diff options
| author |   visa <visa@openbsd.org> | 2015-08-03 13:32:15 +0000 |
|---|---|---|
| committer | visa <visa@openbsd.org> | 2015-08-03 13:32:15 +0000 |
| commit | f11c78bfd1836c2c2b05470f91710ca898e5f734 (patch) | |
| tree | 914da7d6b3e95370aeb8e92beee96da459b18f17 /sys | |
| parent | "ls" requires an argument. (diff) | |
| download | wireguard-openbsd-f11c78bfd1836c2c2b05470f91710ca898e5f734.tar.xz wireguard-openbsd-f11c78bfd1836c2c2b05470f91710ca898e5f734.zip | |
On mips64, enable IPIs before calling refreshcreds() in trap(), to
avoid a potential deadlock.
ok miod@, deraadt@
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/mips64/mips64/trap.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/sys/arch/mips64/mips64/trap.c b/sys/arch/mips64/mips64/trap.c index 47dc02ba01f..f8e20b5326c 100644 --- a/sys/arch/mips64/mips64/trap.c +++ b/sys/arch/mips64/mips64/trap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: trap.c,v 1.107 2015/07/19 17:00:39 visa Exp $ */ +/* $OpenBSD: trap.c,v 1.108 2015/08/03 13:32:15 visa Exp $ */ /* * Copyright (c) 1988 University of Utah. @@ -181,10 +181,8 @@ trap(struct trap_frame *trapframe) if (type != T_SYSCALL) #endif atomic_inc_int(&uvmexp.traps); - if (USERMODE(trapframe->sr)) { + if (USERMODE(trapframe->sr)) type |= T_USER; - refreshcreds(p); - } /* * Enable hardware interrupts if they were on before the trap; @@ -208,6 +206,9 @@ trap(struct trap_frame *trapframe) break; } + if (type & T_USER) + refreshcreds(p); + #ifdef CPU_R8000 /* * Some exception causes on R8000 are actually detected by external |