All of lore.kernel.org
 help / color / mirror / Atom feed
From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Ronnie Sahlberg <lsahlber@redhat.com>,
	Jeff Layton <jlayton@kernel.org>,
	Steve French <stfrench@microsoft.com>,
	Sasha Levin <sashal@kernel.org>,
	linux-cifs@vger.kernel.org, samba-technical@lists.samba.org
Subject: [PATCH AUTOSEL 4.14 16/27] cifs: protect updating server->dstaddr with a spinlock
Date: Thu, 30 Apr 2020 09:53:51 -0400	[thread overview]
Message-ID: <20200430135402.20994-16-sashal@kernel.org> (raw)
In-Reply-To: <20200430135402.20994-1-sashal@kernel.org>

From: Ronnie Sahlberg <lsahlber@redhat.com>

[ Upstream commit fada37f6f62995cc449b36ebba1220594bfe55fe ]

We use a spinlock while we are reading and accessing the destination address for a server.
We need to also use this spinlock to protect when we are modifying this address from
reconn_set_ipaddr().

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/connect.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 697edc92dff27..58e7288e5151c 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -348,8 +348,10 @@ static int reconn_set_ipaddr(struct TCP_Server_Info *server)
 		return rc;
 	}
 
+	spin_lock(&cifs_tcp_ses_lock);
 	rc = cifs_convert_address((struct sockaddr *)&server->dstaddr, ipaddr,
 				  strlen(ipaddr));
+	spin_unlock(&cifs_tcp_ses_lock);
 	kfree(ipaddr);
 
 	return !rc ? -1 : 0;
-- 
2.20.1


  parent reply	other threads:[~2020-04-30 14:00 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-30 13:53 [PATCH AUTOSEL 4.14 01/27] iio:ad7797: Use correct attribute_group Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 02/27] iio: adc: stm32-adc: fix sleep in atomic context Sasha Levin
2020-04-30 13:53   ` Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 03/27] ASoC: topology: Check return value of pcm_new_ver Sasha Levin
2020-04-30 13:53   ` Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 04/27] nfsd: memory corruption in nfsd4_lock() Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 05/27] selftests/ipc: Fix test failure seen after initial test run Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 06/27] ASoC: sgtl5000: Fix VAG power-on handling Sasha Levin
2020-04-30 13:53   ` Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 07/27] usb: dwc3: gadget: Do link recovery for SS and SSP Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 08/27] ASoC: rsnd: Fix HDMI channel mapping for multi-SSI mode Sasha Levin
2020-04-30 13:53   ` Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 09/27] ASoC: codecs: hdac_hdmi: Fix incorrect use of list_for_each_entry Sasha Levin
2020-04-30 13:53   ` Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 10/27] ARM: dts: bcm283x: Disable dsi0 node Sasha Levin
2020-04-30 13:53   ` Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 11/27] wimax/i2400m: Fix potential urb refcnt leak Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 12/27] net: stmmac: fix enabling socfpga's ptp_ref_clock Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 13/27] net: stmmac: Fix sub-second increment Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 14/27] cxgb4: fix large delays in PTP synchronization Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 15/27] team: fix hang in team_mode_get() Sasha Levin
2020-04-30 13:53 ` Sasha Levin [this message]
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 17/27] macvlan: fix null dereference in macvlan_device_event() Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 18/27] s390/ftrace: fix potential crashes when switching tracers Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 19/27] scripts/config: allow colons in option strings for sed Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 20/27] net: dsa: b53: Fix ARL register definitions Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 21/27] net: dsa: b53: Rework ARL bin logic Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 22/27] perf/core: fix parent pid/tid in task exit events Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 23/27] net: bcmgenet: correct per TX/RX ring statistics Sasha Levin
2020-04-30 13:53 ` [PATCH AUTOSEL 4.14 24/27] lib/mpi: Fix building for powerpc with clang Sasha Levin
2020-04-30 13:54 ` [PATCH AUTOSEL 4.14 25/27] macsec: avoid to set wrong mtu Sasha Levin
2020-04-30 13:54 ` [PATCH AUTOSEL 4.14 26/27] net: bcmgenet: suppress warnings on failed Rx SKB allocations Sasha Levin
2020-04-30 13:54 ` [PATCH AUTOSEL 4.14 27/27] net: systemport: " Sasha Levin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20200430135402.20994-16-sashal@kernel.org \
    --to=sashal@kernel.org \
    --cc=jlayton@kernel.org \
    --cc=linux-cifs@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=lsahlber@redhat.com \
    --cc=samba-technical@lists.samba.org \
    --cc=stable@vger.kernel.org \
    --cc=stfrench@microsoft.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.