Date: Wed, 10 Jun 2009 13:57:36 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/fs/cd9660 cd9660_vnops.c src/sys/fs/devfs devfs_vnops.c src/sys/fs/pseudofs pseudofs_vnops.c Message-ID: <200906101357.n5ADvtvd067499@repoman.freebsd.org>
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kib 2009-06-10 13:57:36 UTC
FreeBSD src repository
Modified files:
sys/fs/cd9660 cd9660_vnops.c
sys/fs/devfs devfs_vnops.c
sys/fs/pseudofs pseudofs_vnops.c
Log:
SVN rev 193919 on 2009-06-10 13:57:36Z by kib
VOP_IOCTL takes unlocked vnode as an argument. Due to this, v_data may
be NULL or derefenced memory may become free at arbitrary moment.
Lock the vnode in cd9660, devfs and pseudofs implementation of VOP_IOCTL
to prevent reclaim; check whether the vnode was already reclaimed after
the lock is granted.
Reported by: georg at dts su
Reviewed by: des (pseudofs)
MFC after: 2 weeks
Revision Changes Path
1.122 +17 -6 src/sys/fs/cd9660/cd9660_vnops.c
1.180 +10 -2 src/sys/fs/devfs/devfs_vnops.c
1.78 +22 -6 src/sys/fs/pseudofs/pseudofs_vnops.c
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