jfs: Unknown parameter ''
loop3: detected capacity change from 0 to 32768
==================================================================
BUG: KASAN: slab-use-after-free in dtSplitPage+0x1bce/0x36a0
Write of size 1 at addr ffff88810d331000 by task syz.3.1999/18798

CPU: 0 UID: 0 PID: 18798 Comm: syz.3.1999 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted:
Tainted: [L]=SOFTLOCKUP
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: 0033:0x7fa9bad9e159
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:00007fa9bbc26028 EFLAGS: 00000246 ORIG_RAX: 000000000000010a
RAX: ffffffffffffffda RBX: 00007fa9bb025fa0 RCX: 00007fa9bad9e159
RDX: 00002000000005c0 RSI: ffffffffffffff9c RDI: 0000200000000700
RBP: 00007fa9bae35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa9bb026038 R14: 00007fa9bb025fa0 R15: 00007ffd3d3503c8
 </TASK>

Allocated by task 18652:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x321/0x600
 kmem_cache_free+0x156/0x650
 vms_complete_munmap_vmas+0x897/0xbe0
 __mmap_complete+0xab/0x4b0
 mmap_region+0x11c2/0x23a0
 do_mmap+0xe0a/0x1300
 vm_mmap_pgoff+0x272/0x4e0
 ksys_mmap_pgoff+0x4dc/0x760
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 15:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x650
 slab_free_after_rcu_debug+0x62/0x220
 rcu_core+0x926/0x1260
 handle_softirqs+0x226/0x860
 run_ksoftirqd+0x36/0x60
 smpboot_thread_fn+0x565/0xa70
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30

Last potentially related work creation:
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 call_rcu+0xee/0x8b0
 kmem_cache_free+0x471/0x650
 vms_complete_munmap_vmas+0x897/0xbe0
 __mmap_complete+0xab/0x4b0
 mmap_region+0x11c2/0x23a0
 do_mmap+0xe0a/0x1300
 vm_mmap_pgoff+0x272/0x4e0
 ksys_mmap_pgoff+0x4dc/0x760
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88810d331000
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 freed 32-byte region [ffff88810d331000, ffff88810d331020)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88810d3318c0 pfn:0x10d331
flags: 0x17ff00000000200(workingset|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 017ff00000000200 ffff888100041780 ffffea00043aaf90 ffffea00044b61d0
raw: ffff88810d3318c0 000000000040003e 00000000f5000000 0000000000000000
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 12053, tgid 12053 (syz-executor), ts 343505900938
 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
 security_sk_alloc+0x52/0x360
 sk_prot_alloc+0x101/0x210
 sk_alloc+0x3a/0x390
 unix_create1+0xb0/0x7c0
 unix_create+0x14c/0x1d0
 __sock_create+0x4b3/0x9d0
 __sys_socket+0xd6/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0x166/0x520
page last free pid 15 tgid 15 ts 343460904456 stack trace:
 __free_frozen_pages+0xc93/0xd90
 tlb_remove_table_rcu+0x85/0x100
 rcu_core+0x926/0x1260
 handle_softirqs+0x226/0x860
 run_ksoftirqd+0x36/0x60
 smpboot_thread_fn+0x565/0xa70
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30

Memory state around the buggy address:
 ffff88810d330f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88810d330f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88810d331000: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
                   ^
 ffff88810d331080: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
 ffff88810d331100: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
==================================================================
