summaryrefslogtreecommitdiff
path: root/arch/x86/ia32
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/ia32')
-rw-r--r--arch/x86/ia32/ia32_signal.c31
-rw-r--r--arch/x86/ia32/ia32entry.S6
-rw-r--r--arch/x86/ia32/sys_ia32.c2
3 files changed, 26 insertions, 13 deletions
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index 673ac9b63d6b..efc6a958b71d 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -32,6 +32,7 @@
#include <asm/sigframe.h>
#include <asm/sighandling.h>
#include <asm/sys_ia32.h>
+#include <asm/smap.h>
#define FIX_EFLAGS __FIX_EFLAGS
@@ -162,7 +163,8 @@ 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)))
@@ -250,11 +252,12 @@ static int ia32_restore_sigcontext(struct pt_regs *regs,
get_user_ex(tmp, &sc->fpstate);
buf = compat_ptr(tmp);
- err |= restore_i387_xstate_ia32(buf);
get_user_ex(*pax, &sc->ax);
} get_user_catch(err);
+ err |= restore_xstate_sig(buf, 1);
+
return err;
}
@@ -361,7 +364,7 @@ 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;
@@ -381,9 +384,12 @@ static void __user *get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
sp = (unsigned long) ka->sa.sa_restorer;
if (used_math()) {
- sp = sp - sig_xstate_ia32_size;
- *fpstate = (struct _fpstate_ia32 *) sp;
- if (save_i387_xstate_ia32(*fpstate) < 0)
+ unsigned long fx_aligned, math_size;
+
+ sp = alloc_mathframe(sp, 1, &fx_aligned, &math_size);
+ *fpstate = (struct _fpstate_ia32 __user *) sp;
+ if (save_xstate_sig(*fpstate, (void __user *)fx_aligned,
+ math_size) < 0)
return (void __user *) -1L;
}
@@ -448,7 +454,7 @@ 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)
@@ -502,7 +508,6 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
put_user_ex(sig, &frame->sig);
put_user_ex(ptr_to_compat(&frame->info), &frame->pinfo);
put_user_ex(ptr_to_compat(&frame->uc), &frame->puc);
- err |= copy_siginfo_to_user32(&frame->info, info);
/* Create the ucontext. */
if (cpu_has_xsave)
@@ -514,9 +519,6 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
put_user_ex(sas_ss_flags(regs->sp),
&frame->uc.uc_stack.ss_flags);
put_user_ex(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
- err |= ia32_setup_sigcontext(&frame->uc.uc_mcontext, fpstate,
- regs, set->sig[0]);
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (ka->sa.sa_flags & SA_RESTORER)
restorer = ka->sa.sa_restorer;
@@ -529,9 +531,14 @@ 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);
+ err |= copy_siginfo_to_user32(&frame->info, info);
+ err |= ia32_setup_sigcontext(&frame->uc.uc_mcontext, fpstate,
+ regs, set->sig[0]);
+ err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+
if (err)
return -EFAULT;
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index e75f941bd2b2..076745fc8045 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -14,6 +14,7 @@
#include <asm/segment.h>
#include <asm/irqflags.h>
#include <asm/asm.h>
+#include <asm/smap.h>
#include <linux/linkage.h>
#include <linux/err.h>
@@ -146,8 +147,10 @@ ENTRY(ia32_sysenter_target)
SAVE_ARGS 0,1,0
/* no need to do an access_ok check here because rbp has been
32bit zero extended */
+ ASM_STAC
1: movl (%rbp),%ebp
_ASM_EXTABLE(1b,ia32_badarg)
+ ASM_CLAC
orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
CFI_REMEMBER_STATE
@@ -301,8 +304,10 @@ ENTRY(ia32_cstar_target)
/* no need to do an access_ok check here because r8 has been
32bit zero extended */
/* hardware stack frame is complete now */
+ ASM_STAC
1: movl (%r8),%r9d
_ASM_EXTABLE(1b,ia32_badarg)
+ ASM_CLAC
orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
CFI_REMEMBER_STATE
@@ -365,6 +370,7 @@ cstar_tracesys:
END(ia32_cstar_target)
ia32_badarg:
+ ASM_CLAC
movq $-EFAULT,%rax
jmp ia32_sysret
CFI_ENDPROC
diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
index 6b31144589d0..86d68d1c8806 100644
--- a/arch/x86/ia32/sys_ia32.c
+++ b/arch/x86/ia32/sys_ia32.c
@@ -287,7 +287,7 @@ asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act,
return ret;
}
-asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr,
+asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int __user *stat_addr,
int options)
{
return compat_sys_wait4(pid, stat_addr, options, NULL);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 07:36:01 +0000