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================================================================== BUG: KCSAN: data-race in __mnt_want_write_file / propagate_one write to 0xffff88812a9c6370 of 4 bytes by task 10351 on cpu 1: propagate_one+0x32d/0x400 fs/pnode.c:267 propagate_mnt+0x2f8/0x640 fs/pnode.c:319 attach_recursive_mnt+0x519/0x1210 fs/namespace.c:2129 graft_tree fs/namespace.c:2237 [inline] do_add_mount fs/namespace.c:2784 [inline] do_new_mount_fc fs/namespace.c:2823 [inline] do_new_mount fs/namespace.c:2877 [inline] path_mount+0x1b49/0x1c70 fs/namespace.c:3192 do_mount fs/namespace.c:3205 [inline] __do_sys_mount fs/namespace.c:3413 [inline] __se_sys_mount+0x126/0x180 fs/namespace.c:3390 __x64_sys_mount+0x63/0x70 fs/namespace.c:3390 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88812a9c6370 of 4 bytes by task 8346 on cpu 0: __mnt_is_readonly fs/namespace.c:248 [inline] mnt_clone_write fs/namespace.c:377 [inline] __mnt_want_write_file+0x5c/0x110 fs/namespace.c:398 file_update_time+0x1c3/0x3f0 fs/inode.c:1987 file_modified+0x62/0x80 fs/inode.c:2013 ext4_write_checks fs/ext4/file.c:249 [inline] ext4_buffered_write_iter+0x1d0/0x3b0 fs/ext4/file.c:265 ext4_file_write_iter+0x57b/0x1000 fs/ext4/file.c:498 call_write_iter include/linux/fs.h:1872 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0x665/0x6f0 fs/read_write.c:578 ksys_write+0xce/0x180 fs/read_write.c:631 __do_sys_write fs/read_write.c:643 [inline] __se_sys_write fs/read_write.c:640 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:640 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: 0 PID: 8346 Comm: rs:main Q:Reg Not tainted 5.8.0-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/08/09 21:28 | upstream | 9420f1ce0186 | 70301872 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/08/07 16:05 | upstream | 86cfccb66937 | 28ac5c9e | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/08/05 03:01 | upstream | c0842fbc1b18 | 02034dac | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/07/31 10:50 | upstream | e2c46b5762c6 | 8df85ed9 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/07/25 21:21 | upstream | 23ee3e4e5bd2 | 1f7cc1ca | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/07/10 20:00 | upstream | 42f82040ee66 | 56d01184 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/07/08 11:46 | upstream | dcde237b9b0e | 5962a2dc | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/07/01 01:50 | upstream | 7c30b859a947 | c0383ebe | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/06/19 15:54 | upstream | 5e857ce6eae7 | 123cf502 | .config | console log | report | ci2-upstream-kcsan-gce |