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KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range (2)

Status: closed as invalid on 2020/06/18 14:24
Subsystems: ext4
[Documentation on labels]
First crash: 1607d, last: 1410d
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range (3) fs mm 172 1086d 1319d 0/26 auto-closed as invalid on 2021/06/09 03:35
upstream KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range ext4 1 1640d 1640d 0/26 closed as invalid on 2019/11/19 13:44

Sample crash report:
==================================================================
BUG: KCSAN: data-race in __add_to_page_cache_locked / invalidate_inode_pages2_range

write to 0xffff8880bb144c40 of 8 bytes by task 29226 on cpu 1:
 __add_to_page_cache_locked+0x28a/0x800 mm/filemap.c:868
 add_to_page_cache_lru+0xc7/0x260 mm/filemap.c:921
 ext4_mpage_readpages+0x31c/0x14d0 fs/ext4/readpage.c:259
 ext4_readpages+0x8e/0xb0 fs/ext4/inode.c:3243
 read_pages+0xa2/0x360 mm/readahead.c:126
 __do_page_cache_readahead+0x358/0x380 mm/readahead.c:212
 ra_submit mm/internal.h:62 [inline]
 ondemand_readahead+0x369/0x730 mm/readahead.c:492
 page_cache_sync_readahead+0x1b0/0x1e0 mm/readahead.c:527
 generic_file_buffered_read mm/filemap.c:2036 [inline]
 generic_file_read_iter+0xf24/0x18c0 mm/filemap.c:2309
 ext4_file_read_iter fs/ext4/file.c:131 [inline]
 ext4_file_read_iter+0x103/0x360 fs/ext4/file.c:114
 call_read_iter include/linux/fs.h:1901 [inline]
 generic_file_splice_read+0x2df/0x470 fs/splice.c:313
 do_splice_to+0xc7/0x100 fs/splice.c:892
 splice_direct_to_actor+0x1b9/0x540 fs/splice.c:971
 do_splice_direct+0x152/0x1d0 fs/splice.c:1080
 do_sendfile+0x380/0x800 fs/read_write.c:1521
 __do_sys_sendfile64 fs/read_write.c:1582 [inline]
 __se_sys_sendfile64 fs/read_write.c:1568 [inline]
 __x64_sys_sendfile64+0x121/0x140 fs/read_write.c:1568
 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff8880bb144c40 of 8 bytes by task 29232 on cpu 0:
 invalidate_inode_pages2_range+0x50/0xb40 mm/truncate.c:695
 iomap_dio_rw+0x540/0x9a0 fs/iomap/direct-io.c:481
 ext4_dio_read_iter fs/ext4/file.c:77 [inline]
 ext4_file_read_iter fs/ext4/file.c:129 [inline]
 ext4_file_read_iter+0x2b4/0x360 fs/ext4/file.c:114
 call_read_iter include/linux/fs.h:1901 [inline]
 generic_file_splice_read+0x2df/0x470 fs/splice.c:313
 do_splice_to+0xc7/0x100 fs/splice.c:892
 splice_direct_to_actor+0x1b9/0x540 fs/splice.c:971
 do_splice_direct+0x152/0x1d0 fs/splice.c:1080
 do_sendfile+0x380/0x800 fs/read_write.c:1521
 __do_sys_sendfile64 fs/read_write.c:1582 [inline]
 __se_sys_sendfile64 fs/read_write.c:1568 [inline]
 __x64_sys_sendfile64+0x121/0x140 fs/read_write.c:1568
 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 29232 Comm: syz-executor.0 Not tainted 5.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================

Crashes (36):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/06/15 10:03 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 8e3ab941 .config console log report ci2-upstream-kcsan-gce
2020/06/13 15:51 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 dbce178a .config console log report ci2-upstream-kcsan-gce
2020/06/13 07:20 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 f4724dd3 .config console log report ci2-upstream-kcsan-gce
2020/06/12 05:55 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 819b58b0 .config console log report ci2-upstream-kcsan-gce
2020/06/11 21:57 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 1beaee21 .config console log report ci2-upstream-kcsan-gce
2020/06/11 00:01 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 5caaad3a .config console log report ci2-upstream-kcsan-gce
2020/06/08 04:52 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 7751efd0 .config console log report ci2-upstream-kcsan-gce
2020/05/26 13:45 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 8ca3b7d2 .config console log report ci2-upstream-kcsan-gce
2020/05/25 15:35 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 73964a9b .config console log report ci2-upstream-kcsan-gce
2020/05/17 17:21 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 37bccd4e .config console log report ci2-upstream-kcsan-gce
2020/05/13 12:04 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 9a6d42fb .config console log report ci2-upstream-kcsan-gce
2020/05/09 17:41 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 88cb3e92 .config console log report ci2-upstream-kcsan-gce
2020/05/07 15:21 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 98cbd87b .config console log report ci2-upstream-kcsan-gce
2020/04/24 06:32 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 03d97a1b .config console log report ci2-upstream-kcsan-gce
2020/04/23 20:39 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 b9233cab .config console log report ci2-upstream-kcsan-gce
2020/04/21 11:50 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 f20434a8 .config console log report ci2-upstream-kcsan-gce
2020/04/21 02:47 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 98a9f9e6 .config console log report ci2-upstream-kcsan-gce
2020/04/19 16:12 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 6dfd45e1 .config console log report ci2-upstream-kcsan-gce
2020/04/16 19:41 https://github.com/google/ktsan.git kcsan 7c3cd68e5d38 c743fcb3 .config console log report ci2-upstream-kcsan-gce
2020/04/07 11:30 https://github.com/google/ktsan.git kcsan 40959e34d670 99a96044 .config console log report ci2-upstream-kcsan-gce
2020/03/28 16:46 https://github.com/google/ktsan.git kcsan 40959e34d670 f1ebdfba .config console log report ci2-upstream-kcsan-gce
2020/03/23 15:54 https://github.com/google/ktsan.git kcsan 40959e34d670 84f999d6 .config console log report ci2-upstream-kcsan-gce
2020/03/05 15:09 https://github.com/google/ktsan.git kcsan 766d004d1b85 b655d91b .config console log report ci2-upstream-kcsan-gce
2020/03/03 20:48 https://github.com/google/ktsan.git kcsan 766d004d1b85 1f73b64b .config console log report ci2-upstream-kcsan-gce
2020/02/26 18:52 https://github.com/google/ktsan.git kcsan 766d004d1b85 251aabb7 .config console log report ci2-upstream-kcsan-gce
2020/02/24 23:32 https://github.com/google/ktsan.git kcsan 766d004d1b85 59b57593 .config console log report ci2-upstream-kcsan-gce
2020/02/22 22:52 https://github.com/google/ktsan.git kcsan 766d004d1b85 2c36e7a7 .config console log report ci2-upstream-kcsan-gce
2020/02/19 23:16 https://github.com/google/ktsan.git kcsan b12d66a6c34f 47fae6e9 .config console log report ci2-upstream-kcsan-gce
2020/02/16 23:58 https://github.com/google/ktsan.git kcsan b12d66a6c34f 1f448cd6 .config console log report ci2-upstream-kcsan-gce
2020/02/06 00:28 https://github.com/google/ktsan.git kcsan 245a43005292 662cf49a .config console log report ci2-upstream-kcsan-gce
2020/01/10 19:40 https://github.com/google/ktsan.git kcsan 245a43005292 532ec44e .config console log report ci2-upstream-kcsan-gce
2019/12/24 04:35 https://github.com/google/ktsan.git kcsan 245a43005292 be5c2c81 .config console log report ci2-upstream-kcsan-gce
2019/12/19 01:20 https://github.com/google/ktsan.git kcsan 245a43005292 79b211f7 .config console log report ci2-upstream-kcsan-gce
2019/12/18 05:14 https://github.com/google/ktsan.git kcsan 245a43005292 64ca0a37 .config console log report ci2-upstream-kcsan-gce
2019/12/06 21:10 https://github.com/google/ktsan.git kcsan ef798c30ba4e 85f26751 .config console log report ci2-upstream-kcsan-gce
2019/12/01 06:04 https://github.com/google/ktsan.git kcsan ef798c30ba4e a76bf83f .config console log report ci2-upstream-kcsan-gce
* Struck through repros no longer work on HEAD.