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BUG: KASAN: slab-use-after-free in __mutex_lock+0x7d6/0x1550
Read of size 8 at addr ffff888115bae908 by task jfsCommit/126

CPU: 0 UID: 0 PID: 126 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_address_description+0x55/0x1e0
 print_report+0x58/0x70
 kasan_report+0x117/0x150
 __mutex_lock+0x7d6/0x1550
 jfs_syncpt+0x25/0x90
 txEnd+0x2e5/0x530
 jfs_lazycommit+0x5d6/0xac0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 8747:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x321/0x600
 lmLogOpen+0x2d1/0xf90
 jfs_mount_rw+0xf3/0x670
 jfs_fill_super+0x769/0xda0
 get_tree_bdev_flags+0x430/0x4f0
 vfs_get_tree+0x92/0x2a0
 do_new_mount+0x319/0xdc0
 __se_sys_mount+0x31d/0x420
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5858:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x650
 lmLogClose+0x296/0x530
 jfs_umount+0x2da/0x3b0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0xa0
 deactivate_locked_super+0xbc/0x110
 cleanup_mnt+0x3d3/0x460
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0x204/0x770
 do_syscall_64+0x328/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888115bae800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 264 bytes inside of
 freed 1024-byte region [ffff888115bae800, ffff888115baec00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x115ba8
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x17ff00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 017ff00000000040 ffff888100041dc0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 017ff00000000040 ffff888100041dc0 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 017ff00000000003 fffffffffffffe01 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 5554, tgid 5554 (syz-executor), ts 44236322258
 post_alloc_hook+0x1f9/0x250
 get_page_from_freelist+0x2007/0x2080
 __alloc_frozen_pages_noprof+0x217/0x5a0
 allocate_slab+0x7d/0x620
 refill_objects+0x2d5/0x350
 __pcs_replace_empty_main+0x2c8/0x6c0
 __kmalloc_noprof+0x47b/0x720
 mempool_init_node+0x1f4/0x510
 mempool_create_node_noprof+0xb8/0x150
 sio_pool_init+0x44/0xa0
 setup_swap_extents+0x62/0x480
 __se_sys_swapon+0x125c/0x2020
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 9 tgid 9 ts 42930222516 stack trace:
 __free_frozen_pages+0xcfd/0xe10
 __slab_free+0x274/0x2c0
 qlist_free_all+0x99/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_cache_noprof+0x29f/0x600
 drm_atomic_commit_alloc+0xa9/0x100
 drm_atomic_helper_dirtyfb+0x129/0xfd0
 drm_fbdev_shmem_helper_fb_dirty+0x160/0x310
 drm_fb_helper_damage_work+0x84c/0xf20
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30

Memory state around the buggy address:
 ffff888115bae800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888115bae880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888115bae900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888115bae980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888115baea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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