[erlang-bugs] Segmentation fault in erts_printf_char (R13B04)

Tue Mar 1 11:54:28 CET 2011

Not much to go on here, could be anything.

Could you supply the rest of the stack, i.e. who calls the print_term 
function?

Also, by using the etp-commands gdb macros (in source tree, 
$ERL_TOP/erts/etc/unix/), you could see the term that's being printed.
Is it corrupted?

I would also try increasing the schedulers stacksize (erl +sss Value), as 
it could be a stack overrun (the parameters to the functions seem ok, but 
that's a wild guess).

/Patrik

On Fri, 4 Feb 2011, Kustarto Widoyo wrote:

> Hi All,
>
> We found that our application was crashed and core dump file was generated, 
> but not found any erl_crash.dump file created.
>
> * The application uses erlang distribution protocol that more than 50 nodes 
> are involving in. All nodes run on Redhat 5.3.
>
> * We're using Erlang R13B04 64 bit built from source and the following 
> patches have been applied:
> 	otp_src_R13B04-OTP-8475.patch
> 	otp_src_R13B04-OTP-8612.patch
> 	otp_src_R13B04-OTP-8643.patch
> 	otp_src_R13B04-OTP-8658.patch
> 	otp_src_R13B04-OTP-8661.patch
> 	otp_src_R13B04-OTP-8662.patch
> 	otp_src_R13B04-beam-break.patch
> 	otp_src_R13B04-emacs.patch
> 	otp_src_R13B04-erl_poll.patch
> 	otp_src_R13B04-erts_de_busy_limit.patch
> 	otp_src_R13B04-eunit.patch
> 	otp_src_R13B04-httpc-memoryleak.patch
> 	otp_src_R13B04-patch-etop.patch
> 	otp_src_R13B04-patch-odbc-oracleworkaround.patch
> 	otp_src_R13B04-supervisor.patch
>
> * The erl command line we use:
> $ /usr/local/gemini/ert/R13B04/lib/erlang/erts-5.7.5/bin/beam.smp -A 64 -K 
> true -S 0 -- -root /usr/local/gemini/ert/R13B04/lib/erlang -progname erl -- 
> -home /export/home/mmssys -- -smp enable -noshell -noinput -noshell -sname 
> gdss1 -kernel net_ticktime 20 -boot 
> /usr/local/gemini/gdss/1.0.0/lib/app/gdss_all -config 
> /usr/local/gemini/gdss/1.0.0/../var/data/node1.config -pa 
> /usr/local/gemini/gdss/1.0.0/lib/app-patches -pz 
> /usr/local/gemini/gdss/1.0.0/lib/app -pz /usr/local/gemini/gdss/1.0.0/lib 
> -central_config /usr/local/gemini/gdss/1.0.0/etc/central.conf 
> -ticket_broker_config /usr/local/gemini/gdss/1.0.0/etc/broker.conf
>
>
> * The following is gdb and backtrace output:
> ------------------------
> [root@REDACTED data]# gdb 
> /usr/local/gemini/ert/R13B04/lib/erlang/erts-5.7.5/bin/beam.smp core.14720
> GNU gdb Fedora (6.8-27.el5)
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-redhat-linux-gnu"...
> Reading symbols from /lib64/libutil.so.1...done.
> Loaded symbols for /lib64/libutil.so.1
> Reading symbols from /lib64/libdl.so.2...done.
> Loaded symbols for /lib64/libdl.so.2
> Reading symbols from /lib64/libm.so.6...done.
> Loaded symbols for /lib64/libm.so.6
> Reading symbols from /usr/lib64/libncurses.so.5...done.
> Loaded symbols for /usr/lib64/libncurses.so.5
> Reading symbols from /lib64/libpthread.so.0...done.
> Loaded symbols for /lib64/libpthread.so.0
> Reading symbols from /lib64/librt.so.1...done.
> Loaded symbols for /lib64/librt.so.1
> Reading symbols from /lib64/libc.so.6...done.
> Loaded symbols for /lib64/libc.so.6
> Reading symbols from /lib64/ld-linux-x86-64.so.2...done.
> Loaded symbols for /lib64/ld-linux-x86-64.so.2
> Reading symbols from 
> /usr/local/gemini/ert/R13B04/lib/erlang/lib/crypto-1.6.4/priv/lib/crypto_drv.so...done.
> Loaded symbols for 
> /usr/local/gemini/ert/R13B04/lib/erlang/lib/crypto-1.6.4/priv/lib/crypto_drv.so
> Reading symbols from 
> /usr/local/gemini/ert/R13B04/openssl/lib/libcrypto.so.0.9.8...done.
> Loaded symbols for 
> /usr/local/gemini/ert/R13B04/openssl/lib/libcrypto.so.0.9.8
> Core was generated by 
> `/usr/local/gemini/ert/R13B04/lib/erlang/erts-5.7.5/bin/beam.smp -A 64 -K 
> true -'.
> Program terminated with signal 11, Segmentation fault.
> [New process 14798]
>
> snip ... snip ... snip ...
>
> #0  0x0000000000585ea8 in erts_printf_char (fn=0x5880f0 <write_ds>, 
> arg=0xb750930, c=91 '[') at common/erl_printf_format.c:840
> 840     common/erl_printf_format.c: No such file or directory.
>        in common/erl_printf_format.c
> (gdb) bt
> #0  0x0000000000585ea8 in erts_printf_char (fn=0x5880f0 <write_ds>, 
> arg=0xb750930, c=91 '[') at common/erl_printf_format.c:840
> #1  0x000000000048c6d8 in print_term (fn=0x5880f0 <write_ds>, arg=0xb750930, 
> obj=5800176, dcount=0x458f2bc8)
>    at beam/erl_printf_term.c:346
> #2  0x000000000048c740 in print_term (fn=0x5880f0 <write_ds>, arg=0xb750930, 
> obj=<value optimized out>, dcount=0x458f2bc8)
>    at beam/erl_printf_term.c:349
> #3  0x000000000048c740 in print_term (fn=0x5880f0 <write_ds>, arg=0xb750930, 
> obj=<value optimized out>, dcount=0x458f2bc8)
>    at beam/erl_printf_term.c:349
>
> snip ... snip ... snip ...
> ------------------------
>
> * And in syslog, we found:
> Jan 27 23:48:21 gds001c kernel: beam.smp[14798]: segfault at 0000000044ef3ff8 
> rip 0000000000585ea8 rsp 0000000044ef4000 error 6
>
> Please let me know, if there is anything else we have to provide.
>
> Regards,
> -- 
> Kustarto Widoyo
> Gemini Mobile Technologies
>
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