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KASAN: out-of-bounds Read in ext4_xattr_set_entry

Status: upstream: reported C repro on 2024/05/13 18:18
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+7b995704ecf34efc252c@syzkaller.appspotmail.com
First crash: 326d, last: 7d00h
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2024/05/14 lts (merge base) 883d1a956208 C [report] KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/05/14 upstream (ToT) a5131c3fdf26 C Didn't crash
▶ ▼ Similar bugs (16)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 KASAN: use-after-free Read in ext4_xattr_set_entry (2) C done 7 1300d 1758d 1/1 fixed on 2021/10/13 07:23
android-5-15 KASAN: out-of-bounds Read in ext4_xattr_set_entry 1 655d 655d 0/2 auto-obsoleted due to no activity on 2023/09/17 07:02
upstream KASAN: out-of-bounds Read in ext4_xattr_set_entry ext4 C error 1321 53m 194d 0/28 upstream: reported C repro on 2024/09/22 00:16
android-54 KASAN: out-of-bounds Read in ext4_xattr_set_entry ext4 C 14 709d 1475d 0/2 auto-obsoleted due to no activity on 2023/08/23 09:06
linux-5.15 KASAN: out-of-bounds Read in ext4_xattr_set_entry C 3 18h06m 20d 0/3 upstream: reported C repro on 2025/03/15 11:50
linux-6.1 KASAN: out-of-bounds Read in ext4_xattr_set_entry missing-backport origin:lts-only C inconclusive 367 6d14h 686d 0/3 upstream: reported C repro on 2023/05/19 08:42
android-5-10 KASAN: out-of-bounds Read in ext4_xattr_set_entry C inconclusive 7 13d 562d 0/2 upstream: reported C repro on 2023/09/20 02:40
linux-4.14 KASAN: out-of-bounds Read in ext4_xattr_set_entry C error 2 939d 1453d 0/1 upstream: reported C repro on 2021/04/12 14:20
android-5-15 general protection fault in ext4_xattr_set_entry C error 1 764d 844d 2/2 fixed on 2023/03/28 12:29
android-5-10 general protection fault in ext4_xattr_set_entry (4) C error 62 667d 696d 2/2 fixed on 2023/06/07 17:22
android-5-10 general protection fault in ext4_xattr_set_entry (2) ext4 C error 423 702d 902d 2/2 fixed on 2023/05/03 13:06
upstream KASAN: use-after-free Read in ext4_xattr_set_entry (5) ext4 2 984d 1042d 0/28 auto-obsoleted due to no activity on 2022/11/22 17:19
android-5-10 general protection fault in ext4_xattr_set_entry (3) C error 9 698d 701d 2/2 fixed on 2023/05/08 19:06
upstream KASAN: use-after-free Read in ext4_xattr_set_entry (4) ext4 C error done 21 1138d 1525d 20/28 fixed on 2022/03/28 10:17
android-5-10 general protection fault in ext4_xattr_set_entry C error 2 925d 939d 0/2 closed as invalid on 2022/09/26 18:30
android-5-10 general protection fault in ext4_xattr_set_entry (5) C done 11 664d 666d 2/2 fixed on 2023/06/13 02:27
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2025/02/04 20:59 15m retest repro android14-6.1 report log
2025/02/04 20:59 54m retest repro android14-6.1 report log
2024/05/27 18:35 12m retest repro android14-6.1 report log
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
2024/10/21 05:01 1h12m bisect fix android14-6.1 OK (0) job log log
2024/09/20 00:28 2h02m bisect fix android14-6.1 OK (0) job log log
2024/08/16 14:46 1h18m bisect fix android14-6.1 OK (0) job log log
2024/07/06 11:23 1h04m bisect fix android14-6.1 OK (0) job log log

Sample crash report:
EXT4-fs warning (device loop0): ext4_expand_extra_isize_ea:2809: Unable to expand inode 15. Delete some EAs or run e2fsck.
EXT4-fs (loop0): 1 truncate cleaned up
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: writeback.
==================================================================
BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x909/0x1fa0 fs/ext4/xattr.c:1732
Read of size 18446744073709551572 at addr ffff888110289850 by task syz-executor341/297

CPU: 1 PID: 297 Comm: syz-executor341 Not tainted 6.1.128-syzkaller-00002-g44db4837f75e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:427
 kasan_report+0x13c/0x170 mm/kasan/report.c:531
 kasan_check_range+0x294/0x2a0 mm/kasan/generic.c:189
 memmove+0x2d/0x70 mm/kasan/shadow.c:54
 ext4_xattr_set_entry+0x909/0x1fa0 fs/ext4/xattr.c:1732
 ext4_xattr_block_set+0x99c/0x37f0 fs/ext4/xattr.c:1979
 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline]
 ext4_expand_extra_isize_ea+0x10eb/0x1c40 fs/ext4/xattr.c:2783
 __ext4_expand_extra_isize+0x31a/0x420 fs/ext4/inode.c:5938
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5981 [inline]
 __ext4_mark_inode_dirty+0x4bb/0x7d0 fs/ext4/inode.c:6059
 __ext4_unlink+0x6ed/0xba0 fs/ext4/namei.c:3341
 ext4_unlink+0x142/0x3f0 fs/ext4/namei.c:3370
 vfs_unlink+0x38c/0x630 fs/namei.c:4321
 do_unlinkat+0x483/0x920 fs/namei.c:4389
 __do_sys_unlink fs/namei.c:4437 [inline]
 __se_sys_unlink fs/namei.c:4435 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4435
 x64_sys_call+0x289/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f78a73c4a39
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffea22e9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000400000000040 RCX: 00007f78a73c4a39
RDX: 00007f78a73c4a39 RSI: 00007f78a73c4a39 RDI: 0000400000000180
RBP: 0031656c69662f2e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0032656c69662f2e
R13: 00007fffea22ebd8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Allocated by task 297:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:379 [inline]
 __kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc_node_track_caller+0xb3/0x1e0 mm/slab_common.c:958
 kmemdup+0x29/0x60 mm/util.c:134
 _Z7kmemdupPKvU17pass_object_size0mj include/linux/fortify-string.h:585 [inline]
 ext4_xattr_block_set+0x80f/0x37f0 fs/ext4/xattr.c:1927
 ext4_xattr_move_to_block fs/ext4/xattr.c:2616 [inline]
 ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline]
 ext4_expand_extra_isize_ea+0x10eb/0x1c40 fs/ext4/xattr.c:2783
 __ext4_expand_extra_isize+0x31a/0x420 fs/ext4/inode.c:5938
 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5981 [inline]
 __ext4_mark_inode_dirty+0x4bb/0x7d0 fs/ext4/inode.c:6059
 __ext4_unlink+0x6ed/0xba0 fs/ext4/namei.c:3341
 ext4_unlink+0x142/0x3f0 fs/ext4/namei.c:3370
 vfs_unlink+0x38c/0x630 fs/namei.c:4321
 do_unlinkat+0x483/0x920 fs/namei.c:4389
 __do_sys_unlink fs/namei.c:4437 [inline]
 __se_sys_unlink fs/namei.c:4435 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4435
 x64_sys_call+0x289/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:88
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff888110289800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 80 bytes inside of
 1024-byte region [ffff888110289800, ffff888110289c00)

The buggy address belongs to the physical page:
page:ffffea000440a200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110288
head:ffffea000440a200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea000441bc00 dead000000000002 ffff888100043080
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 92, tgid 92 (S02sysctl), ts 4536907243, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x213/0x220 mm/page_alloc.c:2637
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2644
 get_page_from_freelist+0x3a98/0x3b10 mm/page_alloc.c:4539
 __alloc_pages+0x234/0x610 mm/page_alloc.c:5837
 alloc_slab_page+0x6c/0xf0
 allocate_slab mm/slub.c:1962 [inline]
 new_slab+0x90/0x3e0 mm/slub.c:2015
 ___slab_alloc+0x6f9/0xb80 mm/slub.c:3203
 __slab_alloc+0x5d/0xa0 mm/slub.c:3302
 slab_alloc_node mm/slub.c:3387 [inline]
 __kmem_cache_alloc_node+0x207/0x2a0 mm/slub.c:3462
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc+0xa3/0x1e0 mm/slab_common.c:951
 kmalloc_array include/linux/slab.h:615 [inline]
 kcalloc include/linux/slab.h:646 [inline]
 alloc_pipe_info+0x204/0x4b0 fs/pipe.c:812
 get_pipe_inode fs/pipe.c:886 [inline]
 create_pipe_files+0x89/0x6e0 fs/pipe.c:918
 __do_pipe_flags+0x4c/0x210 fs/pipe.c:967
 do_pipe2+0xd0/0x300 fs/pipe.c:1015
 __do_sys_pipe2 fs/pipe.c:1033 [inline]
 __se_sys_pipe2 fs/pipe.c:1031 [inline]
 __x64_sys_pipe2+0x5a/0x70 fs/pipe.c:1031
 x64_sys_call+0x7bb/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:294
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888110289700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888110289780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888110289800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                 ^
 ffff888110289880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888110289900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================

Crashes (202):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/09 09:11 android14-6.1 44db4837f75e 163f510d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/08 20:51 android14-6.1 44db4837f75e 7e3bd60d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/02/28 00:50 android14-6.1 fa3cc11118de 6a8fcbc4 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/11/02 04:57 android14-6.1 fadb08b36671 f00eed24 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/05/13 18:17 android14-6.1 4d55129aea65 9026e142 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/28 22:20 android14-6.1 c1fd50266bd6 9a1a9e31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/28 11:46 android14-6.1 c1fd50266bd6 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/23 06:08 android14-6.1 5145d157731f 4e8d3850 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/18 18:13 android14-6.1 2afd0800a730 22a6c2b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/18 01:40 android14-6.1 f3c4686f770c ce3352cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/15 07:04 android14-6.1 4da91a8e563c e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/14 19:07 android14-6.1 27895588a299 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/14 02:48 android14-6.1 70d032fba5f4 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/10 06:09 android14-6.1 44db4837f75e 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/06 00:47 android14-6.1 471a10d3af3b 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/01 02:52 android14-6.1 6b227a1f7460 67cf5345 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/03/01 02:52 android14-6.1 6b227a1f7460 67cf5345 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/02/28 00:19 android14-6.1 fa3cc11118de 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/21 19:35 android14-6.1 d12538e9da37 da72ac06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/20 20:23 android14-6.1 d12538e9da37 6e87cfa2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/20 18:24 android14-6.1 d12538e9da37 6e87cfa2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/20 13:00 android14-6.1 d12538e9da37 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/20 09:11 android14-6.1 d12538e9da37 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/20 02:45 android14-6.1 d12538e9da37 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/20 01:00 android14-6.1 d12538e9da37 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/19 06:50 android14-6.1 d12538e9da37 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/19 06:49 android14-6.1 d12538e9da37 f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/12 10:23 android14-6.1 770852bf7d99 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/02 22:32 android14-6.1 e2b9748880b9 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2025/01/01 22:14 android14-6.1 e2b9748880b9 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/31 17:32 android14-6.1 e2b9748880b9 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/30 10:07 android14-6.1 3f924195e222 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/29 20:32 android14-6.1 3f924195e222 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/28 22:10 android14-6.1 3f924195e222 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/28 10:26 android14-6.1 3f924195e222 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/27 21:33 android14-6.1 c141a306c4ba d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/27 08:49 android14-6.1 4c2d86d81fa6 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/26 07:18 android14-6.1 4c2d86d81fa6 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/26 02:11 android14-6.1 4c2d86d81fa6 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/24 19:56 android14-6.1 4c2d86d81fa6 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/21 13:46 android14-6.1 3e3f2b9e9fca d7f584ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/20 11:31 android14-6.1 3e3f2b9e9fca 0f61b415 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/19 03:04 android14-6.1 e50cf165f4e7 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/16 18:33 android14-6.1 367540fdf981 eec85da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/16 14:18 android14-6.1 367540fdf981 eec85da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/15 04:25 android14-6.1 22b7ded8b55b 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
2024/12/15 01:01 android14-6.1 22b7ded8b55b 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: out-of-bounds Read in ext4_xattr_set_entry
* Struck through repros no longer work on HEAD.