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authorQiaowei Ren <qiaowei.ren@intel.com>2014-11-14 07:18:19 -0800
committerThomas Gleixner <tglx@linutronix.de>2014-11-18 00:58:53 +0100
commitee1b58d36aa1b5a79eaba11f5c3633c88231da83 (patch)
treec27ee172205f77faf191d3112b5a88d688c722c4 /kernel/signal.c
parent62e7759b1bdaf9b753c3724a56fcbe3235ebd5f3 (diff)
downloadlinux-ee1b58d36aa1b5a79eaba11f5c3633c88231da83.tar.bz2
mpx: Extend siginfo structure to include bound violation information
This patch adds new fields about bound violation into siginfo structure. si_lower and si_upper are respectively lower bound and upper bound when bound violation is caused. Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: linux-mm@kvack.org Cc: linux-mips@linux-mips.org Cc: Dave Hansen <dave@sr71.net> Link: http://lkml.kernel.org/r/20141114151819.1908C900@viggo.jf.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 8f0876f9f6dd..2c403a4c8bee 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -2748,6 +2748,10 @@ int copy_siginfo_to_user(siginfo_t __user *to, const siginfo_t *from)
if (from->si_code == BUS_MCEERR_AR || from->si_code == BUS_MCEERR_AO)
err |= __put_user(from->si_addr_lsb, &to->si_addr_lsb);
#endif
+#ifdef SEGV_BNDERR
+ err |= __put_user(from->si_lower, &to->si_lower);
+ err |= __put_user(from->si_upper, &to->si_upper);
+#endif
break;
case __SI_CHLD:
err |= __put_user(from->si_pid, &to->si_pid);