syzbot


KMSAN: uninit-value in longest_match_std

Status: auto-obsoleted due to no activity on 2023/12/09 02:47
Subsystems: ntfs3
[Documentation on labels]
First crash: 323d, last: 216d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: kernel-infoleak in _copy_to_iter (7) net C 138977 454d 806d 22/26 fixed on 2023/02/24 13:50
upstream KMSAN: uninit-value in __crc32c_le_base (2) crypto C 6207 416d 1488d 0/26 closed as invalid on 2023/04/06 23:31
upstream KMSAN: uninit-value in longest_match_std (2) ntfs3 C 6253 11m 134d 0/26 upstream: reported C repro on 2024/01/09 18:17
upstream KMSAN: kernel-infoleak in _copy_to_iter (8) mm C 21180 349d 444d 22/26 fixed on 2023/06/08 14:41

Sample crash report:
ntfs3: loop2: Mark volume as dirty due to NTFS errors
=====================================================
BUG: KMSAN: uninit-value in longest_match_std+0x5d9/0xe00 fs/ntfs3/lznt.c:60
 longest_match_std+0x5d9/0xe00 fs/ntfs3/lznt.c:60
 compress_chunk fs/ntfs3/lznt.c:170 [inline]
 compress_lznt+0x41b/0xef0 fs/ntfs3/lznt.c:336
 ni_write_frame+0xf89/0x1c80 fs/ntfs3/frecord.c:2839
 ntfs_compress_write+0x2521/0x3b70 fs/ntfs3/file.c:994
 ntfs_file_write_iter+0x89b/0xd30 fs/ntfs3/file.c:1080
 do_iter_write+0x60c/0x1420 fs/read_write.c:860
 vfs_writev+0x329/0x7b0 fs/read_write.c:933
 do_writev+0x251/0x5b0 fs/read_write.c:976
 __do_sys_writev fs/read_write.c:1049 [inline]
 __se_sys_writev fs/read_write.c:1046 [inline]
 __ia32_sys_writev+0x95/0xe0 fs/read_write.c:1046
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4449
 alloc_pages+0xd01/0x1040
 folio_alloc+0x42/0x120 mm/mempolicy.c:2307
 filemap_alloc_folio+0xa5/0x430 mm/filemap.c:976
 __filemap_get_folio+0xa76/0x1450 mm/filemap.c:1936
 pagecache_get_page+0x4a/0x2e0 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:723 [inline]
 ntfs_get_frame_pages+0xdc/0x9f0 fs/ntfs3/file.c:793
 ntfs_compress_write+0x1b0b/0x3b70 fs/ntfs3/file.c:943
 ntfs_file_write_iter+0x89b/0xd30 fs/ntfs3/file.c:1080
 do_iter_write+0x60c/0x1420 fs/read_write.c:860
 vfs_writev+0x329/0x7b0 fs/read_write.c:933
 do_writev+0x251/0x5b0 fs/read_write.c:976
 __do_sys_writev fs/read_write.c:1049 [inline]
 __se_sys_writev fs/read_write.c:1046 [inline]
 __ia32_sys_writev+0x95/0xe0 fs/read_write.c:1046
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 1 PID: 7469 Comm: syz-executor.2 Not tainted 6.6.0-rc6-syzkaller-00043-gdd72f9c7e512 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
=====================================================

Crashes (1360):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/10/20 02:30 upstream dd72f9c7e512 42e1d524 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/19 07:33 upstream dd72f9c7e512 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/19 04:04 upstream dd72f9c7e512 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/19 01:55 upstream dd72f9c7e512 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/18 16:56 upstream 06dc10eae55b 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/18 15:09 upstream 06dc10eae55b 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/17 23:30 upstream 213f891525c2 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/17 21:45 upstream 213f891525c2 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/17 13:57 upstream 213f891525c2 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/17 13:52 upstream 213f891525c2 342b9c55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/16 22:09 upstream 58720809f527 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/16 13:16 upstream 58720809f527 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/16 10:25 upstream 58720809f527 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/16 08:52 upstream 58720809f527 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/15 18:05 upstream 9a3dad63edbe 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/15 15:48 upstream 9a3dad63edbe 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/15 08:51 upstream 70f8c6f8f880 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/15 07:37 upstream 70f8c6f8f880 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/15 06:53 upstream 70f8c6f8f880 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/15 05:25 upstream 70f8c6f8f880 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/15 03:11 upstream 70f8c6f8f880 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/14 17:59 upstream 727fb8376504 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/14 16:49 upstream 727fb8376504 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/14 16:40 upstream 727fb8376504 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/14 06:07 upstream ad7f1baed071 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/14 04:46 upstream ad7f1baed071 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/14 03:38 upstream ad7f1baed071 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/13 16:48 upstream ce583d5fb9d3 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/13 15:01 upstream ce583d5fb9d3 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/13 13:51 upstream ce583d5fb9d3 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/13 12:37 upstream ce583d5fb9d3 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/13 12:27 upstream ce583d5fb9d3 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/13 10:47 upstream ce583d5fb9d3 6388bc36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/13 03:08 upstream 401644852d0b fc170927 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/12 06:42 upstream 8182d7a3f1b8 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/11 10:56 upstream 1c8b86a3799f 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/11 08:10 upstream 1c8b86a3799f 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/11 06:57 upstream 1c8b86a3799f 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/11 04:26 upstream 1c8b86a3799f 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/11 02:52 upstream 1c8b86a3799f 83165b57 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/10 14:28 upstream 94f6f0550c62 c9be5398 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/10 10:51 upstream 94f6f0550c62 c9be5398 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/10 10:20 upstream 94f6f0550c62 c9be5398 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 23:42 upstream 94f6f0550c62 3c53c7d9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 22:33 upstream 94f6f0550c62 3c53c7d9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 19:26 upstream 94f6f0550c62 3c53c7d9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 11:54 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 10:53 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 10:50 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 09:44 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
2023/10/09 07:06 upstream 94f6f0550c62 5e837c76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in longest_match_std
* Struck through repros no longer work on HEAD.