------------[ cut here ]------------ WARNING: CPU: 1 PID: 3802 at net/ipv4/af_inet.c:167 inet_sock_destruct+0x598/0x760 net/ipv4/af_inet.c:167 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 3802 Comm: syz-executor217 Not tainted 4.9.124-g6a1b592 #30 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801db307cc0 ffffffff81eb95e9 ffffffff83c48ac0 00000000ffffffff 0000000000000000 0000000000000001 00000000000000a7 ffff8801db307d80 ffffffff81423eb5 0000000041b58ab3 ffffffff843bb8e8 ffffffff81423cf6 Call Trace: [ 28.131057] [] __dump_stack lib/dump_stack.c:15 [inline] [ 28.131057] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bf/0x3bc kernel/panic.c:179 [] __warn.cold.9+0xc1/0x17f kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] inet_sock_destruct+0x598/0x760 net/ipv4/af_inet.c:167 [] l2tp_tunnel_destruct+0x339/0x590 net/l2tp/l2tp_core.c:1329 [] __sk_destruct+0x55/0x590 net/core/sock.c:1428 [] __rcu_reclaim kernel/rcu/rcu.h:118 [inline] [] rcu_do_batch kernel/rcu/tree.c:2789 [inline] [] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline] [] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline] [] rcu_process_callbacks+0x8ae/0x12b0 kernel/rcu/tree.c:3037 [] __do_softirq+0x210/0x940 kernel/softirq.c:288 [] invoke_softirq kernel/softirq.c:368 [inline] [] irq_exit+0x114/0x150 kernel/softirq.c:409 [] exiting_irq arch/x86/include/asm/apic.h:669 [inline] [] smp_apic_timer_interrupt+0x81/0xa0 arch/x86/kernel/apic/apic.c:962 [] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:648 [ 28.253152] [] ? clear_page_c_e+0x7/0x10 arch/x86/lib/clear_page_64.S:53 [] __alloc_pages_nodemask+0x237/0x700 mm/page_alloc.c:3843 [] __alloc_pages include/linux/gfp.h:433 [inline] [] __alloc_pages_node include/linux/gfp.h:446 [inline] [] alloc_pages_node include/linux/gfp.h:460 [inline] [] pte_alloc_one+0x22/0x100 arch/x86/mm/pgtable.c:29 [] __pte_alloc+0x2a/0x230 mm/memory.c:579 [] copy_pte_range mm/memory.c:938 [inline] [] copy_pmd_range mm/memory.c:1013 [inline] [] copy_pud_range mm/memory.c:1035 [inline] [] copy_page_range+0x11bf/0x1a60 mm/memory.c:1097 [] dup_mmap kernel/fork.c:674 [inline] [] dup_mm kernel/fork.c:1156 [inline] [] copy_mm kernel/fork.c:1210 [inline] [] copy_process.part.51+0x3d6b/0x6330 kernel/fork.c:1678 [] copy_process kernel/fork.c:1503 [inline] [] _do_fork+0x1b0/0xdd0 kernel/fork.c:1963 [] SYSC_clone kernel/fork.c:2075 [inline] [] SyS_clone+0x37/0x50 kernel/fork.c:2069 [] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..