 ... Log Wrap ... Log Wrap ... Log Wrap ...
==================================================================
BUG: KASAN: slab-use-after-free in txEnd+0x32d/0x530
Write of size 8 at addr ffff888111fe9040 by task jfsCommit/118

CPU: 0 UID: 0 PID: 118 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+0x189/0x250
 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+0x599/0xb30
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 6178:
 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+0xfa/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5836:
 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+0xff/0x4f0
 do_syscall_64+0x2e3/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888111fe9000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 64 bytes inside of
 freed 1024-byte region [ffff888111fe9000, ffff888111fe9400)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111fe8
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 ffffea00007b5000 dead000000000002
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 017ff00000000040 ffff888100041dc0 ffffea00007b5000 dead000000000002
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 017ff00000000003 ffffea000447fa01 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 5746, tgid 5746 (dhcpcd), ts 47598098706, free_ts 47520413712
 post_alloc_hook+0x234/0x290
 get_page_from_freelist+0x2365/0x2440
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x86/0x3b0
 ___slab_alloc+0xf2b/0x1960
 __slab_alloc+0x65/0x100
 __kvmalloc_node_noprof+0x6b6/0x920
 bpf_jit_binary_pack_alloc+0x143/0x340
 bpf_int_jit_compile+0x831/0x14b0
 bpf_prog_select_runtime+0x4a3/0x820
 bpf_prepare_filter+0x1124/0x12c0
 bpf_prog_create_from_user+0x2c8/0x440
 do_seccomp+0x7b1/0xd90
 __se_sys_prctl+0xc3c/0x1830
 do_syscall_64+0xfa/0xf80
page last free pid 5576 tgid 5576 stack trace:
 __free_frozen_pages+0xbc8/0xd30
 __put_partials+0x146/0x170
 put_cpu_partial+0x1f2/0x2d0
 __slab_free+0x288/0x2a0
 qlist_free_all+0x97/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_node_track_caller_noprof+0x526/0x820
 kmalloc_reserve+0x136/0x290
 __alloc_skb+0x27e/0x430
 alloc_skb_with_frags+0xca/0x890
 sock_alloc_send_pskb+0x84d/0x980
 unix_dgram_sendmsg+0x454/0x1840
 __sock_sendmsg+0x21c/0x270
 sock_write_iter+0x279/0x360
 vfs_write+0x5c9/0xb30

Memory state around the buggy address:
 ffff888111fe8f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888111fe8f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888111fe9000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888111fe9080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888111fe9100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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