ERROR: (device loop9): txCommit: 
read_mapping_page failed!
ERROR: (device loop9): txCommit: 
==================================================================
BUG: KASAN: slab-out-of-bounds in dtSplitPage+0x1248/0x37c0
Read of size 1 at addr ffff888167bf7695 by task syz.9.2601/19526

CPU: 0 UID: 0 PID: 19526 Comm: syz.9.2601 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+0xe8/0x150
 print_report+0xba/0x230
 kasan_report+0x117/0x150
 dtSplitPage+0x1248/0x37c0
 dtInsert+0x107a/0x5de0
 jfs_mkdir+0x783/0xb00
 vfs_mkdir+0x413/0x630
 do_mkdirat+0x27d/0x510
 __x64_sys_mkdir+0x6c/0x80
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f758239acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f75832ff028 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f7582615fa0 RCX: 00007f758239acb9
RDX: 0000000000000000 RSI: 00000000000000a5 RDI: 00002000000000c0
RBP: 00007f7582408bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7582616038 R14: 00007f7582615fa0 R15: 00007fff03457c88
 </TASK>

Allocated by task 19526:
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_lru_noprof+0x35f/0x6c0
 jfs_alloc_inode+0x28/0x70
 alloc_inode+0x6a/0x1b0
 iget_locked+0x131/0x6a0
 jfs_iget+0x24/0x470
 jfs_lookup+0x220/0x420
 __lookup_slow+0x2b7/0x410
 lookup_slow+0x53/0x70
 path_lookupat+0x3f5/0x8c0
 filename_lookup+0x256/0x5d0
 user_path_at+0x3a/0x60
 __se_sys_chdir+0x98/0x280
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888167bf6de0
 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 [ffff888167bf6de0, ffff888167bf7688)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x167bf0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88816cae9c01
ksm flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88816897a3c0 ffffea0006a56200 0000000000000003
raw: 0000000000000000 00000000800d000d 00000000f5000000 ffff88816cae9c01
head: 057ff00000000040 ffff88816897a3c0 ffffea0006a56200 0000000000000003
head: 0000000000000000 00000000800d000d 00000000f5000000 ffff88816cae9c01
head: 057ff00000000003 ffffea00059efc01 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 6570, tgid 6569 (syz.4.131), ts 83804372659, free_ts 81235922086
 post_alloc_hook+0x231/0x280
 get_page_from_freelist+0x23a1/0x2440
 __alloc_frozen_pages_noprof+0x18d/0x380
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x86/0x3a0
 ___slab_alloc+0xd90/0x1790
 __slab_alloc+0x65/0x100
 kmem_cache_alloc_lru_noprof+0x3ed/0x6c0
 jfs_alloc_inode+0x28/0x70
 alloc_inode+0x6a/0x1b0
 new_inode+0x22/0x170
 jfs_fill_super+0x569/0xd80
 get_tree_bdev_flags+0x431/0x4f0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x329/0xa50
 __se_sys_mount+0x31d/0x420
page last free pid 6449 tgid 6449 stack trace:
 __free_frozen_pages+0xb81/0xce0
 __slab_free+0x2ce/0x320
 qlist_free_all+0x97/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_cache_noprof+0x36f/0x6e0
 kernfs_fop_open+0x397/0xca0
 do_dentry_open+0x785/0x14e0
 vfs_open+0x3b/0x340
 path_openat+0x2e08/0x3860
 do_filp_open+0x22d/0x490
 do_sys_openat2+0x12f/0x220
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888167bf7580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888167bf7600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888167bf7680: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                         ^
 ffff888167bf7700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888167bf7780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
