------- Comment From thorsten.di...@de.ibm.com 2016-04-29 05:45 EDT------- At first I reproduced this on kernel 4.4.0-15:
Creating workload: cat /dev/urandom |gzip -9 > /dev/null & cat /dev/urandom |gzip -9 > /dev/null & ping 10.100.86.49 Let PCI device recover: for i in `seq 1 100`; do echo 1 > /sys/bus/pci/devices/0000\:00\:00.0/recover; echo $i;sleep 1;done On the 32nd recovery I got the kernel panic. Retried that and on the 19th recovery the panic occured. Updated system to 4.4.0-22.38 and performed the above steps. Problem did not occur after 2x 100 recoveries. Fix works. Waiting for integration into xenial stream. @Canonical: Please integrate into xenial and yaketty stream. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1572291 Title: s390/pci: add extra padding to function measurement block Status in Release Notes for Ubuntu: Fix Released Status in Ubuntu on IBM z Systems: Fix Committed Status in linux package in Ubuntu: Fix Committed Status in linux source package in Xenial: Fix Committed Bug description: Please backport upstream commit: commit 9d89d9e61d361f3adb75e1aebe4bb367faf16cfa Author: Sebastian Ott <seb...@linux.vnet.ibm.com> Date: Thu Mar 31 11:48:31 2016 +0200 s390/pci: add extra padding to function measurement block Newer machines might use a different (larger) format for function measurement blocks. To ensure that we comply with the alignment requirement on these machines and prevent memory corruption (when firmware writes more data than we expect) add 16 padding bytes at the end of the fmb. Cc: sta...@vger.kernel.org # v4.1+ Signed-off-by: Sebastian Ott <seb...@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidef...@de.ibm.com> arch/s390/include/asm/pci.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1572291/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
