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
 jfs_umount+0x1e3/0x720 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x112/0x3d0 fs/jfs/super.c:194
 generic_shutdown_super+0x1ad/0x4b0 fs/super.c:642
 kill_block_super+0x42/0xd0 fs/super.c:1710
 deactivate_locked_super+0xcb/0x3c0 fs/super.c:473
 deactivate_super+0x12f/0x140 fs/super.c:506
 cleanup_mnt+0x6fb/0x780 fs/namespace.c:1431
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1438
 task_work_run+0x209/0x2b0 kernel/task_work.c:227
 resume_user_mode_work+0x105/0x160 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x7b/0xb0 kernel/entry/common.c:218
 do_syscall_64+0xe6/0x1b0 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
 jfs_umount+0x1e3/0x720 fs/jfs/jfs_umount.c:58
 jfs_put_super+0x112/0x3d0 fs/jfs/super.c:194
 generic_shutdown_super+0x1ad/0x4b0 fs/super.c:642
 kill_block_super+0x42/0xd0 fs/super.c:1710
 deactivate_locked_super+0xcb/0x3c0 fs/super.c:473
 deactivate_super+0x12f/0x140 fs/super.c:506
 cleanup_mnt+0x6fb/0x780 fs/namespace.c:1431
 __cleanup_mnt+0x22/0x30 fs/namespace.c:1438
 task_work_run+0x209/0x2b0 kernel/task_work.c:227
 resume_user_mode_work+0x105/0x160 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x7b/0xb0 kernel/entry/common.c:218
 do_syscall_64+0xe6/0x1b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_frozen_pages_noprof+0x689/0xf00 mm/page_alloc.c:4989
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2301
 alloc_frozen_pages_noprof+0xf7/0x200 mm/mempolicy.c:2372
 alloc_slab_page mm/slub.c:2450 [inline]
 allocate_slab+0x24d/0x1210 mm/slub.c:2618
 new_slab mm/slub.c:2672 [inline]
 ___slab_alloc+0xfec/0x3480 mm/slub.c:3858
 __slab_alloc mm/slub.c:3948 [inline]
 __slab_alloc_node mm/slub.c:4023 [inline]
 slab_alloc_node mm/slub.c:4184 [inline]
 kmem_cache_alloc_noprof+0x91b/0xec0 mm/slub.c:4203
 batadv_tt_local_add+0x876/0x31d0 net/batman-adv/translation-table.c:659
 batadv_mcast_mla_tt_add net/batman-adv/multicast.c:727 [inline]
 __batadv_mcast_mla_update net/batman-adv/multicast.c:921 [inline]
 batadv_mcast_mla_update+0x3b3a/0x4f80 net/batman-adv/multicast.c:948
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xb9a/0x1d90 kernel/workqueue.c:3319
 worker_thread+0xedf/0x1590 kernel/workqueue.c:3400
 kthread+0xd5c/0xf00 kernel/kthread.c:464
 ret_from_fork+0x71/0x90 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

CPU: 0 UID: 0 PID: 5795 Comm: syz-executor Not tainted 6.15.0-rc7-syzkaller-00014-gd608703fcdd9 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
=====================================================