From: "Eric W. Biederman" <ebiederm@xmission.com>
To: linux-arch@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
"Eric W. Biederman" <ebiederm@xmission.com>,
Vincent Chen <vincentc@andestech.com>,
Greentime Hu <greentime@andestech.com>,
Arnd Bergmann <arnd@arndb.de>
Subject: [REVIEW][PATCH 05/17] signal/nds32: Use force_sig(SIGILL) in do_revisn
Date: Thu, 19 Apr 2018 20:03:56 -0500 [thread overview]
Message-ID: <20180420010408.24438-5-ebiederm@xmission.com> (raw)
In-Reply-To: <878t9ilmhv.fsf@xmission.com>
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: 2923f5ea7738 ("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>
---
arch/nds32/kernel/traps.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/arch/nds32/kernel/traps.c b/arch/nds32/kernel/traps.c
index 65961bf91d64..8e9a5b1f6234 100644
--- a/arch/nds32/kernel/traps.c
+++ b/arch/nds32/kernel/traps.c
@@ -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
--
2.14.1
next prev parent reply other threads:[~2018-04-20 1:03 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-20 1:01 [REVIEW][PATCH 00/17] siginfo bugfixes and cleanups Eric W. Biederman
2018-04-20 1:03 ` [REVIEW][PATCH 01/17] signal/alpha: Document a conflict with SI_USER for SIGFPE Eric W. Biederman
2018-04-20 1:03 ` [REVIEW][PATCH 02/17] sparc: fix compat siginfo ABI regression Eric W. Biederman
2018-04-20 1:03 ` [REVIEW][PATCH 03/17] signal/sh: Use force_sig_fault in hw_breakpoint_handler Eric W. Biederman
2018-04-20 1:03 ` [REVIEW][PATCH 04/17] signal/nds32: Use force_sig in unhandled_interruption and unhandled_exceptions Eric W. Biederman
2018-04-25 12:14 ` Vincent Chen
2018-04-20 1:03 ` Eric W. Biederman [this message]
2018-04-25 12:10 ` [REVIEW][PATCH 05/17] signal/nds32: Use force_sig(SIGILL) in do_revisn Vincent Chen
2018-04-25 16:13 ` [PATCH] signal/nds32: More information in do_revinsn Eric W. Biederman
2018-04-26 3:02 ` Vincent Chen
2018-04-20 1:03 ` [REVIEW][PATCH 06/17] signal: Ensure every siginfo we send has all bits initialized Eric W. Biederman
2018-04-20 1:03 ` [REVIEW][PATCH 07/17] signal: Reduce copy_siginfo_to_user to just copy_to_user Eric W. Biederman
2018-04-20 1:03 ` [REVIEW][PATCH 08/17] signal: Stop special casing TRAP_FIXME and FPE_FIXME in siginfo_layout Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 09/17] signal: Remove SEGV_BNDERR ifdefs Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 10/17] signal: Remove ifdefs for BUS_MCEERR_AR and BUS_MCEERR_AO Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 11/17] signal/alpha: Replace FPE_FIXME with FPE_FLTUNK Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 12/17] signal/ia64: " Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 13/17] signal/powerpc: " Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 14/17] signal/unicore32: Use FPE_FLTUNK instead of 0 in ucf64_raise_sigfpe Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 15/17] signal: Add TRAP_UNK si_code for undiagnosted trap exceptions Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 16/17] signal/alpha: Replace TRAP_FIXME with TRAP_UNK Eric W. Biederman
2018-04-20 1:04 ` [REVIEW][PATCH 17/17] signal/powerpc: " Eric W. Biederman
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