ERROR: (device loop3): txAbort: 
==================================================================
BUG: KASAN: slab-out-of-bounds in dtSplitPage+0xdc4/0x2cbc fs/jfs/jfs_dtree.c:-1
Read of size 1 at addr ffff0000f05edb1d by task syz.3.218/7815

CPU: 1 UID: 0 PID: 7815 Comm: syz.3.218 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xa8/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0xb0/0x110 mm/kasan/report.c:595
 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378
 dtSplitPage+0xdc4/0x2cbc fs/jfs/jfs_dtree.c:-1
 dtSplitUp fs/jfs/jfs_dtree.c:1092 [inline]
 dtInsert+0xccc/0x49c0 fs/jfs/jfs_dtree.c:871
 jfs_mkdir+0x5a4/0x8b4 fs/jfs/namei.c:270
 vfs_mkdir+0x284/0x424 fs/namei.c:4453
 do_mkdirat+0x1f8/0x4c8 fs/namei.c:4486
 __do_sys_mkdirat fs/namei.c:4503 [inline]
 __se_sys_mkdirat fs/namei.c:4501 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4501
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Allocated by task 7815:
 kasan_save_stack mm/kasan/common.c:56 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:77
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:573
 unpoison_slab_object mm/kasan/common.c:342 [inline]
 __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:368
 kasan_slab_alloc include/linux/kasan.h:252 [inline]
 slab_post_alloc_hook mm/slub.c:4970 [inline]
 slab_alloc_node mm/slub.c:5280 [inline]
 kmem_cache_alloc_lru_noprof+0x33c/0x64c mm/slub.c:5299
 jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105
 alloc_inode+0x68/0x19c fs/inode.c:346
 iget_locked+0x184/0x7e0 fs/inode.c:1445
 jfs_iget+0x30/0x3f8 fs/jfs/inode.c:29
 jfs_lookup+0x198/0x32c fs/jfs/namei.c:1469
 __lookup_slow+0x254/0x378 fs/namei.c:1816
 lookup_slow+0x5c/0x80 fs/namei.c:1833
 walk_component+0x270/0x364 fs/namei.c:2151
 lookup_last fs/namei.c:2652 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2676
 filename_lookup+0x1ac/0x454 fs/namei.c:2705
 user_path_at+0x50/0x74 fs/namei.c:3215
 __do_sys_chdir fs/open.c:561 [inline]
 __se_sys_chdir fs/open.c:555 [inline]
 __arm64_sys_chdir+0xb0/0x274 fs/open.c:555
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

The buggy address belongs to the object at ffff0000f05ed268
 which belongs to the cache jfs_ip of size 2216
The buggy address is located 13 bytes to the right of
 allocated 2216-byte region [ffff0000f05ed268, ffff0000f05edb10)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000f05e8928 pfn:0x1305e8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000c9a22501
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c4c7a780 dead000000000122 0000000000000000
raw: ffff0000f05e8928 00000000800d0006 00000000f5000000 ffff0000c9a22501
head: 05ffc00000000040 ffff0000c4c7a780 dead000000000122 0000000000000000
head: ffff0000f05e8928 00000000800d0006 00000000f5000000 ffff0000c9a22501
head: 05ffc00000000003 fffffdffc3c17a01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000f05eda00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000f05eda80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000f05edb00: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                            ^
 ffff0000f05edb80: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000f05edc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
read_mapping_page failed!
ERROR: (device loop3): txAbort: