ERROR: (device loop0): txAbort: 
read_mapping_page failed!
ERROR: (device loop0): txAbort: 
==================================================================
BUG: KASAN: slab-out-of-bounds in dtSplitPage+0xd10/0x2928 fs/jfs/jfs_dtree.c:-1
Read of size 1 at addr ffff0000de7ec055 by task syz.0.16/4981

CPU: 0 PID: 4981 Comm: syz.0.16 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call trace:
 dump_backtrace+0x0/0x458 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 print_address_description+0x78/0x30c mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xec/0x158 mm/kasan/report.c:451
 __asan_report_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306
 dtSplitPage+0xd10/0x2928 fs/jfs/jfs_dtree.c:-1
 dtSplitUp fs/jfs/jfs_dtree.c:1092 [inline]
 dtInsert+0xc44/0x5614 fs/jfs/jfs_dtree.c:871
 jfs_mkdir+0x600/0x910 fs/jfs/namei.c:270
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4073
 do_mkdirat+0x1c0/0x514 fs/namei.c:4098
 __do_sys_mkdirat fs/namei.c:4113 [inline]
 __se_sys_mkdirat fs/namei.c:4111 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4111
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Allocated by task 4981:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x8c/0xcc mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x74/0x3f8 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x1d8/0x3d4 mm/slub.c:3238
 jfs_alloc_inode+0x24/0x60 fs/jfs/super.c:105
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x178/0x710 fs/inode.c:1308
 jfs_iget+0x30/0x3e4 fs/jfs/inode.c:29
 jfs_lookup+0x1c0/0x378 fs/jfs/namei.c:1469
 __lookup_slow+0x25c/0x39c fs/namei.c:1671
 lookup_slow+0x5c/0x80 fs/namei.c:1688
 walk_component+0x2b0/0x3a8 fs/namei.c:1984
 link_path_walk+0x590/0xbe0 fs/namei.c:-1
 path_parentat fs/namei.c:2510 [inline]
 __filename_parentat+0x1d4/0x548 fs/namei.c:2534
 filename_parentat fs/namei.c:2552 [inline]
 do_renameat2+0x240/0xcfc fs/namei.c:4909
 __do_sys_renameat2 fs/namei.c:5026 [inline]
 __se_sys_renameat2 fs/namei.c:5023 [inline]
 __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5023
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000de7eb780
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 21 bytes to the right of
 2240-byte region [ffff0000de7eb780, ffff0000de7ec040)
The buggy address belongs to the page:
page:00000000b58d52ac refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e7e8
head:00000000b58d52ac order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000cf975101
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c68cb500
raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff0000cf975101
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000de7ebf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000de7ebf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000de7ec000: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                                 ^
 ffff0000de7ec080: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff0000de7ec100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
find_entry called with index = 0
read_mapping_page failed!
ERROR: (device loop0): txAbort: