Hi

Is it normal that setiathome_8.00_x86_64-pc-linux-gnu process fails each time with segmentation fault?

setiathome_8.05_i686-pc-linux-gnu works fine, but it doesn't seem right that 64b version doesn't work on 64b CPU.
setiathome_8.00_x86_64-pc-linux-gnu crashes each time. If that's expected (i.e. this binary is broken) then what's the point of sending tasks that use a broken binary?

$ ldd ./setiathome_8.05_i686-pc-linux-gnu 
	not a dynamic executable
$ file ./setiathome_8.05_i686-pc-linux-gnu 
./setiathome_8.05_i686-pc-linux-gnu: ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.18, BuildID[sha1]=97fdf692216e3cf4357b37395e15ae70a28db86e, stripped
$ ldd ./setiathome_8.00_x86_64-pc-linux-gnu 
	not a dynamic executable
$ file ./setiathome_8.00_x86_64-pc-linux-gnu
./setiathome_8.00_x86_64-pc-linux-gnu: ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, for GNU/Linux 2.6.18, BuildID[sha1]=4bd040ef6864f72e0cff04873128044337f1aca5, stripped

Binary itself seems to work:

$ ./setiathome_8.00_x86_64-pc-linux-gnu -version
SETI@home client.
Version: 8.00

SETI@home is sponsored by individual donors around the world.
(... a lot of text ...)
Tetsuji 'Maverick' Rai and Rom Walton

So it doesn't seem to miss any libraries etc. If I execute it without any options it will crash every time:

# ./setiathome_8.00_x86_64-pc-linux-gnu 
Segmentation fault (core dumped)

Execution in gdb doesn't explain much:

(...)
Reading symbols from ./setiathome_8.00_x86_64-pc-linux-gnu...
(No debugging symbols found in ./setiathome_8.00_x86_64-pc-linux-gnu)
(gdb) run
Starting program: /var/lib/boinc/projects/setiathome.berkeley.edu/setiathome_8.00_x86_64-pc-linux-gnu 

Program received signal SIGSEGV, Segmentation fault.
0xffffffffff600400 in ?? ()
(gdb) bt
#0  0xffffffffff600400 in ?? ()
#1  0x000000000074b3ad in ?? ()
#2  0x00000000004c17e3 in ?? ()
#3  0x00000000004c2996 in ?? ()
#4  0x00000000004007aa in ?? ()
#5  0x00000000006f716b in ?? ()
#6  0x0000000000400449 in ?? ()
#7  0x00007fffffffeb48 in ?? ()
#8  0x0000000000000000 in ?? ()
(gdb) info th
  Id   Target Id                      Frame 
* 1    process 5821 "setiathome_8.00" 0xffffffffff600400 in ?? ()

Stack looks kinda wierd due to that 0x00 at the very bottom.

When I run i686 version in the same way app just exits with code 251. Probably notices missing options and bails out.

I checked it with strace and it seems to try to actually do something, but fails fast:

$ strace -e file ./setiathome_8.00_x86_64-pc-linux-gnu
execve("./setiathome_8.00_x86_64-pc-linux-gnu", ["./setiathome_8.00_x86_64-pc-linu"...], 0x7ffcce07c420 /* 17 vars */) = 0
stat("stderr.txt", {st_mode=S_IFREG|0644, st_size=283, ...}) = 0
open("stderr.txt", O_WRONLY|O_CREAT|O_APPEND, 0666) = 2
open("init_data.xml", O_RDONLY)         = -1 ENOENT (No such file or directory)
stat("init_data.xml", 0x7ffdf7f09a90)   = -1 ENOENT (No such file or directory)
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0xffffffffff600400} ---
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0xffffffffff600400} ---
+++ killed by SIGSEGV (core dumped) +++
Segmentation fault (core dumped)

When I run it with -e all it also crashes right after that stat call. I have no idea if that's what happens when executed by boinc.

i686 version seems to do same thing:

# strace -e file ./setiathome_8.05_i686-pc-linux-gnu
execve("./setiathome_8.05_i686-pc-linux-gnu", ["./setiathome_8.05_i686-pc-linux-"...], 0x7ffefce1d460 /* 17 vars */) = 0
strace: [ Process PID=6018 runs in 32 bit mode. ]
stat64("stderr.txt", {st_mode=S_IFREG|0644, st_size=726, ...}) = 0
open("stderr.txt", O_WRONLY|O_CREAT|O_APPEND|O_LARGEFILE, 0666) = 2
open("init_data.xml", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
stat64("init_data.xml", 0xff914370)     = -1 ENOENT (No such file or directory)
open("/etc/localtime", O_RDONLY)        = 3
open("boinc_setiathome_0", O_RDWR|O_CREAT|O_LARGEFILE, 0666) = 3
chmod("boinc_setiathome_0", 0660)       = 0
open("boinc_lockfile", O_WRONLY|O_CREAT|O_LARGEFILE, 0664) = 3
stat64("init_data.xml", 0xff913c30)     = -1 ENOENT (No such file or directory)
lstat64("work_unit.sah", 0xff913d50)    = -1 ENOENT (No such file or directory)
stat64("work_unit.sah", 0xff913d10)     = -1 ENOENT (No such file or directory)
stat64("work_unit.sah", 0xff913f50)     = -1 ENOENT (No such file or directory)
+++ exited with 251 +++

But it continues and just exits gracefully.

Environment information:
up-to-date Arch Linux (fresh install),
CPU: Intel(R) Atom(TM) x5-Z8350 CPU @ 1.44GHz (multiple machines, same issue on every one)
uname: Linux 5.1.9-arch1-1-ARCH #1 SMP PREEMPT Tue Jun 11 16:18:09 UTC 2019 x86_64 GNU/Linux

However this happens also on my desktop machine:
same OS, also up-to-date.
CPU: Intel(R) Core(TM) i5-3350P CPU @ 3.10GHz

Are there binaries that contain debug symbols so I can dig deeper or maybe I should just ignore it and wait for x86_64 queue to be failed and replaced by i686 one (which happens eventually)?

Not sure where you got those executables. They don't appear to be valid Seti cpu applications that are shown on the applications page.
https://setiathome.berkeley.edu/apps.php
The official Linux x86_64 is version 8.00. I believe the binary is named MBv8_8.0r3305_sse3_x86_64-pc-linux-gnu.

---

Seti@Home classic workunits:20,676 CPU time:74,226 hours

A proud member of the OFA (Old Farts Association)

Executables were downloaded automatically by BOINC client when I attached SETI project using --project_attach in boinccmd.

x86_64 version is marked as 8.00: setiathome_8.00_x86_64-pc-linux-gnu
i686 version is marked as 8.05: setiathome_8.05_i686-pc-linux-gnu

Both match versions listed on page you provided. Too bad that there isn't any easy way to validate the files by checking signatures or at least checksums. I can only assume that automatically downloaded are valid.

SHA-256 of both files:
d184f1bd05998711bfeac747366d19446c0e59c2e57e8a8cc2cb88b2e3724c97 setiathome_8.00_x86_64-pc-linux-gnu
9d93a96df6b32f0cff4eb943892a0f8cf33eeff3e0d7ab326906fa384140849f setiathome_8.05_i686-pc-linux-gnu

Both compiled with GCC 4.4.7:
setiathome_v8 8.00 Revision: 3290 g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4)
setiathome_v8 8.00 Revision: 3335 g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4)
for x86_64 and i686 version respectively.