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KMSAN: uninit-value in longest_match_std (2)

Status: upstream: reported C repro on 2024/01/09 18:17
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+08d8956768c96a2c52cf@syzkaller.appspotmail.com
First crash: 326d, last: 4h10m
▶ ▼ Discussions (7)
Title Replies (including bot) Last reply
[syzbot] Monthly ntfs3 report (Nov 2024) 0 (1) 2024/11/13 11:07
[syzbot] Monthly ntfs3 report (Jun 2024) 0 (1) 2024/06/10 12:41
[syzbot] Monthly ntfs3 report (May 2024) 0 (1) 2024/05/06 13:18
[syzbot] Monthly ntfs3 report (Apr 2024) 0 (1) 2024/04/05 12:38
[syzbot] Monthly ntfs3 report (Mar 2024) 0 (1) 2024/03/05 11:09
[syzbot] Monthly ntfs3 report (Feb 2024) 0 (1) 2024/02/02 21:04
[syzbot] [ntfs3?] KMSAN: uninit-value in longest_match_std (2) 0 (1) 2024/01/09 18:17
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in longest_match_std ntfs3 1360 398d 505d 0/28 auto-obsoleted due to no activity on 2023/12/09 02:47
upstream KMSAN: kernel-infoleak in _copy_to_iter (7) net C 138977 635d 987d 22/28 fixed on 2023/02/24 13:50
upstream KMSAN: uninit-value in __crc32c_le_base (2) crypto C 6207 598d 1670d 0/28 closed as invalid on 2023/04/06 23:31
upstream KMSAN: kernel-infoleak in _copy_to_iter (8) mm C 21180 531d 625d 22/28 fixed on 2023/06/08 14:41
▶ ▼ Last patch testing requests (7)
Created Duration User Patch Repo Result
2024/09/07 20:13 28m retest repro upstream OK log
2024/09/07 20:13 33m retest repro upstream OK log
2024/08/05 19:45 27m retest repro upstream OK log
2024/08/05 19:45 27m retest repro upstream OK log
2024/08/05 19:45 30m retest repro upstream OK log
2024/06/29 19:30 22m retest repro upstream error
2024/06/29 19:30 22m retest repro upstream error

Sample crash report:
=====================================================
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+0x41f/0xef0 fs/ntfs3/lznt.c:336
 ni_write_frame+0xf8f/0x1c80 fs/ntfs3/frecord.c:2907
 ntfs_compress_write+0x25cb/0x3c80 fs/ntfs3/file.c:1094
 ntfs_file_write_iter+0xa09/0xe90 fs/ntfs3/file.c:1191
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0xb28/0x1540 fs/read_write.c:683
 ksys_write+0x24f/0x4c0 fs/read_write.c:736
 __do_sys_write fs/read_write.c:748 [inline]
 __se_sys_write fs/read_write.c:745 [inline]
 __x64_sys_write+0x93/0xe0 fs/read_write.c:745
 x64_sys_call+0x306a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_pages_noprof+0x9d6/0xe70 mm/page_alloc.c:4756
 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265
 alloc_pages_noprof mm/mempolicy.c:2345 [inline]
 folio_alloc_noprof+0x1db/0x310 mm/mempolicy.c:2352
 filemap_alloc_folio_noprof+0xa6/0x440 mm/filemap.c:1010
 __filemap_get_folio+0xac4/0x1550 mm/filemap.c:1952
 ntfs_get_frame_pages+0xd6/0x6b0 fs/ntfs3/file.c:891
 ntfs_compress_write+0x1bd9/0x3c80 fs/ntfs3/file.c:1043
 ntfs_file_write_iter+0xa09/0xe90 fs/ntfs3/file.c:1191
 new_sync_write fs/read_write.c:590 [inline]
 vfs_write+0xb28/0x1540 fs/read_write.c:683
 ksys_write+0x24f/0x4c0 fs/read_write.c:736
 __do_sys_write fs/read_write.c:748 [inline]
 __se_sys_write fs/read_write.c:745 [inline]
 __x64_sys_write+0x93/0xe0 fs/read_write.c:745
 x64_sys_call+0x306a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:2
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 5187 Comm: syz-executor145 Not tainted 6.11.0-syzkaller-11993-g3efc57369a0c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================

Crashes (9524):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/29 05:43 upstream 3efc57369a0c ba29ff75 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/07/21 23:31 upstream 2c9b3512402e b88348e9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/07/21 21:07 upstream 2c9b3512402e b88348e9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/07/21 15:24 upstream 2c9b3512402e b88348e9 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/04/12 02:09 upstream e8c39d0f57f3 478efa7f .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/01/02 15:04 upstream 610a9b8f49fb fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/20 20:55 upstream bf9aa14fc523 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/20 10:49 upstream a5c93bfec0be 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/20 08:41 upstream a5c93bfec0be 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/20 07:35 upstream a5c93bfec0be 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/19 23:36 upstream 158f238aa69d 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/19 19:53 upstream 158f238aa69d 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/19 14:02 upstream c6d64479d609 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/19 11:47 upstream c6d64479d609 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/19 10:45 upstream c6d64479d609 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/19 08:20 upstream c6d64479d609 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/18 22:01 upstream adc218676eef 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/18 15:48 upstream adc218676eef 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/18 06:42 upstream f66d6acccbc0 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/18 04:10 upstream f66d6acccbc0 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/18 00:19 upstream f66d6acccbc0 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 19:13 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 14:02 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 12:47 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 12:41 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 10:15 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 09:06 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 03:35 upstream e8bdb3c8be08 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/17 00:36 upstream e8bdb3c8be08 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/16 19:08 upstream e8bdb3c8be08 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/16 12:27 upstream f868cd251776 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/16 11:09 upstream f868cd251776 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/16 09:50 upstream f868cd251776 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/16 07:13 upstream f868cd251776 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/16 05:31 upstream f868cd251776 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/15 20:21 upstream cfaaa7d010d1 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/15 16:41 upstream cfaaa7d010d1 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/15 12:06 upstream cfaaa7d010d1 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in longest_match_std
2024/11/21 02:36 upstream bf9aa14fc523 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/20 22:00 upstream bf9aa14fc523 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/20 21:55 upstream bf9aa14fc523 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/20 09:28 upstream a5c93bfec0be 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/19 15:42 upstream c6d64479d609 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/19 00:33 upstream adc218676eef 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/18 19:28 upstream adc218676eef 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/18 02:55 upstream f66d6acccbc0 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/17 18:10 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/17 16:30 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/17 11:27 upstream 4a5df3796467 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2024/11/16 22:45 upstream e8bdb3c8be08 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
2023/12/31 06:39 upstream 453f5db0619e fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in longest_match_std
* Struck through repros no longer work on HEAD.