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Commit 483eec0d authored by wang di's avatar wang di Committed by Greg Kroah-Hartman
Browse files

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: default avatarwang 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: default avatarFan Yong <fan.yong@intel.com>
Reviewed-by: default avatarAndreas Dilger <andreas.dilger@intel.com>
Signed-off-by: default avatarJames Simmons <jsimmons@infradead.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ae322e05

drivers/staging/lustre/lustre/llite/llite_lib.c

+1 −1
Original line number Diff line number Diff line
@@ -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)

drivers/staging/lustre/lustre/mdc/mdc_request.c

+1 −2
Original line number Diff line number Diff line
@@ -142,9 +142,8 @@ static int mdc_getattr_common(struct obd_export *exp, 


	CDEBUG(D_NET, "mode: %o\n", body->mode);



	if (body->eadatasize != 0) {

	mdc_update_max_ea_from_body(exp, body);



	if (body->eadatasize != 0) {

		eadata = req_capsule_server_sized_get(pill, &RMF_MDT_MD,

						      body->eadatasize);

		if (!eadata)