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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