loop2: detected capacity change from 0 to 32768
==================================================================
BUG: KASAN: slab-use-after-free in dtSplitPage+0x1bce/0x36a0
Write of size 1 at addr ffff888111de2000 by task syz.2.211/6213

CPU: 0 UID: 0 PID: 6213 Comm: syz.2.211 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_address_description+0x55/0x1e0
 print_report+0x58/0x70
 kasan_report+0x117/0x150
 dtSplitPage+0x1bce/0x36a0
 dtInsert+0x1080/0x5cb0
 jfs_symlink+0x8a1/0xfb0
 vfs_symlink+0x18b/0x330
 filename_symlinkat+0x1cd/0x410
 __se_sys_symlinkat+0x4e/0x2b0
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f866679e159
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:00007f86649f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 00007f8666a25fa0 RCX: 00007f866679e159
RDX: 00002000000005c0 RSI: ffffffffffffff9c RDI: 0000200000000700
RBP: 00007f866683506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8666a26038 R14: 00007f8666a25fa0 R15: 00007ffea87a9b48
 </TASK>

Allocated by task 6151:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x36b/0x720
 landlock_init_hierarchy_log+0x16c/0x5f0
 landlock_merge_ruleset+0x745/0xad0
 __se_sys_landlock_restrict_self+0x2c1/0xd50
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5005:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x650
 free_domain+0xf8/0x180
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30

The buggy address belongs to the object at ffff888111de2000
 which belongs to the cache kmalloc-cg-64 of size 64
The buggy address is located 0 bytes inside of
 freed 64-byte region [ffff888111de2000, ffff888111de2040)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888111de2600 pfn:0x111de2
memcg:ffff888111de2051
flags: 0x17ff00000000200(workingset|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 017ff00000000200 ffff888100049c80 ffffea0004453b90 ffffea0004453bd0
raw: ffff888111de2600 000000030020001e 00000000f5000000 ffff888111de2051
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5759, tgid 5758 (syz.1.27), ts 53558465111
 post_alloc_hook+0x1f9/0x250
 get_page_from_freelist+0x2209/0x2280
 __alloc_frozen_pages_noprof+0x217/0x5a0
 allocate_slab+0x7d/0x620
 refill_objects+0x2d5/0x350
 __pcs_replace_empty_main+0x2c8/0x6c0
 __kmalloc_noprof+0x47b/0x720
 landlock_init_hierarchy_log+0x16c/0x5f0
 landlock_merge_ruleset+0x745/0xad0
 __se_sys_landlock_restrict_self+0x2c1/0xd50
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5759 tgid 5758 ts 53557871920 stack trace:
 __free_frozen_pages+0xc93/0xd90
 __slab_free+0x274/0x2c0
 qlist_free_all+0x99/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x2b9/0x600
 prepare_creds+0x30/0x820
 __se_sys_landlock_restrict_self+0x19f/0xd50
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888111de1f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888111de1f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888111de2000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                   ^
 ffff888111de2080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888111de2100: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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