TCP: request_sock_TCPv6: Possible SYN flooding on port 20000. Sending cookies. Check SNMP counters. watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.4:4617] Modules linked in: irq event stamp: 5680143 hardirqs last enabled at (5680142): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5680143): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (5598250): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5598253): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4617 Comm: syz-executor.4 Not tainted 5.10.228 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:169 [inline] RIP: 0010:unwind_next_frame+0x227/0x1a90 arch/x86/kernel/unwind_orc.c:448 Code: c1 e8 03 45 0f b6 04 10 48 89 fa 83 e2 07 83 c2 03 44 38 c2 7c 09 45 84 c0 0f 85 67 12 00 00 44 8d 46 01 8b 0c 8d 6c be d6 85 <48> ba 00 00 00 00 00 fc ff df 4a 8d 3c 85 6c be d6 85 49 89 f9 49 RSP: 0018:ffff88806cf09878 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 00000000000a58ad RDX: 0000000000000003 RSI: 000000000002e627 RDI: ffffffff85e25708 RBP: ffff88806cf09985 R08: 000000000002e628 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e1317 R12: ffff88806cf09998 R13: ffff88806cf09950 R14: 1ffff1100d9e1317 R15: ffffffff83e62792 FS: 00007f83470b3700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d422000 CR3: 0000000047910000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 __save_stack_trace mm/kmemleak.c:563 [inline] create_object.isra.0+0x372/0xa20 mm/kmemleak.c:618 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:199 skb_copy+0x183/0x350 net/core/skbuff.c:1529 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb1d/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1499 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:stack_trace_consume_entry+0x92/0x160 kernel/stacktrace.c:88 Code: fc ff df 48 8d 7b 0c 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 98 00 00 00 8b 43 0c <85> c0 75 57 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 RSP: 0018:ffff888047a3ed58 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff888047a3ee30 RCX: ffff888047a3ee08 RDX: 0000000000000000 RSI: ffffffff8130259c RDI: ffff888047a3ee3c RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff11008f47d92 R12: ffff888047a3ee30 R13: 0000000000000000 R14: ffff88800ea71a40 R15: 0000000000000170 arch_stack_walk+0x73/0xf0 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x310 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_percpu+0xa0/0x100 mm/kmemleak.c:924 pcpu_alloc+0x4e2/0x1240 mm/percpu.c:1842 fib6_nh_init+0x855/0x1a00 net/ipv6/route.c:3503 ip6_route_info_create+0x1185/0x1a00 net/ipv6/route.c:3703 addrconf_f6i_alloc+0x28f/0x430 net/ipv6/route.c:4473 ipv6_add_addr+0x36c/0x1cf0 net/ipv6/addrconf.c:1114 add_addr+0xcf/0x2c0 net/ipv6/addrconf.c:3121 sit_add_v4_addrs net/ipv6/addrconf.c:3183 [inline] addrconf_sit_config net/ipv6/addrconf.c:3434 [inline] addrconf_notify+0x1a95/0x2410 net/ipv6/addrconf.c:3627 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xb3/0x110 kernel/notifier.c:410 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2047 call_netdevice_notifiers_extack net/core/dev.c:2059 [inline] call_netdevice_notifiers net/core/dev.c:2073 [inline] __dev_notify_flags+0x110/0x2c0 net/core/dev.c:8549 dev_change_flags+0x100/0x160 net/core/dev.c:8587 devinet_ioctl+0x14d0/0x1da0 net/ipv4/devinet.c:1139 inet_ioctl+0x34f/0x390 net/ipv4/af_inet.c:983 packet_ioctl+0xb3/0x260 net/packet/af_packet.c:4289 sock_do_ioctl+0xd3/0x300 net/socket.c:1066 sock_ioctl+0x3ea/0x700 net/socket.c:1206 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f8349b3db19 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:00007f83470b3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8349c50f60 RCX: 00007f8349b3db19 RDX: 00000000200001c0 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 00007f8349b97f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6a647ebf R14: 00007f83470b3300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4610 Comm: syz-executor.7 Not tainted 5.10.228 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__lock_acquire+0xb12/0x5b00 kernel/locking/lockdep.c:4950 Code: 0f 8d d4 02 00 00 49 63 c4 48 89 de 48 8d 04 80 49 8d 3c c7 e8 9f 40 bf 02 85 c0 74 c8 44 8b bc 24 84 00 00 00 4c 8b 64 24 78 <48> c7 c2 38 87 67 85 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f RSP: 0018:ffff88806ce095b0 EFLAGS: 00000046 RAX: 0000000000000002 RBX: 20f528daaaad1df4 RCX: ffffffff8126f51e RDX: 1ffff11008e37b14 RSI: ffff8880471bd808 RDI: ffff8880471bd8a1 RBP: 0000000000000040 R08: 0000000000000000 R09: ffffffff8686a6e7 R10: fffffbfff0d0d4dc R11: 0000000000000001 R12: ffff8880471bcec0 R13: ffff8880471bd880 R14: 0000000000000003 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561d6631673c CR3: 000000000d21a000 CR4: 0000000000350ef0 Call Trace: lock_acquire kernel/locking/lockdep.c:5566 [inline] lock_acquire+0x197/0x470 kernel/locking/lockdep.c:5531 seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline] ktime_get+0x7f/0x1f0 kernel/time/timekeeping.c:833 clockevents_program_event+0x14b/0x360 kernel/time/clockevents.c:326 tick_program_event+0xa0/0x140 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x3e1/0x9b0 kernel/time/hrtimer.c:1725 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0xfb/0x310 arch/x86/kernel/apic/apic.c:1112 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline] sysvec_apic_timer_interrupt+0x3e/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:19 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:100 [inline] RIP: 0010:queued_spin_lock_slowpath+0x122/0x8c0 kernel/locking/qspinlock.c:326 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 09 07 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 40 8a f8 02 f3 90 73 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e1 00 00 RSP: 0018:ffff88806ce09a38 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffffff87a06080 RCX: ffffffff8127b507 RDX: fffffbfff0f40c11 RSI: 0000000000000004 RDI: ffffffff87a06080 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff87a06083 R10: fffffbfff0f40c10 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0f40c10 R14: 0000000000000001 R15: 1ffff1100d9c1348 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x1dc/0x260 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] mac80211_hwsim_tx_frame_no_nl.isra.0+0x695/0x13d0 drivers/net/wireless/mac80211_hwsim.c:1450 mac80211_hwsim_tx_frame+0x152/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1716 mac80211_hwsim_beacon_tx+0x494/0x940 drivers/net/wireless/mac80211_hwsim.c:1770 __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __do_softirq+0x1b8/0x7c9 kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0x20 kernel/kcov.c:290 Code: 00 00 00 00 00 90 48 8b 0c 24 89 f2 89 fe bf 05 00 00 00 e9 ae fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 0c 24 <48> 89 f2 48 89 fe bf 07 00 00 00 e9 8c fe ff ff 66 66 2e 0f 1f 84 RSP: 0018:ffff888046aef6b8 EFLAGS: 00000246 RAX: 1ffff11008d5dedd RBX: dffffc0000000000 RCX: ffffffff815ff213 RDX: ffff8880471bcec0 RSI: 8000000045649007 RDI: 0000000000000000 RBP: 1ffff11008d5ded9 R08: 0000000000000000 R09: ffff8880471bcec7 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800fbf1300 R13: 00007fead0c1e000 R14: 8000000045649007 R15: 00007fead0c1f000 __pte_needs_invert arch/x86/include/asm/pgtable-invert.h:18 [inline] protnone_mask arch/x86/include/asm/pgtable-invert.h:24 [inline] pte_pfn arch/x86/include/asm/pgtable.h:215 [inline] vm_normal_page+0x93/0x2e0 mm/memory.c:597 zap_pte_range mm/memory.c:1260 [inline] zap_pmd_range mm/memory.c:1404 [inline] zap_pud_range mm/memory.c:1433 [inline] zap_p4d_range mm/memory.c:1454 [inline] unmap_page_range+0xdb5/0x1fe0 mm/memory.c:1475 unmap_single_vma+0x198/0x300 mm/memory.c:1520 unmap_vmas+0x16d/0x300 mm/memory.c:1552 exit_mmap+0x27f/0x4f0 mm/mmap.c:3235 __mmput kernel/fork.c:1101 [inline] mmput+0xca/0x340 kernel/fork.c:1122 exit_mm kernel/exit.c:536 [inline] do_exit+0xa96/0x2600 kernel/exit.c:847 do_group_exit+0x125/0x310 kernel/exit.c:982 get_signal+0x4bc/0x2350 kernel/signal.c:2762 arch_do_signal_or_restart+0x2b7/0x1990 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0x10f/0x190 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x38/0x1d0 kernel/entry/common.c:274 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7fead2a8db19 Code: Unable to access opcode bytes at RIP 0x7fead2a8daef. RSP: 002b:00007fead0003218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 00007fead2ba0f68 RCX: 00007fead2a8db19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fead2ba0f68 RBP: 00007fead2ba0f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fead2ba0f6c R13: 00007fff17ea1f2f R14: 00007fead0003300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: c1 e8 03 shr $0x3,%eax 3: 45 0f b6 04 10 movzbl (%r8,%rdx,1),%r8d 8: 48 89 fa mov %rdi,%rdx b: 83 e2 07 and $0x7,%edx e: 83 c2 03 add $0x3,%edx 11: 44 38 c2 cmp %r8b,%dl 14: 7c 09 jl 0x1f 16: 45 84 c0 test %r8b,%r8b 19: 0f 85 67 12 00 00 jne 0x1286 1f: 44 8d 46 01 lea 0x1(%rsi),%r8d 23: 8b 0c 8d 6c be d6 85 mov -0x7a294194(,%rcx,4),%ecx * 2a: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx <-- trapping instruction 31: fc ff df 34: 4a 8d 3c 85 6c be d6 lea -0x7a294194(,%r8,4),%rdi 3b: 85 3c: 49 89 f9 mov %rdi,%r9 3f: 49 rex.WB