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 4.4 04/20] ceph: unlock dangling spinlock in try_flush_caps()
Date: Tue, 31 Oct 2017 10:55:20 +0100 [thread overview]
Message-ID: <20171031095510.445387281@linuxfoundation.org> (raw)
In-Reply-To: <20171031095510.079198256@linuxfoundation.org>
4.4-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
@@ -1850,6 +1850,7 @@ 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;
}
@@ -1867,8 +1868,10 @@ 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, &flush_tid,
&oldest_flush_tid);
next prev parent reply other threads:[~2017-10-31 9:56 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 9:55 [PATCH 4.4 00/20] 4.4.96-stable review Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 01/20] workqueue: replace pool->manager_arb mutex with a flag Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 02/20] ALSA: hda/realtek - Add support for ALC236/ALC3204 Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 03/20] ALSA: hda - fix headset mic problem for Dell machines with alc236 Greg Kroah-Hartman
2017-10-31 9:55 ` Greg Kroah-Hartman [this message]
2017-10-31 9:55 ` [PATCH 4.4 05/20] usb: xhci: Handle error condition in xhci_stop_device() Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 06/20] spi: uapi: spidev: add missing ioctl header Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 07/20] fuse: fix READDIRPLUS skipping an entry Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 08/20] xen/gntdev: avoid out of bounds access in case of partial gntdev_mmap() Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 09/20] Input: elan_i2c - add ELAN0611 to the ACPI table Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 10/20] Input: gtco - fix potential out-of-bound access Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 11/20] assoc_array: Fix a buggy node-splitting case Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 12/20] scsi: zfcp: fix erp_action use-before-initialize in REC action trace Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 13/20] scsi: sg: Re-fix off by one in sg_fill_request_table() Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 14/20] can: sun4i: fix loopback mode Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 15/20] can: kvaser_usb: Correct return value in printout Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 16/20] can: kvaser_usb: Ignore CMD_FLUSH_QUEUE_REPLY messages Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 17/20] regulator: fan53555: fix I2C device ids Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 18/20] x86/microcode/intel: Disable late loading on model 79 Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 19/20] ecryptfs: fix dereference of NULL user_key_payload Greg Kroah-Hartman
2017-10-31 9:55 ` [PATCH 4.4 20/20] [PATCH] Revert "drm: bridge: add DT bindings for TI ths8135" Greg Kroah-Hartman
2017-10-31 17:19 ` [PATCH 4.4 00/20] 4.4.96-stable review Guenter Roeck
2017-10-31 20:04 ` Shuah Khan
2017-10-31 21:33 ` Tom Gall
2017-11-01 15:22 ` Greg Kroah-Hartman
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