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ab0fc21bc7
linux/fs/nfs
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ChenXiaoSong ab0fc21bc7 Revert "NFSv4: Handle the special Linux file open access mode" 
This reverts commit 44942b4e45.

After secondly opening a file with O_ACCMODE|O_DIRECT flags,
nfs4_valid_open_stateid() will dereference NULL nfs4_state when lseek().

Reproducer:
  1. mount -t nfs -o vers=4.2 $server_ip:/ /mnt/
  2. fd = open("/mnt/file", O_ACCMODE|O_DIRECT|O_CREAT)
  3. close(fd)
  4. fd = open("/mnt/file", O_ACCMODE|O_DIRECT)
  5. lseek(fd)

Reported-by: Lyu Tao <tao.lyu@epfl.ch>
Signed-off-by: ChenXiaoSong <chenxiaosong2@huawei.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2022-03-29 22:14:00 -04:00
..
blocklayout nfs/blocklayout: use bdev_nr_bytes instead of open coding it 2021-10-18 14:43:23 -06:00
filelayout pNFS/files: Ensure pNFS allocation modes are consistent with nfsiod 2022-03-22 15:52:56 -04:00
flexfilelayout pNFS/flexfiles: Ensure pNFS allocation modes are consistent with nfsiod 2022-03-22 15:52:56 -04:00
cache_lib.c
cache_lib.h
callback_proc.c NFSv4/pNFS: Fix another issue with a list iterator pointing to the head 2022-03-28 08:36:34 -04:00
callback_xdr.c NFS: remove unneeded check in decode_devicenotify_args() 2022-03-13 12:59:34 -04:00
callback.c Merge branch 'signal-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2022-01-17 05:49:30 +02:00
callback.h NFSv4.1: Fix uninitialised variable in devicenotify 2022-01-06 14:00:20 -05:00
client.c NFSv4.1 provide mount option to toggle trunking discovery 2022-03-21 10:36:49 -04:00
delegation.c NFSv4: Charge NFSv4 open state trackers to kmemcg 2022-02-25 18:50:12 -05:00
delegation.h NFSv4: Fix delegation return in cases where we have to retry 2021-06-13 19:36:27 -04:00
dir.c NFS: Fix revalidation of empty readdir pages 2022-03-22 15:52:55 -04:00
direct.c NFS: swap-out must always use STABLE writes. 2022-03-13 12:59:35 -04:00
dns_resolve.c NFS: remove duplicate headers 2020-05-27 10:10:12 -04:00
dns_resolve.h
export.c nfs: block notification on fs with its own ->lock 2022-01-08 14:42:01 -05:00
file.c NFS: swap IO handling is slightly different for O_DIRECT IO 2022-03-13 12:59:35 -04:00
fs_context.c NFSv4.1 provide mount option to toggle trunking discovery 2022-03-21 10:36:49 -04:00
fscache.c NFS: Remove remaining dfprintks related to fscache and remove NFSDBG_FSCACHE 2022-03-13 12:59:35 -04:00
fscache.h NFS: Rename fscache read and write pages functions 2022-03-13 12:59:35 -04:00
getroot.c NFS: Remove the nfs4_label argument from nfs_setsecurity 2021-11-05 14:54:40 -04:00
inode.c Revert "NFSv4: Handle the special Linux file open access mode" 2022-03-29 22:14:00 -04:00
internal.h NFS: nfsiod should not block forever in mempool_alloc() 2022-03-22 15:52:56 -04:00
io.c NFS: Fix up incorrect documentation 2021-04-05 09:04:20 -04:00
iostat.h
Kconfig NFS: Convert readdir page cache to use a cookie based index 2022-03-02 08:43:39 -05:00
Makefile nfs: Convert to new fscache volume/cookie API 2022-01-10 11:53:25 +00:00
mount_clnt.c nfs: hornor timeo and retrans option when mounting NFSv3 2021-04-05 09:04:21 -04:00
namespace.c NFS: Remove the label from the nfs4_lookup_res struct 2021-11-05 14:54:39 -04:00
netns.h
nfs2super.c
nfs2xdr.c NFS: Optimise away the previous cookie field 2022-03-02 08:43:39 -05:00
nfs3_fs.h vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
nfs3acl.c vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
nfs3client.c NFS: Additional refactoring for fs_context conversion 2020-01-15 10:15:17 -05:00
nfs3proc.c NFS: pass cred explicitly for access tests 2022-01-06 14:00:20 -05:00
nfs3super.c
nfs3xdr.c NFS: Optimise away the previous cookie field 2022-03-02 08:43:39 -05:00
nfs4_fs.h NFSv4: keep state manager thread active if swap is enabled 2022-03-13 12:59:35 -04:00
nfs4client.c nfs: nfs4clinet: check the return value of kstrdup() 2022-01-06 14:00:20 -05:00
nfs4file.c Revert "NFSv4: Handle the special Linux file open access mode" 2022-03-29 22:14:00 -04:00
nfs4getroot.c
nfs4idmap.c Fix user namespace leak 2021-10-20 18:09:54 -04:00
nfs4idmap.h
nfs4namespace.c NFSv4 handle port presence in fs_location server string 2022-01-13 09:36:58 -05:00
nfs4proc.c NFSv4.1: don't retry BIND_CONN_TO_SESSION on session error 2022-03-24 12:06:07 -04:00
nfs4renewd.c treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
nfs4session.c NFSv4: Sanity check the parameters in nfs41_update_target_slotid() 2021-11-07 09:23:14 -05:00
nfs4session.h NFSv4: Sanity check the parameters in nfs41_update_target_slotid() 2021-11-07 09:23:14 -05:00
nfs4state.c NFSv4: keep state manager thread active if swap is enabled 2022-03-13 12:59:35 -04:00
nfs4super.c NFS: Adjust fs_context error logging 2021-01-10 13:32:39 -05:00
nfs4sysctl.c
nfs4trace.c pNFS/flexfiles: Add tracing for layout errors 2020-01-15 10:54:33 -05:00
nfs4trace.h NFSv4.2 add tracepoint to OFFLOAD_CANCEL 2021-11-04 19:43:30 -04:00
nfs4xdr.c NFS: Optimise away the previous cookie field 2022-03-02 08:43:39 -05:00
nfs42.h NFSv4.2: add the extended attribute proc functions. 2020-07-13 17:52:45 -04:00
nfs42proc.c NFS: replace usage of found with dedicated list iterator variable 2022-03-24 12:06:07 -04:00
nfs42xattr.c NFSv4.2: Fix up an invalid combination of memory allocation flags 2022-02-25 18:50:12 -05:00
nfs42xdr.c NFSv42: Don't fail clone() unless the OP_CLONE operation failed 2021-11-17 14:08:23 -05:00
nfs.h
nfsroot.c nfsroot: Default mount option should ask for built-in NFS version 2020-11-02 10:29:03 -05:00
nfstrace.c NFSv4: Catch and trace server filehandle encoding errors 2021-04-14 09:36:29 -04:00
nfstrace.h NFS: Replace dfprintks with tracepoints in fscache read and write page functions 2022-03-13 12:59:35 -04:00
pagelist.c NFS: Don't loop forever in nfs_do_recoalesce() 2022-03-25 21:51:03 -04:00
pnfs_dev.c NFSv4/pnfs: Add tracing for the deviceid cache 2020-12-16 17:25:24 -05:00
pnfs_nfs.c NFS: nfsiod should not block forever in mempool_alloc() 2022-03-22 15:52:56 -04:00
pnfs.c NFSv4/pNFS: Fix another issue with a list iterator pointing to the head 2022-03-28 08:36:34 -04:00
pnfs.h NFSv4/pNFS: Fix another issue with a list iterator pointing to the head 2022-03-28 08:36:34 -04:00
proc.c NFS: NFSv2/v3 clients should never be setting NFS_CAP_XATTR 2022-02-25 18:50:13 -05:00
read.c NFS: discard NFS_RPC_SWAPFLAGS and RPC_TASK_ROOTCREDS 2022-03-13 12:59:35 -04:00
super.c nfs: Convert to new fscache volume/cookie API 2022-01-10 11:53:25 +00:00
symlink.c
sysctl.c
sysfs.c Revert "NFSv4: use unique client identifiers in network namespaces" 2022-02-28 10:09:23 -05:00
sysfs.h NFSv4: Fix up RCU annotations for struct nfs_netns_client 2020-10-15 13:31:08 -04:00
unlink.c NFS: Fix open coded versions of nfs_set_cache_invalid() 2021-03-08 16:13:55 -05:00
write.c NFS: Avoid writeback threads getting stuck in mempool_alloc() 2022-03-22 15:52:56 -04:00