====================================== | 0 | xx__-> [ 14.917861][ T232] ------------[ cut here ]------------ | [ 14.918317][ T232] WARNING: CPU: 0 PID: 232 at ./include/net/sch_generic.h:843 __dev_xmit_skb (./include/net/sch_generic.h:843 ./include/net/sch_generic.h:889 ./include/net/sch_generic.h:901 net/core/dev.c:4239) | [ 14.918844][ T232] Modules linked in: [ 14.919716][ T232] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.920088][ T232] RIP: 0010:__dev_xmit_skb (./include/net/sch_generic.h:843 ./include/net/sch_generic.h:889 ./include/net/sch_generic.h:901 net/core/dev.c:4239) [ 14.920397][ T232] Code: 7d 06 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 86 0d 00 00 66 83 7d 06 00 74 04 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 28 48 89 fa 48 All code ======== 0: 7d 06 jge 0x8 2: 48 89 fa mov %rdi,%rdx 5: 48 c1 ea 03 shr $0x3,%rdx 9: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx d: 48 89 f8 mov %rdi,%rax 10: 83 e0 07 and $0x7,%eax 13: 83 c0 01 add $0x1,%eax 16: 38 d0 cmp %dl,%al 18: 7c 08 jl 0x22 1a: 84 d2 test %dl,%dl 1c: 0f 85 86 0d 00 00 jne 0xda8 22: 66 83 7d 06 00 cmpw $0x0,0x6(%rbp) 27: 74 04 je 0x2d 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 34: fc ff df 37: 49 8d 7c 24 28 lea 0x28(%r12),%rdi 3c: 48 89 fa mov %rdi,%rdx 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax a: fc ff df d: 49 8d 7c 24 28 lea 0x28(%r12),%rdi 12: 48 89 fa mov %rdi,%rdx 15: 48 rex.W [ 14.921472][ T232] RSP: 0018:ffffc90000527640 EFLAGS: 00010202 [ 14.921855][ T232] RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffffa37f4955 [ 14.922305][ T232] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88800a41e106 [ 14.922757][ T232] RBP: ffff88800a41e100 R08: ffff888008750118 R09: ffffed1000a49233 [ 14.923198][ T232] R10: ffff88800524919f R11: ffffc90000527358 R12: ffff888008750118 [ 14.923662][ T232] R13: ffff888005249000 R14: ffff888005249208 R15: ffff888005249000 [ 14.924105][ T232] FS: 00000000355393c0(0000) GS:ffff88809021a000(0000) knlGS:0000000000000000 [ 14.924642][ T232] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 14.925015][ T232] CR2: 00007f68d875f000 CR3: 0000000009cdc002 CR4: 0000000000772ef0 [ 14.925457][ T232] PKRU: 55555554 [ 14.925688][ T232] Call Trace: [ 14.925910][ T232] [ 14.926067][ T232] ? dev_get_stats (net/core/dev.c:4143) [ 14.926448][ T232] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 14.926755][ T232] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) [ 14.927055][ T232] __dev_queue_xmit (net/core/dev.c:4786) [ 14.927367][ T232] ? netdev_core_pick_tx (net/core/dev.c:4728) [ 14.927667][ T232] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.927967][ T232] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 14.928259][ T232] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 14.928556][ T232] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 14.928867][ T232] ip_finish_output2 (./include/net/neighbour.h:556 net/ipv4/ip_output.c:237) [ 14.929163][ T232] ? ip_skb_dst_mtu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/ip.h:504 ./include/net/ip.h:518) [ 14.929455][ T232] ? ip_fragment.constprop.0 (net/ipv4/ip_output.c:201) [ 14.929754][ T232] ? ip_skb_dst_mtu (./include/net/ip.h:523) [ 14.930051][ T232] ? __ip_finish_output (./include/linux/skbuff.h:1724 ./include/linux/skbuff.h:5149 net/ipv4/ip_output.c:309) [ 14.930351][ T232] ip_output (./include/linux/netfilter.h:414 net/ipv4/ip_output.c:438) [ 14.930583][ T232] __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534) [ 14.930879][ T232] ? __skb_clone (./arch/x86/include/asm/atomic.h:53 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:992 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:436 (discriminator 4) net/core/skbuff.c:1585 (discriminator 4)) [ 14.931175][ T232] __tcp_transmit_skb (net/ipv4/tcp_output.c:1628) [ 14.931491][ T232] ? __tcp_select_window (net/ipv4/tcp_output.c:1449) [ 14.931793][ T232] ? tcp_call_bpf (./include/net/sock.h:1685 ./include/net/sock.h:1780 ./include/net/tcp.h:2775) [ 14.932096][ T232] ? tcp_ca_dst_init (./include/net/tcp.h:2767) [ 14.932407][ T232] tcp_connect (net/ipv4/tcp_output.c:1646 net/ipv4/tcp_output.c:4335) [ 14.932715][ T232] tcp_v4_connect (net/ipv4/tcp_ipv4.c:347) [ 14.933017][ T232] ? tcp_v4_conn_request (net/ipv4/tcp_ipv4.c:225) [ 14.933311][ T232] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) [ 14.933615][ T232] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.933919][ T232] __inet_stream_connect (net/ipv4/af_inet.c:679) [ 14.934214][ T232] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 14.934514][ T232] ? __inet_stream_connect (net/ipv4/af_inet.c:746) [ 14.934815][ T232] inet_stream_connect (net/ipv4/af_inet.c:751) [ 14.935109][ T232] __sys_connect (./include/linux/file.h:62 ./include/linux/file.h:83 net/socket.c:2111) [ 14.935401][ T232] ? __sys_connect_file (net/socket.c:2109) [ 14.935700][ T232] ? do_fcntl (fs/fcntl.c:476) [ 14.935923][ T232] ? f_getown (fs/fcntl.c:446) [ 14.936145][ T232] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 fs/file.c:1072) [ 14.936442][ T232] ? __fget_files (fs/file.c:1075) [ 14.936742][ T232] ? update_socket_protocol+0x10/0x10 [ 14.937044][ T232] __x64_sys_connect (net/socket.c:2124) [ 14.937335][ T232] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 14.937637][ T232] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 14.937933][ T232] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 14.938295][ T232] RIP: 0033:0x49264b [ 14.938530][ T232] Code: 83 ec 18 89 54 24 0c 48 89 34 24 89 7c 24 08 e8 6b 54 04 00 8b 54 24 0c 48 8b 34 24 41 89 c0 8b 7c 24 08 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 08 e8 c1 54 04 00 8b 44 All code ======== 0: 83 ec 18 sub $0x18,%esp 3: 89 54 24 0c mov %edx,0xc(%rsp) 7: 48 89 34 24 mov %rsi,(%rsp) b: 89 7c 24 08 mov %edi,0x8(%rsp) f: e8 6b 54 04 00 call 0x4547f 14: 8b 54 24 0c mov 0xc(%rsp),%edx 18: 48 8b 34 24 mov (%rsp),%rsi 1c: 41 89 c0 mov %eax,%r8d 1f: 8b 7c 24 08 mov 0x8(%rsp),%edi 23: b8 2a 00 00 00 mov $0x2a,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 35 ja 0x67 32: 44 89 c7 mov %r8d,%edi 35: 89 44 24 08 mov %eax,0x8(%rsp) 39: e8 c1 54 04 00 call 0x454ff 3e: 8b .byte 0x8b 3f: 44 rex.R Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 35 ja 0x3d 8: 44 89 c7 mov %r8d,%edi b: 89 44 24 08 mov %eax,0x8(%rsp) f: e8 c1 54 04 00 call 0x454d5 14: 8b .byte 0x8b 15: 44 rex.R [ 14.939587][ T232] RSP: 002b:00007fff6d5f45c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 14.940031][ T232] RAX: ffffffffffffffda RBX: 00007fff6d5f4c10 RCX: 000000000049264b [ 14.940472][ T232] RDX: 0000000000000010 RSI: 00007fff6d5f4610 RDI: 0000000000000009 [ 14.940921][ T232] RBP: 00007fff6d5f46a0 R08: 0000000000000000 R09: 00000000ffffffff [ 14.941375][ T232] R10: 0000000000000001 R11: 0000000000000293 R12: 00007fff6d5f4b88 Finger prints: __dev_xmit_skb:__dev_queue_xmit:ip_finish_output2:ip_output:__ip_queue_xmit