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authorEric W. Biederman <ebiederm@xmission.com>2018-04-15 09:53:50 -0500
committerEric W. Biederman <ebiederm@xmission.com>2018-04-17 17:41:50 -0500
commit5278c0e8146a77249372295b9cf5b9fcb24492a8 (patch)
tree02609d23e8c5a77bea5d4d268019190e90a28496 /arch/alpha/kernel/osf_sys.c
parentLinux 4.17-rc1 (diff)
downloadlinux-dev-5278c0e8146a77249372295b9cf5b9fcb24492a8.tar.xz
linux-dev-5278c0e8146a77249372295b9cf5b9fcb24492a8.zip
signal/alpha: Document a conflict with SI_USER for SIGFPE
Setting si_code to 0 is the same as setting si_code to SI_USER. This is the same si_code as SI_USER. Posix and common sense requires that SI_USER not be a signal specific si_code. As such this use of 0 for the si_code is a pretty horribly broken ABI. Cc: Helge Deller <deller@gmx.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: linux-alpha@vger.kernel.org History Tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/history.git Ref: 0a635c7a84cf ("Fill in siginfo_t.") Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to '')
-rw-r--r--arch/alpha/kernel/osf_sys.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 89faa6f4de47..2e02aef5a334 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -872,7 +872,7 @@ SYSCALL_DEFINE5(osf_setsysinfo, unsigned long, op, void __user *, buffer,
fex = (exc >> IEEE_STATUS_TO_EXCSUM_SHIFT) & swcr;
if (fex) {
siginfo_t info;
- int si_code = 0;
+ int si_code = FPE_FIXME;
if (fex & IEEE_TRAP_ENABLE_DNO) si_code = FPE_FLTUND;
if (fex & IEEE_TRAP_ENABLE_INE) si_code = FPE_FLTRES;