syzbot


KCSAN: data-race in __filemap_remove_folio / folio_mapping (2)

Status: upstream: reported on 2023/04/24 07:19
Labels: xfs (incorrect?)
Reported-by: syzbot+606f94dfeaaa45124c90@syzkaller.appspotmail.com
First crash: 230d, last: 1d03h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [fs?] [mm?] KCSAN: data-race in __filemap_remove_folio / folio_mapping (2) 5 (6) 2023/04/24 14:21
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in __filemap_remove_folio / folio_mapping 42 438d 502d 0/24 auto-closed as invalid on 2022/04/21 14:11

Sample crash report:
==================================================================
BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping

write to 0xffffea0004d9b8d8 of 8 bytes by task 16534 on cpu 1:
 page_cache_delete mm/filemap.c:145 [inline]
 __filemap_remove_folio+0x205/0x320 mm/filemap.c:225
 invalidate_complete_folio2 mm/truncate.c:587 [inline]
 invalidate_inode_pages2_range+0x506/0x790 mm/truncate.c:674
 __iomap_dio_rw+0x6a8/0x1100 fs/iomap/direct-io.c:579
 iomap_dio_rw+0x40/0x90 fs/iomap/direct-io.c:688
 ext4_dio_write_iter fs/ext4/file.c:597 [inline]
 ext4_file_write_iter+0x9e6/0x10e0 fs/ext4/file.c:708
 do_iter_write+0x4ae/0x770 fs/read_write.c:860
 vfs_iter_write+0x50/0x70 fs/read_write.c:901
 iter_file_splice_write+0x456/0x7d0 fs/splice.c:795
 do_splice_from fs/splice.c:873 [inline]
 direct_splice_actor+0x84/0xa0 fs/splice.c:1039
 splice_direct_to_actor+0x2ee/0x5f0 fs/splice.c:994
 do_splice_direct+0x104/0x180 fs/splice.c:1082
 do_sendfile+0x3b8/0x950 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64 fs/read_write.c:1308 [inline]
 __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffea0004d9b8d8 of 8 bytes by task 16535 on cpu 0:
 folio_mapping+0x92/0x110 mm/util.c:775
 folio_evictable mm/internal.h:156 [inline]
 move_folios_to_lru+0x132/0x690 mm/vmscan.c:2490
 shrink_inactive_list mm/vmscan.c:2606 [inline]
 shrink_list mm/vmscan.c:2844 [inline]
 shrink_lruvec+0xd98/0x17a0 mm/vmscan.c:6280
 shrink_node_memcgs mm/vmscan.c:6467 [inline]
 shrink_node+0xaa0/0x1500 mm/vmscan.c:6502
 shrink_zones mm/vmscan.c:6737 [inline]
 do_try_to_free_pages+0x40d/0xc80 mm/vmscan.c:6799
 try_to_free_mem_cgroup_pages+0x1e2/0x480 mm/vmscan.c:7114
 memory_high_write+0x136/0x1d0 mm/memcontrol.c:6541
 cgroup_file_write+0x16b/0x310 kernel/cgroup/cgroup.c:4071
 kernfs_fop_write_iter+0x1ca/0x2b0 fs/kernfs/file.c:334
 call_write_iter include/linux/fs.h:1868 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x47b/0x780 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xffff88810a3c4db0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 16535 Comm: syz-executor.2 Tainted: G        W          6.4.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
==================================================================

Crashes (47):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/05/29 04:21 upstream 7877cb91f108 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/05/24 01:31 upstream 27e462c8fad4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/05/16 18:07 upstream f1fcbaa18b28 11c89444 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/05/09 19:50 upstream 1dc3731daf1f 30aa2a7e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/05/02 06:49 upstream c8c655c34e33 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/29 06:32 upstream 89d77f71f493 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/25 06:09 upstream 1a0beef98b58 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/24 13:39 upstream 457391b03803 fdc18293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/23 07:32 upstream 622322f53c6d 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/22 18:14 upstream 2caeeb9d4a1b 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/22 10:53 upstream 8e41e0a57566 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/16 16:53 upstream 3e7bb4f24617 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/16 03:13 upstream a7a55e27ad72 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/15 07:31 upstream 95abc817ab3a ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/14 16:44 upstream 44149752e998 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/13 08:14 upstream 0bcc40255504 82d5e53e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/12 18:08 upstream 0bcc40255504 1a1596b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/10 04:10 upstream 09a9639e56c0 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/04/07 17:32 upstream f2afccfefe7b f7ba566d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/03/22 09:03 upstream a1effab7a3a3 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/03/09 14:11 upstream 6a98c9cae232 f08b59ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/03/06 04:45 upstream f915322fe014 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/03/03 18:40 upstream 2eb29d59ddf0 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/02/23 06:14 upstream 307e14c03906 9f1e2cb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/02/23 01:59 upstream 5b7c4cabbb65 9f1e2cb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/02/20 21:21 upstream 91bc559d8d3a 2414209c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/02/16 14:55 upstream 033c40a89f55 38b317a7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/02/02 06:04 upstream 9f266ccaa2f5 9a6f477c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/01/27 22:52 upstream 83abd4d4c4be 9dfcf09c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2023/01/11 21:09 upstream 7dd4b804e080 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/12/30 10:24 upstream 2258c2dc850b 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/12/28 19:18 upstream 1b929c02afd3 44712fbc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/12/21 21:20 upstream b6bb9676f216 4067838e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/12/17 15:24 upstream 77856d911a8c 05494336 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/12/14 04:06 upstream 764822972d64 f6511626 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/11/30 01:01 upstream ca57f02295f1 579a3740 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/11/19 14:12 upstream ab290eaddc4c 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/11/17 20:58 upstream 81ac25651a62 4ba8ab94 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/11/16 17:07 upstream 81e7cfa3a9eb 3a127a31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/11/08 22:24 upstream f141df371335 060f945e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/11/06 17:02 upstream 2f5065a0bc9d 6d752409 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/10/31 20:52 upstream 30a0b95b1335 2a71366b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/10/28 23:07 upstream 05c31d25cc96 8168b69e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/10/25 15:16 upstream 337a0a0b63f1 45645420 .config console log report info [disk image] [vmlinux] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/10/15 21:35 upstream 19d17ab7c68b 67cb024c .config console log report info [disk image] [vmlinux] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/10/14 20:18 upstream 9c9155a3509a 4954e4b2 .config console log report info [disk image] [vmlinux] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
2022/10/11 17:24 upstream 60bb8154d1d7 02b6492e .config console log report info [disk image] [vmlinux] ci2-upstream-kcsan-gce KCSAN: data-race in __filemap_remove_folio / folio_mapping
* Struck through repros no longer work on HEAD.