68 lines
2.0 KiB
Diff
68 lines
2.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Thomas Gleixner <tglx@linutronix.de>
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Date: Thu, 2 Nov 2017 13:30:03 +0100
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Subject: [PATCH] bitops: Revert cbe96375025e ("bitops: Add clear/set_bit32()
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to linux/bitops.h")
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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CVE-2017-5754
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These ops are not endian safe and may break on architectures which have
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aligment requirements.
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Reverts: cbe96375025e ("bitops: Add clear/set_bit32() to linux/bitops.h")
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Reported-by: Peter Zijlstra <peterz@infradead.org>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Cc: Andi Kleen <ak@linux.intel.com>
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(cherry picked from commit 1943dc07b45e347c52c1bfdd4a37e04a86e399aa)
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Signed-off-by: Andy Whitcroft <apw@canonical.com>
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Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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(cherry picked from commit adb64d8c852206281ea6ee6590ae35076a219409)
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Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
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---
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include/linux/bitops.h | 26 --------------------------
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1 file changed, 26 deletions(-)
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diff --git a/include/linux/bitops.h b/include/linux/bitops.h
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index eb257a96db6d..a83c822c35c2 100644
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--- a/include/linux/bitops.h
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+++ b/include/linux/bitops.h
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@@ -226,32 +226,6 @@ static inline unsigned long __ffs64(u64 word)
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return __ffs((unsigned long)word);
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}
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-/*
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- * clear_bit32 - Clear a bit in memory for u32 array
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- * @nr: Bit to clear
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- * @addr: u32 * address of bitmap
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- *
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- * Same as clear_bit, but avoids needing casts for u32 arrays.
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- */
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-
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-static __always_inline void clear_bit32(long nr, volatile u32 *addr)
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-{
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- clear_bit(nr, (volatile unsigned long *)addr);
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-}
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-
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-/*
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- * set_bit32 - Set a bit in memory for u32 array
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- * @nr: Bit to clear
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- * @addr: u32 * address of bitmap
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- *
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- * Same as set_bit, but avoids needing casts for u32 arrays.
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- */
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-
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-static __always_inline void set_bit32(long nr, volatile u32 *addr)
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-{
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- set_bit(nr, (volatile unsigned long *)addr);
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-}
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-
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#ifdef __KERNEL__
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#ifndef set_mask_bits
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--
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2.14.2
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