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Date: Sun, 2 Sep 2012 23:31:42 +0200
From: Mathias Krause <minipli@...glemail.com>
To: Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org,
Mathias Krause <minipli@...glemail.com>
Subject: [PATCH 3/7] x86: ia32_signal.c: add __user casts to fix sparse warnings
Fix the following sparse warnings by adding appropriate __user casts and
annotations:
ia32_signal.c:165:38: warning: incorrect type in argument 1 (different address spaces)
ia32_signal.c:165:38: expected struct sigaltstack const [noderef] [usertype] <asn:1>*<noident>
ia32_signal.c:165:38: got struct sigaltstack *
ia32_signal.c:165:54: warning: incorrect type in argument 2 (different address spaces)
ia32_signal.c:165:54: expected struct sigaltstack [noderef] [usertype] <asn:1>*<noident>
ia32_signal.c:165:54: got struct sigaltstack *<noident>
ia32_signal.c:386:43: warning: incorrect type in argument 1 (different address spaces)
ia32_signal.c:386:43: expected void [noderef] <asn:1>*buf
ia32_signal.c:386:43: got void *<noident>
ia32_signal.c:416:57: warning: incorrect type in argument 4 (different address spaces)
ia32_signal.c:416:57: expected void **fpstate
ia32_signal.c:416:57: got void [noderef] <asn:1>**<noident>
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: incorrect type in argument 1 (different address spaces)
ia32_signal.c:451:17: expected void const volatile [noderef] <asn:1>*<noident>
ia32_signal.c:451:17: got unsigned long long [usertype] *<noident>
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:451:17: warning: cast removes address space of expression
ia32_signal.c:496:57: warning: incorrect type in argument 4 (different address spaces)
ia32_signal.c:496:57: expected void **fpstate
ia32_signal.c:496:57: got void [noderef] <asn:1>**<noident>
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: incorrect type in argument 1 (different address spaces)
ia32_signal.c:532:17: expected void const volatile [noderef] <asn:1>*<noident>
ia32_signal.c:532:17: got unsigned long long [usertype] *<noident>
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
ia32_signal.c:532:17: warning: cast removes address space of expression
Signed-off-by: Mathias Krause <minipli@...glemail.com>
---
arch/x86/ia32/ia32_signal.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index 673ac9b..452d4dd 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -162,7 +162,8 @@ asmlinkage long sys32_sigaltstack(const stack_ia32_t __user *uss_ptr,
}
seg = get_fs();
set_fs(KERNEL_DS);
- ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->sp);
+ ret = do_sigaltstack((stack_t __force __user *) (uss_ptr ? &uss : NULL),
+ (stack_t __force __user *) &uoss, regs->sp);
set_fs(seg);
if (ret >= 0 && uoss_ptr) {
if (!access_ok(VERIFY_WRITE, uoss_ptr, sizeof(stack_ia32_t)))
@@ -361,7 +362,7 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
*/
static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
size_t frame_size,
- void **fpstate)
+ void __user **fpstate)
{
unsigned long sp;
@@ -382,7 +383,7 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
if (used_math()) {
sp = sp - sig_xstate_ia32_size;
- *fpstate = (struct _fpstate_ia32 *) sp;
+ *fpstate = (struct _fpstate_ia32 __user *) sp;
if (save_i387_xstate_ia32(*fpstate) < 0)
return (void __user *) -1L;
}
@@ -448,7 +449,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
* These are actually not used anymore, but left because some
* gdb versions depend on them as a marker.
*/
- put_user_ex(*((u64 *)&code), (u64 *)frame->retcode);
+ put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
} put_user_catch(err);
if (err)
@@ -529,7 +530,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
* Not actually used anymore, but left because some gdb
* versions need it.
*/
- put_user_ex(*((u64 *)&code), (u64 *)frame->retcode);
+ put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
} put_user_catch(err);
if (err)
--
1.7.10.4
--
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