On Thu, Jul 29, 2021 at 2:52 PM Shoaib Rao <rao.shoaib@xxxxxxxxxx> wrote: > > > On 7/28/21 11:42 PM, Zhu Yanjun wrote: > > On Wed, Jul 28, 2021 at 1:42 AM Jason Gunthorpe <jgg@xxxxxxxx> wrote: > >> On Tue, Jul 27, 2021 at 09:15:45AM -0700, Shoaib Rao wrote: > >>> Hi Jason et al, > >>> > >>> Can I please get an up or down comment on my patch? > >> Bob and Zhu should check it > > In my daily tests, I found that one host 5.12-stable, the other host > > is 5.14.-rc3 + this commit. > > rping can not work. Sometimes crash will occur. > Can you paste the stack? [ 381.068203] rdma_rxe: qp#17 moved to error state [ 421.464485] BUG: unable to handle page fault for address: ffff9e5de298d180 [ 421.464515] #PF: supervisor write access in kernel mode [ 421.464532] #PF: error_code(0x0002) - not-present page [ 421.464549] PGD 100c00067 P4D 100c00067 PUD 100dc1067 PMD 125e78067 PTE 0 [ 421.464572] Oops: 0002 [#1] SMP PTI [ 421.464585] CPU: 25 PID: 0 Comm: swapper/25 Kdump: loaded Tainted: G S W OE 5.13.1-rxe+ #17 [ 421.464613] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0008.031920191559 03/19/2019 [ 421.464642] RIP: 0010:rxe_cq_post+0x98/0x210 [rdma_rxe] [ 421.464667] Code: 8b b3 48 01 00 00 4d 8b 48 08 41 8b 48 28 49 8d b9 80 01 00 00 85 f6 0f 84 78 01 00 00 41 8b 50 34 d3 e2 48 01 fa 48 8b 4d 00 <48> 89 0a 48 8b 4d 08 48 89 4a 08 48 8b 4d 10 48 89 4a 10 48 8b 4d [ 421.464718] RSP: 0018:ffff9e5dc6ce0918 EFLAGS: 00010082 [ 421.464735] RAX: 0000000000000246 RBX: ffff8b200cabd800 RCX: 0000000000000000 [ 421.464756] RDX: ffff9e5de298d180 RSI: 0000000000000001 RDI: ffff9e5dc698b180 [ 421.464777] RBP: ffff9e5dc6ce09c0 R08: ffff8b2014d85a80 R09: ffff9e5dc698b000 [ 421.464797] R10: ffffffff8bc90940 R11: 0000000000000001 R12: 0000000000000000 [ 421.464817] R13: ffff8b200cabd940 R14: ffff8b206e014008 R15: 000000000000001a [ 421.464838] FS: 0000000000000000(0000) GS:ffff8b1fd1040000(0000) knlGS:0000000000000000 [ 421.464861] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 421.464879] CR2: ffff9e5de298d180 CR3: 0000000c4df4e006 CR4: 00000000007706e0 [ 421.464899] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 421.464920] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 421.464941] PKRU: 55555554 [ 421.464950] Call Trace: [ 421.464961] <IRQ> [ 421.464971] rxe_responder+0x621/0x2480 [rdma_rxe] [ 421.464993] ? __fib_validate_source+0x2e9/0x450 [ 421.465013] rxe_do_task+0x89/0x100 [rdma_rxe] [ 421.465033] rxe_rcv+0x2eb/0x900 [rdma_rxe] [ 421.465050] ? __udp4_lib_lookup+0x2c8/0x440 [ 421.465065] rxe_udp_encap_recv+0x68/0xc0 [rdma_rxe] [ 421.465085] ? rxe_enable_task+0x10/0x10 [rdma_rxe] [ 421.465104] udp_queue_rcv_one_skb+0x1df/0x4e0 [ 421.465120] udp_unicast_rcv_skb.isra.67+0x74/0x90 [ 421.465135] __udp4_lib_rcv+0x555/0xb90 [ 421.465150] ? nf_ct_deliver_cached_events+0xc1/0x120 [nf_conntrack] [ 421.465181] ip_protocol_deliver_rcu+0xe8/0x1b0 [ 421.465199] ip_local_deliver_finish+0x44/0x50 [ 421.465215] ip_local_deliver+0xf1/0x100 [ 421.465229] ? coalesce_fill_reply+0x2c1/0x480 [ 421.465249] ? ip_protocol_deliver_rcu+0x1b0/0x1b0 [ 421.465265] ip_sublist_rcv_finish+0x75/0x80 [ 421.465281] ip_sublist_rcv+0x196/0x220 [ 421.465296] ? ip_local_deliver+0x100/0x100 [ 421.465312] ip_list_rcv+0x137/0x160 [ 421.465325] __netif_receive_skb_list_core+0x29b/0x2c0 [ 421.465344] netif_receive_skb_list_internal+0x1c3/0x2f0 [ 421.465361] gro_normal_list.part.158+0x19/0x40 [ 421.465376] napi_complete_done+0x67/0x160 [ 421.465391] i40e_napi_poll+0x53b/0x840 [i40e] [ 421.465426] __napi_poll+0x2b/0x120 [ 421.466123] net_rx_action+0x236/0x300 [ 421.466783] __do_softirq+0xc9/0x285 [ 421.467440] irq_exit_rcu+0xba/0xd0 [ 421.468091] common_interrupt+0x7f/0xa0 [ 421.468737] </IRQ> [ 421.469366] asm_common_interrupt+0x1e/0x40 [ 421.469990] RIP: 0010:cpuidle_enter_state+0xd6/0x350 [ 421.470608] Code: 49 89 c4 0f 1f 44 00 00 31 ff e8 45 49 99 ff 45 84 ff 74 12 9c 58 f6 c4 02 0f 85 32 02 00 00 31 ff e8 ae c8 9f ff fb 45 85 f6 <0f> 88 e0 00 00 00 49 63 d6 4c 2b 24 24 48 8d 04 52 48 8d 04 82 49 [ 421.471935] RSP: 0018:ffff9e5dc679fe80 EFLAGS: 00000202 [ 421.472599] RAX: ffff8b1fd106bc40 RBX: 0000000000000002 RCX: 000000000000001f [ 421.473266] RDX: 00000062213d764d RSI: 000000003351fed6 RDI: 0000000000000000 [ 421.473920] RBP: ffffbe51c1040000 R08: 0000000000000002 R09: 000000000002b480 [ 421.474558] R10: 0000a82bea904be8 R11: ffff8b1fd106a984 R12: 00000062213d764d [ 421.475172] R13: ffffffff8c6c6d80 R14: 0000000000000002 R15: 0000000000000000 [ 421.475763] cpuidle_enter+0x29/0x40 [ 421.476348] do_idle+0x257/0x2a0 [ 421.476926] cpu_startup_entry+0x19/0x20 [ 421.477497] start_secondary+0x116/0x150 [ 421.478067] secondary_startup_64_no_verify+0xc2/0xcb [ 421.478640] Modules linked in: rdma_rxe(OE) ip6_udp_tunnel udp_tunnel xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 nft_compat nft_counter nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink tun bridge stp llc nls_utf8 isofs cdrom loop rfkill ib_isert iscsi_target_mod ib_srpt ext4 target_core_mod ib_srp scsi_transport_srp mbcache jbd2 rpcrdma sunrpc intel_rapl_msr intel_rapl_common rdma_ucm isst_if_common ib_iser ib_umad rdma_cm ib_ipoib iw_cm skx_edac libiscsi ib_cm nfit libnvdimm scsi_transport_iscsi x86_pkg_temp_thermal intel_powerclamp mlx5_ib coretemp crct10dif_pclmul crc32_pclmul iTCO_wdt iTCO_vendor_support ib_uverbs ghash_clmulni_intel rapl ipmi_ssif intel_cstate ib_core mei_me acpi_ipmi i2c_i801 joydev intel_uncore pcspkr mei i2c_smbus lpc_ich ioatdma ipmi_si intel_pch_thermal dca ipmi_devintf ipmi_msghandler acpi_pad acpi_power_meter ip_tables xfs libcrc32c sd_mod t10_pi sg mlx5_core ast i2c_algo_bit drm_vram_helper [ 421.478702] drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm_ttm_helper ttm mlxfw ahci libahci pci_hyperv_intf ice drm i40e tls crc32c_intel libata psample wmi dm_mirror dm_region_hash dm_log dm_mod fuse [last unloaded: ip6_udp_tunnel] [ 421.483665] CR2: ffff9e5de298d180 > > > > It seems that changing maximum values breaks backward compatibility. > > > > But without this commit, that is, 5.12-stable <-------> 5.14-rc3, > > rping can work well. > > That is strange because all the large values do is initialize the pool > with large values. Nothing else. So unless large values are used there > should be no issues. Is it possible that the issue is with 5.14-rc3. Do > things work between 5.12-stable systems. Anyways, please post the stack > trace and also information on the setup and rping commands used. > > Shoaib > > > > > Zhu Yanjun > >> Jason
