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From: Al Viro <viro@ZenIV.linux.org.uk>
To: linux-kernel@vger.kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	linux-fsdevel@vger.kernel.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [PATCH 07/20] nvram: drop useless access_ok()
Date: Sun, 10 May 2020 00:45:44 +0100	[thread overview]
Message-ID: <20200509234557.1124086-7-viro@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20200509234557.1124086-1-viro@ZenIV.linux.org.uk>

From: Al Viro <viro@zeniv.linux.org.uk>

we are using copy_to_user()/memdup_user() anyway

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 drivers/char/nvram.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 4667844eee69..8206412d25ba 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -232,8 +232,6 @@ static ssize_t nvram_misc_read(struct file *file, char __user *buf,
 	ssize_t ret;
 
 
-	if (!access_ok(buf, count))
-		return -EFAULT;
 	if (*ppos >= nvram_size)
 		return 0;
 
@@ -264,8 +262,6 @@ static ssize_t nvram_misc_write(struct file *file, const char __user *buf,
 	char *tmp;
 	ssize_t ret;
 
-	if (!access_ok(buf, count))
-		return -EFAULT;
 	if (*ppos >= nvram_size)
 		return 0;
 
-- 
2.11.0


  parent reply	other threads:[~2020-05-09 23:47 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-09 23:41 [PATCHES] uaccess simple access_ok() removals Al Viro
2020-05-09 23:45 ` [PATCH 01/20] dlmfs_file_write(): get rid of pointless access_ok() Al Viro
2020-05-09 23:45   ` [PATCH 02/20] fat_dir_ioctl(): hadn't needed that access_ok() for more than a decade Al Viro
2020-05-09 23:45   ` [PATCH 03/20] btrfs_ioctl_send(): don't bother with access_ok() Al Viro
2020-05-09 23:45   ` [PATCH 04/20] FIEMAP: " Al Viro
2020-05-10  7:02     ` Christoph Hellwig
2020-05-13 19:02       ` Al Viro
2020-05-13 19:38         ` Christoph Hellwig
2020-05-29 15:01           ` Al Viro
2020-05-09 23:45   ` [PATCH 05/20] tomoyo_write_control(): get rid of pointless access_ok() Al Viro
2020-05-10  0:50     ` Tetsuo Handa
2020-05-10  0:57       ` Linus Torvalds
2020-05-10  1:04         ` Tetsuo Handa
2020-05-10  3:01         ` Al Viro
2020-05-09 23:45   ` [PATCH 06/20] n_hdlc_tty_read(): remove " Al Viro
2020-05-15 10:53     ` Greg Kroah-Hartman
2020-05-09 23:45   ` Al Viro [this message]
2020-05-15 10:54     ` [PATCH 07/20] nvram: drop useless access_ok() Greg Kroah-Hartman
2020-05-09 23:45   ` [PATCH 08/20] cm4000_cs.c cmm_ioctl(): get rid of pointless access_ok() Al Viro
2020-05-09 23:45   ` [PATCH 09/20] drivers/fpga/dfl-fme-pr.c: " Al Viro
2020-05-09 23:45   ` [PATCH 10/20] drivers/fpga/dfl-afu-dma-region.c: " Al Viro
2020-05-09 23:45   ` [PATCH 11/20] amifb: get rid of pointless access_ok() calls Al Viro
2020-05-14 13:45     ` Bartlomiej Zolnierkiewicz
2020-05-14 14:07       ` Al Viro
2020-05-14 14:25         ` Bartlomiej Zolnierkiewicz
2020-05-14 17:41           ` Al Viro
2020-05-14 20:21             ` Geert Uytterhoeven
2020-05-09 23:45   ` [PATCH 12/20] omapfb: " Al Viro
2020-05-14 13:39     ` Bartlomiej Zolnierkiewicz
2020-05-09 23:45   ` [PATCH 13/20] drivers/crypto/ccp/sev-dev.c: get rid of pointless access_ok() Al Viro
2020-05-09 23:45   ` [PATCH 14/20] via-pmu: don't bother with access_ok() Al Viro
2020-05-09 23:45   ` [PATCH 15/20] drm_read(): get rid of pointless access_ok() Al Viro
2020-05-09 23:45   ` [PATCH 16/20] efi_test: " Al Viro
2020-05-09 23:45   ` [PATCH 17/20] lpfc_debugfs: " Al Viro
2020-05-09 23:45   ` [PATCH 18/20] usb: get rid of pointless access_ok() calls Al Viro
2020-05-15 10:53     ` Greg Kroah-Hartman
2020-05-09 23:45   ` [PATCH 19/20] hfi1: get rid of pointless access_ok() Al Viro
2020-05-09 23:45   ` [PATCH 4/4] vmci_host: " Al Viro
2020-05-15 10:53     ` Greg Kroah-Hartman
2020-05-10  0:34 ` [PATCHES] uaccess simple access_ok() removals Linus Torvalds
2020-05-10  3:27   ` Al Viro
2020-05-10 14:34 ` David Laight

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