6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ziyan Xu ziyan@securitygossip.com
commit 89bb430f621124af39bb31763c4a8b504c9651e2 upstream.
When ksmbd_conn_releasing(opinfo->conn) returns true,the refcount was not decremented properly, causing a refcount leak that prevents the count from reaching zero and the memory from being released.
Cc: stable@vger.kernel.org Signed-off-by: Ziyan Xu ziyan@securitygossip.com Signed-off-by: Namjae Jeon linkinjeon@kernel.org Signed-off-by: Steve French stfrench@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/smb/server/oplock.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)
--- a/fs/smb/server/oplock.c +++ b/fs/smb/server/oplock.c @@ -1102,8 +1102,10 @@ void smb_send_parent_lease_break_noti(st if (!atomic_inc_not_zero(&opinfo->refcount)) continue;
- if (ksmbd_conn_releasing(opinfo->conn)) + if (ksmbd_conn_releasing(opinfo->conn)) { + opinfo_put(opinfo); continue; + }
oplock_break(opinfo, SMB2_OPLOCK_LEVEL_NONE, NULL); opinfo_put(opinfo); @@ -1139,8 +1141,11 @@ void smb_lazy_parent_lease_break_close(s if (!atomic_inc_not_zero(&opinfo->refcount)) continue;
- if (ksmbd_conn_releasing(opinfo->conn)) + if (ksmbd_conn_releasing(opinfo->conn)) { + opinfo_put(opinfo); continue; + } + oplock_break(opinfo, SMB2_OPLOCK_LEVEL_NONE, NULL); opinfo_put(opinfo); } @@ -1343,8 +1348,10 @@ void smb_break_all_levII_oplock(struct k if (!atomic_inc_not_zero(&brk_op->refcount)) continue;
- if (ksmbd_conn_releasing(brk_op->conn)) + if (ksmbd_conn_releasing(brk_op->conn)) { + opinfo_put(brk_op); continue; + }
if (brk_op->is_lease && (brk_op->o_lease->state & (~(SMB2_LEASE_READ_CACHING_LE |