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KMSAN: uninit-value in hfs_revalidate_dentry

Status: upstream: reported C repro on 2022/11/25 09:56
Labels: hfs (incorrect?)
Reported-by: syzbot+3ae6be33a50b5aae4dab@syzkaller.appspotmail.com
First crash: 189d, last: 3h42m
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly hfs report (May 2023) 0 (1) 2023/05/30 08:18
[syzbot] Monthly hfs report (Apr 2023) 0 (1) 2023/04/27 13:32
[syzbot] KMSAN: uninit-value in hfs_revalidate_dentry 0 (2) 2023/02/10 12:21
▶ ▼ Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in native_apic_mem_write (2) kernel syz 148 101d 114d 0/24 auto-obsoleted due to no activity on 2023/05/13 00:04
upstream KMSAN: kernel-infoleak in copyout (2) net C 6709 16m 1162d 23/24 upstream: reported C repro on 2020/03/26 17:19
upstream KASAN: slab-out-of-bounds Read in ntfs_iget5 ntfs3 C done 3560 5h09m 406d 0/24 upstream: reported C repro on 2022/04/22 13:07
upstream KMSAN: uninit-value in hfsplus_delete_cat hfs C 542 9h52m 179d 0/24 upstream: reported C repro on 2022/12/05 09:19
upstream KMSAN: kernel-infoleak in _copy_to_iter (8) C 16910 5m 88d 23/24 internal: reported C repro on 2023/03/06 07:23
upstream KMSAN: uninit-value in inode_go_dump gfs2 7 31d 136d 0/24 upstream: reported on 2023/01/17 10:38
upstream KMSAN: uninit-value in reiserfs_new_inode (2) reiserfs 666 24d 190d 0/24 upstream: reported on 2022/11/24 06:39

Sample crash report:
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
=====================================================
BUG: KMSAN: uninit-value in hfs_ext_read_extent fs/hfs/extent.c:196 [inline]
BUG: KMSAN: uninit-value in hfs_get_block+0x92d/0x1620 fs/hfs/extent.c:366
 hfs_ext_read_extent fs/hfs/extent.c:196 [inline]
 hfs_get_block+0x92d/0x1620 fs/hfs/extent.c:366
 block_read_full_folio+0x4ff/0x11b0 fs/buffer.c:2271
 hfs_read_folio+0x55/0x60 fs/hfs/inode.c:39
 filemap_read_folio+0x148/0x4f0 mm/filemap.c:2426
 do_read_cache_folio+0x7c8/0xd90 mm/filemap.c:3553
 do_read_cache_page mm/filemap.c:3595 [inline]
 read_cache_page+0xfb/0x2f0 mm/filemap.c:3604
 read_mapping_page include/linux/pagemap.h:755 [inline]
 hfs_btree_open+0x928/0x1ae0 fs/hfs/btree.c:78
 hfs_mdb_get+0x260c/0x3000 fs/hfs/mdb.c:204
 hfs_fill_super+0x1fb1/0x2790 fs/hfs/super.c:406
 mount_bdev+0x628/0x920 fs/super.c:1359
 hfs_mount+0xcd/0xe0 fs/hfs/super.c:456
 legacy_get_tree+0x167/0x2e0 fs/fs_context.c:610
 vfs_get_tree+0xdc/0x5d0 fs/super.c:1489
 do_new_mount+0x7a9/0x16f0 fs/namespace.c:3145
 path_mount+0xf98/0x26a0 fs/namespace.c:3475
 do_mount fs/namespace.c:3488 [inline]
 __do_sys_mount fs/namespace.c:3697 [inline]
 __se_sys_mount+0x919/0x9e0 fs/namespace.c:3674
 __ia32_sys_mount+0x15b/0x1b0 fs/namespace.c:3674
 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+0x926/0x10a0 mm/page_alloc.c:5572
 alloc_pages+0xb4b/0xec0
 alloc_slab_page mm/slub.c:1851 [inline]
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x5c5/0x19b0 mm/slub.c:2051
 ___slab_alloc+0x132b/0x3790 mm/slub.c:3193
 __slab_alloc mm/slub.c:3292 [inline]
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc_lru+0x72f/0xb80 mm/slub.c:3483
 alloc_inode_sb include/linux/fs.h:3119 [inline]
 hfs_alloc_inode+0x80/0xf0 fs/hfs/super.c:165
 alloc_inode+0xad/0x4b0 fs/inode.c:259
 iget_locked+0x340/0xf80 fs/inode.c:1286
 hfs_btree_open+0x20d/0x1ae0 fs/hfs/btree.c:38
 hfs_mdb_get+0x2519/0x3000 fs/hfs/mdb.c:199
 hfs_fill_super+0x1fb1/0x2790 fs/hfs/super.c:406
 mount_bdev+0x628/0x920 fs/super.c:1359
 hfs_mount+0xcd/0xe0 fs/hfs/super.c:456
 legacy_get_tree+0x167/0x2e0 fs/fs_context.c:610
 vfs_get_tree+0xdc/0x5d0 fs/super.c:1489
 do_new_mount+0x7a9/0x16f0 fs/namespace.c:3145
 path_mount+0xf98/0x26a0 fs/namespace.c:3475
 do_mount fs/namespace.c:3488 [inline]
 __do_sys_mount fs/namespace.c:3697 [inline]
 __se_sys_mount+0x919/0x9e0 fs/namespace.c:3674
 __ia32_sys_mount+0x15b/0x1b0 fs/namespace.c:3674
 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: 5015 Comm: syz-executor119 Not tainted 6.2.0-rc7-syzkaller-80760-g8c89ecf5c13b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
=====================================================

Crashes (1361):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/02/10 12:21 https://github.com/google/kmsan.git master 8c89ecf5c13b 07980f9d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/06/02 08:23 https://github.com/google/kmsan.git master 2741f1b02117 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/06/02 07:15 https://github.com/google/kmsan.git master 2741f1b02117 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/06/01 20:41 https://github.com/google/kmsan.git master 2741f1b02117 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/06/01 08:26 https://github.com/google/kmsan.git master 2741f1b02117 babc4389 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/31 12:46 https://github.com/google/kmsan.git master 2741f1b02117 09898419 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/31 09:50 https://github.com/google/kmsan.git master 2741f1b02117 09898419 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/30 23:41 https://github.com/google/kmsan.git master 2741f1b02117 09898419 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/30 19:45 https://github.com/google/kmsan.git master 2741f1b02117 8d5c7541 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/30 13:53 https://github.com/google/kmsan.git master 2741f1b02117 8d5c7541 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/30 08:51 https://github.com/google/kmsan.git master f93f2feda5d6 8d5c7541 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/30 03:37 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/30 01:54 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/29 19:30 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/29 13:26 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/29 00:45 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/28 13:11 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/28 13:11 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/27 21:43 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/27 19:06 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/27 13:16 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/27 09:08 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/27 07:48 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/27 03:03 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/25 22:34 https://github.com/google/kmsan.git master f93f2feda5d6 0513b3e6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/25 22:18 https://github.com/google/kmsan.git master f93f2feda5d6 0513b3e6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/25 06:00 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/25 04:20 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/23 17:41 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/23 15:06 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/05/23 11:33 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2022/11/25 08:17 https://github.com/google/kmsan.git master a472f15b3d1e 74a66371 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2022/11/25 01:34 https://github.com/google/kmsan.git master e889f323ec44 62e26685 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_revalidate_dentry
2023/06/02 11:16 https://github.com/google/kmsan.git master 2741f1b02117 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/06/02 01:26 https://github.com/google/kmsan.git master 2741f1b02117 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/06/01 22:32 https://github.com/google/kmsan.git master 2741f1b02117 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/30 05:59 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/29 17:13 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/28 23:09 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/28 22:06 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/28 10:48 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/28 01:23 https://github.com/google/kmsan.git master f93f2feda5d6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/26 01:20 https://github.com/google/kmsan.git master f93f2feda5d6 0513b3e6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/25 18:58 https://github.com/google/kmsan.git master f93f2feda5d6 0513b3e6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/25 14:57 https://github.com/google/kmsan.git master f93f2feda5d6 0513b3e6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/24 08:02 https://github.com/google/kmsan.git master f93f2feda5d6 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_get_block
2023/05/15 08:48 https://github.com/google/kmsan.git master 46e8b6e7cfeb 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kmsan-gce-386 KMSAN: uninit-value in hfs_extend_file
* Struck through repros no longer work on HEAD.