linux-kernel - Memory allocation problem with 2.6.22 after suspend/resume cycle

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-next>] [day] [month] [year] [list]

Date:	Sat, 22 Sep 2007 18:41:07 +0300
From:	"Christian P. Schmidt" <charlie@...add.de>
To:	linux-kernel@...r.kernel.org
Subject: Memory allocation problem with 2.6.22 after suspend/resume cycle

Hi all,

I'm having a strange problem, of course not reproducible. Sometimes
after a suspend (to ram) and resume cycle, the kernel will try to free
all memory. This means, all running applications are flushed to swap (as
long as it is available), caches and buffers stay at around 15MB each.

The following video (traded quality for bandwidth) shows what happens on
the way from no swap to "swapon -a" (that's the unreadable thing in the
small shell): http://digadd.de/swapping.avi

The system:
Linux dnnote 2.6.22.5 #1 SMP PREEMPT Sat Aug 25 18:39:21 AST 2007 x86_64
Intel(R) Core(TM)2 CPU T7400 @ 2.16GHz GenuineIntel GNU/Linux

A 32bit Kernel is unable to suspend/resume at all. No idea why. dmesg
shows nothing, logs show nothing. Any ideas for debugging are welcome.

Regards,
Chris
-
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/