syzbot

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BUG: KMSAN: uninit-value in __flush_smp_call_function_queue+0x362/0x18e0 kernel/smp.c:535
 __flush_smp_call_function_queue+0x362/0x18e0 kernel/smp.c:535
 generic_smp_call_function_single_interrupt+0x1c/0x30 kernel/smp.c:463
 __sysvec_call_function_single+0x4b/0x3e0 arch/x86/kernel/smp.c:271
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:266 [inline]
 sysvec_call_function_single+0x7c/0x90 arch/x86/kernel/smp.c:266
 asm_sysvec_call_function_single+0x1f/0x30 arch/x86/include/asm/idtentry.h:704
 smap_save mm/kmsan/instrumentation.c:94 [inline]
 get_shadow_origin_ptr mm/kmsan/instrumentation.c:35 [inline]
 __msan_metadata_ptr_for_load_8+0x14/0x40 mm/kmsan/instrumentation.c:94
 find_next_bit include/linux/find.h:69 [inline]
 __for_each_wrap include/linux/find.h:477 [inline]
 steal_cookie_task kernel/sched/core.c:6305 [inline]
 sched_core_balance+0x17f2/0x2010 kernel/sched/core.c:6333
 do_balance_callbacks kernel/sched/core.c:4929 [inline]
 __balance_callbacks kernel/sched/core.c:4985 [inline]
 finish_lock_switch kernel/sched/core.c:5034 [inline]
 finish_task_switch+0x3e4/0x8b0 kernel/sched/core.c:5153
 context_switch kernel/sched/core.c:5301 [inline]
 __schedule+0x2607/0x8640 kernel/sched/core.c:6911
 schedule_idle+0x5a/0x90 kernel/sched/core.c:7034
 do_idle+0x859/0x870 kernel/sched/idle.c:369
 cpu_startup_entry+0x5f/0x80 kernel/sched/idle.c:439
 rest_init+0x1df/0x260 init/main.c:760
 start_kernel+0x6d1/0x8b0 init/main.c:1210
 x86_64_start_reservations+0x28/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x139/0x140 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x147

Local variable pflags created at:
 try_charge_memcg+0x63/0x1c20 mm/memcontrol.c:2367
 try_charge mm/memcontrol.c:2556 [inline]
 charge_memcg mm/memcontrol.c:4744 [inline]
 __mem_cgroup_charge+0x114/0x5c0 mm/memcontrol.c:4761

CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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