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ksiginfo_put: protect queue operation with splsoftclock(), since it can

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be called from timer interrupts.
This commit is contained in:
pk 2003-10-12 14:32:05 +00:00
parent 899a030145
commit a749472593
1 changed files with 8 additions and 5 deletions
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13
sys/kern/kern_sig.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_sig.c,v 1.166 2003/10/08 00:28:42 thorpej Exp $ */
/* $NetBSD: kern_sig.c,v 1.167 2003/10/12 14:32:05 pk Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_sig.c,v 1.166 2003/10/08 00:28:42 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_sig.c,v 1.167 2003/10/12 14:32:05 pk Exp $");
#include "opt_ktrace.h"
#include "opt_compat_sunos.h"
@ -137,10 +137,12 @@ ksiginfo_put(struct proc *p, const ksiginfo_t *ksi)
{
ksiginfo_t *kp;
struct sigaction *sa = &SIGACTION_PS(p->p_sigacts, ksi->ksi_signo);
int s;
if ((sa->sa_flags & SA_SIGINFO) == 0)
return;
s = splsoftclock();
simple_lock(&p->p_sigctx.ps_silock);
#ifdef notyet /* XXX: QUEUING */
if (ksi->ksi_signo < SIGRTMIN)
@ -152,8 +154,7 @@ ksiginfo_put(struct proc *p, const ksiginfo_t *ksi)
(void)memcpy(&sv, &kp->ksi_list, sizeof(sv));
*kp = *ksi;
(void)memcpy(&kp->ksi_list, &sv, sizeof(sv));
simple_unlock(&p->p_sigctx.ps_silock);
return;
goto out;
}
}
}
@ -163,11 +164,13 @@ ksiginfo_put(struct proc *p, const ksiginfo_t *ksi)
printf("Out of memory allocating siginfo for pid %d\n",
p->p_pid);
#endif
return;
goto out;
}
*kp = *ksi;
CIRCLEQ_INSERT_TAIL(&p->p_sigctx.ps_siginfo, kp, ksi_list);
out:
simple_unlock(&p->p_sigctx.ps_silock);
splx(s);
}
/*