Date: Tue, 13 Sep 2016 03:19:07 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-i386@FreeBSD.org Subject: [Bug 212639] kernel/386: i386_set_ldt/i386_ldt_grow run out of LDT, because M_ZERO missing in user_ldt_alloc? Message-ID: <bug-212639-10@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D212639 Bug ID: 212639 Summary: kernel/386: i386_set_ldt/i386_ldt_grow run out of LDT, because M_ZERO missing in user_ldt_alloc? Product: Base System Version: CURRENT Hardware: i386 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: wheelcomplex@gmail.com CC: freebsd-i386@FreeBSD.org CC: freebsd-i386@FreeBSD.org Go compiler crash with "signal: trace/BPT trap" when running testing concurrently(and lead to heavy load). Core-dump and kernel debug log telling that it is trigger by i386_set_ldt/i386_ldt_grow run out of LDT. Fix by change kmem_malloc flags from "M_WAITOK" to "M_WAITOK | M_ZERO" in user_ldt_alloc=20 (https://github.com/freebsd/freebsd/blob/master/sys/i386/i386/sys_machdep.c= #L441) More detail: https://github.com/golang/go/issues/16950 --=20 You are receiving this mail because: You are on the CC list for the bug.=
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