New subject: [Bug 1048495] GCC 7 causes segfault illegal instruction in glibc with sse instructions using misaligned data on AMD Ryzen

13 Jul 2017

      http://bugzilla.opensuse.org/show_bug.cgi?id=1048495

            Bug ID: 1048495
           Summary: GCC 7 causes segfault illegal instruction in glibc
                    with sse instructions using misaligned data on AMD
                    Ryzen
    Classification: openSUSE
           Product: openSUSE Tumbleweed
           Version: Current
          Hardware: x86-64
                OS: Other
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: Basesystem
          Assignee: bnc-team-screening@forge.provo.novell.com
          Reporter: jon@moozaad.co.uk
        QA Contact: qa-bugs@suse.de
          Found By: ---
           Blocker: ---

Ref arch bug report https://bugs.archlinux.org/task/54136

0xf7a247c3 in __strspn_sse42 () from /lib/libc.so.6

The rest of the back trace is irrelevant as it's caused by misaligned data
according to the arch BR.

Glibc Version        : 2.25-2.4

Workaround compile flag is -mstackrealign at cost of performance. Not sure if
GCC or Ryzen bug.

I am trying to test a specific znver1 build but having trouble getting obs not
to error with illegal instruction (irony).

Reproduction: run civ 5 or borderlands 2 on tumbleweed - it errors when loading
the pulse audio config, same as the arch report.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug 1048495] New: GCC 7 causes segfault illegal instruction in glibc with sse instructions using misaligned data on AMD Ryzen

bugzilla_noreply＠novell.com

bugzilla_noreply＠novell.com

tags

participants (1)