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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2020-11-02 23:11:30 +0300 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2020-11-02 23:34:47 +0300 |
| commit | 6bd1c7bd4ee7b17980cdc347522dcb76feac9b98 (patch) | |
| tree | dbdd59dc08b716d982bf5df2be9f8ef04abd963c /fs | |
| parent | c5c68724696e7d2f8db58a5fce3673208d35c485 (diff) | |
| download | linux-6bd1c7bd4ee7b17980cdc347522dcb76feac9b98.tar.xz | |
gfs2: Don't call cancel_delayed_work_sync from within delete work function
Right now, we can end up calling cancel_delayed_work_sync from within
delete_work_func via gfs2_lookup_by_inum -> gfs2_inode_lookup ->
gfs2_cancel_delete_work. When that happens, it will result in a
deadlock. Instead, gfs2_inode_lookup should skip the call to
gfs2_cancel_delete_work when called from delete_work_func (blktype ==
GFS2_BLKST_UNLINKED).
Reported-by: Alexander Ahring Oder Aring <aahringo@redhat.com>
Fixes: a0e3cc65fa29 ("gfs2: Turn gl_delete into a delayed work")
Cc: stable@vger.kernel.org # v5.8+
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/gfs2/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 6774865f5b5b..077ccb1b3ccc 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -180,7 +180,8 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, error = gfs2_glock_nq_init(io_gl, LM_ST_SHARED, GL_EXACT, &ip->i_iopen_gh); if (unlikely(error)) goto fail; - gfs2_cancel_delete_work(ip->i_iopen_gh.gh_gl); + if (blktype != GFS2_BLKST_UNLINKED) + gfs2_cancel_delete_work(ip->i_iopen_gh.gh_gl); glock_set_object(ip->i_iopen_gh.gh_gl, ip); gfs2_glock_put(io_gl); io_gl = NULL; |