linux-kernel - [PATCH v3 09/21] vmcore: modify vmcore clean-up function to free buffer on 2nd kernel

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]

Message-ID: <20130316040137.15064.72196.stgit@localhost6.localdomain6>
Date:	Sat, 16 Mar 2013 13:01:37 +0900
From:	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
To:	vgoyal@...hat.com, ebiederm@...ssion.com, cpw@....com,
	kumagai-atsushi@....nes.nec.co.jp, lisa.mitchell@...com,
	heiko.carstens@...ibm.com, akpm@...ux-foundation.org
Cc:	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	zhangyanfei@...fujitsu.com
Subject: [PATCH v3 09/21] vmcore: modify vmcore clean-up function to free
 buffer on 2nd kernel

If flag MEM_TYPE_CURRENT_KERNEL is set, the object is copied in some
buffer on the 2nd kernel, so clean-up funciton needs to free it.

Signed-off-by: HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
---

 fs/proc/vmcore.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 766e75f..b85ba32 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -940,6 +940,10 @@ void vmcore_cleanup(void)
 		struct vmcore *m;
 
 		m = list_entry(pos, struct vmcore, list);
+
+		if (m->flag & MEM_TYPE_CURRENT_KERNEL)
+			free_pages((unsigned long)m->buf, get_order(m->size));
+
 		list_del(&m->list);
 		kfree(m);
 	}

--
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/