======================================================== WARNING: possible irq lock inversion dependency detected 5.19.0-rc6-syzkaller-00111-gb047602d579b #0 Not tainted -------------------------------------------------------- syz-executor.4/29151 just changed the state of lock: ffff8880266e8910 (&group->lock){..-.}-{2:2}, at: snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1848 but this lock took another, SOFTIRQ-READ-unsafe lock in the past: (tasklist_lock){.+.+}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &group->lock --> &timer->lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&group->lock); lock(&timer->lock); lock(&group->lock); *** DEADLOCK *** 1 lock held by syz-executor.4/29151: #0: ffff88807e18c4d8 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1113 [inline] #0: ffff88807e18c4d8 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_get_active_substream+0x13a/0x280 sound/core/oss/pcm_oss.c:1133 the shortest dependencies between 2nd lock and 1st lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x224/0x9d0 kernel/exit.c:1508 kernel_wait+0xe4/0x230 kernel/exit.c:1698 call_usermodehelper_exec_sync kernel/umh.c:139 [inline] call_usermodehelper_exec_work+0xb4/0x220 kernel/umh.c:166 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 SOFTIRQ-ON-R at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x224/0x9d0 kernel/exit.c:1508 kernel_wait+0xe4/0x230 kernel/exit.c:1698 call_usermodehelper_exec_sync kernel/umh.c:139 [inline] call_usermodehelper_exec_work+0xb4/0x220 kernel/umh.c:166 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 INITIAL USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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+0x2414/0x3fa0 kernel/fork.c:2374 kernel_clone+0x22f/0x7a0 kernel/fork.c:2655 user_mode_thread+0x12d/0x190 kernel/fork.c:2724 rest_init+0x21/0x270 init/main.c:691 start_kernel+0x0/0x55b init/main.c:882 start_kernel+0x4ac/0x55b init/main.c:1137 secondary_startup_64_no_verify+0xcf/0xdb INITIAL READ USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 do_wait+0x224/0x9d0 kernel/exit.c:1508 kernel_wait+0xe4/0x230 kernel/exit.c:1698 call_usermodehelper_exec_sync kernel/umh.c:139 [inline] call_usermodehelper_exec_work+0xb4/0x220 kernel/umh.c:166 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 } ... key at: [] tasklist_lock+0x18/0x40 ... acquired at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x32/0x40 kernel/locking/spinlock.c:228 send_sigio+0xbe/0x300 fs/fcntl.c:791 kill_fasync_rcu fs/fcntl.c:1002 [inline] kill_fasync+0x1e4/0x430 fs/fcntl.c:1016 sock_wake_async+0x130/0x150 rcu_read_unlock include/linux/rcupdate.h:724 [inline] sk_wake_async+0x12e/0x200 include/net/sock.h:2467 sock_def_readable+0x152/0x200 net/core/sock.c:3219 unix_dgram_sendmsg+0x1553/0x1fc0 net/unix/af_unix.c:2028 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x597/0x8e0 net/socket.c:2488 ___sys_sendmsg net/socket.c:2542 [inline] __sys_sendmmsg+0xa6f/0xd20 net/socket.c:2628 __do_sys_sendmmsg net/socket.c:2657 [inline] __se_sys_sendmmsg net/socket.c:2654 [inline] __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2654 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&f->f_owner.lock){...-}-{2:2} { IN-SOFTIRQ-R at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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+0x25/0x370 fs/fcntl.c:816 sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3275 tcp_check_urg+0x1f6/0x720 net/ipv4/tcp_input.c:5596 tcp_urg+0x152/0x440 net/ipv4/tcp_input.c:5637 tcp_rcv_established+0x9f0/0x1a10 net/ipv4/tcp_input.c:5984 tcp_v4_do_rcv+0x479/0xac0 net/ipv4/tcp_ipv4.c:1659 tcp_v4_rcv+0x2ac3/0x3370 net/ipv4/tcp_ipv4.c:2076 ip_protocol_deliver_rcu+0x391/0x750 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x269/0x480 net/ipv4/ip_input.c:233 __netif_receive_skb_one_core net/core/dev.c:5480 [inline] __netif_receive_skb+0x1c5/0x500 net/core/dev.c:5594 process_backlog+0x4f8/0x8b0 net/core/dev.c:5922 __napi_poll+0xbe/0x4b0 net/core/dev.c:6488 napi_poll net/core/dev.c:6555 [inline] net_rx_action+0x76c/0x10b0 net/core/dev.c:6666 __do_softirq+0x382/0x793 kernel/softirq.c:571 run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934 smpboot_thread_fn+0x533/0x9d0 kernel/smpboot.c:164 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 INITIAL USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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:90 __f_setown fs/fcntl.c:109 [inline] f_setown+0x113/0x1a0 fs/fcntl.c:137 sock_ioctl+0x591/0x770 net/socket.c:1229 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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+0x25/0x370 fs/fcntl.c:816 sk_send_sigurg+0x6a/0xb0 net/core/sock.c:3275 tcp_check_urg+0x1f6/0x720 net/ipv4/tcp_input.c:5596 tcp_urg+0x152/0x440 net/ipv4/tcp_input.c:5637 tcp_rcv_established+0x9f0/0x1a10 net/ipv4/tcp_input.c:5984 tcp_v4_do_rcv+0x479/0xac0 net/ipv4/tcp_ipv4.c:1659 tcp_v4_rcv+0x2ac3/0x3370 net/ipv4/tcp_ipv4.c:2076 ip_protocol_deliver_rcu+0x391/0x750 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x269/0x480 net/ipv4/ip_input.c:233 __netif_receive_skb_one_core net/core/dev.c:5480 [inline] __netif_receive_skb+0x1c5/0x500 net/core/dev.c:5594 process_backlog+0x4f8/0x8b0 net/core/dev.c:5922 __napi_poll+0xbe/0x4b0 net/core/dev.c:6488 napi_poll net/core/dev.c:6555 [inline] net_rx_action+0x76c/0x10b0 net/core/dev.c:6666 __do_softirq+0x382/0x793 kernel/softirq.c:571 run_ksoftirqd+0xc1/0x120 kernel/softirq.c:934 smpboot_thread_fn+0x533/0x9d0 kernel/smpboot.c:164 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 } ... key at: [] __alloc_file.__key+0x0/0x10 ... acquired at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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/0x300 fs/fcntl.c:777 kill_fasync_rcu fs/fcntl.c:1002 [inline] kill_fasync+0x1e4/0x430 fs/fcntl.c:1016 snd_timer_user_ccallback+0x370/0x540 sound/core/timer.c:1386 snd_timer_notify1+0x1ad/0x350 sound/core/timer.c:516 snd_timer_start1+0x53d/0x640 sound/core/timer.c:578 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_user_start sound/core/timer.c:1984 [inline] __snd_timer_user_ioctl+0xae7/0x54c0 sound/core/timer.c:2107 snd_timer_user_ioctl+0x5d/0x80 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&new->fa_lock){....}-{2:2} { INITIAL USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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+0xff/0x1d0 fs/fcntl.c:872 __fput+0x6cd/0x820 fs/file_table.c:314 task_work_run+0x146/0x1c0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x134/0x160 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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:995 [inline] kill_fasync+0x13b/0x430 fs/fcntl.c:1016 snd_timer_user_ccallback+0x370/0x540 sound/core/timer.c:1386 snd_timer_notify1+0x1ad/0x350 sound/core/timer.c:516 snd_timer_start1+0x53d/0x640 sound/core/timer.c:578 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_user_start sound/core/timer.c:1984 [inline] __snd_timer_user_ioctl+0xae7/0x54c0 sound/core/timer.c:2107 snd_timer_user_ioctl+0x5d/0x80 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] fasync_insert_entry.__key+0x0/0x20 ... acquired at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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:995 [inline] kill_fasync+0x13b/0x430 fs/fcntl.c:1016 snd_timer_user_ccallback+0x370/0x540 sound/core/timer.c:1386 snd_timer_notify1+0x1ad/0x350 sound/core/timer.c:516 snd_timer_start1+0x53d/0x640 sound/core/timer.c:578 snd_timer_start sound/core/timer.c:696 [inline] snd_timer_user_start sound/core/timer.c:1984 [inline] __snd_timer_user_ioctl+0xae7/0x54c0 sound/core/timer.c:2107 snd_timer_user_ioctl+0x5d/0x80 sound/core/timer.c:2128 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&timer->lock){....}-{2:2} { INITIAL USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 snd_timer_notify+0x105/0x3e0 sound/core/timer.c:1086 snd_pcm_timer_notify sound/core/pcm_native.c:608 [inline] snd_pcm_post_stop sound/core/pcm_native.c:1512 [inline] snd_pcm_action sound/core/pcm_native.c:1364 [inline] snd_pcm_stop+0x3b8/0x4c0 sound/core/pcm_native.c:1535 snd_pcm_drop+0x431/0x580 sound/core/pcm_native.c:2218 snd_pcm_oss_sync+0x254/0xf00 sound/core/oss/pcm_oss.c:1746 snd_pcm_oss_release+0x119/0x270 sound/core/oss/pcm_oss.c:2590 __fput+0x3b9/0x820 fs/file_table.c:317 task_work_run+0x146/0x1c0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x134/0x160 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] snd_timer_new.__key+0x0/0x20 ... acquired at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 snd_timer_notify+0x105/0x3e0 sound/core/timer.c:1086 snd_pcm_timer_notify sound/core/pcm_native.c:608 [inline] snd_pcm_post_stop sound/core/pcm_native.c:1512 [inline] snd_pcm_action sound/core/pcm_native.c:1364 [inline] snd_pcm_stop+0x3b8/0x4c0 sound/core/pcm_native.c:1535 snd_pcm_drop+0x431/0x580 sound/core/pcm_native.c:2218 snd_pcm_oss_sync+0x254/0xf00 sound/core/oss/pcm_oss.c:1746 snd_pcm_oss_release+0x119/0x270 sound/core/oss/pcm_oss.c:2590 __fput+0x3b9/0x820 fs/file_table.c:317 task_work_run+0x146/0x1c0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x134/0x160 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> (&group->lock){..-.}-{2:2} { IN-SOFTIRQ-W at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1848 dummy_hrtimer_callback+0x87/0x190 sound/drivers/dummy.c:377 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x1a1/0x580 kernel/time/hrtimer.c:1766 __do_softirq+0x382/0x793 kernel/softirq.c:571 __irq_exit_rcu+0xec/0x170 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 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:399 [inline] snd_pcm_group_unlock_irq sound/core/pcm_native.c:98 [inline] snd_pcm_stream_unlock_irq sound/core/pcm_native.c:159 [inline] snd_pcm_drop+0x4ab/0x580 sound/core/pcm_native.c:2220 snd_pcm_oss_change_params_locked+0x1f11/0x3c80 sound/core/oss/pcm_oss.c:974 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1116 [inline] snd_pcm_oss_get_active_substream+0x1c6/0x280 sound/core/oss/pcm_oss.c:1133 snd_pcm_oss_get_rate sound/core/oss/pcm_oss.c:1790 [inline] snd_pcm_oss_set_rate+0x27d/0x600 sound/core/oss/pcm_oss.c:1782 snd_pcm_oss_ioctl+0xc34/0xe90 sound/core/oss/pcm_oss.c:2638 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL USE at: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __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:374 [inline] snd_pcm_group_lock_irq sound/core/pcm_native.c:97 [inline] snd_pcm_stream_lock_irq sound/core/pcm_native.c:136 [inline] snd_pcm_hw_params+0x164/0x1860 sound/core/pcm_native.c:726 snd_pcm_oss_change_params_locked+0x1f21/0x3c80 sound/core/oss/pcm_oss.c:976 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1116 [inline] snd_pcm_oss_make_ready sound/core/oss/pcm_oss.c:1175 [inline] snd_pcm_oss_sync+0x46f/0xf00 sound/core/oss/pcm_oss.c:1742 snd_pcm_oss_release+0x119/0x270 sound/core/oss/pcm_oss.c:2590 __fput+0x3b9/0x820 fs/file_table.c:317 task_work_run+0x146/0x1c0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x134/0x160 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x63/0xcd } ... key at: [] snd_pcm_group_init.__key+0x0/0x20 ... acquired at: mark_lock+0x21c/0x350 kernel/locking/lockdep.c:4632 __lock_acquire+0xb81/0x1f80 kernel/locking/lockdep.c:5007 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1848 dummy_hrtimer_callback+0x87/0x190 sound/drivers/dummy.c:377 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x1a1/0x580 kernel/time/hrtimer.c:1766 __do_softirq+0x382/0x793 kernel/softirq.c:571 __irq_exit_rcu+0xec/0x170 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 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] _raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:399 [inline] snd_pcm_group_unlock_irq sound/core/pcm_native.c:98 [inline] snd_pcm_stream_unlock_irq sound/core/pcm_native.c:159 [inline] snd_pcm_drop+0x4ab/0x580 sound/core/pcm_native.c:2220 snd_pcm_oss_change_params_locked+0x1f11/0x3c80 sound/core/oss/pcm_oss.c:974 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1116 [inline] snd_pcm_oss_get_active_substream+0x1c6/0x280 sound/core/oss/pcm_oss.c:1133 snd_pcm_oss_get_rate sound/core/oss/pcm_oss.c:1790 [inline] snd_pcm_oss_set_rate+0x27d/0x600 sound/core/oss/pcm_oss.c:1782 snd_pcm_oss_ioctl+0xc34/0xe90 sound/core/oss/pcm_oss.c:2638 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd stack backtrace: CPU: 1 PID: 29151 Comm: syz-executor.4 Not tainted 5.19.0-rc6-syzkaller-00111-gb047602d579b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_irq_inversion_bug+0x58c/0x6f0 kernel/locking/lockdep.c:4040 mark_lock_irq+0x9d2/0xf00 kernel/locking/lockdep.c:4203 mark_lock+0x21c/0x350 kernel/locking/lockdep.c:4632 __lock_acquire+0xb81/0x1f80 kernel/locking/lockdep.c:5007 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 snd_pcm_period_elapsed+0x2c/0x210 sound/core/pcm_lib.c:1848 dummy_hrtimer_callback+0x87/0x190 sound/drivers/dummy.c:377 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x1a1/0x580 kernel/time/hrtimer.c:1766 __do_softirq+0x382/0x793 kernel/softirq.c:571 __irq_exit_rcu+0xec/0x170 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 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202 Code: d1 0f f7 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ae aa 33 f7 48 89 df e8 b6 1b 35 f7 e8 31 fa 59 f7 fb bf 01 00 00 00 c6 cc 27 f7 65 8b 05 c7 25 ce 75 85 c0 74 02 5b c3 e8 9c 0f cc RSP: 0018:ffffc9000fe7fa28 EFLAGS: 00000282 RAX: 65e0ef23506ad200 RBX: ffff88814a1948f8 RCX: ffffffff816836e8 RDX: dffffc0000000000 RSI: ffffffff8a8d2bc0 RDI: 0000000000000001 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1fa9822 R10: fffffbfff1fa9822 R11: 1ffffffff1fa9821 R12: ffff88814a1948f8 R13: ffff88814a1948c0 R14: 1ffff11029432918 R15: ffff88807e18c100 spin_unlock_irq include/linux/spinlock.h:399 [inline] snd_pcm_group_unlock_irq sound/core/pcm_native.c:98 [inline] snd_pcm_stream_unlock_irq sound/core/pcm_native.c:159 [inline] snd_pcm_drop+0x4ab/0x580 sound/core/pcm_native.c:2220 snd_pcm_oss_change_params_locked+0x1f11/0x3c80 sound/core/oss/pcm_oss.c:974 snd_pcm_oss_change_params sound/core/oss/pcm_oss.c:1116 [inline] snd_pcm_oss_get_active_substream+0x1c6/0x280 sound/core/oss/pcm_oss.c:1133 snd_pcm_oss_get_rate sound/core/oss/pcm_oss.c:1790 [inline] snd_pcm_oss_set_rate+0x27d/0x600 sound/core/oss/pcm_oss.c:1782 snd_pcm_oss_ioctl+0xc34/0xe90 sound/core/oss/pcm_oss.c:2638 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f42c5689109 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f42c68c1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f42c579bf60 RCX: 00007f42c5689109 RDX: 0000000020000080 RSI: 00000000c0045002 RDI: 0000000000000003 RBP: 00007f42c56e30ed R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd0b699b6f R14: 00007f42c68c1300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: d1 0f rorl (%rdi) 2: f7 ff idiv %edi 4: 90 nop 5: 53 push %rbx 6: 48 89 fb mov %rdi,%rbx 9: 48 83 c7 18 add $0x18,%rdi d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi 12: e8 ae aa 33 f7 callq 0xf733aac5 17: 48 89 df mov %rbx,%rdi 1a: e8 b6 1b 35 f7 callq 0xf7351bd5 1f: e8 31 fa 59 f7 callq 0xf759fa55 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 c6 cc 27 f7 callq 0xf727ccf5 <-- trapping instruction 2f: 65 8b 05 c7 25 ce 75 mov %gs:0x75ce25c7(%rip),%eax # 0x75ce25fd 36: 85 c0 test %eax,%eax 38: 74 02 je 0x3c 3a: 5b pop %rbx 3b: c3 retq 3c: e8 .byte 0xe8 3d: 9c pushfq 3e: 0f cc bswap %esp