https://bugzilla.kernel.org/show_bug.cgi?id=209253 Justin Gatzen (justin.gatzen@xxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |justin.gatzen@xxxxxxxxx --- Comment #4 from Justin Gatzen (justin.gatzen@xxxxxxxxx) --- Seeing the same issue here on 5.9.1 and 5.8.14. I did not notice any trouble on 5.8.2 for about two weeks of usage, but that is just an anecdote. I have not attempted to bisect this because the bug takes quite a while to trigger. Stack trace from a VFIO enabled VM with SRIOV nic, NVME passthrough, GPU passthrough, Windows guest: [83372.203651] ------------[ cut here ]------------ [83372.203659] WARNING: CPU: 16 PID: 0 at fs/eventfd.c:74 eventfd_signal+0x89/0xa0 [83372.203661] Modules linked in: vhost_net vhost tap vhost_iotlb tun vfio_pci vfio_virqfd vfio_iommu_type1 vfio ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_counter uinput nft_meta_bridge nf_tables nfnetlink xpad hid_microsoft ff_memless mlx5_ib ib_uverbs nouveau ib_core edac_mce_amd mlx5_core iwlmvm kvm_amd mac80211 kvm snd_hda_codec_realtek irqbypass sp5100_tco snd_hda_codec_generic pcspkr rapl k10temp wmi_bmof i2c_piix4 mlxfw ledtrig_audio snd_hda_codec_hdmi joydev pci_hyperv_intf snd_hda_intel bridge snd_intel_dspcfg libarc4 snd_hda_codec btusb btrtl iwlwifi snd_hda_core btbcm mxm_wmi stp btintel llc video snd_hwdep bluetooth snd_pcm ttm snd_timer cfg80211 drm_kms_helper veth igb snd ecdh_generic ecc cec i2c_algo_bit soundcore r8169 rfkill dca acpi_cpufreq vfat fat drm essiv authenc dm_crypt xfs crct10dif_pclmul ccp crc32_pclmul crc32c_intel nvme [83372.203687] ghash_clmulni_intel nvme_core wmi pinctrl_amd [83372.203702] CPU: 16 PID: 0 Comm: swapper/16 Not tainted 5.9.1-dirty #49 [83372.203704] Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS MASTER/X570 AORUS MASTER, BIOS F30 09/07/2020 [83372.203707] RIP: 0010:eventfd_signal+0x89/0xa0 [83372.203709] Code: 03 00 00 00 4c 89 f7 e8 b5 3c db ff 65 ff 0d 3e 26 cb 52 4c 89 ee 4c 89 f7 e8 b3 65 7e 00 4c 89 e0 5b 5d 41 5c 41 5d 41 5e c3 <0f> 0b 45 31 e4 5b 5d 4c 89 e0 41 5c 41 5d 41 5e c3 66 0f 1f 44 00 [83372.203712] RSP: 0018:ffffa2cdc0554f28 EFLAGS: 00010002 [83372.203714] RAX: 0000000000000001 RBX: ffff8ceaec0d4880 RCX: 000000000000001f [83372.203716] RDX: ffff8ceaed3b7200 RSI: 0000000000000001 RDI: ffff8ce6eaa58340 [83372.203717] RBP: ffff8ceaed3b7200 R08: 00004bd39a951b00 R09: 0000000000000000 [83372.203719] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000000000d9 [83372.203720] R13: 0000000000000000 R14: ffffa2cdc0554fa4 R15: 0000000000000000 [83372.203722] FS: 0000000000000000(0000) GS:ffff8cf5bee00000(0000) knlGS:0000000000000000 [83372.203724] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [83372.203726] CR2: 00005562c8109c68 CR3: 00000001694fc000 CR4: 0000000000350ee0 [83372.203727] Call Trace: [83372.203729] <IRQ> [83372.203734] vfio_msihandler+0x12/0x20 [vfio_pci] [83372.203738] __handle_irq_event_percpu+0x42/0x180 [83372.203740] handle_irq_event_percpu+0x21/0x60 [83372.203742] handle_irq_event+0x36/0x53 [83372.203744] handle_edge_irq+0x83/0x190 [83372.203747] asm_call_irq_on_stack+0x12/0x20 [83372.203749] </IRQ> [83372.203751] common_interrupt+0xb5/0x130 [83372.203753] asm_common_interrupt+0x1e/0x40 [83372.203756] RIP: 0010:cpuidle_enter_state+0xdf/0x390 [83372.203758] Code: e8 76 49 7d ff 80 7c 24 0f 00 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 8f 02 00 00 31 ff e8 28 b3 83 ff fb 66 0f 1f 44 00 00 <45> 85 f6 0f 88 20 01 00 00 49 63 d6 4c 2b 24 24 48 8d 04 52 48 8d [83372.203761] RSP: 0018:ffffa2cdc01c7e88 EFLAGS: 00000246 [83372.203762] RAX: ffff8cf5bee2a300 RBX: ffff8cf3b21d9400 RCX: 000000000000001f [83372.203764] RDX: 0000000000000000 RSI: 000000002491bed3 RDI: 0000000000000000 [83372.203765] RBP: ffffffffaeb7f180 R08: 00004bd39a95195c R09: 0000000000001206 [83372.203767] R10: 0000000000004852 R11: ffff8cf5bee29124 R12: 00004bd39a95195c [83372.203768] R13: ffffffffaeb7f268 R14: 0000000000000002 R15: ffff8cf3b21d9400 [83372.203772] ? cpuidle_enter_state+0xba/0x390 [83372.203774] cpuidle_enter+0x29/0x40 [83372.203776] do_idle+0x1b8/0x240 [83372.203778] cpu_startup_entry+0x19/0x20 [83372.203780] start_secondary+0x103/0x130 [83372.203783] secondary_startup_64+0xb6/0xc0 [83372.203785] ---[ end trace a1dd3ff1b3977640 ]--- And from a non-VFIO run of the mill linux guest: [37342.189129] ------------[ cut here ]------------ [37342.189137] WARNING: CPU: 21 PID: 1137 at fs/eventfd.c:74 eventfd_signal+0x89/0xa0 [37342.189139] Modules linked in: vfio_pci vfio_virqfd vfio_iommu_type1 vfio vhost_net vhost tap vhost_iotlb tun nouveau ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 mlx5_ib nft_counter nft_meta_bridge nf_tables ib_uverbs uinput nfnetlink ib_core iwlmvm xpad hid_microsoft ff_memless mac80211 mlx5_core snd_hda_codec_realtek joydev libarc4 snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio iwlwifi edac_mce_amd snd_hda_intel snd_intel_dspcfg snd_hda_codec kvm_amd bridge btusb snd_hda_core btrtl kvm btbcm video btintel snd_hwdep bluetooth ttm cfg80211 snd_pcm drm_kms_helper igb stp llc snd_timer irqbypass veth rapl snd mlxfw pcspkr wmi_bmof mxm_wmi sp5100_tco k10temp i2c_piix4 i2c_algo_bit pci_hyperv_intf ecdh_generic cec r8169 dca soundcore ecc rfkill drm acpi_cpufreq vfat fat essiv authenc dm_crypt xfs nvme nvme_core crct10dif_pclmul ccp crc32_pclmul [37342.189162] crc32c_intel ghash_clmulni_intel wmi pinctrl_amd [37342.189174] CPU: 21 PID: 1137 Comm: vhost-1125 Not tainted 5.9.1-dirty #50 [37342.189175] Hardware name: Gigabyte Technology Co., Ltd. X570 AORUS MASTER/X570 AORUS MASTER, BIOS F30 09/07/2020 [37342.189178] RIP: 0010:eventfd_signal+0x89/0xa0 [37342.189180] Code: 03 00 00 00 4c 89 f7 e8 b5 3c db ff 65 ff 0d 3e 26 cb 79 4c 89 ee 4c 89 f7 e8 b3 65 7e 00 4c 89 e0 5b 5d 41 5c 41 5d 41 5e c3 <0f> 0b 45 31 e4 5b 5d 4c 89 e0 41 5c 41 5d 41 5e c3 66 0f 1f 44 00 [37342.189182] RSP: 0018:ffffadbcc1233d60 EFLAGS: 00010202 [37342.189183] RAX: 0000000000000001 RBX: ffff986bb47746b8 RCX: 00000000c3160001 [37342.189185] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff986948f6c9c0 [37342.189186] RBP: ffff986bb4770000 R08: 0000000000000001 R09: 0000000000000101 [37342.189187] R10: 000000002b30008a R11: 0000000022308000 R12: 0000000000000001 [37342.189189] R13: ffffadbcc1233e18 R14: ffff98630de8f300 R15: ffff986bb47746b8 [37342.189190] FS: 0000000000000000(0000) GS:ffff986bbef40000(0000) knlGS:0000000000000000 [37342.189192] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [37342.189193] CR2: 00007f77c69ee890 CR3: 0000001029214000 CR4: 0000000000350ee0 [37342.189194] Call Trace: [37342.189199] vhost_tx_batch.isra.0+0x7d/0xc0 [vhost_net] [37342.189202] handle_tx_copy+0x15c/0x550 [vhost_net] [37342.189204] handle_tx+0xa5/0xe0 [vhost_net] [37342.189207] vhost_worker+0x8d/0xd0 [vhost] [37342.189209] ? vhost_vring_call_reset+0x40/0x40 [vhost] [37342.189212] kthread+0xfe/0x140 [37342.189214] ? kthread_park+0x90/0x90 [37342.189216] ret_from_fork+0x22/0x30 [37342.189218] ---[ end trace ae48714189db9592 ]--- -- You are receiving this mail because: You are watching the assignee of the bug.
