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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Steve French <stfrench@microsoft.com>,
	Ronnie Sahlberg <lsahlber@redhat.com>,
	Sasha Levin <sashal@kernel.org>,
	sfrench@samba.org, linux-cifs@vger.kernel.org,
	samba-technical@lists.samba.org
Subject: [PATCH AUTOSEL 5.18 45/49] smb3: check for null tcon
Date: Wed,  1 Jun 2022 09:52:09 -0400	[thread overview]
Message-ID: <20220601135214.2002647-45-sashal@kernel.org> (raw)
In-Reply-To: <20220601135214.2002647-1-sashal@kernel.org>

From: Steve French <stfrench@microsoft.com>

[ Upstream commit bbdf6cf56c88845fb0b713cbf5c6623c53fe40d8 ]

Although unlikely to be null, it is confusing to use a pointer
before checking for it to be null so move the use down after
null check.

Addresses-Coverity: 1517586 ("Null pointer dereferences  (REVERSE_INULL)")
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/smb2ops.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index d6aaeff4a30a..16aeb37636e5 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -760,8 +760,8 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
 		struct cifs_sb_info *cifs_sb,
 		struct cached_fid **cfid)
 {
-	struct cifs_ses *ses = tcon->ses;
-	struct TCP_Server_Info *server = ses->server;
+	struct cifs_ses *ses;
+	struct TCP_Server_Info *server;
 	struct cifs_open_parms oparms;
 	struct smb2_create_rsp *o_rsp = NULL;
 	struct smb2_query_info_rsp *qi_rsp = NULL;
@@ -779,6 +779,9 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
 	if (tcon->nohandlecache)
 		return -ENOTSUPP;
 
+	ses = tcon->ses;
+	server = ses->server;
+
 	if (cifs_sb->root == NULL)
 		return -ENOENT;
 
-- 
2.35.1


  parent reply	other threads:[~2022-06-01 13:57 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-01 13:51 [PATCH AUTOSEL 5.18 01/49] IB/rdmavt: add missing locks in rvt_ruc_loopback Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 02/49] PCI/ASPM: Make Intel DG2 L1 acceptable latency unlimited Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 03/49] ARM: dts: ox820: align interrupt controller node name with dtschema Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 04/49] ARM: dts: socfpga: " Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 05/49] ARM: dts: s5pv210: align DMA channels " Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 06/49] ASoC: amd: Add driver data to acp6x machine driver Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 07/49] arm64: dts: qcom: msm8994: Fix the cont_splash_mem address Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 08/49] arm64: dts: qcom: msm8994: Fix BLSP[12]_DMA channels count Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 09/49] PM / devfreq: rk3399_dmc: Disable edev on remove() Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 10/49] crypto: ccree - use fine grained DMA mapping dir Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 11/49] crypto: qat - fix off-by-one error in PFVF debug print Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 12/49] soc: ti: ti_sci_pm_domains: Check for null return of devm_kcalloc Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 13/49] fs: jfs: fix possible NULL pointer dereference in dbFree() Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 14/49] arm64: dts: qcom: sdm845-xiaomi-beryllium: fix typo in panel's vddio-supply property Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 15/49] arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition Sasha Levin
2022-06-01 15:26   ` Marc Zyngier
2022-06-05 13:38     ` Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 16/49] ALSA: usb-audio: Add quirk bits for enabling/disabling generic implicit fb Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 17/49] ALSA: usb-audio: Move generic implicit fb quirk entries into quirks.c Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 18/49] ARM: OMAP1: clock: Fix UART rate reporting algorithm Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 19/49] selftests/resctrl: Change the default limited time to 120 seconds Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 20/49] powerpc/fadump: Fix fadump to work with a different endian capture kernel Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 21/49] fat: add ratelimit to fat*_ent_bread() Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 22/49] pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources() Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 23/49] ARM: versatile: Add missing of_node_put in dcscb_init Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 24/49] ARM: dts: exynos: add atmel,24c128 fallback to Samsung EEPROM Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 25/49] arm64: dts: qcom: sc7280-idp: Configure CTS pin to bias-bus-hold for bluetooth Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 26/49] arm64: dts: qcom: sc7280-qcard: " Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 27/49] ARM: hisi: Add missing of_node_put after of_find_compatible_node Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 28/49] cpufreq: Avoid unnecessary frequency updates due to mismatch Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 29/49] PCI: microchip: Add missing chained_irq_enter()/exit() calls Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 30/49] powerpc/rtas: Keep MSR[RI] set when calling RTAS Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 31/49] PCI: Avoid pci_dev_lock() AB/BA deadlock with sriov_numvfs_store() Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 32/49] PCI: cadence: Clear FLR in device capabilities register Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 33/49] KVM: PPC: Book3S HV Nested: L2 LPCR should inherit L1 LPES setting Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 34/49] alpha: fix alloc_zeroed_user_highpage_movable() Sasha Levin
2022-06-01 13:51 ` [PATCH AUTOSEL 5.18 35/49] KVM: arm64: vgic: Do not ignore vgic_its_restore_cte failures Sasha Levin
2022-06-01 16:45   ` Marc Zyngier
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 36/49] cifs: fix signed integer overflow when fl_end is OFFSET_MAX Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 37/49] tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 38/49] cifs: return ENOENT for DFS lookup_cache_entry() Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 39/49] powerpc/powernv/vas: Assign real address to rx_fifo in vas_rx_win_attr Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 40/49] powerpc/xics: fix refcount leak in icp_opal_init() Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 41/49] powerpc/powernv: fix missing of_node_put in uv_init() Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 42/49] macintosh/via-pmu: Fix build failure when CONFIG_INPUT is disabled Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 43/49] powerpc/iommu: Add missing of_node_put in iommu_init_early_dart Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 44/49] fanotify: fix incorrect fmode_t casts Sasha Levin
2022-06-01 13:52 ` Sasha Levin [this message]
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 46/49] RDMA/hfi1: Prevent panic when SDMA is disabled Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 47/49] cifs: do not use tcpStatus after negotiate completes Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 48/49] Input: gpio-keys - cancel delayed work only in case of GPIO Sasha Levin
2022-06-01 13:52 ` [PATCH AUTOSEL 5.18 49/49] drm: fix EDID struct for old ARM OABI format Sasha Levin

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