 ... Log Wrap ... Log Wrap ... Log Wrap ...
==================================================================
BUG: KASAN: slab-use-after-free in txEnd+0x32d/0x530
Write of size 8 at addr ffff88816de5e840 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+0xca/0x240
 kasan_report+0x118/0x150
 kasan_check_range+0x2b0/0x2c0
 txEnd+0x32d/0x530
 jfs_lazycommit+0x5ba/0xa90
 kthread+0x711/0x8a0
 ret_from_fork+0x510/0xa50
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 11004:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x3e2/0x700
 lmLogOpen+0x2d1/0xfa0
 jfs_mount_rw+0xe9/0x670
 jfs_fill_super+0x754/0xd80
 get_tree_bdev_flags+0x40e/0x4d0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x302/0xa10
 __se_sys_mount+0x313/0x410
 do_syscall_64+0xec/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 9269:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c0/0x660
 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+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xef/0x4e0
 do_syscall_64+0x2b7/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88816de5e800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 64 bytes inside of
 freed 1024-byte region [ffff88816de5e800, ffff88816de5ec00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16de58
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 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 057ff00000000040 ffff888100041dc0 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 057ff00000000003 ffffea0005b79601 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 12, tgid 12 (kworker/u8:0), ts 72627445595, free_ts 72617725397
 post_alloc_hook+0x234/0x290
 get_page_from_freelist+0x24e0/0x2580
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x86/0x3b0
 ___slab_alloc+0xe53/0x1820
 __slab_alloc+0x65/0x100
 __kmalloc_noprof+0x47d/0x800
 ___neigh_create+0x6d5/0x2230
 ip6_finish_output2+0x1038/0x1360
 ip6_output+0x340/0x550
 ndisc_send_skb+0xbce/0x1510
 addrconf_dad_completed+0x7ae/0xd60
 addrconf_dad_work+0xc36/0x14b0
 process_scheduled_works+0xad1/0x1770
 worker_thread+0x8a0/0xda0
page last free pid 5831 tgid 5831 stack trace:
 __free_frozen_pages+0xbc8/0xd30
 __put_partials+0x146/0x170
 __slab_free+0x294/0x320
 qlist_free_all+0x97/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_lru_noprof+0x36c/0x6e0
 alloc_inode+0x6a/0x1b0
 new_inode+0x22/0x170
 __debugfs_create_file+0xb8/0x400
 debugfs_create_file_full+0x3f/0x60
 ref_tracker_dir_debugfs+0x14e/0x2d0
 alloc_netdev_mqs+0x272/0x11b0
 nsim_create+0x7e/0x1050
 __nsim_dev_port_add+0x6a6/0xaf0
 nsim_dev_port_add_all+0x37/0xf0

Memory state around the buggy address:
 ffff88816de5e700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88816de5e780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88816de5e800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff88816de5e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88816de5e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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