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x86/signals: 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 * [...] Signed-off-by: Mathias Krause <minipli@googlemail.com> Cc: Oleg Nesterov <oleg@redhat.com> Link: http://lkml.kernel.org/r/1346621506-30857-4-git-send-email-minipli@googlemail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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1 changed files with 6 additions and 5 deletions
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@ -162,7 +162,8 @@ asmlinkage long sys32_sigaltstack(const stack_ia32_t __user *uss_ptr,
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}
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seg = get_fs();
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set_fs(KERNEL_DS);
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ret = do_sigaltstack(uss_ptr ? &uss : NULL, &uoss, regs->sp);
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ret = do_sigaltstack((stack_t __force __user *) (uss_ptr ? &uss : NULL),
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(stack_t __force __user *) &uoss, regs->sp);
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set_fs(seg);
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if (ret >= 0 && uoss_ptr) {
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if (!access_ok(VERIFY_WRITE, uoss_ptr, sizeof(stack_ia32_t)))
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@ -361,7 +362,7 @@ static int ia32_setup_sigcontext(struct sigcontext_ia32 __user *sc,
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*/
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static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
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size_t frame_size,
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void **fpstate)
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void __user **fpstate)
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{
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unsigned long sp;
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@ -382,7 +383,7 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
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if (used_math()) {
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sp = sp - sig_xstate_ia32_size;
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*fpstate = (struct _fpstate_ia32 *) sp;
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*fpstate = (struct _fpstate_ia32 __user *) sp;
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if (save_i387_xstate_ia32(*fpstate) < 0)
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return (void __user *) -1L;
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}
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@ -448,7 +449,7 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka,
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* These are actually not used anymore, but left because some
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* gdb versions depend on them as a marker.
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*/
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put_user_ex(*((u64 *)&code), (u64 *)frame->retcode);
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put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
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} put_user_catch(err);
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if (err)
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@ -529,7 +530,7 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
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* Not actually used anymore, but left because some gdb
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* versions need it.
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*/
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put_user_ex(*((u64 *)&code), (u64 *)frame->retcode);
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put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
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} put_user_catch(err);
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if (err)
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