https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227404
--- Comment #8 from commit-h...@freebsd.org --- A commit references this bug: Author: tijl Date: Sun Apr 22 16:05:30 UTC 2018 New revision: 332871 URL: https://svnweb.freebsd.org/changeset/base/332871 Log: Make bufdaemon and bufspacedaemon use kthread_suspend_check instead of kproc_suspend_check. In r329612 bufspacedaemon was turned into a thread of the bufdaemon process causing both to call kproc_suspend_check with the same proc argument and that function contains the following while loop: while (SIGISMEMBER(p->p_siglist, SIGSTOP)) { wakeup(&p->p_siglist); msleep(&p->p_siglist, &p->p_mtx, PPAUSE, "kpsusp", 0); } So one thread wakes up the other and the other wakes up the first again, locking up UP machines on shutdown. Also register the shutdown handlers with SHUTDOWN_PRI_LAST + 100 so they run after the syncer has shutdown, because the syncer can cause a situation where bufdaemon help is needed to proceed. PR: 227404 Reviewed by: kib Tested by: cy, rmacklem Changes: head/sys/kern/vfs_bio.c -- You are receiving this mail because: You are on the CC list for the bug. You are the assignee for the bug. _______________________________________________ freebsd-bugs@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-bugs To unsubscribe, send any mail to "freebsd-bugs-unsubscr...@freebsd.org"
