On 2020-Mar-16, at 21:48, Mark Millard wrote:
> Context: head -r358966 attempting to update ports
> to -r528535 . Also, 50+ ports built just fine
> but the below has been repeatable in my context.
>
> The original failure was under devel/poudriere-devel (with
> nxb-bin/ materials used). But part of the below is from
> exploring with various steps in a handier context.
>
> The original error message was:
>
> ===
> ===> Building for ca_root_nss-3.51
> ## Untrusted certificates omitted from this bundle: 2
> openssl x509 failed with exit code 11 at
> /wrkdirs/usr/ports/security/ca_root_nss/work/MAca-bundle.pl line 78.
> *** Error code 255
>
> The original source that reported the message was:
>
> sub printcert_info($$)
> {
>my (undef, $certdata) = @_;
>return unless $certdata;
>open(OUT, "|openssl x509 -text -inform DER -fingerprint")
>|| die "could not pipe to openssl x509";
>print OUT $certdata;
>close(OUT) or die "openssl x509 failed with exit code $?";
> }
>
> The die produced:
>
> -rw-r--r-- 1 root wheel 7909376 Mar 17 03:18:04 2020 qemu_openssl.core
>
> gdb reported for it:
>
> Core was generated by `openssl'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0 0xf501adb4 in memcpy () from /libexec/ld-elf.so.1
>
> and:
>
> (gdb) info threads
> Id Target Id Frame
> * 1LWP 1592 "x509" 0xf501adb4 in memcpy () from /libexec/ld-elf.so.1
>
> and:
>
> gdb) bt
> #0 0xf501adb4 in memcpy () from /libexec/ld-elf.so.1
> #1 0xf5004cd0 in do_copy_relocations () from /libexec/ld-elf.so.1
>
> and (from a disass):
>
> => 0xf501adb4 <+436>: strdr4, [r3], #8
>
> (It was not clear what code context to supply so
> I stuck to showing the instruction with the register
> used such that SIGSEGV could result from the use: r3 .)
>
> Finally the registers were listed as holding:
>
> (gdb) info reg
> r0 0xf4f5d57c 4109751676
> r1 0x1420
> r2 0x93000 602112
> r3 0x1 1
> r4 0x1016
> r5 0x9fffdfa4 2684346276
> r6 0xf4fe2404 4110296068
> r7 0xf4fe2004 4110295044
> r8 0x93000 602112
> r9 0x93000 602112
> r100x9fffdfe0 2684346336
> r110x0 0
> r120x9fffdf80 2684346240
> sp 0x9fffdf80 0x9fffdf80
> lr 0xf5004cd0 4110437584
> pc 0xf501adb4 0xf501adb4
> cpsr 0x6010 1610612752
>
> Yep: r3==1 would do it.
>
>
> Note: I've otherwise ignored here seeing lots of:
>
> qemu: unsupported syscall: 574 (calling anyway)
>
> notices while doing things for extracting
> this information.
>
>
> I'll note that I had no such SIGSEGV when
> ca_root_nss 3.50 built back at OSVERSION=1300077
> on 2020-Feb-16: it built and worked fine back
> then.
>
>
>
> I'm not sure when I'll have time to do more with this
> or if I will again just abandon qemu-user-static for
> a time. (Insufficient time to allocate to do more?)
> Hopefully the basic information is useful to someone
> at some point.
>
> I'm not claiming that I know qemu-user-static is the
> problem, or openssl, or whatever. Just that the
> combination is broken in my context.
>
> Having security/ca_root_nss blocked, blocks
> cross-building lots of other things, including
> devel/llvm10 .
Using:
# poudriere bulk -j FBSDFSSDjailArmV7 -i -w ports-mgmt/portmaster
to allow trying things from inside the poudriere
build environment, I tried:
# openssl
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
# file `which openssl`
/usr/bin/openssl: ELF 32-bit LSB executable, ARM, EABI5 version 1 (FreeBSD),
dynamically linked, interpreter /libexec/ld-elf.so.1, for FreeBSD 13.0
(1300084), FreeBSD-style, not stripped
The backtrace was again memcpy and do_copy_relocations.
(So "x509" had nothing to do with the inability to
run the original failed command.)
===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)
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