=====================================================
BUG: KMSAN: uninit-value in deactivate_slab+0x4a1/0x11c0 mm/slub.c:3104
 deactivate_slab+0x4a1/0x11c0 mm/slub.c:3104
 flush_slab mm/slub.c:3305 [inline]
 flush_cpu_slab+0x22e/0x4f0 mm/slub.c:3351
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xb97/0x1d90 kernel/workqueue.c:3319
 worker_thread+0xedf/0x1590 kernel/workqueue.c:3400
 kthread+0xd59/0xf00 kernel/kthread.c:464
 ret_from_fork+0x6e/0x90 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Local variable tmp created at:
 number+0x8a/0x2200 lib/vsprintf.c:455
 vsnprintf+0xd21/0x1bd0 lib/vsprintf.c:2816

CPU: 1 UID: 0 PID: 24 Comm: kworker/1:0 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: slub_flushwq flush_cpu_slab
=====================================================