Date: Tue, 20 Feb 2018 10:34:23 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 226059] Clang produces vmovaps with unaligned operand Message-ID: <bug-226059-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226059 Bug ID: 226059 Summary: Clang produces vmovaps with unaligned operand Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: 6yearold@gmail.com I am compiling lang/ghc with CPUTYPE?=native set. The ghc-pkg executable produced during build gets broken. During staging step, the following command is run /wrkdirs/usr/ports/lang/ghc/work/stage/usr/local/lib/ghc-8.0.2/bin/ghc-pkg --force --global-package-db "/wrkdirs/usr/ports/lang/ghc/work/stage/usr/local/lib/ghc-8.0.2/package.conf.d" update rts/dist/package.conf.install but it fails with SIGBUS. Debugging under LLDB gives (lldb) run Process 29833 stopped * thread #1, name = 'ghc-pkg', stop reason = signal SIGBUS: hardware error frame #0: 0x0000000804e476c6 libHSrts-ghc8.0.2.so`initGcThreads [inlined] new_gc_thread(n=0) at GC.c:818 815 ws->todo_q = newWSDeque(128); 816 ws->todo_overflow = NULL; 817 ws->n_todo_overflow = 0; -> 818 ws->todo_large_objects = NULL; 819 820 ws->part_list = NULL; 821 ws->n_part_blocks = 0; (lldb) disas -F intel -> 0x804e476c6 <+326>: vmovaps ymmword ptr [rbx + 0x40], ymm0 The value of rbx + 0x40 mod 16 = 0, but rbx + 0x40 mod 32 = 16, which is a source of the error, I suspect. Steps to reproduce: # echo CPUTYPE?=native >> /usr/local/etc/poudriere.d/<yourjail>-<yourports>-make.conf # poudriere testport -j yourjail -p yourports -I lang/ghc Once that fails, enter the jail and # cd /wrkdirs/usr/ports/lang/ghc/work/ghc-8.0.2 # lldb -- /wrkdirs/usr/ports/lang/ghc/work/stage/usr/local/lib/ghc-8.0.2/bin/ghc-pkg --force --global-package-db "/wrkdirs/usr/ports/lang/ghc/work/stage/usr/local/lib/ghc-8.0.2/package.conf.d" update rts/dist/package.conf.install The same bug is present on 11.1-RELEASE too. -- You are receiving this mail because: You are the assignee for the bug.
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