diff options
| author | Anand Jain <Anand.Jain@oracle.com> | 2014-01-22 04:15:51 +0100 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-01-28 22:20:44 +0100 |
| commit | 2365dd3ca02bbb6d3412404482e1d85752549953 (patch) | |
| tree | 8f334a7ea9673c1cae8c32cf30040ab9430b6be9 | |
| parent | Btrfs: fix snprintf usage by send's gen_unique_name (diff) | |
| download | linux-2365dd3ca02bbb6d3412404482e1d85752549953.tar.xz linux-2365dd3ca02bbb6d3412404482e1d85752549953.zip | |
btrfs: undo sysfs when open_ctree() fails
reproducer:
mkfs.btrfs -f /dev/sdb &&\
mount /dev/sdb /btrfs &&\
btrfs dev add -f /dev/sdc /btrfs &&\
umount /btrfs &&\
wipefs -a /dev/sdc &&\
mount -o degraded /dev/sdb /btrfs
//above mount fails so try with RO
mount -o degraded,ro /dev/sdb /btrfs
------
sysfs: cannot create duplicate filename '/fs/btrfs/3f48c79e-5ed0-4e87-b189-86e749e503f4'
::
dump_stack+0x49/0x5e
warn_slowpath_common+0x87/0xb0
warn_slowpath_fmt+0x41/0x50
strlcat+0x69/0x80
sysfs_warn_dup+0x87/0xa0
sysfs_add_one+0x40/0x50
create_dir+0x76/0xc0
sysfs_create_dir_ns+0x7a/0xc0
kobject_add_internal+0xad/0x220
kobject_add_varg+0x38/0x60
kobject_init_and_add+0x53/0x70
mutex_lock+0x11/0x40
__free_pages+0x25/0x30
free_pages+0x41/0x50
selinux_sb_copy_data+0x14e/0x1e0
mount_fs+0x3e/0x1a0
vfs_kern_mount+0x71/0x120
do_mount+0x3f7/0x980
SyS_mount+0x8b/0xe0
system_call_fastpath+0x16/0x1b
------
further 'modprobe -r btrfs' fails as well
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
| -rw-r--r-- | fs/btrfs/disk-io.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 47c2bc21caad..7619147da382 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2745,13 +2745,13 @@ retry_root_backup: ret = btrfs_init_space_info(fs_info); if (ret) { printk(KERN_ERR "BTRFS: Failed to initial space info: %d\n", ret); - goto fail_block_groups; + goto fail_sysfs; } ret = btrfs_read_block_groups(extent_root); if (ret) { printk(KERN_ERR "BTRFS: Failed to read block groups: %d\n", ret); - goto fail_block_groups; + goto fail_sysfs; } fs_info->num_tolerated_disk_barrier_failures = btrfs_calc_num_tolerated_disk_barrier_failures(fs_info); @@ -2760,13 +2760,13 @@ retry_root_backup: !(sb->s_flags & MS_RDONLY)) { printk(KERN_WARNING "BTRFS: " "too many missing devices, writeable mount is not allowed\n"); - goto fail_block_groups; + goto fail_sysfs; } fs_info->cleaner_kthread = kthread_run(cleaner_kthread, tree_root, "btrfs-cleaner"); if (IS_ERR(fs_info->cleaner_kthread)) - goto fail_block_groups; + goto fail_sysfs; fs_info->transaction_kthread = kthread_run(transaction_kthread, tree_root, @@ -2948,6 +2948,9 @@ fail_cleaner: */ filemap_write_and_wait(fs_info->btree_inode->i_mapping); +fail_sysfs: + btrfs_sysfs_remove_one(fs_info); + fail_block_groups: btrfs_put_block_group_cache(fs_info); btrfs_free_block_groups(fs_info); |