Merge branch 'siginfo-si_trapno-for-v5.15' of git://git.kernel.org/pub/scm/linux...

[linux-2.6-microblaze.git] / kernel / signal.c

diff --git a/kernel/signal.c b/kernel/signal.c
index 52b6abe..65a5411 100644 (file)
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1213,7 +1213,7 @@ static inline bool has_si_pid_and_uid(struct kernel_siginfo *info)
        case SIL_FAULT_MCEERR:
        case SIL_FAULT_BNDERR:
        case SIL_FAULT_PKUERR:
-       case SIL_PERF_EVENT:
+       case SIL_FAULT_PERF_EVENT:
        case SIL_SYS:
                ret = false;
                break;
@@ -1681,7 +1681,6 @@ void force_sigsegv(int sig)
 }
 
 int force_sig_fault_to_task(int sig, int code, void __user *addr
-       ___ARCH_SI_TRAPNO(int trapno)
        ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr)
        , struct task_struct *t)
 {
@@ -1692,9 +1691,6 @@ int force_sig_fault_to_task(int sig, int code, void __user *addr
        info.si_errno = 0;
        info.si_code  = code;
        info.si_addr  = addr;
-#ifdef __ARCH_SI_TRAPNO
-       info.si_trapno = trapno;
-#endif
 #ifdef __ia64__
        info.si_imm = imm;
        info.si_flags = flags;
@@ -1704,16 +1700,13 @@ int force_sig_fault_to_task(int sig, int code, void __user *addr
 }
 
 int force_sig_fault(int sig, int code, void __user *addr
-       ___ARCH_SI_TRAPNO(int trapno)
        ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr))
 {
        return force_sig_fault_to_task(sig, code, addr
-                                      ___ARCH_SI_TRAPNO(trapno)
                                       ___ARCH_SI_IA64(imm, flags, isr), current);
 }
 
 int send_sig_fault(int sig, int code, void __user *addr
-       ___ARCH_SI_TRAPNO(int trapno)
        ___ARCH_SI_IA64(int imm, unsigned int flags, unsigned long isr)
        , struct task_struct *t)
 {
@@ -1724,9 +1717,6 @@ int send_sig_fault(int sig, int code, void __user *addr
        info.si_errno = 0;
        info.si_code  = code;
        info.si_addr  = addr;
-#ifdef __ARCH_SI_TRAPNO
-       info.si_trapno = trapno;
-#endif
 #ifdef __ia64__
        info.si_imm = imm;
        info.si_flags = flags;
@@ -1823,6 +1813,39 @@ int force_sig_ptrace_errno_trap(int errno, void __user *addr)
        return force_sig_info(&info);
 }
 
+/* For the rare architectures that include trap information using
+ * si_trapno.
+ */
+int force_sig_fault_trapno(int sig, int code, void __user *addr, int trapno)
+{
+       struct kernel_siginfo info;
+
+       clear_siginfo(&info);
+       info.si_signo = sig;
+       info.si_errno = 0;
+       info.si_code  = code;
+       info.si_addr  = addr;
+       info.si_trapno = trapno;
+       return force_sig_info(&info);
+}
+
+/* For the rare architectures that include trap information using
+ * si_trapno.
+ */
+int send_sig_fault_trapno(int sig, int code, void __user *addr, int trapno,
+                         struct task_struct *t)
+{
+       struct kernel_siginfo info;
+
+       clear_siginfo(&info);
+       info.si_signo = sig;
+       info.si_errno = 0;
+       info.si_code  = code;
+       info.si_addr  = addr;
+       info.si_trapno = trapno;
+       return send_sig_info(info.si_signo, &info, t);
+}
+
 int kill_pgrp(struct pid *pid, int sig, int priv)
 {
        int ret;
@@ -2572,7 +2595,7 @@ static void hide_si_addr_tag_bits(struct ksignal *ksig)
        case SIL_FAULT_MCEERR:
        case SIL_FAULT_BNDERR:
        case SIL_FAULT_PKUERR:
-       case SIL_PERF_EVENT:
+       case SIL_FAULT_PERF_EVENT:
                ksig->info.si_addr = arch_untagged_si_addr(
                        ksig->info.si_addr, ksig->sig, ksig->info.si_code);
                break;
@@ -3257,11 +3280,14 @@ enum siginfo_layout siginfo_layout(unsigned sig, int si_code)
                                layout = SIL_FAULT_PKUERR;
 #endif
                        else if ((sig == SIGTRAP) && (si_code == TRAP_PERF))
-                               layout = SIL_PERF_EVENT;
-#ifdef __ARCH_SI_TRAPNO
-                       else if (layout == SIL_FAULT)
+                               layout = SIL_FAULT_PERF_EVENT;
+                       else if (IS_ENABLED(CONFIG_SPARC) &&
+                                (sig == SIGILL) && (si_code == ILL_ILLTRP))
+                               layout = SIL_FAULT_TRAPNO;
+                       else if (IS_ENABLED(CONFIG_ALPHA) &&
+                                ((sig == SIGFPE) ||
+                                 ((sig == SIGTRAP) && (si_code == TRAP_UNK))))
                                layout = SIL_FAULT_TRAPNO;
-#endif
                }
                else if (si_code <= NSIGPOLL)
                        layout = SIL_POLL;
@@ -3383,7 +3409,7 @@ void copy_siginfo_to_external32(struct compat_siginfo *to,
                to->si_addr = ptr_to_compat(from->si_addr);
                to->si_pkey = from->si_pkey;
                break;
-       case SIL_PERF_EVENT:
+       case SIL_FAULT_PERF_EVENT:
                to->si_addr = ptr_to_compat(from->si_addr);
                to->si_perf_data = from->si_perf_data;
                to->si_perf_type = from->si_perf_type;
@@ -3460,7 +3486,7 @@ static int post_copy_siginfo_from_user32(kernel_siginfo_t *to,
                to->si_addr = compat_ptr(from->si_addr);
                to->si_pkey = from->si_pkey;
                break;
-       case SIL_PERF_EVENT:
+       case SIL_FAULT_PERF_EVENT:
                to->si_addr = compat_ptr(from->si_addr);
                to->si_perf_data = from->si_perf_data;
                to->si_perf_type = from->si_perf_type;