Messages in this thread | | | Date | Fri, 6 Jan 2023 23:18:57 +0800 | From | Herbert Xu <> | Subject | Re: [patch] crypto: ccp - Avoid page allocation failure warning for SEV_GET_ID2 |
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On Fri, Dec 30, 2022 at 02:18:46PM -0800, David Rientjes wrote: > For SEV_GET_ID2, the user provided length does not have a specified > limitation because the length of the ID may change in the future. The > kernel memory allocation, however, is implicitly limited to 4MB on x86 by > the page allocator, otherwise the kzalloc() will fail. > > When this happens, it is best not to spam the kernel log with the warning. > Simply fail the allocation and return ENOMEM to the user. > > Fixes: d6112ea0cb34 ("crypto: ccp - introduce SEV_GET_ID2 command") > Reported-by: Andy Nguyen <theflow@google.com> > Reported-by: Peter Gonda <pgonda@google.com> > Suggested-by: Herbert Xu <herbert@gondor.apana.org.au> > Signed-off-by: David Rientjes <rientjes@google.com> > --- > drivers/crypto/ccp/sev-dev.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-)
Patch applied. Thanks. -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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