====================================== | 0 | xx__-> [ 14.470186][ T231] ------------[ cut here ]------------ | [ 14.470681][ T231] WARNING: CPU: 3 PID: 231 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) | [ 14.471198][ T231] Modules linked in: [ 14.472084][ T231] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.472472][ T231] 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) [ 14.472797][ T231] 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 [ 14.473869][ T231] RSP: 0018:ffffc900007472e0 EFLAGS: 00010202 [ 14.474255][ T231] RAX: 0000000000000007 RBX: 0000000000000002 RCX: ffffffffa4ff4955 [ 14.474715][ T231] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88800a628506 [ 14.475163][ T231] RBP: ffff88800a628500 R08: ffff888005094118 R09: ffffed10011c60b3 [ 14.475622][ T231] R10: ffff888008e3059f R11: ffffc90000746ff8 R12: ffff888005094118 [ 14.476071][ T231] R13: ffff888008e30400 R14: ffff888008e30608 R15: ffff888008e30400 [ 14.476529][ T231] FS: 0000000027fd83c0(0000) GS:ffff88808eb9a000(0000) knlGS:0000000000000000 [ 14.477055][ T231] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 14.477434][ T231] CR2: 00007f6897f37000 CR3: 0000000009e5d003 CR4: 0000000000772ef0 [ 14.478011][ T231] PKRU: 55555554 [ 14.478241][ T231] Call Trace: [ 14.478464][ T231] [ 14.478634][ T231] ? dev_get_stats (net/core/dev.c:4143) [ 14.478950][ T231] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 14.479249][ T231] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) [ 14.479560][ T231] __dev_queue_xmit (net/core/dev.c:4786) [ 14.479868][ T231] ? netdev_core_pick_tx (net/core/dev.c:4728) [ 14.480162][ T231] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.480467][ T231] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 14.480774][ T231] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 14.481071][ T231] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 14.481379][ T231] ip_finish_output2 (./include/net/neighbour.h:556 net/ipv4/ip_output.c:237) [ 14.481690][ T231] ? ip_skb_dst_mtu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/ip.h:504 ./include/net/ip.h:518) [ 14.481990][ T231] ? ip_fragment.constprop.0 (net/ipv4/ip_output.c:201) [ 14.482291][ T231] ? __ip_finish_output (net/ipv4/ip_output.c:258 net/ipv4/ip_output.c:310) [ 14.482598][ T231] ip_output (./include/linux/netfilter.h:414 net/ipv4/ip_output.c:438) [ 14.482825][ T231] __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534) [ 14.483123][ T231] ? __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)) [ 14.483421][ T231] __tcp_transmit_skb (net/ipv4/tcp_output.c:1628) [ 14.483736][ T231] ? get_page (./arch/x86/include/asm/atomic.h:53 ./include/linux/atomic/atomic-arch-fallback.h:992 ./include/linux/atomic/atomic-instrumented.h:436 ./include/linux/page_ref.h:153 ./include/linux/page_ref.h:160 ./include/linux/mm.h:1387 ./include/linux/mm.h:1397) [ 14.483965][ T231] ? __tcp_select_window (net/ipv4/tcp_output.c:1449) [ 14.484284][ T231] tcp_write_xmit (net/ipv4/tcp_output.c:2999) [ 14.484599][ T231] ? __alloc_skb (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/refcount.h:134 net/core/skbuff.c:698) [ 14.484897][ T231] ? tcp_retrans_try_collapse (net/ipv4/tcp_output.c:2903) [ 14.485198][ T231] ? skb_do_copy_data_nocache (./include/net/sock.h:2281) [ 14.485507][ T231] ? trace_tcp_ao_handshake_failure (./include/net/sock.h:2275) [ 14.485883][ T231] __tcp_push_pending_frames (net/ipv4/tcp_output.c:3182) [ 14.486181][ T231] tcp_sendmsg_locked (net/ipv4/tcp.c:1375) [ 14.486501][ T231] ? tcp_sendmsg_fastopen (net/ipv4/tcp.c:1078) [ 14.486802][ T231] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.487107][ T231] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 14.487409][ T231] tcp_sendmsg (net/ipv4/tcp.c:1413) [ 14.487642][ T231] sock_write_iter (net/socket.c:727 net/socket.c:742 net/socket.c:1195) [ 14.487949][ T231] ? ____sys_recvmsg (net/socket.c:1176) [ 14.488261][ T231] ? __lock_acquire (kernel/locking/lockdep.c:5237) [ 14.488572][ T231] vfs_write (fs/read_write.c:594 fs/read_write.c:686) [ 14.488801][ T231] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 14.489096][ T231] ? kernel_write (fs/read_write.c:667) [ 14.489397][ T231] ? __fget_files (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 fs/file.c:1072) [ 14.489717][ T231] ksys_write (fs/read_write.c:738) [ 14.489945][ T231] ? __ia32_sys_read (fs/read_write.c:728) [ 14.490252][ T231] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 14.490561][ T231] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 14.490932][ T231] RIP: 0033:0x49002f [ 14.491166][ T231] Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 89 7a 04 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 dc 7a 04 00 48 All code ======== 0: 89 54 24 18 mov %edx,0x18(%rsp) 4: 48 89 74 24 10 mov %rsi,0x10(%rsp) 9: 89 7c 24 08 mov %edi,0x8(%rsp) d: e8 89 7a 04 00 call 0x47a9b 12: 48 8b 54 24 18 mov 0x18(%rsp),%rdx 17: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 1c: 41 89 c0 mov %eax,%r8d 1f: 8b 7c 24 08 mov 0x8(%rsp),%edi 23: b8 01 00 00 00 mov $0x1,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 31 ja 0x63 32: 44 89 c7 mov %r8d,%edi 35: 48 89 44 24 08 mov %rax,0x8(%rsp) 3a: e8 dc 7a 04 00 call 0x47b1b 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 31 ja 0x39 8: 44 89 c7 mov %r8d,%edi b: 48 89 44 24 08 mov %rax,0x8(%rsp) 10: e8 dc 7a 04 00 call 0x47af1 15: 48 rex.W [ 14.492242][ T231] RSP: 002b:00007ffe01e17370 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 14.492699][ T231] RAX: ffffffffffffffda RBX: 00007ffe01e17960 RCX: 000000000049002f [ 14.493144][ T231] RDX: 0000000000002710 RSI: 0000000027fe7ae0 RDI: 000000000000000a [ 14.493602][ T231] RBP: 00007ffe01e173f0 R08: 0000000000000000 R09: 0000000000000280 [ 14.494050][ T231] R10: 0000000000000010 R11: 0000000000000293 R12: 00007ffe01e178d8 Finger prints: __dev_xmit_skb:__dev_queue_xmit:ip_finish_output2:ip_output:__ip_queue_xmit