jfs_flush_journal: synclist not empty
=====================================================
BUG: KMSAN: uninit-value in hex_dump_to_buffer+0x888/0x1100 lib/hexdump.c:171
 hex_dump_to_buffer+0x888/0x1100 lib/hexdump.c:171
 print_hex_dump+0x13d/0x3e0 lib/hexdump.c:276
 jfs_flush_journal+0x141b/0x15e0 fs/jfs/jfs_logmgr.c:1598
 jfs_umount+0x1e5/0x720 fs/jfs/jfs_umount.c:58
 jfs_put_super+0xf1/0x390 fs/jfs/super.c:194
 generic_shutdown_super+0x197/0x4c0 fs/super.c:642
 kill_block_super+0x42/0xd0 fs/super.c:1696
 deactivate_locked_super+0xe0/0x3f0 fs/super.c:473
 deactivate_super+0x14f/0x160 fs/super.c:506
 cleanup_mnt+0x6bb/0x730 fs/namespace.c:1373
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1380
 task_work_run+0x268/0x310 kernel/task_work.c:228
 ptrace_notify+0x304/0x320 kernel/signal.c:2403
 ptrace_report_syscall include/linux/ptrace.h:415 [inline]
 ptrace_report_syscall_exit include/linux/ptrace.h:477 [inline]
 syscall_exit_work+0x14e/0x3e0 kernel/entry/common.c:173
 syscall_exit_to_user_mode_prepare kernel/entry/common.c:200 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:205 [inline]
 syscall_exit_to_user_mode+0x13b/0x170 kernel/entry/common.c:218
 do_syscall_64+0xda/0x1e0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4091 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 kmem_cache_alloc_noprof+0x637/0xb20 mm/slub.c:4141
 mempool_alloc_slab+0x36/0x50 mm/mempool.c:559
 mempool_alloc_noprof+0xfa/0x530 mm/mempool.c:402
 alloc_metapage fs/jfs/jfs_metapage.c:182 [inline]
 __get_metapage+0x9c2/0x1630 fs/jfs/jfs_metapage.c:652
 diWrite+0x5ba/0x1f00 fs/jfs/jfs_imap.c:639
 txCommit+0xdb8/0x8cc0 fs/jfs/jfs_txnmgr.c:1255
 jfs_unlink+0xbbd/0x15a0 fs/jfs/namei.c:556
 vfs_unlink+0x676/0xa90 fs/namei.c:4469
 do_unlinkat+0x823/0xe10 fs/namei.c:4533
 __do_sys_unlinkat fs/namei.c:4576 [inline]
 __se_sys_unlinkat fs/namei.c:4569 [inline]
 __x64_sys_unlinkat+0x17a/0x220 fs/namei.c:4569
 x64_sys_call+0x2c7a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:264
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 5185 Comm: syz-executor974 Not tainted 6.12.0-rc1-syzkaller-00330-gfc20a3e57247 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================