From: Amerigo Wang <amwang@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: akpm@linux-foundation.org, Amerigo Wang <amwang@redhat.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [Patch] console: limit the range of VGACON_SOFT_SCROLLBACK_SIZE
Date: Thu, 24 Dec 2009 21:40:32 -0500 [thread overview]
Message-ID: <20091225024340.4431.59297.sendpatchset@localhost.localdomain> (raw)
BuraphaLinux reported that we will trigger a mm warning when
we CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=65536, this is because
mm cann't allocate so many pages. We should limit the range
of CONFIG_VGACON_SOFT_SCROLLBACK_SIZE, don't give a user
any chance to trigger that.
Reported-by: BuraphaLinux Server <buraphalinuxserver@gmail.com>
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: David S. Miller <davem@davemloft.net>
---
diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index fc7d9bb..8e8f18d 100644
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -37,6 +37,7 @@ config VGACON_SOFT_SCROLLBACK
config VGACON_SOFT_SCROLLBACK_SIZE
int "Scrollback Buffer Size (in KB)"
depends on VGACON_SOFT_SCROLLBACK
+ range 1 1024
default "64"
help
Enter the amount of System RAM to allocate for the scrollback
next reply other threads:[~2009-12-25 2:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-25 2:40 Amerigo Wang [this message]
2009-12-25 2:46 ` Cong Wang
2009-12-25 13:59 ` BuraphaLinux Server
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