CVS commit: src/sys/arch/vax/vax

["Hans Rosenfeld" <hans%netbsd.org@localhost>]

Module Name:    src
Committed By:   hans
Date:           Fri Feb 28 20:11:21 UTC 2025

Modified Files:
        src/sys/arch/vax/vax: vm_machdep.c

Log Message:
vax: explicitly zero AP and FP in the CALLS frame in cpu_lwp_fork()

This prevents a recursive panic when ddb(4) tries to trace the stack
back across cpu_lwp_bootstrap(). The CALLS frame in question is put
in place by cpu_lwp_fork() to make it look as if cpu_lwp_bootstrap()
was called from sret, which is detected by db_dump_stack() but only
if the FP of the frame is also 0.


To generate a diff of this commit:
cvs rdiff -u -r1.118 -r1.119 src/sys/arch/vax/vax/vm_machdep.c

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