rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2648 jiffies s: 24729 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7875 Comm: syz.8.864 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:ktime_divns include/linux/ktime.h:-1 [inline] RIP: 0010:hrtimer_forward+0x1d8/0x290 kernel/time/hrtimer.c:1077 Code: 24 eb 07 e8 ba 0c 10 00 31 c0 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a4 0c 10 00 0f 0b eb e6 48 89 e8 31 d2 49 f7 f4 <48> 89 04 24 49 89 c5 4d 0f af ec 48 b8 00 00 00 00 00 fc ff df 41 RSP: 0018:ffffc90000006ef0 EFLAGS: 00000046 RAX: 0000000000000005 RBX: ffff888017744360 RCX: ffff88802b963b80 RDX: 000000000000169b RSI: 0000000000002710 RDI: 000000000000d9eb RBP: 000000000000d9eb R08: dffffc0000000000 R09: fffffbfff1c3ed56 R10: fffffbfff1c3ed56 R11: 1ffffffff1c3ed55 R12: 0000000000002710 R13: 0000000000002710 R14: 1ffff11002ee886f R15: ffff888017744378 FS: 00007fef335f66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004a0e3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: hrtimer_forward_now include/linux/hrtimer.h:509 [inline] perf_swevent_hrtimer+0x443/0x500 kernel/events/core.c:10932 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x515/0xd60 kernel/time/hrtimer.c:1811 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1873 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline] __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x132/0x1b0 kernel/softirq.c:428 Code: 8a e8 d2 75 c9 08 65 66 8b 05 4a 2e b5 7e 66 85 c0 75 54 bf 01 00 00 00 e8 bb 45 09 00 e8 66 c0 38 00 fb 65 8b 05 36 fd b3 7e <85> c0 75 05 e8 85 0e b2 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc90000007520 EFLAGS: 00000282 RAX: 0000000000000101 RBX: 0000000000000200 RCX: 8a5a8c11538ea000 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760 RBP: ffffc900000075b0 R08: dffffc0000000000 R09: fffffbfff215c467 R10: fffffbfff215c467 R11: 1ffffffff215c466 R12: ffffffff88f331b1 R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92000000ea4 local_bh_enable include/linux/bottom_half.h:33 [inline] ip6t_do_table+0x1304/0x14c0 net/ipv6/netfilter/ip6_tables.c:377 ip6t_mangle_out net/ipv6/netfilter/ip6table_mangle.c:49 [inline] ip6table_mangle_hook+0x20c/0x7a0 net/ipv6/netfilter/ip6table_mangle.c:71 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xb9/0x200 net/netfilter/core.c:614 nf_hook include/linux/netfilter.h:257 [inline] NF_HOOK include/linux/netfilter.h:300 [inline] ndisc_send_skb+0x13c8/0x1510 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3979 call_timer_fn+0x1a0/0x670 kernel/time/timer.c:1700 expire_timers kernel/time/timer.c:1751 [inline] __run_timers+0x529/0x7d0 kernel/time/timer.c:2022 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2035 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5123 Code: 0f 84 3b 01 00 00 48 85 db 0f 85 5a 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 e0 6d c9 08 e8 6b b7 2e 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 RSP: 0018:ffffc900053d7798 EFLAGS: 00000282 RAX: 8a5a8c11538ea000 RBX: 0000000000000000 RCX: 8a5a8c11538ea000 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760 RBP: ffffc900053d77f0 R08: dffffc0000000000 R09: ffffed10171c7559 R10: ffffed10171c7559 R11: 1ffff110171c7558 R12: ffff88802b963b80 R13: dffffc0000000000 R14: ffff888055519dc0 R15: ffff8880b8e3b590 context_switch kernel/sched/core.c:5247 [inline] __schedule+0x10f4/0x40b0 kernel/sched/core.c:6561 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873 irqentry_exit+0x63/0x70 kernel/entry/common.c:439 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:mod_objcg_state+0x595/0x890 mm/memcontrol.c:3218 Code: c0 00 00 00 0f 85 6e 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 47 30 40 08 f7 c3 00 02 00 00 74 9c fb 4d 85 ff <75> 9b eb a1 e8 62 5f 2c 02 85 c0 0f 84 b8 fb ff ff 48 c7 c0 68 9f RSP: 0018:ffffc900053d7b00 EFLAGS: 00000286 RAX: 8a5a8c11538ea000 RBX: 0000000000000a06 RCX: 8a5a8c11538ea000 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760 RBP: ffffc900053d7c20 R08: dffffc0000000000 R09: ffffed10171c6afa R10: ffffed10171c6afa R11: 1ffff110171c6af9 R12: dffffc0000000000 R13: ffff8880b8e36950 R14: ffff8880b8e36910 R15: ffff888020eeaa00 memcg_slab_post_alloc_hook mm/slab.h:537 [inline] slab_post_alloc_hook+0x32e/0x480 mm/slab.h:745 slab_alloc_node mm/slub.c:3359 [inline] slab_alloc mm/slub.c:3367 [inline] __kmem_cache_alloc_lru mm/slub.c:3374 [inline] kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3383 kmem_cache_zalloc include/linux/slab.h:689 [inline] __alloc_file+0x25/0x230 fs/file_table.c:138 alloc_empty_file+0x90/0x180 fs/file_table.c:187 alloc_file+0x5c/0x5f0 fs/file_table.c:229 alloc_file_pseudo+0x17a/0x1f0 fs/file_table.c:272 sock_alloc_file+0xb3/0x240 net/socket.c:467 sock_map_fd net/socket.c:491 [inline] __sys_socket+0x12a/0x190 net/socket.c:1679 __do_sys_socket net/socket.c:1684 [inline] __se_sys_socket net/socket.c:1682 [inline] __x64_sys_socket+0x76/0x80 net/socket.c:1682 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fef3538f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fef335f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fef355e5fa0 RCX: 00007fef3538f749 RDX: 0000000000000011 RSI: 0000922000000003 RDI: 000000000000000a RBP: 00007fef35413f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fef355e6038 R14: 00007fef355e5fa0 R15: 00007ffc247331f8