INFO: rcu detected stall in packet

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in packet_rcv (2) net				1	115d	115d	0/26	auto-obsoleted due to no activity on 2024/03/25 03:49

rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (10499 ticks this GP) idle=c39/1/0x4000000000000000 softirq=219282/219282 fqs=65 (t=10500 jiffies g=402357 q=1602) rcu: rcu_preempt kthread starved for 10340 jiffies! g402357 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:27856 pid: 14 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:4965 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6246 schedule+0xd2/0x260 kernel/sched/core.c:6319 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1966 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2139 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> 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: 3816 Comm: syz-executor.3 Not tainted 5.15.0-rc5-next-20211018-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3694 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3714 [inline] RIP: 0010:validate_chain kernel/locking/lockdep.c:3769 [inline] RIP: 0010:__lock_acquire+0x1669/0x54a0 kernel/locking/lockdep.c:5027 Code: eb 83 b5 80 46 86 c8 61 49 0f af ef 48 c1 ed 30 48 8d 04 ed 60 79 eb 8f 48 89 c2 48 89 44 24 08 48 b8 00 00 00 00 00 fc ff df <48> c1 ea 03 80 3c 02 00 0f 85 10 3b 00 00 48 8b 1c ed 60 79 eb 8f RSP: 0018:ffffc90000dc01f0 EFLAGS: 00000002 RAX: dffffc0000000000 RBX: 0000000000000043 RCX: ffffffff815c4b4f RDX: ffffffff8febc980 RSI: 0000000000000008 RDI: ffffffff8ff47a08 RBP: 0000000000000a04 R08: 0000000000000000 R09: ffffffff8ff47a0f R10: fffffbfff1fe8f41 R11: 0000000000000000 R12: ffff8880a32ca7b8 R13: ffff8880a32c9d00 R14: 0000000000000001 R15: fe0f396dc9977943 FS: 00007fd55b0b9700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000001fffff00 CR3: 00000001552d7000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> lock_acquire kernel/locking/lockdep.c:5637 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602 seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline] timekeeping_get_delta kernel/time/timekeeping.c:252 [inline] timekeeping_get_ns kernel/time/timekeeping.c:386 [inline] ktime_get+0x147/0x470 kernel/time/timekeeping.c:829 clockevents_program_event+0x141/0x370 kernel/time/clockevents.c:326 tick_program_event+0xac/0x140 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x36e/0x790 kernel/time/hrtimer.c:1824 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:52 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 RSP: 0018:ffffc90000dc0658 EFLAGS: 00000a06 RAX: 1ffffffff1b3a2ed RBX: ffffffff8d9d1768 RCX: ffffffff81443799 RDX: 0000000000000000 RSI: ffffffff8e0b2d30 RDI: ffffffff8d9d1758 RBP: ffffffff8d9d1758 R08: ffffffff8e0b2d30 R09: 0000000000000001 R10: fffff520001b80fc R11: 0000000000088089 R12: ffffffff8d9d177c R13: ffffffff8d9d1758 R14: ffffffff8d9d1758 R15: dffffc0000000000 orc_find arch/x86/kernel/unwind_orc.c:173 [inline] unwind_next_frame+0x32a/0x1ca0 arch/x86/kernel/unwind_orc.c:443 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xff/0x130 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:1700 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1726 slab_free mm/slub.c:3491 [inline] kfree+0xf6/0x560 mm/slub.c:4539 skb_free_head net/core/skbuff.c:653 [inline] skb_release_data+0x65a/0x790 net/core/skbuff.c:675 skb_release_all net/core/skbuff.c:740 [inline] __kfree_skb net/core/skbuff.c:754 [inline] consume_skb net/core/skbuff.c:910 [inline] consume_skb+0xc2/0x160 net/core/skbuff.c:904 packet_rcv+0xea/0x13e0 net/packet/af_packet.c:2214 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5455 __netif_receive_skb+0x24/0x1b0 net/core/dev.c:5569 process_backlog+0x2a5/0x6c0 net/core/dev.c:6445 __napi_poll+0xaf/0x440 net/core/dev.c:7010 napi_poll net/core/dev.c:7077 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7164 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5605 Code: dc a5 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc9000edb7908 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff92001db6f23 RCX: ffffffff815c4b4f RDX: 1ffff110146594ec RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8ff47a17 R10: fffffbfff1fe8f42 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff8bca67c0 R15: 0000000000000000 __fs_reclaim_acquire mm/page_alloc.c:4533 [inline] fs_reclaim_acquire+0x115/0x160 mm/page_alloc.c:4547 might_alloc include/linux/sched/mm.h:248 [inline] slab_pre_alloc_hook mm/slab.h:492 [inline] slab_alloc_node mm/slub.c:3127 [inline] slab_alloc mm/slub.c:3220 [inline] kmem_cache_alloc+0x3e/0x390 mm/slub.c:3225 dup_mm+0x8a/0x13e0 kernel/fork.c:1492 copy_mm kernel/fork.c:1553 [inline] copy_process+0x6fe5/0x75a0 kernel/fork.c:2242 kernel_clone+0xe7/0xab0 kernel/fork.c:2632 __do_sys_clone+0xc8/0x110 kernel/fork.c:2749 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fd55db43a39 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd55b0b9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fd55dc46f60 RCX: 00007fd55db43a39 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000010002000 RBP: 00007fd55db9dc5f R08: 0000000020000440 R09: 0000000000000000 R10: 0000000020000400 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe219b7d7f R14: 00007fd55b0b9300 R15: 0000000000022000 </TASK> NMI backtrace for cpu 0 CPU: 0 PID: 3815 Comm: syz-executor.3 Not tainted 5.15.0-rc5-next-20211018-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343 print_cpu_stall kernel/rcu/tree_stall.h:604 [inline] check_cpu_stall kernel/rcu/tree_stall.h:688 [inline] rcu_pending kernel/rcu/tree.c:3889 [inline] rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2608 update_process_times+0x16d/0x200 kernel/time/timer.c:1785 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:check_region_inline mm/kasan/generic.c:169 [inline] RIP: 0010:kasan_check_range+0x9/0x180 mm/kasan/generic.c:189 Code: 47 08 48 c7 c6 28 97 37 8b 48 8d 50 ff a8 01 48 0f 45 fa e8 b9 6f ec ff 0f 0b 0f 1f 80 00 00 00 00 48 85 f6 0f 84 70 01 00 00 <49> 89 f9 41 54 44 0f b6 c2 49 01 f1 55 53 0f 82 18 01 00 00 48 b8 RSP: 0018:ffffc90000007d30 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff8166783b RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d8ffa10 RBP: ffffc90000007d70 R08: 0000000000000007 R09: ffffffff8ff47b6f R10: ffffffff81667810 R11: 0000000000000000 R12: ffff88809f623b38 R13: 1ffff92000000fa8 R14: ffffffff87675fd0 R15: 0000000000000000 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] cpumask_test_cpu include/linux/cpumask.h:379 [inline] cpu_online include/linux/cpumask.h:921 [inline] trace_timer_expire_entry include/trace/events/timer.h:90 [inline] call_timer_fn+0x17b/0x6b0 kernel/time/timer.c:1420 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:unwind_next_frame+0x42/0x1ca0 arch/x86/kernel/unwind_orc.c:418 Code: 81 ec a0 00 00 00 48 c7 44 24 40 b3 8a b5 41 48 8d 5c 24 40 48 c7 44 24 48 29 98 35 8b 48 c1 eb 03 48 c7 44 24 50 70 d9 33 81 <48> 8d 14 03 c7 02 f1 f1 f1 f1 c7 42 04 00 f3 f3 f3 48 89 fa 65 48 RSP: 0018:ffffc9000ef0f450 EFLAGS: 00000a02 RAX: dffffc0000000000 RBX: 1ffff92001de1e92 RCX: ffffc9000ef0f618 RDX: ffffc9000ef10000 RSI: 1ffff92001de1eb1 RDI: ffffc9000ef0f578 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffc9000ef0f578 R10: fffff52001de1ebc R11: 0000000000000000 R12: fffff52001de1eb1 R13: fffff52001de1eb0 R14: ffffc9000ef0f578 R15: ffffc9000ef0f578 __unwind_start+0x50b/0x7e0 arch/x86/kernel/unwind_orc.c:712 unwind_start arch/x86/include/asm/unwind.h:62 [inline] arch_stack_walk+0x5c/0xe0 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x90/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3212 [inline] slab_alloc mm/slub.c:3220 [inline] kmem_cache_alloc+0x209/0x390 mm/slub.c:3225 kmem_cache_zalloc include/linux/slab.h:714 [inline] alloc_vfsmnt+0x23/0x6b0 fs/namespace.c:197 clone_mnt+0x6d/0x1080 fs/namespace.c:1055 copy_tree+0x3ad/0xae0 fs/namespace.c:1872 copy_mnt_ns+0x1a0/0xae0 fs/namespace.c:3428 create_new_namespaces+0xd6/0xb20 kernel/nsproxy.c:78 copy_namespaces+0x391/0x450 kernel/nsproxy.c:178 copy_process+0x2da7/0x75a0 kernel/fork.c:2245 kernel_clone+0xe7/0xab0 kernel/fork.c:2632 __do_sys_clone+0xc8/0x110 kernel/fork.c:2749 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fd55db43a39 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd55b0b9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fd55dc46f60 RCX: 00007fd55db43a39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000006cb2e100 RBP: 00007fd55db9dc5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe219b7d7f R14: 00007fd55b0b9300 R15: 0000000000022000 </TASK> ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 83 b5 80 46 86 c8 61 xorl $0x61,-0x3779b980(%rbp) 7: 49 0f af ef imul %r15,%rbp b: 48 c1 ed 30 shr $0x30,%rbp f: 48 8d 04 ed 60 79 eb lea -0x701486a0(,%rbp,8),%rax 16: 8f 17: 48 89 c2 mov %rax,%rdx 1a: 48 89 44 24 08 mov %rax,0x8(%rsp) 1f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 26: fc ff df * 29: 48 c1 ea 03 shr $0x3,%rdx <-- trapping instruction 2d: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 31: 0f 85 10 3b 00 00 jne 0x3b47 37: 48 8b 1c ed 60 79 eb mov -0x701486a0(,%rbp,8),%rbx 3e: 8f