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signal/nds32: Use force_sig(SIGILL) in do_revisn 

As originally committed do_revisn would deliver a siginfo for SIGILL
with an si_code composed of random stack contents.  That makes no
sense and is not something userspace can depend on.  So simplify
the code and just use "force_sig(SIG_ILL, current)" instead.

Fixes: 2923f5ea77 ("nds32: Exception handling")
Cc: Vincent Chen <vincentc@andestech.com>
Cc: Greentime Hu <greentime@andestech.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
hifive-unleashed-5.1
Eric W. Biederman 2018-04-17 15:23:48 -05:00
parent be5c2ff06c
commit f6ed1ecad5
1 changed files with 1 additions and 4 deletions
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5
arch/nds32/kernel/traps.c
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@ -356,14 +356,11 @@ void do_dispatch_tlb_misc(unsigned long entry, unsigned long addr,
void do_revinsn(struct pt_regs *regs)
{
siginfo_t si;
pr_emerg("Reserved Instruction\n");
show_regs(regs);
if (!user_mode(regs))
do_exit(SIGILL);
si.si_signo = SIGILL;
si.si_errno = 0;
force_sig_info(SIGILL, &si, current);
force_sig(SIGILL, current);
}
#ifdef CONFIG_ALIGNMENT_TRAP