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

Clear KSE thread flags after KSE thread mode is ended. The side effect

Browse Source 
of not clearing the flags for execv() syscall will result that a new
program runs in KSE thread mode without enabling it.

Submitted by: tjr
Modified by: davidxu
This commit is contained in:
davidxu 2004-05-21 14:50:23 +00:00
parent eda6d52241
commit e7578c3795
4 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sys/kern/kern_exec.c
View File

@ -266,6 +266,9 @@ kern_execve(td, fname, argv, envv, mac_p)
*/ */
p->p_flag &= ~P_SA; p->p_flag &= ~P_SA;
td->td_mailbox = NULL; td->td_mailbox = NULL;
mtx_lock_spin(&sched_lock);
td->td_flags &= ~TDF_SA;
mtx_unlock_spin(&sched_lock);
thread_single_end(); thread_single_end();
} }
p->p_flag |= P_INEXEC; p->p_flag |= P_INEXEC;

3
sys/kern/kern_exit.c
View File

@ -162,6 +162,9 @@ exit1(struct thread *td, int rv)
* Turn off threading support. * Turn off threading support.
*/ */
p->p_flag &= ~P_SA; p->p_flag &= ~P_SA;
mtx_lock_spin(&sched_lock);
td->td_flags &= ~TDF_SA;
mtx_unlock_spin(&sched_lock);
thread_single_end(); /* Don't need this any more. */ thread_single_end(); /* Don't need this any more. */
} }

2
sys/kern/kern_kse.c
View File

@ -2217,7 +2217,7 @@ thread_single_end(void)
td = curthread; td = curthread;
p = td->td_proc; p = td->td_proc;
PROC_LOCK_ASSERT(p, MA_OWNED); PROC_LOCK_ASSERT(p, MA_OWNED);
p->p_flag &= ~P_STOPPED_SINGLE; p->p_flag &= ~(P_STOPPED_SINGLE | P_SINGLE_EXIT);
mtx_lock_spin(&sched_lock); mtx_lock_spin(&sched_lock);
p->p_singlethread = NULL; p->p_singlethread = NULL;
/* /*

2
sys/kern/kern_thread.c
View File

@ -2217,7 +2217,7 @@ thread_single_end(void)
td = curthread; td = curthread;
p = td->td_proc; p = td->td_proc;
PROC_LOCK_ASSERT(p, MA_OWNED); PROC_LOCK_ASSERT(p, MA_OWNED);
p->p_flag &= ~P_STOPPED_SINGLE; p->p_flag &= ~(P_STOPPED_SINGLE | P_SINGLE_EXIT);
mtx_lock_spin(&sched_lock); mtx_lock_spin(&sched_lock);
p->p_singlethread = NULL; p->p_singlethread = NULL;
/* /*