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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-05 16:09:56 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-10-05 16:09:56 -0700
commitb98d6cb80b0dc44e1d3382bc8c530eaa80ad5b6c (patch)
treeeeb2c0e2f7e4ddff095bc8cb77534bd893517944
parent3830711f3e93b056e3e3597f2b39da2df4636e0b (diff)
parent5d07384a666d4b2f781dc056bfeec2c27fbdf383 (diff)
downloadlinux-stericsson-b98d6cb80b0dc44e1d3382bc8c530eaa80ad5b6c.tar.gz
Merge tag 'for-4.19/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Mike writes: "device mapper fixes - Fix a DM thinp __udivdi3 undefined on 32-bit bug introduced during 4.19 merge window. - Fix leak and dangling pointer in DM multipath's scsi_dh related code. - A couple stable@ fixes for DM cache's resize support. - A DM raid fix to remove "const" from decipher_sync_action()'s return type." * tag 'for-4.19/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm cache: fix resize crash if user doesn't reload cache table dm cache metadata: ignore hints array being too small during resize dm raid: remove bogus const from decipher_sync_action() return type dm mpath: fix attached_handler_name leak and dangling hw_handler_name pointer dm thin metadata: fix __udivdi3 undefined on 32-bit
-rw-r--r--drivers/md/dm-cache-metadata.c4
-rw-r--r--drivers/md/dm-cache-target.c9
-rw-r--r--drivers/md/dm-mpath.c14
-rw-r--r--drivers/md/dm-raid.c2
-rw-r--r--drivers/md/dm-thin-metadata.c6
5 files changed, 20 insertions, 15 deletions
diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c
index 69dddeab124c..5936de71883f 100644
--- a/drivers/md/dm-cache-metadata.c
+++ b/drivers/md/dm-cache-metadata.c
@@ -1455,8 +1455,8 @@ static int __load_mappings(struct dm_cache_metadata *cmd,
if (hints_valid) {
r = dm_array_cursor_next(&cmd->hint_cursor);
if (r) {
- DMERR("dm_array_cursor_next for hint failed");
- goto out;
+ dm_array_cursor_end(&cmd->hint_cursor);
+ hints_valid = false;
}
}
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index a53413371725..e13d991e9fb5 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -3009,8 +3009,13 @@ static dm_cblock_t get_cache_dev_size(struct cache *cache)
static bool can_resize(struct cache *cache, dm_cblock_t new_size)
{
- if (from_cblock(new_size) > from_cblock(cache->cache_size))
- return true;
+ if (from_cblock(new_size) > from_cblock(cache->cache_size)) {
+ if (cache->sized) {
+ DMERR("%s: unable to extend cache due to missing cache table reload",
+ cache_device_name(cache));
+ return false;
+ }
+ }
/*
* We can't drop a dirty block when shrinking the cache.
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index d94ba6f72ff5..419362c2d8ac 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -806,19 +806,19 @@ static int parse_path_selector(struct dm_arg_set *as, struct priority_group *pg,
}
static int setup_scsi_dh(struct block_device *bdev, struct multipath *m,
- const char *attached_handler_name, char **error)
+ const char **attached_handler_name, char **error)
{
struct request_queue *q = bdev_get_queue(bdev);
int r;
if (test_bit(MPATHF_RETAIN_ATTACHED_HW_HANDLER, &m->flags)) {
retain:
- if (attached_handler_name) {
+ if (*attached_handler_name) {
/*
* Clear any hw_handler_params associated with a
* handler that isn't already attached.
*/
- if (m->hw_handler_name && strcmp(attached_handler_name, m->hw_handler_name)) {
+ if (m->hw_handler_name && strcmp(*attached_handler_name, m->hw_handler_name)) {
kfree(m->hw_handler_params);
m->hw_handler_params = NULL;
}
@@ -830,7 +830,8 @@ retain:
* handler instead of the original table passed in.
*/
kfree(m->hw_handler_name);
- m->hw_handler_name = attached_handler_name;
+ m->hw_handler_name = *attached_handler_name;
+ *attached_handler_name = NULL;
}
}
@@ -867,7 +868,7 @@ static struct pgpath *parse_path(struct dm_arg_set *as, struct path_selector *ps
struct pgpath *p;
struct multipath *m = ti->private;
struct request_queue *q;
- const char *attached_handler_name;
+ const char *attached_handler_name = NULL;
/* we need at least a path arg */
if (as->argc < 1) {
@@ -890,7 +891,7 @@ static struct pgpath *parse_path(struct dm_arg_set *as, struct path_selector *ps
attached_handler_name = scsi_dh_attached_handler_name(q, GFP_KERNEL);
if (attached_handler_name || m->hw_handler_name) {
INIT_DELAYED_WORK(&p->activate_path, activate_path_work);
- r = setup_scsi_dh(p->path.dev->bdev, m, attached_handler_name, &ti->error);
+ r = setup_scsi_dh(p->path.dev->bdev, m, &attached_handler_name, &ti->error);
if (r) {
dm_put_device(ti, p->path.dev);
goto bad;
@@ -905,6 +906,7 @@ static struct pgpath *parse_path(struct dm_arg_set *as, struct path_selector *ps
return p;
bad:
+ kfree(attached_handler_name);
free_pgpath(p);
return ERR_PTR(r);
}
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 5ba067fa0c72..c44925e4e481 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -3353,7 +3353,7 @@ static const char *sync_str(enum sync_state state)
};
/* Return enum sync_state for @mddev derived from @recovery flags */
-static const enum sync_state decipher_sync_action(struct mddev *mddev, unsigned long recovery)
+static enum sync_state decipher_sync_action(struct mddev *mddev, unsigned long recovery)
{
if (test_bit(MD_RECOVERY_FROZEN, &recovery))
return st_frozen;
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index 74f6770c70b1..20b0776e39ef 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -832,10 +832,8 @@ static void __set_metadata_reserve(struct dm_pool_metadata *pmd)
if (r) {
DMERR("could not get size of metadata device");
pmd->metadata_reserve = max_blocks;
- } else {
- sector_div(total, 10);
- pmd->metadata_reserve = min(max_blocks, total);
- }
+ } else
+ pmd->metadata_reserve = min(max_blocks, div_u64(total, 10));
}
struct dm_pool_metadata *dm_pool_metadata_open(struct block_device *bdev,