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KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata

Status: auto-closed as invalid on 2021/04/16 10:25
Subsystems: ext4
[Documentation on labels]
First crash: 1149d, last: 1112d

Sample crash report:
==================================================================
BUG: KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata

write to 0xffff88810745c878 of 8 bytes by task 4803 on cpu 1:
 __jbd2_journal_file_buffer+0x18d/0x380 fs/jbd2/transaction.c:2518
 __jbd2_journal_refile_buffer+0x155/0x230 fs/jbd2/transaction.c:2612
 jbd2_journal_commit_transaction+0x24b6/0x3290 fs/jbd2/commit.c:1084
 kjournald2+0x263/0x480 fs/jbd2/journal.c:213
 kthread+0x20b/0x230 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

read to 0xffff88810745c878 of 8 bytes by task 18257 on cpu 0:
 jbd2_journal_dirty_metadata+0xe3/0x670 fs/jbd2/transaction.c:1477
 __ext4_handle_dirty_metadata+0xc6/0x590 fs/ext4/ext4_jbd2.c:331
 ext4_free_blocks+0x167d/0x1be0 fs/ext4/mballoc.c:5485
 ext4_ext_try_to_merge_up fs/ext4/extents.c:1830 [inline]
 ext4_ext_try_to_merge+0x2fa/0x310 fs/ext4/extents.c:1857
 ext4_swap_extents+0x102d/0x13a0 fs/ext4/extents.c:5693
 move_extent_per_page+0x143c/0x16c0 fs/ext4/move_extent.c:339
 ext4_move_extents+0xaac/0xc00 fs/ext4/move_extent.c:673
 __ext4_ioctl fs/ext4/ioctl.c:992 [inline]
 ext4_ioctl+0x218f/0x35e0 fs/ext4/ioctl.c:1332
 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+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 18257 Comm: syz-executor.5 Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (41):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/03/12 10:17 upstream f78d76e72a46 429d8a6b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/11 19:56 upstream 28806e4d9b97 c2ca1f2a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/11 04:24 upstream a74e6a014c9d c2ca1f2a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/10 06:28 upstream 05a59d79793d 26967e35 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/09 17:27 upstream 144c79ef3353 26967e35 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/07 20:34 upstream a38fd8748464 09fbf400 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/07 08:45 upstream a38fd8748464 c599ed12 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/06 06:25 upstream a38fd8748464 e4b4d570 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/05 18:07 upstream 280d542f6ffa 4a024a9b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/05 06:02 upstream 280d542f6ffa 9d751681 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/04 20:36 upstream cee407c5cc42 f89ed068 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/04 17:14 upstream f69d02e37a85 f89ed068 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/04 07:29 upstream f69d02e37a85 d7e4e604 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/03/03 17:01 upstream f69d02e37a85 06ed56cd .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/24 06:36 upstream c03c21ba6f4e fcc6d71b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/22 14:27 upstream 31caf8b2a847 c26fb06b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/22 08:08 upstream 31caf8b2a847 a659b3f1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/21 04:51 upstream e767b3530acb 3e5ed8b4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/20 10:01 upstream f40ddce88593 3e5ed8b4 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/19 15:07 upstream f40ddce88593 f689d40a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/19 15:00 upstream f40ddce88593 f689d40a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/17 19:13 upstream f40ddce88593 14052202 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/14 11:35 upstream 358feceebbf6 98682e5e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/13 22:42 upstream ac30d8ce28d6 98682e5e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/13 08:54 upstream c6d8570e4d64 98682e5e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/12 19:15 upstream dcc0b49040c7 98682e5e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/12 07:13 upstream dcc0b49040c7 a5f86b15 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/11 18:17 upstream 291009f656e8 a5f86b15 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/10 21:49 upstream 291009f656e8 a52ee10a .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/08 21:24 upstream e0756cfc7d7c 2bd9619f .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/07 08:52 upstream 825b5991a46e 2ce644fc .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/06 23:18 upstream 964d069f93c4 0655e081 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/06 14:24 upstream 1e0d27fce010 0655e081 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/06 12:09 upstream 1e0d27fce010 0655e081 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/06 02:40 upstream 1e0d27fce010 23a562df .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/05 01:12 upstream 5c279c4cf206 23a562df .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/04 10:53 upstream 61556703b610 42b90a7c .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/04 10:18 upstream 61556703b610 624dad51 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/04 10:17 upstream 61556703b610 624dad51 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/03 20:48 upstream 3afe9076a7c1 624dad51 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
2021/02/02 22:42 upstream 3aaf0a27ffc2 624dad51 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __jbd2_journal_file_buffer / jbd2_journal_dirty_metadata
* Struck through repros no longer work on HEAD.