====================================== | 0 | xx__-> [ 13.782562][ T230] ------------[ cut here ]------------ | [ 13.783024][ T230] WARNING: CPU: 0 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) | [ 13.783560][ T230] Modules linked in: [ 13.784429][ T230] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.784812][ 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) [ 13.785119][ 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 [ 13.786180][ T230] RSP: 0018:ffffc90000b073e8 EFLAGS: 00010202 [ 13.786567][ T230] RAX: 0000000000000007 RBX: 0000000000000004 RCX: ffffffff8e3f4955 [ 13.787010][ T230] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88800a8f1d86 [ 13.787460][ T230] RBP: ffff88800a8f1d80 R08: ffff888004b74118 R09: ffffed10009a5833 [ 13.787910][ T230] R10: ffff888004d2c19f R11: ffffc90000b07100 R12: ffff888004b74118 [ 13.788370][ T230] R13: ffff888004d2c000 R14: ffff888004d2c208 R15: ffff888004d2c000 [ 13.788814][ T230] FS: 000000003d3513c0(0000) GS:ffff8880a561a000(0000) knlGS:0000000000000000 [ 13.789425][ T230] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 13.789798][ T230] CR2: 00007f8d95a57000 CR3: 0000000009179002 CR4: 0000000000772ef0 [ 13.790243][ T230] PKRU: 55555554 [ 13.790474][ T230] Call Trace: [ 13.790697][ T230] [ 13.790855][ T230] ? dev_get_stats (net/core/dev.c:4143) [ 13.791159][ T230] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 13.791465][ T230] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) [ 13.791765][ T230] __dev_queue_xmit (net/core/dev.c:4786) [ 13.792071][ T230] ? netdev_core_pick_tx (net/core/dev.c:4728) [ 13.792371][ T230] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 13.792671][ T230] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 13.792966][ T230] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 13.793258][ T230] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 13.793567][ T230] ip_finish_output2 (./include/net/neighbour.h:556 net/ipv4/ip_output.c:237) [ 13.793863][ 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) [ 13.794154][ T230] ? ip_fragment.constprop.0 (net/ipv4/ip_output.c:201) [ 13.794460][ T230] ? __ip_finish_output (net/ipv4/ip_output.c:258 net/ipv4/ip_output.c:310) [ 13.794756][ T230] ip_output (./include/linux/netfilter.h:414 net/ipv4/ip_output.c:438) [ 13.794979][ T230] __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534) [ 13.795272][ 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)) [ 13.795577][ T230] __tcp_transmit_skb (net/ipv4/tcp_output.c:1628) [ 13.795885][ T230] ? __tcp_select_window (net/ipv4/tcp_output.c:1449) [ 13.796179][ T230] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 13.796484][ T230] ? ktime_get (./include/linux/seqlock.h:74 kernel/time/timekeeping.c:824) [ 13.796784][ T230] tcp_write_xmit (net/ipv4/tcp_output.c:2999) [ 13.797089][ T230] ? zerocopy_fill_skb_from_iter (net/core/datagram.c:750) [ 13.797465][ T230] ? tcp_retrans_try_collapse (net/ipv4/tcp_output.c:2903) [ 13.797769][ T230] __tcp_push_pending_frames (net/ipv4/tcp_output.c:3182) [ 13.798065][ T230] tcp_sendmsg_locked (net/ipv4/tcp.c:1375) [ 13.798384][ T230] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 13.798682][ T230] ? tcp_sendmsg_fastopen (net/ipv4/tcp.c:1078) [ 13.798979][ T230] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 13.799276][ T230] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 13.799581][ T230] tcp_sendmsg (net/ipv4/tcp.c:1413) [ 13.799804][ T230] __sys_sendto (net/socket.c:727 net/socket.c:742 net/socket.c:2244) [ 13.800097][ T230] ? __ia32_sys_getpeername (net/socket.c:2211) [ 13.800414][ T230] ? fput (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:470 ./include/linux/file_ref.h:150 fs/file_table.c:544) [ 13.800638][ T230] ? do_epoll_wait (./include/linux/file.h:63 ./include/linux/file.h:83 fs/eventpoll.c:2458) [ 13.800935][ T230] ? __x64_sys_epoll_wait (fs/eventpoll.c:2476) [ 13.801232][ T230] ? epoll_sendevents (fs/eventpoll.c:2476) [ 13.801531][ T230] ? __x64_sys_epoll_ctl (fs/eventpoll.c:2403 fs/eventpoll.c:2394 fs/eventpoll.c:2394) [ 13.801825][ T230] ? do_epoll_ctl (fs/eventpoll.c:2394) [ 13.802122][ T230] __x64_sys_sendto (net/socket.c:2247) [ 13.802423][ T230] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:124 arch/x86/entry/syscall_64.c:90) [ 13.802715][ T230] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 13.803011][ T230] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 13.803304][ T230] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 13.803677][ T230] RIP: 0033:0x4929ee [ 13.803910][ T230] Code: 4c 24 1c e8 d4 50 04 00 44 8b 54 24 1c 8b 3c 24 45 31 c9 41 89 c4 48 8b 54 24 10 48 8b 74 24 08 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 32 44 89 e7 48 89 04 24 e8 1e 51 04 00 48 8b All code ======== 0: 4c 24 1c rex.WR and $0x1c,%al 3: e8 d4 50 04 00 call 0x450dc 8: 44 8b 54 24 1c mov 0x1c(%rsp),%r10d d: 8b 3c 24 mov (%rsp),%edi 10: 45 31 c9 xor %r9d,%r9d 13: 41 89 c4 mov %eax,%r12d 16: 48 8b 54 24 10 mov 0x10(%rsp),%rdx 1b: 48 8b 74 24 08 mov 0x8(%rsp),%rsi 20: 45 31 c0 xor %r8d,%r8d 23: b8 2c 00 00 00 mov $0x2c,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 32 ja 0x64 32: 44 89 e7 mov %r12d,%edi 35: 48 89 04 24 mov %rax,(%rsp) 39: e8 1e 51 04 00 call 0x4515c 3e: 48 rex.W 3f: 8b .byte 0x8b Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 32 ja 0x3a 8: 44 89 e7 mov %r12d,%edi b: 48 89 04 24 mov %rax,(%rsp) f: e8 1e 51 04 00 call 0x45132 14: 48 rex.W 15: 8b .byte 0x8b [ 13.804969][ T230] RSP: 002b:00007ffdbb359c70 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 13.805427][ T230] RAX: ffffffffffffffda RBX: 00007ffdbb35a260 RCX: 00000000004929ee [ 13.805869][ T230] RDX: 0000000000000fa0 RSI: 000000003d361a30 RDI: 000000000000000a [ 13.806316][ T230] RBP: 00007ffdbb359cf0 R08: 0000000000000000 R09: 0000000000000000 [ 13.806765][ T230] R10: 0000000004000000 R11: 0000000000000246 R12: 0000000000000000 Finger prints: __dev_xmit_skb:__dev_queue_xmit:ip_finish_output2:ip_output:__ip_queue_xmit