Messages in this thread | | | Date | Wed, 19 Sep 2007 00:38:48 +0200 | From | Gabriel C <> | Subject | Re: 2.6.23-rc6-mm1 |
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Sam Ravnborg wrote: > On Tue, Sep 18, 2007 at 03:42:58PM -0400, Miles Lane wrote: >> On 9/18/07, Sam Ravnborg <sam@ravnborg.org> wrote: >>> Hi Miles. >>> On Tue, Sep 18, 2007 at 11:27:23AM -0400, Miles Lane wrote: >>>> Selecting Help for "Subarchitecture Type" causes "make menuconfig" to >>>> crash, and the bash display settings have to be reset. >>> Not reproduceable here. >>> But I noticed that we pass a null pointer to a vsprintf function which >>> in the cases you pointed out printed a (null) at my system. >>> Could you plase try if attached patch fix your system. >> Sorry, it still crashes. I am running Ubuntu pre-6.10 (Gutsy -- the >> development version of the distro). Maybe I should try "make >> mrproper" first? > > make mrproper should not do any difference here. > I rather think you hit some ncurses bug. > > If you could add '-g' to HOSTCFLAGS in top-level Makefile > and then do: > rm scripts/kconfig/mconf.o scripts/kconfig/mconf > make menuconfig > > (to build mconf and to check that the error is still reproduceable). > And then run it in a debugger like this: > gdb scripts/kconfig/mconf > run arch/x86_64/Kconfig > ^^^^^^ replace with your actual arch > > Provoke the error and get a back-trace with 'bt'.
Hi Sam,
I can reproduce this bug on Frugalware Linux.
Here the bt:
Program received signal SIGSEGV, Segmentation fault. 0xb7dc4143 in strlen () from /lib/libc.so.6 (gdb) bt #0 0xb7dc4143 in strlen () from /lib/libc.so.6 #1 0x0804fd60 in str_append (gs=0xbfe4f6e8, s=0x0) at scripts/kconfig/util.c:87 #2 0x0804e0cb in expr_print (e=0x8e22df8, fn=0x804fda0 <expr_print_gstr_helper>, data=0xbfe4f6e8, prevtoken=0) at scripts/kconfig/expr.c:1037 #3 0x0804e1e7 in expr_gstr_print (e=0x8e22df8, gs=0xbfe4f6e8) at scripts/kconfig/expr.c:1099 #4 0x0804a07e in get_symbol_str (r=0xbfe4f6e8, sym=0x8b54ee8) at scripts/kconfig/mconf.c:334 #5 0x0804a363 in show_help (menu=0x8b54f88) at scripts/kconfig/mconf.c:738 #6 0x0804acec in conf (menu=0x8b69480) at scripts/kconfig/mconf.c:781 #7 0x0804a971 in conf (menu=0x8063c40) at scripts/kconfig/mconf.c:703 #8 0x0804af8a in main (ac=Cannot access memory at address 0x0 ) at scripts/kconfig/mconf.c:917
Looks somewhat strange -> http://194.231.229.228/menuconfig.png
PS: Is without the patch you posted , I'll try with in a bit
> > Thanks, > Sam
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