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================================================================== BUG: KCSAN: data-race in futex_wait_queue_me / proc_task_name write to 0xffff8881157f1024 of 4 bytes by task 18260 on cpu 1: freezer_do_not_count include/linux/freezer.h:109 [inline] freezable_schedule include/linux/freezer.h:171 [inline] futex_wait_queue_me+0x17d/0x290 kernel/futex.c:2627 futex_wait+0x19b/0x3f0 kernel/futex.c:2733 do_futex+0xe9/0x18d0 kernel/futex.c:3644 __do_sys_futex kernel/futex.c:3705 [inline] __se_sys_futex kernel/futex.c:3673 [inline] __x64_sys_futex+0x2cd/0x3f0 kernel/futex.c:3673 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8881157f1024 of 4 bytes by task 18267 on cpu 0: proc_task_name+0x41/0x2a0 fs/proc/array.c:106 proc_pid_status+0x70/0x1000 fs/proc/array.c:410 proc_single_show+0x89/0xe0 fs/proc/base.c:756 seq_read+0x350/0x960 fs/seq_file.c:229 do_loop_readv_writev fs/read_write.c:714 [inline] do_loop_readv_writev fs/read_write.c:701 [inline] do_iter_read+0x357/0x3d0 fs/read_write.c:935 vfs_readv+0x9c/0xf0 fs/read_write.c:997 do_preadv+0x131/0x1d0 fs/read_write.c:1089 __do_sys_preadv fs/read_write.c:1139 [inline] __se_sys_preadv fs/read_write.c:1134 [inline] __x64_sys_preadv+0x61/0x80 fs/read_write.c:1134 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 18267 Comm: syz-executor.4 Not tainted 5.4.0-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/30 22:36 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | a76bf83f | .config | console log | report | ci2-upstream-kcsan-gce |