https://bugzilla.suse.com/show_bug.cgi?id=1179538 Bug ID: 1179538 Summary: FAIL: gdb.arch/amd64-init-x87-values.exp: check_setting_mxcsr_before_enable: check new value of MXCSR is still in place Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Development Assignee: screening-team-bugs@suse.de Reporter: tdevries@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- In more detail: ... (gdb) PASS: gdb.arch/amd64-init-x87-values.exp: check_setting_mxcsr_before_enable: step forward one instruction for mxcsr test p/x $mxcsr^M $1 = 0x1f80^M (gdb) FAIL: gdb.arch/amd64-init-x87-values.exp: check_setting_mxcsr_before_enable: check new value of MXCSR is still in place ... This is with kernel-obs-build-5.9.11-1.1. So the scenario is as follows: - we set mxcsr to a non-default value - then we stepi past a nop - we check that mxcsr still has the same value - it turns out, it doesn't: the register is back to default value It sounds alot like the fix for https://bugzilla.kernel.org/show_bug.cgi?id=207979 is active: ... commit 7ad816762f9bf89e940e618ea40c43138b479e10 Author: Petteri Aimonen <jpa@git.mail.kapsi.fi> Date: Tue Jun 16 11:12:57 2020 +0200 x86/fpu: Reset MXCSR to default in kernel_fpu_begin() ... However, the commit has been in place since v5.8, and I don't see this problem on a laptop with tumbleweed running kernel v5.9.10. -- You are receiving this mail because: You are on the CC list for the bug.