Apache Error of $r->read failed to read

[Chris Faust]

Hi,   We have been having some problems where all of a sudden apache will start logging the error of:   [error] mod_perl: $r->read failed to read   Multiple times (100s in less then 10th of a sec), often it will get to the point where load on the machine goes through the roof and apache has problems responding and it appears to be the number of requests that are happening as limits that shouldn't be reached like DB connections and apache processes are maxing out during non-peak hours.   From what we could see it looked like someone outside was sending all kind of linefeeds and whatnot within the URL which was documented in the Apache 45 release which we did update - now we are down to getting the above mod_perl error and shortly after that starts all hell breaks loose.   Nowhere in our code do we directly call the "read" method nor can I find anything relating to the error so I'm a little lost on what I can do.   Any ideas?   Thanks -Chris   RH Linux 8 Apache 2.0.45 mod_perl 1.99.05   -------------8<---------- Start Bug Report ------------8<---------- 1. Problem Description:   See Above   2. Used Components and their Configuration:   *** using /usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi/Apache/BuildConfig.pm *** Makefile.PL options:   MP_APXS        => /usr/sbin/apxs   MP_GENERATE_XS => 1   MP_LIBNAME     => mod_perl   MP_USE_DSO     => 1   MP_USE_STATIC  => 1   *** The httpd binary was not found   *** /usr/bin/perl -V Summary of my perl5 (revision 5.0 version 8 subversion 0) configuration:   Platform:     osname=linux, osvers=2.4.18-11smp, archname=i386-linux-thread-multi     uname='linux daffy.perf.redhat.com 2.4.18-11smp #1 smp thu aug 15 06:41:59 edt 2002 i686 i686 i386 gnulinux '     config_args='-des -Doptimize=-O2 -march=i386 -mcpu=i686 -Dmyhostname=localhost [EMAIL PROTECTED] -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dinstallprefix=/usr -Dprefix=/usr -Darchname=i386-linux -Dvendorprefix=/usr -Dsiteprefix=/usr -Duseshrplib -Dusethreads -Duseithreads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Ui_ndbm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinperl -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr'     hint=recommended, useposix=true, d_sigaction=define     usethreads=define use5005threads=undef useithreads=define usemultiplicity=define     useperlio=define d_sfio=undef uselargefiles=define usesocks=undef     use64bitint=undef use64bitall=undef uselongdouble=undef     usemymalloc=n, bincompat5005=undef   Compiler:     cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm',     optimize='-O2 -march=i386 -mcpu=i686',     cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -I/usr/include/gdbm'     ccversion='', gccversion='3.2 20020822 (Red Hat Linux Rawhide 3.2-5)', gccosandvers=''     intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234     d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12     ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8     alignbytes=4, prototype=define   Linker and Libraries:     ld='gcc', ldflags =' -L/usr/local/lib'     libpth=/usr/local/lib /lib /usr/lib     libs=-lnsl -lgdbm -ldb -ldl -lm -lpthread -lc -lcrypt -lutil     perllibs=-lnsl -ldl -lm -lpthread -lc -lcrypt -lutil     libc=/lib/libc-2.2.92.so, so=so, useshrplib=true, libperl=libperl.so     gnulibc_version='2.2.92'   Dynamic Linking:     dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic -Wl,-rpath,/usr/lib/perl5/5.8.0/i386-linux-thread-multi/CORE'     cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'   Characteristics of this binary (from libperl):   Compile-time options: MULTIPLICITY USE_ITHREADS USE_LARGE_FILES PERL_IMPLICIT_CONTEXT   Built under linux   Compiled at Sep  1 2002 23:56:49   %ENV:     PERL_LWP_USE_HTTP_10="1"   @INC:     /usr/lib/perl5/5.8.0/i386-linux-thread-multi     /usr/lib/perl5/5.8.0     /usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi     /usr/lib/perl5/site_perl/5.8.0     /usr/lib/perl5/site_perl     /usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi     /usr/lib/perl5/vendor_perl/5.8.0     /usr/lib/perl5/vendor_perl     .   3. This is the core dump trace: (if you get a core dump):     [CORE TRACE COMES HERE]   This report was generated by -e on Wed May 28 19:16:35 2003 GMT.   -------------8<---------- End Bug Report --------------8<----------