segfault at mal_session.c:521

[monetdb-team]

Date: 2014-08-06 15:27:17 +0200
From: @skinkie
To: MonetDB5 devs <>
Version: 11.17.21 (Jan2014-SP3)
CC: @mlkersten

Last updated: 2014-10-31 14:14:25 +0100

Comment 19966

Date: 2014-08-06 15:27:17 +0200
From: @skinkie

User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.58 Safari/537.36
Build Identifier:

I am trying to run MonetDB from monetdbd inside gdb. I copied over the commandline from ps aux and removed some arguments. I find it typical that this does not work at all, as if there is a completely different syntax used. I'll file a separate bug.

!IOException:mal_mapi.listen:operation failed: bind to stream socket port 50000 failed: Address already in use
!SyntaxException:parseError:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
!SyntaxException:parseError: ^';' expected

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff78d801d in MALreader (c=0x645680) at mal_session.c:521
521 if (r < 0 && c->fdin->eof == 0)
!IOException:mal_mapi.listen:operation failed: bind to stream socket port 50000 failed: Address already in use
!SyntaxException:parseError:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
!SyntaxException:parseError: ^';' expected

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff78d801d in MALreader (c=0x645680) at mal_session.c:521
521 if (r < 0 && c->fdin->eof == 0)

Reproducible: Always

MonetDB 5 server v11.17.22 (64-bit, 64-bit oids)
This is an unreleased version
Copyright (c) 1993-July 2008 CWI
Copyright (c) August 2008-2014 MonetDB B.V., all rights reserved
Visit http://www.monetdb.org/ for further information
Found 31.4GiB available memory, 8 available cpu cores
Libraries:
libpcre: 8.33 2013-05-28 (compiled with 8.33)
openssl: OpenSSL 1.0.1h 5 Jun 2014 (compiled with OpenSSL 1.0.1h 5 Jun 2014)
libxml2: 2.9.1 (compiled with 2.9.1)
Compiled by: skinkie@bigdata.openebs.nl (x86_64-unknown-linux-gnu)
Compilation: gcc -g -Werror -Wall -Wextra -W -Werror-implicit-function-declaration -Wpointer-arith -Wdeclaration-after-statement -Wundef -Wformat=2 -Wno-format-nonliteral -Winit-self -Winvalid-pch -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wold-style-definition -Wpacked -Wunknown-pragmas -Wvariadic-macros -fstack-protector-all -Wstack-protector -Wpacked-bitfield-compat -Wsync-nand -Wjump-misses-init -Wmissing-include-dirs -Wlogical-op -Wunreachable-code
Linking : /usr/x86_64-pc-linux-gnu/bin/ld -m elf_x86_64

Comment 19981

Date: 2014-08-06 19:05:07 +0200
From: @mlkersten

It looks like you forgot to add --dbinit="sql.start();" as an argument to the list you extract from merovingian.log

Comment 19991

Date: 2014-08-06 21:16:09 +0200
From: @skinkie

Created attachment 293
Guard reading c->fdin when it has not been allocated

(In reply to comment 1)

It looks like you forgot to add --dbinit="sql.start();" as an argument to
the list you extract from merovingian.log

Is forgetting - or not - an excuse to bail out with a segfault?

Attached file: guard_c_fdin_null-3528.diff (text/plain, 354 bytes)
Description: Guard reading c->fdin when it has not been allocated

Comment 19992

Date: 2014-08-06 21:22:23 +0200
From: @mlkersten

Indeed, for the expert user a few more defense lines could be added to the core.

thx, Martin

Comment 20370

Date: 2014-10-31 14:14:25 +0100
From: @sjoerdmullender

Oct2014 has been released.