[dma-debug.c - DMA-API] exceeded overlapping â & sym53c8xx â tries to free DMA â

[poma]

Ahoy!

Perhaps this is already solved, but I made ââthe effort to test & record
all of this, therefore here you are. :)

https://bugzilla.redhat.com/show_bug.cgi?id=1062833

0.
VirtIO disk - virtio-pc OK:
- lspci-knn-3.14.0-0.rc2.git2.1.fc21.x86_64-virtio-pc-virtio-disk-OK
https://bugzilla.redhat.com/attachment.cgi?id=863135
- dmesg-3.14.0-0.rc2.git2.1.fc21.x86_64-virtio-pc-virtio-disk-OK
https://bugzilla.redhat.com/attachment.cgi?id=863136


1.
IDE disk - ata_piix:
- lspci-knn-3.14.0-0.rc2.git2.1.fc21.x86_64-ata_piix-ide-disk
https://bugzilla.redhat.com/attachment.cgi?id=863137
- dmesg-3.14.0-0.rc2.git2.1.fc21.x86_64-ata_piix-ide-disk
"WARNING: CPU: 0 PID: 1328 at lib/dma-debug.c:491
add_dma_entry+0x127/0x130()"
"DMA-API: exceeded 7 overlapping mappings of pfn 2137"
https://bugzilla.redhat.com/attachment.cgi?id=863138


2.
SATA disk - ahci:
- lspci-knn-3.14.0-0.rc2.git2.1.fc21.x86_64-ahci-sata-disk
https://bugzilla.redhat.com/attachment.cgi?id=863139
- dmesg-3.14.0-0.rc2.git2.1.fc21.x86_64-ahci-sata-disk
"WARNING: CPU: 0 PID: 1543 at lib/dma-debug.c:491
add_dma_entry+0x127/0x130()"
"DMA-API: exceeded 7 overlapping mappings of pfn 2137"
https://bugzilla.redhat.com/attachment.cgi?id=863140


3.
SCSI disk - sym53c8xx:
- lspci-knn-3.14.0-0.rc2.git2.1.fc21.x86_64-sym53c8xx-scsi-disk
https://bugzilla.redhat.com/attachment.cgi?id=863151
- dmesg-3.14.0-0.rc2.git2.1.fc21.x86_64-sym53c8xx-scsi-disk
"WARNING: CPU: 1 PID: 1514 at lib/dma-debug.c:491
add_dma_entry+0x127/0x130()"
"DMA-API: exceeded 7 overlapping mappings of pfn 2137"
~~
"WARNING: CPU: 1 PID: 1514 at lib/dma-debug.c:1041
check_unmap+0x8b7/0x9b0()"
"sym53c8xx 0000:00:07.0: DMA-API: device driver tries to free DMA memory
it has not allocated [device address=0x0000000002137000] [size=512 bytes]"
https://bugzilla.redhat.com/attachment.cgi?id=863152


4.
VirtIO SCSI disk - 'virtio-scsi' & sym53c8xx:
- lspci-knn-3.14.0-0.rc2.git2.1.fc21.x86_64-sym53c8xx-virtio-scsi-disk
https://bugzilla.redhat.com/attachment.cgi?id=863153
- dmesg-3.14.0-0.rc2.git2.1.fc21.x86_64-sym53c8xx-virtio-scsi-disk
"WARNING: CPU: 0 PID: 1530 at lib/dma-debug.c:491
add_dma_entry+0x127/0x130()"
"DMA-API: exceeded 7 overlapping mappings of pfn 2137"
~~
"WARNING: CPU: 0 PID: 1530 at lib/dma-debug.c:1041
check_unmap+0x8b7/0x9b0()"
"sym53c8xx 0000:00:07.0: DMA-API: device driver tries to free DMA memory
it has not allocated [device address=0x0000000002137000] [size=512 bytes]"
https://bugzilla.redhat.com/attachment.cgi?id=863154


5.
USB disk - usb-storage:
- lspci-knn-3.14.0-0.rc2.git2.1.fc21.x86_64-usb-storage-usb-disk
https://bugzilla.redhat.com/attachment.cgi?id=863156
- lsusb-3.14.0-0.rc2.git2.1.fc21.x86_64-usb-storage-usb-disk
https://bugzilla.redhat.com/attachment.cgi?id=863157
- lsusb-t-3.14.0-0.rc2.git2.1.fc21.x86_64-usb-storage-usb-disk
https://bugzilla.redhat.com/attachment.cgi?id=863158
- dmesg-3.14.0-0.rc2.git2.1.fc21.x86_64-usb-storage-usb-disk
"WARNING: CPU: 0 PID: 415 at lib/dma-debug.c:491
add_dma_entry+0x127/0x130()"
"DMA-API: exceeded 7 overlapping mappings of pfn 2137"
https://bugzilla.redhat.com/attachment.cgi?id=863159


Tested with:
http://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/x86_64/os/images/
boot.iso                                         13-Feb-2014 15:45  362M

checkisomd5:
boot.iso:   434371185df324e28ff5652891ae4ea8
Fragment sums: 5a3e92cebf4721fcfad3e317bff6ac4ec9df98fedd9f53c3c3f2ed55c337
Fragment count: 20
Press [Esc] to abort check.
Checking: 100.0%

The media check is complete, the result is: PASS.

It is OK to use this media.

sha256sum:
2b6aac6e9b55c5f49f251340a4c28e091998f9fe3a6bdba7542f0f9b2d69ba8c  boot.iso


poma


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