[Bug libc/20468] New: SIGSEGV in internal_getent on amd64 xenial

["sokoow at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=20468

            Bug ID: 20468
           Summary: SIGSEGV in internal_getent on amd64 xenial
           Product: glibc
           Version: 2.23
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: sokoow at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Hey,

I'm running following platform:

ldd (Ubuntu GLIBC 2.23-0ubuntu3) 2.23
ARM64 Odroid C2

and trying to run Drone CI on golang, then I'm getting following SIGSEGV:

Thread 3 "drone" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f9a7b2090 (LWP 21950)]
0x0000007f98ddd334 in internal_getent (stream=0x7f840008c0, result=0x6a83ec
<net.glob..func11+84>, result@entry=0x2e302e302e373231, 
    buffer=0xca8e08 "gethostbyname4_r", buffer@entry=0x7f9a7b1010 "",
buflen=buflen@entry=1064, errnop=0x7f9a7b14c0, errnop@entry=0x7f9a7b15c0,
herrnop=0x0, 
    herrnop@entry=0x686c61636f6c0931, af=127, af@entry=0, flags=-1703211040,
flags@entry=0) at nss_files/files-XXX.c:251
251     nss_files/files-XXX.c: No such file or directory.
(gdb) bt
#0  0x0000007f98ddd334 in internal_getent (stream=0x7f840008c0, result=0x6a83ec
<net.glob..func11+84>, result@entry=0x2e302e302e373231, 
    buffer=0xca8e08 "gethostbyname4_r", buffer@entry=0x7f9a7b1010 "",
buflen=buflen@entry=1064, errnop=0x7f9a7b14c0, errnop@entry=0x7f9a7b15c0,
herrnop=0x0, 
    herrnop@entry=0x686c61636f6c0931, af=127, af@entry=0, flags=-1703211040,
flags@entry=0) at nss_files/files-XXX.c:251
#1  0x0000007f98dde2c0 in _nss_files_gethostbyname4_r (name=0x7f940008c0
"postgres.pharaoh.local", pat=0x7f9a7b15d0, buffer=0x7f9a7b1010 "",
buflen=1064, 
    errnop=0x7f9a7b15c0, herrnop=0x686c61636f6c0931, ttlp=<optimized out>) at
nss_files/files-hosts.c:392
#2  0x0000000000a71438 in gaih_inet ()
#3  0x0000000000a72ef0 in getaddrinfo ()
#4  0x00000000009b1bec in _cgo_7a2d42f1a351_C2func_getaddrinfo (v=0x442003ba88)
at /home/go/src/net/cgo_unix.go:66
#5  0x000000000047cf28 in runtime.asmcgocall () at
/home/go/src/runtime/asm_arm64.s:542
#6  0x00000044201716c0 in ?? ()
#7  0x0000000000000001 in ?? ()

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