All of lore.kernel.org
 help / color / mirror / Atom feed
From: Eric Biggers <ebiggers3@gmail.com>
To: syzbot
	<bot+e01a53d277c86c4e61e7c84ec83432ed395c7df8@syzkaller.appspotmail.com>
Cc: davem@davemloft.net, herbert@gondor.apana.org.au, hpa@zytor.com,
	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
	syzkaller-bugs@googlegroups.com, tglx@linutronix.de,
	x86@kernel.org
Subject: Re: WARNING: kernel stack regs has bad 'bp' value (2)
Date: Thu, 30 Nov 2017 01:17:24 -0800	[thread overview]
Message-ID: <20171130091724.GC5451@zzz.localdomain> (raw)
In-Reply-To: <001a113f2cd26f3532055f0f4a79@google.com>

On Tue, Nov 28, 2017 at 10:36:01AM -0800, syzbot wrote:
> WARNING: kernel stack regs at ffff8801c1e5f468 in syzkaller196611:6199 has
> bad 'bp' value 0000000000000001
> unwind stack type:0 next_sp:          (null) mask:0x6 graph_idx:0
> ffff8801db4075a8: ffff8801db407630 (0xffff8801db407630)
> ffff8801db4075b0: ffffffff8128a84e (__save_stack_trace+0x6e/0xd0)
> ffff8801db4075b8: 0000000000000000 ...
> ffff8801db4075c0: ffff8801c1e58000 (0xffff8801c1e58000)
> ffff8801db4075c8: ffff8801c1e60000 (0xffff8801c1e60000)
> ffff8801db4075d0: 0000000000000000 ...
> ffff8801db4075d8: 0000000000000006 (0x6)
> ffff8801db4075e0: ffff8801c1e4e000 (0xffff8801c1e4e000)
> ffff8801db4075e8: 0000010100000000 (0x10100000000)
> ffff8801db4075f0: 0000000000000000 ...
> ffff8801db4075f8: ffff8801db4075a8 (0xffff8801db4075a8)
> ffff8801db407600: ffffffff8134ff7d (__twofish_enc_blk_3way+0x1b1d/0x1b30)

Looks like the x86_64 "3 way" version of Twofish (twofish-x86_64-asm_64-3way.S)
needs to be updated to not use %rbp.

Eric

  reply	other threads:[~2017-11-30  9:17 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-28 18:36 WARNING: kernel stack regs has bad 'bp' value (2) syzbot
2017-11-28 18:36 ` syzbot
2017-11-30  9:17 ` Eric Biggers [this message]
2017-11-30  9:17   ` Eric Biggers
2017-12-27 18:29   ` Dmitry Vyukov
2017-12-27 18:29     ` Dmitry Vyukov
2017-12-28  7:30     ` Dmitry Vyukov
2017-12-28  7:30       ` Dmitry Vyukov
2017-12-19  0:40 ` [PATCH] crypto: x86/twofish-3way - Fix %rbp usage Eric Biggers
2017-12-19  7:54   ` Ingo Molnar
2017-12-19  8:04     ` Juergen Gross
2017-12-19 14:37       ` David Laight
2017-12-19 17:35     ` Ingo Molnar
2017-12-19 22:37   ` Josh Poimboeuf
2017-12-28  7:02   ` Herbert Xu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20171130091724.GC5451@zzz.localdomain \
    --to=ebiggers3@gmail.com \
    --cc=bot+e01a53d277c86c4e61e7c84ec83432ed395c7df8@syzkaller.appspotmail.com \
    --cc=davem@davemloft.net \
    --cc=herbert@gondor.apana.org.au \
    --cc=hpa@zytor.com \
    --cc=linux-crypto@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=syzkaller-bugs@googlegroups.com \
    --cc=tglx@linutronix.de \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.