====================================== | [ 2.694165] ip (292) used greatest stack depth: 12296 bytes left | [ 19.232518] ------------[ cut here ]------------ | [ 19.232579] kernel BUG at net/core/skbuff.c:5103! | [ 19.232624] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 19.232707] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 19.232814] RIP: 0010:__skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) [ 19.232860] Code: 00 00 00 e9 d8 fe ff ff 41 8d 54 24 ff 48 63 d2 48 c1 e2 05 41 f6 44 15 00 02 74 84 e9 b9 fe ff ff 85 db 0f 84 b7 fe ff ff 90 <0f> 0b 41 89 c4 e9 ac fe ff ff 90 0f 0b 4c 8b 0d 30 7f d4 00 e9 e9 All code ======== 0: 00 00 add %al,(%rax) 2: 00 e9 add %ch,%cl 4: d8 fe fdivr %st(6),%st 6: ff (bad) 7: ff 41 8d incl -0x73(%rcx) a: 54 push %rsp b: 24 ff and $0xff,%al d: 48 63 d2 movslq %edx,%rdx 10: 48 c1 e2 05 shl $0x5,%rdx 14: 41 f6 44 15 00 02 testb $0x2,0x0(%r13,%rdx,1) 1a: 74 84 je 0xffffffffffffffa0 1c: e9 b9 fe ff ff jmp 0xfffffffffffffeda 21: 85 db test %ebx,%ebx 23: 0f 84 b7 fe ff ff je 0xfffffffffffffee0 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 41 89 c4 mov %eax,%r12d 2f: e9 ac fe ff ff jmp 0xfffffffffffffee0 34: 90 nop 35: 0f 0b ud2 37: 4c 8b 0d 30 7f d4 00 mov 0xd47f30(%rip),%r9 # 0xd47f6e 3e: e9 .byte 0xe9 3f: e9 .byte 0xe9 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 41 89 c4 mov %eax,%r12d 5: e9 ac fe ff ff jmp 0xfffffffffffffeb6 a: 90 nop b: 0f 0b ud2 d: 4c 8b 0d 30 7f d4 00 mov 0xd47f30(%rip),%r9 # 0xd47f44 14: e9 .byte 0xe9 15: e9 .byte 0xe9 [ 19.232977] RSP: 0018:ffffa7f240114b88 EFLAGS: 00010202 [ 19.233018] RAX: 0000000000000058 RBX: 0000000000000040 RCX: 0000000000000001 [ 19.233070] RDX: ffff9beec27b5ac0 RSI: 0000000000000001 RDI: ffff9beec1943d00 [ 19.233123] RBP: 0000000000000058 R08: 0000000000000000 R09: ffff9beec27b5800 [ 19.233177] R10: 00000000000002c0 R11: 0000000000000002 R12: 0000000000000002 [ 19.233231] R13: ffff9beec27b5e18 R14: ffff9beec27b5c00 R15: 0000000000000000 [ 19.233285] FS: 00007fb9f3e00300(0000) GS:ffff9beefed00000(0000) knlGS:0000000000000000 [ 19.233337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 19.233383] CR2: 00007fb9f408f840 CR3: 000000000249a001 CR4: 0000000000770ef0 [ 19.233431] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 19.233483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 19.233529] PKRU: 55555554 [ 19.233544] Call Trace: [ 19.233563] [ 19.233582] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 19.233614] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 19.233644] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) [ 19.233674] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 19.233703] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) [ 19.233734] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 19.233763] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) [ 19.233792] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 19.233822] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) [ 19.233851] skb_to_sgvec (net/core/skbuff.c:5123) [ 19.233882] esp_output_tail (net/ipv4/esp4.c:578) [ 19.233917] esp_xmit (net/ipv4/esp4_offload.c:342) [ 19.233949] validate_xmit_xfrm (net/xfrm/xfrm_device.c:184) [ 19.233980] ? validate_xmit_skb (net/core/dev.c:3632) [ 19.234008] __dev_queue_xmit (net/core/dev.c:4364) [ 19.234039] ? eth_header (net/ethernet/eth.c:85) [ 19.234073] __neigh_update (net/core/neighbour.c:1461) [ 19.234104] arp_process (./include/net/neighbour.h:444 (discriminator 4) net/ipv4/arp.c:934 (discriminator 4)) [ 19.234137] ? ip_finish_output2 (net/ipv4/ip_output.c:245) [ 19.234179] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 5)) [ 19.234216] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) [ 19.234246] __napi_poll (net/core/dev.c:6703) [ 19.234282] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) [ 19.234323] __do_softirq (kernel/softirq.c:553) [ 19.234357] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 19.234389] [ 19.234411] [ 19.234432] __local_bh_enable_ip (kernel/softirq.c:381) [ 19.234460] __neigh_event_send (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/neigh.h:237 net/core/neighbour.c:1246) [ 19.234490] neigh_resolve_output (net/core/neighbour.c:1547) [ 19.234530] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) [ 19.234561] ? __ip_finish_output (./include/linux/skbuff.h:4942 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) [ 19.234596] ip_push_pending_frames (./include/net/dst.h:450 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1496 net/ipv4/ip_output.c:1516) [ 19.234636] raw_sendmsg (net/ipv4/raw.c:648) [ 19.234671] ? next_uptodate_folio (./include/linux/xarray.h:1699 mm/filemap.c:3395) [ 19.234712] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 19.234744] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 19.234775] ? handle_mm_fault (mm/memory.c:5330 mm/memory.c:5486) [ 19.234807] ? do_user_addr_fault (./include/linux/rcupdate.h:782 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) [ 19.234845] __x64_sys_sendto (net/socket.c:2203 net/socket.c:2199 net/socket.c:2199) [ 19.234874] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 19.234904] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 19.234946] RIP: 0033:0x7fb9f40d685a [ 19.234975] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 All code ======== 0: d8 64 89 02 fsubs 0x2(%rcx,%rcx,4) 4: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax b: eb b8 jmp 0xffffffffffffffc5 d: 0f 1f 00 nopl (%rax) 10: f3 0f 1e fa endbr64 14: 41 89 ca mov %ecx,%r10d 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 15 jne 0x38 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 7e ja 0xb0 32: c3 ret 33: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 38: 41 54 push %r12 3a: 48 83 ec 30 sub $0x30,%rsp 3e: 44 rex.R 3f: 89 .byte 0x89 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 7e ja 0x86 8: c3 ret 9: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) e: 41 54 push %r12 10: 48 83 ec 30 sub $0x30,%rsp 14: 44 rex.R 15: 89 .byte 0x89 [ 19.235091] RSP: 002b:00007fffff59c5b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 19.235143] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007fb9f40d685a [ 19.235196] RDX: 0000000000000040 RSI: 0000000000b1f340 RDI: 0000000000000005 [ 19.235243] RBP: 00007fffff59c610 R08: 00000000004185e0 R09: 0000000000000010 [ 19.235290] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054 Finger prints: __skb_to_sgvec:skb_to_sgvec:esp_output_tail:esp_xmit