==================================================================
BUG: KASAN: slab-out-of-bounds in dtSplitPage+0xd00/0x27e8 fs/jfs/jfs_dtree.c:-1
Read of size 1 at addr ffff0000f9c6d2d5 by task syz.8.410/6801

CPU: 1 PID: 6801 Comm: syz.8.410 Not tainted 6.1.135-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x88/0x220 mm/kasan/report.c:316
 print_report+0x50/0x68 mm/kasan/report.c:427
 kasan_report+0xa8/0x100 mm/kasan/report.c:531
 __asan_report_load1_noabort+0x2c/0x38 mm/kasan/report_generic.c:348
 dtSplitPage+0xd00/0x27e8 fs/jfs/jfs_dtree.c:-1
 dtSplitUp fs/jfs/jfs_dtree.c:1092 [inline]
 dtInsert+0xc0c/0x55ac fs/jfs/jfs_dtree.c:871
 jfs_symlink+0x66c/0xd58 fs/jfs/namei.c:1019
 vfs_symlink+0x238/0x3b0 fs/namei.c:4471
 do_symlinkat+0x174/0x350 fs/namei.c:4500
 __do_sys_symlinkat fs/namei.c:4517 [inline]
 __se_sys_symlinkat fs/namei.c:4514 [inline]
 __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4514
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Allocated by task 6768:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_alloc_info+0x28/0x34 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x70/0x88 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x74/0x43c mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc_lru+0x1b0/0x298 mm/slub.c:3429
 alloc_inode_sb include/linux/fs.h:3245 [inline]
 jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105
 alloc_inode fs/inode.c:261 [inline]
 iget_locked+0x178/0x7c4 fs/inode.c:1373
 jfs_iget+0x30/0x374 fs/jfs/inode.c:29
 jfs_lookup+0x198/0x32c fs/jfs/namei.c:1467
 __lookup_slow+0x24c/0x370 fs/namei.c:1690
 lookup_slow+0x5c/0x80 fs/namei.c:1707
 walk_component fs/namei.c:1998 [inline]
 link_path_walk+0x76c/0xc6c fs/namei.c:2325
 path_parentat fs/namei.c:2526 [inline]
 __filename_parentat+0x1c4/0x524 fs/namei.c:2550
 filename_parentat fs/namei.c:2568 [inline]
 do_renameat2+0x210/0xa54 fs/namei.c:4943
 __do_sys_renameat2 fs/namei.c:5060 [inline]
 __se_sys_renameat2 fs/namei.c:5057 [inline]
 __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5057
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

The buggy address belongs to the object at ffff0000f9c6ca00
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 21 bytes to the right of
 2240-byte region [ffff0000f9c6ca00, ffff0000f9c6d2c0)

The buggy address belongs to the physical page:
page:00000000a42c80a6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x139c68
head:00000000a42c80a6 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000efa5c101
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c6ee5e00
raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff0000efa5c101
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000f9c6d180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000f9c6d200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000f9c6d280: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
                                                 ^
 ffff0000f9c6d300: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff0000f9c6d380: 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 loop8): txAbort: