Patch "KVM: PPC: Book3S HV nestedv2: Fix an error handling path in gs_msg_ops_kvmhv_nestedv2_config_fill_info()" has been added to the 6.8-stable tree

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This is a note to let you know that I've just added the patch titled

    KVM: PPC: Book3S HV nestedv2: Fix an error handling path in gs_msg_ops_kvmhv_nestedv2_config_fill_info()

to the 6.8-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     kvm-ppc-book3s-hv-nestedv2-fix-an-error-handling-pat.patch
and it can be found in the queue-6.8 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit d80884ac684aa69626fdee01f45ec8fc8b1076f8
Author: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Date:   Sun Jan 28 12:34:25 2024 +0100

    KVM: PPC: Book3S HV nestedv2: Fix an error handling path in gs_msg_ops_kvmhv_nestedv2_config_fill_info()
    
    [ Upstream commit b52e8cd3f835869370f8540f1bc804a47a47f02b ]
    
    The return value of kvmppc_gse_put_buff_info() is not assigned to 'rc' and
    'rc' is uninitialized at this point.
    So the error handling can not work.
    
    Assign the expected value to 'rc' to fix the issue.
    
    Fixes: 19d31c5f1157 ("KVM: PPC: Add support for nestedv2 guests")
    Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
    Reviewed-by: Vaibhav Jain <vaibhav@xxxxxxxxxxxxx>
    Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
    Link: https://msgid.link/a7ed4cc12e0a0bbd97fac44fe6c222d1c393ec95.1706441651.git.christophe.jaillet@xxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/powerpc/kvm/book3s_hv_nestedv2.c b/arch/powerpc/kvm/book3s_hv_nestedv2.c
index 8e6f5355f08b5..1091f7a83b255 100644
--- a/arch/powerpc/kvm/book3s_hv_nestedv2.c
+++ b/arch/powerpc/kvm/book3s_hv_nestedv2.c
@@ -71,8 +71,8 @@ gs_msg_ops_kvmhv_nestedv2_config_fill_info(struct kvmppc_gs_buff *gsb,
 	}
 
 	if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_RUN_OUTPUT)) {
-		kvmppc_gse_put_buff_info(gsb, KVMPPC_GSID_RUN_OUTPUT,
-					 cfg->vcpu_run_output_cfg);
+		rc = kvmppc_gse_put_buff_info(gsb, KVMPPC_GSID_RUN_OUTPUT,
+					      cfg->vcpu_run_output_cfg);
 		if (rc < 0)
 			return rc;
 	}




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