jfs_flush_journal: synclist not empty
=====================================================
BUG: KMSAN: uninit-value in hex_dump_to_buffer+0x888/0x10f0 lib/hexdump.c:171
 hex_dump_to_buffer+0x888/0x10f0 lib/hexdump.c:171
 print_hex_dump+0x13d/0x3e0 lib/hexdump.c:276
 jfs_flush_journal+0x1415/0x15e0 fs/jfs/jfs_logmgr.c:1598
 jfs_umount+0x1e5/0x710 fs/jfs/jfs_umount.c:58
 jfs_put_super+0xf1/0x380 fs/jfs/super.c:194
 generic_shutdown_super+0x199/0x4b0 fs/super.c:696
 kill_block_super+0x42/0xd0 fs/super.c:1667
 deactivate_locked_super+0xdc/0x3e0 fs/super.c:484
 deactivate_super+0x14b/0x160 fs/super.c:517
 cleanup_mnt+0x6c4/0x730 fs/namespace.c:1256
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1263
 task_work_run+0x263/0x300 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x2a2/0x320 kernel/entry/common.c:171
 exit_to_user_mode_prepare+0x163/0x220 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x2a/0x140 kernel/entry/common.c:296
 do_syscall_64+0x50/0x110 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

Uninit was created at:
 slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x579/0xa90 mm/slub.c:3502
 mempool_alloc_slab+0x36/0x40 mm/mempool.c:518
 mempool_alloc+0xf4/0x520 mm/mempool.c:398
 alloc_metapage fs/jfs/jfs_metapage.c:176 [inline]
 __get_metapage+0xb37/0x18d0 fs/jfs/jfs_metapage.c:651
 dtSplitRoot+0x299/0x1f80 fs/jfs/jfs_dtree.c:1902
 dtSplitUp fs/jfs/jfs_dtree.c:985 [inline]
 dtInsert+0xf3d/0x9b40 fs/jfs/jfs_dtree.c:863
 jfs_rename+0x1027/0x2ef0 fs/jfs/namei.c:1225
 vfs_rename+0x1a79/0x1fa0 fs/namei.c:4844
 do_renameat2+0x1571/0x1ca0 fs/namei.c:4996
 __do_sys_renameat2 fs/namei.c:5029 [inline]
 __se_sys_renameat2 fs/namei.c:5026 [inline]
 __x64_sys_renameat2+0x14f/0x1f0 fs/namei.c:5026
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

CPU: 0 PID: 5041 Comm: syz-executor.4 Not tainted 6.7.0-rc7-syzkaller-00049-g453f5db0619e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
=====================================================