jfs_flush_journal: synclist not empty
=====================================================
BUG: KMSAN: uninit-value in hex_dump_to_buffer+0xefb/0xf30 lib/hexdump.c:171
 hex_dump_to_buffer+0xefb/0xf30 lib/hexdump.c:171
 print_hex_dump+0x10d/0x330 lib/hexdump.c:276
 jfs_flush_journal+0x13ed/0x1670 fs/jfs/jfs_logmgr.c:1597
 lmLogShutdown+0xcd/0xc30 fs/jfs/jfs_logmgr.c:1642
 lmLogClose+0x422/0xc60 fs/jfs/jfs_logmgr.c:1459
 jfs_umount+0x4cf/0x720 fs/jfs/jfs_umount.c:114
 jfs_put_super+0x112/0x3d0 fs/jfs/super.c:194
 generic_shutdown_super+0x1b0/0x4b0 fs/super.c:642
 kill_block_super+0x42/0xd0 fs/super.c:1722
 deactivate_locked_super+0xcb/0x3c0 fs/super.c:473
 deactivate_super+0x12f/0x140 fs/super.c:506
 cleanup_mnt+0x6fb/0x780 fs/namespace.c:1327
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1334
 task_work_run+0x209/0x2b0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0x2d1/0x370 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x1e3/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was stored to memory at:
 hex_dump_to_buffer+0xef4/0xf30 lib/hexdump.c:173
 print_hex_dump+0x10d/0x330 lib/hexdump.c:276
 jfs_flush_journal+0x13ed/0x1670 fs/jfs/jfs_logmgr.c:1597
 lmLogShutdown+0xcd/0xc30 fs/jfs/jfs_logmgr.c:1642
 lmLogClose+0x422/0xc60 fs/jfs/jfs_logmgr.c:1459
 jfs_umount+0x4cf/0x720 fs/jfs/jfs_umount.c:114
 jfs_put_super+0x112/0x3d0 fs/jfs/super.c:194
 generic_shutdown_super+0x1b0/0x4b0 fs/super.c:642
 kill_block_super+0x42/0xd0 fs/super.c:1722
 deactivate_locked_super+0xcb/0x3c0 fs/super.c:473
 deactivate_super+0x12f/0x140 fs/super.c:506
 cleanup_mnt+0x6fb/0x780 fs/namespace.c:1327
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1334
 task_work_run+0x209/0x2b0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0x2d1/0x370 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x1e3/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_post_alloc_hook mm/slub.c:4981 [inline]
 slab_alloc_node mm/slub.c:5284 [inline]
 kmem_cache_alloc_noprof+0x8f5/0x1640 mm/slub.c:5291
 add_delayed_ref+0x1bb/0x3f90 fs/btrfs/delayed-ref.c:1008
 btrfs_add_delayed_tree_ref+0xd8/0x1b0 fs/btrfs/delayed-ref.c:1094
 btrfs_alloc_tree_block+0x1757/0x1bc0 fs/btrfs/extent-tree.c:5221
 btrfs_force_cow_block+0x66b/0x2e00 fs/btrfs/ctree.c:517
 btrfs_cow_block+0xa58/0xc10 fs/btrfs/ctree.c:708
 btrfs_search_slot+0x1924/0x4db0 fs/btrfs/ctree.c:2106
 btrfs_insert_empty_items+0xb6/0x230 fs/btrfs/ctree.c:4293
 btrfs_create_new_inode+0x1d68/0x3c60 fs/btrfs/inode.c:6561
 btrfs_create_common+0x27d/0x3d0 fs/btrfs/inode.c:6790
 btrfs_create+0x13c/0x250 fs/btrfs/inode.c:6830
 lookup_open fs/namei.c:3796 [inline]
 open_last_lookups fs/namei.c:3895 [inline]
 path_openat+0x2d47/0x6760 fs/namei.c:4131
 do_filp_open+0x280/0x660 fs/namei.c:4161
 do_sys_openat2+0x1bb/0x2f0 fs/open.c:1437
 do_sys_open fs/open.c:1452 [inline]
 __do_sys_openat fs/open.c:1468 [inline]
 __se_sys_openat fs/open.c:1463 [inline]
 __x64_sys_openat+0x240/0x300 fs/open.c:1463
 x64_sys_call+0x3be0/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 12202 Comm: syz-executor Tainted: G        W           syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
=====================================================