syzbot

 sign-in | mailing list | source | docs
🐞 Open [941] 🐞 Fixed [4026] 🐞 Invalid [8942] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes

possible deadlock in _snd_pcm_stream_lock_irqsave (3)

Status: upstream: reported C repro on 2021/11/10 17:00
Reported-by: syzbot+58740f570d9b0dacf2a3@syzkaller.appspotmail.com
First crash: 323d, last: 50d

Cause bisection: failed (bisect log)
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream possible deadlock in _snd_pcm_stream_lock_irqsave C done 997 713d 750d 17/24 fixed on 2020/11/16 12:12
upstream possible deadlock in _snd_pcm_stream_lock_irqsave (2) 120 324d 432d 22/24 fixed on 2021/11/10 00:50
Patch testing requests:
Created Duration User Patch Repo Result
2022/04/24 01:01 14m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ 13bc32bad705 OK

Sample crash report:
========================================================
WARNING: possible irq lock inversion dependency detected
5.19.0-rc3-syzkaller-00279-g8c23f235a6a8 #0 Not tainted
--------------------------------------------------------
swapper/1/0 just changed the state of lock:
ffff8880252a0110 (&group->lock){..-.}-{2:2}, at: _snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
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);
  <Interrupt>
    lock(&group->lock);

 *** DEADLOCK ***

no locks held by swapper/1/0.

the shortest dependencies between 2nd lock and 1st lock:
    -> (tasklist_lock){.+.+}-{2:2} {
       HARDIRQ-ON-R at:
                            lock_acquire kernel/locking/lockdep.c:5665 [inline]
                            lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                            __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                            _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
                            do_wait+0x284/0xce0 kernel/exit.c:1508
                            kernel_wait+0x9c/0x150 kernel/exit.c:1698
                            call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
                            call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
                            process_one_work+0x996/0x1610 kernel/workqueue.c:2289
                            worker_thread+0x665/0x1080 kernel/workqueue.c:2436
                            kthread+0x2e9/0x3a0 kernel/kthread.c:376
                            ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
       SOFTIRQ-ON-R at:
                            lock_acquire kernel/locking/lockdep.c:5665 [inline]
                            lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                            __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                            _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
                            do_wait+0x284/0xce0 kernel/exit.c:1508
                            kernel_wait+0x9c/0x150 kernel/exit.c:1698
                            call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
                            call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
                            process_one_work+0x996/0x1610 kernel/workqueue.c:2289
                            worker_thread+0x665/0x1080 kernel/workqueue.c:2436
                            kthread+0x2e9/0x3a0 kernel/kthread.c:376
                            ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
       INITIAL USE at:
                           lock_acquire kernel/locking/lockdep.c:5665 [inline]
                           lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                           __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                           _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326
                           copy_process+0x445e/0x7020 kernel/fork.c:2374
                           kernel_clone+0xe7/0xab0 kernel/fork.c:2655
                           user_mode_thread+0xad/0xe0 kernel/fork.c:2724
                           rest_init+0x23/0x270 init/main.c:691
                           arch_call_rest_init+0xf/0x14 init/main.c:882
                           start_kernel+0x46e/0x48f init/main.c:1137
                           secondary_startup_64_no_verify+0xce/0xdb
       INITIAL READ USE at:
                                lock_acquire kernel/locking/lockdep.c:5665 [inline]
                                lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                                __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
                                _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
                                do_wait+0x284/0xce0 kernel/exit.c:1508
                                kernel_wait+0x9c/0x150 kernel/exit.c:1698
                                call_usermodehelper_exec_sync kernel/umh.c:139 [inline]
                                call_usermodehelper_exec_work+0xf5/0x180 kernel/umh.c:166
                                process_one_work+0x996/0x1610 kernel/workqueue.c:2289
                                worker_thread+0x665/0x1080 kernel/workqueue.c:2436
                                kthread+0x2e9/0x3a0 kernel/kthread.c:376
                                ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
     }
     ... key      at: [<ffffffff8ba0a098>] tasklist_lock+0x18/0x40
     ... acquired at:
   __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline]
   _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228
   send_sigio+0xab/0x380 fs/fcntl.c:791
   dnotify_handle_event+0x148/0x280 fs/notify/dnotify/dnotify.c:115
   fsnotify_handle_inode_event.isra.0+0x22e/0x370 fs/notify/fsnotify.c:264
   fsnotify_handle_event fs/notify/fsnotify.c:316 [inline]
   send_to_group fs/notify/fsnotify.c:362 [inline]
   fsnotify+0xec5/0x13a0 fs/notify/fsnotify.c:567
   fsnotify_name include/linux/fsnotify.h:36 [inline]
   fsnotify_name include/linux/fsnotify.h:29 [inline]
   fsnotify_dirent include/linux/fsnotify.h:42 [inline]
   fsnotify_create include/linux/fsnotify.h:207 [inline]
   open_last_lookups fs/namei.c:3446 [inline]
   path_openat+0x1232/0x2910 fs/namei.c:3650
   do_filp_open+0x1aa/0x400 fs/namei.c:3680
   do_sys_openat2+0x16d/0x4c0 fs/open.c:1278
   do_sys_open fs/open.c:1294 [inline]
   __do_sys_creat fs/open.c:1370 [inline]
   __se_sys_creat fs/open.c:1364 [inline]
   __x64_sys_creat+0xc9/0x120 fs/open.c:1364
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x46/0xb0

   -> (&f->f_owner.lock){....}-{2:2} {
      INITIAL USE at:
                         lock_acquire kernel/locking/lockdep.c:5665 [inline]
                         lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                         __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline]
                         _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326
                         f_modown+0x2a/0x390 fs/fcntl.c:90
                         __f_setown fs/fcntl.c:109 [inline]
                         f_setown+0xd7/0x230 fs/fcntl.c:137
                         do_fcntl+0x6f1/0x1040 fs/fcntl.c:376
                         __do_sys_fcntl fs/fcntl.c:453 [inline]
                         __se_sys_fcntl fs/fcntl.c:438 [inline]
                         __x64_sys_fcntl+0x15f/0x1d0 fs/fcntl.c:438
                         do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                         do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
                         entry_SYSCALL_64_after_hwframe+0x46/0xb0
      INITIAL READ USE at:
                              lock_acquire kernel/locking/lockdep.c:5665 [inline]
                              lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                              __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
                              _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
                              send_sigio+0x24/0x380 fs/fcntl.c:777
                              kill_fasync_rcu fs/fcntl.c:1002 [inline]
                              kill_fasync fs/fcntl.c:1016 [inline]
                              kill_fasync+0x1f8/0x470 fs/fcntl.c:1009
                              snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386
                              snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516
                              snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578
                              snd_timer_start sound/core/timer.c:696 [inline]
                              snd_timer_start sound/core/timer.c:689 [inline]
                              snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984
                              __snd_timer_user_ioctl.isra.0+0xda4/0x2490 sound/core/timer.c:2107
                              snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128
                              vfs_ioctl fs/ioctl.c:51 [inline]
                              __do_sys_ioctl fs/ioctl.c:870 [inline]
                              __se_sys_ioctl fs/ioctl.c:856 [inline]
                              __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
                              do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                              do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
                              entry_SYSCALL_64_after_hwframe+0x46/0xb0
    }
    ... key      at: [<ffffffff90fc1700>] __key.5+0x0/0x40
    ... acquired at:
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
   _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
   send_sigio+0x24/0x380 fs/fcntl.c:777
   kill_fasync_rcu fs/fcntl.c:1002 [inline]
   kill_fasync fs/fcntl.c:1016 [inline]
   kill_fasync+0x1f8/0x470 fs/fcntl.c:1009
   snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386
   snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516
   snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578
   snd_timer_start sound/core/timer.c:696 [inline]
   snd_timer_start sound/core/timer.c:689 [inline]
   snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984
   __snd_timer_user_ioctl.isra.0+0xda4/0x2490 sound/core/timer.c:2107
   snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128
   vfs_ioctl fs/ioctl.c:51 [inline]
   __do_sys_ioctl fs/ioctl.c:870 [inline]
   __se_sys_ioctl fs/ioctl.c:856 [inline]
   __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x46/0xb0

  -> (&new->fa_lock){....}-{2:2} {
     INITIAL READ USE at:
                            lock_acquire kernel/locking/lockdep.c:5665 [inline]
                            lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                            __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
                            _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
                            kill_fasync_rcu fs/fcntl.c:995 [inline]
                            kill_fasync fs/fcntl.c:1016 [inline]
                            kill_fasync+0x136/0x470 fs/fcntl.c:1009
                            snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386
                            snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516
                            snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578
                            snd_timer_start sound/core/timer.c:696 [inline]
                            snd_timer_start sound/core/timer.c:689 [inline]
                            snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984
                            __snd_timer_user_ioctl.isra.0+0xda4/0x2490 sound/core/timer.c:2107
                            snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128
                            vfs_ioctl fs/ioctl.c:51 [inline]
                            __do_sys_ioctl fs/ioctl.c:870 [inline]
                            __se_sys_ioctl fs/ioctl.c:856 [inline]
                            __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
                            do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                            do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
                            entry_SYSCALL_64_after_hwframe+0x46/0xb0
   }
   ... key      at: [<ffffffff90fc24e0>] __key.0+0x0/0x40
   ... acquired at:
   __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
   _raw_read_lock_irqsave+0x70/0x90 kernel/locking/spinlock.c:236
   kill_fasync_rcu fs/fcntl.c:995 [inline]
   kill_fasync fs/fcntl.c:1016 [inline]
   kill_fasync+0x136/0x470 fs/fcntl.c:1009
   snd_timer_user_ccallback+0x298/0x330 sound/core/timer.c:1386
   snd_timer_notify1+0x11c/0x3b0 sound/core/timer.c:516
   snd_timer_start1+0x4d4/0x800 sound/core/timer.c:578
   snd_timer_start sound/core/timer.c:696 [inline]
   snd_timer_start sound/core/timer.c:689 [inline]
   snd_timer_user_start.isra.0+0x1e3/0x260 sound/core/timer.c:1984
   __snd_timer_user_ioctl.isra.0+0xda4/0x2490 sound/core/timer.c:2107
   snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128
   vfs_ioctl fs/ioctl.c:51 [inline]
   __do_sys_ioctl fs/ioctl.c:870 [inline]
   __se_sys_ioctl fs/ioctl.c:856 [inline]
   __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x46/0xb0

 -> (&timer->lock){....}-{2:2} {
    INITIAL USE at:
                     lock_acquire kernel/locking/lockdep.c:5665 [inline]
                     lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                     __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                     _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
                     snd_timer_resolution+0x55/0x100 sound/core/timer.c:489
                     snd_timer_user_params.isra.0+0x18e/0x8c0 sound/core/timer.c:1851
                     __snd_timer_user_ioctl.isra.0+0x101c/0x2490 sound/core/timer.c:2100
                     snd_timer_user_ioctl+0x77/0xb0 sound/core/timer.c:2128
                     vfs_ioctl fs/ioctl.c:51 [inline]
                     __do_sys_ioctl fs/ioctl.c:870 [inline]
                     __se_sys_ioctl fs/ioctl.c:856 [inline]
                     __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
                     do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                     do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
                     entry_SYSCALL_64_after_hwframe+0x46/0xb0
  }
  ... key      at: [<ffffffff912c0860>] __key.10+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:162
   snd_timer_notify sound/core/timer.c:1086 [inline]
   snd_timer_notify+0x10c/0x3d0 sound/core/timer.c:1073
   snd_pcm_timer_notify sound/core/pcm_native.c:608 [inline]
   snd_pcm_post_start+0x24a/0x310 sound/core/pcm_native.c:1451
   snd_pcm_action_single+0xf4/0x130 sound/core/pcm_native.c:1283
   snd_pcm_action+0x6e/0x90 sound/core/pcm_native.c:1364
   __snd_pcm_lib_xfer+0x14d0/0x1e10 sound/core/pcm_lib.c:2308
   snd_pcm_oss_write3+0x103/0x250 sound/core/oss/pcm_oss.c:1253
   snd_pcm_oss_write2+0x30e/0x3f0 sound/core/oss/pcm_oss.c:1393
   snd_pcm_oss_sync1+0x187/0x440 sound/core/oss/pcm_oss.c:1627
   snd_pcm_oss_sync+0x638/0x800 sound/core/oss/pcm_oss.c:1704
   snd_pcm_oss_release+0x276/0x300 sound/core/oss/pcm_oss.c:2590
   __fput+0x277/0x9d0 fs/file_table.c:317
   task_work_run+0xdd/0x1a0 kernel/task_work.c:177
   exit_task_work include/linux/task_work.h:38 [inline]
   do_exit+0xaff/0x2a00 kernel/exit.c:795
   do_group_exit+0xd2/0x2f0 kernel/exit.c:925
   __do_sys_exit_group kernel/exit.c:936 [inline]
   __se_sys_exit_group kernel/exit.c:934 [inline]
   __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:934
   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
   do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
   entry_SYSCALL_64_after_hwframe+0x46/0xb0

-> (&group->lock){..-.}-{2:2} {
   IN-SOFTIRQ-W at:
                    lock_acquire kernel/locking/lockdep.c:5665 [inline]
                    lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                    __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                    _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
                    _snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
                    snd_pcm_period_elapsed+0x1d/0x50 sound/core/pcm_lib.c:1848
                    dummy_hrtimer_callback+0x94/0x1b0 sound/drivers/dummy.c:377
                    __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
                    __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
                    hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
                    __do_softirq+0x29b/0x9c2 kernel/softirq.c:571
                    invoke_softirq kernel/softirq.c:445 [inline]
                    __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
                    irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
                    sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
                    asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
                    native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
                    arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
                    acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
                    acpi_idle_do_entry+0x1c9/0x240 drivers/acpi/processor_idle.c:554
                    acpi_idle_enter+0x369/0x510 drivers/acpi/processor_idle.c:691
                    cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
                    cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
                    call_cpuidle kernel/sched/idle.c:155 [inline]
                    cpuidle_idle_call kernel/sched/idle.c:236 [inline]
                    do_idle+0x3e8/0x590 kernel/sched/idle.c:303
                    cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400
                    start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:266
                    secondary_startup_64_no_verify+0xce/0xdb
   INITIAL USE at:
                   lock_acquire kernel/locking/lockdep.c:5665 [inline]
                   lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
                   __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
                   _raw_spin_lock_irq+0x32/0x50 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+0x14b/0x19f0 sound/core/pcm_native.c:726
                   snd_pcm_kernel_ioctl+0x164/0x310 sound/core/pcm_native.c:3435
                   snd_pcm_oss_change_params_locked+0x14e2/0x3a70 sound/core/oss/pcm_oss.c:976
                   snd_pcm_oss_make_ready_locked+0xb3/0x130 sound/core/oss/pcm_oss.c:1198
                   snd_pcm_oss_write1 sound/core/oss/pcm_oss.c:1416 [inline]
                   snd_pcm_oss_write+0x4ac/0x9c0 sound/core/oss/pcm_oss.c:2811
                   vfs_write+0x269/0xac0 fs/read_write.c:589
                   ksys_write+0x127/0x250 fs/read_write.c:644
                   do_syscall_x64 arch/x86/entry/common.c:50 [inline]
                   do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
                   entry_SYSCALL_64_after_hwframe+0x46/0xb0
 }
 ... key      at: [<ffffffff912c1040>] __key.8+0x0/0x40
 ... acquired at:
   mark_lock kernel/locking/lockdep.c:4596 [inline]
   mark_usage kernel/locking/lockdep.c:4527 [inline]
   __lock_acquire+0x11e7/0x5660 kernel/locking/lockdep.c:5007
   lock_acquire kernel/locking/lockdep.c:5665 [inline]
   lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
   _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
   _snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
   snd_pcm_period_elapsed+0x1d/0x50 sound/core/pcm_lib.c:1848
   dummy_hrtimer_callback+0x94/0x1b0 sound/drivers/dummy.c:377
   __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
   __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
   hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
   __do_softirq+0x29b/0x9c2 kernel/softirq.c:571
   invoke_softirq kernel/softirq.c:445 [inline]
   __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
   irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
   sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
   asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
   native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
   arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
   acpi_safe_halt drivers/acpi/processor_idle.c:111 [inline]
   acpi_idle_do_entry+0x1c9/0x240 drivers/acpi/processor_idle.c:554
   acpi_idle_enter+0x369/0x510 drivers/acpi/processor_idle.c:691
   cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
   cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
   call_cpuidle kernel/sched/idle.c:155 [inline]
   cpuidle_idle_call kernel/sched/idle.c:236 [inline]
   do_idle+0x3e8/0x590 kernel/sched/idle.c:303
   cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400
   start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:266
   secondary_startup_64_no_verify+0xce/0xdb


stack backtrace:
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.19.0-rc3-syzkaller-00279-g8c23f235a6a8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_irq_inversion_bug kernel/locking/lockdep.c:222 [inline]
 check_usage_forwards kernel/locking/lockdep.c:4071 [inline]
 mark_lock_irq kernel/locking/lockdep.c:4203 [inline]
 mark_lock.part.0.cold+0x86/0xd8 kernel/locking/lockdep.c:4632
 mark_lock kernel/locking/lockdep.c:4596 [inline]
 mark_usage kernel/locking/lockdep.c:4527 [inline]
 __lock_acquire+0x11e7/0x5660 kernel/locking/lockdep.c:5007
 lock_acquire kernel/locking/lockdep.c:5665 [inline]
 lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
 _snd_pcm_stream_lock_irqsave+0x9f/0xd0 sound/core/pcm_native.c:170
 snd_pcm_period_elapsed+0x1d/0x50 sound/core/pcm_lib.c:1848
 dummy_hrtimer_callback+0x94/0x1b0 sound/drivers/dummy.c:377
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline]
RIP: 0010:acpi_idle_do_entry+0x1c9/0x240 drivers/acpi/processor_idle.c:554
Code: 89 de e8 da 67 00 f8 84 db 75 98 e8 d1 6b 00 f8 e8 fc b9 06 f8 eb 0c e8 c5 6b 00 f8 0f 00 2d be 13 ba 00 e8 b9 6b 00 f8 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 04 68 00 f8 48 85 db
RSP: 0018:ffffc90000177d20 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888011a19d80 RSI: ffffffff8979fb47 RDI: 0000000000000000
RBP: ffff888140a1c064 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffff888140a1c000 R14: ffff888140a1c064 R15: ffff8881467e0004
 acpi_idle_enter+0x369/0x510 drivers/acpi/processor_idle.c:691
 cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:237
 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:351
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:236 [inline]
 do_idle+0x3e8/0x590 kernel/sched/idle.c:303
----------------
Code disassembly (best guess):
   0:	89 de                	mov    %ebx,%esi
   2:	e8 da 67 00 f8       	callq  0xf80067e1
   7:	84 db                	test   %bl,%bl
   9:	75 98                	jne    0xffffffa3
   b:	e8 d1 6b 00 f8       	callq  0xf8006be1
  10:	e8 fc b9 06 f8       	callq  0xf806ba11
  15:	eb 0c                	jmp    0x23
  17:	e8 c5 6b 00 f8       	callq  0xf8006be1
  1c:	0f 00 2d be 13 ba 00 	verw   0xba13be(%rip)        # 0xba13e1
  23:	e8 b9 6b 00 f8       	callq  0xf8006be1
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	9c                   	pushfq <-- trapping instruction
  2b:	5b                   	pop    %rbx
  2c:	81 e3 00 02 00 00    	and    $0x200,%ebx
  32:	fa                   	cli
  33:	31 ff                	xor    %edi,%edi
  35:	48 89 de             	mov    %rbx,%rsi
  38:	e8 04 68 00 f8       	callq  0xf8006841
  3d:	48 85 db             	test   %rbx,%rbx

Crashes (284):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2022/06/26 05:03 upstream 8c23f235a6a8 a371c43c .config log report syz C possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/04/23 22:51 upstream 13bc32bad705 131df97d .config log report syz C possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-linux-next-kasan-gce-root 2022/08/01 07:48 linux-next cb71b93c2dc3 fef302b1 .config log report syz C possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-linux-next-kasan-gce-root 2022/05/18 05:07 linux-next 3f7bdc402fb0 744a39e2 .config log report syz C possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-root 2022/08/06 20:12 upstream 200e340f2196 88e3a122 .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-root 2022/07/08 05:32 upstream e8a4e1c1bb69 bff65f44 .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/07/07 01:02 upstream 9f09069cde34 bff65f44 .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-selinux-root 2022/06/29 06:49 upstream 941e3e791269 496a8536 .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-root 2022/06/25 10:56 upstream 6a0a17e6c6d1 a371c43c .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/05/24 03:36 upstream 1e57930e9f40 e7f9308d .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/04/24 11:12 upstream 22da5264abf4 131df97d .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/04/21 19:06 upstream b253435746d9 2738b391 .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-root 2022/04/12 08:46 upstream ce522ba9ef7e af01ee7d .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2021/12/20 02:22 upstream a76c3d035872 44068e19 .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-linux-next-kasan-gce-root 2022/07/31 18:09 linux-next cb71b93c2dc3 fef302b1 .config log report syz possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/08/06 14:24 upstream 200e340f2196 88e3a122 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/07/26 21:10 upstream 5de64d44968e 279b89c2 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-root 2022/07/20 15:05 upstream ca85855bdcae 775344bc .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/07/18 12:37 upstream ff6992735ade ff988920 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-selinux-root 2022/07/11 13:39 upstream 32346491ddf2 da3d6955 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-selinux-root 2022/07/08 21:52 upstream a471da3100ef b5765a15 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-qemu-upstream 2022/07/08 11:33 upstream e8a4e1c1bb69 8442e655 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-qemu-upstream 2022/07/04 17:28 upstream 88084a3df167 bff65f44 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-qemu-upstream 2022/07/04 16:06 upstream 88084a3df167 bff65f44 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-qemu-upstream 2022/07/02 15:56 upstream 089866061428 1434eec0 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce 2022/06/22 23:32 upstream 3abc3ae553c7 912f5df7 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-root 2021/11/10 03:43 upstream cb690f5238d7 55fa030c .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/08/10 19:44 upstream 200e340f2196 a6201f11 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/08/09 18:16 upstream 200e340f2196 c2a623d6 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/08/09 02:36 upstream 200e340f2196 da700653 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/08/04 02:20 upstream 200e340f2196 1c9013ac .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/08/03 20:48 upstream e2b542100719 1c9013ac .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/08/02 15:56 upstream 9de1f9c8ca51 1c9013ac .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/08/02 01:05 upstream 9de1f9c8ca51 fef302b1 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/29 02:44 upstream 33ea1340bafe fb95c74d .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/28 22:06 upstream 33ea1340bafe fb95c74d .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/26 19:53 upstream e0dccc3b76fb 279b89c2 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/24 22:10 upstream af2c9ac24019 22343af4 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/23 17:25 upstream 70664fc10c0d 22343af4 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/23 00:40 upstream 4ba1329cbb94 22343af4 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/15 03:58 upstream 9bd572ec7a66 5d921b08 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/13 06:41 upstream b047602d579b d91dd8ea .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/12 20:56 upstream 72a8e05d4f66 d91dd8ea .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/12 15:55 upstream 5a29232d870d d91dd8ea .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/12 04:56 upstream 5a29232d870d da3d6955 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/11 11:34 upstream 32346491ddf2 da3d6955 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/11 02:12 upstream 5867f3b88bb5 b5765a15 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/10 00:14 upstream b1c428b6c368 b5765a15 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/09 14:11 upstream e5524c2a1fc4 b5765a15 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/04 13:35 upstream 88084a3df167 bff65f44 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/03 03:01 upstream 34074da5424c 1434eec0 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/07/01 00:14 upstream 1a0e93df1e10 1434eec0 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/30 22:07 upstream 1a0e93df1e10 1434eec0 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/29 19:28 upstream d9b2ba67917c 1434eec0 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/29 01:03 upstream 941e3e791269 496a8536 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/25 23:36 upstream 8c23f235a6a8 a371c43c .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/23 01:06 upstream 3abc3ae553c7 912f5df7 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/22 21:00 upstream 3abc3ae553c7 912f5df7 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/21 07:31 upstream 78ca55889a54 0fc5c330 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/20 19:09 upstream 78ca55889a54 8d15e28d .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/20 16:32 upstream 78ca55889a54 8d15e28d .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/20 07:06 upstream a111daf0c53a 8f633d84 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-kasan-gce-386 2022/06/18 09:48 upstream 4b35035bcf80 8f633d84 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
ci-upstream-linux-next-kasan-gce-root 2022/07/08 17:35 linux-next cb71b93c2dc3 b5765a15 .config log report info possible deadlock in _snd_pcm_stream_lock_irqsave
* Struck through repros no longer work on HEAD.