Date: Wed, 1 Jul 2020 08:23:57 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362829 - head/sys/compat/linuxkpi/common/src Message-ID: <202007010823.0618Nvcu028770@repo.freebsd.org>
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Author: hselasky Date: Wed Jul 1 08:23:57 2020 New Revision: 362829 URL: https://svnweb.freebsd.org/changeset/base/362829 Log: The "pid" field in the LinuxKPI task struct is typically set to the thread ID 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 Modified: head/sys/compat/linuxkpi/common/src/linux_current.c Modified: head/sys/compat/linuxkpi/common/src/linux_current.c ============================================================================== --- head/sys/compat/linuxkpi/common/src/linux_current.c Wed Jul 1 05:59:08 2020 (r362828) +++ head/sys/compat/linuxkpi/common/src/linux_current.c Wed Jul 1 08:23:57 2020 (r362829) @@ -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;
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