ERROR: (device loop1): txCommit: 
read_mapping_page failed!
ERROR: (device loop1): txCommit: 
==================================================================
BUG: KASAN: slab-out-of-bounds in dtSplitPage+0x12c6/0x3b20
Read of size 1 at addr ffff88811776d275 by task syz.1.314/7410

CPU: 0 UID: 0 PID: 7410 Comm: syz.1.314 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 print_report+0xca/0x240
 kasan_report+0x118/0x150
 dtSplitPage+0x12c6/0x3b20
 dtInsert+0x109b/0x5f40
 jfs_mkdir+0x6ec/0xa70
 vfs_mkdir+0x306/0x510
 do_mkdirat+0x247/0x590
 __x64_sys_mkdirat+0x87/0xa0
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f564fd8d717
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5650c41e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f5650c41ef0 RCX: 00007f564fd8d717
RDX: 00000000000001ff RSI: 0000200000000100 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000200000000240 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000100
R13: 00007f5650c41eb0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

The buggy address belongs to the object at ffff88811776d268
 which belongs to the cache jfs_ip of size 2216
The buggy address is located 13 bytes inside of
 allocated 2216-byte region [ffff88811776d268, ffff88811776db10)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x117768
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff888112ff2201
flags: 0x17ff00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 017ff00000000040 ffff8881027e8000 dead000000000122 0000000000000000
raw: 0000000000000000 00000000800d000d 00000000f5000000 ffff888112ff2201
head: 017ff00000000040 ffff8881027e8000 dead000000000122 0000000000000000
head: 0000000000000000 00000000800d000d 00000000f5000000 ffff888112ff2201
head: 017ff00000000003 ffffea00045dda01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0xd2050(__GFP_RECLAIMABLE|__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 6598, tgid 6597 (syz.1.153), ts 77665557601, free_ts 0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x2365/0x2440
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x96/0x350
 ___slab_alloc+0xe94/0x18a0
 __slab_alloc+0x65/0x100
 kmem_cache_alloc_lru_noprof+0x3fe/0x6e0
 jfs_alloc_inode+0x28/0x70
 alloc_inode+0x6a/0x1b0
 new_inode+0x22/0x170
 ialloc+0x4c/0x8f0
 jfs_symlink+0x1c4/0xe60
 vfs_symlink+0x143/0x2f0
 do_symlinkat+0x1b1/0x3f0
 __x64_sys_symlink+0x7a/0x90
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88811776d100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88811776d180: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
>ffff88811776d200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff88811776d280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88811776d300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
