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authorGuo Ren <ren_guo@c-sky.com>2019-05-10 12:07:01 +0300
committerGuo Ren <ren_guo@c-sky.com>2019-07-19 09:21:36 +0300
commit3158d28953fcd85492b28b1d2d5a5e20bb62a626 (patch)
tree9dbd456c78546d59f598a1184e1c583d5e897305
parent1994cc49f18b47a18dfb0371063fc9d80c464b33 (diff)
downloadlinux-3158d28953fcd85492b28b1d2d5a5e20bb62a626.tar.xz
csky: Fixup no panic in kernel for some traps
These traps couldn't be hanppen in kernel and we must panic there not send a signal to userspace. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Cc: Arnd Bergmann <arnd@arndb.de>
-rw-r--r--arch/csky/kernel/traps.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/csky/kernel/traps.c b/arch/csky/kernel/traps.c
index f487a9b996ae..6129f30faf6e 100644
--- a/arch/csky/kernel/traps.c
+++ b/arch/csky/kernel/traps.c
@@ -120,6 +120,7 @@ asmlinkage void trap_c(struct pt_regs *regs)
switch (vector) {
case VEC_ZERODIV:
+ die_if_kernel("Kernel mode ZERO DIV", regs, vector);
sig = SIGFPE;
break;
/* ptrace */
@@ -128,6 +129,7 @@ asmlinkage void trap_c(struct pt_regs *regs)
sig = SIGTRAP;
break;
case VEC_ILLEGAL:
+ die_if_kernel("Kernel mode ILLEGAL", regs, vector);
#ifndef CONFIG_CPU_NO_USER_BKPT
if (*(uint16_t *)instruction_pointer(regs) != USR_BKPT)
#endif
@@ -139,6 +141,7 @@ asmlinkage void trap_c(struct pt_regs *regs)
case VEC_TRAP1:
/* jtagserver breakpoint */
case VEC_BREAKPOINT:
+ die_if_kernel("Kernel mode BKPT", regs, vector);
info.si_code = TRAP_BRKPT;
sig = SIGTRAP;
break;
@@ -150,8 +153,10 @@ asmlinkage void trap_c(struct pt_regs *regs)
#endif
#ifdef CONFIG_CPU_HAS_FPU
case VEC_FPE:
+ die_if_kernel("Kernel mode FPE", regs, vector);
return fpu_fpe(regs);
case VEC_PRIV:
+ die_if_kernel("Kernel mode PRIV", regs, vector);
if (fpu_libc_helper(regs))
return;
#endif