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staging: lustre: mdt: extra checking for getattr RPC. 

Check whether getattr RPC can hold layout MD(RMF_MDT_MD),
in case the client sends some invalid RPC, which can
cause panic on MDT.

Client will retrieve cl_max_md_size/cl_default_md_size
from MDS during mount process, so it will initialize
cl_max_md_size/cl_default_md_size before sending getattr
to MDS.

Signed-off-by: wang di <di.wang@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4222
Reviewed-on: http://review.whamcloud.com/8599
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
wang di 2016-05-04 10:28:55 -04:00 committed by Greg Kroah-Hartman
parent ae322e05eb
commit 483eec0deb
2 changed files with 2 additions and 3 deletions
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2
drivers/staging/lustre/lustre/llite/llite_lib.c
View File

@ -445,7 +445,7 @@ static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
/* make root inode
* XXX: move this to after cbd setup?
*/
valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS;
valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMODEASIZE;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
valid |= OBD_MD_FLRMTPERM;
else if (sbi->ll_flags & LL_SBI_ACL)

3
drivers/staging/lustre/lustre/mdc/mdc_request.c
View File

@ -142,9 +142,8 @@ static int mdc_getattr_common(struct obd_export *exp,
CDEBUG(D_NET, "mode: %o\n", body->mode);
mdc_update_max_ea_from_body(exp, body);
if (body->eadatasize != 0) {
mdc_update_max_ea_from_body(exp, body);
eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,
body->eadatasize);
if (!eadata)