linux-kernel - Re: [Bug 12713] Hang on resume from hibernation, apparently as result of 213d9417fec

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]

Date:	Sun, 15 Feb 2009 17:28:42 -0800
From:	Roland Dreier <rdreier@...co.com>
To:	"Michael S. Tsirkin" <m.s.tsirkin@...il.com>
Cc:	pavel@...e.cz, rjw@...k.pl, linux-pm@...ts.linux-foundation.org,
	axboe@...nel.dk,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	bugme-daemon@...zilla.kernel.org
Subject: Re: [Bug 12713] Hang on resume from hibernation, apparently as result  of 213d9417fec

 > I haven't read the code in depth, but taking running numbers and doing
 > bitwise "or"
 > on them looks a bit strange to me.
 > So here BIO_RW_SYNC is (3 | 4) = 7, that is the same as BIO_RW_FAILFAST_DEV.
 > So for example bio_failfast_dev and bio_sync are the same.

Yes, this is clearly wrong.  The fix seems to be to delete the
definition of BIO_RW_SYNC, and everywhere that breaks, replace

	1 << BIO_RW_SYNC

with

	(1 << BIO_RW_SYNCIO) | (1 << BIO_RW_UNPLUG)

 - R.
--
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/