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Tasklist

FS#42756 - [linux-grsec] line6usb (warnings,call trace and read request and write request errors)

Attached to Project: Community Packages
Opened by none (xxterry1xx) - Wednesday, 12 November 2014, 04:40 GMT
Last edited by Daniel Micay (thestinger) - Monday, 01 December 2014, 21:13 GMT
Task Type Bug Report
Category Upstream Bugs
Status Closed
Assigned To Daniel Micay (thestinger)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:

dmesg kernel shows warning at drivers/usb/core/hcd.c (transfer buffer not dma capable) then a call trace, then a receive length failed (error -11),read request failed (error -32) and write request failed (error -11)

Additional info:
linux-grsec 3.17.2.201411091054-1
   kernel (56.9 KiB)
This task depends upon

Closed by  Daniel Micay (thestinger)
Monday, 01 December 2014, 21:13 GMT
Reason for closing:  Fixed
Comment by Daniel Micay (thestinger) - Wednesday, 12 November 2014, 05:43 GMT
I expect that this is caused by GRKERNSEC_KSTACKOVERFLOW. It's likely an upstream bug breaking an assumption made by the exploit mitigation. You could confirm this by using abs to rebuild the package with CONFIG_GRKERNSEC_KSTACKOVERFLOW=n in config.x86_64.

The issue should be reported on the grsecurity support forum so upstream can deal with it: https://forums.grsecurity.net/
Comment by none (xxterry1xx) - Thursday, 13 November 2014, 00:34 GMT
Bug has been fixed by spender >> https://forums.grsecurity.net/viewtopic.php?f=3&t=4080

Thanks for adding the grsecurity forums link and thanks for the help/information.

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