From: Peter Wu <lekensteyn@gmail.com>
To: Al Viro <viro@zeniv.linux.org.uk>, linux-kernel@vger.kernel.org
Subject: [REGRESSION] coredumps truncated after "new helper: dump_align()"
Date: Fri, 15 Nov 2013 15:26:10 +0100 [thread overview]
Message-ID: <11835033.kIc1RH0rS1@al> (raw)
Hi Al,
Somewhere in the merge window of 3.13, coredumps appear truncated.
Instead of 319488 bytes, I get 868 bytes (tested with x86_64 only).
The latest Linus' master (v3.12-9579-g049ffa8) is still affected.
Bisection leads to:
commit 22a8cb8248ba5d340307ba72432253b1dbdb5cf7
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue Oct 8 11:05:01 2013 -0400
new helper: dump_align()
dump_skip to given alignment...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
:040000 040000 880920de653955485453c8cc11045bb09e2934f7 f8b348d32b59ae7a16cbc3eb2a6319f4df0210eb M arch
:040000 040000 eaeffe2378806e95d23b3f3a9dc0fa8f078d6052 88866abde93296a05b4adda869280bc05403936f M fs
:040000 040000 218263e01dd7473998c54a5a68ed5ae072854d24 ff531dce919862b662fef19a9a049f0de3db38ce M include
I first noticed this bug on my laptop (v3.12-7033-g42a2d92) and
reproduced this bug in a QEMU virtual machine too. If you want, I
can also provide the git bisect script that starts QEMU and tests
the serial output. That allows a kernel to be verified in two seconds
(minus build times).
Regards,
Peter
next reply other threads:[~2013-11-15 14:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-15 14:26 Peter Wu [this message]
2013-11-15 20:38 ` [REGRESSION] coredumps truncated after "new helper: dump_align()" Al Viro
2013-11-15 20:57 ` Joe Perches
2013-11-15 21:34 ` Peter Wu
2013-11-16 0:04 ` Al Viro
2013-11-17 6:19 ` Al Viro
2013-11-17 9:59 ` Peter Wu
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