===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 6.1.84-syzkaller #0 Not tainted ----------------------------------------------------- syz-executor.1/18046 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffff88801f8514b0 (&new->fa_lock){...-}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:994 [inline] ffff88801f8514b0 (&new->fa_lock){...-}-{2:2}, at: kill_fasync+0x196/0x4d0 fs/fcntl.c:1015 and this task is already holding: ffff8880590eb028 (&client->buffer_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] ffff8880590eb028 (&client->buffer_lock){..-.}-{2:2}, at: evdev_pass_values+0xee/0xad0 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: (&client->buffer_lock){..-.}-{2:2} ... which became SOFTIRQ-irq-safe at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261 evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159 input_event_dispose+0x3fc/0x650 drivers/input/input.c:385 input_handle_event+0x97d/0xb00 drivers/input/input.c:402 input_event+0xa0/0xd0 drivers/input/input.c:431 hidinput_hid_event+0x13de/0x1d30 drivers/hid/hid-input.c:1706 hid_process_event+0x433/0x580 drivers/hid/hid-core.c:1544 hid_process_report drivers/hid/hid-core.c:1692 [inline] hid_report_raw_event+0xfd5/0x17e0 drivers/hid/hid-core.c:2019 hid_input_report+0x420/0x4e0 drivers/hid/hid-core.c:2087 hid_irq_in+0x45c/0x690 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x371/0x530 drivers/usb/core/hcd.c:1675 dummy_timer+0x8ad/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] __orc_find arch/x86/kernel/unwind_orc.c:52 [inline] orc_find arch/x86/kernel/unwind_orc.c:178 [inline] unwind_next_frame+0x4a2/0x2220 arch/x86/kernel/unwind_orc.c:448 __unwind_start+0x59d/0x720 arch/x86/kernel/unwind_orc.c:717 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674 tomoyo_realpath_from_path+0x59f/0x5d0 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x29f/0x710 security/tomoyo/file.c:822 security_inode_getattr+0xcf/0x120 security/security.c:1361 vfs_getattr+0x26/0x360 fs/stat.c:158 vfs_statx+0x194/0x4b0 fs/stat.c:233 vfs_fstatat fs/stat.c:267 [inline] __do_sys_newfstatat fs/stat.c:437 [inline] __se_sys_newfstatat fs/stat.c:431 [inline] __x64_sys_newfstatat+0x151/0x1e0 fs/stat.c:431 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd to a SOFTIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2c6/0xb80 kernel/exit.c:1602 kernel_wait+0xe5/0x230 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 other info that might help us debug this: Chain exists of: &client->buffer_lock --> &new->fa_lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&client->buffer_lock); lock(&new->fa_lock); lock(&client->buffer_lock); *** DEADLOCK *** 7 locks held by syz-executor.1/18046: #0: ffff888145be1110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_write+0x26d/0x7c0 drivers/input/evdev.c:513 #1: ffff8881462e3230 (&dev->event_lock#2){-.-.}-{2:2}, at: input_inject_event+0xc1/0x330 drivers/input/input.c:456 #2: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #2: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #2: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: input_inject_event+0xd1/0x330 drivers/input/input.c:458 #3: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #3: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #3: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: input_pass_values+0xa3/0x12a0 drivers/input/input.c:151 #4: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #4: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #4: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: evdev_events+0x6b/0x2f0 drivers/input/evdev.c:298 #5: ffff8880590eb028 (&client->buffer_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #5: ffff8880590eb028 (&client->buffer_lock){..-.}-{2:2}, at: evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261 #6: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #6: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #6: ffffffff8d12a980 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x51/0x4d0 fs/fcntl.c:1014 the dependencies between SOFTIRQ-irq-safe lock and the holding lock: -> (&client->buffer_lock){..-.}-{2:2} { IN-SOFTIRQ-W at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] evdev_pass_values+0xee/0xad0 drivers/input/evdev.c:261 evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159 input_event_dispose+0x3fc/0x650 drivers/input/input.c:385 input_handle_event+0x97d/0xb00 drivers/input/input.c:402 input_event+0xa0/0xd0 drivers/input/input.c:431 hidinput_hid_event+0x13de/0x1d30 drivers/hid/hid-input.c:1706 hid_process_event+0x433/0x580 drivers/hid/hid-core.c:1544 hid_process_report drivers/hid/hid-core.c:1692 [inline] hid_report_raw_event+0xfd5/0x17e0 drivers/hid/hid-core.c:2019 hid_input_report+0x420/0x4e0 drivers/hid/hid-core.c:2087 hid_irq_in+0x45c/0x690 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x371/0x530 drivers/usb/core/hcd.c:1675 dummy_timer+0x8ad/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] __orc_find arch/x86/kernel/unwind_orc.c:52 [inline] orc_find arch/x86/kernel/unwind_orc.c:178 [inline] unwind_next_frame+0x4a2/0x2220 arch/x86/kernel/unwind_orc.c:448 __unwind_start+0x59d/0x720 arch/x86/kernel/unwind_orc.c:717 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674 tomoyo_realpath_from_path+0x59f/0x5d0 security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_perm+0x29f/0x710 security/tomoyo/file.c:822 security_inode_getattr+0xcf/0x120 security/security.c:1361 vfs_getattr+0x26/0x360 fs/stat.c:158 vfs_statx+0x194/0x4b0 fs/stat.c:233 vfs_fstatat fs/stat.c:267 [inline] __do_sys_newfstatat fs/stat.c:437 [inline] __se_sys_newfstatat fs/stat.c:431 [inline] __x64_sys_newfstatat+0x151/0x1e0 fs/stat.c:431 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL USE at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] evdev_fetch_next_event drivers/input/evdev.c:545 [inline] evdev_read+0x532/0xe00 drivers/input/evdev.c:586 do_iter_read+0x4fc/0xc70 fs/read_write.c:798 vfs_readv fs/read_write.c:916 [inline] do_readv+0x26b/0x460 fs/read_write.c:953 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] evdev_open.__key.25+0x0/0x20 the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2c6/0xb80 kernel/exit.c:1602 kernel_wait+0xe5/0x230 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 SOFTIRQ-ON-R at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2c6/0xb80 kernel/exit.c:1602 kernel_wait+0xe5/0x230 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 INITIAL USE at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326 copy_process+0x24b6/0x4060 kernel/fork.c:2401 kernel_clone+0x222/0x920 kernel/fork.c:2682 user_mode_thread+0x12e/0x190 kernel/fork.c:2758 rest_init+0x23/0x300 init/main.c:697 start_kernel+0x0/0x53f init/main.c:892 start_kernel+0x496/0x53f init/main.c:1139 secondary_startup_64_no_verify+0xcf/0xdb INITIAL READ USE at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x2c6/0xb80 kernel/exit.c:1602 kernel_wait+0xe5/0x230 kernel/exit.c:1792 call_usermodehelper_exec_sync kernel/umh.c:140 [inline] call_usermodehelper_exec_work+0xb5/0x220 kernel/umh.c:167 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 } ... key at: [] tasklist_lock+0x18/0x40 ... acquired at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 send_sigio+0xf8/0x360 fs/fcntl.c:790 dnotify_handle_event+0x138/0x440 fs/notify/dnotify/dnotify.c:115 fsnotify_handle_inode_event fs/notify/fsnotify.c:264 [inline] fsnotify_handle_event fs/notify/fsnotify.c:316 [inline] send_to_group fs/notify/fsnotify.c:364 [inline] fsnotify+0x1c13/0x2470 fs/notify/fsnotify.c:570 fsnotify_parent include/linux/fsnotify.h:80 [inline] fsnotify_file include/linux/fsnotify.h:99 [inline] fsnotify_access include/linux/fsnotify.h:309 [inline] do_iter_read+0xa19/0xc70 fs/read_write.c:801 vfs_readv fs/read_write.c:916 [inline] do_preadv+0x20e/0x350 fs/read_write.c:1008 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&f->f_owner.lock){...-}-{2:2} { IN-SOFTIRQ-R at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 send_sigurg+0x25/0x3b0 fs/fcntl.c:815 sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3362 tcp_check_urg+0x202/0x740 net/ipv4/tcp_input.c:5637 tcp_urg+0x154/0x440 net/ipv4/tcp_input.c:5678 tcp_rcv_established+0xe58/0x1f00 net/ipv4/tcp_input.c:6025 tcp_v6_do_rcv+0x53c/0x1270 net/ipv6/tcp_ipv6.c:1489 tcp_v6_rcv+0x234e/0x2b60 net/ipv6/tcp_ipv6.c:1753 ip6_protocol_deliver_rcu+0xaf7/0x1300 net/ipv6/ip6_input.c:438 ip6_input_finish+0x183/0x2c0 net/ipv6/ip6_input.c:483 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 __netif_receive_skb_one_core net/core/dev.c:5528 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642 process_backlog+0x381/0x760 net/core/dev.c:5970 __napi_poll+0xc7/0x470 net/core/dev.c:6537 napi_poll net/core/dev.c:6604 [inline] net_rx_action+0x70f/0xeb0 net/core/dev.c:6718 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 orc_find arch/x86/kernel/unwind_orc.c:168 [inline] unwind_next_frame+0x1ed/0x2220 arch/x86/kernel/unwind_orc.c:448 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486 call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL USE at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326 f_modown+0x38/0x340 fs/fcntl.c:91 __f_setown fs/fcntl.c:110 [inline] f_setown+0x14c/0x200 fs/fcntl.c:138 do_fcntl+0x128/0x1510 fs/fcntl.c:375 __do_sys_fcntl fs/fcntl.c:452 [inline] __se_sys_fcntl+0xd5/0x1b0 fs/fcntl.c:437 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 send_sigurg+0x25/0x3b0 fs/fcntl.c:815 sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3362 tcp_check_urg+0x202/0x740 net/ipv4/tcp_input.c:5637 tcp_urg+0x154/0x440 net/ipv4/tcp_input.c:5678 tcp_rcv_established+0xe58/0x1f00 net/ipv4/tcp_input.c:6025 tcp_v6_do_rcv+0x53c/0x1270 net/ipv6/tcp_ipv6.c:1489 sk_backlog_rcv include/net/sock.h:1117 [inline] __release_sock+0x198/0x4b0 net/core/sock.c:2935 release_sock+0x5d/0x1c0 net/core/sock.c:3499 sk_stream_wait_memory+0x725/0xef0 net/core/stream.c:145 tcp_sendmsg_locked+0x17f5/0x4100 net/ipv4/tcp.c:1451 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1489 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] __sys_sendto+0x480/0x600 net/socket.c:2148 __do_sys_sendto net/socket.c:2160 [inline] __se_sys_sendto net/socket.c:2156 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2156 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] __alloc_file.__key+0x0/0x10 ... acquired at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 send_sigio+0x2f/0x360 fs/fcntl.c:776 kill_fasync_rcu fs/fcntl.c:1001 [inline] kill_fasync+0x232/0x4d0 fs/fcntl.c:1015 sock_wake_async+0x145/0x170 sk_wake_async+0x186/0x280 include/net/sock.h:2581 sock_def_readable+0x1a7/0x280 net/core/sock.c:3306 unix_dgram_sendmsg+0x1539/0x2050 net/unix/af_unix.c:2079 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&new->fa_lock){...-}-{2:2} { IN-SOFTIRQ-R at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:994 [inline] kill_fasync+0x196/0x4d0 fs/fcntl.c:1015 sock_wake_async+0x145/0x170 sk_wake_async+0x186/0x280 include/net/sock.h:2581 sock_def_readable+0x1a7/0x280 net/core/sock.c:3306 tcp_data_queue+0x21c5/0x6fd0 net/ipv4/tcp_input.c:5102 tcp_rcv_state_process+0x2682/0x4510 net/ipv4/tcp_input.c:6704 tcp_v6_do_rcv+0x91c/0x1270 net/ipv6/tcp_ipv6.c:1514 tcp_v6_rcv+0x234e/0x2b60 net/ipv6/tcp_ipv6.c:1753 ip6_protocol_deliver_rcu+0xaf7/0x1300 net/ipv6/ip6_input.c:438 ip6_input_finish+0x183/0x2c0 net/ipv6/ip6_input.c:483 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 __netif_receive_skb_one_core net/core/dev.c:5528 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642 process_backlog+0x381/0x760 net/core/dev.c:5970 __napi_poll+0xc7/0x470 net/core/dev.c:6537 napi_poll net/core/dev.c:6604 [inline] net_rx_action+0x70f/0xeb0 net/core/dev.c:6718 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934 smpboot_thread_fn+0x52c/0xa30 kernel/smpboot.c:164 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 INITIAL USE at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:326 fasync_remove_entry+0xfb/0x1d0 fs/fcntl.c:871 sock_fasync+0x86/0xf0 net/socket.c:1425 __fput+0x70d/0x890 fs/file_table.c:317 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:994 [inline] kill_fasync+0x196/0x4d0 fs/fcntl.c:1015 sock_wake_async+0x145/0x170 sk_wake_async+0x186/0x280 include/net/sock.h:2581 sock_def_readable+0x1a7/0x280 net/core/sock.c:3306 unix_dgram_sendmsg+0x1539/0x2050 net/unix/af_unix.c:2079 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1143 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7ae/0xba0 fs/read_write.c:584 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] fasync_insert_entry.__key+0x0/0x20 ... acquired at: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:994 [inline] kill_fasync+0x196/0x4d0 fs/fcntl.c:1015 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278 evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159 input_event_dispose+0x366/0x650 drivers/input/input.c:374 input_handle_event+0x97d/0xb00 drivers/input/input.c:402 input_inject_event+0x224/0x330 drivers/input/input.c:461 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x2d9/0xba0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd stack backtrace: CPU: 0 PID: 18046 Comm: syz-executor.1 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_bad_irq_dependency kernel/locking/lockdep.c:2604 [inline] check_irq_usage kernel/locking/lockdep.c:2843 [inline] check_prev_add kernel/locking/lockdep.c:3094 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x4d16/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236 kill_fasync_rcu fs/fcntl.c:994 [inline] kill_fasync+0x196/0x4d0 fs/fcntl.c:1015 __pass_event drivers/input/evdev.c:240 [inline] evdev_pass_values+0x586/0xad0 drivers/input/evdev.c:278 evdev_events+0x1be/0x2f0 drivers/input/evdev.c:306 input_to_handler drivers/input/input.c:127 [inline] input_pass_values+0x8e0/0x12a0 drivers/input/input.c:159 input_event_dispose+0x366/0x650 drivers/input/input.c:374 input_handle_event+0x97d/0xb00 drivers/input/input.c:402 input_inject_event+0x224/0x330 drivers/input/input.c:461 evdev_write+0x668/0x7c0 drivers/input/evdev.c:530 vfs_write+0x2d9/0xba0 fs/read_write.c:582 ksys_write+0x19c/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f137407de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1374d960c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f13741ac050 RCX: 00007f137407de69 RDX: 0000000000002250 RSI: 0000000020000040 RDI: 0000000000000007 RBP: 00007f13740ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f13741ac050 R15: 00007ffd847f9968