On Tue, 8 Mar 2016, Mark Valites wrote: > On 03/08/2016 02:07 PM, Benjamin Coddington wrote: > > > Before the first 'continue' use 'handle SIG37 nostop'.. > > I get a segfault that way: > > GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7 > Copyright (C) 2013 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". > For bug reporting instructions, please see: > <http://www.gnu.org/software/gdb/bugs/>. > Attaching to process 473 > Reading symbols from /usr/sbin/rpc.gssd...Reading symbols from > /usr/lib/debug/usr/sbin/rpc.gssd.debug...done. > done. > Reading symbols from /lib64/libtirpc.so.1...Reading symbols from > /lib64/libtirpc.so.1...(no debugging symbols found)...done. > (no debugging symbols found)...done. > Loaded symbols for /lib64/libtirpc.so.1 > Reading symbols from /lib64/libgssapi_krb5.so.2...Reading symbols from > /usr/lib/debug/usr/lib64/libgssapi_krb5.so.2.2.debug...done. > done. > Loaded symbols for /lib64/libgssapi_krb5.so.2 > Reading symbols from /lib64/libkrb5.so.3...Reading symbols from > /usr/lib/debug/usr/lib64/libkrb5.so.3.3.debug...done. > done. > Loaded symbols for /lib64/libkrb5.so.3 > Reading symbols from /lib64/libk5crypto.so.3...Reading symbols from > /usr/lib/debug/usr/lib64/libk5crypto.so.3.1.debug...done. > done. > Loaded symbols for /lib64/libk5crypto.so.3 > Reading symbols from /lib64/libcom_err.so.2...Reading symbols from > /usr/lib/debug/usr/lib64/libcom_err.so.2.1.debug...done. > done. > Loaded symbols for /lib64/libcom_err.so.2 > Reading symbols from /lib64/libc.so.6...Reading symbols from > /usr/lib/debug/usr/lib64/libc-2.17.so.debug...done. > done. > Loaded symbols for /lib64/libc.so.6 > Reading symbols from /lib64/libnsl.so.1...Reading symbols from > /usr/lib/debug/usr/lib64/libnsl-2.17.so.debug...done. > done. > Loaded symbols for /lib64/libnsl.so.1 > Reading symbols from /lib64/libpthread.so.0...Reading symbols from > /usr/lib/debug/usr/lib64/libpthread-2.17.so.debug...done. > done. > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/lib64/libthread_db.so.1". > Loaded symbols for /lib64/libpthread.so.0 > Reading symbols from /lib64/libkrb5support.so.0...Reading symbols from > /usr/lib/debug/usr/lib64/libkrb5support.so.0.1.debug...done. > done. > Loaded symbols for /lib64/libkrb5support.so.0 > Reading symbols from /lib64/libdl.so.2...Reading symbols from > /usr/lib/debug/usr/lib64/libdl-2.17.so.debug...done. > done. > Loaded symbols for /lib64/libdl.so.2 > Reading symbols from /lib64/libkeyutils.so.1...Reading symbols from > /usr/lib/debug/usr/lib64/libkeyutils.so.1.5.debug...done. > done. > Loaded symbols for /lib64/libkeyutils.so.1 > Reading symbols from /lib64/libresolv.so.2...Reading symbols from > /usr/lib/debug/usr/lib64/libresolv-2.17.so.debug...done. > done. > Loaded symbols for /lib64/libresolv.so.2 > Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from > /usr/lib/debug/usr/lib64/ld-2.17.so.debug...done. > done. > Loaded symbols for /lib64/ld-linux-x86-64.so.2 > Reading symbols from /lib64/libselinux.so.1...Reading symbols from > /usr/lib/debug/usr/lib64/libselinux.so.1.debug...done. > done. > Loaded symbols for /lib64/libselinux.so.1 > Reading symbols from /lib64/libpcre.so.1...Reading symbols from > /lib64/libpcre.so.1...(no debugging symbols found)...done. > (no debugging symbols found)...done. > Loaded symbols for /lib64/libpcre.so.1 > Reading symbols from /lib64/liblzma.so.5...Reading symbols from > /lib64/liblzma.so.5...(no debugging symbols found)...done. > (no debugging symbols found)...done. > Loaded symbols for /lib64/liblzma.so.5 > Reading symbols from /usr/lib64/gssproxy/proxymech.so...Reading symbols from > /usr/lib/debug/usr/lib64/gssproxy/proxymech.so.debug...done. > done. > Loaded symbols for /usr/lib64/gssproxy/proxymech.so > Reading symbols from /lib64/libgssrpc.so.4...Reading symbols from > /usr/lib/debug/usr/lib64/libgssrpc.so.4.2.debug...done. > done. > Loaded symbols for /lib64/libgssrpc.so.4 > 0x00007ff64f5a6be9 in __GI_ppoll (fds=fds@entry=0x7ff6518b8b50, > nfds=nfds@entry=1024, timeout=<optimized out>, timeout@entry=0x0, > sigmask=sigmask@entry=0x7ffce9f91570) > at ../sysdeps/unix/sysv/linux/ppoll.c:51 > 51 result = INLINE_SYSCALL (ppoll, 5, fds, nfds, timeout, sigmask, > _NSIG / 8); > Missing separate debuginfos, use: debuginfo-install > libtirpc-0.2.4-0.6.el7.x86_64 pcre-8.32-15.el7.x86_64 > xz-libs-5.1.2-12alpha.el7.x86_64 > (gdb) handle SIG37 nostop > Signal Stop Print Pass to program Description > SIG37 No Yes Yes Real-time event 37 > (gdb) continue > Continuing. > > Program received signal SIG37, Real-time event 37. > > Program received signal SIG37, Real-time event 37. > > Program received signal SIG37, Real-time event 37. > > Program received signal SIG37, Real-time event 37. > > Program received signal SIG37, Real-time event 37. > > Program received signal SIGSEGV, Segmentation fault. > __strcmp_ssse3 () at ../sysdeps/x86_64/strcmp.S:212 > 212 movlpd (%rdi), %xmm1 > (gdb) continue > Continuing. That's where we want the backtrace; that's when you should do 'bt'. Feel free to leave out everything else. I think these SIG37s are somehow the DNOTIFY_SIGNAL, though they should be SIG35 (SIGRTMIN + 3), not 37. Ben -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
