From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757739AbYDTL3b (ORCPT ); Sun, 20 Apr 2008 07:29:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752782AbYDTL3W (ORCPT ); Sun, 20 Apr 2008 07:29:22 -0400 Received: from fg-out-1718.google.com ([72.14.220.156]:39259 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752663AbYDTL3V (ORCPT ); Sun, 20 Apr 2008 07:29:21 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject:references:in-reply-to:x-enigmail-version:content-type:content-transfer-encoding; b=gi4/rR9KCcAXDLIQhMVdZfBMAUZ7Z8qGYpYfVIKLywvikR4ElNGamf1a6M2UP8p80TJG4veugc2bbwzkyPCBhYoom1UQ1ZLnwUQIw9/PXiARQKr8eAVK9/fbAfD3gyEn3EOsaOHgD+Rp3R3MUs8rD5Uc4/PSTRh9gv7S7aibw8A= Message-ID: <480B2904.1040204@gmail.com> Date: Sun, 20 Apr 2008 13:29:08 +0200 From: Jiri Slaby User-Agent: Thunderbird 2.0.0.12 (X11/20080213) MIME-Version: 1.0 To: Andrew Morton CC: linux-kernel@vger.kernel.org, Ingo Molnar , linux-mm@kvack.org Subject: internal compiler error: SIGSEGV [Was: 2.6.25-mm1] References: <20080418014757.52fb4a4f.akpm@linux-foundation.org> In-Reply-To: <20080418014757.52fb4a4f.akpm@linux-foundation.org> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/18/2008 10:47 AM, Andrew Morton wrote: > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.25/2.6.25-mm1/ Hi, I'm not sure by what was this caused. LANG=en strace -fo strace_gcc.txt gcc -Wp,-MD,drivers/usb/class/.usblp.o.d -nostdinc -isystem /usr/lib64/gcc/x86_64-suse-linux/4.3/include -D__KERNEL__ -Iinclude -Iinclude2 -I/home/l/latest/xxx/include -include include/linux/autoconf.h -I/home/l/latest/xxx/drivers/usb/class -Idrivers/usb/class -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -O2 -fno-stack-protector -m64 -march=core2 -mno-red-zone -mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args -DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -pipe -Wno-sign-compare -fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -I/home/l/latest/xxx/include/asm-x86/mach-default -Iinclude/asm-x86/mach-default -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -Wdeclaration-after-statement -Wno-pointer-sign -DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(usblp)" -D"KBUILD_MODNAME=KBUILD_STR(usblp)" /home/l/latest/xxx/drivers/usb/class/usblp.c -S -o usblp.s /home/l/latest/xxx/drivers/usb/class/usblp.c: In function 'usblp_submit_read': /home/l/latest/xxx/drivers/usb/class/usblp.c:977: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See for instructions. strace_gcc.txt: http://www.fi.muni.cz/~xslaby/sklad/strace_gcc.txt preprocessor output available here: http://www.fi.muni.cz/~xslaby/sklad/usblp.E Reboot fixed it. It happened after few suspend/resume cycles. The preproc output differs in no way from after the reboot. Now, the strace looks like: 5341 mmap(NULL, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f362e004000 5341 mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f362df04000 5341 brk(0x1964000) = 0x1964000 5341 brk(0x194c000) = 0x194c000 5341 brk(0x196d000) = 0x196d000 5341 brk(0x195a000) = 0x195a000 5341 mmap(NULL, 143360, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f362dee1000 5341 munmap(0x7f362dee1000, 143360) = 0 5341 brk(0x1981000) = 0x1981000 5341 brk(0x196b000) = 0x196b000 5341 brk(0x1966000) = 0x1966000 5341 mmap(NULL, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f362defc000 5341 brk(0x1988000) = 0x1988000 at that sigsegv place. Some kind of random-brk gcc (gcc-4.3-30) non-readiness?