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From: "Tobin C. Harding" <me@tobin.cc>
To: Thomas Richter <tmricht@linux.ibm.com>
Cc: jeyu@kernel.org, torvalds@linux-foundation.org,
	linux-kernel@vger.kernel.org, borntraeger@de.ibm.com,
	schwidefsky@de.ibm.com, brueckner@linux.vnet.ibm.com,
	heiko.carstens@de.ibm.com, peterz@infradead.org, acme@kernel.org,
	keescook@chromium.org, stable@vger.kernel.org
Subject: Re: [PATCH v3] module: Fix display of wrong  module .text address
Date: Wed, 18 Apr 2018 17:17:24 +1000	[thread overview]
Message-ID: <20180418071724.GA6892@eros> (raw)
In-Reply-To: <20180418071436.21392-1-tmricht@linux.ibm.com>

On Wed, Apr 18, 2018 at 09:14:36AM +0200, Thomas Richter wrote:
> Reading file /proc/modules shows the correct address:
> [root@s35lp76 ~]# cat /proc/modules | egrep '^qeth_l2'
> qeth_l2 94208 1 - Live 0x000003ff80401000
> 
> and reading file /sys/module/qeth_l2/sections/.text
> [root@s35lp76 ~]# cat /sys/module/qeth_l2/sections/.text
> 0x0000000018ea8363
> displays a random address.
> 
> This breaks the perf tool which uses this address on s390
> to calculate start of .text section in memory.
> 
> Fix this by printing the correct (unhashed) address.
> 
> Thanks to Jessica Yu for helping on this.
> 
> Fixes: ef0010a30935 ("vsprintf: don't use 'restricted_pointer()' when not restricting")
> Cc: <stable@vger.kernel.org> # v4.15+
> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
> Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
> Cc: Jessica Yu <jeyu@kernel.org>
> ---

What's changed in each version please?


thanks,
Tobin.

  reply	other threads:[~2018-04-18  7:17 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-18  7:14 Thomas Richter
2018-04-18  7:17 ` Tobin C. Harding [this message]
2018-04-18  7:22   ` Thomas-Mich Richter
2018-04-18 13:21 ` Jessica Yu
2018-04-18 18:09   ` Linus Torvalds
2018-05-02  2:20 ` Kees Cook
2018-05-02  8:13   ` Thomas-Mich Richter
2018-05-02 14:20     ` Kees Cook

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