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The "pid" field in the LinuxKPI task struct is typically set to the thread ID

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and not the process ID. Make sure the linux_task_exiting() function uses tdfind()
to lookup the BSD procedure structure pointer by the "pid" field, and only
fallback to pfind() when no match is found! This makes linux_task_exiting()
in line with the rest of the code.

Differential Revision: https://reviews.freebsd.org/D25509
Submitted by:	Greg V <greg@unrelenting.technology>
MFC after:	1 week
Sponsored by:	Mellanox Technologies
This commit is contained in:
Hans Petter Selasky 2020-07-01 08:23:57 +00:00
parent 5d1c042d32
commit 9a4e535b39
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=362829
1 changed files with 11 additions and 1 deletions
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12
sys/compat/linuxkpi/common/src/linux_current.c
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@ -219,11 +219,21 @@ linux_get_pid_task(pid_t pid)
bool
linux_task_exiting(struct task_struct *task)
{
struct thread *td;
struct proc *p;
bool ret;
ret = false;
p = pfind(task->pid);
/* try to find corresponding thread */
td = tdfind(task->pid, -1);
if (td != NULL) {
p = td->td_proc;
} else {
/* try to find corresponding procedure */
p = pfind(task->pid);
}
if (p != NULL) {
if ((p->p_flag & P_WEXIT) != 0)
ret = true;