Messages in this thread Patch in this message | | | From | Sumit Garg <> | Subject | [PATCH -next] tee: fix possible error pointer ctx dereferencing | Date | Wed, 20 Feb 2019 11:32:27 +0530 |
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Add check for valid ctx pointer and then only dereference ctx to configure supp_nowait flag.
Fixes: 42bf4152d8a7 ("tee: add supp_nowait flag in tee_context struct") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Sumit Garg <sumit.garg@linaro.org> --- drivers/tee/tee_core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c index 25f3b9c..06fbfc0 100644 --- a/drivers/tee/tee_core.c +++ b/drivers/tee/tee_core.c @@ -993,7 +993,9 @@ tee_client_open_context(struct tee_context *start, * tee_client_open_session() if any in kernel client requires * different behaviour. */ - ctx->supp_nowait = true; + if (!IS_ERR(ctx)) + ctx->supp_nowait = true; + return ctx; } EXPORT_SYMBOL_GPL(tee_client_open_context); -- 2.7.4
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