====================================== | 0 | xx__-> [ 20.030076][ T232] ------------[ cut here ]------------ | [ 20.030667][ 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) | [ 20.031299][ T232] Modules linked in: [ 20.032363][ T232] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 20.032805][ 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) [ 20.033188][ 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 [ 20.034554][ T232] RSP: 0018:ffffc90000a975a8 EFLAGS: 00010202 [ 20.035115][ T232] RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffffaeff4955 [ 20.035741][ T232] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888008e48c06 [ 20.036357][ T232] RBP: ffff888008e48c00 R08: ffff888004e30118 R09: ffffed10012e6233 [ 20.037136][ T232] R10: ffff88800973119f R11: ffffc90000a972c0 R12: ffff888004e30118 [ 20.038030][ T232] R13: ffff888009731000 R14: ffff888009731208 R15: ffff888009731000 [ 20.038877][ T232] FS: 000000001a96f3c0(0000) GS:ffff888084a1a000(0000) knlGS:0000000000000000 [ 20.039856][ T232] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.040607][ T232] CR2: 00007f332b88f000 CR3: 000000000928b004 CR4: 0000000000772ef0 [ 20.041454][ T232] PKRU: 55555554 [ 20.041897][ T232] Call Trace: [ 20.042309][ T232] [ 20.042592][ T232] ? dev_get_stats (net/core/dev.c:4143) [ 20.043388][ T232] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) [ 20.043938][ T232] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831) [ 20.044495][ T232] __dev_queue_xmit (net/core/dev.c:4786) [ 20.045123][ T232] ? netdev_core_pick_tx (net/core/dev.c:4728) [ 20.045675][ T232] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 20.046246][ T232] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 20.046790][ T232] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472) [ 20.047346][ T232] ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617) [ 20.047907][ T232] ip_finish_output2 (./include/net/neighbour.h:556 net/ipv4/ip_output.c:237) [ 20.048456][ 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) [ 20.049002][ T232] ? ip_fragment.constprop.0 (net/ipv4/ip_output.c:201) [ 20.049521][ T232] ? ip_skb_dst_mtu (./include/net/ip.h:523) [ 20.050039][ T232] ? __ip_finish_output (./include/linux/skbuff.h:1724 ./include/linux/skbuff.h:5149 net/ipv4/ip_output.c:309) [ 20.050564][ T232] ip_output (./include/linux/netfilter.h:414 net/ipv4/ip_output.c:438) [ 20.050986][ T232] __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534) [ 20.051381][ 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)) [ 20.051832][ T232] __tcp_transmit_skb (net/ipv4/tcp_output.c:1628) [ 20.052230][ T232] ? __tcp_select_window (net/ipv4/tcp_output.c:1449) [ 20.052569][ T232] ? find_held_lock (kernel/locking/lockdep.c:5350) [ 20.053042][ T232] ? ktime_get (./include/linux/seqlock.h:74 kernel/time/timekeeping.c:824) [ 20.053431][ T232] tcp_write_xmit (net/ipv4/tcp_output.c:2999) [ 20.053802][ T232] ? __build_skb_around (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 net/core/skbuff.c:387 net/core/skbuff.c:444) [ 20.054161][ T232] ? __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) [ 20.054499][ T232] ? tcp_retrans_try_collapse (net/ipv4/tcp_output.c:2903) [ 20.054850][ T232] ? inet_sk_state_store (net/ipv4/af_inet.c:1376) [ 20.055200][ T232] ? tcp_set_state (net/ipv4/tcp.c:2947 (discriminator 53)) [ 20.055535][ T232] ? tcp_call_bpf.constprop.0.isra.0 (net/ipv4/tcp.c:2947) [ 20.055975][ T232] __tcp_push_pending_frames (net/ipv4/tcp_output.c:3182) [ 20.056309][ T232] __tcp_close (net/ipv4/tcp.c:3208) [ 20.056668][ T232] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455) [ 20.057041][ T232] tcp_close (net/ipv4/tcp.c:3300) [ 20.057309][ T232] inet_release (net/ipv4/af_inet.c:438) [ 20.057660][ T232] __sock_release (net/socket.c:663) [ 20.058046][ T232] sock_close (net/socket.c:1457) [ 20.058336][ T232] __fput (fs/file_table.c:468) [ 20.058606][ T232] fput_close_sync (fs/file_table.c:571) [ 20.058974][ T232] ? alloc_file_clone (fs/file_table.c:571) [ 20.059312][ T232] __x64_sys_close (fs/open.c:1592 fs/open.c:1574 fs/open.c:1574) [ 20.059656][ T232] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) [ 20.060011][ T232] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 20.060428][ T232] RIP: 0033:0x4901eb [ 20.060696][ T232] Code: 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 78 04 00 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 21 79 04 00 8b 44 All code ======== 0: 03 00 add (%rax),%eax 2: 00 00 add %al,(%rax) 4: 0f 05 syscall 6: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax c: 77 41 ja 0x4f e: c3 ret f: 48 83 ec 18 sub $0x18,%rsp 13: 89 7c 24 0c mov %edi,0xc(%rsp) 17: e8 c3 78 04 00 call 0x478df 1c: 8b 7c 24 0c mov 0xc(%rsp),%edi 20: 41 89 c0 mov %eax,%r8d 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 35 ja 0x67 32: 44 89 c7 mov %r8d,%edi 35: 89 44 24 0c mov %eax,0xc(%rsp) 39: e8 21 79 04 00 call 0x4795f 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 0c mov %eax,0xc(%rsp) f: e8 21 79 04 00 call 0x47935 14: 8b .byte 0x8b 15: 44 rex.R [ 20.061966][ T232] RSP: 002b:00007fff22fed340 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 20.062486][ T232] RAX: ffffffffffffffda RBX: 00007fff22fed900 RCX: 00000000004901eb [ 20.063049][ T232] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 000000000000000a [ 20.063630][ T232] RBP: 00007fff22fed390 R08: 0000000000000000 R09: 00000000002014f2 [ 20.064210][ T232] R10: 0000000000000001 R11: 0000000000000293 R12: 00007fff22fed878 Finger prints: __dev_xmit_skb:__dev_queue_xmit:ip_finish_output2:ip_output:__ip_queue_xmit