================================================================== BUG: KCSAN: data-race in queue_access_lock / snd_seq_check_queue read to 0xffff8880b4fc98a4 of 1 bytes by interrupt on cpu 1: snd_seq_check_queue+0x59/0x200 sound/core/seq/seq_queue.c:247 snd_seq_timer_interrupt+0x243/0x280 sound/core/seq/seq_timer.c:158 snd_timer_process_callbacks+0x1e4/0x220 sound/core/timer.c:750 snd_timer_interrupt sound/core/timer.c:873 [inline] snd_timer_interrupt+0x483/0x930 sound/core/timer.c:794 snd_hrtimer_callback+0x18f/0x260 sound/core/hrtimer.c:50 __run_hrtimer kernel/time/hrtimer.c:1517 [inline] __hrtimer_run_queues+0x274/0x5f0 kernel/time/hrtimer.c:1579 hrtimer_interrupt+0x22a/0x480 kernel/time/hrtimer.c:1641 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0xdc/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 __sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:274 tomoyo_domain_quota_is_ok+0x234/0x2b0 security/tomoyo/util.c:1069 tomoyo_supervisor+0x22b/0xd20 security/tomoyo/common.c:2087 tomoyo_audit_net_log security/tomoyo/network.c:367 [inline] tomoyo_audit_inet_log+0x14d/0x1b0 security/tomoyo/network.c:393 tomoyo_inet_entry security/tomoyo/network.c:484 [inline] tomoyo_check_inet_address security/tomoyo/network.c:532 [inline] tomoyo_check_inet_address+0x32f/0x360 security/tomoyo/network.c:501 tomoyo_socket_connect_permission+0x16e/0x220 security/tomoyo/network.c:710 tomoyo_socket_connect+0x2f/0x50 security/tomoyo/tomoyo.c:456 security_socket_connect+0x6d/0xa0 security/security.c:1998 __sys_connect_file+0x90/0x100 net/socket.c:1840 __sys_connect+0x121/0x150 net/socket.c:1861 __do_sys_connect net/socket.c:1872 [inline] __se_sys_connect net/socket.c:1869 [inline] __x64_sys_connect+0x4c/0x60 net/socket.c:1869 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8880b4fc98a4 of 1 bytes by task 11420 on cpu 0: queue_access_lock+0x89/0xc0 sound/core/seq/seq_queue.c:356 snd_seq_control_queue+0x77/0x350 sound/core/seq/seq_queue.c:719 event_input_timer+0x2f/0x50 sound/core/seq/seq_system.c:103 snd_seq_deliver_single_event.constprop.0+0x3e8/0x4d0 sound/core/seq/seq_clientmgr.c:638 snd_seq_deliver_event+0x2e9/0x4c0 sound/core/seq/seq_clientmgr.c:839 snd_seq_dispatch_event+0xa1/0x340 sound/core/seq/seq_clientmgr.c:913 snd_seq_check_queue+0xeb/0x200 sound/core/seq/seq_queue.c:262 snd_seq_enqueue_event+0x163/0x2b0 sound/core/seq/seq_queue.c:330 snd_seq_client_enqueue_event.constprop.0+0x187/0x2a0 sound/core/seq/seq_clientmgr.c:974 snd_seq_write+0x23f/0x4d0 sound/core/seq/seq_clientmgr.c:1093 __vfs_write+0x67/0xc0 fs/read_write.c:494 vfs_write fs/read_write.c:558 [inline] vfs_write+0x18a/0x390 fs/read_write.c:542 ksys_write+0x17b/0x1b0 fs/read_write.c:611 __do_sys_write fs/read_write.c:623 [inline] __se_sys_write fs/read_write.c:620 [inline] __x64_sys_write+0x4c/0x60 fs/read_write.c:620 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11420 Comm: syz-executor.5 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================