linux-kernel - Re: Latest git oopses during boot

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87hcgkzbry.fsf@basilikum.skogtun.org>
Date:	Thu, 07 Feb 2008 22:39:45 +0100
From:	Harald Arnesen <skogtun.harald@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Harald Arnesen <skogtun.linux@...il.com>,
	FUJITA Tomonori <tomof@....org>, akpm@...ux-foundation.org,
	matthew@....cx, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org, fujita.tomonori@....ntt.co.jp
Subject: Re: Latest git oopses during boot

Linus Torvalds <torvalds@...ux-foundation.org> writes:

> On Thu, 7 Feb 2008, Harald Arnesen wrote:
>> >
>> > Can you do a
>> >
>> >         make drivers/scsi/advansys.lst
>> >
>> > and see what it should be?
>> 
>> Anyway, here it is, as an attachment.
>
> Ok, I was wrong. The code really *does* compile to that insane
>
> 	a3 14 00 00 00          mov    %eax,0x14
>
> by your compiler.
>
> That's the
>
> 	asc_dvc_varp->overrun_buf = kzalloc(ASC_OVERRUN_BSIZE, GFP_KERNEL);
>
> thing, and gcc seems to have decided that it can statically prove that 
> asc_dvc_varp is NULL.
>
> Quite frankly, I don't see that being true. But you have some patches in 
> your tree that I haven't followed, so.. Are you sure the patches applied 
> to the right spot? The patch I saw added that kzalloc() to the _end_ of 
> the function (long after asc_dvc_varp was initialized), maybe that one got 
> mis-applied?
>
> Or maybe your compiler version is simply totally broken.
>
> 			Linus

I'll try applying the patch to a freshly downloaded git-tree.

Shall I try another compiler? I have at least these two:

gcc version 3.4.6 (Ubuntu 3.4.6-6ubuntu2)
gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)

in addition to the self-compiled 4.2.3 I used for the tests.
-- 
Hilsen Harald.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/