syzbot


KMSAN: uninit-value in hfsplus_lookup

Status: upstream: reported C repro on 2024/01/09 18:17
Subsystems: hfs
[Documentation on labels]
Reported-by: syzbot+91db973302e7b18c7653@syzkaller.appspotmail.com
First crash: 580d, last: 12h32m
Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly hfs report (Dec 2024) 0 (1) 2024/12/19 18:39
[PATCH] fs/hfsplus: fix uninit-value in hfsplus_lookup 1 (1) 2024/01/10 04:41
[syzbot] [hfs?] KMSAN: uninit-value in hfsplus_lookup 1 (3) 2024/01/10 02:48
Last patch testing requests (4)
Created Duration User Patch Repo Result
2024/06/30 05:40 22m retest repro upstream error
2024/06/30 05:40 22m retest repro upstream error
2024/06/30 05:40 22m retest repro upstream error
2024/01/10 01:48 58m eadavis@qq.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 861deac3b092 OK log

Sample crash report:
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent
hfsplus: unable to mark blocks free: error -5
hfsplus: can't free extent
=====================================================
BUG: KMSAN: uninit-value in hfsplus_lookup+0x66b/0xef0 fs/hfsplus/dir.c:83
 hfsplus_lookup+0x66b/0xef0 fs/hfsplus/dir.c:83
 __lookup_slow+0x538/0x710 fs/namei.c:1793
 lookup_slow+0x6a/0xd0 fs/namei.c:1810
 walk_component+0x467/0x650 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x27d/0x6f0 fs/namei.c:2636
 filename_lookup+0x288/0x7c0 fs/namei.c:2665
 user_path_at+0x90/0x3e0 fs/namei.c:3072
 ksys_umount fs/namespace.c:2071 [inline]
 __do_sys_umount fs/namespace.c:2079 [inline]
 __se_sys_umount fs/namespace.c:2077 [inline]
 __x64_sys_umount+0x146/0x240 fs/namespace.c:2077
 x64_sys_call+0x265e/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:167
 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_frozen_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4762
 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof+0x1bf/0x1e0 mm/mempolicy.c:2341
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab+0x23a/0x1110 mm/slub.c:2587
 new_slab mm/slub.c:2640 [inline]
 ___slab_alloc+0x1287/0x3540 mm/slub.c:3826
 __slab_alloc mm/slub.c:3916 [inline]
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 kmem_cache_alloc_lru_noprof+0x855/0xe20 mm/slub.c:4183
 hfsplus_alloc_inode+0x5a/0xd0 fs/hfsplus/super.c:627
 alloc_inode+0x86/0x460 fs/inode.c:336
 iget_locked+0x250/0x1290 fs/inode.c:1487
 hfsplus_iget+0x59/0xae0 fs/hfsplus/super.c:65
 hfsplus_btree_open+0x13e/0x1d00 fs/hfsplus/btree.c:150
 hfsplus_fill_super+0x118b/0x26e0 fs/hfsplus/super.c:479
 get_tree_bdev_flags+0x6ec/0x910 fs/super.c:1636
 get_tree_bdev+0x37/0x50 fs/super.c:1659
 hfsplus_get_tree+0x34/0x40 fs/hfsplus/super.c:640
 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3560
 path_mount+0x742/0x1f10 fs/namespace.c:3887
 do_mount fs/namespace.c:3900 [inline]
 __do_sys_mount fs/namespace.c:4111 [inline]
 __se_sys_mount+0x71f/0x800 fs/namespace.c:4088
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4088
 x64_sys_call+0x39bf/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:166
 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: 5783 Comm: syz-executor657 Not tainted 6.14.0-rc5-syzkaller-00214-g21e4543a2e2f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
=====================================================

Crashes (2684):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/08 10:16 upstream 21e4543a2e2f 7e3bd60d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2024/11/18 23:56 upstream adc218676eef 571351cb .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2024/10/30 13:48 upstream c1e939a21eb1 66aeb999 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2024/03/18 03:02 upstream 741e9d668aa5 d615901c .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2024/03/08 14:40 upstream 3aaa8ce7a335 cf82cde1 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2023/12/25 19:17 upstream 861deac3b092 fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/19 12:44 upstream 3088d26962e8 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/19 01:14 upstream fc96b232f8e7 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/16 06:39 upstream 1a1d569a75f3 23b969b7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/15 13:46 upstream 834a4a689699 23b969b7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/15 00:30 upstream 834a4a689699 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/11 08:26 upstream 2eb959eeecc6 1bc60a19 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/10 12:56 upstream 3b07108ada81 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/10 11:35 upstream 3b07108ada81 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/08 20:12 upstream 0af2f6be1b42 a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/08 07:50 upstream 0af2f6be1b42 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/08 05:59 upstream 0af2f6be1b42 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/07 22:00 upstream 0af2f6be1b42 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/07 19:24 upstream 0af2f6be1b42 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/07 19:21 upstream 0af2f6be1b42 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/07 14:59 upstream 0af2f6be1b42 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/06 17:27 upstream f4d2ef48250a 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/06 03:44 upstream 56f944529ec2 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/06 00:33 upstream 56f944529ec2 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/05 17:48 upstream a8662bcd2ff1 1c65791e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/03 13:27 upstream 92b71befc349 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/03 09:30 upstream 92b71befc349 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/03 03:12 upstream 92b71befc349 996a9618 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/02 03:08 upstream 08733088b566 d863cf4b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/30 06:56 upstream 092e335082f2 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/29 11:56 upstream eff5f16bfd87 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/29 05:24 upstream eff5f16bfd87 cf25e2c2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/28 07:45 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/28 01:21 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/26 21:38 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/26 09:10 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/26 07:48 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/26 06:45 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/25 12:42 upstream 327ecdbc0fda 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/03/24 22:26 upstream 38fec10eb60d 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2024/01/02 07:02 upstream 610a9b8f49fb fb427a07 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-root KMSAN: uninit-value in hfsplus_lookup
2025/04/18 05:24 upstream b5c6891b2c5b 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/04/14 04:12 upstream 8ffd015db85f 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/04/13 00:57 upstream ecd5d67ad602 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/04/11 19:56 upstream 900241a5cc15 12ba9c21 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/04/10 10:33 upstream 3b07108ada81 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/04/09 01:44 upstream bec7dcbc242c b133e63a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/04/07 18:11 upstream 0af2f6be1b42 a2ada0e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/04/01 22:09 upstream 08733088b566 d863cf4b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/03/28 09:55 upstream 1a9239bb4253 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/03/27 02:13 upstream 2df0c02dab82 89d30d73 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2025/03/25 03:29 upstream 38fec10eb60d 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386-root KMSAN: uninit-value in hfsplus_lookup
2023/12/17 17:11 upstream 3b8a9b2e6809 3222d10c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfsplus_lookup
* Struck through repros no longer work on HEAD.