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:1598
 lmLogShutdown+0xcd/0xc30 fs/jfs/jfs_logmgr.c:1643
 lmLogClose+0x422/0xc60 fs/jfs/jfs_logmgr.c:1460
 jfs_umount+0x4cf/0x720 fs/jfs/jfs_umount.c:114
 jfs_put_super+0x112/0x3d0 fs/jfs/super.c:194
 generic_shutdown_super+0x1ad/0x4b0 fs/super.c:643
 kill_block_super+0x42/0xd0 fs/super.c:1766
 deactivate_locked_super+0xc8/0x3c0 fs/super.c:474
 deactivate_super+0x12f/0x140 fs/super.c:507
 cleanup_mnt+0x6fb/0x780 fs/namespace.c:1375
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1382
 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+0x2a6/0x330 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+0x1e3/0x210 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:1598
 lmLogShutdown+0xcd/0xc30 fs/jfs/jfs_logmgr.c:1643
 lmLogClose+0x422/0xc60 fs/jfs/jfs_logmgr.c:1460
 jfs_umount+0x4cf/0x720 fs/jfs/jfs_umount.c:114
 jfs_put_super+0x112/0x3d0 fs/jfs/super.c:194
 generic_shutdown_super+0x1ad/0x4b0 fs/super.c:643
 kill_block_super+0x42/0xd0 fs/super.c:1766
 deactivate_locked_super+0xc8/0x3c0 fs/super.c:474
 deactivate_super+0x12f/0x140 fs/super.c:507
 cleanup_mnt+0x6fb/0x780 fs/namespace.c:1375
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1382
 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+0x2a6/0x330 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+0x1e3/0x210 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:4197 [inline]
 slab_alloc_node mm/slub.c:4240 [inline]
 kmem_cache_alloc_noprof+0x81b/0xec0 mm/slub.c:4247
 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+0x13c8/0x1c00 fs/btrfs/extent-tree.c:5219
 btrfs_force_cow_block+0x67c/0x2de0 fs/btrfs/ctree.c:517
 btrfs_cow_block+0xa22/0xc10 fs/btrfs/ctree.c:699
 btrfs_search_slot+0x1919/0x4e30 fs/btrfs/ctree.c:2097
 btrfs_search_prev_slot fs/btrfs/free-space-tree.c:136 [inline]
 add_free_space_extent+0x519/0x19a0 fs/btrfs/free-space-tree.c:918
 __btrfs_add_to_free_space_tree+0x2d5/0x370 fs/btrfs/free-space-tree.c:1019
 btrfs_add_to_free_space_tree+0x1d7/0x740 fs/btrfs/free-space-tree.c:1048
 do_free_extent_accounting fs/btrfs/extent-tree.c:3003 [inline]
 __btrfs_free_extent+0x507a/0x6d20 fs/btrfs/extent-tree.c:3372
 run_one_delayed_ref fs/btrfs/extent-tree.c:-1 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1972 [inline]
 __btrfs_run_delayed_refs+0x1eaf/0x7610 fs/btrfs/extent-tree.c:2047
 btrfs_run_delayed_refs+0x136/0x560 fs/btrfs/extent-tree.c:2159
 commit_cowonly_roots+0xef9/0x12b0 fs/btrfs/transaction.c:1378
 btrfs_commit_transaction+0x2279/0x7380 fs/btrfs/transaction.c:2462
 btrfs_commit_current_transaction+0x170/0x240 fs/btrfs/transaction.c:2013
 flush_space+0x52e/0x1750 fs/btrfs/space-info.c:888
 do_async_reclaim_metadata_space+0x20c/0x8d0 fs/btrfs/space-info.c:1158
 btrfs_async_reclaim_metadata_space+0xf6/0x190 fs/btrfs/space-info.c:1226
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xb91/0x1d80 kernel/workqueue.c:3319
 worker_thread+0xedf/0x1590 kernel/workqueue.c:3400
 kthread+0xd5c/0xf00 kernel/kthread.c:463
 ret_from_fork+0x233/0x380 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

CPU: 1 UID: 0 PID: 5815 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(none) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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