6.6-stable review patch. If anyone has any objections, please let me know.
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From: Marios Makassikis mmakassikis@freebox.fr
[ Upstream commit 5fb282ba4fef8985a5acf2b32681f2ec07732561 ]
rcu_dereference can return NULL, so make sure we check against that.
Signed-off-by: Marios Makassikis mmakassikis@freebox.fr Acked-by: Namjae Jeon linkinjeon@kernel.org Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/smb/server/oplock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/smb/server/oplock.c b/fs/smb/server/oplock.c index 7bdae2adad228..58bafe23ded9a 100644 --- a/fs/smb/server/oplock.c +++ b/fs/smb/server/oplock.c @@ -1152,7 +1152,7 @@ void smb_lazy_parent_lease_break_close(struct ksmbd_file *fp) opinfo = rcu_dereference(fp->f_opinfo); rcu_read_unlock();
- if (!opinfo->is_lease || opinfo->o_lease->version != 2) + if (!opinfo || !opinfo->is_lease || opinfo->o_lease->version != 2) return;
p_ci = ksmbd_inode_lookup_lock(fp->filp->f_path.dentry->d_parent);