This is a note to let you know that I've just added the patch titled
libceph: potential NULL dereference in ceph_osdc_handle_map()
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
libceph-potential-null-dereference-in-ceph_osdc_handle_map.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b72e19b9225d4297a18715b0998093d843d170fa Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Thu, 15 Aug 2013 08:52:48 +0300
Subject: libceph: potential NULL dereference in ceph_osdc_handle_map()
From: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
commit b72e19b9225d4297a18715b0998093d843d170fa upstream.
There are two places where we read "nr_maps" if both of them are set to
zero then we would hit a NULL dereference here.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Reviewed-by: Sage Weil <sage@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/ceph/osd_client.c | 2 ++
1 file changed, 2 insertions(+)
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1786,6 +1786,8 @@ void ceph_osdc_handle_map(struct ceph_os
nr_maps--;
}
+ if (!osdc->osdmap)
+ goto bad;
done:
downgrade_write(&osdc->map_sem);
ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);
Patches currently in stable-queue which might be from dan.carpenter@xxxxxxxxxx are
queue-3.10/libceph-fix-error-handling-in-handle_reply.patch
queue-3.10/libceph-potential-null-dereference-in-ceph_osdc_handle_map.patch
queue-3.10/libceph-create_singlethread_workqueue-doesn-t-return-err_ptrs.patch
queue-3.10/ceph-cleanup-types-in-striped_read.patch
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