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34b09af4f5
linux-next/fs/nfsd
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J. Bruce Fields 34b09af4f5 nfsd: fix oops on mixed NFSv4/NFSv3 client access 
If an NFSv2/v3 client breaks an NFSv4 client's delegation, it will hit a
NULL dereference in nfsd_breaker_owns_lease().

Easily reproduceable with for example

	mount -overs=4.2 server:/export /mnt/
	sleep 1h </mnt/file &
	mount -overs=3 server:/export /mnt2/
	touch /mnt2/file

Reported-by: Robert Dinse <nanook@eskimo.com>
Fixes: 28df3d1539 ("nfsd: clients don't need to break their own delegations")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=208807
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2020-08-16 16:51:18 -04:00
..
acl.h nfsd: eliminate an unnecessary acl size limit 2019-08-28 21:13:45 -04:00
auth.c nfsd: auth: Fix gid sorting when rootsquash enabled 2018-01-22 20:13:07 -08:00
auth.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blocklayout.c nfsd: convert fi_deleg_file and ls_file fields to nfsd_file 2019-08-19 11:09:09 -04:00
blocklayoutxdr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blocklayoutxdr.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cache.h nfsd4: make drc_slab global, not per-net 2020-06-01 17:44:45 -04:00
current_stateid.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
export.c nfsd: export upcalls must not return ESTALE when mountd is down 2020-03-16 12:04:33 -04:00
export.h knfsd: Allow lockless lookups of the exports 2018-10-29 16:58:04 -04:00
fault_inject.c nfsd: no need to check return value of debugfs_create functions 2019-07-03 16:57:17 +02:00
filecache.c fsnotify: create method handle_inode_event() in fsnotify_operations 2020-07-27 23:25:50 +02:00
filecache.h nfsd: convert file cache to use over/underflow safe refcount 2020-02-06 11:22:55 -05:00
flexfilelayout.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
flexfilelayoutxdr.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
flexfilelayoutxdr.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idmap.h nfsd: Remove duplicate define of IDMAP_NAMESZ/IDMAP_TYPE_xx 2015-07-20 14:58:46 -04:00
Kconfig NFSD: Fix NFS server build errors 2020-03-16 12:04:34 -04:00
lockd.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile nfsd: add a new struct file caching facility to nfsd 2019-08-19 11:00:39 -04:00
netns.h nfsd: netns.h: delete a duplicated word 2020-07-24 17:25:13 -04:00
nfs2acl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3acl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3proc.c nfsd: Ensure sampling of the write verifier is atomic with the write 2020-01-22 16:25:41 -05:00
nfs3xdr.c nfsd: Ensure sampling of the write verifier is atomic with the write 2020-01-22 16:25:41 -05:00
nfs4acl.c nfsd: check permissions when setting ACLs 2016-06-24 12:11:52 -04:00
nfs4callback.c nfsd: Fix svc_xprt refcnt leak when setup callback client failed 2020-05-28 18:15:00 -04:00
nfs4idmap.c nfsd: Use seq_putc() in two functions 2020-07-13 17:28:46 -04:00
nfs4layouts.c nfsd: fix delay timer on 32-bit architectures 2019-12-19 17:46:08 -05:00
nfs4proc.c nfsd: implement the xattr functions and en/decode logic 2020-07-13 17:27:03 -04:00
nfs4recover.c nfsd: avoid a NULL dereference in __cld_pipe_upcall() 2020-07-13 17:28:46 -04:00
nfs4state.c nfsd: fix oops on mixed NFSv4/NFSv3 client access 2020-08-16 16:51:18 -04:00
nfs4xdr.c nfsd: add fattr support for user extended attributes 2020-07-13 17:27:03 -04:00
nfscache.c nfsd: safer handling of corrupted c_type 2020-06-03 11:12:32 -04:00
nfsctl.c Remove uninitialized_var() macro for v5.9-rc1 2020-08-04 13:49:43 -07:00
nfsd.h nfsd: add defines for NFSv4.2 extended attribute support 2020-07-13 17:27:03 -04:00
nfsfh.c nfsd: Add tracing to nfsd_set_fh_dentry() 2020-03-16 12:04:33 -04:00
nfsfh.h nfsd: handle nfs3 timestamps as unsigned 2019-12-19 17:46:08 -05:00
nfsproc.c nfsd: Ensure sampling of the write verifier is atomic with the write 2020-01-22 16:25:41 -05:00
nfssvc.c nfsd: Fix old-style function definition 2020-05-11 09:16:14 -04:00
nfsxdr.c nfsd: knfsd must use the container user namespace 2019-04-24 09:46:35 -04:00
pnfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
state.h NFSD: Add tracepoints to the NFSD state management code 2020-05-20 17:30:44 -04:00
stats.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
stats.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.c nfsd: move include of state.h from trace.c to trace.h 2015-10-23 15:57:29 -04:00
trace.h NFSD: Add tracepoints for monitoring NFSD callbacks 2020-05-20 17:30:44 -04:00
vfs.c nfsd: take xattr bits into account for permission checks 2020-07-13 17:27:03 -04:00
vfs.h nfsd: define xattr functions to call into their vfs counterparts 2020-07-13 17:27:03 -04:00
xdr3.h nfsd: Ensure sampling of the write verifier is atomic with the write 2020-01-22 16:25:41 -05:00
xdr4.h nfsd: add structure definitions for xattr requests / responses 2020-07-13 17:27:03 -04:00
xdr4cb.h NFSD CB_OFFLOAD xdr 2018-09-25 20:34:54 -04:00
xdr.h NFSD: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -04:00