this happens any time i have set intel_iommu=on even if I have no pci devices passed through and the respective vm off, and pci pass through does work.
It happens consistently about 15-30 minutes after boot, while watching top i see some system processes on the host start to eat up over 100% cpu such as events, watchdog, apache2, the system becomes VERY SLOW for input. I will sometimes see softlockup errors on the console.
If i turn off intel_iommu via grub everything is fine.
Aug 23 00:29:22 proxmox kernel: ------------[ cut here ]------------
Aug 23 00:29:22 proxmox kernel: WARNING: at drivers/pci/intel-iommu.c:2775 intel_unmap_page+0x15f/0x180() (Not tainted)
Aug 23 00:29:22 proxmox kernel: Hardware name: X9DRi-LN4+/X9DR3-LN4+
Aug 23 00:29:22 proxmox kernel: Driver unmaps unmatched page at PFN 0
Aug 23 00:29:22 proxmox kernel: Modules linked in: ext4 jbd2 snd_pcsp snd_pcm i2c_i801 snd_timer i2c_core snd ioatdma sb_edac soundcore tpm_tis edac_core tpm shpchp
tpm_bios snd_page_alloc serio_raw ext3 jbd mbcache ses enclosure isci libsas igb dca ahci scsi_transport_sas [last unloaded: scsi_wait_scan]
Aug 23 00:29:22 proxmox kernel: Pid: 0, comm: swapper veid: 0 Not tainted 2.6.32-14-pve #1
Aug 23 00:29:22 proxmox kernel: Call Trace:
Aug 23 00:29:22 proxmox kernel: <IRQ> [<ffffffff8106c608>] ? warn_slowpath_common+0x88/0xc0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8106c6f6>] ? warn_slowpath_fmt+0x46/0x50
Aug 23 00:29:22 proxmox kernel: [<ffffffff812a6bdb>] ? find_iova+0x5b/0x90
Aug 23 00:29:22 proxmox kernel: [<ffffffff812aae8f>] ? intel_unmap_page+0x15f/0x180
Aug 23 00:29:22 proxmox kernel: [<ffffffffa0031e47>] ? igb_poll+0x137/0x11c0 [igb]
Aug 23 00:29:22 proxmox kernel: [<ffffffff81081374>] ? mod_timer+0x144/0x230
Aug 23 00:29:22 proxmox kernel: [<ffffffff814ff71b>] ? br_multicast_send_query+0xeb/0x100
Aug 23 00:29:22 proxmox kernel: [<ffffffff8111dd86>] ? ctx_sched_in+0x246/0x320
Aug 23 00:29:22 proxmox kernel: [<ffffffff8145f2d3>] ? net_rx_action+0x103/0x2e0
Aug 23 00:29:22 proxmox kernel: [<ffffffff81075363>] ? __do_softirq+0x103/0x260
Aug 23 00:29:22 proxmox kernel: [<ffffffff8100c30c>] ? call_softirq+0x1c/0x30
Aug 23 00:29:22 proxmox kernel: [<ffffffff8100df35>] ? do_softirq+0x65/0xa0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8107518d>] ? irq_exit+0xcd/0xd0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8152dad5>] ? do_IRQ+0x75/0xf0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8100bb13>] ? ret_from_intr+0x0/0x11
Aug 23 00:29:22 proxmox kernel: <EOI> [<ffffffff812d147e>] ? intel_idle+0xde/0x170
Aug 23 00:29:22 proxmox kernel: [<ffffffff812d1461>] ? intel_idle+0xc1/0x170
Aug 23 00:29:22 proxmox kernel: [<ffffffff814270b7>] ? cpuidle_idle_call+0xa7/0x140
Aug 23 00:29:22 proxmox kernel: [<ffffffff81009e63>] ? cpu_idle+0xb3/0x110
Aug 23 00:29:22 proxmox kernel: [<ffffffff8150c915>] ? rest_init+0x85/0x90
Aug 23 00:29:22 proxmox kernel: [<ffffffff81c2df6e>] ? start_kernel+0x412/0x41e
Aug 23 00:29:22 proxmox kernel: [<ffffffff81c2d33a>] ? x86_64_start_reservations+0x125/0x129
Aug 23 00:29:22 proxmox kernel: [<ffffffff81c2d438>] ? x86_64_start_kernel+0xfa/0x109
Aug 23 00:29:22 proxmox kernel: ---[ end trace 5c747b80ffafdf1e ]---
It happens consistently about 15-30 minutes after boot, while watching top i see some system processes on the host start to eat up over 100% cpu such as events, watchdog, apache2, the system becomes VERY SLOW for input. I will sometimes see softlockup errors on the console.
If i turn off intel_iommu via grub everything is fine.
Aug 23 00:29:22 proxmox kernel: ------------[ cut here ]------------
Aug 23 00:29:22 proxmox kernel: WARNING: at drivers/pci/intel-iommu.c:2775 intel_unmap_page+0x15f/0x180() (Not tainted)
Aug 23 00:29:22 proxmox kernel: Hardware name: X9DRi-LN4+/X9DR3-LN4+
Aug 23 00:29:22 proxmox kernel: Driver unmaps unmatched page at PFN 0
Aug 23 00:29:22 proxmox kernel: Modules linked in: ext4 jbd2 snd_pcsp snd_pcm i2c_i801 snd_timer i2c_core snd ioatdma sb_edac soundcore tpm_tis edac_core tpm shpchp
tpm_bios snd_page_alloc serio_raw ext3 jbd mbcache ses enclosure isci libsas igb dca ahci scsi_transport_sas [last unloaded: scsi_wait_scan]
Aug 23 00:29:22 proxmox kernel: Pid: 0, comm: swapper veid: 0 Not tainted 2.6.32-14-pve #1
Aug 23 00:29:22 proxmox kernel: Call Trace:
Aug 23 00:29:22 proxmox kernel: <IRQ> [<ffffffff8106c608>] ? warn_slowpath_common+0x88/0xc0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8106c6f6>] ? warn_slowpath_fmt+0x46/0x50
Aug 23 00:29:22 proxmox kernel: [<ffffffff812a6bdb>] ? find_iova+0x5b/0x90
Aug 23 00:29:22 proxmox kernel: [<ffffffff812aae8f>] ? intel_unmap_page+0x15f/0x180
Aug 23 00:29:22 proxmox kernel: [<ffffffffa0031e47>] ? igb_poll+0x137/0x11c0 [igb]
Aug 23 00:29:22 proxmox kernel: [<ffffffff81081374>] ? mod_timer+0x144/0x230
Aug 23 00:29:22 proxmox kernel: [<ffffffff814ff71b>] ? br_multicast_send_query+0xeb/0x100
Aug 23 00:29:22 proxmox kernel: [<ffffffff8111dd86>] ? ctx_sched_in+0x246/0x320
Aug 23 00:29:22 proxmox kernel: [<ffffffff8145f2d3>] ? net_rx_action+0x103/0x2e0
Aug 23 00:29:22 proxmox kernel: [<ffffffff81075363>] ? __do_softirq+0x103/0x260
Aug 23 00:29:22 proxmox kernel: [<ffffffff8100c30c>] ? call_softirq+0x1c/0x30
Aug 23 00:29:22 proxmox kernel: [<ffffffff8100df35>] ? do_softirq+0x65/0xa0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8107518d>] ? irq_exit+0xcd/0xd0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8152dad5>] ? do_IRQ+0x75/0xf0
Aug 23 00:29:22 proxmox kernel: [<ffffffff8100bb13>] ? ret_from_intr+0x0/0x11
Aug 23 00:29:22 proxmox kernel: <EOI> [<ffffffff812d147e>] ? intel_idle+0xde/0x170
Aug 23 00:29:22 proxmox kernel: [<ffffffff812d1461>] ? intel_idle+0xc1/0x170
Aug 23 00:29:22 proxmox kernel: [<ffffffff814270b7>] ? cpuidle_idle_call+0xa7/0x140
Aug 23 00:29:22 proxmox kernel: [<ffffffff81009e63>] ? cpu_idle+0xb3/0x110
Aug 23 00:29:22 proxmox kernel: [<ffffffff8150c915>] ? rest_init+0x85/0x90
Aug 23 00:29:22 proxmox kernel: [<ffffffff81c2df6e>] ? start_kernel+0x412/0x41e
Aug 23 00:29:22 proxmox kernel: [<ffffffff81c2d33a>] ? x86_64_start_reservations+0x125/0x129
Aug 23 00:29:22 proxmox kernel: [<ffffffff81c2d438>] ? x86_64_start_kernel+0xfa/0x109
Aug 23 00:29:22 proxmox kernel: ---[ end trace 5c747b80ffafdf1e ]---