From: Sam Ravnborg <sam@ravnborg.org>
To: Arnaud Lacombe <lacombar@gmail.com>
Cc: Michal Marek <mmarek@suse.cz>,
linux-kbuild <linux-kbuild@vger.kernel.org>
Subject: Re: [PATCH] kbuild: fix segmentation fault in recursive dependency check
Date: Mon, 23 Aug 2010 18:51:45 +0200 [thread overview]
Message-ID: <20100823165145.GA29344@merkur.ravnborg.org> (raw)
In-Reply-To: <1282579375-12985-1-git-send-email-lacombar@gmail.com>
On Mon, Aug 23, 2010 at 12:02:55PM -0400, Arnaud Lacombe wrote:
> #0 sym_check_deps (sym=0xbb904c90) at scripts/kconfig/symbol.c:950
> 950 fprintf(stderr, "%s:%d:error: recursive dependency detected!\n",
> (gdb) bt
> #0 sym_check_deps (sym=0xbb904c90) at scripts/kconfig/symbol.c:950
> #1 0x0804b4c2 in sym_check_expr_deps (e=0xbb5ec8e0) at scripts/kconfig/symbol.c:1007
> #2 0x0804b549 in sym_check_sym_deps (sym=0xbb904c90) at scripts/kconfig/symbol.c:1032
> #3 0x0804b950 in sym_check_deps (sym=0xbb904c90) at scripts/kconfig/symbol.c:1111
> #4 0x0804b4c2 in sym_check_expr_deps (e=0xbb5e99a0) at scripts/kconfig/symbol.c:1007
> #5 0x0804b50f in sym_check_sym_deps (sym=0xbb904d30) at scripts/kconfig/symbol.c:1024
> #6 0x0804b950 in sym_check_deps (sym=0xbb904d30) at scripts/kconfig/symbol.c:1111
> #7 0x0804b4c2 in sym_check_expr_deps (e=0xbb5f1840) at scripts/kconfig/symbol.c:1007
> #8 0x0804b4a8 in sym_check_expr_deps (e=0xbb5f1830) at scripts/kconfig/symbol.c:994
> #9 0x0804b549 in sym_check_sym_deps (sym=0xbb970240) at scripts/kconfig/symbol.c:1032
> #10 0x0804b950 in sym_check_deps (sym=0xbb970240) at scripts/kconfig/symbol.c:1111
> #11 0x08052e37 in conf_parse (name=0x804a09a "\203?\020?\004z\005\b\205?\017\205?") at scripts/kconfig/zconf.tab.c:2244
> #12 0x0804a09a in main (ac=3, av=0xbfbfe004) at scripts/kconfig/conf.c:505
>
> In this case, `stack->prop' is NULL, but it may also end-up being NULL at the
> end of the loop just before. Places the check before using `prop' to catch both
> cases.
>
> This fix `scripts/kconfig/conf' segmentation fault on SH as of v2.6.36-rc2 and
> allow to fix the underlying issue.
Looks like the bug I fixed in another way:
See: http://git.kernel.org/?p=linux/kernel/git/mmarek/kbuild-2.6.git;a=commit;h=3643f849d7da5c12da589beb03c12303fe79b841
Or did you hit another bug so your patch is needed too?
Sam
next prev parent reply other threads:[~2010-08-23 16:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-23 16:02 [PATCH] kbuild: fix segmentation fault in recursive dependency check Arnaud Lacombe
2010-08-23 16:51 ` Sam Ravnborg [this message]
2010-08-23 17:02 ` Arnaud Lacombe
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