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Trond Myklebust d953126a28 NFSv4: Fix a problem whereby a buggy server can oops the kernel 
We just had a case in which a buggy server occasionally returns the wrong
attributes during an OPEN call. While the client does catch this sort of
condition in nfs4_open_done(), and causes the nfs4_atomic_open() to return
-EISDIR, the logic in nfs_atomic_lookup() is broken, since it causes a
fallback to an ordinary lookup instead of just returning the error.

When the buggy server then returns a regular file for the fallback lookup,
the VFS allows the open, and bad things start to happen, since the open
file doesn't have any associated NFSv4 state.

The fix is firstly to return the EISDIR/ENOTDIR errors immediately, and
secondly to ensure that we are always careful when dereferencing the
nfs_open_context state pointer.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
 		2009-07-21 19:22:38 -04:00
..
Kconfig Merge branch 'for-2.6.31' of git://fieldses.org/git/linux-nfsd 2009-06-22 12:55:50 -07:00
Makefile NFS: Define and create server-level objects 2009-04-03 16:42:42 +01:00
callback.c Merge branch 'devel-for-2.6.31' into for-2.6.31 2009-06-18 18:13:44 -07:00
callback.h nfs41: Backchannel: update cb_sequence args and results 2009-06-17 14:11:40 -07:00
callback_proc.c nfs41: Backchannel: CB_SEQUENCE validation 2009-06-17 14:11:43 -07:00
callback_xdr.c nfs41: Backchannel: update cb_sequence args and results 2009-06-17 14:11:40 -07:00
client.c NFSv4: Fix an NFSv4 mount regression 2009-07-21 16:48:07 -04:00
delegation.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
delegation.h NFSv4: Convert delegation->type field to fmode_t 2008-12-23 15:21:53 -05:00
dir.c NFSv4: Fix a problem whereby a buggy server can oops the kernel 2009-07-21 19:22:38 -04:00
direct.c nfs41 commit sequence setup done support 2009-06-17 10:46:50 -07:00
file.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
fscache-index.c NFS: Add read context retention for FS-Cache to call back with 2009-04-03 16:42:44 +01:00
fscache.c NFS: Store pages from an NFS inode into a local cache 2009-04-03 16:42:45 +01:00
fscache.h NFS: Display local caching state 2009-04-03 16:42:47 +01:00
getroot.c headers: mnt_namespace.h redux 2009-07-08 09:31:56 -07:00
idmap.c nfs: fix sparse warnings 2008-02-20 16:15:44 -05:00
inode.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
internal.h Merge branch 'devel-for-2.6.31' into for-2.6.31 2009-06-18 18:13:44 -07:00
iostat.h remove put_cpu_no_resched() 2009-06-16 19:47:48 -07:00
mount_clnt.c NFS: Remove unused XDR decoder functions 2009-06-17 18:02:13 -07:00
namespace.c NFS: Fix nfs_path() to always return a '/' at the beginning of the path 2009-06-22 21:28:25 -07:00
nfs2xdr.c NFS: Fix the type of struct nfs_fattr->mode 2009-03-11 14:10:26 -04:00
nfs3acl.c nfs: remove unnecessary NFS_INO_INVALID_ACL checks 2009-06-17 18:02:14 -07:00
nfs3proc.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-04-02 21:09:10 -07:00
nfs3xdr.c NFS: Fix the XDR iovec calculation in nfs3_xdr_setaclargs 2009-04-21 07:46:49 -07:00
nfs4_fs.h NFSv4: Fix an NFSv4 mount regression 2009-07-21 16:48:07 -04:00
nfs4namespace.c NFS: Fix misparsing of nfsv4 fs_locations attribute (take 2) 2009-03-10 20:33:17 -04:00
nfs4proc.c NFSv4: Fix a problem whereby a buggy server can oops the kernel 2009-07-21 19:22:38 -04:00
nfs4renewd.c nfs41: introduce get_state_renewal_cred 2009-06-17 12:25:11 -07:00
nfs4state.c NFSv4: Fix an Oops in nfs4_free_lock_state 2009-07-21 16:47:46 -04:00
nfs4xdr.c nfs41: sequence operation 2009-06-17 12:25:04 -07:00
nfsroot.c NFS: Update MNT and MNT3 reply decoding functions 2009-06-17 18:02:13 -07:00
pagelist.c NFS: Throttle page dirtying while we're flushing to disk 2009-03-11 14:10:30 -04:00
proc.c NFS: Optimise NFS close() 2009-03-19 15:35:50 -04:00
read.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
super.c NFS: Correct the NFS mount path when following a referral 2009-06-22 21:28:25 -07:00
symlink.c nfs: remove unnecessary NFS_NEED_* defines 2008-04-23 16:13:37 -04:00
sysctl.c [PATCH] nfs: fix congestion control 2007-03-16 19:25:05 -07:00
unlink.c nfs41: use rpc prepare call state for session reset 2009-06-17 12:25:07 -07:00
write.c Revert "fuse: Fix build error" as unnecessary 2009-07-11 11:22:34 -07:00