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BUG: KASAN: slab-use-after-free in _raw_spin_lock_irqsave+0x40/0x60
Read of size 1 at addr ffff888171c4e8d8 by task jfsCommit/117

CPU: 1 UID: 0 PID: 117 Comm: jfsCommit Tainted: G             L      syzkaller #0 PREEMPT(full) 
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_report+0xba/0x230
 kasan_report+0x117/0x150
 __kasan_check_byte+0x2a/0x40
 lock_acquire+0x84/0x330
 _raw_spin_lock_irqsave+0x40/0x60
 __mutex_lock+0x3cb/0x1300
 jfs_syncpt+0x25/0x90
 txEnd+0x2e5/0x530
 jfs_lazycommit+0x5b8/0xaa0
 kthread+0x726/0x8b0
 ret_from_fork+0x51b/0xa40
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 18692:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x3d1/0x6e0
 lmLogOpen+0x2d1/0xfa0
 jfs_mount_rw+0xee/0x670
 jfs_fill_super+0x754/0xd80
 get_tree_bdev_flags+0x431/0x4f0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x329/0xa50
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 7819:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1be/0x650
 lmLogClose+0x297/0x520
 jfs_umount+0x2ef/0x3c0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x135/0x2c0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x2b7/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888171c4e800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 216 bytes inside of
 freed 1024-byte region [ffff888171c4e800, ffff888171c4ec00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x171c48
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff888100041dc0 ffffea0006e6f200 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 057ff00000000040 ffff888100041dc0 ffffea0006e6f200 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 057ff00000000003 ffffea0005c71201 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 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 13, tgid 13 (kworker/u8:1), ts 67453760925, free_ts 67443260956
 post_alloc_hook+0x231/0x280
 get_page_from_freelist+0x24dc/0x2580
 __alloc_frozen_pages_noprof+0x18d/0x380
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x86/0x3a0
 ___slab_alloc+0xd82/0x1760
 __slab_alloc+0x65/0x100
 __kmalloc_noprof+0x46c/0x7e0
 ___neigh_create+0x6d5/0x2230
 ip6_finish_output2+0x1038/0x1360
 ip6_output+0x340/0x550
 ndisc_send_skb+0xbaa/0x14e0
 ndisc_send_ns+0xd7/0x160
 addrconf_dad_work+0xac4/0x14c0
 process_scheduled_works+0xaec/0x17a0
 worker_thread+0x89f/0xd90
page last free pid 5831 tgid 5831 stack trace:
 __free_frozen_pages+0xbb9/0xd10
 __slab_free+0x2ce/0x320
 qlist_free_all+0x97/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_cache_noprof+0x36f/0x6e0
 netdevice_event+0x3cb/0x8f0
 notifier_call_chain+0x19d/0x3a0
 __dev_notify_flags+0x1a9/0x310
 netif_change_flags+0xe8/0x1a0
 do_setlink+0xf82/0x4590
 rtnl_newlink+0x15a9/0x1be0
 rtnetlink_rcv_msg+0x7d5/0xbe0
 netlink_rcv_skb+0x232/0x4b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40

Memory state around the buggy address:
 ffff888171c4e780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888171c4e800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888171c4e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff888171c4e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888171c4e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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