Bug 436111
| Summary: | kernel: PCI-DMA: Out of SW-IOMMU space for 16384 bytes at device 0000:00:1f.2 | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Michal Nowak <mnowak> |
| Component: | kernel | Assignee: | Jeff Garzik <jgarzik> |
| Status: | CLOSED DUPLICATE | QA Contact: | Martin Jenner <mjenner> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 5.2 | CC: | dzickus, ohudlick, peterm |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2008-03-10 13:48:05 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Description of problem: I am facing this not so nice message in dmesg Mar 5 15:00:54 dhcp-lab-198 kernel: PCI-DMA: Out of SW-IOMMU space for 16384 bytes at device 0000:00:1f.2 Mar 5 15:00:54 dhcp-lab-198 kernel: ata1.00: exception Emask 0x0 SAct 0x800000 SErr 0x0 action 0x0 Mar 5 15:00:54 dhcp-lab-198 kernel: ata1.00: cmd 61/00:b8:19:d7:50/04:00:11:00:00/40 tag 23 ncq 524288 out Mar 5 15:00:54 dhcp-lab-198 kernel: res 40/00:b4:e9:c0:50/00:00:11:00:00/40 Emask 0x40 (internal error) Mar 5 15:00:54 dhcp-lab-198 kernel: ata1.00: status: { DRDY } Mar 5 15:00:54 dhcp-lab-198 kernel: ata1.00: status: { DRDY } Mar 5 15:00:54 dhcp-lab-198 kernel: ata1.00: configured for UDMA/133 Mar 5 15:00:54 dhcp-lab-198 kernel: ata1: EH complete Mar 5 15:00:54 dhcp-lab-198 kernel: SCSI device sda: 488281250 512-byte hdwr sectors (250000 MB) Mar 5 15:00:54 dhcp-lab-198 kernel: sda: Write Protect is off Mar 5 15:00:54 dhcp-lab-198 kernel: SCSI device sda: drive cache: write back while running `yum upgrade` and might be others operations. I am not sure whether is it problem or not but might looks kinda scary to someone. Version-Release number of selected component (if applicable): Linux dhcp-lab-198.englab.brq.redhat.com 2.6.18-83.el5xen #1 SMP Thu Feb 21 12:44:14 EST 2008 i686 i686 i386 GNU/Linux How reproducible: when yum is running Steps to Reproduce: 1. yum upgrade 2. see dmesg Actual results: weird msg in dmesg, might be some a bug in recent kernel, because it appeared first in -83 kernel version. Expected results: not sure... no msg when it's normal operation, bug fixed when it's kernel side issue Additional info: the HDD is SATA_WDC_WD2500JS_75_WD_WCANKH571533 (^ HAL info) machine is DELL Precision 490