===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 5.13.0-syzkaller #0 Not tainted ----------------------------------------------------- syz-executor.5/15391 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88801d1092b8 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:1012 [inline] ffff88801d1092b8 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync fs/fcntl.c:1033 [inline] ffff88801d1092b8 (&new->fa_lock){.+.?}-{2:2}, at: kill_fasync+0x14b/0x460 fs/fcntl.c:1026 and this task is already holding: ffff88802804c028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffff88802804c028 (&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 SOFTIRQ-irq-safe lock: (&evdev->mutex){+.+.}-{3:3} ... which became SOFTIRQ-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_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 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+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae to a SOFTIRQ-irq-unsafe lock: (&new->fa_lock){.+.?}-{2:2} ... which became SOFTIRQ-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 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 tcp_data_ready+0x106/0x540 net/ipv4/tcp_input.c:4928 tcp_data_queue+0x1a81/0x4b10 net/ipv4/tcp_input.c:4993 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881 tcp_v6_do_rcv+0x41d/0x12b0 net/ipv6/tcp_ipv6.c:1502 tcp_v6_rcv+0x3004/0x36a0 net/ipv6/tcp_ipv6.c:1735 ip6_protocol_deliver_rcu+0x2e9/0x17f0 net/ipv6/ip6_input.c:422 ip6_input_finish+0x7f/0x160 net/ipv6/ip6_input.c:463 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:472 dst_input include/net/dst.h:458 [inline] ip6_rcv_finish+0x1d7/0x310 net/ipv6/ip6_input.c:76 ip_sabotage_in net/bridge/br_netfilter_hooks.c:873 [inline] ip_sabotage_in+0x206/0x270 net/bridge/br_netfilter_hooks.c:864 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:589 nf_hook.constprop.0+0x377/0x650 include/linux/netfilter.h:256 NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x9e/0x3c0 net/ipv6/ip6_input.c:297 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5459 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5573 netif_receive_skb_internal net/core/dev.c:5678 [inline] netif_receive_skb+0x157/0x8e0 net/core/dev.c:5737 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] br_pass_frame_up+0x2eb/0x3e0 net/bridge/br_input.c:61 br_handle_frame_finish+0x678/0x1680 net/bridge/br_input.c:169 br_nf_hook_thresh+0x2bd/0x350 net/bridge/br_netfilter_hooks.c:1025 br_nf_pre_routing_finish_ipv6+0x69e/0xd80 net/bridge/br_netfilter_ipv6.c:206 NF_HOOK include/linux/netfilter.h:301 [inline] br_nf_pre_routing_ipv6+0x42f/0x7a0 net/bridge/br_netfilter_ipv6.c:236 br_nf_pre_routing+0x1622/0x1e60 net/bridge/br_netfilter_hooks.c:505 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_bridge_pre net/bridge/br_input.c:225 [inline] br_handle_frame+0x980/0x1180 net/bridge/br_input.c:368 __netif_receive_skb_core+0xc4f/0x37f0 net/core/dev.c:5353 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5457 __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] ip6_finish_output2+0x755/0x1700 net/ipv6/ip6_output.c:118 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline] __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215 dst_output include/net/dst.h:448 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip6_xmit+0x1277/0x1ea0 net/ipv6/ip6_output.c:320 inet6_csk_xmit+0x358/0x630 net/ipv6/inet6_connection_sock.c:135 __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_push+0x44d/0x6d0 net/ipv4/tcp.c:736 do_tcp_sendpages+0x9f3/0xdb0 net/ipv4/tcp.c:1105 tcp_sendpage_locked net/ipv4/tcp.c:1131 [inline] tcp_sendpage_locked net/ipv4/tcp.c:1123 [inline] tcp_sendpage+0x80/0xd0 net/ipv4/tcp.c:1141 inet_sendpage+0xd0/0x140 net/ipv4/af_inet.c:835 rds_tcp_xmit+0x2d0/0xa60 net/rds/tcp_send.c:118 rds_send_xmit+0x109b/0x2530 net/rds/send.c:367 rds_send_worker+0x92/0x2e0 net/rds/threads.c:200 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 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.5/15391: #0: ffff888022598110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x1d3/0x760 drivers/input/evdev.c:513 #1: ffff88802200c230 (&dev->event_lock){-...}-{2:2}, at: input_inject_event+0xa6/0x310 drivers/input/input.c:471 #2: ffffffff8bf79860 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:53 [inline] #2: ffffffff8bf79860 (rcu_read_lock){....}-{1:2}, at: is_event_supported drivers/input/input.c:50 [inline] #2: ffffffff8bf79860 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0x92/0x310 drivers/input/input.c:470 #3: ffffffff8bf79860 (rcu_read_lock){....}-{1:2}, at: input_dev_toggle drivers/input/input.c:1712 [inline] #3: ffffffff8bf79860 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x700 drivers/input/input.c:1832 #4: ffffffff8bf79860 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x59/0x3f0 drivers/input/evdev.c:296 #5: ffff88802804c028 (&client->buffer_lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] #5: ffff88802804c028 (&client->buffer_lock){....}-{2:2}, at: evdev_pass_values.part.0+0xf6/0x970 drivers/input/evdev.c:261 #6: ffffffff8bf79860 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x3d/0x460 fs/fcntl.c:1031 the dependencies between SOFTIRQ-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_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 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+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 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_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 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+0x13f/0x1f0 fs/open.c:1214 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 __mutex_lock_common kernel/locking/mutex.c:959 [inline] __mutex_lock+0x139/0x10c0 kernel/locking/mutex.c:1104 evdev_open_device drivers/input/evdev.c:393 [inline] evdev_open+0x2f3/0x6a0 drivers/input/evdev.c:487 chrdev_open+0x266/0x770 fs/char_dev.c:414 do_dentry_open+0x4b9/0x11b0 fs/open.c:826 do_open fs/namei.c:3361 [inline] path_openat+0x1c0e/0x27e0 fs/namei.c:3494 do_filp_open+0x190/0x3d0 fs/namei.c:3521 do_sys_openat2+0x16d/0x420 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+0x13f/0x1f0 fs/open.c:1214 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 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_mask drivers/input/evdev.c:980 [inline] evdev_do_ioctl+0x2d7/0x1820 drivers/input/evdev.c:1117 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_mask drivers/input/evdev.c:980 [inline] evdev_do_ioctl+0x2d7/0x1820 drivers/input/evdev.c:1117 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 SOFTIRQ-irq-unsafe lock: -> (&new->fa_lock){.+.?}-{2:2} { 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+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+0x16c/0x280 include/net/sock.h:2318 tcp_rcv_synsent_state_process net/ipv4/tcp_input.c:6163 [inline] tcp_rcv_state_process+0x1b41/0x4bb0 net/ipv4/tcp_input.c:6355 tcp_v6_do_rcv+0x7ad/0x12b0 net/ipv6/tcp_ipv6.c:1527 sk_backlog_rcv include/net/sock.h:1020 [inline] __release_sock+0x134/0x3b0 net/core/sock.c:2558 release_sock+0x54/0x1b0 net/core/sock.c:3082 inet_wait_for_connect net/ipv4/af_inet.c:597 [inline] __inet_stream_connect+0x5db/0xed0 net/ipv4/af_inet.c:689 inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:728 __sys_connect_file+0x155/0x1a0 net/socket.c:1824 __sys_connect+0x161/0x190 net/socket.c:1841 __do_sys_connect net/socket.c:1851 [inline] __se_sys_connect net/socket.c:1848 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1848 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 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] sock_def_readable+0x2cb/0x4c0 net/core/sock.c:2920 tcp_data_ready+0x106/0x540 net/ipv4/tcp_input.c:4928 tcp_data_queue+0x1a81/0x4b10 net/ipv4/tcp_input.c:4993 tcp_rcv_established+0x841/0x1eb0 net/ipv4/tcp_input.c:5881 tcp_v6_do_rcv+0x41d/0x12b0 net/ipv6/tcp_ipv6.c:1502 tcp_v6_rcv+0x3004/0x36a0 net/ipv6/tcp_ipv6.c:1735 ip6_protocol_deliver_rcu+0x2e9/0x17f0 net/ipv6/ip6_input.c:422 ip6_input_finish+0x7f/0x160 net/ipv6/ip6_input.c:463 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:472 dst_input include/net/dst.h:458 [inline] ip6_rcv_finish+0x1d7/0x310 net/ipv6/ip6_input.c:76 ip_sabotage_in net/bridge/br_netfilter_hooks.c:873 [inline] ip_sabotage_in+0x206/0x270 net/bridge/br_netfilter_hooks.c:864 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:589 nf_hook.constprop.0+0x377/0x650 include/linux/netfilter.h:256 NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x9e/0x3c0 net/ipv6/ip6_input.c:297 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5459 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5573 netif_receive_skb_internal net/core/dev.c:5678 [inline] netif_receive_skb+0x157/0x8e0 net/core/dev.c:5737 NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] br_pass_frame_up+0x2eb/0x3e0 net/bridge/br_input.c:61 br_handle_frame_finish+0x678/0x1680 net/bridge/br_input.c:169 br_nf_hook_thresh+0x2bd/0x350 net/bridge/br_netfilter_hooks.c:1025 br_nf_pre_routing_finish_ipv6+0x69e/0xd80 net/bridge/br_netfilter_ipv6.c:206 NF_HOOK include/linux/netfilter.h:301 [inline] br_nf_pre_routing_ipv6+0x42f/0x7a0 net/bridge/br_netfilter_ipv6.c:236 br_nf_pre_routing+0x1622/0x1e60 net/bridge/br_netfilter_hooks.c:505 nf_hook_entry_hookfn include/linux/netfilter.h:136 [inline] nf_hook_bridge_pre net/bridge/br_input.c:225 [inline] br_handle_frame+0x980/0x1180 net/bridge/br_input.c:368 __netif_receive_skb_core+0xc4f/0x37f0 net/core/dev.c:5353 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5457 __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] ip6_finish_output2+0x755/0x1700 net/ipv6/ip6_output.c:118 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline] __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215 dst_output include/net/dst.h:448 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip6_xmit+0x1277/0x1ea0 net/ipv6/ip6_output.c:320 inet6_csk_xmit+0x358/0x630 net/ipv6/inet6_connection_sock.c:135 __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_push+0x44d/0x6d0 net/ipv4/tcp.c:736 do_tcp_sendpages+0x9f3/0xdb0 net/ipv4/tcp.c:1105 tcp_sendpage_locked net/ipv4/tcp.c:1131 [inline] tcp_sendpage_locked net/ipv4/tcp.c:1123 [inline] tcp_sendpage+0x80/0xd0 net/ipv4/tcp.c:1141 inet_sendpage+0xd0/0x140 net/ipv4/af_inet.c:835 rds_tcp_xmit+0x2d0/0xa60 net/rds/tcp_send.c:118 rds_send_xmit+0x109b/0x2530 net/rds/send.c:367 rds_send_worker+0x92/0x2e0 net/rds/threads.c:200 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 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+0x16c/0x280 include/net/sock.h:2318 tcp_rcv_synsent_state_process net/ipv4/tcp_input.c:6163 [inline] tcp_rcv_state_process+0x1b41/0x4bb0 net/ipv4/tcp_input.c:6355 tcp_v6_do_rcv+0x7ad/0x12b0 net/ipv6/tcp_ipv6.c:1527 sk_backlog_rcv include/net/sock.h:1020 [inline] __release_sock+0x134/0x3b0 net/core/sock.c:2558 release_sock+0x54/0x1b0 net/core/sock.c:3082 inet_wait_for_connect net/ipv4/af_inet.c:597 [inline] __inet_stream_connect+0x5db/0xed0 net/ipv4/af_inet.c:689 inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:728 __sys_connect_file+0x155/0x1a0 net/socket.c:1824 __sys_connect+0x161/0x190 net/socket.c:1841 __do_sys_connect net/socket.c:1851 [inline] __se_sys_connect net/socket.c:1848 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1848 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+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+0x16c/0x280 include/net/sock.h:2318 tcp_rcv_synsent_state_process net/ipv4/tcp_input.c:6163 [inline] tcp_rcv_state_process+0x1b41/0x4bb0 net/ipv4/tcp_input.c:6355 tcp_v6_do_rcv+0x7ad/0x12b0 net/ipv6/tcp_ipv6.c:1527 sk_backlog_rcv include/net/sock.h:1020 [inline] __release_sock+0x134/0x3b0 net/core/sock.c:2558 release_sock+0x54/0x1b0 net/core/sock.c:3082 inet_wait_for_connect net/ipv4/af_inet.c:597 [inline] __inet_stream_connect+0x5db/0xed0 net/ipv4/af_inet.c:689 inet_stream_connect+0x53/0xa0 net/ipv4/af_inet.c:728 __sys_connect_file+0x155/0x1a0 net/socket.c:1824 __sys_connect+0x161/0x190 net/socket.c:1841 __do_sys_connect net/socket.c:1851 [inline] __se_sys_connect net/socket.c:1848 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1848 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 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: 1 PID: 15391 Comm: syz-executor.5 Not tainted 5.13.0-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:00007f88d5b4e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 00000000000002b8 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 0000000000a9fb1f R14: 00007f88d5b4e300 R15: 0000000000022000