From: Alex Elder Date: Sat, 16 Feb 2013 04:10:17 +0000 (-0600) Subject: libceph: fix a osd request memory leak X-Git-Tag: v3.10-rc1~81^2~253 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=3ff5f385b1449a07372d51fb89ca94dbfb6a3be2;p=karo-tx-linux.git libceph: fix a osd request memory leak If an invalid layout is provided to ceph_osdc_new_request(), its call to calc_layout() might return an error. At that point in the function we've already allocated an osd request structure, so we need to free it (drop a reference) in the event such an error occurs. The only other value calc_layout() will return is 0, so make that explicit in the successful case. This resolves: http://tracker.ceph.com/issues/4240 Signed-off-by: Alex Elder Reviewed-by: Josh Durgin --- diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index d730dd4d8eb2..cf4e15bfe0db 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -109,7 +109,7 @@ static int calc_layout(struct ceph_vino vino, snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx", vino.ino, bno); req->r_oid_len = strlen(req->r_oid); - return r; + return 0; } /* @@ -470,8 +470,10 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc, /* calculate max write size */ r = calc_layout(vino, layout, off, plen, req, ops); - if (r < 0) + if (r < 0) { + ceph_osdc_put_request(req); return ERR_PTR(r); + } req->r_file_layout = *layout; /* keep a copy */ /* in case it differs from natural (file) alignment that