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BUG: KASAN: slab-use-after-free in __mutex_lock+0x83d/0x1340
Read of size 8 at addr ffff888011e7d908 by task jfsCommit/117

CPU: 0 UID: 0 PID: 117 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
 __mutex_lock+0x83d/0x1340
 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 7764:
 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 7283:
 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 ffff888011e7d800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 264 bytes inside of
 freed 1024-byte region [ffff888011e7d800, ffff888011e7dc00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e78
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff888100041dc0 ffffea000415f800 dead000000000002
raw: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff888100041dc0 ffffea000415f800 dead000000000002
head: 0000000000000000 0000000080100010 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0000479e01 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 5839, tgid 5839 (syz-executor), ts 72351751968, free_ts 28843088425
 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_node_noprof+0x5bc/0x7f0
 qdisc_alloc+0x92/0x900
 qdisc_create_dflt+0x8e/0x4c0
 dev_activate+0x378/0x1150
 __dev_open+0x67a/0x830
 __dev_change_flags+0x1f7/0x690
 netif_change_flags+0x88/0x1a0
 do_setlink+0xf82/0x4590
 rtnl_newlink+0x15a9/0x1be0
page last free pid 1 tgid 1 stack trace:
 __free_frozen_pages+0xbb9/0xd10
 free_reserved_page+0xce/0x120
 free_reserved_area+0x90/0x190
 free_kernel_image_pages+0xa2/0x100
 kernel_init+0x31/0x1d0
 ret_from_fork+0x51b/0xa40
 ret_from_fork_asm+0x1a/0x30

Memory state around the buggy address:
 ffff888011e7d800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888011e7d880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888011e7d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888011e7d980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888011e7da00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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