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dc270d7159
linux-next/fs/nfs
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Roberto Sassu dc270d7159 nfs: Fix KMSAN warning in decode_getfattr_attrs() 
Fix the following KMSAN warning:

CPU: 1 UID: 0 PID: 7651 Comm: cp Tainted: G    B
Tainted: [B]=BAD_PAGE
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009)
=====================================================
=====================================================
BUG: KMSAN: uninit-value in decode_getfattr_attrs+0x2d6d/0x2f90
 decode_getfattr_attrs+0x2d6d/0x2f90
 decode_getfattr_generic+0x806/0xb00
 nfs4_xdr_dec_getattr+0x1de/0x240
 rpcauth_unwrap_resp_decode+0xab/0x100
 rpcauth_unwrap_resp+0x95/0xc0
 call_decode+0x4ff/0xb50
 __rpc_execute+0x57b/0x19d0
 rpc_execute+0x368/0x5e0
 rpc_run_task+0xcfe/0xee0
 nfs4_proc_getattr+0x5b5/0x990
 __nfs_revalidate_inode+0x477/0xd00
 nfs_access_get_cached+0x1021/0x1cc0
 nfs_do_access+0x9f/0xae0
 nfs_permission+0x1e4/0x8c0
 inode_permission+0x356/0x6c0
 link_path_walk+0x958/0x1330
 path_lookupat+0xce/0x6b0
 filename_lookup+0x23e/0x770
 vfs_statx+0xe7/0x970
 vfs_fstatat+0x1f2/0x2c0
 __se_sys_newfstatat+0x67/0x880
 __x64_sys_newfstatat+0xbd/0x120
 x64_sys_call+0x1826/0x3cf0
 do_syscall_64+0xd0/0x1b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The KMSAN warning is triggered in decode_getfattr_attrs(), when calling
decode_attr_mdsthreshold(). It appears that fattr->mdsthreshold is not
initialized.

Fix the issue by initializing fattr->mdsthreshold to NULL in
nfs_fattr_init().

Cc: stable@vger.kernel.org # v3.5.x
Fixes: 88034c3d88 ("NFSv4.1 mdsthreshold attribute xdr")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
2024-11-04 10:24:18 -05:00
..
blocklayout nfs/blocklayout: add support for NVMe 2024-07-12 11:35:50 -04:00
filelayout nfs: pass struct nfsd_file to nfs_init_pgio and nfs_init_commit 2024-09-23 15:03:30 -04:00
flexfilelayout pnfs/flexfiles: enable localio support 2024-09-23 15:03:30 -04:00
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 pNFS: Add a flag argument to pnfs_destroy_layouts_byclid() 2024-07-08 13:47:26 -04:00
callback_xdr.c SUNRPC: Fix integer overflow in decode_rc_list() 2024-10-03 16:19:13 -04:00
callback.c sunrpc: allow svc threads to fail initialisation cleanly 2024-09-20 19:31:03 -04:00
callback.h NFSv4: Add CB_GETATTR support for delegated attributes 2024-07-08 13:47:25 -04:00
client.c NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies() 2024-10-03 16:19:13 -04:00
delegation.c NFS: remove revoked delegation from server's delegation list 2024-10-09 15:39:22 -04:00
delegation.h NFSv4: Delegreturn must set m/atime when they are delegated 2024-07-08 13:47:25 -04:00
dir.c nfs: Annotate struct nfs_cache_array with __counted_by() 2024-09-23 15:03:12 -04:00
direct.c nfs: drop the incorrect assertion in nfs_swap_rw() 2024-06-24 20:52:11 -07:00
dns_resolve.c NFS: Move common includes outside ifdef 2023-08-24 13:24:15 -04:00
dns_resolve.h NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
export.c nfsd: allow reaping files still under writeback 2023-04-26 09:04:59 -04:00
file.c fs: Convert aops->write_begin to take a folio 2024-08-07 11:33:21 +02:00
fs_context.c nfs: add 'noalignwrite' option for lock-less 'lost writes' prevention 2024-09-23 15:03:13 -04:00
fscache.c netfs: Speed up buffered reading 2024-09-12 12:20:41 +02:00
fscache.h netfs: Speed up buffered reading 2024-09-12 12:20:41 +02:00
getroot.c nfs: fix the comment of nfs_get_root 2024-09-23 15:03:13 -04:00
inode.c nfs: Fix KMSAN warning in decode_getfattr_attrs() 2024-11-04 10:24:18 -05:00
internal.h nfs/localio: use dedicated workqueues for filesystem read and write 2024-09-23 15:03:30 -04:00
io.c NFS: Fix up incorrect documentation 2021-04-05 09:04:20 -04:00
iostat.h mm: add comments for allocation helpers explaining why they are macros 2024-07-12 15:52:20 -07:00
Kconfig nfs_common: factor out nfs_errtbl and nfs_stat_to_errno 2024-09-23 15:03:29 -04:00
localio.c nfs_common: fix race in NFS calls to nfsd_file_put_local() and nfsd_serv_put() 2024-10-03 16:19:43 -04:00
Makefile nfs: add LOCALIO support 2024-09-23 15:03:30 -04:00
mount_clnt.c NFS: remove unused struct 'mnt_fhstatus' 2024-07-08 13:47:24 -04:00
namespace.c fs: pass the request_mask to generic_fillattr 2023-08-09 08:56:36 +02:00
netns.h nfs: make the rpc_stat per net namespace 2024-03-09 09:14:51 -05:00
nfs2super.c fs: nfs: add missing MODULE_DESCRIPTION() macros 2024-07-08 13:47:24 -04:00
nfs2xdr.c nfs_common: factor out nfs_errtbl and nfs_stat_to_errno 2024-09-23 15:03:29 -04:00
nfs3_fs.h fs: drop unused posix acl handlers 2023-03-06 09:57:12 +01:00
nfs3acl.c Mainly singleton patches all over the place. Series of note are: 2023-04-27 19:57:00 -07:00
nfs3client.c NFS: enable nconnect for RDMA 2024-03-09 09:14:51 -05:00
nfs3proc.c Return the delegation when deleting sillyrenamed files 2024-07-08 13:47:26 -04:00
nfs3super.c fs: nfs: add missing MODULE_DESCRIPTION() macros 2024-07-08 13:47:24 -04:00
nfs3xdr.c nfs_common: factor out nfs_errtbl and nfs_stat_to_errno 2024-09-23 15:03:29 -04:00
nfs4_fs.h nfs: simplify and guarantee owner uniqueness. 2024-09-23 15:03:12 -04:00
nfs4client.c NFSv4.1 another fix for EXCHGID4_FLAG_USE_PNFS_DS for DS server 2024-07-08 13:47:27 -04:00
nfs4file.c filelock: split leases out of struct file_lock 2024-02-05 13:11:44 +01:00
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 cred: Do not default to init_cred in prepare_kernel_cred() 2022-11-01 10:04:52 -07:00
nfs4idmap.h NFS: Move nfs_idmap.h into fs/nfs/ 2015-04-23 15:16:14 -04:00
nfs4namespace.c NFS: Avoid memcpy() run-time warning for struct sockaddr overflows 2022-10-27 15:52:10 -04:00
nfs4proc.c NFSv4.2: Fix detection of "Proxying of Times" server support 2024-09-23 15:03:13 -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: Prevent NULL-pointer dereference in nfs42_complete_copies() 2024-10-03 16:19:13 -04:00
nfs4super.c fs: nfs: add missing MODULE_DESCRIPTION() macros 2024-07-08 13:47:24 -04:00
nfs4sysctl.c fs: Remove the now superfluous sentinel elements from ctl_table array 2023-12-28 04:57:57 -08:00
nfs4trace.c nfs/blocklayout: SCSI layout trace points for reservation key reg/unreg 2024-07-08 13:47:27 -04:00
nfs4trace.h nfs/blocklayout: SCSI layout trace points for reservation key reg/unreg 2024-07-08 13:47:27 -04:00
nfs4xdr.c NFS Client Updates for Linux 6.12 2024-09-24 15:44:18 -07:00
nfs42.h NFSv4.2: fix listxattr maximum XDR buffer size 2024-02-28 16:18:18 -05:00
nfs42proc.c NFSv4: Prevent NULL-pointer dereference in nfs42_complete_copies() 2024-10-03 16:19:13 -04:00
nfs42xattr.c mm, slab: remove last vestiges of SLAB_MEM_SPREAD 2024-03-12 20:32:19 -07:00
nfs42xdr.c NFSv4.2: Rework scratch handling for READ_PLUS (again) 2023-08-23 15:58:47 -04:00
nfs.h nfs: move nfs4_xattr_handlers to .rodata 2023-10-09 16:24:20 +02:00
nfsroot.c NFS: Fix an off by one in root_nfs_cat() 2024-03-09 09:14:51 -05:00
nfstrace.c NFSv4: Catch and trace server filehandle encoding errors 2021-04-14 09:36:29 -04:00
nfstrace.h nfs: add LOCALIO support 2024-09-23 15:03:30 -04:00
pagelist.c nfs: enable localio for non-pNFS IO 2024-09-23 15:03:30 -04:00
pnfs_dev.c nfs: remove the unused max_deviceinfo_size field from struct pnfs_layoutdriver_type 2024-07-10 13:23:17 -04:00
pnfs_nfs.c nfs: pass struct nfsd_file to nfs_init_pgio and nfs_init_commit 2024-09-23 15:03:30 -04:00
pnfs.c NFSv4: Fix clearing of layout segments in layoutreturn 2024-08-22 17:01:10 -04:00
pnfs.h nfs: remove the unused max_deviceinfo_size field from struct pnfs_layoutdriver_type 2024-07-10 13:23:17 -04:00
proc.c Return the delegation when deleting sillyrenamed files 2024-07-08 13:47:26 -04:00
read.c nfs: Remove unnecessary NULL check before kfree() 2024-09-23 15:03:12 -04:00
super.c NFSv3: only use NFS timeout for MOUNT when protocols are compatible 2024-11-04 10:24:18 -05:00
symlink.c nfs: Remove calls to folio_set_error 2024-05-31 12:31:41 +02:00
sysctl.c fs: Remove the now superfluous sentinel elements from ctl_table array 2023-12-28 04:57:57 -08:00
sysfs.c NFS: Fix sysfs server name memory leak 2023-08-19 10:26:29 -04:00
sysfs.h NFS: Add sysfs links to sunrpc clients for nfs_clients 2023-06-19 15:04:13 -04:00
unlink.c Return the delegation when deleting sillyrenamed files 2024-07-08 13:47:26 -04:00
write.c nfs: enable localio for non-pNFS IO 2024-09-23 15:03:30 -04:00