** Changed in: ubuntu-z-systems Status: Fix Committed => Fix Released
** No longer affects: linux -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1597971 Title: kernel: signal return with invalid floating-point control Status in Ubuntu on IBM z Systems: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux source package in Xenial: Fix Released Status in linux source package in Yakkety: Fix Released Bug description: Please backport: commit bcf4dd5f9ee096bd1510f838dd4750c35df4e38b Author: Martin Schwidefsky <schwidef...@de.ibm.com> Date: Mon Jun 27 17:06:45 2016 +0200 s390: fix test_fp_ctl inline assembly contraints The test_fp_ctl function is used to test if a given value is a valid floating-point control. The inline assembly in test_fp_ctl uses an incorrect constraint for the 'orig_fpc' variable. If the compiler chooses the same register for 'fpc' and 'orig_fpc' the test_fp_ctl() function always returns true. This allows user space to trigger kernel oopses with invalid floating-point control values on the signal stack. This problem has been introduced with git commit 4725c86055f5bbdcdf "s390: fix save and restore of the floating-point-control register" Cc: sta...@vger.kernel.org # v3.13+ Reviewed-by: Heiko Carstens <heiko.carst...@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidef...@de.ibm.com> To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1597971/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp