CVS commit: src/sys/kern

["Jason R Thorpe" <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Tue Sep 28 14:52:22 UTC 2021

Modified Files:
        src/sys/kern: kern_exec.c

Log Message:
In the exec path, multi-LWP programs dispose of their robust futexes
by calling exit_lwps(), except for the last LWP.  So, dispose of that
LWP's robust futexes right before calling lwp_ctl_exit().

Fixes a "WARNING: ... : unmapped robust futex list head" message when
running bash under Linux emulation on aarch64.

Root caused and patch proposed by ryo@.  I have tweaked it slightly,
just to add a comment and a KASSERT().


To generate a diff of this commit:
cvs rdiff -u -r1.506 -r1.507 src/sys/kern/kern_exec.c

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