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: 19375 Comm: syz-executor.5 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:NF_HOOK_LIST include/linux/netfilter.h:331 [inline] RIP: 0010:ip6_sublist_rcv+0x5c9/0x930 net/ipv6/ip6_input.c:292 Code: 0f 85 78 01 00 00 e8 a6 eb 28 fb 48 8b 85 00 ff ff ff 48 8d b8 10 0f 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 49 03 00 00 48 8b 85 00 ff ff ff 4c 8b a0 10 0f RSP: 0018:ffff88808b2e73c0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90010ba7000 RDX: 00000000000001e2 RSI: ffffffff864a2ffa RDI: 0000000000000f10 RBP: ffff88808b2e74f0 R08: ffff888066746500 R09: ffffed1015d26b75 R10: ffffed1015d26b74 R11: ffff8880ae935ba3 R12: 0000000000000001 R13: ffff88808b2e74c8 R14: ffff88808b2e7558 R15: ffff88808b2e7680 FS: 00007fd59c45c700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32d25000 CR3: 000000008ee05000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ipv6_list_rcv+0x373/0x4b0 net/ipv6/ip6_input.c:328 __netif_receive_skb_list_ptype net/core/dev.c:5274 [inline] __netif_receive_skb_list_core+0x1a2/0x9d0 net/core/dev.c:5312 __netif_receive_skb_list net/core/dev.c:5374 [inline] netif_receive_skb_list_internal+0x7eb/0xe60 net/core/dev.c:5469 gro_normal_list.part.0+0x1e/0xb0 net/core/dev.c:5892 gro_normal_list net/core/dev.c:5905 [inline] gro_normal_one+0x184/0x1d0 net/core/dev.c:5904 napi_frags_finish net/core/dev.c:6008 [inline] napi_gro_frags+0x915/0xd00 net/core/dev.c:6081 tun_get_user+0x2e98/0x3fa0 drivers/net/tun.c:1976 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2022 call_write_iter include/linux/fs.h:1895 [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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459e01 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 b7 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:00007fd59c45bba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 0000000000459e01 RDX: 0000000000000001 RSI: 00007fd59c45bc00 RDI: 00000000000000f0 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd59c45c6d4 R13: 00000000004c936a R14: 00000000004e0c48 R15: 00000000ffffffff Modules linked in: ---[ end trace 6ff93a1610eb7706 ]--- RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:NF_HOOK_LIST include/linux/netfilter.h:331 [inline] RIP: 0010:ip6_sublist_rcv+0x5c9/0x930 net/ipv6/ip6_input.c:292 Code: 0f 85 78 01 00 00 e8 a6 eb 28 fb 48 8b 85 00 ff ff ff 48 8d b8 10 0f 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 49 03 00 00 48 8b 85 00 ff ff ff 4c 8b a0 10 0f RSP: 0018:ffff88808b2e73c0 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90010ba7000 RDX: 00000000000001e2 RSI: ffffffff864a2ffa RDI: 0000000000000f10 RBP: ffff88808b2e74f0 R08: ffff888066746500 R09: ffffed1015d26b75 R10: ffffed1015d26b74 R11: ffff8880ae935ba3 R12: 0000000000000001 R13: ffff88808b2e74c8 R14: ffff88808b2e7558 R15: ffff88808b2e7680 FS: 00007fd59c45c700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32d25000 CR3: 000000008ee05000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400