diff options
| author | Andreas Gruenbacher <agruenba@redhat.com> | 2023-11-02 20:52:30 +0100 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2023-11-06 01:51:26 +0100 |
| commit | 0cdc6f44e9fdc2d20d720145bf99a39f611f6d61 (patch) | |
| tree | 53969a1a9419262b45e43a0b4e75822edb425fdf /fs/gfs2 | |
| parent | bb25b97562e52b2b5808b348db32568b1f5394b5 (diff) | |
gfs2: don't withdraw if init_threads() got interrupted
In gfs2_fill_super(), when mounting a gfs2 filesystem is interrupted,
kthread_create() can return -EINTR. When that happens, we roll back
what has already been done and abort the mount.
Since commit 62dd0f98a0e5 ("gfs2: Flag a withdraw if init_threads()
fails), we are calling gfs2_withdraw_delayed() in gfs2_fill_super();
first via gfs2_make_fs_rw(), then directly. But gfs2_withdraw_delayed()
only marks the filesystem as withdrawing and relies on a caller further
up the stack to do the actual withdraw, which doesn't exist in the
gfs2_fill_super() case. Because the filesystem is marked as withdrawing
/ withdrawn, function gfs2_lm_unmount() doesn't release the dlm
lockspace, so when we try to mount that filesystem again, we get:
gfs2: fsid=gohan:gohan0: Trying to join cluster "lock_dlm", "gohan:gohan0"
gfs2: fsid=gohan:gohan0: dlm_new_lockspace error -17
Since commit b77b4a4815a9 ("gfs2: Rework freeze / thaw logic"), the
deadlock this gfs2_withdraw_delayed() call was supposed to work around
cannot occur anymore because freeze_go_callback() won't take the
sb->s_umount semaphore unconditionally anymore, so we can get rid of the
gfs2_withdraw_delayed() in gfs2_fill_super() entirely.
Reported-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: stable@vger.kernel.org # v6.5+
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/ops_fstype.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 2fa9baf61c3f..73ae5fcea0de 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -1279,10 +1279,8 @@ static int gfs2_fill_super(struct super_block *sb, struct fs_context *fc) if (!sb_rdonly(sb)) { error = init_threads(sdp); - if (error) { - gfs2_withdraw_delayed(sdp); + if (error) goto fail_per_node; - } } error = gfs2_freeze_lock_shared(sdp); |