** Changed in: ubuntu-z-systems
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1793086
Title:
qeth: use vzalloc for QUERY OAT buffer
Status in Ubuntu on IBM z Systems:
Fix Committed
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Bionic:
Fix Committed
Status in linux source package in Cosmic:
Fix Released
Bug description:
== SRU Justification ==
IBM reports the qethqoat tool fails. qeth_query_oat_command() currently
allocates the kernel buffer for the SIOC_QETH_QUERY_OAT ioctl with kzalloc.
This commit will cause the use of vzalloc() instead of kzalloc(), backing
the allocation with non-contiguous memory.
Xenial also needs this commit, but requres a slightly different
backport. It's SRU will be sent separate.
== Fix ==
aec45e857c55 ("s390/qeth: use vzalloc for QUERY OAT buffer")
== Regression Potential ==
Low, limited to s390.
== Test Case ==
IBM verified testing of this commit up-front.
Description: qeth: use vzalloc for QUERY OAT buffer
Symptom: qethqoat tool fails.
Problem: qeth_query_oat_command() currently allocates the kernel
buffer for the SIOC_QETH_QUERY_OAT ioctl with kzalloc.
Solution: Using vzalloc() instead of kzalloc(), backing the
allocation with non-contiguous memory.
Commit -ID: aec45e857c5538664edb76a60dd452e3265f37d1
kernel 4.19.
To be fixed for 18.10, 18,04 and 16.04.
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