From 2ba3e3e65cf182436757ba13ea8d564e2950fb56 Mon Sep 17 00:00:00 2001 From: Keith Owens Date: Thu, 30 Jun 2005 22:53:00 -0700 Subject: [PATCH] [IA64] restore_sigcontext is not preempt safe restore_sigcontext calls ia64_set_local_fpu_owner() which requires that preempt be disabled. Signed-off-by: Keith Owens Signed-off-by: Tony Luck --- arch/ia64/kernel/signal.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c index edd9f07860..b8a0a7d257 100644 --- a/arch/ia64/kernel/signal.c +++ b/arch/ia64/kernel/signal.c @@ -143,6 +143,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) __copy_from_user(current->thread.fph, &sc->sc_fr[32], 96*16); psr->mfh = 0; /* drop signal handler's fph contents... */ + preempt_disable(); if (psr->dfh) ia64_drop_fpu(current); else { @@ -150,6 +151,7 @@ restore_sigcontext (struct sigcontext __user *sc, struct sigscratch *scr) __ia64_load_fpu(current->thread.fph); ia64_set_local_fpu_owner(current); } + preempt_enable(); } return err; } -- 2.39.5