From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Ronnie Sahlberg <lsahlber@redhat.com>,
Paulo Alcantara <pc@cjr.nz>,
Steve French <stfrench@microsoft.com>,
Sasha Levin <sashal@kernel.org>,
linux-cifs@vger.kernel.org, samba-technical@lists.samba.org
Subject: [PATCH AUTOSEL 5.10 30/33] cifs: revalidate mapping when we open files for SMB1 POSIX
Date: Mon, 29 Mar 2021 18:22:18 -0400 [thread overview]
Message-ID: <20210329222222.2382987-30-sashal@kernel.org> (raw)
In-Reply-To: <20210329222222.2382987-1-sashal@kernel.org>
From: Ronnie Sahlberg <lsahlber@redhat.com>
[ Upstream commit cee8f4f6fcabfdf229542926128e9874d19016d5 ]
RHBZ: 1933527
Under SMB1 + POSIX, if an inode is reused on a server after we have read and
cached a part of a file, when we then open the new file with the
re-cycled inode there is a chance that we may serve the old data out of cache
to the application.
This only happens for SMB1 (deprecated) and when posix are used.
The simplest solution to avoid this race is to force a revalidate
on smb1-posix open.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/cifs/file.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index be46fab4c96d..da057570bb93 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -164,6 +164,7 @@ int cifs_posix_open(char *full_path, struct inode **pinode,
goto posix_open_ret;
}
} else {
+ cifs_revalidate_mapping(*pinode);
cifs_fattr_to_inode(*pinode, &fattr);
}
--
2.30.1
next prev parent reply other threads:[~2021-03-29 22:28 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-29 22:21 [PATCH AUTOSEL 5.10 01/33] ARM: dts: am33xx: add aliases for mmc interfaces Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 02/33] bus: ti-sysc: Fix warning on unbind if reset is not deasserted Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 03/33] platform/x86: intel-hid: Support Lenovo ThinkPad X1 Tablet Gen 2 Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 04/33] bpf, x86: Use kvmalloc_array instead kmalloc_array in bpf_jit_comp Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 05/33] net/mlx5e: Enforce minimum value check for ICOSQ size Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 06/33] net: pxa168_eth: Fix a potential data race in pxa168_eth_remove Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 07/33] kunit: tool: Fix a python tuple typing error Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 08/33] mISDN: fix crash in fritzpci Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 09/33] net: correct sk_acceptq_is_full() Sasha Levin
2021-04-05 18:59 ` Marcelo Ricardo Leitner
2021-04-07 14:15 ` Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 10/33] mac80211: fix double free in ibss_leave Sasha Levin
2021-03-29 22:21 ` [PATCH AUTOSEL 5.10 11/33] mac80211: Check crypto_aead_encrypt for errors Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 12/33] mac80211: choose first enabled channel for monitor Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 13/33] drm/msm/dsi_pll_7nm: Fix variable usage for pll_lockdet_rate Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 14/33] drm/msm/adreno: a5xx_power: Don't apply A540 lm_setup to other GPUs Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 15/33] drm/msm: Ratelimit invalid-fence message Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 16/33] netfilter: conntrack: Fix gre tunneling over ipv6 Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 17/33] netfilter: nftables: skip hook overlap logic if flowtable is stale Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 18/33] net: ipa: fix init header command validation Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 19/33] platform/x86: thinkpad_acpi: Allow the FnLock LED to change state Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 20/33] kselftest/arm64: sve: Do not use non-canonical FFR register value Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 21/33] drm/msm/disp/dpu1: icc path needs to be set before dpu runtime resume Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 22/33] x86/build: Turn off -fcf-protection for realmode targets Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 23/33] block: clear GD_NEED_PART_SCAN later in bdev_disk_changed Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 24/33] platform/x86: intel_pmc_core: Ignore GBE LTR on Tiger Lake platforms Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 25/33] ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 26/33] scsi: target: pscsi: Clean up after failure in pscsi_map_sg() Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 27/33] selftests/vm: fix out-of-tree build Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 28/33] ia64: mca: allocate early mca with GFP_ATOMIC Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 29/33] ia64: fix format strings for err_inject Sasha Levin
2021-03-29 22:22 ` Sasha Levin [this message]
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 31/33] cifs: Silently ignore unknown oplock break handle Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 32/33] io_uring: fix timeout cancel return code Sasha Levin
2021-03-29 22:22 ` [PATCH AUTOSEL 5.10 33/33] math: Export mul_u64_u64_div_u64 Sasha Levin
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