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BUG: KASAN: slab-use-after-free in txEnd+0x32d/0x530
Write of size 8 at addr ffff888023ae6840 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_range+0x264/0x2c0
 txEnd+0x32d/0x530
 jfs_lazycommit+0x5b8/0xaa0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 6382:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x31c/0x660
 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+0x341/0xd30
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5814:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c1/0x630
 lmLogClose+0x297/0x520
 jfs_umount+0x2ef/0x3c0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 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+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888023ae6800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 64 bytes inside of
 freed 1024-byte region [ffff888023ae6800, ffff888023ae6c00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888023ae7000 pfn:0x23ae0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff888100041dc0 ffffea000445dc10 ffffea00042d7a10
raw: ffff888023ae7000 000000000010000e 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff888100041dc0 ffffea000445dc10 ffffea00042d7a10
head: ffff888023ae7000 000000000010000e 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea00008eb801 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 4516, tgid 4516 (kworker/u9:4), ts 81124558320, free_ts 70073964904
 post_alloc_hook+0x231/0x280
 get_page_from_freelist+0x24dc/0x2580
 __alloc_frozen_pages_noprof+0x18d/0x380
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x87/0x660
 ___slab_alloc+0x150/0x6a0
 __kmalloc_noprof+0x18a/0x760
 ieee802_11_parse_elems_full+0x159/0x2ab0
 ieee80211_ibss_rx_queued_mgmt+0x4ca/0x2cd0
 ieee80211_iface_work+0x84e/0x1340
 cfg80211_wiphy_work+0x2ab/0x4a0
 process_one_work+0x949/0x1650
 worker_thread+0x9af/0xee0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
page last free pid 5252 tgid 5252 stack trace:
 __free_frozen_pages+0xbb9/0xd10
 __slab_free+0x263/0x2b0
 qlist_free_all+0x97/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x2bc/0x650
 do_getname+0x2e/0x250
 do_readlinkat+0xc8/0x510
 __x64_sys_readlink+0x7f/0x90
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888023ae6700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888023ae6780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888023ae6800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888023ae6880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888023ae6900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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