In a message from Wolfgang Denk highlighting warnings from cppcheck, the patch will address those that are correctly diagnosed. Some are false-positives:

[fs/zfs/zfs.c:937]: (error) Memory leak: l

dmu_read() allocates "l" if successful, so error-case should not free it.

[fs/zfs/zfs.c:1141]: (error) Memory leak: dnbuf

dmu_read() allocates "dnbuf" if successful, so error-case should not free it.

[fs/zfs/zfs.c:1372]: (error) Memory leak: osp

zio_read() allocates "osp" if successful, so error-case should not free it.

[fs/zfs/zfs.c:1726]: (error) Memory leak: nvlist

int_zfs_fetch_nvlist() allocates "nvlist" if successful, so error-case should not free it.

Signed-off-by: Jorgen Lundman lundman@lundman.net --- fs/zfs/zfs.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/fs/zfs/zfs.c b/fs/zfs/zfs.c index 818d3d9..fb2b3ee 100644 --- a/fs/zfs/zfs.c +++ b/fs/zfs/zfs.c @@ -736,7 +736,7 @@ zap_hash(uint64_t salt, const char *name) uint64_t crc = salt;

if (table[128] == 0) { - uint64_t *ct; + uint64_t *ct = NULL; int i, j; for (i = 0; i < 256; i++) { for (ct = table + i, *ct = i, j = 8; j > 0; j--) @@ -1060,6 +1060,7 @@ zap_lookup(dnode_end_t *zap_dnode, char *name, uint64_t *val, }

printf("unknown ZAP type\n"); + free(zapbuf); return ZFS_ERR_BAD_FS; }

@@ -1094,6 +1095,7 @@ zap_iterate(dnode_end_t *zap_dnode, return ret; } printf("unknown ZAP type\n"); + free(zapbuf); return 0; }

@@ -1865,6 +1867,7 @@ zfs_mount(device_t dev)

ubbest = malloc(sizeof(*ubbest)); if (!ubbest) { + free(ub_array); zfs_unmount(data); return 0; } @@ -1953,6 +1956,7 @@ zfs_mount(device_t dev) if (err) { printf("couldn't zio_read object directory\n"); zfs_unmount(data); + free(osp); free(ubbest); return 0; } @@ -2052,6 +2056,9 @@ zfs_open(struct zfs_file *file, const char *fsfilename)

hdrsize = SA_HDR_SIZE(((sa_hdr_phys_t *) sahdrp)); file->size = *(uint64_t *) ((char *) sahdrp + hdrsize + SA_SIZE_OFFSET); + if ((data->dnode.dn.dn_bonuslen == 0) && + (data->dnode.dn.dn_flags & DNODE_FLAG_SPILL_BLKPTR)) + free(sahdrp); } else { file->size = zfs_to_cpu64(((znode_phys_t *) DN_BONUS(&data->dnode.dn))->zp_size, data->dnode.endian); }