Date: Tue, 22 Aug 2017 04:46:27 -0700 From: David Wolfskill <david@catwhisker.org> To: current@freebsd.org Subject: SIGSEGV in /bin/sh after r322740 -> r322776 update Message-ID: <20170822114627.GC1130@albert.catwhisker.org>
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Started with:
FreeBSD freebeast.catwhisker.org 12.0-CURRENT FreeBSD 12.0-CURRENT #445 r3=
22740M/322745:1200040: Mon Aug 21 04:35:19 PDT 2017 root@freebeast.catw=
hisker.org:/common/S4/obj/usr/src/sys/GENERIC amd64
After source-based update (which was uneventful):
FreeBSD freebeast.catwhisker.org 12.0-CURRENT FreeBSD 12.0-CURRENT #446 r3=
22776M/322778:1200041: Tue Aug 22 04:07:02 PDT 2017 root@freebeast.catw=
hisker.org:/common/S4/obj/usr/src/sys/GENERIC amd64
Rebooted; trying "make delete-old-libs" yields:
Segmentation fault (core dumped)
make: "/usr/src/share/mk/bsd.compiler.mk" line 159: warning: "echo "5.0.0 5=
=2E0.0svn)" | awk -F. '{print $1 * 10000 + $2 * 100 + $3;}'" returned non-z=
ero status
Segmentation fault (core dumped)
make: "/usr/src/share/mk/bsd.compiler.mk" line 164: warning: "{ echo "__Fre=
eBSD_cc_version" | cc -E - 2>/dev/null || echo __FreeBSD_cc_version; } | se=
d -n '$p'" returned non-zero status
Segmentation fault (core dumped)
make: "/usr/src/share/mk/bsd.linker.mk" line 56: warning: Unknown linker fr=
om LD=3Dld: , defaulting to bfd
Segmentation fault (core dumped)
make: "/usr/src/share/mk/bsd.linker.mk" line 61: warning: "echo "2.17.50" |=
awk -F. '{print $1 * 10000 + $2 * 100 + $3;}'" returned non-zero status
Segmentation fault (core dumped)
Segmentation fault (core dumped)
make[1]: "/usr/src/share/mk/bsd.compiler.mk" line 155: Unable to determine =
compiler type for CC=3Dcc. Consider setting COMPILER_TYPE.
*** Error code 1
Stop.
make: stopped in /usr/src
=2EERROR_TARGET=3D'delete-old-libs'
=2EERROR_META_FILE=3D''
=2EMAKE.LEVEL=3D'0'
MAKEFILE=3D''
=2EMAKE.MODE=3D'normal'
_ERROR_CMD=3D'.PHONY'
=2ECURDIR=3D'/usr/src'
=2EMAKE=3D'make'
=2EOBJDIR=3D'/usr/obj/usr/src'
=2ETARGETS=3D'delete-old-libs'
DESTDIR=3D''
LD_LIBRARY_PATH=3D''
MACHINE=3D'amd64'
MACHINE_ARCH=3D'amd64'
MAKEOBJDIRPREFIX=3D'/usr/obj'
MAKESYSPATH=3D'/usr/src/share/mk'
MAKE_VERSION=3D'20170720'
PATH=3D'/sbin:/bin:/usr/sbin:/usr/bin'
SRCTOP=3D'/usr/src'
OBJTOP=3D'/usr/obj/usr/src'
I actually *first* noticed the issue on my laptop -- above was my
builld machine. On laptop, I run xdm; entered login & password;
screen blanked, then returned to fresh login screen. Loggedin on
vty, and found sh.core. "file sh.core" said:
g1-252(11.1-S)[4] file sh.core=20
sh.core: ELF 64-bit LSB core file x86-64, version 1 (FreeBSD), FreeBSD-styl=
e, from ' /usr/local/lib/X11/xdm/Xsession'
Files affected by the update were:
Updating '/S4/usr/src':
A /S4/usr/src/cddl/contrib/opensolaris/cmd/dtrace/test/tst/common/llquan=
tize/err.D_LLQUANT_MAGTOOBIG.offbyone.d
U /S4/usr/src/cddl/contrib/opensolaris/lib/libdtrace/common/dt_cc.c
U /S4/usr/src/cddl/usr.sbin/dtrace/tests/common/llquantize/Makefile
U /S4/usr/src/contrib/top/loadavg.h
U /S4/usr/src/kerberos5/libexec/kpasswdd/Makefile
U /S4/usr/src/lib/libc/amd64/sys/Makefile.inc
A /S4/usr/src/lib/libc/amd64/sys/amd64_detect_rdfsgsbase.c
A /S4/usr/src/lib/libc/amd64/sys/amd64_detect_rdfsgsbase.h
U /S4/usr/src/lib/libc/amd64/sys/amd64_get_fsbase.c
U /S4/usr/src/lib/libc/amd64/sys/amd64_get_gsbase.c
U /S4/usr/src/lib/libc/amd64/sys/amd64_set_fsbase.c
U /S4/usr/src/lib/libc/amd64/sys/amd64_set_gsbase.c
U /S4/usr/src/lib/libc/mips/Symbol.map
U /S4/usr/src/lib/libcompiler_rt/Makefile.inc
U /S4/usr/src/share/man/man7/tests.7
U /S4/usr/src/sys/amd64/amd64/cpu_switch.S
U /S4/usr/src/sys/amd64/amd64/exception.S
U /S4/usr/src/sys/amd64/amd64/machdep.c
U /S4/usr/src/sys/amd64/amd64/ptrace_machdep.c
U /S4/usr/src/sys/amd64/amd64/sys_machdep.c
U /S4/usr/src/sys/amd64/amd64/vm_machdep.c
U /S4/usr/src/sys/amd64/include/asmacros.h
U /S4/usr/src/sys/amd64/include/pcb.h
U /S4/usr/src/sys/arm64/arm64/swtch.S
U /S4/usr/src/sys/cddl/contrib/opensolaris/uts/common/sys/isa_defs.h
U /S4/usr/src/sys/compat/linuxkpi/common/src/linux_rcu.c
U /S4/usr/src/sys/dev/qlxgbe/README.txt
U /S4/usr/src/sys/dev/qlxgbe/ql_boot.c
U /S4/usr/src/sys/dev/qlxgbe/ql_def.h
U /S4/usr/src/sys/dev/qlxgbe/ql_fw.c
U /S4/usr/src/sys/dev/qlxgbe/ql_glbl.h
U /S4/usr/src/sys/dev/qlxgbe/ql_hw.c
U /S4/usr/src/sys/dev/qlxgbe/ql_hw.h
U /S4/usr/src/sys/dev/qlxgbe/ql_inline.h
U /S4/usr/src/sys/dev/qlxgbe/ql_ioctl.c
U /S4/usr/src/sys/dev/qlxgbe/ql_isr.c
U /S4/usr/src/sys/dev/qlxgbe/ql_minidump.c
U /S4/usr/src/sys/dev/qlxgbe/ql_os.c
U /S4/usr/src/sys/dev/qlxgbe/ql_os.h
U /S4/usr/src/sys/dev/qlxgbe/ql_reset.c
U /S4/usr/src/sys/dev/qlxgbe/ql_ver.h
U /S4/usr/src/sys/kern/subr_smp.c
U /S4/usr/src/sys/mips/mips/exception.S
U /S4/usr/src/sys/modules/qlxgbe/Makefile
U /S4/usr/src/sys/netipsec/ipsec.c
U /S4/usr/src/sys/netipsec/ipsec.h
U /S4/usr/src/sys/netipsec/ipsec6.h
U /S4/usr/src/sys/netipsec/ipsec_output.c
U /S4/usr/src/sys/sys/param.h
U /S4/usr/src/sys/sys/smp.h
U /S4/usr/src/sys/ufs/ffs/ffs_softdep.c
U /S4/usr/src/sys/x86/x86/mp_x86.c
U /S4/usr/src/usr.sbin/chown/tests/chown_test.sh
Updated to revision 322778.
lldb's notion of the backtrace was fairly non-useful:
g1-252(11.1-S)[7] lldb -c sh.core
(lldb) target create --core "sh.core"
Core file '/home/david/sh.core' (x86_64) was loaded.
(lldb) bt
* thread #1, name =3D 'sh', stop reason =3D signal SIGSEGV
* frame #0: 0x0000000800b6ee08
frame #1: 0x0000000800000003
(lldb)=20
I have rebooted the laptop back to stable/11, but the bujild machine
is available for me to poke at. I am able to login (login shell is
/bin/csh), but not at all sure what sort of evasive maneuvers will be
needed to escape from this. I do have a freshly-built stable/11 /bin/sh,
and misc/compat11x installed, so that *might* provide an option....
Peace,
david
--=20
David H. Wolfskill david@catwhisker.org
If we wish to eliminate sources of Fake News, start at the top: D. Trump.
See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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