Additional info on modpost segfault
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From: alan on 3 Jun 2010 23:20 Missed adding the actual segfault message: LD drivers/usb/built-in.o LD drivers/built-in.o LD vmlinux.o MODPOST vmlinux.o /bin/sh: line 1: 20665 Segmentation fault (core dumped) scripts/mod/modpost -o /home/alan/GitTrees/linux-2.6-mid-ref/Module.symvers -S vmlinux.o make[1]: *** [vmlinux.o] Error 139 make: *** [vmlinux.o] Error 2 I have looked at the gcc 4.4.4 changelog and I can't see anything that should cause this. -- Truth is stranger than fiction because fiction has to make sense. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Américo Wang on 4 Jun 2010 00:50 On Thu, Jun 03, 2010 at 08:10:30PM -0700, alan wrote: >Missed adding the actual segfault message: > > LD drivers/usb/built-in.o > LD drivers/built-in.o > LD vmlinux.o > MODPOST vmlinux.o >/bin/sh: line 1: 20665 Segmentation fault (core dumped) >scripts/mod/modpost -o >/home/alan/GitTrees/linux-2.6-mid-ref/Module.symvers -S vmlinux.o >make[1]: *** [vmlinux.o] Error 139 >make: *** [vmlinux.o] Error 2 > >I have looked at the gcc 4.4.4 changelog and I can't see anything >that should cause this. > Hmm, you need to find which program segfaults here. What does 'file the_core_file_your_got' say? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Michal Marek on 4 Jun 2010 03:30 On 4.6.2010 06:51, Am�rico Wang wrote: > On Thu, Jun 03, 2010 at 08:10:30PM -0700, alan wrote: >> Missed adding the actual segfault message: >> >> LD drivers/usb/built-in.o >> LD drivers/built-in.o >> LD vmlinux.o >> MODPOST vmlinux.o >> /bin/sh: line 1: 20665 Segmentation fault (core dumped) >> scripts/mod/modpost -o >> /home/alan/GitTrees/linux-2.6-mid-ref/Module.symvers -S vmlinux.o >> make[1]: *** [vmlinux.o] Error 139 >> make: *** [vmlinux.o] Error 2 >> >> I have looked at the gcc 4.4.4 changelog and I can't see anything >> that should cause this. >> > > Hmm, you need to find which program segfaults here. It's the modpost command run on vmlinux.o. Alan, can you try $ gdb --args scripts/mod/modpost -o Module.symvers -S vmlinux.o (gdb) r (wait for the segfault) (gdb) bt full and post the backtrace? Thanks, Michal -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Alan on 7 Jun 2010 13:00 On Fri, 2010-06-04 at 09:22 +0200, Michal Marek wrote: > On 4.6.2010 06:51, Américo Wang wrote: > > On Thu, Jun 03, 2010 at 08:10:30PM -0700, alan wrote: > >> Missed adding the actual segfault message: > >> > >> LD drivers/usb/built-in.o > >> LD drivers/built-in.o > >> LD vmlinux.o > >> MODPOST vmlinux.o > >> /bin/sh: line 1: 20665 Segmentation fault (core dumped) > >> scripts/mod/modpost -o > >> /home/alan/GitTrees/linux-2.6-mid-ref/Module.symvers -S vmlinux.o > >> make[1]: *** [vmlinux.o] Error 139 > >> make: *** [vmlinux.o] Error 2 > >> > >> I have looked at the gcc 4.4.4 changelog and I can't see anything > >> that should cause this. > >> > > > > Hmm, you need to find which program segfaults here. > > It's the modpost command run on vmlinux.o. Alan, can you try > $ gdb --args scripts/mod/modpost -o Module.symvers -S vmlinux.o > (gdb) r > (wait for the segfault) > (gdb) bt full > > and post the backtrace? Don't know if this will help much. This GDB was configured as "x86_64-redhat-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /home/alan/GitTrees/linux-2.6-mid-ref/scripts/mod/modpost...(no debugging symbols found)...done. (gdb) r Starting program: /home/alan/GitTrees/linux-2.6-mid-ref/scripts/mod/modpost -o Module.symvers -S vmlinux.o Program received signal SIGSEGV, Segmentation fault. 0x0000000000403711 in main () (gdb) bt full #0 0x0000000000403711 in main () No symbol table info available. Trying to get it to compile with debugging info. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Américo Wang on 8 Jun 2010 01:50
On Mon, Jun 07, 2010 at 09:59:39AM -0700, Alan wrote: >On Fri, 2010-06-04 at 09:22 +0200, Michal Marek wrote: >> On 4.6.2010 06:51, Américo Wang wrote: >> > On Thu, Jun 03, 2010 at 08:10:30PM -0700, alan wrote: >> >> Missed adding the actual segfault message: >> >> >> >> LD drivers/usb/built-in.o >> >> LD drivers/built-in.o >> >> LD vmlinux.o >> >> MODPOST vmlinux.o >> >> /bin/sh: line 1: 20665 Segmentation fault (core dumped) >> >> scripts/mod/modpost -o >> >> /home/alan/GitTrees/linux-2.6-mid-ref/Module.symvers -S vmlinux.o >> >> make[1]: *** [vmlinux.o] Error 139 >> >> make: *** [vmlinux.o] Error 2 >> >> >> >> I have looked at the gcc 4.4.4 changelog and I can't see anything >> >> that should cause this. >> >> >> > >> > Hmm, you need to find which program segfaults here. >> >> It's the modpost command run on vmlinux.o. Alan, can you try >> $ gdb --args scripts/mod/modpost -o Module.symvers -S vmlinux.o >> (gdb) r >> (wait for the segfault) >> (gdb) bt full >> >> and post the backtrace? > >Don't know if this will help much. > >This GDB was configured as "x86_64-redhat-linux-gnu". >For bug reporting instructions, please see: ><http://www.gnu.org/software/gdb/bugs/>... >Reading symbols >from /home/alan/GitTrees/linux-2.6-mid-ref/scripts/mod/modpost...(no >debugging symbols found)...done. >(gdb) r >Starting >program: /home/alan/GitTrees/linux-2.6-mid-ref/scripts/mod/modpost -o >Module.symvers -S vmlinux.o > >Program received signal SIGSEGV, Segmentation fault. >0x0000000000403711 in main () >(gdb) bt full >#0 0x0000000000403711 in main () >No symbol table info available. > >Trying to get it to compile with debugging info. > Try to append "-g" to HOSTCFLAGS in the top Makefile. ;) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |