Oops: general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
CPU: 0 UID: 0 PID: 10491 Comm: syz.0.10545 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:skb_segment+0x2b3f/0x4030 net/core/skbuff.c:4880
Code: 44 8b bc 24 a0 00 00 00 81 7c 24 1c ff ff 00 00 0f 85 dd e0 ff ff e8 b0 1b 45 f8 48 8b 04 24 48 8d 58 70 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 1a 09 00 00 44 8b 33 48 8b 9c 24 b0 00
RSP: 0018:ffffc900000063e8 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000070 RCX: ffff888027330000
RDX: 0000000000000100 RSI: ffff8880991197ee RDI: 000000000000ffff
RBP: 000000000000004a R08: ffff888027330000 R09: 0000000000000002
R10: 000000000000a888 R11: 0000000000000100 R12: dffffc0000000000
R13: 00000000fffffff8 R14: ffff88809475c1b0 R15: 0000000000000003
FS: 00007f374f6116c0(0000) GS:ffff888125015000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 00000000757a0000 CR4: 00000000003526f0
DR0: 00000000000071d8 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
tcp_gso_segment+0x424/0x1a40 net/ipv4/tcp_offload.c:181
ipv6_gso_segment+0xb80/0x2200 net/ipv6/ip6_offload.c:138
skb_mac_gso_segment+0x31c/0x690 net/core/gso.c:53
__skb_gso_segment+0x376/0x540 net/core/gso.c:124
skb_gso_segment include/net/gso.h:83 [inline]
validate_xmit_skb+0xa21/0x14a0 net/core/dev.c:4018
__dev_queue_xmit+0x1250/0x38a0 net/core/dev.c:4824
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
NF_HOOK include/linux/netfilter.h:318 [inline]
ip6_xmit+0x10f9/0x1ac0 net/ipv6/ip6_output.c:372
inet6_csk_xmit+0x4a5/0x750 net/ipv6/inet6_connection_sock.c:114
__tcp_transmit_skb+0x249b/0x43e0 net/ipv4/tcp_output.c:1693
tcp_transmit_skb net/ipv4/tcp_output.c:1711 [inline]
tcp_write_xmit+0x16e8/0x6980 net/ipv4/tcp_output.c:3064
__tcp_push_pending_frames+0x97/0x380 net/ipv4/tcp_output.c:3247
tcp_push_pending_frames include/net/tcp.h:2276 [inline]
tcp_data_snd_check net/ipv4/tcp_input.c:6130 [inline]
tcp_rcv_established+0xfd8/0x2740 net/ipv4/tcp_input.c:6712
tcp_v6_do_rcv+0x8eb/0x1ba0 net/ipv6/tcp_ipv6.c:1609
tcp_v6_rcv+0x2811/0x3110 net/ipv6/tcp_ipv6.c:1879
ip6_protocol_deliver_rcu+0xa73/0x1600 net/ipv6/ip6_input.c:438
ip6_input_finish+0x191/0x370 net/ipv6/ip6_input.c:489
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
ip6_input+0x16a/0x270 net/ipv6/ip6_input.c:500
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
__netif_receive_skb_one_core net/core/dev.c:6152 [inline]
__netif_receive_skb net/core/dev.c:6265 [inline]
process_backlog+0x7dd/0x1950 net/core/dev.c:6617
__napi_poll+0xae/0x340 net/core/dev.c:7681
napi_poll net/core/dev.c:7744 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7896
handle_softirqs+0x22a/0x870 kernel/softirq.c:626
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
sk_wait_data+0x20e/0x4d0 net/core/sock.c:3264
tcp_recvmsg_locked+0xd71/0x3600 net/ipv4/tcp.c:2828
tcp_recvmsg+0x213/0x7f0 net/ipv4/tcp.c:2979
inet6_recvmsg+0x13e/0x6c0 net/ipv6/af_inet6.c:678
sock_recvmsg_nosec+0x95/0x1c0 net/socket.c:1093
sock_recvmsg net/socket.c:1115 [inline]
__sys_recvfrom+0x28f/0x400 net/socket.c:2271
__do_sys_recvfrom net/socket.c:2286 [inline]
__se_sys_recvfrom net/socket.c:2282 [inline]
__x64_sys_recvfrom+0xde/0x100 net/socket.c:2282
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f374e79aeb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f374f611028 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
RAX: ffffffffffffffda RBX: 00007f374ea16180 RCX: 00007f374e79aeb9
RDX: fffffffffffffd0b RSI: 0000200000000080 RDI: 0000000000000003
RBP: 00007f374e808c1f R08: 0000000000000000 R09: fffffffffffffd25
R10: 00000000c9100120 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f374ea16218 R14: 00007f374ea16180 R15: 00007ffe737c08d8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_segment+0x2b3f/0x4030 net/core/skbuff.c:4880
Code: 44 8b bc 24 a0 00 00 00 81 7c 24 1c ff ff 00 00 0f 85 dd e0 ff ff e8 b0 1b 45 f8 48 8b 04 24 48 8d 58 70 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 1a 09 00 00 44 8b 33 48 8b 9c 24 b0 00
RSP: 0018:ffffc900000063e8 EFLAGS: 00010202
RAX: 000000000000000e RBX: 0000000000000070 RCX: ffff888027330000
RDX: 0000000000000100 RSI: ffff8880991197ee RDI: 000000000000ffff
RBP: 000000000000004a R08: ffff888027330000 R09: 0000000000000002
R10: 000000000000a888 R11: 0000000000000100 R12: dffffc0000000000
R13: 00000000fffffff8 R14: ffff88809475c1b0 R15: 0000000000000003
FS: 00007f374f6116c0(0000) GS:ffff888125015000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 00000000757a0000 CR4: 00000000003526f0
DR0: 00000000000071d8 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 44 8b bc 24 a0 00 00 mov 0xa0(%rsp),%r15d
7: 00
8: 81 7c 24 1c ff ff 00 cmpl $0xffff,0x1c(%rsp)
f: 00
10: 0f 85 dd e0 ff ff jne 0xffffe0f3
16: e8 b0 1b 45 f8 call 0xf8451bcb
1b: 48 8b 04 24 mov (%rsp),%rax
1f: 48 8d 58 70 lea 0x70(%rax),%rbx
23: 48 89 d8 mov %rbx,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 1a 09 00 00 jne 0x951
37: 44 8b 33 mov (%rbx),%r14d
3a: 48 rex.W
3b: 8b .byte 0x8b
3c: 9c pushf
3d: 24 b0 and $0xb0,%al