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Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | possible deadlock in snd_timer_notify fs | 119 | 1064d | 1171d | 20/28 | fixed on 2021/11/10 00:50 |
===================================================== WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected 5.19.0-syzkaller-02858-ge2b542100719 #0 Not tainted ----------------------------------------------------- syz-executor.2/19041 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: ffffffff8ba0a098 (tasklist_lock){.+.+}-{2:2}, at: send_sigio+0xab/0x370 fs/fcntl.c:791 and this task is already holding: ffff888071ae9530 (&f->f_owner.lock){...-}-{2:2}, at: send_sigio+0x24/0x370 fs/fcntl.c:777 which would create a new lock dependency: (&f->f_owner.lock){...-}-{2:2} -> (tasklist_lock){.+.+}-{2:2} but this new dependency connects a SOFTIRQ-irq-safe lock: (&timer->lock){..-.}-{2:2} ... which became SOFTIRQ-irq-safe at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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_stop+0x195/0x1f0 sound/core/pcm_native.c:1512 snd_pcm_action_single sound/core/pcm_native.c:1283 [inline] snd_pcm_drain_done+0xdc/0x120 sound/core/pcm_native.c:1550 snd_pcm_update_state+0x43b/0x540 sound/core/pcm_lib.c:191 snd_pcm_update_hw_ptr0+0xa75/0x1a50 sound/core/pcm_lib.c:465 snd_pcm_period_elapsed_under_stream_lock+0x15a/0x230 sound/core/pcm_lib.c:1817 snd_pcm_period_elapsed+0x28/0x50 sound/core/pcm_lib.c:1849 loopback_jiffies_timer_function+0x1c4/0x240 sound/drivers/aloop.c:668 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __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+0x16/0x20 arch/x86/include/asm/idtentry.h:649 kasan_check_range+0xe/0x180 mm/kasan/generic.c:188 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] folio_test_swapcache include/linux/page-flags.h:563 [inline] folio_mapping+0x125/0x220 mm/util.c:803 __folio_cancel_dirty+0x1e/0x3d0 mm/page-writeback.c:2791 folio_cancel_dirty include/linux/pagemap.h:1068 [inline] truncate_cleanup_folio+0x203/0x3b0 mm/truncate.c:186 truncate_inode_folio+0x40/0x70 mm/truncate.c:195 shmem_undo_range+0x3fa/0x1560 mm/shmem.c:952 shmem_truncate_range mm/shmem.c:1044 [inline] shmem_evict_inode+0x3c6/0xc20 mm/shmem.c:1133 evict+0x2ed/0x6b0 fs/inode.c:664 iput_final fs/inode.c:1744 [inline] iput.part.0+0x562/0x820 fs/inode.c:1770 iput+0x58/0x70 fs/inode.c:1760 do_unlinkat+0x41b/0x650 fs/namei.c:4267 __do_sys_unlink fs/namei.c:4308 [inline] __se_sys_unlink fs/namei.c:4306 [inline] __x64_sys_unlink+0xc6/0x110 fs/namei.c:4306 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+0x63/0xcd to a SOFTIRQ-irq-unsafe lock: (tasklist_lock){.+.+}-{2:2} ... which became SOFTIRQ-irq-unsafe at: ... lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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:306 other info that might help us debug this: Chain exists of: &timer->lock --> &f->f_owner.lock --> tasklist_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(tasklist_lock); local_irq_disable(); lock(&timer->lock); lock(&f->f_owner.lock); <Interrupt> lock(&timer->lock); *** DEADLOCK *** 7 locks held by syz-executor.2/19041: #0: ffff8880433d0468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock_nested fs/pipe.c:82 [inline] #0: ffff8880433d0468 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock+0x5a/0x70 fs/pipe.c:90 #1: ffff8880281ac0f0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1677 [inline] #1: ffff8880281ac0f0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_splice_read+0x108/0x8b0 net/ipv4/tcp.c:788 #2: ffffffff8bd87300 (rcu_read_lock){....}-{1:2}, at: sock_def_readable+0x0/0x4e0 net/core/sock.c:2234 #3: ffffffff8bd87300 (rcu_read_lock){....}-{1:2}, at: rcu_read_unlock include/linux/rcupdate.h:735 [inline] #3: ffffffff8bd87300 (rcu_read_lock){....}-{1:2}, at: sock_def_readable+0x2aa/0x4e0 net/core/sock.c:3220 #4: ffffffff8bd87300 (rcu_read_lock){....}-{1:2}, at: kill_fasync+0x41/0x470 fs/fcntl.c:1014 #5: ffff88801fd0d558 (&new->fa_lock){....}-{2:2}, at: kill_fasync_rcu fs/fcntl.c:995 [inline] #5: ffff88801fd0d558 (&new->fa_lock){....}-{2:2}, at: kill_fasync fs/fcntl.c:1016 [inline] #5: ffff88801fd0d558 (&new->fa_lock){....}-{2:2}, at: kill_fasync+0x136/0x470 fs/fcntl.c:1009 #6: ffff888071ae9530 (&f->f_owner.lock){...-}-{2:2}, at: send_sigio+0x24/0x370 fs/fcntl.c:777 the dependencies between SOFTIRQ-irq-safe lock and the holding lock: -> (&timer->lock){..-.}-{2:2} { IN-SOFTIRQ-W at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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_stop+0x195/0x1f0 sound/core/pcm_native.c:1512 snd_pcm_action_single sound/core/pcm_native.c:1283 [inline] snd_pcm_drain_done+0xdc/0x120 sound/core/pcm_native.c:1550 snd_pcm_update_state+0x43b/0x540 sound/core/pcm_lib.c:191 snd_pcm_update_hw_ptr0+0xa75/0x1a50 sound/core/pcm_lib.c:465 snd_pcm_period_elapsed_under_stream_lock+0x15a/0x230 sound/core/pcm_lib.c:1817 snd_pcm_period_elapsed+0x28/0x50 sound/core/pcm_lib.c:1849 loopback_jiffies_timer_function+0x1c4/0x240 sound/drivers/aloop.c:668 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __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+0x16/0x20 arch/x86/include/asm/idtentry.h:649 kasan_check_range+0xe/0x180 mm/kasan/generic.c:188 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] folio_test_swapcache include/linux/page-flags.h:563 [inline] folio_mapping+0x125/0x220 mm/util.c:803 __folio_cancel_dirty+0x1e/0x3d0 mm/page-writeback.c:2791 folio_cancel_dirty include/linux/pagemap.h:1068 [inline] truncate_cleanup_folio+0x203/0x3b0 mm/truncate.c:186 truncate_inode_folio+0x40/0x70 mm/truncate.c:195 shmem_undo_range+0x3fa/0x1560 mm/shmem.c:952 shmem_truncate_range mm/shmem.c:1044 [inline] shmem_evict_inode+0x3c6/0xc20 mm/shmem.c:1133 evict+0x2ed/0x6b0 fs/inode.c:664 iput_final fs/inode.c:1744 [inline] iput.part.0+0x562/0x820 fs/inode.c:1770 iput+0x58/0x70 fs/inode.c:1760 do_unlinkat+0x41b/0x650 fs/namei.c:4267 __do_sys_unlink fs/namei.c:4308 [inline] __se_sys_unlink fs/namei.c:4306 [inline] __x64_sys_unlink+0xc6/0x110 fs/namei.c:4306 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+0x63/0xcd INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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+0x179c/0x1e10 sound/core/pcm_lib.c:2238 snd_pcm_oss_read3+0x1c4/0x400 sound/core/oss/pcm_oss.c:1292 io_capture_transfer+0x27e/0x330 sound/core/oss/io.c:73 snd_pcm_plug_read_transfer+0x1a4/0x2e0 sound/core/oss/pcm_plugin.c:663 snd_pcm_oss_read2+0x1db/0x3f0 sound/core/oss/pcm_oss.c:1493 snd_pcm_oss_read1 sound/core/oss/pcm_oss.c:1550 [inline] snd_pcm_oss_read+0x620/0x7a0 sound/core/oss/pcm_oss.c:2788 vfs_read+0x1ef/0x5d0 fs/read_write.c:480 ksys_read+0x127/0x250 fs/read_write.c:620 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+0x63/0xcd } ... key at: [<ffffffff912cfbc0>] __key.10+0x0/0x40 -> (&new->fa_lock){....}-{2:2} { INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_write_lock_irq include/linux/rwlock_api_smp.h:195 [inline] _raw_write_lock_irq+0x32/0x50 kernel/locking/spinlock.c:326 fasync_remove_entry+0xb6/0x1e0 fs/fcntl.c:872 fasync_helper+0x9e/0xb0 fs/fcntl.c:975 __fput+0x834/0x9d0 fs/file_table.c:314 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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+0x63/0xcd } ... key at: [<ffffffff90fd56e0>] __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+0x63/0xcd -> (&f->f_owner.lock){...-}-{2:2} { IN-SOFTIRQ-R at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x45/0x90 kernel/locking/spinlock.c:236 send_sigurg+0x1e/0xae0 fs/fcntl.c:816 sk_send_sigurg+0x76/0x310 net/core/sock.c:3275 tcp_check_urg net/ipv4/tcp_input.c:5604 [inline] tcp_urg+0x38e/0xb40 net/ipv4/tcp_input.c:5645 tcp_rcv_established+0x81d/0x20e0 net/ipv4/tcp_input.c:5992 tcp_v6_do_rcv+0x810/0x13c0 net/ipv6/tcp_ipv6.c:1476 tcp_v6_rcv+0x2d9b/0x37f0 net/ipv6/tcp_ipv6.c:1735 ip6_protocol_deliver_rcu+0x2f4/0x1950 net/ipv6/ip6_input.c:439 ip6_input_finish+0x14c/0x2c0 net/ipv6/ip6_input.c:484 NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:493 dst_input include/net/dst.h:461 [inline] ip6_rcv_finish net/ipv6/ip6_input.c:79 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ipv6_rcv+0x24c/0x380 net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5484 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5598 process_backlog+0x3a0/0x7c0 net/core/dev.c:5926 __napi_poll+0xb3/0x6e0 net/core/dev.c:6492 napi_poll net/core/dev.c:6559 [inline] net_rx_action+0x9c1/0xd90 net/core/dev.c:6670 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571 do_softirq.part.0+0xde/0x130 kernel/softirq.c:472 do_softirq kernel/softirq.c:464 [inline] __local_bh_enable_ip+0x102/0x120 kernel/softirq.c:396 sk_stream_wait_memory+0x608/0xed0 net/core/stream.c:145 tcp_sendmsg_locked+0x94b/0x3180 net/ipv4/tcp.c:1422 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1460 inet6_sendmsg+0x99/0xe0 net/ipv6/af_inet6.c:652 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 __sys_sendto+0x236/0x340 net/socket.c:2120 __do_sys_sendto net/socket.c:2132 [inline] __se_sys_sendto net/socket.c:2128 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2128 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+0x63/0xcd INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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+0x63/0xcd INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_read_lock_irq include/linux/rwlock_api_smp.h:169 [inline] _raw_read_lock_irq+0x63/0x80 kernel/locking/spinlock.c:244 f_getown+0x23/0x2a0 fs/fcntl.c:153 do_fcntl+0xbc4/0x1040 fs/fcntl.c:372 __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+0x63/0xcd } ... key at: [<ffffffff90fd4900>] __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+0x24/0x370 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+0x63/0xcd the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: -> (tasklist_lock){.+.+}-{2:2} { HARDIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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:306 SOFTIRQ-ON-R at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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:306 INITIAL USE at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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+0x449d/0x70a0 kernel/fork.c:2378 kernel_clone+0xe7/0xab0 kernel/fork.c:2659 user_mode_thread+0xad/0xe0 kernel/fork.c:2728 rest_init+0x23/0x270 init/main.c:692 arch_call_rest_init+0xf/0x14 init/main.c:883 start_kernel+0x46e/0x48f init/main.c:1138 secondary_startup_64_no_verify+0xce/0xdb INITIAL READ USE at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __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:306 } ... key at: [<ffffffff8ba0a098>] tasklist_lock+0x18/0x40 ... acquired at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228 send_sigio+0xab/0x370 fs/fcntl.c:791 kill_fasync_rcu fs/fcntl.c:1002 [inline] kill_fasync fs/fcntl.c:1016 [inline] kill_fasync+0x1f8/0x470 fs/fcntl.c:1009 sock_wake_async+0xd2/0x160 net/socket.c:1419 sk_wake_async include/net/sock.h:2466 [inline] sk_wake_async include/net/sock.h:2462 [inline] sock_def_readable+0x349/0x4e0 net/core/sock.c:3219 tcp_data_ready+0x106/0x520 net/ipv4/tcp_input.c:4993 tcp_data_queue+0x1bb2/0x4c60 net/ipv4/tcp_input.c:5067 tcp_rcv_established+0x82f/0x20e0 net/ipv4/tcp_input.c:5995 tcp_v6_do_rcv+0x810/0x13c0 net/ipv6/tcp_ipv6.c:1476 sk_backlog_rcv include/net/sock.h:1047 [inline] __release_sock+0x134/0x3b0 net/core/sock.c:2849 release_sock+0x54/0x1b0 net/core/sock.c:3404 tcp_splice_read+0x508/0x8b0 net/ipv4/tcp.c:836 sock_splice_read+0xb6/0x120 net/socket.c:1066 do_splice_to+0x1b9/0x240 fs/splice.c:796 splice_file_to_pipe+0x100/0x120 fs/splice.c:1018 do_splice+0x1549/0x1920 fs/splice.c:1104 __do_splice+0x134/0x250 fs/splice.c:1144 __do_sys_splice fs/splice.c:1350 [inline] __se_sys_splice fs/splice.c:1332 [inline] __x64_sys_splice+0x198/0x250 fs/splice.c:1332 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+0x63/0xcd stack backtrace: CPU: 0 PID: 19041 Comm: syz-executor.2 Not tainted 5.19.0-syzkaller-02858-ge2b542100719 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_bad_irq_dependency kernel/locking/lockdep.c:2609 [inline] check_irq_usage.cold+0x4c1/0x6b0 kernel/locking/lockdep.c:2848 check_prev_add kernel/locking/lockdep.c:3099 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain kernel/locking/lockdep.c:3829 [inline] __lock_acquire+0x2ad2/0x5660 kernel/locking/lockdep.c:5053 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_read_lock include/linux/rwlock_api_smp.h:150 [inline] _raw_read_lock+0x5b/0x70 kernel/locking/spinlock.c:228 send_sigio+0xab/0x370 fs/fcntl.c:791 kill_fasync_rcu fs/fcntl.c:1002 [inline] kill_fasync fs/fcntl.c:1016 [inline] kill_fasync+0x1f8/0x470 fs/fcntl.c:1009 sock_wake_async+0xd2/0x160 net/socket.c:1419 sk_wake_async include/net/sock.h:2466 [inline] sk_wake_async include/net/sock.h:2462 [inline] sock_def_readable+0x349/0x4e0 net/core/sock.c:3219 tcp_data_ready+0x106/0x520 net/ipv4/tcp_input.c:4993 tcp_data_queue+0x1bb2/0x4c60 net/ipv4/tcp_input.c:5067 tcp_rcv_established+0x82f/0x20e0 net/ipv4/tcp_input.c:5995 tcp_v6_do_rcv+0x810/0x13c0 net/ipv6/tcp_ipv6.c:1476 sk_backlog_rcv include/net/sock.h:1047 [inline] __release_sock+0x134/0x3b0 net/core/sock.c:2849 release_sock+0x54/0x1b0 net/core/sock.c:3404 tcp_splice_read+0x508/0x8b0 net/ipv4/tcp.c:836 sock_splice_read+0xb6/0x120 net/socket.c:1066 do_splice_to+0x1b9/0x240 fs/splice.c:796 splice_file_to_pipe+0x100/0x120 fs/splice.c:1018 do_splice+0x1549/0x1920 fs/splice.c:1104 __do_splice+0x134/0x250 fs/splice.c:1144 __do_sys_splice fs/splice.c:1350 [inline] __se_sys_splice fs/splice.c:1332 [inline] __x64_sys_splice+0x198/0x250 fs/splice.c:1332 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+0x63/0xcd RIP: 0033:0x7f63b7689209 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:00007f63b8708168 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007f63b779c030 RCX: 00007f63b7689209 RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007f63b76e3161 R08: 000800000406f40a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f63b7ccfb1f R14: 00007f63b8708300 R15: 0000000000022000 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/08/03 17:25 | upstream | e2b542100719 | 1c9013ac | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/07/30 18:24 | upstream | 620725263f42 | fef302b1 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/07/30 06:00 | upstream | e65c6a46df94 | fef302b1 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/07/13 07:55 | upstream | b047602d579b | 5d921b08 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in snd_timer_notify | |||
2022/07/12 01:06 | upstream | 5a29232d870d | da3d6955 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/07/10 22:02 | upstream | d9919d43cbf6 | b5765a15 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/07/08 13:06 | upstream | e8a4e1c1bb69 | 8442e655 | .config | console log | report | info | ci-qemu-upstream | possible deadlock in snd_timer_notify | |||
2022/07/06 18:34 | upstream | 9f09069cde34 | bff65f44 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/07/04 20:06 | upstream | c1084b6c5620 | bff65f44 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in snd_timer_notify | |||
2022/07/04 16:00 | upstream | 88084a3df167 | bff65f44 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in snd_timer_notify | |||
2022/07/04 03:53 | upstream | 88084a3df167 | 1434eec0 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in snd_timer_notify | |||
2022/07/03 14:32 | upstream | 69cb6c6556ad | 1434eec0 | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in snd_timer_notify | |||
2022/07/03 02:56 | upstream | 34074da5424c | 1434eec0 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in snd_timer_notify | |||
2022/06/21 23:56 | upstream | ca1fdab7fd27 | 0fc5c330 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/06/20 16:57 | upstream | 78ca55889a54 | 8d15e28d | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/06/16 23:28 | upstream | 48a23ec6ff2b | 1719ee24 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/06/14 21:15 | upstream | 24625f7d91fb | 127d1faf | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/06/12 02:13 | upstream | 7a68065eb9cd | 0d5abf15 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/06/10 02:44 | upstream | 874c8ca1e60b | 0d5abf15 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/31 08:16 | upstream | 8ab2afa23bd1 | af70c3a9 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/28 14:16 | upstream | 9d004b2f4fea | a46af346 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/27 11:24 | upstream | 7e284070abe5 | 116e7a7b | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/26 23:15 | upstream | babf0bb978e3 | 3037caa9 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/05/26 11:32 | upstream | 7e062cda7d90 | 3037caa9 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/25 12:46 | upstream | fdaf9a5840ac | 647c0e27 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/24 01:22 | upstream | 1e57930e9f40 | e7f9308d | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/23 02:04 | upstream | 4b0986a3613c | 7268fa62 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/05/22 13:45 | upstream | eaea45fc0e7b | 7268fa62 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/05/22 12:29 | upstream | eaea45fc0e7b | 7268fa62 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/22 10:14 | upstream | eaea45fc0e7b | 7268fa62 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/05/21 04:48 | upstream | 3b5e1590a267 | 7268fa62 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/20 17:01 | upstream | 3d7285a335ed | bd37ad7e | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/05/20 15:25 | upstream | 3d7285a335ed | cb1ac2e7 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/05/20 02:19 | upstream | b015dcd62b86 | cb1ac2e7 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/18 02:20 | upstream | 210e04ff7681 | 744a39e2 | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in snd_timer_notify | |||
2022/05/18 00:57 | upstream | 210e04ff7681 | 744a39e2 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in snd_timer_notify | |||
2022/05/17 10:17 | upstream | 42226c989789 | 744a39e2 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/15 16:16 | upstream | bc403203d65a | 744a39e2 | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in snd_timer_notify | |||
2022/05/15 15:02 | upstream | bc403203d65a | 744a39e2 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | possible deadlock in snd_timer_notify | |||
2022/05/12 00:24 | upstream | feb9c5e19e91 | beb0b407 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/09 01:25 | upstream | c5eb0a61238d | e60b1103 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/04 16:54 | upstream | 107c948d1d3e | dc9e5259 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/03 05:40 | upstream | 9050ba3a61a4 | 2df221f6 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/02 12:13 | upstream | 672c0c517342 | 2df221f6 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/02 02:57 | upstream | 672c0c517342 | 2df221f6 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2022/05/01 04:31 | upstream | 57ae8a492116 | 2df221f6 | .config | console log | report | info | ci-upstream-kasan-gce | possible deadlock in snd_timer_notify | |||
2021/11/11 11:45 | upstream | debe436e77c7 | 75b04091 | .config | console log | report | info | ci-upstream-kasan-gce-root | possible deadlock in snd_timer_notify | |||
2021/11/10 19:08 | upstream | 89d714ab6043 | 75b04091 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | possible deadlock in snd_timer_notify | |||
2022/07/13 12:18 | linux-next | cb71b93c2dc3 | 5d921b08 | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | possible deadlock in snd_timer_notify |