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BUG: KASAN: slab-use-after-free in dtSearch+0x16b4/0x21b0
Read of size 1 at addr ffff88801ee63c9c by task syz.5.840/9526

CPU: 0 UID: 0 PID: 9526 Comm: syz.5.840 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
 dtSearch+0x16b4/0x21b0
 jfs_lookup+0x155/0x380
 path_openat+0x139a/0x3dd0
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe73138f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe732242038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fe7315e5fa0 RCX: 00007fe73138f7c9
RDX: 0000000000143042 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007fe7313f297f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000099 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe7315e6038 R14: 00007fe7315e5fa0 R15: 00007ffd67737f98
 </TASK>

Allocated by task 6009:
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_lru_noprof+0x36c/0x6e0
 jfs_alloc_inode+0x28/0x70
 alloc_inode+0x6a/0x1b0
 iget_locked+0x131/0x6a0
 jfs_iget+0x24/0x470
 jfs_fill_super+0x8ad/0xd80
 get_tree_bdev_flags+0x40e/0x4d0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x302/0xa10
 __se_sys_mount+0x313/0x410
 do_syscall_64+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 15:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x197/0x620
 rcu_core+0xd70/0x1870
 handle_softirqs+0x27d/0x850
 run_ksoftirqd+0x9b/0x100
 smpboot_thread_fn+0x542/0xa60
 kthread+0x711/0x8a0
 ret_from_fork+0x599/0xb30
 ret_from_fork_asm+0x1a/0x30

Last potentially related work creation:
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 call_rcu+0x157/0x9c0
 evict+0x931/0xae0
 evict_inodes+0x753/0x7e0
 generic_shutdown_super+0x9a/0x2c0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xff/0x4f0
 do_syscall_64+0x2d0/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88801ee636f0
 which belongs to the cache jfs_ip of size 2216
The buggy address is located 1452 bytes inside of
 freed 2216-byte region [ffff88801ee636f0, ffff88801ee63f98)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ee60
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88810b9d5a01
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff888166f9d280 dead000000000122 0000000000000000
raw: 0000000000000000 00000000800d000d 00000000f5000000 ffff88810b9d5a01
head: 00fff00000000040 ffff888166f9d280 dead000000000122 0000000000000000
head: 0000000000000000 00000000800d000d 00000000f5000000 ffff88810b9d5a01
head: 00fff00000000003 ffffea00007b9801 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 5834, tgid 5834 (syz-executor), ts 70181232922, free_ts 0
 post_alloc_hook+0x23d/0x2a0
 get_page_from_freelist+0x22f6/0x23d0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x86/0x3b0
 ___slab_alloc+0xf2b/0x1960
 __slab_alloc+0x65/0x100
 kmem_cache_alloc_lru_noprof+0x3fe/0x6e0
 jfs_alloc_inode+0x28/0x70
 alloc_inode+0x6a/0x1b0
 iget_locked+0x131/0x6a0
 jfs_iget+0x24/0x470
 jfs_lookup+0x1c5/0x380
 __lookup_slow+0x297/0x3d0
 lookup_slow+0x53/0x70
 path_lookupat+0x3f5/0x8c0
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88801ee63b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801ee63c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801ee63c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff88801ee63d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801ee63d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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