Re: sparse segfault in kernel -mm tree

[Randy Dunlap <rdunlap@xenotime.net>]

On Tue, 6 Mar 2007 14:28:24 -0800 Christopher Li wrote:

> Here is my version base on your email.
> 
> I need to change the gcc include path though. But it does not crash on me.
> 
> I did not get crash on allmodconfig either.

gdb backtrace of sparse segfault:


(gdb) set args vioc_prov.i
(gdb) run
Starting program: /home/rddunlap/bin/sparse vioc_prov.i

Program received signal SIGSEGV, Segmentation fault.
0x000000000040fd63 in expand_expression (expr=<value optimized out>)
    at expand.c:875
875                     if (a && a->ctype->bit_size && bit_offset(a) == bit_offset(b)) {
(gdb) bt
#0  0x000000000040fd63 in expand_expression (expr=<value optimized out>)
    at expand.c:875
#1  0x00000000004105a9 in expand_symbol (sym=<value optimized out>)
    at expand.c:993
#2  0x0000000000404581 in check_symbols (list=<value optimized out>)
    at sparse.c:265
#3  0x000000000040492a in main (argc=<value optimized out>, 
    argv=<value optimized out>) at sparse.c:280
(gdb) 



> Chris
> 
> On 3/6/07, Randy Dunlap <rdunlap@xenotime.net> wrote:
> > On Tue, 06 Mar 2007 13:19:37 -0500 Pavel Roskin wrote:
> > OK, that produced a large .i file and running:
> >   sparse vioc_provision.i
> > does reproduce the segfault, so now I am cutting down the size of
> > the .i file, then I'll send it in.


---
~Randy
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