From ba755f8ec80fdbf2b5212622eabf7355464c6327 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Thu, 12 Apr 2007 20:02:54 +0900 Subject: [MIPS] Fix BUG(), BUG_ON() handling With commit 63dc68a8cf60cb110b147dab1704d990808b39e2, kernel can not handle BUG() and BUG_ON() properly since get_user() returns false for kernel code. Use __get_user() to skip unnecessary access_ok(). This patch also make BRK_BUG code encoded in the TNE instruction. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- arch/mips/kernel/traps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/mips/kernel') diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 6b356f62289..493cb29b8a4 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -650,7 +650,7 @@ asmlinkage void do_bp(struct pt_regs *regs) unsigned int opcode, bcode; siginfo_t info; - if (get_user(opcode, (unsigned int __user *) exception_epc(regs))) + if (__get_user(opcode, (unsigned int __user *) exception_epc(regs))) goto out_sigsegv; /* @@ -700,7 +700,7 @@ asmlinkage void do_tr(struct pt_regs *regs) unsigned int opcode, tcode = 0; siginfo_t info; - if (get_user(opcode, (unsigned int __user *) exception_epc(regs))) + if (__get_user(opcode, (unsigned int __user *) exception_epc(regs))) goto out_sigsegv; /* Immediate versions don't provide a code. */ -- cgit v1.2.3