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From: Michal Suchanek <msuchanek@suse.de>
To: linux-modules@vger.kernel.org
Cc: Lucas De Marchi <lucas.de.marchi@gmail.com>,
	Jean Delvare <jdelvare@suse.de>,
	Michal Suchanek <msuchanek@suse.de>
Subject: [PATCH v3 0/3] Fix dependency file corruption with parallel depmod invocation
Date: Mon, 17 Dec 2018 23:46:26 +0100	[thread overview]
Message-ID: <20181217224629.22687-1-msuchanek@suse.de> (raw)
In-Reply-To: <20181207154557.5865-1-msuchanek@suse.de>

The files produced by depmod may be corrupted if multiple depmod processes
running in parallel try to update them. Since there is nothing stopping the
user running depmod in parallel this looks like a bug in depmod.

v3:
 - remove superfluous whitespace, open flag, and duplicate nul termination

v2:
 - split into separate patches, add gcc warning fix

Michal Suchanek (3):
  depmod: prevent module dependency files missing during depmod
    invocation.
  depmod: prevent module dependency files corruption due to parallel
    invocation.
  depmod: shut up gcc insufficinet buffer warning.

 tools/depmod.c | 61 ++++++++++++++++++++++++++++++++++----------------
 1 file changed, 42 insertions(+), 19 deletions(-)

-- 
2.19.2


  parent reply	other threads:[~2018-12-17 22:46 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-07 15:45 [PATCH] depmod: Prevent module dependency files corruption due to parallel invocation Michal Suchanek
2018-12-10 21:29 ` [PATCH v2 0/3] Fix dependency file corruption with parallel depmod invocation Michal Suchanek
2018-12-10 21:29   ` [PATCH v2 1/3] depmod: prevent module dependency files missing during " Michal Suchanek
2018-12-10 21:29   ` [PATCH v2 2/3] depmod: prevent module dependency files corruption due to parallel invocation Michal Suchanek
2018-12-17 18:10     ` Lucas De Marchi
2018-12-17 22:07       ` Michal Suchánek
2018-12-18  6:47         ` Yauheni Kaliuta
2018-12-18 10:26           ` Michal Suchánek
2018-12-10 21:29   ` [PATCH v2 3/3] depmod: shut up gcc insufficinet buffer warning Michal Suchanek
2018-12-17 18:19     ` Lucas De Marchi
2018-12-17 22:46 ` Michal Suchanek [this message]
2018-12-17 22:46   ` [PATCH v3 1/3] depmod: prevent module dependency files missing during depmod invocation Michal Suchanek
2018-12-17 22:46   ` [PATCH v3 2/3] depmod: prevent module dependency files corruption due to parallel invocation Michal Suchanek
2018-12-17 22:46   ` [PATCH v3 3/3] depmod: shut up gcc insufficinet buffer warning Michal Suchanek

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