernel/apic/ipi.c:139 [inline] default_send_IPI_self+0x5d/0xe0 arch/x86/kernel/apic/ipi.c:242 arch_irq_work_raise+0x92/0x110 arch/x86/kernel/irq_work.c:31 __irq_work_queue_local kernel/irq_work.c:59 [inline] __irq_work_queue_local+0x133/0x190 kernel/irq_work.c:53 irq_work_queue kernel/irq_work.c:75 [inline] irq_work_queue+0x47/0x80 kernel/irq_work.c:67 perf_output_wakeup kernel/events/ring_buffer.c:25 [inline] perf_output_put_handle+0x2e3/0x3f0 kernel/events/ring_buffer.c:131 perf_output_end+0x12/0xb0 kernel/events/ring_buffer.c:301 __perf_event_output kernel/events/core.c:7448 [inline] perf_event_output_backward+0x13a/0x270 kernel/events/core.c:7468 __perf_event_overflow+0x13c/0x3d0 kernel/events/core.c:9135 perf_swevent_overflow kernel/events/core.c:9211 [inline] perf_swevent_event+0x347/0x550 kernel/events/core.c:9239 do_perf_sw_event kernel/events/core.c:9352 [inline] ___perf_sw_event+0x31a/0x570 kernel/events/core.c:9383 __perf_sw_event+0x54/0x130 kernel/events/core.c:9395 perf_sw_event include/linux/perf_event.h:1170 [inline] do_user_addr_fault+0x5e1/0x1210 arch/x86/mm/fault.c:1294 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 __clear_user+0x40/0x70 arch/x86/lib/usercopy_64.c:24 clear_user+0xd3/0x110 arch/x86/lib/usercopy_64.c:54 iov_iter_zero+0x242/0x1830 lib/iov_iter.c:1029 read_iter_zero+0x10f/0x250 drivers/char/mem.c:493 call_read_iter include/linux/fs.h:2108 [inline] do_iter_readv_writev+0x56a/0x740 fs/read_write.c:738 do_iter_read+0x285/0x6e0 fs/read_write.c:801 vfs_readv+0xe5/0x150 fs/read_write.c:921 do_readv+0x139/0x300 fs/read_write.c:958 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae other info that might help us debug this: Chain exists of: &evdev->mutex --> &client->buffer_lock --> &new->fa_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&new->fa_lock); local_irq_disable(); lock(&evdev->mutex); lock(&client->buffer_lock); lock(&evdev->mutex); *** DEADLOCK *** 7 locks held by syz-executor.0/31496: #0: ffff888024afb110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x1d3/0x760 drivers/input/evdev.c:513 #1: ffff888024958230 (&dev->event_lock){-...}-{2:2}, at: input_inject_event+0xa6/0x310 drivers/input/input.c:471 #2: ffffffff8bf76da0 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:53 [inline] #2: ffffffff8bf76da0 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:50 [inline] #2: ffffffff8bf76da0 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x92/0x310 drivers/input/input.c:470 #3: ffffffff8bf76da0 (rcu_read_lock){....}-{1:2}, at: input_dev_toggle drivers/input/input.c:1712 [inline] #3: ffffffff8bf76da0 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x700 drivers/input/input.c:1832 #4: ffffffff8bf76da0 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x59/0x3f0 drivers/input/evdev.c:296 #5: ffff88806c79f028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] #5: ffff88806c79f028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261 #6: ffffffff8bf76da0 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x3d/0x460 fs/fcntl.c:1031 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&evdev->mutex){+.+.}-{3:3} { HARDIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __mutex_lock_common kernel/locking/mutex.c:959 [inline] __mutex_lock+0x139/0x10c0 kernel/locking/mutex.c:1104 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae SOFTIRQ-ON-W at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __mutex_lock_common kernel/locking/mutex.c:959 [inline] __mutex_lock+0x139/0x10c0 kernel/locking/mutex.c:1104 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __mutex_lock_common kernel/locking/mutex.c:959 [inline] __mutex_lock+0x139/0x10c0 kernel/locking/mutex.c:1104 evdev_mark_dead drivers/input/evdev.c:1314 [inline] evdev_cleanup+0x21/0x1a0 drivers/input/evdev.c:1323 evdev_disconnect+0x45/0xb0 drivers/input/evdev.c:1407 __input_unregister_device+0x206/0x470 drivers/input/input.c:2189 input_unregister_device+0xb4/0xf0 drivers/input/input.c:2379 uinput_destroy_device+0x1f4/0x260 drivers/input/misc/uinput.c:298 uinput_release+0x37/0x50 drivers/input/misc/uinput.c:710 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] __key.6+0x0/0x40 ... acquired at: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159 evdev_set_clk_type drivers/input/evdev.c:201 [inline] evdev_do_ioctl+0x726/0x1820 drivers/input/evdev.c:1126 evdev_ioctl_handler drivers/input/evdev.c:1272 [inline] evdev_ioctl+0x145/0x1a0 drivers/input/evdev.c:1281 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae -> (&client->buffer_lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:159 evdev_set_clk_type drivers/input/evdev.c:201 [inline] evdev_do_ioctl+0x726/0x1820 drivers/input/evdev.c:1126 evdev_ioctl_handler drivers/input/evdev.c:1272 [inline] evdev_ioctl+0x145/0x1a0 drivers/input/evdev.c:1281 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl fs/ioctl.c:1055 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] __key.4+0x0/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278 evdev_pass_values drivers/input/evdev.c:253 [inline] evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306 input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115 input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145 input_pass_values drivers/input/input.c:134 [inline] input_handle_event+0x373/0x1440 drivers/input/input.c:404 input_inject_event+0x2f5/0x310 drivers/input/input.c:476 evdev_write+0x430/0x760 drivers/input/evdev.c:530 vfs_write+0x28e/0xa30 fs/read_write.c:603 ksys_write+0x1ee/0x250 fs/read_write.c:658 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae the dependencies between the lock to be acquired and HARDIRQ-irq-unsafe lock: -> (&new->fa_lock){.?.?}-{2:2} { IN-HARDIRQ-R at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x36/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 perf_event_wakeup kernel/events/core.c:6387 [inline] perf_pending_event+0x432/0x560 kernel/events/core.c:6470 irq_work_single+0x120/0x1f0 kernel/irq_work.c:155 irq_work_run_list+0x91/0xc0 kernel/irq_work.c:177 irq_work_run+0x54/0xd0 kernel/irq_work.c:186 __sysvec_irq_work+0x95/0x3d0 arch/x86/kernel/irq_work.c:22 sysvec_irq_work+0x8e/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:673 native_apic_mem_write arch/x86/include/asm/apic.h:107 [inline] __default_send_IPI_shortcut arch/x86/kernel/apic/ipi.c:139 [inline] default_send_IPI_self+0x5d/0xe0 arch/x86/kernel/apic/ipi.c:242 arch_irq_work_raise+0x92/0x110 arch/x86/kernel/irq_work.c:31 __irq_work_queue_local kernel/irq_work.c:59 [inline] __irq_work_queue_local+0x133/0x190 kernel/irq_work.c:53 irq_work_queue kernel/irq_work.c:75 [inline] irq_work_queue+0x47/0x80 kernel/irq_work.c:67 perf_output_wakeup kernel/events/ring_buffer.c:25 [inline] perf_output_put_handle+0x2e3/0x3f0 kernel/events/ring_buffer.c:131 perf_output_end+0x12/0xb0 kernel/events/ring_buffer.c:301 __perf_event_output kernel/events/core.c:7448 [inline] perf_event_output_backward+0x13a/0x270 kernel/events/core.c:7468 __perf_event_overflow+0x13c/0x3d0 kernel/events/core.c:9135 perf_swevent_overflow kernel/events/core.c:9211 [inline] perf_swevent_event+0x347/0x550 kernel/events/core.c:9239 do_perf_sw_event kernel/events/core.c:9352 [inline] ___perf_sw_event+0x31a/0x570 kernel/events/core.c:9383 __perf_sw_event+0x54/0x130 kernel/events/core.c:9395 perf_sw_event include/linux/perf_event.h:1170 [inline] do_user_addr_fault+0x5e1/0x1210 arch/x86/mm/fault.c:1294 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 __clear_user+0x40/0x70 arch/x86/lib/usercopy_64.c:24 clear_user+0xd3/0x110 arch/x86/lib/usercopy_64.c:54 iov_iter_zero+0x242/0x1830 lib/iov_iter.c:1029 read_iter_zero+0x10f/0x250 drivers/char/mem.c:493 call_read_iter include/linux/fs.h:2108 [inline] do_iter_readv_writev+0x56a/0x740 fs/read_write.c:738 do_iter_read+0x285/0x6e0 fs/read_write.c:801 vfs_readv+0xe5/0x150 fs/read_write.c:921 do_readv+0x139/0x300 fs/read_write.c:958 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x36/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1299 sk_wake_async include/net/sock.h:2322 [inline] sk_wake_async include/net/sock.h:2318 [inline] tcp_fin+0x72d/0x970 net/ipv4/tcp_input.c:4348 tcp_data_queue+0x20de/0x4b10 net/ipv4/tcp_input.c:4973 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881 tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1694 tcp_v4_rcv+0x3298/0x3950 net/ipv4/tcp_ipv4.c:2077 ip_protocol_deliver_rcu+0x5c/0xa20 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:458 [inline] ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:429 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:540 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5459 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5573 process_backlog+0x232/0x6c0 net/core/dev.c:6437 __napi_poll+0xaf/0x440 net/core/dev.c:6985 napi_poll net/core/dev.c:7052 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7139 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 do_softirq.part.0+0xd9/0x130 kernel/softirq.c:460 do_softirq kernel/softirq.c:452 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:384 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:746 [inline] ip_finish_output2+0x88b/0x21f0 net/ipv4/ip_output.c:231 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x396/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:448 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x905/0x1a20 net/ipv4/ip_output.c:533 __tcp_transmit_skb+0x1883/0x38f0 net/ipv4/tcp_output.c:1405 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline] tcp_write_xmit+0xdee/0x6040 net/ipv4/tcp_output.c:2689 __tcp_push_pending_frames+0xaa/0x390 net/ipv4/tcp_output.c:2873 tcp_send_fin+0x117/0xbb0 net/ipv4/tcp_output.c:3422 __tcp_close+0xaca/0x1170 net/ipv4/tcp.c:2790 tcp_close+0x29/0xc0 net/ipv4/tcp.c:2880 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431 __sock_release+0xcd/0x280 net/socket.c:599 sock_close+0x18/0x20 net/socket.c:1245 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae IN-SOFTIRQ-R at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x36/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1299 sk_wake_async include/net/sock.h:2322 [inline] sk_wake_async include/net/sock.h:2318 [inline] tcp_fin+0x72d/0x970 net/ipv4/tcp_input.c:4348 tcp_data_queue+0x20de/0x4b10 net/ipv4/tcp_input.c:4973 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881 tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1694 tcp_v4_rcv+0x3298/0x3950 net/ipv4/tcp_ipv4.c:2077 ip_protocol_deliver_rcu+0x5c/0xa20 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:458 [inline] ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:429 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:540 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5459 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5573 process_backlog+0x232/0x6c0 net/core/dev.c:6437 __napi_poll+0xaf/0x440 net/core/dev.c:6985 napi_poll net/core/dev.c:7052 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7139 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 do_softirq.part.0+0xd9/0x130 kernel/softirq.c:460 do_softirq kernel/softirq.c:452 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:384 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:746 [inline] ip_finish_output2+0x88b/0x21f0 net/ipv4/ip_output.c:231 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x396/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:448 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x905/0x1a20 net/ipv4/ip_output.c:533 __tcp_transmit_skb+0x1883/0x38f0 net/ipv4/tcp_output.c:1405 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline] tcp_write_xmit+0xdee/0x6040 net/ipv4/tcp_output.c:2689 __tcp_push_pending_frames+0xaa/0x390 net/ipv4/tcp_output.c:2873 tcp_send_fin+0x117/0xbb0 net/ipv4/tcp_output.c:3422 __tcp_close+0xaca/0x1170 net/ipv4/tcp.c:2790 tcp_close+0x29/0xc0 net/ipv4/tcp.c:2880 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431 __sock_release+0xcd/0x280 net/socket.c:599 sock_close+0x18/0x20 net/socket.c:1245 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae SOFTIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1299 sk_wake_async include/net/sock.h:2322 [inline] sk_wake_async include/net/sock.h:2318 [inline] sock_def_readable+0x2cb/0x4c0 net/core/sock.c:2920 unix_dgram_sendmsg+0xff9/0x1a80 net/unix/af_unix.c:1801 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x331/0x810 net/socket.c:2337 ___sys_sendmsg+0xf3/0x170 net/socket.c:2391 __sys_sendmmsg+0x195/0x470 net/socket.c:2477 __do_sys_sendmmsg net/socket.c:2506 [inline] __se_sys_sendmmsg net/socket.c:2503 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2503 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline] _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:311 fasync_remove_entry+0xb6/0x1f0 fs/fcntl.c:890 fasync_helper+0x9e/0xb0 fs/fcntl.c:993 sock_fasync+0x94/0x140 net/socket.c:1270 __fput+0x712/0x920 fs/file_table.c:277 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x36/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 sock_wake_async+0xd2/0x160 net/socket.c:1299 sk_wake_async include/net/sock.h:2322 [inline] sk_wake_async include/net/sock.h:2318 [inline] tcp_fin+0x72d/0x970 net/ipv4/tcp_input.c:4348 tcp_data_queue+0x20de/0x4b10 net/ipv4/tcp_input.c:4973 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881 tcp_v4_do_rcv+0x5d1/0x870 net/ipv4/tcp_ipv4.c:1694 tcp_v4_rcv+0x3298/0x3950 net/ipv4/tcp_ipv4.c:2077 ip_protocol_deliver_rcu+0x5c/0xa20 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x20a/0x370 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip_local_deliver+0x1b3/0x200 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:458 [inline] ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:429 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip_rcv+0xaa/0xd0 net/ipv4/ip_input.c:540 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5459 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5573 process_backlog+0x232/0x6c0 net/core/dev.c:6437 __napi_poll+0xaf/0x440 net/core/dev.c:6985 napi_poll net/core/dev.c:7052 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7139 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559 do_softirq.part.0+0xd9/0x130 kernel/softirq.c:460 do_softirq kernel/softirq.c:452 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:384 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:746 [inline] ip_finish_output2+0x88b/0x21f0 net/ipv4/ip_output.c:231 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x396/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:448 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] __ip_queue_xmit+0x905/0x1a20 net/ipv4/ip_output.c:533 __tcp_transmit_skb+0x1883/0x38f0 net/ipv4/tcp_output.c:1405 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline] tcp_write_xmit+0xdee/0x6040 net/ipv4/tcp_output.c:2689 __tcp_push_pending_frames+0xaa/0x390 net/ipv4/tcp_output.c:2873 tcp_send_fin+0x117/0xbb0 net/ipv4/tcp_output.c:3422 __tcp_close+0xaca/0x1170 net/ipv4/tcp.c:2790 tcp_close+0x29/0xc0 net/ipv4/tcp.c:2880 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431 __sock_release+0xcd/0x280 net/socket.c:599 sock_close+0x18/0x20 net/socket.c:1245 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x281/0x290 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] __key.0+0x0/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278 evdev_pass_values drivers/input/evdev.c:253 [inline] evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306 input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115 input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145 input_pass_values drivers/input/input.c:134 [inline] input_handle_event+0x373/0x1440 drivers/input/input.c:404 input_inject_event+0x2f5/0x310 drivers/input/input.c:476 evdev_write+0x430/0x760 drivers/input/evdev.c:530 vfs_write+0x28e/0xa30 fs/read_write.c:603 ksys_write+0x1ee/0x250 fs/read_write.c:658 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae stack backtrace: CPU: 0 PID: 31496 Comm: syz-executor.0 Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 print_bad_irq_dependency kernel/locking/lockdep.c:2464 [inline] check_irq_usage.cold+0x4d6/0x6c5 kernel/locking/lockdep.c:2693 check_prev_add kernel/locking/lockdep.c:2944 [inline] check_prevs_add kernel/locking/lockdep.c:3063 [inline] validate_chain kernel/locking/lockdep.c:3678 [inline] __lock_acquire+0x2a2f/0x5230 kernel/locking/lockdep.c:4904 lock_acquire kernel/locking/lockdep.c:5514 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5479 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync fs/fcntl.c:1033 [inline] kill_fasync+0x14b/0x460 fs/fcntl.c:1026 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values.part.0+0x64e/0x970 drivers/input/evdev.c:278 evdev_pass_values drivers/input/evdev.c:253 [inline] evdev_events+0x28b/0x3f0 drivers/input/evdev.c:306 input_to_handler+0x2a0/0x4c0 drivers/input/input.c:115 input_pass_values.part.0+0x284/0x700 drivers/input/input.c:145 input_pass_values drivers/input/input.c:134 [inline] input_handle_event+0x373/0x1440 drivers/input/input.c:404 input_inject_event+0x2f5/0x310 drivers/input/input.c:476 evdev_write+0x430/0x760 drivers/input/evdev.c:530 vfs_write+0x28e/0xa30 fs/read_write.c:603 ksys_write+0x1ee/0x250 fs/read_write.c:658 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feb9375f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 0000000000000373 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffe2121109f R14: 00007feb9375f300 R15: 0000000000022000