Date: Wed, 18 Jun 2014 16:14:51 -0700 From: John-Mark Gurney <jmg@funkthat.com> To: Nathan Whitehorn <nwhitehorn@freebsd.org> Cc: freebsd-arm@freebsd.org Subject: Re: AVILA getting close! Message-ID: <20140618231451.GI31367@funkthat.com> In-Reply-To: <53A21C30.7060601@freebsd.org> References: <20140618225808.GG31367@funkthat.com> <53A21C30.7060601@freebsd.org>
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Nathan Whitehorn wrote this message on Wed, Jun 18, 2014 at 16:09 -0700: > > On 06/18/14 15:58, John-Mark Gurney wrote: > >So, w/ the recent couple of patches that alc has provided, I no longer > >receive kernel panics on my AVILA board! > > > >$ uname -a > >FreeBSD avila.funkthat.com 11.0-CURRENT FreeBSD 11.0-CURRENT #27 > >r267333:267349M: Wed Jun 11 09:57:58 PDT 2014 > >jmg@carbon.funkthat.com:/usr/obj/arm.armeb/usr/src.avila/sys/AVILA arm > >$ uptime > >12:15AM up 1 day, 15 mins, 2 users, load averages: 0.13, 0.11, 0.08 > > > >This survived a portsnap extract... This is all over NFS... > > > >Though the issue that I'm now having is that some binaries (newsyslog) > >and sometimes other binaries (awk, grep) core dump... > > > >I believe this is an issue w/ rtld, or related... If I compile newsyslog > >-static, it works fine... Otherwise I get a SIGILL, and that is > >because it jumps off into the weeds.. Though gdb on arm isn't very > >useful.. > > > >The trouble appears to be when resolving a symbol that hasn't been > >called yet... The trouble starts when newsyslog starts parsing a > >line that isn't a comment line and tries to strdup it... stepi'ing > >has me go into > >_rtld_bind_start -> > > _rtld_bind -> > > rlock_acquire -> > > thread_mask_set -> > > def_thread_set_flag (via function pointer) > > def_rlock_acquire -> > > atomic_add_acq_int > > > >Turning on rtld's debug doesn't tell me anything I didn't know already: > >"memchr" in "libc.so.7" ==> 0x2017af30 in "libc.so.7" > >"strdup" in "newsyslog" ==> 0x200cc8b0 in "libc.so.7" > >Bus error (core dumped) > > > >I've posted both a gdb log showing the stepi, and my copy of > >ld-elf.so.1 to: > >https://www.funkthat.com/~jmg/20140619/ > > > >Let me know if there is any additional information... > > > What happens if you set LD_BIND_NOW=1 in the environment first? That causes newsyslog to work. -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."
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