===================================================== WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected 5.13.0-rc7-syzkaller #0 Not tainted ----------------------------------------------------- syz-executor.0/24005 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88802081f408 (&new->fa_lock){.?.?}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1012 [inline] ffff88802081f408 (&new->fa_lock){.?.?}-{2:2}, at: kill_fasync+0x19b/0x440 fs/fcntl.c:1033 and this task is already holding: ffff88807b66d028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffff88807b66d028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0xd9/0xaa0 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+0x182/0x4a0 kernel/locking/lockdep.c:5514 __mutex_lock_common+0x1bf/0x3100 kernel/locking/mutex.c:959 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_interruptible_nested+0x1a/0x20 kernel/locking/mutex.c:1141 evdev_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f6/0x600 drivers/input/evdev.c:487 chrdev_open+0x53b/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7cb/0x1010 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x28e6/0x39b0 fs/namei.c:3494 do_filp_open+0x221/0x460 fs/namei.c:3521 do_sys_openat2+0x124/0x460 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1214 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 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+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 perf_event_wakeup+0x284/0x2e0 kernel/events/core.c:6387 perf_pending_event+0x23d/0x560 kernel/events/core.c:6470 irq_work_single kernel/irq_work.c:155 [inline] irq_work_run_list kernel/irq_work.c:177 [inline] irq_work_run+0x246/0x720 kernel/irq_work.c:186 __sysvec_irq_work+0x62/0x70 arch/x86/kernel/irq_work.c:22 sysvec_irq_work+0x8c/0xb0 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+0x6a/0xc0 arch/x86/kernel/apic/ipi.c:242 arch_irq_work_raise+0x93/0xe0 arch/x86/kernel/irq_work.c:31 irq_work_queue+0x91/0x120 kernel/irq_work.c:75 __perf_event_overflow+0x29d/0x380 kernel/events/core.c:9139 do_perf_sw_event kernel/events/core.c:9352 [inline] ___perf_sw_event+0x4b5/0x630 kernel/events/core.c:9383 __perf_sw_event+0x13f/0x270 kernel/events/core.c:9395 mm_account_fault include/linux/perf_event.h:1170 [inline] handle_mm_fault+0x228f/0x2620 mm/memory.c:4659 do_user_addr_fault+0x8ce/0x1120 arch/x86/mm/fault.c:1390 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0xa1/0x1e0 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:205 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] copyin lib/iov_iter.c:201 [inline] _copy_from_iter_full+0x348/0x10d0 lib/iov_iter.c:834 copy_from_iter_full include/linux/uio.h:163 [inline] skb_do_copy_data_nocache+0x12e/0x340 include/net/sock.h:2078 skb_copy_to_page_nocache include/net/sock.h:2104 [inline] tcp_sendmsg_locked+0x18b1/0x40a0 net/ipv4/tcp.c:1361 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1458 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x541/0x720 net/socket.c:1964 __do_sys_sendto net/socket.c:1976 [inline] __se_sys_sendto net/socket.c:1972 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:1972 do_syscall_64+0x3f/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.0/24005: #0: ffff888022b64110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x234/0x780 drivers/input/evdev.c:513 #1: ffff888022a0a230 (&dev->event_lock){-.-.}-{2:2}, at: input_inject_event+0xb3/0x280 drivers/input/input.c:471 #2: ffffffff8cf15d00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:266 #3: ffffffff8cf15d00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:266 #4: ffffffff8cf15d00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:266 #5: ffff88807b66d028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] #5: ffff88807b66d028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values+0xd9/0xaa0 drivers/input/evdev.c:261 #6: ffffffff8cf15d00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:266 the dependencies between HARDIRQ-irq-safe lock and the holding lock: -> (&evdev->mutex){+.+.}-{3:3} { HARDIRQ-ON-W at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __mutex_lock_common+0x1bf/0x3100 kernel/locking/mutex.c:959 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_interruptible_nested+0x1a/0x20 kernel/locking/mutex.c:1141 evdev_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f6/0x600 drivers/input/evdev.c:487 chrdev_open+0x53b/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7cb/0x1010 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x28e6/0x39b0 fs/namei.c:3494 do_filp_open+0x221/0x460 fs/namei.c:3521 do_sys_openat2+0x124/0x460 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1214 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae SOFTIRQ-ON-W at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __mutex_lock_common+0x1bf/0x3100 kernel/locking/mutex.c:959 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_interruptible_nested+0x1a/0x20 kernel/locking/mutex.c:1141 evdev_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f6/0x600 drivers/input/evdev.c:487 chrdev_open+0x53b/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7cb/0x1010 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x28e6/0x39b0 fs/namei.c:3494 do_filp_open+0x221/0x460 fs/namei.c:3521 do_sys_openat2+0x124/0x460 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1214 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL USE at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __mutex_lock_common+0x1bf/0x3100 kernel/locking/mutex.c:959 __mutex_lock kernel/locking/mutex.c:1104 [inline] mutex_lock_interruptible_nested+0x1a/0x20 kernel/locking/mutex.c:1141 evdev_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f6/0x600 drivers/input/evdev.c:487 chrdev_open+0x53b/0x5f0 fs/char_dev.c:414 do_dentry_open+0x7cb/0x1010 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x28e6/0x39b0 fs/namei.c:3494 do_filp_open+0x221/0x460 fs/namei.c:3521 do_sys_openat2+0x124/0x460 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1214 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] evdev_connect.__key.9+0x0/0x40 ... acquired at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xb3/0x100 kernel/locking/spinlock.c:159 evdev_set_mask drivers/input/evdev.c:980 [inline] evdev_do_ioctl drivers/input/evdev.c:1117 [inline] evdev_ioctl_handler+0x1dd8/0x26a0 drivers/input/evdev.c:1272 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae -> (&client->buffer_lock){....}-{2:2} { INITIAL USE at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xb3/0x100 kernel/locking/spinlock.c:159 evdev_set_mask drivers/input/evdev.c:980 [inline] evdev_do_ioctl drivers/input/evdev.c:1117 [inline] evdev_ioctl_handler+0x1dd8/0x26a0 drivers/input/evdev.c:1272 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:1069 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:1055 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] evdev_open.__key.23+0x0/0x40 ... acquired at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x58a/0xaa0 drivers/input/evdev.c:278 evdev_events+0x1c5/0x270 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:115 [inline] input_pass_values+0x89c/0x11d0 drivers/input/input.c:145 input_handle_event+0xb99/0x1550 drivers/input/input.c:404 input_inject_event+0x1e8/0x280 drivers/input/input.c:476 evdev_write+0x5f0/0x780 drivers/input/evdev.c:530 vfs_write+0x289/0xc90 fs/read_write.c:603 ksys_write+0x171/0x2a0 fs/read_write.c:658 do_syscall_64+0x3f/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+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 perf_event_wakeup+0x284/0x2e0 kernel/events/core.c:6387 perf_pending_event+0x23d/0x560 kernel/events/core.c:6470 irq_work_single kernel/irq_work.c:155 [inline] irq_work_run_list kernel/irq_work.c:177 [inline] irq_work_run+0x246/0x720 kernel/irq_work.c:186 __sysvec_irq_work+0x62/0x70 arch/x86/kernel/irq_work.c:22 sysvec_irq_work+0x8c/0xb0 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+0x6a/0xc0 arch/x86/kernel/apic/ipi.c:242 arch_irq_work_raise+0x93/0xe0 arch/x86/kernel/irq_work.c:31 irq_work_queue+0x91/0x120 kernel/irq_work.c:75 __perf_event_overflow+0x29d/0x380 kernel/events/core.c:9139 do_perf_sw_event kernel/events/core.c:9352 [inline] ___perf_sw_event+0x4b5/0x630 kernel/events/core.c:9383 __perf_sw_event+0x13f/0x270 kernel/events/core.c:9395 mm_account_fault include/linux/perf_event.h:1170 [inline] handle_mm_fault+0x228f/0x2620 mm/memory.c:4659 do_user_addr_fault+0x8ce/0x1120 arch/x86/mm/fault.c:1390 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0xa1/0x1e0 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:205 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline] copyin lib/iov_iter.c:201 [inline] _copy_from_iter_full+0x348/0x10d0 lib/iov_iter.c:834 copy_from_iter_full include/linux/uio.h:163 [inline] skb_do_copy_data_nocache+0x12e/0x340 include/net/sock.h:2078 skb_copy_to_page_nocache include/net/sock.h:2104 [inline] tcp_sendmsg_locked+0x18b1/0x40a0 net/ipv4/tcp.c:1361 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1458 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x541/0x720 net/socket.c:1964 __do_sys_sendto net/socket.c:1976 [inline] __se_sys_sendto net/socket.c:1972 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:1972 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae HARDIRQ-ON-R at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 sock_wake_async+0x133/0x150 net/socket.c:1299 sk_wake_async+0x17f/0x200 include/net/sock.h:2322 tcp_rcv_state_process+0x1026/0x2370 net/ipv4/tcp_input.c:6421 tcp_v4_do_rcv+0x5ab/0x870 net/ipv4/tcp_ipv4.c:1716 sk_backlog_rcv include/net/sock.h:1020 [inline] __release_sock+0x1db/0x4d0 net/core/sock.c:2558 release_sock+0x5d/0x1c0 net/core/sock.c:3082 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1459 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x541/0x720 net/socket.c:1964 __do_sys_sendto net/socket.c:1976 [inline] __se_sys_sendto net/socket.c:1972 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:1972 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae IN-SOFTIRQ-R at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 sock_wake_async+0x133/0x150 net/socket.c:1299 sk_wake_async+0x17f/0x200 include/net/sock.h:2322 sock_def_readable+0x18a/0x210 net/core/sock.c:2920 dccp_fin net/dccp/input.c:40 [inline] dccp_rcv_close+0x11c/0x1a0 net/dccp/input.c:77 __dccp_rcv_established+0x21c/0x580 net/dccp/input.c:316 dccp_rcv_established+0x29b/0x310 net/dccp/input.c:376 dccp_v6_do_rcv+0x241/0xb90 net/dccp/ipv6.c:621 sk_backlog_rcv include/net/sock.h:1020 [inline] __sk_receive_skb+0x43a/0x9d0 net/core/sock.c:509 dccp_v6_rcv+0xd2b/0x1120 net/dccp/ipv6.c:790 ip6_protocol_deliver_rcu+0x9b5/0x1320 net/ipv6/ip6_input.c:422 ip6_input_finish net/ipv6/ip6_input.c:463 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip6_input+0x10b/0x190 net/ipv6/ip6_input.c:472 __netif_receive_skb_one_core net/core/dev.c:5459 [inline] __netif_receive_skb+0x1d1/0x500 net/core/dev.c:5573 process_backlog+0x4d8/0x950 net/core/dev.c:6437 __napi_poll+0xba/0x4f0 net/core/dev.c:6985 napi_poll net/core/dev.c:7052 [inline] net_rx_action+0x62c/0xf30 net/core/dev.c:7139 __do_softirq+0x372/0x7a6 kernel/softirq.c:559 do_softirq+0x14d/0x200 kernel/softirq.c:460 __local_bh_enable_ip+0x184/0x1c0 kernel/softirq.c:384 rcu_read_unlock_bh include/linux/rcupdate.h:746 [inline] ip6_finish_output2+0x11b1/0x14f0 net/ipv6/ip6_output.c:118 dst_output include/net/dst.h:448 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip6_xmit+0xeba/0x1890 net/ipv6/ip6_output.c:320 inet6_csk_xmit+0x393/0x510 net/ipv6/inet6_connection_sock.c:135 dccp_transmit_skb+0x9dd/0xe50 net/dccp/output.c:138 dccp_terminate_connection net/dccp/proto.c:965 [inline] dccp_close+0x7e6/0x12c0 net/dccp/proto.c:1028 inet_release+0x16e/0x1f0 net/ipv4/af_inet.c:431 __sock_release net/socket.c:599 [inline] sock_close+0xd8/0x260 net/socket.c:1245 __fput+0x352/0x7b0 fs/file_table.c:280 task_work_run+0x146/0x1c0 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+0x201/0x220 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x26/0x70 kernel/entry/common.c:302 do_syscall_64+0x4b/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae SOFTIRQ-ON-R at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 sock_wake_async+0x133/0x150 net/socket.c:1299 sk_wake_async+0x17f/0x200 include/net/sock.h:2322 tcp_rcv_state_process+0x1026/0x2370 net/ipv4/tcp_input.c:6421 tcp_v4_do_rcv+0x5ab/0x870 net/ipv4/tcp_ipv4.c:1716 sk_backlog_rcv include/net/sock.h:1020 [inline] __release_sock+0x1db/0x4d0 net/core/sock.c:2558 release_sock+0x5d/0x1c0 net/core/sock.c:3082 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1459 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x541/0x720 net/socket.c:1964 __do_sys_sendto net/socket.c:1976 [inline] __se_sys_sendto net/socket.c:1972 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:1972 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL USE at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_write_lock_irq include/linux/rwlock_api_smp.h:196 [inline] _raw_write_lock_irq+0xae/0xf0 kernel/locking/spinlock.c:311 fasync_remove_entry+0xff/0x1d0 fs/fcntl.c:890 __fput+0x65b/0x7b0 fs/file_table.c:277 task_work_run+0x146/0x1c0 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+0x201/0x220 kernel/entry/common.c:209 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x26/0x70 kernel/entry/common.c:302 do_syscall_64+0x4b/0xb0 arch/x86/entry/common.c:57 entry_SYSCALL_64_after_hwframe+0x44/0xae INITIAL READ USE at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 sock_wake_async+0x133/0x150 net/socket.c:1299 sk_wake_async+0x17f/0x200 include/net/sock.h:2322 tcp_rcv_state_process+0x1026/0x2370 net/ipv4/tcp_input.c:6421 tcp_v4_do_rcv+0x5ab/0x870 net/ipv4/tcp_ipv4.c:1716 sk_backlog_rcv include/net/sock.h:1020 [inline] __release_sock+0x1db/0x4d0 net/core/sock.c:2558 release_sock+0x5d/0x1c0 net/core/sock.c:3082 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1459 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x541/0x720 net/socket.c:1964 __do_sys_sendto net/socket.c:1976 [inline] __se_sys_sendto net/socket.c:1972 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:1972 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae } ... key at: [] fasync_insert_entry.__key+0x0/0x40 ... acquired at: lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x58a/0xaa0 drivers/input/evdev.c:278 evdev_events+0x1c5/0x270 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:115 [inline] input_pass_values+0x89c/0x11d0 drivers/input/input.c:145 input_handle_event+0xb99/0x1550 drivers/input/input.c:404 input_inject_event+0x1e8/0x280 drivers/input/input.c:476 evdev_write+0x5f0/0x780 drivers/input/evdev.c:530 vfs_write+0x289/0xc90 fs/read_write.c:603 ksys_write+0x171/0x2a0 fs/read_write.c:658 do_syscall_64+0x3f/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae stack backtrace: CPU: 1 PID: 24005 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+0x202/0x31e lib/dump_stack.c:120 print_bad_irq_dependency kernel/locking/lockdep.c:2464 [inline] check_irq_usage kernel/locking/lockdep.c:2693 [inline] check_prev_add kernel/locking/lockdep.c:2944 [inline] check_prevs_add+0x4ecf/0x5b60 kernel/locking/lockdep.c:3063 validate_chain kernel/locking/lockdep.c:3678 [inline] __lock_acquire+0x4307/0x6040 kernel/locking/lockdep.c:4904 lock_acquire+0x182/0x4a0 kernel/locking/lockdep.c:5514 __raw_read_lock include/linux/rwlock_api_smp.h:149 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:223 kill_fasync_rcu fs/fcntl.c:1012 [inline] kill_fasync+0x19b/0x440 fs/fcntl.c:1033 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x58a/0xaa0 drivers/input/evdev.c:278 evdev_events+0x1c5/0x270 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:115 [inline] input_pass_values+0x89c/0x11d0 drivers/input/input.c:145 input_handle_event+0xb99/0x1550 drivers/input/input.c:404 input_inject_event+0x1e8/0x280 drivers/input/input.c:476 evdev_write+0x5f0/0x780 drivers/input/evdev.c:530 vfs_write+0x289/0xc90 fs/read_write.c:603 ksys_write+0x171/0x2a0 fs/read_write.c:658 do_syscall_64+0x3f/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:00007fa54b1d6188 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: 00007fff7e8e2cef R14: 00007fa54b1d6300 R15: 0000000000022000