Dave Wysochanski d8a6ad913c NFS4: Fix oops when copy_file_range is attempted with NFS4.0 source ... The following oops is seen during xfstest/565 when the 'test' (source of the copy) is NFS4.0 and 'scratch' (destination) is NFS4.2 [ 59.692458] run fstests generic/565 at 2020-08-01 05:50:35 [ 60.613588] BUG: kernel NULL pointer dereference, address: 0000000000000008 [ 60.624970] #PF: supervisor read access in kernel mode [ 60.627671] #PF: error_code(0x0000) - not-present page [ 60.630347] PGD 0 P4D 0 [ 60.631853] Oops: 0000 [#1] SMP PTI [ 60.634086] CPU: 6 PID: 2828 Comm: xfs_io Kdump: loaded Not tainted 5.8.0-rc3 #1 [ 60.637676] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 [ 60.639901] RIP: 0010:nfs4_check_serverowner_major_id+0x5/0x30 [nfsv4] [ 60.642719] Code: 89 ff e8 3e b3 b8 e1 e9 71 fe ff ff 41 bc da d8 ff ff e9 c3 fe ff ff e8 e9 9d 08 e2 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 <8b> 57 08 31 c0 3b 56 08 75 12 48 83 c6 0c 48 83 c7 0c e8 c4 97 bb [ 60.652629] RSP: 0018:ffffc265417f7e10 EFLAGS: 00010287 [ 60.655379] RAX: ffffa0664b066400 RBX: 0000000000000000 RCX: 0000000000000001 [ 60.658754] RDX: ffffa066725fb000 RSI: ffffa066725fd000 RDI: 0000000000000000 [ 60.662292] RBP: 0000000000020000 R08: 0000000000020000 R09: 0000000000000000 [ 60.666189] R10: 0000000000000003 R11: 0000000000000000 R12: ffffa06648258d00 [ 60.669914] R13: 0000000000000000 R14: 0000000000000000 R15: ffffa06648258100 [ 60.673645] FS: 00007faa9fb35800(0000) GS:ffffa06677d80000(0000) knlGS:0000000000000000 [ 60.677698] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.680773] CR2: 0000000000000008 CR3: 0000000203f14000 CR4: 00000000000406e0 [ 60.684476] Call Trace: [ 60.685809] nfs4_copy_file_range+0xfc/0x230 [nfsv4] [ 60.688704] vfs_copy_file_range+0x2ee/0x310 [ 60.691104] __x64_sys_copy_file_range+0xd6/0x210 [ 60.693527] do_syscall_64+0x4d/0x90 [ 60.695512] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.698006] RIP: 0033:0x7faa9febc1bd Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>		2020-09-21 10:21:10 -04:00
..
blocklayout	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
filelayout	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
flexfilelayout	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
cache_lib.c	NFS client updates for Linux 4.15	2017-11-17 14:18:00 -08:00
cache_lib.h	NFS client updates for Linux 4.15	2017-11-17 14:18:00 -08:00
callback_proc.c	NFSv4: Add support for CB_RECALL_ANY for flexfiles layouts	2020-03-16 08:34:30 -04:00
callback_xdr.c	NFS4: Report callback authentication errors	2020-01-15 10:54:31 -05:00
callback.c	SUNRPC: Cache the process user cred in the RPC server listener	2019-04-24 09:46:35 -04:00
callback.h	NFSv4: Add support for CB_RECALL_ANY for flexfiles layouts	2020-03-16 08:34:30 -04:00
client.c	NFSv4.2: query the server for extended attribute support	2020-07-13 17:52:45 -04:00
delegation.c	NFS: Beware when dereferencing the delegation cred	2020-04-03 18:26:02 -04:00
delegation.h	NFSv4: Ensure the delegation is pinned in nfs_do_return_delegation()	2020-02-13 16:18:50 -05:00
dir.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
direct.c	NFS client updates for Linux 5.9	2020-08-15 08:26:55 -07:00
dns_resolve.c	NFS: remove duplicate headers	2020-05-27 10:10:12 -04:00
dns_resolve.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	NFS: Add a tracepoint in nfs_fh_to_dentry()	2019-11-03 21:28:46 -05:00
file.c	NFS client updates for Linux 5.9	2020-08-15 08:26:55 -07:00
fs_context.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
fscache-index.c	nfs: fscache: use timespec64 in inode auxdata	2020-01-15 10:54:30 -05:00
fscache.c	NFSv4: Fix fscache cookie aux_data to ensure change_attr is included	2020-05-08 22:20:24 +01:00
fscache.h	nfs: fscache: use timespec64 in inode auxdata	2020-01-15 10:54:30 -05:00
getroot.c	NFS: Ensure security label is set for root inode	2020-03-30 19:56:50 -04:00
inode.c	Merge branch 'xattr-devel'	2020-07-17 10:35:48 -04:00
internal.h	mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead	2020-06-02 10:59:08 -07:00
io.c	NFS: Fix up documentation warnings	2019-02-20 15:14:21 -05:00
iostat.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig	Documentation: nfsroot.rst: Fix references to nfsroot.rst	2020-03-02 13:11:46 -07:00
Makefile	NFSv4.2: add client side xattr caching.	2020-07-13 17:52:46 -04:00
mount_clnt.c	NFSv3: fix rpc receive buffer size for MOUNT call	2020-05-14 18:42:44 -04:00
namespace.c	NFS: Add a module parameter to set nfs_mountpoint_expiry_timeout	2020-04-02 18:53:59 -04:00
netns.h	NFS: Add sysfs support for per-container identifier	2019-07-06 14:54:49 -04:00
nfs2super.c	treewide: Add SPDX license identifier for more missed files	2019-05-21 10:50:45 +02:00
nfs2xdr.c	nfs: remove timespec from xdr_encode_nfstime	2020-01-15 10:54:30 -05:00
nfs3_fs.h	NFS: Additional refactoring for fs_context conversion	2020-01-15 10:15:17 -05:00
nfs3acl.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
nfs3client.c	NFS: Additional refactoring for fs_context conversion	2020-01-15 10:15:17 -05:00
nfs3proc.c	NFS: move dprintk after nfs_alloc_fattr in nfs3_proc_lookup	2020-05-27 10:08:26 -04:00
nfs3super.c	treewide: Add SPDX license identifier for more missed files	2019-05-21 10:50:45 +02:00
nfs3xdr.c	NFS/pnfs: Fix pnfs_generic_prepare_to_resend_writes()	2020-01-15 10:54:32 -05:00
nfs4_fs.h	NFS client updates for Linux 5.9	2020-08-15 08:26:55 -07:00
nfs4client.c	NFSv4.0 allow nconnect for v4.0	2020-07-17 13:16:23 -04:00
nfs4file.c	NFS4: Fix oops when copy_file_range is attempted with NFS4.0 source	2020-09-21 10:21:10 -04:00
nfs4getroot.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nfs4idmap.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
nfs4idmap.h
nfs4namespace.c	nfs: Fix memory leak of export_path	2020-06-26 08:43:14 -04:00
nfs4proc.c	nfs4: strengthen error check to avoid unexpected result	2020-09-21 10:21:08 -04:00
nfs4renewd.c	NFSv4.0: nfs4_do_fsinfo() should not do implicit lease renewals	2020-02-04 12:27:55 -05:00
nfs4session.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
nfs4session.h	NFSv4.1: Bump the default callback session slot count to 16	2019-03-02 16:25:26 -05:00
nfs4state.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
nfs4super.c	NFSv4.2: add client side xattr caching.	2020-07-13 17:52:46 -04:00
nfs4sysctl.c	nfs: Do not convert nfs_idmap_cache_timeout to jiffies	2018-01-18 15:10:47 -05:00
nfs4trace.c	pNFS/flexfiles: Add tracing for layout errors	2020-01-15 10:54:33 -05:00
nfs4trace.h	NFS: Add layout segment info to pnfs read/write/commit tracepoints	2020-08-12 09:46:05 -04:00
nfs4xdr.c	fs: nfs: delete repeated words in comments	2020-08-12 09:46:22 -04:00
nfs42.h	NFSv4.2: add the extended attribute proc functions.	2020-07-13 17:52:45 -04:00
nfs42proc.c	NFS: Add tracepoints for layouterror and layoutstats.	2020-08-05 07:27:44 -04:00
nfs42xattr.c	NFSv4.2: xattr cache: get rid of cache discard work queue	2020-07-30 15:51:44 -04:00
nfs42xdr.c	NFSv4.2: add client side XDR handling for extended attributes	2020-07-13 17:52:45 -04:00
nfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nfsroot.c	nfsroot: set tcp as the default transport protocol	2020-03-25 08:45:47 -04:00
nfstrace.c	NFS: Add trace events to report non-zero NFS status codes	2019-02-13 12:03:21 -05:00
nfstrace.h	nfs: define and use the NFS_INO_INVALID_XATTR flag	2020-07-13 17:52:45 -04:00
pagelist.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
pnfs_dev.c	NFS/flexfiles: Speed up read failover when DSes are down	2019-03-01 22:37:38 -05:00
pnfs_nfs.c	NFS/pnfs: Don't use RPC_TASK_CRED_NOREF with pnfs	2020-05-13 09:55:36 -04:00
pnfs.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
pnfs.h	NFS: Fix flexfiles read failover	2020-08-12 11:20:29 -04:00
proc.c	NFS: Add softreval behaviour to nfs_lookup_revalidate()	2020-01-24 16:51:13 -05:00
read.c	NFS: Trace short NFS READs	2020-06-11 13:33:48 -04:00
super.c	Merge tag 'fscache-fixes-20200508-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs	2020-05-11 14:06:50 -04:00
symlink.c	nfs: pass the correct prototype to read_cache_page	2019-05-09 16:26:57 -04:00
sysctl.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sysfs.c	fs: nfs: sysfs: Remove NULL check before kfree	2019-11-18 10:38:04 +01:00
sysfs.h	NFS: Use the correct style for SPDX License Identifier	2020-05-27 10:08:26 -04:00
unlink.c	NFS: Avoid referencing the cred twice in async rename/unlink	2020-03-16 08:34:29 -04:00
write.c	mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead	2020-06-02 10:59:08 -07:00