From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jeff Layton <jlayton@redhat.com>,
"Yan, Zheng" <zyan@redhat.com>, Ilya Dryomov <idryomov@gmail.com>
Subject: [PATCH 3.18 02/11] ceph: unlock dangling spinlock in try_flush_caps()
Date: Tue, 31 Oct 2017 10:54:39 +0100 [thread overview]
Message-ID: <20171031095324.580049947@linuxfoundation.org> (raw)
In-Reply-To: <20171031095324.488947183@linuxfoundation.org>
3.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jeff Layton <jlayton@redhat.com>
commit 6c2838fbdedb9b72a81c931d49e56b229b6cdbca upstream.
sparse warns:
fs/ceph/caps.c:2042:9: warning: context imbalance in 'try_flush_caps' - wrong count at exit
We need to exit this function with the lock unlocked, but a couple of
cases leave it locked.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ceph/caps.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -1748,6 +1748,7 @@ static int try_flush_caps(struct inode *
retry:
spin_lock(&ci->i_ceph_lock);
if (ci->i_ceph_flags & CEPH_I_NOFLUSH) {
+ spin_unlock(&ci->i_ceph_lock);
dout("try_flush_caps skipping %p I_NOFLUSH set\n", inode);
goto out;
}
@@ -1765,8 +1766,10 @@ retry:
mutex_lock(&session->s_mutex);
goto retry;
}
- if (cap->session->s_state < CEPH_MDS_SESSION_OPEN)
+ if (cap->session->s_state < CEPH_MDS_SESSION_OPEN) {
+ spin_unlock(&ci->i_ceph_lock);
goto out;
+ }
flushing = __mark_caps_flushing(inode, session);
next prev parent reply other threads:[~2017-10-31 9:54 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 9:54 [PATCH 3.18 00/11] 3.18.79-stable review Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 01/11] ALSA: hda - fix headset mic problem for Dell machines with alc236 Greg Kroah-Hartman
2017-10-31 10:42 ` Takashi Iwai
2017-11-01 15:20 ` Greg Kroah-Hartman
2017-10-31 9:54 ` Greg Kroah-Hartman [this message]
2017-10-31 9:54 ` [PATCH 3.18 03/11] usb: xhci: Handle error condition in xhci_stop_device() Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 04/11] spi: uapi: spidev: add missing ioctl header Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 05/11] fuse: fix READDIRPLUS skipping an entry Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 06/11] Input: gtco - fix potential out-of-bound access Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 07/11] assoc_array: Fix a buggy node-splitting case Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 08/11] scsi: zfcp: fix erp_action use-before-initialize in REC action trace Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 09/11] scsi: sg: Re-fix off by one in sg_fill_request_table() Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 10/11] can: kvaser_usb: Correct return value in printout Greg Kroah-Hartman
2017-10-31 9:54 ` [PATCH 3.18 11/11] ecryptfs: fix dereference of NULL user_key_payload Greg Kroah-Hartman
2017-10-31 17:18 ` [PATCH 3.18 00/11] 3.18.79-stable review Guenter Roeck
2017-10-31 20:04 ` Shuah Khan
2017-11-01 15:20 ` Greg Kroah-Hartman
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