[Bug ld/22592] New: Segfaults when compiling cifs-utils with "-pie" on Gentoo Linux (sparc)

[eb at emlix dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=22592

            Bug ID: 22592
           Summary: Segfaults when compiling cifs-utils with "-pie" on
                    Gentoo Linux (sparc)
           Product: binutils
           Version: 2.29
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: eb at emlix dot com
  Target Milestone: ---
              Host: sparc-unknown-linux-gnu
            Target: sparc-unknown-linux-gnu

Created attachment 10682
  --> https://sourceware.org/bugzilla/attachment.cgi?id=10682&action=edit
object files and shared libraries

The compiler is gcc 6.4.0. Switching to binutils 2.28.1 makes things work.
Commit a9d44aad42 is applied.

castor /var/tmp/portage/net-fs/cifs-utils-6.4/work/cifs-utils-6.4 #  sparc-
unknown-linux-gnu-gcc -Wall -Wextra -D_FORTIFY_SOURCE=2 -fpie -pie -Wl,-
z,relro,-z,now -O2 -mcpu=niagara2 -pipe  -Wl,-O1 -Wl,--as-needed -o 
cifs.upcall cifs.upcall.o data_blob.o asn1.o spnego.o -ltalloc -lkeyutils -
lkrb5
collect2: fatal error: ld terminated with signal 11 [Segmentation fault]
compilation terminated.
castor /var/tmp/portage/net-fs/cifs-utils-6.4/work/cifs-utils-6.4 #  sparc-
unknown-linux-gnu-gcc -Wall -Wextra -D_FORTIFY_SOURCE=2 -fpie -Wl,-z,relro,-
z,now -O2 -mcpu=niagara2 -pipe  -Wl,-O1 -Wl,--as-needed -o cifs.upcall 
cifs.upcall.o data_blob.o asn1.o spnego.o -ltalloc -lkeyutils -lkrb5
castor /var/tmp/portage/net-fs/cifs-utils-6.4/work/cifs-utils-6.4 #

(gdb) bt
#0  0xf7d8d4e4 in free () from /lib/libc.so.6
#1  0xf7f89f3c in objalloc_free () from /usr/lib/binutils/sparc-unknown-linux-
gnu/2.29.1/libbfd-2.29.1.so
#2  0xf7f00ea4 in  () from /usr/lib/binutils/sparc-unknown-linux-gnu/2.29.1/
libbfd-2.29.1.so

The final commandline is:

/usr/lib/gcc/sparc-unknown-linux-gnu/6.4.0/../../../../sparc-unknown-linux-
gnu/bin/ld -plugin-opt=/usr/libexec/gcc/sparc-unknown-linux-gnu/6.4.0/lto-
wrapper -plugin-opt=-fresolution=/tmp/ccHxes2d.res -plugin-opt=-pass-through=-
lgcc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lc -plugin-
opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lgcc_s --eh-frame-hdr -m 
elf32_sparc -dynamic-linker /lib/ld-linux.so.2 -relax -pie -o cifs.upcall /
usr/lib/gcc/sparc-unknown-linux-gnu/6.4.0/../../../../lib/Scrt1.o /usr/lib/
gcc/sparc-unknown-linux-gnu/6.4.0/../../../../lib/crti.o /usr/lib/gcc/sparc-
unknown-linux-gnu/6.4.0/crtbeginS.o -L/usr/lib/gcc/sparc-unknown-linux-gnu/
6.4.0 -L/usr/lib/gcc/sparc-unknown-linux-gnu/6.4.0/../../../../sparc-unknown-
linux-gnu/lib/../lib -L/usr/lib/gcc/sparc-unknown-linux-gnu/6.4.0/../../../../
lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/sparc-unknown-linux-gnu/
6.4.0/../../../../sparc-unknown-linux-gnu/lib -L/usr/lib/gcc/sparc-unknown-
linux-gnu/6.4.0/../../.. -z relro -z now -O1 --as-needed cifs.upcall.o 
data_blob.o asn1.o spnego.o -ltalloc -lkeyutils -lkrb5 -lgcc --as-needed -
lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/
gcc/sparc-unknown-linux-gnu/6.4.0/crtendS.o /usr/lib/gcc/sparc-unknown-linux-
gnu/6.4.0/../../../../lib/crtn.o

The lto-plugin part is irrelevant, the crash happens also without it. Again,
removing "-pie" fixes it.

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