[lustre-devel] [PATCH 15/45] lustre: mgc: protect from NULL exp in mgc_enqueue()
James Simmons
jsimmons at infradead.org
Mon May 25 15:07:52 PDT 2020
From: Sebastien Buisson <sbuisson at ddn.com>
Return an error in mgc_enqueue() is exp parameter is NULL.
Otherwise, it might crash in class_exp2cliimp().
WC-bug-id: https://jira.whamcloud.com/browse/LU-13466
Lustre-commit: 83906f97c1d3b ("LU-13466 mgc: protect from NULL exp in mgc_enqueue()")
Signed-off-by: Sebastien Buisson <sbuisson at ddn.com>
Reviewed-on: https://review.whamcloud.com/38280
Reviewed-by: Andreas Dilger <adilger at whamcloud.com>
Reviewed-by: James Simmons <jsimmons at infradead.org>
Signed-off-by: James Simmons <jsimmons at infradead.org>
---
fs/lustre/mgc/mgc_request.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/fs/lustre/mgc/mgc_request.c b/fs/lustre/mgc/mgc_request.c
index 81f3873..cc3c82e 100644
--- a/fs/lustre/mgc/mgc_request.c
+++ b/fs/lustre/mgc/mgc_request.c
@@ -875,6 +875,9 @@ static int mgc_enqueue(struct obd_export *exp, u32 type,
int short_limit = cld_is_sptlrpc(cld);
int rc;
+ if (!exp)
+ return -EBADR;
+
CDEBUG(D_MGC, "Enqueue for %s (res %#llx)\n", cld->cld_logname,
cld->cld_resid.name[0]);
--
1.8.3.1
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