https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82284
Bug ID: 82284
Summary: [7 Regression] go -version segfaults on big endian
architectures
Product: gcc
Version: 7.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: doko at gcc dot gnu.org
CC: cmang at google dot com
Target Milestone: ---
[forwarded from https://bugs.debian.org/876353]
seen on the gcc-7-branch, last known working version on the branch was r251446.
works on the gcc-6-branch and trunk.
segmentation fault running `go-7 version` on ppc64 arch (BE).
dmesg is
[1619215.799421] go-7[12079]: unhandled signal 11 at 000000001010a540 nip
00007fff95bfadac lr 00007fff9705d458 code 30001
#0 __strrchr_vx () at ../sysdeps/s390/multiarch/strrchr-vx.S:46
#1 0x000003fffd622ca2 in elf_find_debugfile_by_debuglink (data=<optimized
out>,
error_callback=<optimized out>, debuglink_name=<optimized out>,
filename=<optimized out>,
state=<optimized out>) at ../../../src/libbacktrace/elf.c:862
#2 elf_open_debugfile_by_debuglink (data=<optimized out>,
error_callback=<optimized out>,
debuglink_crc=<optimized out>, debuglink_name=<optimized out>,
filename=<optimized out>,
state=<optimized out>) at ../../../src/libbacktrace/elf.c:923
#3 elf_add (state=0x3fffdfb1000,
filename=filename@entry=0x7f7f7f7f7f7f7f7f <error: Cannot access memory at
address 0x7f7f7f7f7f7f7f7f>, descriptor=<optimized out>,
base_address=<optimized out>,
error_callback=error_callback@entry=0x3fffd161868 <error_callback>,
data=0x3ffffffe900,
fileline_fn=0x3ffffffde48, found_sym=0x3ffffffe028,
found_dwarf=0x3ffffffde44, exe=0,
debuginfo=0) at ../../../src/libbacktrace/elf.c:1295
#4 0x000003fffd623248 in phdr_callback (info=0x3ffffffdf00, size=<optimized
out>,
pdata=0x3ffffffe038) at ../../../src/libbacktrace/elf.c:1453
#5 0x000003fffc4c0446 in __GI___dl_iterate_phdr (
callback=callback@entry=0x3fffd6231a0 <phdr_callback>, data=<optimized
out>,
data@entry=0x3ffffffe038) at dl-iteratephdr.c:76
#6 0x000003fffd6233e6 in backtrace_initialize
(state=state@entry=0x3fffdfb1000,
filename=filename@entry=0x3fffd826964 "/proc/self/exe",
descriptor=<optimized out>,
error_callback=error_callback@entry=0x3fffd161868 <error_callback>,
data=data@entry=0x3ffffffe900, fileline_fn=0x3ffffffe130)
at ../../../src/libbacktrace/elf.c:1495
#7 0x000003fffd6211a0 in fileline_initialize (state=state@entry=0x3fffdfb1000,
error_callback=error_callback@entry=0x3fffd161868 <error_callback>,
data=data@entry=0x3ffffffe900) at ../../../src/libbacktrace/fileline.c:136
#8 0x000003fffd621212 in backtrace_pcinfo (state=0x3fffdfb1000,
pc=4397997627705,
callback=0x3fffd1615d0 <callback>, error_callback=0x3fffd161868
<error_callback>,
data=data@entry=0x3ffffffe900) at ../../../src/libbacktrace/fileline.c:170
#9 0x000003fffd6218c2 in unwind (context=<optimized out>, vdata=0x3ffffffe828)
at ../../../src/libbacktrace/backtrace.c:91
#10 0x000003fffc18a064 in _Unwind_Backtrace () from
/lib/s390x-linux-gnu/libgcc_s.so.1
#11 0x000003fffd621964 in backtrace_full (state=0x3fffdfb1000,
skip=skip@entry=0,
callback=callback@entry=0x3fffd1615d0 <callback>,
error_callback=error_callback@entry=0x3fffd161868 <error_callback>,
data=data@entry=0x3ffffffe900) at ../../../src/libbacktrace/backtrace.c:127
#12 0x000003fffd16193a in runtime_callers (skip=skip@entry=4,
locbuf=locbuf@entry=0x3ffffffea10,
m=m@entry=32, keep_thunks=keep_thunks@entry=false)
at ../../../src/libgo/runtime/go-callers.c:170
#13 0x000003fffd588b3a in runtime.callers (skip=4, locbuf=...)
at ../../../src/libgo/go/runtime/traceback_gccgo.go:63
#14 runtime.mProf_Malloc (p=<optimized out>,
p@entry=<error reading variable: value has been optimized out>,
size=size@entry=1536)
data=data@entry=0x3ffffffe900) at ../../../src/libbacktrace/fileline.c:136
#8 0x000003fffd621212 in backtrace_pcinfo (state=0x3fffdfb1000,
pc=4397997627705,
callback=0x3fffd1615d0 <callback>, error_callback=0x3fffd161868
<error_callback>,
data=data@entry=0x3ffffffe900) at ../../../src/libbacktrace/fileline.c:170
#9 0x000003fffd6218c2 in unwind (context=<optimized out>, vdata=0x3ffffffe828)
at ../../../src/libbacktrace/backtrace.c:91
#10 0x000003fffc18a064 in _Unwind_Backtrace () from
/lib/s390x-linux-gnu/libgcc_s.so.1
#11 0x000003fffd621964 in backtrace_full (state=0x3fffdfb1000,
skip=skip@entry=0,
callback=callback@entry=0x3fffd1615d0 <callback>,
error_callback=error_callback@entry=0x3fffd161868 <error_callback>,
data=data@entry=0x3ffffffe900) at ../../../src/libbacktrace/backtrace.c:127
#12 0x000003fffd16193a in runtime_callers (skip=skip@entry=4,
locbuf=locbuf@entry=0x3ffffffea10,
m=m@entry=32, keep_thunks=keep_thunks@entry=false)
at ../../../src/libgo/runtime/go-callers.c:170
#13 0x000003fffd588b3a in runtime.callers (skip=4, locbuf=...)
at ../../../src/libgo/go/runtime/traceback_gccgo.go:63
#14 runtime.mProf_Malloc (p=<optimized out>,
p@entry=<error reading variable: value has been optimized out>,
size=size@entry=1536)
---Type <return> to continue, or q <return> to quit---
at ../../../src/libgo/go/runtime/mprof.go:254
#15 0x000003fffd16fdea in runtime_profilealloc (size=1536, v=<optimized out>)
at ../../../src/libgo/runtime/malloc.goc:308
#16 runtime_mallocgc (size=1536, size@entry=1432, typ=<optimized out>,
typ@entry=4398009200432,
flag=0) at ../../../src/libgo/runtime/malloc.goc:245
#17 0x000003fffd16237e in __go_new (td=td@entry=0x3fffdc6af30
<__go_tdn_runtime..runtime.g>,
size=size@entry=1432) at ../../../src/libgo/runtime/go-new.c:15
#18 0x000003fffd56e5e4 in runtime.allocg () at
../../../src/libgo/go/runtime/stubs.go:514
#19 0x000003fffd16e8ac in runtime.malg (allocatestack=allocatestack@entry=true,
signalstack=signalstack@entry=true,
ret_stack=ret_stack@entry=0x3fffdeb9478 <runtime_m0+1960>,
ret_stacksize=ret_stacksize@entry=0x3fffdeb9480 <runtime_m0+1968>)
at ../../../src/libgo/runtime/proc.c:1349
#20 0x000003fffd57bdf8 in runtime.mpreinit (mp=0x3fffdeb8cd0 <runtime_m0>)
at ../../../src/libgo/go/runtime/os_gccgo.go:17
#21 runtime.mcommoninit (mp=mp@entry=0x3fffdeb8cd0 <runtime_m0>)
at ../../../src/libgo/go/runtime/proc.go:241
#22 0x000003fffd16dd0e in runtime_schedinit () at
../../../src/libgo/runtime/proc.c:490
#23 0x000002aa0004521c in main ()
#24 0x000003fffc3a2f4a in __libc_start_main (main=0x2aa00045180 <main>,
argc=<optimized out>,
argv=0x3fffffff678, init=<optimized out>, fini=0x2aa000a73a0,
rtld_fini=0x3fffdf90b70 <_dl_fini>, stack_end=0x3fffffff5c0) at
libc-start.c:308
#25 0x000002aa0004528c in ?? ()
PC not saved
