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

Lock Giant in postsig() for the KTRACE case as ktrpsig() needs Giant when

Browse Source 
it writes out to the trace file.

Reported by:	peter, gallatin, and others
This commit is contained in:
jhb 2001-06-18 19:23:43 +00:00
parent 106b33e493
commit 1852c17085
1 changed files with 4 additions and 0 deletions

4
sys/kern/kern_sig.c

@ -1536,6 +1536,9 @@ postsig(sig)
KASSERT(sig != 0, ("postsig"));
#ifdef KTRACE
mtx_lock(&Giant);
#endif
PROC_LOCK(p);
ps = p->p_sigacts;
SIGDELSET(p->p_siglist, sig);
@ -1544,6 +1547,7 @@ 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);