======================================
|
| [ 1.889591] ------------[ cut here ]------------
| [ 1.889759] kernel BUG at net/core/skbuff.c:2813!
| [ 1.889803] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[ 1.889902] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 1.889975] RIP: 0010:__pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1))
[ 1.890020] Code: 44 24 10 e8 ad e4 81 ff 49 8b be c0 00 00 00 44 8b 44 24 10 41 8b 8e bc 00 00 00 e9 f4 fc ff ff 4c 8d 48 ff e9 41 fd ff ff 90 <0f> 0b 48 c7 44 24 10 00 00 00 00 e9 99 fe ff ff 41 f6 44 24 7e 20
All code
========
0: 44 24 10 rex.R and $0x10,%al
3: e8 ad e4 81 ff call 0xffffffffff81e4b5
8: 49 8b be c0 00 00 00 mov 0xc0(%r14),%rdi
f: 44 8b 44 24 10 mov 0x10(%rsp),%r8d
14: 41 8b 8e bc 00 00 00 mov 0xbc(%r14),%ecx
1b: e9 f4 fc ff ff jmp 0xfffffffffffffd14
20: 4c 8d 48 ff lea -0x1(%rax),%r9
24: e9 41 fd ff ff jmp 0xfffffffffffffd6a
29: 90 nop
2a:* 0f 0b ud2 <-- trapping instruction
2c: 48 c7 44 24 10 00 00 movq $0x0,0x10(%rsp)
33: 00 00
35: e9 99 fe ff ff jmp 0xfffffffffffffed3
3a: 41 f6 44 24 7e 20 testb $0x20,0x7e(%r12)
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 48 c7 44 24 10 00 00 movq $0x0,0x10(%rsp)
9: 00 00
b: e9 99 fe ff ff jmp 0xfffffffffffffea9
10: 41 f6 44 24 7e 20 testb $0x20,0x7e(%r12)
[ 1.890132] RSP: 0018:ffffb16f00114d80 EFLAGS: 00010282
[ 1.890174] RAX: 00000000fffffff2 RBX: 0000000000000014 RCX: 0000000000000014
[ 1.890225] RDX: ffff9d08c269cdc4 RSI: 0000000000000100 RDI: 0000000000000000
[ 1.890277] RBP: ffffb16f00114dc0 R08: 00000000ffffffd8 R09: ffff9d08c38a1000
[ 1.890329] R10: 0000000000000008 R11: ffff9d08c258dfd4 R12: 00000000ffffffff
[ 1.890381] R13: 0000000000000014 R14: ffff9d08c258df00 R15: 0000000000000001
[ 1.890433] FS: 00007f29b20f5740(0000) GS:ffff9d08fed00000(0000) knlGS:0000000000000000
[ 1.890484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1.890526] CR2: 00007f29b2266160 CR3: 000000000191a001 CR4: 0000000000770ef0
[ 1.890577] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1.890627] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1.890678] PKRU: 55555554
[ 1.890698] Call Trace:
[ 1.890723]
[ 1.890745] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447)
[ 1.890779] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154)
[ 1.890807] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1))
[ 1.890836] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175)
[ 1.890865] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1))
[ 1.890894] ? exc_invalid_op (arch/x86/kernel/traps.c:265)
[ 1.890926] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1))
[ 1.890954] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568)
[ 1.890987] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1))
[ 1.891015] tcp_v4_rcv (./include/linux/skbuff.h:2731 ./include/linux/skbuff.h:2739 net/ipv4/tcp_ipv4.c:2181)
[ 1.891049] ? raw_local_deliver (net/ipv4/raw.c:199)
[ 1.891083] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1))
[ 1.891121] ip_local_deliver_finish (./include/linux/rcupdate.h:782 net/ipv4/ip_input.c:234)
[ 1.891155] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4))
[ 1.891193] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053)
[ 1.891224] __napi_poll (net/core/dev.c:6703)
[ 1.891254] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886)
[ 1.891285] __do_softirq (kernel/softirq.c:553)
[ 1.891315] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441)
[ 1.891347]
[ 1.891368]
[ 1.891389] __local_bh_enable_ip (kernel/softirq.c:381)
[ 1.891418] __dev_queue_xmit (net/core/dev.c:4400)
[ 1.891448] ip_finish_output2 (./include/linux/netdevice.h:3172 ./include/net/neighbour.h:526 ./include/net/neighbour.h:540 net/ipv4/ip_output.c:235)
[ 1.891475] __ip_queue_xmit (net/ipv4/ip_output.c:535)
[ 1.891505] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4))
[ 1.891540] tcp_write_xmit (net/ipv4/tcp_output.c:2792)
[ 1.891571] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977)
[ 1.891608] __tcp_close (net/ipv4/tcp.c:2842)
[ 1.891641] tcp_close (net/ipv4/tcp.c:2932)
[ 1.891673] inet_release (net/ipv4/af_inet.c:436)
[ 1.891703] __sock_release (net/socket.c:659)
[ 1.891737] sock_close (net/socket.c:1423)
[ 1.891763] __fput (fs/file_table.c:376)
[ 1.891792] __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539)
[ 1.891821] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 1.891852] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129)
[ 1.891893] RIP: 0033:0x7f29b2237007
[ 1.891923] Code: ff e8 fd e2 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 c3 cb f5 ff
All code
========
0: ff (bad)
1: e8 fd e2 01 00 call 0x1e303
6: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
d: 00 00 00
10: 0f 1f 00 nopl (%rax)
13: f3 0f 1e fa endbr64
17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax
1e: 00
1f: 85 c0 test %eax,%eax
21: 75 10 jne 0x33
23: b8 03 00 00 00 mov $0x3,%eax
28: 0f 05 syscall
2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction
30: 77 41 ja 0x73
32: c3 ret
33: 48 83 ec 18 sub $0x18,%rsp
37: 89 7c 24 0c mov %edi,0xc(%rsp)
3b: e8 c3 cb f5 ff call 0xfffffffffff5cc03
Code starting with the faulting instruction
===========================================
0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax
6: 77 41 ja 0x49
8: c3 ret
9: 48 83 ec 18 sub $0x18,%rsp
d: 89 7c 24 0c mov %edi,0xc(%rsp)
11: e8 c3 cb f5 ff call 0xfffffffffff5cbd9
[ 1.892029] RSP: 002b:00007ffe4c0ffb28 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[ 1.892079] RAX: ffffffffffffffda RBX: 0000000000000010 RCX: 00007f29b2237007
[ 1.892132] RDX: 0000000000000012 RSI: 0000000000000002 RDI: 0000000000000011
[ 1.892182] RBP: 0000000000000011 R08: 0000000000000000 R09: 0000000000000000
[ 1.892233] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
Finger prints:
__pskb_pull_tail:tcp_v4_rcv:ip_protocol_deliver_rcu:ip_local_deliver_finish