====================================== | [ 125.539892][ T8] br0: port 1(swp1) entered disabled state | [ 125.954371][ C2] ------------[ cut here ]------------ | [ 125.954754][ C2] kernel BUG at net/core/skbuff.c:3505! | [ 125.954952][ C2] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 125.955383][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 125.955729][ C2] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 125.955895][ C2] Code: 44 89 14 24 ff d0 0f 1f 00 4c 8b 44 24 08 44 8b 14 24 41 89 c1 eb a5 89 e8 e9 2d fe ff ff 41 ff d5 0f 1f 00 e9 1f fa ff ff 90 <0f> 0b 48 8b 7c 24 10 89 54 24 48 48 89 44 24 40 e8 e7 53 8d fe 8b All code ======== 0: 44 89 14 24 mov %r10d,(%rsp) 4: ff d0 call *%rax 6: 0f 1f 00 nopl (%rax) 9: 4c 8b 44 24 08 mov 0x8(%rsp),%r8 e: 44 8b 14 24 mov (%rsp),%r10d 12: 41 89 c1 mov %eax,%r9d 15: eb a5 jmp 0xffffffffffffffbc 17: 89 e8 mov %ebp,%eax 19: e9 2d fe ff ff jmp 0xfffffffffffffe4b 1e: 41 ff d5 call *%r13 21: 0f 1f 00 nopl (%rax) 24: e9 1f fa ff ff jmp 0xfffffffffffffa48 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi 31: 89 54 24 48 mov %edx,0x48(%rsp) 35: 48 89 44 24 40 mov %rax,0x40(%rsp) 3a: e8 e7 53 8d fe call 0xfffffffffe8d5426 3f: 8b .byte 0x8b Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi 7: 89 54 24 48 mov %edx,0x48(%rsp) b: 48 89 44 24 40 mov %rax,0x40(%rsp) 10: e8 e7 53 8d fe call 0xfffffffffe8d53fc 15: 8b .byte 0x8b [ 125.956442][ C2] RSP: 0018:ffffc90000220210 EFLAGS: 00010202 [ 125.956638][ C2] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff11000b70859 [ 125.956869][ C2] RDX: 0000000000000040 RSI: 0000000000000000 RDI: ffff888005b842c8 [ 125.957098][ C2] RBP: 0000000000000000 R08: ffffc900002202d0 R09: fffffbfff75aa5a2 [ 125.957331][ C2] R10: ffffffffbad52d17 R11: ffffffffb86fe11f R12: 0000000000000000 [ 125.957561][ C2] R13: 0000000000000000 R14: ffffc900002202d0 R15: ffff88800861d5c8 [ 125.957790][ C2] FS: 00007f688b0c7300(0000) GS:ffff888036100000(0000) knlGS:0000000000000000 [ 125.958058][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 125.958251][ C2] CR2: 00007ffebd852900 CR3: 0000000003002006 CR4: 0000000000770ef0 [ 125.958483][ C2] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 125.958712][ C2] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 125.958940][ C2] PKRU: 55555554 [ 125.959056][ C2] Call Trace: [ 125.959174][ C2] [ 125.959254][ C2] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) [ 125.959392][ C2] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) [ 125.959512][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 125.959667][ C2] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) [ 125.959820][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 125.959973][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 125.960126][ C2] ? handle_invalid_op (arch/x86/kernel/traps.c:213) [ 125.960280][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 125.960433][ C2] ? exc_invalid_op (arch/x86/kernel/traps.c:265) [ 125.960588][ C2] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) [ 125.960743][ C2] ? napi_complete_done (./include/linux/list.h:37 ./include/net/gro.h:438 ./include/net/gro.h:433 net/core/dev.c:6184) [ 125.960901][ C2] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) [ 125.961057][ C2] __skb_checksum_complete (net/core/skbuff.c:3643) [ 125.961212][ C2] ? __pfx___skb_checksum_complete (net/core/skbuff.c:3637) [ 125.961401][ C2] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) [ 125.961553][ C2] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) [ 125.961706][ C2] icmp_rcv (./include/linux/skbuff.h:4567 net/ipv4/icmp.c:1213) [ 125.961824][ C2] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 5)) [ 125.961980][ C2] ip_local_deliver_finish (./include/linux/rcupdate.h:779 net/ipv4/ip_input.c:234) [ 125.962134][ C2] ? is_bpf_text_address (kernel/bpf/core.c:767) [ 125.962289][ C2] ip_local_deliver (./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:254) [ 125.962442][ C2] ? __pfx_ip_local_deliver (net/ipv4/ip_input.c:243) [ 125.962596][ C2] ? __netif_receive_skb_core.constprop.0 (net/core/dev.c:5498) [ 125.962787][ C2] ? ip_rcv_finish_core.constprop.0 (net/ipv4/ip_input.c:367) [ 125.962980][ C2] ip_rcv (./include/net/dst.h:460 net/ipv4/ip_input.c:449 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv4/ip_input.c:569) [ 125.963095][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 125.963253][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 125.963407][ C2] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5797 (discriminator 16)) [ 125.963598][ C2] ? __pfx_ip_rcv (net/ipv4/ip_input.c:562) [ 125.963749][ C2] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) [ 125.963941][ C2] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5603) [ 125.964132][ C2] ? br_vlan_lookup (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/rhashtable.h:673 net/bridge/br_vlan.c:34) [ 125.964287][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 125.964438][ C2] ? netif_receive_skb_internal (./include/linux/rcupdate.h:298 (discriminator 16) ./include/linux/rcupdate.h:750 (discriminator 16) net/core/dev.c:5797 (discriminator 16)) [ 125.964633][ C2] netif_receive_skb_internal (net/core/dev.c:5810) [ 125.964789][ C2] ? __pfx_netif_receive_skb_internal (net/core/dev.c:5789) [ 125.964981][ C2] ? br_handle_vlan (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/bridge/br_private.h:754 net/bridge/br_vlan.c:505) [ 125.965138][ C2] netif_receive_skb (net/core/dev.c:5869) [ 125.965291][ C2] br_handle_frame_finish (net/bridge/br_input.c:216) [ 125.965449][ C2] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75) [ 125.965638][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4292 kernel/locking/lockdep.c:4359) [ 125.965836][ C2] ? br_handle_ingress_vlan_tunnel (./include/net/dst.h:263 ./include/net/dst.h:275 net/bridge/br_vlan_tunnel.c:180) [ 125.966025][ C2] ? __pfx_br_handle_ingress_vlan_tunnel (net/bridge/br_vlan_tunnel.c:164) [ 125.966215][ C2] br_handle_frame (net/bridge/br_input.c:417) [ 125.966369][ C2] ? __pfx_br_handle_frame (net/bridge/br_input.c:321) [ 125.966522][ C2] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5504) [ 125.966712][ C2] ? udp_queue_rcv_one_skb (./include/linux/skbuff.h:4449 ./include/net/udp.h:120 net/ipv4/udp.c:2106) [ 125.966866][ C2] ? udp_unicast_rcv_skb (net/ipv4/udp.c:2353 (discriminator 3)) [ 125.967022][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 125.967176][ C2] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5397) [ 125.967368][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 125.967527][ C2] ? lock_sync (kernel/locking/lockdep.c:116 kernel/locking/lockdep.c:5794) [ 125.967681][ C2] __netif_receive_skb_list_core (net/core/dev.c:5687) [ 125.967872][ C2] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) [ 125.968025][ C2] ? netif_receive_skb_list_internal (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5829) [ 125.968218][ C2] ? __pfx___netif_receive_skb_list_core (net/core/dev.c:5663) [ 125.968410][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 125.968563][ C2] ? netif_receive_skb_list_internal (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5829) [ 125.968753][ C2] netif_receive_skb_list_internal (net/core/dev.c:5755 net/core/dev.c:5844) [ 125.968942][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 125.969097][ C2] ? __pfx_netif_receive_skb_list_internal (net/core/dev.c:5816) [ 125.969285][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 125.969436][ C2] ? dev_gro_receive (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/core/gro.c:500) [ 125.969592][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 125.969748][ C2] napi_complete_done (./include/linux/list.h:37 ./include/net/gro.h:438 ./include/net/gro.h:433 net/core/dev.c:6184) [ 125.969901][ C2] ? __pfx_napi_complete_done (net/core/dev.c:6151) [ 125.970053][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 125.970206][ C2] gro_cell_poll (net/core/gro_cells.c:67) [ 125.970361][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 125.970514][ C2] __napi_poll.constprop.0 (net/core/dev.c:6703) [ 125.970667][ C2] net_rx_action (net/core/dev.c:6772 net/core/dev.c:6886) [ 125.970825][ C2] ? __pfx_net_rx_action (net/core/dev.c:6850) [ 125.970978][ C2] ? usage_skip (kernel/locking/lockdep.c:2295 kernel/locking/lockdep.c:2263) [ 125.971134][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 125.971287][ C2] ? hrtimer_interrupt (kernel/time/hrtimer.c:1828) [ 125.971440][ C2] __do_softirq (kernel/softirq.c:553) [ 125.971596][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 125.971848][ C2] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) [ 125.971966][ C2] [ 125.972044][ C2] [ 125.972124][ C2] __local_bh_enable_ip (kernel/softirq.c:381) [ 125.972278][ C2] ? __dev_queue_xmit (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:818 net/core/dev.c:4399) [ 125.972431][ C2] __dev_queue_xmit (net/core/dev.c:4400) [ 125.972682][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) [ 125.972797][ C2] ? mark_held_locks (kernel/locking/lockdep.c:4274) [ 125.972949][ C2] ? eth_header (net/ethernet/eth.c:100) [ 125.973101][ C2] ? __pfx___dev_queue_xmit (net/core/dev.c:4281) [ 125.973352][ C2] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) [ 125.973507][ C2] ? __pfx_get_random_u32 (drivers/char/random.c:532) [ 125.973661][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 125.973812][ C2] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 125.974061][ C2] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) [ 125.974213][ C2] ? __ip_finish_output (./include/linux/skbuff.h:1624 ./include/linux/skbuff.h:4942 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) [ 125.974366][ C2] ip_output (./include/linux/netfilter.h:303 net/ipv4/ip_output.c:433) [ 125.974481][ C2] ? __ip_local_out (net/ipv4/ip_output.c:96 net/ipv4/ip_output.c:107) [ 125.974633][ C2] ? __pfx_ip_output (net/ipv4/ip_output.c:427) [ 125.974897][ C2] ? __ip_make_skb (net/ipv4/ip_output.c:1379 net/ipv4/ip_output.c:1487) [ 125.975053][ C2] ? __pfx_raw_getfrag (net/ipv4/raw.c:446) [ 125.975206][ C2] ? ip_append_data (net/ipv4/ip_output.c:1368 net/ipv4/ip_output.c:1347) [ 125.975360][ C2] 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) [ 125.975513][ C2] raw_sendmsg (net/ipv4/raw.c:648) [ 125.975664][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) [ 125.975817][ C2] ? __pfx_raw_sendmsg (net/ipv4/raw.c:476) [ 125.975968][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5137) [ 125.976219][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) [ 125.976375][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 125.976525][ C2] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 125.976677][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 125.976828][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [ 125.977079][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) [ 125.977230][ C2] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 125.977380][ C2] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) [ 125.977533][ C2] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 125.977784][ C2] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) [ 125.977938][ C2] ? __pfx___sys_sendto (net/socket.c:2161) [ 125.978090][ C2] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1357) [ 125.978242][ C2] ? reacquire_held_locks (kernel/locking/lockdep.c:5279) [ 125.978492][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) [ 125.978644][ C2] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) [ 125.978796][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 125.978947][ C2] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) [ 125.979195][ C2] ? __pfx___up_read (kernel/locking/rwsem.c:1339) [ 125.979350][ C2] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) [ 125.979503][ C2] __x64_sys_sendto (net/socket.c:2199) [ 125.979655][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 125.979941][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 125.980096][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 125.980286][ C2] RIP: 0033:0x7f688b39d85a [ 125.980444][ C2] 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 [ 125.981197][ C2] RSP: 002b:00007ffebd853318 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 125.981429][ C2] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007f688b39d85a [ 125.981756][ C2] RDX: 0000000000000040 RSI: 000000000217f340 RDI: 0000000000000005 [ 125.981984][ C2] RBP: 00007ffebd853370 R08: 00000000004185e0 R09: 0000000000000010 [ 125.982316][ C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054 Finger prints: __skb_checksum:__skb_checksum_complete:icmp_rcv:ip_protocol_deliver_rcu