diff options
| author | Alexander Nyberg <alexn@telia.com> | 2005-04-21 16:59:51 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-21 16:59:51 +0200 |
| commit | 3a6fd752a50af92765853879f4a11cc0cfcd0320 (patch) | |
| tree | dc79d50fb8d8c74259945b8a044f93982a9289bd /arch/x86_64/lib/getuser.S | |
| parent | Merge rsync://rsync.kernel.org/pub/linux/kernel/people/davem/sparc-2.6.git (diff) | |
| download | linux-3a6fd752a50af92765853879f4a11cc0cfcd0320.tar.xz linux-3a6fd752a50af92765853879f4a11cc0cfcd0320.zip | |
[PATCH] x86_64: Bug in new out of line put_user()
The new out of line put_user() assembly on x86_64 changes %rcx without
telling GCC about it causing things like:
http://bugme.osdl.org/show_bug.cgi?id=4515
See to it that %rcx is not changed (made it consistent with get_user()).
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: ak@suse.de
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/lib/getuser.S')
| -rw-r--r-- | arch/x86_64/lib/getuser.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86_64/lib/getuser.S b/arch/x86_64/lib/getuser.S index f94ea8a44051..f80bafee8669 100644 --- a/arch/x86_64/lib/getuser.S +++ b/arch/x86_64/lib/getuser.S @@ -78,9 +78,9 @@ __get_user_4: __get_user_8: GET_THREAD_INFO(%r8) addq $7,%rcx - jc bad_get_user + jc 40f cmpq threadinfo_addr_limit(%r8),%rcx - jae bad_get_user + jae 40f subq $7,%rcx 4: movq (%rcx),%rdx xorl %eax,%eax |