CVS commit: [netbsd-8] src/sys/dev/pci

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Mon Jul 15 08:23:23 UTC 2019

Modified Files:
        src/sys/dev/pci [netbsd-8]: vioscsi.c

Log Message:
Pull up following revision(s) (requested by maxv in ticket #1289):

        sys/dev/pci/vioscsi.c: revision 1.21

Fix use-after-free. If we're not polling, virtio_enqueue_commit() will send
the transaction, and it means 'xs' can be immediately freed. So, save the
value of xs_control beforehand.

Detected by KASAN, ok jdolecek@.
Fixes PR/54008


To generate a diff of this commit:
cvs rdiff -u -r1.19 -r1.19.2.1 src/sys/dev/pci/vioscsi.c

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