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| author | Andi Kleen <ak@suse.de> | 2007-05-02 19:27:21 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:21 +0200 |
| commit | c812d6c198c5f39a6ea22a9a12d518cd3714af16 (patch) | |
| tree | bfb7c1cc944a91b6255729f065a409497043ac6a | |
| parent | ec1180db2ca2ec8692ce101560eff9eedf561781 (diff) | |
| download | op-kernel-dev-c812d6c198c5f39a6ea22a9a12d518cd3714af16.zip op-kernel-dev-c812d6c198c5f39a6ea22a9a12d518cd3714af16.tar.gz | |
[PATCH] i386: Remove copy_*_user BUG_ONs for (size < 0)
access_ok checks this case anyways, no need to check twice.
Signed-off-by: Andi Kleen <ak@suse.de>
| -rw-r--r-- | arch/i386/lib/usercopy.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/i386/lib/usercopy.c b/arch/i386/lib/usercopy.c index 086b372..9f38b12 100644 --- a/arch/i386/lib/usercopy.c +++ b/arch/i386/lib/usercopy.c @@ -716,7 +716,6 @@ do { \ unsigned long __copy_to_user_ll(void __user *to, const void *from, unsigned long n) { - BUG_ON((long) n < 0); #ifndef CONFIG_X86_WP_WORKS_OK if (unlikely(boot_cpu_data.wp_works_ok == 0) && ((unsigned long )to) < TASK_SIZE) { @@ -785,7 +784,6 @@ EXPORT_SYMBOL(__copy_to_user_ll); unsigned long __copy_from_user_ll(void *to, const void __user *from, unsigned long n) { - BUG_ON((long)n < 0); if (movsl_is_ok(to, from, n)) __copy_user_zeroing(to, from, n); else @@ -797,7 +795,6 @@ EXPORT_SYMBOL(__copy_from_user_ll); unsigned long __copy_from_user_ll_nozero(void *to, const void __user *from, unsigned long n) { - BUG_ON((long)n < 0); if (movsl_is_ok(to, from, n)) __copy_user(to, from, n); else @@ -810,7 +807,6 @@ EXPORT_SYMBOL(__copy_from_user_ll_nozero); unsigned long __copy_from_user_ll_nocache(void *to, const void __user *from, unsigned long n) { - BUG_ON((long)n < 0); #ifdef CONFIG_X86_INTEL_USERCOPY if ( n > 64 && cpu_has_xmm2) n = __copy_user_zeroing_intel_nocache(to, from, n); @@ -825,7 +821,6 @@ unsigned long __copy_from_user_ll_nocache(void *to, const void __user *from, unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *from, unsigned long n) { - BUG_ON((long)n < 0); #ifdef CONFIG_X86_INTEL_USERCOPY if ( n > 64 && cpu_has_xmm2) n = __copy_user_intel_nocache(to, from, n); @@ -853,7 +848,6 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr unsigned long copy_to_user(void __user *to, const void *from, unsigned long n) { - BUG_ON((long) n < 0); if (access_ok(VERIFY_WRITE, to, n)) n = __copy_to_user(to, from, n); return n; @@ -879,7 +873,6 @@ EXPORT_SYMBOL(copy_to_user); unsigned long copy_from_user(void *to, const void __user *from, unsigned long n) { - BUG_ON((long) n < 0); if (access_ok(VERIFY_READ, from, n)) n = __copy_from_user(to, from, n); else |
