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================================================================== BUG: KCSAN: data-race in snd_rawmidi_transmit / snd_rawmidi_write write to 0xffff8880387bc878 of 8 bytes by task 2925 on cpu 0: __snd_rawmidi_transmit_ack sound/core/rawmidi.c:1267 [inline] snd_rawmidi_transmit+0x2b8/0x3b0 sound/core/rawmidi.c:1326 snd_vmidi_output_work+0xf1/0x200 sound/core/seq/seq_virmidi.c:144 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x616/0xa70 kernel/workqueue.c:2421 kthread+0x20b/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff8880387bc878 of 8 bytes by task 7824 on cpu 1: snd_rawmidi_write+0x5ef/0x720 sound/core/rawmidi.c:1489 vfs_write+0x223/0x7e0 fs/read_write.c:603 ksys_write+0xce/0x180 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:667 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7824 Comm: syz-executor.2 Tainted: G W 5.12.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/03/19 19:23 | upstream | 8b12a62a4e3e | 2af9d324 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in snd_rawmidi_transmit / snd_rawmidi_write | |||
2021/03/14 23:52 | upstream | 75013c6c52d8 | cc1cff8f | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in snd_rawmidi_transmit / snd_rawmidi_write | |||
2021/03/13 09:32 | upstream | f296bfd5cd04 | 4a003785 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in snd_rawmidi_transmit / snd_rawmidi_write | |||
2021/03/11 03:16 | upstream | 05a59d79793d | 764067f3 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in snd_rawmidi_transmit / snd_rawmidi_write |