CVS commit: src/sys/arch/x86/x86

["Andrew Doran" <ad%netbsd.org@localhost>]

Module Name:    src
Committed By:   ad
Date:           Fri May 29 22:40:16 UTC 2020

Modified Files:
        src/sys/arch/x86/x86: pmap.c

Log Message:
Reported-by: syzbot+fd9be59aa613bbf4eba8%syzkaller.appspotmail.com@localhost
Reported-by: syzbot+15dd4dbac6ed159faa4a%syzkaller.appspotmail.com@localhost
Reported-by: syzbot+38fa02d3b0e46e57c156%syzkaller.appspotmail.com@localhost

pmap_remove_all(): need to drain PV pages only after the PTEs are unmapped,
otherwise there can be a context switch with them mapped in.  XXX amd64
should use the direct map.


To generate a diff of this commit:
cvs rdiff -u -r1.396 -r1.397 src/sys/arch/x86/x86/pmap.c

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