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Error handling code following a kmalloc should free the allocated data. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,f1,l; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Sage Weil <sage@newdream.net> |
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| .. | ||
| crush | ||
| addr.c | ||
| auth_none.c | ||
| auth_none.h | ||
| auth.c | ||
| auth.h | ||
| buffer.c | ||
| buffer.h | ||
| caps.c | ||
| ceph_debug.h | ||
| ceph_frag.c | ||
| ceph_frag.h | ||
| ceph_fs.c | ||
| ceph_fs.h | ||
| ceph_hash.c | ||
| ceph_hash.h | ||
| ceph_strings.c | ||
| debugfs.c | ||
| decode.h | ||
| dir.c | ||
| export.c | ||
| file.c | ||
| inode.c | ||
| ioctl.c | ||
| ioctl.h | ||
| Kconfig | ||
| Makefile | ||
| mds_client.c | ||
| mds_client.h | ||
| mdsmap.c | ||
| mdsmap.h | ||
| messenger.c | ||
| messenger.h | ||
| mon_client.c | ||
| mon_client.h | ||
| msgpool.c | ||
| msgpool.h | ||
| msgr.h | ||
| osd_client.c | ||
| osd_client.h | ||
| osdmap.c | ||
| osdmap.h | ||
| rados.h | ||
| README | ||
| snap.c | ||
| super.c | ||
| super.h | ||
| types.h | ||
| xattr.c | ||
# # The following files are shared by (and manually synchronized # between) the Ceph userland and kernel client. # # userland kernel src/include/ceph_fs.h fs/ceph/ceph_fs.h src/include/ceph_fs.cc fs/ceph/ceph_fs.c src/include/msgr.h fs/ceph/msgr.h src/include/rados.h fs/ceph/rados.h src/include/ceph_strings.cc fs/ceph/ceph_strings.c src/include/ceph_frag.h fs/ceph/ceph_frag.h src/include/ceph_frag.cc fs/ceph/ceph_frag.c src/include/ceph_hash.h fs/ceph/ceph_hash.h src/include/ceph_hash.cc fs/ceph/ceph_hash.c src/crush/crush.c fs/ceph/crush/crush.c src/crush/crush.h fs/ceph/crush/crush.h src/crush/mapper.c fs/ceph/crush/mapper.c src/crush/mapper.h fs/ceph/crush/mapper.h src/crush/hash.h fs/ceph/crush/hash.h src/crush/hash.c fs/ceph/crush/hash.c