CVS commit: src/sys/rump/librump/rumpkern

["Ryota Ozaki" <ozaki-r%netbsd.org@localhost>]

Module Name:    src
Committed By:   ozaki-r
Date:           Wed Nov  2 09:01:42 UTC 2022

Modified Files:
        src/sys/rump/librump/rumpkern: lwproc.c

Log Message:
rump: don't touch p_nlwps without holding p_lock

There was a race condition on p_nlwps.  Heavy thread switching could
cause a kernel panic like:
  panic: kernel diagnostic assertion "LIST_EMPTY(&p->p_lwps)" failed:
  file "(hidden)/src/lib/librump/../../sys/rump/librump/rumpkern/lwproc.c", line 177


To generate a diff of this commit:
cvs rdiff -u -r1.51 -r1.52 src/sys/rump/librump/rumpkern/lwproc.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.