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KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark (4)

Status: auto-closed as invalid on 2021/04/22 20:50
Subsystems: fs mm
[Documentation on labels]
Reported-by: syzbot+ce27d633852d92b68327@syzkaller.appspotmail.com
First crash: 1907d, last: 1643d
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark (3) mm fs 6 3 1916d 1951d 0/29 closed as invalid on 2020/06/18 14:13
upstream KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark (2) fs mm 6 4 2028d 2047d 0/29 auto-closed as invalid on 2020/05/07 21:06
upstream KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark mm fs 6 1 2155d 2155d 0/29 closed as invalid on 2019/11/19 13:44

Sample crash report:
==================================================================
BUG: KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark

write to 0xffff88810eeeb3c4 of 4 bytes by task 12380 on cpu 0:
 xa_mark_clear lib/xarray.c:75 [inline]
 xas_clear_mark+0x16c/0x180 lib/xarray.c:921
 __test_set_page_writeback+0x3db/0x4f0 mm/page-writeback.c:2802
 ext4_bio_write_page+0xfe/0xe60 fs/ext4/page-io.c:450
 mpage_submit_page fs/ext4/inode.c:2102 [inline]
 mpage_process_page_bufs+0x4db/0x5f0 fs/ext4/inode.c:2216
 mpage_prepare_extent_to_map+0x4e6/0x640 fs/ext4/inode.c:2628
 ext4_writepages+0x674/0x1e70 fs/ext4/inode.c:2756
 do_writepages+0x7b/0x150 mm/page-writeback.c:2352
 __filemap_fdatawrite_range+0x19d/0x1d0 mm/filemap.c:424
 file_write_and_wait_range+0x9f/0x120 mm/filemap.c:763
 ext4_sync_file+0x105/0x6e0 fs/ext4/fsync.c:151
 vfs_fsync_range+0x107/0x120 fs/sync.c:200
 generic_write_sync include/linux/fs.h:2843 [inline]
 ext4_buffered_write_iter+0x38f/0x3e0 fs/ext4/file.c:277
 ext4_file_write_iter+0x48a/0x10b0 fs/ext4/file.c:502
 call_write_iter include/linux/fs.h:1977 [inline]
 do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740
 do_iter_write+0x112/0x4c0 fs/read_write.c:866
 vfs_iter_write+0x4c/0x70 fs/read_write.c:907
 iter_file_splice_write+0x40a/0x750 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x650 fs/splice.c:891
 do_splice_direct+0xf5/0x170 fs/splice.c:979
 do_sendfile+0x7a6/0xe20 fs/read_write.c:1260
 __do_sys_sendfile64 fs/read_write.c:1319 [inline]
 __se_sys_sendfile64 fs/read_write.c:1311 [inline]
 __x64_sys_sendfile64+0xa9/0x130 fs/read_write.c:1311
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88810eeeb3c4 of 4 bytes by task 12375 on cpu 1:
 xa_marked include/linux/xarray.h:416 [inline]
 mapping_tagged include/linux/fs.h:490 [inline]
 __filemap_fdatawrite_range+0x11c/0x1d0 mm/filemap.c:420
 filemap_write_and_wait_range+0x8b/0x2a0 mm/filemap.c:657
 __iomap_dio_rw+0x40a/0xa30 fs/iomap/direct-io.c:525
 iomap_dio_rw+0x30/0x70 fs/iomap/direct-io.c:641
 ext4_dio_write_iter fs/ext4/file.c:551 [inline]
 ext4_file_write_iter+0xe5d/0x10b0 fs/ext4/file.c:661
 call_write_iter include/linux/fs.h:1977 [inline]
 do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740
 do_iter_write+0x112/0x4c0 fs/read_write.c:866
 vfs_iter_write+0x4c/0x70 fs/read_write.c:907
 iter_file_splice_write+0x40a/0x750 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x650 fs/splice.c:891
 do_splice_direct+0xf5/0x170 fs/splice.c:979
 do_sendfile+0x7a6/0xe20 fs/read_write.c:1260
 __do_sys_sendfile64 fs/read_write.c:1325 [inline]
 __se_sys_sendfile64 fs/read_write.c:1311 [inline]
 __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1311
 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: 12375 Comm: syz-executor.4 Not tainted 5.12.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (29):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/03/18 20:49 upstream bf152b0b41dc 380dcc3e .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/03/14 19:50 upstream 88fe49249c99 cc1cff8f .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/03/13 01:29 upstream f296bfd5cd04 429d8a6b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/02/23 06:05 upstream b12b47249688 fcc6d71b .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/02/17 19:35 upstream f40ddce88593 14052202 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/01/26 12:38 upstream 13391c60da33 52e37319 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/01/20 05:34 upstream 45dfb8a5659a 63631df1 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/01/18 05:04 upstream 19c329f68089 fd103621 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_fdatawrite_range / xas_clear_mark
2021/01/12 19:27 upstream e609571b5ffa 0cdd6185 .config console log report info ci2-upstream-kcsan-gce
2020/12/29 13:44 upstream dea8dcf2a9fa 80910769 .config console log report info ci2-upstream-kcsan-gce
2020/12/25 22:37 upstream 5814bc2d4cc2 821e0b09 .config console log report info ci2-upstream-kcsan-gce
2020/12/21 09:08 upstream e37b12e4bb21 04201c06 .config console log report info ci2-upstream-kcsan-gce
2020/12/08 22:23 upstream 7d8761ba27fc 40cc414d .config console log report info ci2-upstream-kcsan-gce
2020/11/09 22:00 upstream 3552c3709c0e cba33199 .config console log report info ci2-upstream-kcsan-gce
2020/11/08 21:05 upstream 9dbc1c03eeb5 cba33199 .config console log report info ci2-upstream-kcsan-gce
2020/10/15 20:18 upstream 726eb70e0d34 6e262c73 .config console log report info ci2-upstream-kcsan-gce
2020/10/03 03:40 upstream d3d45f8220d6 2653fa43 .config console log report info ci2-upstream-kcsan-gce
2020/09/18 13:47 upstream 10b82d517648 38962c8b .config console log report info ci2-upstream-kcsan-gce
2020/09/15 21:40 upstream fc4f28bb3daf 18d7d030 .config console log report info ci2-upstream-kcsan-gce
2020/09/13 22:28 upstream 84b134997212 2d3cdd63 .config console log report ci2-upstream-kcsan-gce
2020/09/12 11:27 upstream 729e3d091984 21d289c2 .config console log report ci2-upstream-kcsan-gce
2020/09/10 10:08 upstream 7fe10096c150 ac7ca78e .config console log report ci2-upstream-kcsan-gce
2020/09/07 01:01 upstream a8205e310011 abf9ba4f .config console log report ci2-upstream-kcsan-gce
2020/08/23 21:34 upstream cb95712138ec a6d5f3ad .config console log report ci2-upstream-kcsan-gce
2020/08/21 03:19 upstream da2968ff879b 70160577 .config console log report ci2-upstream-kcsan-gce
2020/08/20 19:15 upstream 7eac66d0456f 70160577 .config console log report ci2-upstream-kcsan-gce
2020/08/04 12:45 upstream c0842fbc1b18 80a06902 .config console log report ci2-upstream-kcsan-gce
2020/07/26 09:34 upstream 04300d66f0a0 51265195 .config console log report ci2-upstream-kcsan-gce
2020/06/27 05:41 upstream 1590a2e1c681 ffec44b5 .config console log report ci2-upstream-kcsan-gce
* Struck through repros no longer work on HEAD.