general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 7026 Comm: syz-executor.2 Not tainted 5.7.0-rc7-next-20200526-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_zcopy include/linux/skbuff.h:1446 [inline] RIP: 0010:skb_orphan_frags include/linux/skbuff.h:2777 [inline] RIP: 0010:skb_clone+0x9a/0x3c0 net/core/skbuff.c:1436 Code: c1 ea 03 80 3c 02 00 0f 85 06 03 00 00 4c 03 a5 c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 03 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 64 02 00 00 RSP: 0018:ffffc90000da8860 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888097d3a040 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff86252493 RDI: 0000000000000003 RBP: ffffffff8a6524e0 R08: 0000000000000000 R09: ffff888097d3a040 R10: ffff8880ae738c5b R11: ffffed1015ce718b R12: 0000000000000000 R13: 0000000000000a20 R14: 0000000000000071 R15: ffffffff8a6524e0 FS: 00000000024bc940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000790000 CR3: 0000000067de1000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_icmp_error+0x31/0x5a0 net/ipv4/ip_sockglue.c:397 tcp_v4_err+0x99e/0x1ce0 net/ipv4/tcp_ipv4.c:576 icmp_socket_deliver+0x1e1/0x360 net/ipv4/icmp.c:803 icmp_unreach+0x33b/0xab0 net/ipv4/icmp.c:920 icmp_rcv+0xee6/0x15f0 net/ipv4/icmp.c:1102 ip_protocol_deliver_rcu+0x57/0x880 net/ipv4/ip_input.c:204 ip_local_deliver_finish+0x220/0x360 net/ipv4/ip_input.c:231 NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip_local_deliver+0x1c8/0x4e0 net/ipv4/ip_input.c:252 dst_input include/net/dst.h:441 [inline] ip_rcv_finish+0x1da/0x2f0 net/ipv4/ip_input.c:428 NF_HOOK include/linux/netfilter.h:307 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] ip_rcv+0xd0/0x3c0 net/ipv4/ip_input.c:539 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:5268 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5382 process_backlog+0x21e/0x7a0 net/core/dev.c:6214 napi_poll net/core/dev.c:6659 [inline] net_rx_action+0x4e1/0x10d0 net/core/dev.c:6727 __do_softirq+0x268/0x9ee kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x192/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1107 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:1030 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:do_syscall_64+0x2d/0xe0 arch/x86/entry/common.c:347 Code: f5 53 48 89 fb 48 8b 7c 24 10 e8 ae 55 00 00 e8 79 98 9d f9 e8 74 93 9d f9 48 83 3d 6c e9 b9 01 00 74 7a fb 66 0f 1f 44 00 00 <65> 48 8b 04 25 00 1f 02 00 48 8b 00 a9 c1 01 00 10 75 53 48 81 fb RSP: 0018:ffffc90002467f40 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 00000000000000e4 RCX: 1ffffffff1519a2e RDX: 1ffff110130eedc1 RSI: 0000000000000000 RDI: ffff888098776e08 RBP: ffffc90002467f58 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45f86a Code: 25 18 00 00 00 00 74 01 f0 48 0f b1 3d ff a5 84 00 48 39 c2 75 da f3 c3 0f 1f 84 00 00 00 00 00 48 63 ff b8 e4 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 c7 c2 d4 ff ff ff f7 RSP: 002b:00007fffaf9a7718 EFLAGS: 00000246 ORIG_RAX: 00000000000000e4 RAX: ffffffffffffffda RBX: 0000000000031744 RCX: 000000000045f86a RDX: 0000000000000000 RSI: 00007fffaf9a7720 RDI: 0000000000000001 RBP: 0000000000000108 R08: 0000000000000001 R09: 00000000024bc940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffaf9a7780 R14: 0000000000031744 R15: 00007fffaf9a7790 Modules linked in: ---[ end trace a26d3068c126b0ff ]--- RIP: 0010:skb_zcopy include/linux/skbuff.h:1446 [inline] RIP: 0010:skb_orphan_frags include/linux/skbuff.h:2777 [inline] RIP: 0010:skb_clone+0x9a/0x3c0 net/core/skbuff.c:1436 Code: c1 ea 03 80 3c 02 00 0f 85 06 03 00 00 4c 03 a5 c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 03 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 64 02 00 00 RSP: 0018:ffffc90000da8860 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888097d3a040 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff86252493 RDI: 0000000000000003 RBP: ffffffff8a6524e0 R08: 0000000000000000 R09: ffff888097d3a040 R10: ffff8880ae738c5b R11: ffffed1015ce718b R12: 0000000000000000 R13: 0000000000000a20 R14: 0000000000000071 R15: ffffffff8a6524e0 FS: 00000000024bc940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000790000 CR3: 0000000067de1000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400