====================================== | 0 | xx__-> [ 14.870492][ T230] ------------[ cut here ]------------ | [ 14.870970][ T230] WARNING: CPU: 2 PID: 230 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) | [ 14.871513][ T230] Modules linked in: [ 14.872454][ T230] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.872866][ T230] 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) [ 14.873195][ T230] 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 [ 14.874289][ T230] RSP: 0018:ffffc90000777640 EFLAGS: 00010202 [ 14.874704][ T230] RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffff917f4955 [ 14.875172][ T230] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880100b3606 [ 14.875656][ T230] RBP: ffff8880100b3600 R08: ffff888011f04118 R09: ffffed100235ee33 [ 14.876159][ T230] R10: ffff888011af719f R11: ffffc90000777358 R12: ffff888011f04118 [ 14.876661][ T230] R13: ffff888011af7000 R14: ffff888011af7208 R15: ffff888011af7000 [ 14.877125][ T230] FS: 000000002f5bb3c0(0000) GS:ffff8880a231a000(0000) knlGS:0000000000000000 [ 14.877686][ T230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 14.878082][ T230] CR2: 00007f7bca10f000 CR3: 00000000124ec005 CR4: 0000000000772ef0 [ 14.878549][ T230] PKRU: 55555554 [ 14.878805][ T230] Call Trace: [ 14.879192][ T230] [ 14.879374][ T230] ? dev_get_stats (net/core/dev.c:4143) [ 14.879712][ T230] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 14.880030][ T230] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) [ 14.880354][ T230] __dev_queue_xmit (net/core/dev.c:4786) [ 14.880694][ T230] ? netdev_core_pick_tx (net/core/dev.c:4728) [ 14.881008][ T230] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.881328][ T230] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 14.881650][ T230] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 14.881978][ T230] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 14.882306][ T230] ip_finish_output2 (./include/net/neighbour.h:556 net/ipv4/ip_output.c:237) [ 14.882627][ T230] ? ip_skb_dst_mtu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/ip.h:504 ./include/net/ip.h:518) [ 14.882956][ T230] ? ip_fragment.constprop.0 (net/ipv4/ip_output.c:201) [ 14.883272][ T230] ? ip_skb_dst_mtu (./include/net/ip.h:523) [ 14.883591][ T230] ? __ip_finish_output (./include/linux/skbuff.h:1724 ./include/linux/skbuff.h:5149 net/ipv4/ip_output.c:309) [ 14.883921][ T230] ip_output (./include/linux/netfilter.h:414 net/ipv4/ip_output.c:438) [ 14.884172][ T230] __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534) [ 14.884489][ T230] ? __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)) [ 14.884817][ T230] __tcp_transmit_skb (net/ipv4/tcp_output.c:1628) [ 14.885150][ T230] ? __tcp_select_window (net/ipv4/tcp_output.c:1449) [ 14.885468][ T230] ? tcp_call_bpf (./include/net/sock.h:1685 ./include/net/sock.h:1780 ./include/net/tcp.h:2775) [ 14.885793][ T230] ? tcp_ca_dst_init (./include/net/tcp.h:2767) [ 14.886123][ T230] tcp_connect (net/ipv4/tcp_output.c:1646 net/ipv4/tcp_output.c:4335) [ 14.886479][ T230] tcp_v4_connect (net/ipv4/tcp_ipv4.c:347) [ 14.886814][ T230] ? tcp_v4_conn_request (net/ipv4/tcp_ipv4.c:225) [ 14.887125][ T230] ? 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) [ 14.887441][ T230] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.887772][ T230] __inet_stream_connect (net/ipv4/af_inet.c:679) [ 14.888086][ T230] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 14.888409][ T230] ? __inet_stream_connect (net/ipv4/af_inet.c:746) [ 14.888731][ T230] inet_stream_connect (net/ipv4/af_inet.c:751) [ 14.889047][ T230] __sys_connect (./include/linux/file.h:62 ./include/linux/file.h:83 net/socket.c:2111) [ 14.889360][ T230] ? __sys_connect_file (net/socket.c:2109) [ 14.889680][ T230] ? do_fcntl (fs/fcntl.c:476) [ 14.889927][ T230] ? f_getown (fs/fcntl.c:446) [ 14.890172][ T230] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 fs/file.c:1072) [ 14.890488][ T230] ? __fget_files (fs/file.c:1075) [ 14.890813][ T230] ? update_socket_protocol+0x10/0x10 [ 14.891143][ T230] __x64_sys_connect (net/socket.c:2124) [ 14.891456][ T230] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 14.891785][ T230] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 14.892110][ T230] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 14.892497][ T230] RIP: 0033:0x49264b [ 14.892772][ T230] 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 [ 14.893856][ T230] RSP: 002b:00007ffc78afe550 EFLAGS: 00000293 ORIG_RAX: 000000000000002a [ 14.894322][ T230] RAX: ffffffffffffffda RBX: 00007ffc78afeba0 RCX: 000000000049264b [ 14.894793][ T230] RDX: 0000000000000010 RSI: 00007ffc78afe5a0 RDI: 0000000000000009 [ 14.895265][ T230] RBP: 00007ffc78afe630 R08: 0000000000000000 R09: 00000000ffffffff [ 14.895742][ T230] R10: 0000000000000001 R11: 0000000000000293 R12: 00007ffc78afeb18 Finger prints: __dev_xmit_skb:__dev_queue_xmit:ip_finish_output2:ip_output:__ip_queue_xmit