d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Grab Giant around postsig() since sendsig() can call into the vm to

Browse Source 
grow the stack and we already needed Giant for KTRACE.
This commit is contained in:
John Baldwin 2001-07-03 05:27:53 +00:00
parent aa5d2a75d8
commit 64acb05b1c
2 changed files with 2 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sys/kern/kern_sig.c
View File

@ -1535,11 +1535,6 @@ postsig(sig)
KASSERT(sig != 0, ("postsig"));
PROC_LOCK_ASSERT(p, MA_OWNED);
#ifdef KTRACE
PROC_UNLOCK(p);
mtx_lock(&Giant);
PROC_LOCK(p);
#endif
ps = p->p_sigacts;
SIGDELSET(p->p_siglist, sig);
action = ps->ps_sigact[_SIG_IDX(sig)];
@ -1547,7 +1542,6 @@ postsig(sig)
if (KTRPOINT(p, KTR_PSIG))
ktrpsig(p->p_tracep, sig, action, p->p_flag & P_OLDMASK ?
&p->p_oldsigmask : &p->p_sigmask, 0);
mtx_unlock(&Giant);
#endif
_STOPEVENT(p, S_SIG, sig);

2
sys/kern/subr_trap.c
View File

@ -67,9 +67,11 @@ userret(p, frame, oticks)
{
int sig;
mtx_lock(&Giant);
PROC_LOCK(p);
while ((sig = CURSIG(p)) != 0)
postsig(sig);
mtx_unlock(&Giant);
mtx_lock_spin(&sched_lock);
PROC_UNLOCK_NOSWITCH(p);