On Tue, Mar 19, 2024 at 10:00:08AM +0100, Igor Raits wrote: > Hello, > > We have started to observe kernel crashes on 6.7.y kernels (atm we > have hit the issue 5 times on 6.7.5 and 6.7.10). On 6.6.9 where we > have nodes of cluster it looks stable. Please see stacktrace below. If > you need more information please let me know. > > We do not have a consistent reproducer but when we put some bigger > network load on a VM, the hypervisor's kernel crashes. > > Help is much appreciated! We are happy to test any patches. CCing Michael Tsirkin and Jason Wang for vhost_net. > > [62254.167584] stack segment: 0000 [#1] PREEMPT SMP NOPTI > [62254.173450] CPU: 63 PID: 11939 Comm: vhost-11890 Tainted: G > E 6.7.10-1.gdc.el9.x86_64 #1 Are there any patches in this kernel? Can you post the .config for this kernel? > [62254.183743] Hardware name: Dell Inc. PowerEdge R7525/0H3K7P, BIOS > 2.14.1 12/17/2023 > [62254.192083] RIP: 0010:skb_release_data+0xb8/0x1e0 > [62254.197357] Code: 48 83 c3 01 39 d8 7e 54 48 89 d8 48 c1 e0 04 41 > 80 7d 7e 00 49 8b 6c 04 30 79 0f 44 89 f6 48 89 ef e8 4c e4 ff ff 84 > c0 75 d0 <48> 8b 45 08 a8 01 0f 85 09 01 00 00 e9 d9 00 00 00 0f 1f 44 > 00 00 > [62254.217013] RSP: 0018:ffffa975a0247ba8 EFLAGS: 00010206 > [62254.222692] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000785 > [62254.230263] RDX: 0000000000000016 RSI: 0000000000000002 RDI: ffff989862b32b00 > [62254.237878] RBP: 4f2b318c69a8b0f9 R08: 000000000001fe4d R09: 000000000000003a > [62254.245417] R10: 0000000000000000 R11: 0000000000001736 R12: ffff9880b819aec0 > [62254.252963] R13: ffff989862b32b00 R14: 0000000000000000 R15: 0000000000000002 > [62254.260591] FS: 00007f6cf388bf80(0000) GS:ffff98b85fbc0000(0000) > knlGS:0000000000000000 > [62254.269061] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [62254.275170] CR2: 000000c002236020 CR3: 000000387d37a002 CR4: 0000000000770ef0 > [62254.282733] PKRU: 55555554 > [62254.285911] Call Trace: > [62254.288884] <TASK> > [62254.291549] ? die+0x33/0x90 > [62254.294769] ? do_trap+0xe0/0x110 > [62254.298405] ? do_error_trap+0x65/0x80 > [62254.302471] ? exc_stack_segment+0x35/0x50 > [62254.306884] ? asm_exc_stack_segment+0x22/0x30 > [62254.311637] ? skb_release_data+0xb8/0x1e0 > [62254.316047] kfree_skb_list_reason+0x6d/0x210 > [62254.320697] ? free_unref_page_commit+0x80/0x2f0 > [62254.325700] ? free_unref_page+0xe9/0x130 > [62254.330013] skb_release_data+0xfc/0x1e0 > [62254.334261] consume_skb+0x45/0xd0 > [62254.338077] tun_do_read+0x68/0x1f0 [tun] > [62254.342414] tun_recvmsg+0x7e/0x160 [tun] > [62254.346696] handle_rx+0x3ab/0x750 [vhost_net] > [62254.351488] vhost_worker+0x42/0x70 [vhost] > [62254.355934] vhost_task_fn+0x4b/0xb0 > [62254.359758] ? finish_task_switch.isra.0+0x8f/0x2a0 > [62254.364882] ? __pfx_vhost_task_fn+0x10/0x10 > [62254.369390] ? __pfx_vhost_task_fn+0x10/0x10 > [62254.373888] ret_from_fork+0x2d/0x50 > [62254.377687] ? __pfx_vhost_task_fn+0x10/0x10 > [62254.382169] ret_from_fork_asm+0x1b/0x30 > [62254.386310] </TASK> > [62254.388705] Modules linked in: nf_tables(E) nf_conntrack_netlink(E) > vhost_net(E) vhost(E) vhost_iotlb(E) tap(E) tun(E) mptcp_diag(E) > xsk_diag(E) udp_diag(E) raw_diag(E) unix_diag(E) af_packet_diag(E) > netlink_diag(E) tcp_diag(E) inet_diag(E) rpcsec_gss_krb5(E) > auth_rpcgss(E) nfsv4(E) dns_resolver(E) nfs(E) lockd(E) grace(E) > fscache(E) netfs(E) netconsole(E) ib_core(E) scsi_transport_iscsi(E) > sch_ingress(E) target_core_user(E) uio(E) target_core_pscsi(E) > target_core_file(E) target_core_iblock(E) iscsi_target_mod(E) > target_core_mod(E) 8021q(E) garp(E) mrp(E) bonding(E) tls(E) > nfnetlink_cttimeout(E) nfnetlink(E) openvswitch(E) nf_conncount(E) > nf_nat(E) binfmt_misc(E) dell_rbu(E) sunrpc(E) vfat(E) fat(E) > dm_service_time(E) dm_multipath(E) btrfs(E) xor(E) zstd_compress(E) > raid6_pq(E) ipmi_ssif(E) intel_rapl_msr(E) intel_rapl_common(E) > amd64_edac(E) edac_mce_amd(E) kvm_amd(E) kvm(E) irqbypass(E) > dell_smbios(E) acpi_ipmi(E) dcdbas(E) dell_wmi_descriptor(E) > wmi_bmof(E) rapl(E) ipmi_si(E) acp > Mar 19 09:40:16 10.12.17.70 i_cpufreq(E) ipmi_devintf(E) > [62254.388751] mgag200(E) i2c_algo_bit(E) ptdma(E) wmi(E) > i2c_piix4(E) k10temp(E) ipmi_msghandler(E) acpi_power_meter(E) fuse(E) > zram(E) ext4(E) mbcache(E) jbd2(E) dm_crypt(E) sd_mod(E) t10_pi(E) > sg(E) ice(E) crct10dif_pclmul(E) crc32_pclmul(E) polyval_clmulni(E) > polyval_generic(E) ahci(E) libahci(E) ghash_clmulni_intel(E) > sha512_ssse3(E) libata(E) megaraid_sas(E) ccp(E) gnss(E) sp5100_tco(E) > dm_mirror(E) dm_region_hash(E) dm_log(E) dm_mod(E) nf_conntrack(E) > libcrc32c(E) crc32c_intel(E) nf_defrag_ipv6(E) nf_defrag_ipv4(E) > br_netfilter(E) bridge(E) stp(E) llc(E) > [62254.480070] Unloaded tainted modules: fjes(E):2 padlock_aes(E):3 > [62254.537711] ---[ end trace 0000000000000000 ]--- > > Thanks in advance! >
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