On Tue, Oct 30, 2018 at 10:50 AM Eric Dumazet <eric.duma...@gmail.com> wrote: > > > > On 10/30/2018 10:32 AM, Cong Wang wrote: > > > Unlike Pawel's case, we don't use vlan at all, maybe this is why we see > > it much less frequently than Pawel. > > > > Also, it is probably not specific to mlx5, as there is another report which > > is probably a non-mlx5 driver. > > Not sure if you provided a stack trace ?
I said it is the same with Pawel's. Here it is anyway: [ 3731.075989] eth0: hw csum failure [ 3731.079316] CPU: 15 PID: 0 Comm: swapper/15 Not tainted 4.14.74.x86_64 #1 [ 3731.086703] Hardware name: Wiwynn F4WW/Y 300-0284/F4WW MAIN BOARD, BIOS F4WWP02 10/19/2018 [ 3731.094961] Call Trace: [ 3731.097408] <IRQ> [ 3731.099432] dump_stack+0x46/0x59 [ 3731.102751] __skb_checksum_complete+0xb8/0xd0 [ 3731.107194] tcp_v4_rcv+0x116/0xa30 [ 3731.110688] ip_local_deliver_finish+0x5d/0x1f0 [ 3731.115218] ip_local_deliver+0x6b/0xe0 [ 3731.119056] ? ip_rcv_finish+0x400/0x400 [ 3731.122973] ip_rcv+0x287/0x360 [ 3731.126112] ? inet_del_offload+0x40/0x40 [ 3731.130124] __netif_receive_skb_core+0x404/0xc10 [ 3731.134831] ? netif_receive_skb_internal+0x34/0xd0 [ 3731.139709] netif_receive_skb_internal+0x34/0xd0 [ 3731.144415] napi_gro_receive+0xb8/0xe0 [ 3731.148271] mlx5e_handle_rx_cqe_mpwrq+0x4e3/0x7f0 [mlx5_core] [ 3731.154099] ? enqueue_entity+0x103/0x7f0 [ 3731.158114] mlx5e_poll_rx_cq+0xba/0x850 [mlx5_core] [ 3731.163080] mlx5e_napi_poll+0x91/0x290 [mlx5_core] [ 3731.167955] net_rx_action+0x14a/0x3e0 [ 3731.171707] ? credit_entropy_bits+0x23d/0x260 [ 3731.176153] __do_softirq+0xe2/0x2c3 [ 3731.179734] irq_exit+0xbc/0xd0 [ 3731.182878] do_IRQ+0x89/0xd0 [ 3731.185851] common_interrupt+0x7a/0x7a [ 3731.189690] </IRQ> [ 3731.191799] RIP: 0010:cpuidle_enter_state+0xa6/0x2d0 [ 3731.196761] RSP: 0018:ffffbb950c6f7eb0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff60 [ 3731.204328] RAX: ffff9fe25fbe14c0 RBX: 00000364b57553af RCX: 000000000000001f [ 3731.211459] RDX: 20c49ba5e353f7cf RSI: ffff68294248f469 RDI: 0000000000000000 [ 3731.218583] RBP: ffffdb7d003c3300 R08: 000000000000c3be R09: 0000000000008612 [ 3731.225709] R10: ffffbb950c6f7e98 R11: 000000000000c3be R12: 0000000000000003 [ 3731.232841] R13: ffffffff912c9d18 R14: 0000000000000000 R15: 00000364b396207a [ 3731.239968] do_idle+0x166/0x1a0 [ 3731.243199] cpu_startup_entry+0x6f/0x80 [ 3731.247128] start_secondary+0x19c/0x1f0 [ 3731.251052] secondary_startup_64+0xa5/0xb0 > > Have you tried IPv6 frags maybe ? > We have no IPv6 traffic. I asked people to try to generate IPv4 fragment traffic to see if it would be more reproducible, no progress yet.
