 ... Log Wrap ... Log Wrap ... Log Wrap ...
==================================================================
BUG: KASAN: slab-use-after-free in lmLogSync+0x9a5/0xa40
Write of size 4 at addr ffff888112ada218 by task jfsCommit/125

CPU: 0 UID: 0 PID: 125 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_address_description+0x55/0x1e0
 print_report+0x58/0x70
 kasan_report+0x117/0x150
 lmLogSync+0x9a5/0xa40
 jfs_syncpt+0x7b/0x90
 txEnd+0x2e5/0x530
 jfs_lazycommit+0x5d6/0xac0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 6138:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x32d/0x660
 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+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5615:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x640
 lmLogClose+0x296/0x530
 jfs_umount+0x2da/0x3b0
 jfs_put_super+0x8c/0x190
 generic_shutdown_super+0x13d/0x2d0
 kill_block_super+0x44/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x3d3/0x460
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0x1fa/0x730
 do_syscall_64+0x353/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888112ada000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 536 bytes inside of
 freed 1024-byte region [ffff888112ada000, ffff888112ada400)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x112ad8
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 0000000800100010 00000000f5000000 0000000000000000
head: 017ff00000000040 ffff888100041dc0 dead000000000100 dead000000000122
head: 0000000000000000 0000000800100010 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 5585, tgid 5585 (sshd), ts 59236686454, free_ts 59232283939
 post_alloc_hook+0x1f9/0x250
 get_page_from_freelist+0x21fa/0x2270
 __alloc_frozen_pages_noprof+0x18d/0x380
 allocate_slab+0x79/0x5e0
 refill_objects+0x2d5/0x350
 __pcs_replace_empty_main+0x2bf/0x6b0
 __kmalloc_noprof+0x485/0x720
 load_elf_phdrs+0x13e/0x240
 load_elf_binary+0xa28/0x2950
 bprm_execve+0x9c7/0x1630
 do_execveat_common+0x4f4/0x670
 __x64_sys_execve+0x97/0xc0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5582 tgid 5582 stack trace:
 __free_frozen_pages+0xc1e/0xd10
 __folio_put+0x4b3/0x590
 do_exit+0x18bc/0x2360
 do_group_exit+0x22d/0x2f0
 __x64_sys_exit_group+0x3f/0x40
 x64_sys_call+0x221a/0x2240
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888112ada100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888112ada180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888112ada200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff888112ada280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888112ada300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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