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authorJohannes Thumshirn <johannes.thumshirn@wdc.com>2022-11-04 07:12:34 -0700
committerDavid Sterba <dsterba@suse.com>2022-11-07 14:35:24 +0100
commita8d1b1647bf8244a5f270538e9e636e2657fffa3 (patch)
tree29d2d8dc1db8aa22e0905e9ad861c6477e4402e7 /fs
parent21e61ec6d0bb786818490e926aa9aeb4de95ad0d (diff)
downloadlinux-a8d1b1647bf8244a5f270538e9e636e2657fffa3.tar.bz2
btrfs: zoned: initialize device's zone info for seeding
When performing seeding on a zoned filesystem it is necessary to initialize each zoned device's btrfs_zoned_device_info structure, otherwise mounting the filesystem will cause a NULL pointer dereference. This was uncovered by fstests' testcase btrfs/163. CC: stable@vger.kernel.org # 5.15+ Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/disk-io.c4
-rw-r--r--fs/btrfs/volumes.c11
-rw-r--r--fs/btrfs/volumes.h2
3 files changed, 13 insertions, 4 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 4b28263c3d32..d99bf7c64611 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2551,7 +2551,9 @@ static int btrfs_read_roots(struct btrfs_fs_info *fs_info)
fs_info->dev_root = root;
}
/* Initialize fs_info for all devices in any case */
- btrfs_init_devices_late(fs_info);
+ ret = btrfs_init_devices_late(fs_info);
+ if (ret)
+ goto out;
/*
* This tree can share blocks with some other fs tree during relocation
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 3cb968ede675..635f45f1a2ef 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -7756,10 +7756,11 @@ error:
return ret;
}
-void btrfs_init_devices_late(struct btrfs_fs_info *fs_info)
+int btrfs_init_devices_late(struct btrfs_fs_info *fs_info)
{
struct btrfs_fs_devices *fs_devices = fs_info->fs_devices, *seed_devs;
struct btrfs_device *device;
+ int ret = 0;
fs_devices->fs_info = fs_info;
@@ -7768,12 +7769,18 @@ void btrfs_init_devices_late(struct btrfs_fs_info *fs_info)
device->fs_info = fs_info;
list_for_each_entry(seed_devs, &fs_devices->seed_list, seed_list) {
- list_for_each_entry(device, &seed_devs->devices, dev_list)
+ list_for_each_entry(device, &seed_devs->devices, dev_list) {
device->fs_info = fs_info;
+ ret = btrfs_get_dev_zone_info(device, false);
+ if (ret)
+ break;
+ }
seed_devs->fs_info = fs_info;
}
mutex_unlock(&fs_devices->device_list_mutex);
+
+ return ret;
}
static u64 btrfs_dev_stats_value(const struct extent_buffer *eb,
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index f8b668dc8bf8..099def5613b8 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -671,7 +671,7 @@ int find_free_dev_extent(struct btrfs_device *device, u64 num_bytes,
void btrfs_dev_stat_inc_and_print(struct btrfs_device *dev, int index);
int btrfs_get_dev_stats(struct btrfs_fs_info *fs_info,
struct btrfs_ioctl_get_dev_stats *stats);
-void btrfs_init_devices_late(struct btrfs_fs_info *fs_info);
+int btrfs_init_devices_late(struct btrfs_fs_info *fs_info);
int btrfs_init_dev_stats(struct btrfs_fs_info *fs_info);
int btrfs_run_dev_stats(struct btrfs_trans_handle *trans);
void btrfs_rm_dev_replace_remove_srcdev(struct btrfs_device *srcdev);