kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8423 Comm: syz-executor.3 Not tainted 5.2.0-rc1+ #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:icmpv6_xrlim_allow+0x1b2/0x440 net/ipv6/icmp.c:214 Code: 4d 8b ac 24 b0 00 00 00 4d 85 ed 74 33 e8 16 2f 4b fb 49 8d bd d0 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 70 02 00 00 49 8b 85 d0 02 00 00 65 48 ff 40 78 RSP: 0018:ffff88805916eff0 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 1ffff1100b22de00 RCX: ffffc900062e2000 RDX: 0000000000000079 RSI: ffffffff8625755a RDI: 00000000000003cf RBP: ffff88805916f0b0 R08: ffff88805cd365c0 R09: 0000000000000007 R10: ffffed1015d26bdf R11: ffff8880ae935efb R12: ffff888096cebe1f R13: 00000000000000ff R14: 0000000000000001 R15: ffff8880653ae440 FS: 00007f912709d700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 000000006c1d5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: icmp6_send+0x1107/0x1e50 net/ipv6/icmp.c:540 icmpv6_send+0xec/0x230 net/ipv6/ip6_icmp.c:43 __udp6_lib_rcv+0x1ad1/0x2cc0 net/ipv6/udp.c:938 udpv6_rcv+0x22/0x30 net/ipv6/udp.c:1027 ip6_protocol_deliver_rcu+0x2fe/0x16c0 net/ipv6/ip6_input.c:401 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:442 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:451 dst_input include/net/dst.h:439 [inline] ip6_rcv_finish+0x1de/0x310 net/ipv6/ip6_input.c:80 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:276 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:4990 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5104 netif_receive_skb_internal+0x117/0x5c0 net/core/dev.c:5207 napi_frags_finish net/core/dev.c:5774 [inline] napi_gro_frags+0xada/0xd10 net/core/dev.c:5848 tun_get_user+0x2f3c/0x3ff0 drivers/net/tun.c:1991 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2037 call_write_iter include/linux/fs.h:1872 [inline] do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693 do_iter_write fs/read_write.c:970 [inline] do_iter_write+0x184/0x610 fs/read_write.c:951 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1015 do_writev+0x15b/0x330 fs/read_write.c:1058 __do_sys_writev fs/read_write.c:1131 [inline] __se_sys_writev fs/read_write.c:1128 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1128 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459131 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 b9 fb ff c3 48 83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f912709cba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 000000000000003e RCX: 0000000000459131 RDX: 0000000000000001 RSI: 00007f912709cc00 RDI: 00000000000000f0 RBP: 000000000075bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f912709d6d4 R13: 00000000004c7d21 R14: 00000000004de160 R15: 00000000ffffffff Modules linked in: ---[ end trace b4fc44af70d78279 ]--- RIP: 0010:icmpv6_xrlim_allow+0x1b2/0x440 net/ipv6/icmp.c:214 Code: 4d 8b ac 24 b0 00 00 00 4d 85 ed 74 33 e8 16 2f 4b fb 49 8d bd d0 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 70 02 00 00 49 8b 85 d0 02 00 00 65 48 ff 40 78 RSP: 0018:ffff88805916eff0 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 1ffff1100b22de00 RCX: ffffc900062e2000 RDX: 0000000000000079 RSI: ffffffff8625755a RDI: 00000000000003cf RBP: ffff88805916f0b0 R08: ffff88805cd365c0 R09: 0000000000000007 R10: ffffed1015d26bdf R11: ffff8880ae935efb R12: ffff888096cebe1f R13: 00000000000000ff R14: 0000000000000001 R15: ffff8880653ae440 FS: 00007f912709d700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 000000006c1d5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400