rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (1 GPs behind) idle=9a3/1/0x4000000000000000 softirq=75885/75886 fqs=46 (t=10501 jiffies g=117017 q=2122) rcu: rcu_preempt kthread starved for 3743 jiffies! g117017 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:26304 pid: 15 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5027 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 19157 Comm: syz.3.5102 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:hrtimer_interrupt+0x770/0x980 kernel/time/hrtimer.c:1828 Code: fc ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 81 fc ff ff 48 89 df e8 9f c2 5a 00 e9 74 fc ff ff e8 85 f8 10 00 48 8b 44 24 08 <42> 0f b6 04 30 84 c0 0f 85 49 01 00 00 48 8b 04 24 80 20 fb e9 c3 RSP: 0018:ffffc90000dcfd78 EFLAGS: 00000006 RAX: 1ffff11017225449 RBX: 0000000000000000 RCX: ffff8880405abb80 RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8880b912a3e8 R08: ffffffff816f5fd1 R09: fffffbfff1bd2c16 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000126e31674b2 R13: ffff8880b912a200 R14: dffffc0000000000 R15: ffff8880b912a5e8 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb6229b7018 CR3: 0000000041ebb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:strlen+0x45/0x60 lib/string.c:566 Code: 48 89 fb 49 89 c4 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 75 12 48 ff c3 49 8d 44 24 01 43 80 7c 26 01 00 75 dd eb 13 89 d9 <80> e1 07 38 c1 7c e5 48 89 df e8 9c 09 9c fd eb db 5b 41 5c 41 5e RSP: 0018:ffffc90000dcff78 EFLAGS: 00000206 RAX: 0000000000000006 RBX: ffffffff8a8c2e68 RCX: 000000008a8c2e68 RDX: ffffffff818dbd15 RSI: ffffffff8c91fc60 RDI: ffffffff8a8c2e60 RBP: ffffc90000dd00b0 R08: dffffc0000000000 R09: fffffbfff1bd2c16 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000007 R13: ffffffff818dbd15 R14: ffffffff8a8c2e60 R15: dffffc0000000000 trace_event_get_offsets_lock include/trace/events/lock.h:39 [inline] perf_trace_lock+0x10c/0x440 include/trace/events/lock.h:39 trace_lock_release include/trace/events/lock.h:58 [inline] lock_release+0x93c/0x9a0 kernel/locking/lockdep.c:5634 rcu_read_unlock include/linux/rcupdate.h:772 [inline] is_bpf_text_address+0x24f/0x260 kernel/bpf/core.c:723 kernel_text_address kernel/extable.c:151 [inline] __kernel_text_address+0x94/0x100 kernel/extable.c:105 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc_node+0x199/0x390 mm/slub.c:4455 kmalloc_array_node include/linux/slab.h:684 [inline] kcalloc_node include/linux/slab.h:689 [inline] memcg_alloc_page_obj_cgroups+0x7e/0x120 mm/memcontrol.c:2836 account_slab_page mm/slab.h:424 [inline] allocate_slab mm/slub.c:1928 [inline] new_slab+0xfb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233 dst_alloc+0x12c/0x190 net/core/dst.c:88 ip6_dst_alloc net/ipv6/route.c:342 [inline] icmp6_dst_alloc+0x76/0x4f0 net/ipv6/route.c:3275 ndisc_send_skb+0x305/0x13c0 net/ipv6/ndisc.c:491 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3959 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:PageAnon include/linux/page-flags.h:504 [inline] RIP: 0010:page_remove_rmap+0x88/0x11e0 mm/rmap.c:1353 Code: 83 e0 01 0f 85 52 0e 00 00 e8 34 11 c3 ff 4c 89 fd 48 83 c5 18 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 ef e8 2e db 0c 00 48 8b 6d 00 89 ee 83 e6 01 31 ff e8 RSP: 0018:ffffc90003a273c8 EFLAGS: 00000246 RAX: 1ffffd4000177393 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffea0000bb9c98 R08: ffffffff81bd492a R09: fffff94000177391 R10: 0000000000000000 R11: dffffc0000000001 R12: 00007fdaa72cd000 R13: ffffea0000bb9c88 R14: ffffea0000bb9c88 R15: ffffea0000bb9c80 zap_pte_range mm/memory.c:1373 [inline] zap_pmd_range mm/memory.c:1494 [inline] zap_pud_range mm/memory.c:1523 [inline] zap_p4d_range mm/memory.c:1544 [inline] unmap_page_range+0xffa/0x2630 mm/memory.c:1565 unmap_vmas+0x1f8/0x390 mm/memory.c:1642 exit_mmap+0x3b6/0x670 mm/mmap.c:3186 __mmput+0x112/0x3b0 kernel/fork.c:1126 exit_mm+0x688/0x7f0 kernel/exit.c:550 do_exit+0x626/0x2480 kernel/exit.c:861 do_group_exit+0x144/0x310 kernel/exit.c:996 get_signal+0xc66/0x14e0 kernel/signal.c:2897 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fdaa852aff9 Code: Unable to access opcode bytes at RIP 0x7fdaa852afcf. RSP: 002b:00007fdaa69a3038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000003 RBX: 00007fdaa86e2f80 RCX: 00007fdaa852aff9 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007fdaa859d296 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdaa86e2f80 R15: 00007ffdfe1989c8 NMI backtrace for cpu 0 CPU: 0 PID: 19153 Comm: syz.0.5098 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349 print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline] rcu_pending kernel/rcu/tree.c:3932 [inline] rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619 update_process_times+0x196/0x200 kernel/time/timer.c:1818 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5627 Code: 2b 00 74 08 4c 89 f7 e8 0c 75 67 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc900000079e0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000000f48 RCX: ffffffff816366b2 RDX: dffffc0000000000 RSI: ffffffff8a8b3da0 RDI: ffffffff8ad904c0 RBP: ffffc90000007b30 R08: dffffc0000000000 R09: fffffbfff20e2436 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000f44 R13: dffffc0000000000 R14: ffffc90000007a40 R15: 0000000000000246 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:363 [inline] mrp_periodic_timer+0x2d/0x210 net/802/mrp.c:625 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6777 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 99 bd 1a f7 e8 f4 2c 4a f7 fb bf 01 00 00 00 a9 b3 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 c9 76 8d f7 48 RSP: 0018:ffffc90003ba7540 EFLAGS: 00000286 RAX: 6c2493b97bd55400 RBX: 1ffff92000774eb0 RCX: ffffffff96868f03 RDX: dffffc0000000000 RSI: ffffffff8a8b2b00 RDI: 0000000000000001 RBP: ffffc90003ba7600 R08: ffffffff8186db50 R09: ffffffff8f677008 R10: ffffffff8f677018 R11: ffffffff8f677010 R12: 1ffff92000774ea8 R13: 1ffff92000774eac R14: ffffc90003ba7560 R15: dffffc0000000000 irqentry_exit+0x53/0x80 kernel/entry/common.c:432 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:qlink_to_cache mm/kasan/quarantine.c:120 [inline] RIP: 0010:qlist_free_all+0x26/0x90 mm/kasan/quarantine.c:173 Code: 00 00 00 00 41 57 41 56 41 55 41 54 53 4c 8b 2f 4d 85 ed 74 6e 49 89 f7 49 89 fe 49 bc 00 00 00 00 00 ea ff ff eb 1b 48 ff c9 <48> 8b 71 18 49 8b 5d 00 4c 89 ef e8 3a 04 00 00 49 89 dd 48 85 db RSP: 0018:ffffc90003ba76c0 EFLAGS: 00000282 RAX: ffffea0001930140 RBX: ffff888064c051c0 RCX: ffffea0001930140 RDX: ffffc90010f91000 RSI: 000000000000543e RDI: 000000000000543f RBP: ffff888073161900 R08: ffffffff81398cb8 R09: fffffbfff1bd2c16 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0000000000 R13: ffff888064c051c0 R14: ffffc90003ba76f0 R15: 0000000000000000 kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] kmem_cache_alloc_node_trace+0x128/0x2e0 mm/slub.c:3270 kmalloc_node include/linux/slab.h:609 [inline] kzalloc_node include/linux/slab.h:732 [inline] __get_vm_area_node+0x11f/0x2f0 mm/vmalloc.c:2416 __vmalloc_node_range+0xe3/0x8c0 mm/vmalloc.c:3019 __vmalloc_node mm/vmalloc.c:3079 [inline] __vmalloc+0x75/0x80 mm/vmalloc.c:3093 bpf_prog_alloc_no_stats+0x33/0x2f0 kernel/bpf/core.c:90 bpf_prog_alloc+0x18/0x1d0 kernel/bpf/core.c:124 bpf_prog_load+0x800/0x1b60 kernel/bpf/syscall.c:2300 __sys_bpf+0x343/0x670 kernel/bpf/syscall.c:4651 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline] __se_sys_bpf kernel/bpf/syscall.c:4753 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f26ec570ff9 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:00007f26ea9e9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f26ec728f80 RCX: 00007f26ec570ff9 RDX: 0000000000000080 RSI: 0000000020000300 RDI: 0000000000000005 RBP: 00007f26ec5e3296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f26ec728f80 R15: 00007fffbcd92c18