Memory cgroup out of memory: Killed process 14598 (syz.0.3548) total-vm:96096kB, anon-rss:1236kB, file-rss:20804kB, shmem-rss:0kB, UID:0 pgtables:104kB oom_score_adj:1000 ================================================================== BUG: KCSAN: data-race in mem_cgroup_flush_stats_ratelimited / tick_do_update_jiffies64 read-write to 0xffffffff86c07a00 of 8 bytes by interrupt on cpu 1: tick_do_update_jiffies64+0x113/0x1c0 kernel/time/tick-sched.c:118 tick_sched_do_timer kernel/time/tick-sched.c:253 [inline] tick_nohz_handler+0x88/0x380 kernel/time/tick-sched.c:310 __run_hrtimer kernel/time/hrtimer.c:2032 [inline] __hrtimer_run_queues+0x1f8/0x510 kernel/time/hrtimer.c:2096 hrtimer_interrupt+0x257/0x810 kernel/time/hrtimer.c:2215 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline] __sysvec_apic_timer_interrupt+0x5f/0x1c0 arch/x86/kernel/apic/apic.c:1068 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x32/0x80 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 pie_calculate_probability+0x15f/0x4c0 net/sched/sch_pie.c:350 fq_pie_timer+0xf6/0x1d0 net/sched/sch_fq_pie.c:402 call_timer_fn+0x3b/0x240 kernel/time/timer.c:1748 expire_timers kernel/time/timer.c:1799 [inline] __run_timers kernel/time/timer.c:2374 [inline] __run_timer_base+0x40c/0x5f0 kernel/time/timer.c:2386 run_timer_base kernel/time/timer.c:2395 [inline] run_timer_softirq+0x31/0x70 kernel/time/timer.c:2405 handle_softirqs+0xb9/0x280 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x42/0xd0 kernel/softirq.c:735 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x74/0x80 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 console_flush_one_record arch/x86/include/asm/irqflags.h:-1 [inline] console_flush_all+0x513/0x6b0 kernel/printk/printk.c:3343 __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0xa1/0x280 kernel/printk/printk.c:3413 vprintk_emit+0x3e4/0x600 kernel/printk/printk.c:2479 vprintk_default+0x26/0x30 kernel/printk/printk.c:2494 vprintk+0x1d/0x30 kernel/printk/printk_safe.c:82 _printk+0x79/0xa0 kernel/printk/printk.c:2504 usb_gadget_register_driver_owner+0x17e/0x1a0 drivers/usb/gadget/udc/core.c:1762 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:596 [inline] raw_ioctl+0xc5b/0x1df0 drivers/usb/gadget/legacy/raw_gadget.c:1307 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xce/0x140 fs/ioctl.c:583 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:583 x64_sys_call+0x1563/0x3020 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff86c07a00 of 8 bytes by task 17702 on cpu 0: mem_cgroup_flush_stats_ratelimited+0x29/0x50 mm/memcontrol.c:743 count_shadow_nodes+0x6a/0x250 mm/workingset.c:694 do_shrink_slab+0x61/0x650 mm/shrinker.c:389 shrink_slab_memcg mm/shrinker.c:560 [inline] shrink_slab+0x53b/0x8e0 mm/shrinker.c:638 shrink_node_memcgs mm/vmscan.c:6129 [inline] shrink_node+0x6d9/0x20f0 mm/vmscan.c:6171 shrink_zones mm/vmscan.c:6410 [inline] do_try_to_free_pages+0x408/0xc90 mm/vmscan.c:6472 try_to_free_mem_cgroup_pages+0x201/0x420 mm/vmscan.c:6794 try_charge_memcg+0x375/0xa00 mm/memcontrol.c:2655 obj_cgroup_charge_pages mm/memcontrol.c:3097 [inline] __memcg_kmem_charge_page+0x199/0x3a0 mm/memcontrol.c:3141 __alloc_frozen_pages_noprof+0x18a/0x350 mm/page_alloc.c:5321 alloc_pages_mpol+0xa9/0x1d0 mm/mempolicy.c:2490 alloc_frozen_pages_noprof mm/mempolicy.c:2561 [inline] alloc_pages_noprof+0x8f/0x140 mm/mempolicy.c:2581 vm_area_alloc_pages mm/vmalloc.c:3742 [inline] __vmalloc_area_node mm/vmalloc.c:3892 [inline] __vmalloc_node_range_noprof+0xae9/0x11e0 mm/vmalloc.c:4082 __kvmalloc_node_noprof+0x3a0/0x590 mm/slub.c:6961 futex_hash_allocate+0x192/0x920 kernel/futex/core.c:1823 futex_hash_prctl+0xd8/0xf0 kernel/futex/core.c:1995 __do_sys_prctl kernel/sys.c:2885 [inline] __se_sys_prctl+0x4f4/0x13b0 kernel/sys.c:2534 __x64_sys_prctl+0x67/0x80 kernel/sys.c:2534 x64_sys_call+0x2533/0x3020 arch/x86/include/generated/asm/syscalls_64.h:158 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x000000010000ba3d -> 0x000000010000ba3e Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 17702 Comm: syz.0.4628 Tainted: G W syzkaller #0 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 ================================================================== syz.0.4628 invoked oom-killer: gfp_mask=0x402dc2(GFP_KERNEL_ACCOUNT|__GFP_HIGHMEM|__GFP_ZERO|__GFP_NOWARN), order=0, oom_score_adj=0 CPU: 0 UID: 0 PID: 17702 Comm: syz.0.4628 Tainted: G W syzkaller #0 PREEMPT(lazy) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: __dump_stack+0x1d/0x30 lib/dump_stack.c:94 dump_stack_lvl+0x95/0xd0 lib/dump_stack.c:120 dump_stack+0x15/0x1b lib/dump_stack.c:129 dump_header+0x80/0x240 mm/oom_kill.c:464 oom_kill_process+0x295/0x350 mm/oom_kill.c:1031 out_of_memory+0x981/0xbc0 mm/oom_kill.c:1169 mem_cgroup_out_of_memory mm/memcontrol.c:1907 [inline] mem_cgroup_oom mm/memcontrol.c:1930 [inline] try_charge_memcg+0x621/0xa00 mm/memcontrol.c:2697 obj_cgroup_charge_pages mm/memcontrol.c:3097 [inline] __memcg_kmem_charge_page+0x199/0x3a0 mm/memcontrol.c:3141 __alloc_frozen_pages_noprof+0x18a/0x350 mm/page_alloc.c:5321 alloc_pages_mpol+0xa9/0x1d0 mm/mempolicy.c:2490 alloc_frozen_pages_noprof mm/mempolicy.c:2561 [inline] alloc_pages_noprof+0x8f/0x140 mm/mempolicy.c:2581 vm_area_alloc_pages mm/vmalloc.c:3742 [inline] __vmalloc_area_node mm/vmalloc.c:3892 [inline] __vmalloc_node_range_noprof+0xae9/0x11e0 mm/vmalloc.c:4082 __kvmalloc_node_noprof+0x3a0/0x590 mm/slub.c:6961 futex_hash_allocate+0x192/0x920 kernel/futex/core.c:1823 futex_hash_prctl+0xd8/0xf0 kernel/futex/core.c:1995 __do_sys_prctl kernel/sys.c:2885 [inline] __se_sys_prctl+0x4f4/0x13b0 kernel/sys.c:2534 __x64_sys_prctl+0x67/0x80 kernel/sys.c:2534 x64_sys_call+0x2533/0x3020 arch/x86/include/generated/asm/syscalls_64.h:158 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x136/0x3c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1d1be3de99 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1d1a00f028 EFLAGS: 00000246 ORIG_RAX: 000000000000009d RAX: ffffffffffffffda RBX: 00007f1d1c0c6360 RCX: 00007f1d1be3de99 RDX: 0000000001000000 RSI: 0000000000000001 RDI: 000000000000004e RBP: 00007f1d1bed3eaf R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1d1c0c63f8 R14: 00007f1d1c0c6360 R15: 00007ffcf70d53d8 memory: usage 307200kB, limit 307200kB, failcnt 26799 memory+swap: usage 311516kB, limit 9007199254740988kB, failcnt 0 kmem: usage 307160kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache 0 rss 0 shmem 0 mapped_file 0 dirty 0 writeback 0 workingset_refault_anon 3277 workingset_refault_file 8656 swap 4419584 swapcached 233783296 pgpgin 544360 pgpgout 544357 pgfault 653603 pgmajfault 2135 inactive_anon 4096 active_anon 8192 inactive_file 0 active_file 0 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 0 total_rss 0 total_shmem 0 total_mapped_file 0 total_dirty 0 total_writeback 0 total_workingset_refault_anon 3277 total_workingset_refault_file 8656 total_swap 4419584 total_swapcached 233783296 total_pgpgin 544360 total_pgpgout 544357 total_pgfault 653603 total_pgmajfault 2135 total_inactive_anon 4096 total_active_anon 8192 total_inactive_file 0 total_active_file 0 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/syz0,task_memcg=/syz0,task=syz.0.4628,pid=17683,uid=0 Memory cgroup out of memory: Killed process 17683 (syz.0.4628) total-vm:90500kB, anon-rss:1236kB, file-rss:30416kB, shmem-rss:0kB, UID:0 pgtables:156kB oom_score_adj:0