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================================================================== BUG: KCSAN: data-race in snd_seq_oss_writeq_sync / snd_seq_oss_writeq_sync write to 0xffff88801caaf510 of 4 bytes by task 5980 on cpu 0: snd_seq_oss_writeq_sync+0x300/0x340 sound/core/seq/oss/seq_oss_writeq.c:112 snd_seq_oss_ioctl+0x701/0xa70 sound/core/seq/oss/seq_oss_ioctl.c:86 odev_ioctl+0x58/0xc0 sound/core/seq/oss/seq_oss.c:180 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88801caaf510 of 4 bytes by task 5984 on cpu 1: snd_seq_oss_writeq_sync+0x207/0x340 sound/core/seq/oss/seq_oss_writeq.c:109 snd_seq_oss_ioctl+0x701/0xa70 sound/core/seq/oss/seq_oss_ioctl.c:86 odev_ioctl+0x58/0xc0 sound/core/seq/oss/seq_oss.c:180 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 5984 Comm: syz-executor.4 Not tainted 5.10.0-rc5-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/11/26 12:09 | upstream | fa02fcd94b0c | 2f1cec62 | .config | console log | report | info | ci2-upstream-kcsan-gce |