Re: [PATCH v3 3/4] crypto: ccp: Fix possible deadlock in SEV init failure path

[Herbert Xu <herbert@gondor.apana.org.au>]

On Tue, Jun 02, 2026 at 03:36:34PM -0700, Atish Patra wrote:
> From: Atish Patra <atishp@meta.com>
> 
> __sev_platform_init_handle_init_ex_path() calls
> rmp_mark_pages_firmware() with locked=false while the parent
> function of init_ex_path already acquired the sev_cmd_mutex.
> In the case of an RMPUPDATE failure for any page after the first, the cleanup
> path would invoke reclaim pages which would result in a deadlock in
> sev_do_cmd.
> 
> Pass locked=true to honor the lock status of the parent function.
> 
> Fixes: 7364a6fbca45 ("crypto: ccp: Handle non-volatile INIT_EX data when SNP is enabled")
> 
> Reported-by: Chris Mason <clm@meta.com>
> Assisted-by: Claude:claude-opus-4-6
> Fixes: 7364a6fbca45 ("crypto: ccp: Handle non-volatile INIT_EX data when SNP is enabled")
> Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
> Signed-off-by: Atish Patra <atishp@meta.com>
> ---
>  drivers/crypto/ccp/sev-dev.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
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