CVS commit: src/sys/kern

["Juergen Hannken-Illjes" <hannken%netbsd.org@localhost>]

Module Name:    src
Committed By:   hannken
Date:           Fri Jul  8 07:42:47 UTC 2022

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

Log Message:
While one thread runs vgone() it is possible for another thread to grab
a "v_mount" that will be freed before it uses this mount for fstrans_start().

Add a hashtab to lookup our private mount data "fstrans_mount_info" and
use "mp" as an opaque key for lookup.

Reported-by: syzbot+54dc9ac0804a97b59bc6%syzkaller.appspotmail.com@localhost


To generate a diff of this commit:
cvs rdiff -u -r1.65 -r1.66 src/sys/kern/vfs_trans.c

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