diff options
| author |   kettenis <kettenis@openbsd.org> | 2011-05-10 11:11:56 +0000 |
|---|---|---|
| committer | kettenis <kettenis@openbsd.org> | 2011-05-10 11:11:56 +0000 |
| commit | 9221b3146048b33aa11db604448e2401c7d251b0 (patch) | |
| tree | ceea96a17cdc58f334b386c8d30926b39e31e614 /sys | |
| parent | revert a mistake commit (diff) | |
| download | wireguard-openbsd-9221b3146048b33aa11db604448e2401c7d251b0.tar.xz wireguard-openbsd-9221b3146048b33aa11db604448e2401c7d251b0.zip | |
Fix deadlock (re)introduced by the previous commit by explicitly re-enabling
interrupts in the code that cleans up after we fault during return to user
mode. Handling traps with interrupts blocked is *not* ok!
ok krw@
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/i386/i386/locore.s | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/arch/i386/i386/locore.s b/sys/arch/i386/i386/locore.s index a4936ee763b..dfd962a6721 100644 --- a/sys/arch/i386/i386/locore.s +++ b/sys/arch/i386/i386/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.134 2011/04/27 11:30:53 bluhm Exp $ */ +/* $OpenBSD: locore.s,v 1.135 2011/05/10 11:11:56 kettenis Exp $ */ /* $NetBSD: locore.s,v 1.145 1996/05/03 19:41:19 christos Exp $ */ /*- @@ -1461,6 +1461,7 @@ IDTVEC(align) * This will cause the process to get a SIGBUS. */ NENTRY(resume_iret) + sti ZTRAP(T_PROTFLT) NENTRY(resume_pop_ds) pushl %es @@ -1476,6 +1477,7 @@ NENTRY(resume_pop_gs) movw %ax,%fs NENTRY(resume_pop_fs) movl $T_PROTFLT,TF_TRAPNO(%esp) + sti jmp calltrap NENTRY(alltraps) |