kernel BUG at net/core/skbuff.c:120! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 3 PID: 5461 Comm: syz-executor.2 Not tainted 6.1.0-rc5-syzkaller-00044-gcc675d22e422 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:120 Code: f7 4c 8b 4c 24 10 8b 4b 70 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 80 10 5b 8b ff 74 24 10 ff 74 24 20 e8 ce 05 c0 ff <0f> 0b e8 8e 66 94 f7 4c 8b 64 24 18 e8 74 1c e1 f7 48 c7 c1 e0 1d RSP: 0018:ffffc900060e6e50 EFLAGS: 00010286 RAX: 0000000000000089 RBX: ffff888066bafe00 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff816574fc RDI: fffff52000c1cdbc RBP: ffffffff8b5b1e20 R08: 0000000000000089 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: ffffffff889ab16a R13: 0000000000000048 R14: ffffffff8b5b1040 R15: 0000000000000ec0 FS: 0000000000000000(0000) GS:ffff88802c900000(0063) knlGS:00000000f7f7bb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002000f01c CR3: 0000000050e5e000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic net/core/skbuff.c:125 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:2152 dump_esp_combs net/key/af_key.c:3009 [inline] pfkey_send_acquire+0x185a/0x2520 net/key/af_key.c:3230 km_query+0xb0/0x220 net/xfrm/xfrm_state.c:2248 xfrm_state_find+0x2c02/0x4f10 net/xfrm/xfrm_state.c:1165 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:2392 [inline] xfrm_tmpl_resolve+0x2f3/0xd40 net/xfrm/xfrm_policy.c:2437 xfrm_resolve_and_create_bundle+0x123/0x2580 net/xfrm/xfrm_policy.c:2730 xfrm_lookup_with_ifid+0x22d/0x20f0 net/xfrm/xfrm_policy.c:3064 xfrm_lookup net/xfrm/xfrm_policy.c:3193 [inline] xfrm_lookup_route+0x3a/0x1e0 net/xfrm/xfrm_policy.c:3204 ip_route_output_flow+0x118/0x150 net/ipv4/route.c:2880 udp_sendmsg+0x1967/0x2750 net/ipv4/udp.c:1224 inet_sendmsg+0x9d/0xe0 net/ipv4/af_inet.c:827 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x334/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmmsg+0x291/0x460 net/socket.c:2615 __compat_sys_sendmmsg net/compat.c:358 [inline] __do_compat_sys_sendmmsg net/compat.c:365 [inline] __se_compat_sys_sendmmsg net/compat.c:362 [inline] __ia32_compat_sys_sendmmsg+0x9f/0x100 net/compat.c:362 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7fa1549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f7b5cc EFLAGS: 00000296 ORIG_RAX: 0000000000000159 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020007fc0 RDX: 000000000800001d RSI: 0000000042250118 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x16c/0x16e net/core/skbuff.c:120 Code: f7 4c 8b 4c 24 10 8b 4b 70 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 80 10 5b 8b ff 74 24 10 ff 74 24 20 e8 ce 05 c0 ff <0f> 0b e8 8e 66 94 f7 4c 8b 64 24 18 e8 74 1c e1 f7 48 c7 c1 e0 1d RSP: 0018:ffffc900060e6e50 EFLAGS: 00010286 RAX: 0000000000000089 RBX: ffff888066bafe00 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff816574fc RDI: fffff52000c1cdbc RBP: ffffffff8b5b1e20 R08: 0000000000000089 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: ffffffff889ab16a R13: 0000000000000048 R14: ffffffff8b5b1040 R15: 0000000000000ec0 FS: 0000000000000000(0000) GS:ffff88802c900000(0063) knlGS:00000000f7f7bb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002c828000 CR3: 0000000050e5e000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi