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BUG: KASAN: slab-use-after-free in _raw_spin_lock_irqsave+0x40/0x60
Read of size 1 at addr ffff88811c7b70d8 by task jfsCommit/116

CPU: 1 UID: 0 PID: 116 Comm: jfsCommit 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
 __kasan_check_byte+0x2a/0x40
 lock_acquire+0x79/0x2e0
 _raw_spin_lock_irqsave+0x40/0x60
 __mutex_lock+0x3af/0x12d0
 jfs_syncpt+0x25/0x90
 txEnd+0x2e5/0x530
 jfs_lazycommit+0x5d6/0xac0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 7582:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x318/0x660
 lmLogOpen+0x2d1/0xf90
 jfs_mount_rw+0xf3/0x670
 jfs_fill_super+0x772/0xd90
 get_tree_bdev_flags+0x430/0x4f0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x319/0xdc0
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0x170/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 7171:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c1/0x630
 lmLogClose+0x296/0x530
 jfs_umount+0x2ca/0x3a0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x3d3/0x460
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0x18d/0x5e0
 do_syscall_64+0x357/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88811c7b7000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 216 bytes inside of
 freed 1024-byte region [ffff88811c7b7000, ffff88811c7b7400)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88811c7b6800 pfn:0x11c7b0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x17ff00000000240(workingset|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 017ff00000000240 ffff888100041dc0 ffff888100040888 ffffea00043f1010
raw: ffff88811c7b6800 0000000800100008 00000000f5000000 0000000000000000
head: 017ff00000000240 ffff888100041dc0 ffff888100040888 ffffea00043f1010
head: ffff88811c7b6800 0000000800100008 00000000f5000000 0000000000000000
head: 017ff00000000003 ffffea000471ec01 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 Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5599, tgid 5599 (syz-executor), ts 55864638303, free_ts 0
 post_alloc_hook+0x231/0x280
 get_page_from_freelist+0x2503/0x25a0
 __alloc_frozen_pages_noprof+0x18d/0x380
 allocate_slab+0x77/0x660
 refill_objects+0x32e/0x3c0
 __pcs_replace_empty_main+0x2f9/0x5e0
 __kmalloc_node_noprof+0x56a/0x7b0
 qdisc_alloc+0x92/0x9d0
 qdisc_create_dflt+0x8e/0x510
 dev_activate+0x37a/0x1150
 __dev_open+0x699/0x850
 __dev_change_flags+0x1da/0x6a0
 netif_change_flags+0x7c/0x1b0
 do_setlink+0xdd6/0x4670
 rtnl_newlink+0x15a4/0x1bd0
 rtnetlink_rcv_msg+0x802/0xc00
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88811c7b6f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88811c7b7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88811c7b7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff88811c7b7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811c7b7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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