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KVM: PPC: Fix callback check in kvmppc_gsm_refresh_info

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The kvmppc_gsm_refresh_info() function incorrectly checks for the
presence of the fill_info callback instead of refresh_info.

This can lead to:
- NULL pointer dereference if refresh_info is NULL but fill_info is present
- EINVAL return if refresh_info is present but fill_info is NULL

Fix this by checking the correct callback.

Fixes: 6ccbbc33f0 ("KVM: PPC: Add helper library for Guest State Buffers")
Signed-off-by: Bui Nguyen Nhu Quynh <kaylovefoss@gmail.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Reviewed-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260918143124.9913-1-kaylovefoss@gmail.com
This commit is contained in:
Bui Nguyen Nhu Quynh 2026-09-18 21:31:24 +07:00 committed by Madhavan Srinivasan
parent 93f51579e7
commit a7ea67879a
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kvm/guest-state-buffer.c
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@ -598,7 +598,7 @@ EXPORT_SYMBOL_GPL(kvmppc_gsm_fill_info);
int kvmppc_gsm_refresh_info(struct kvmppc_gs_msg *gsm,
struct kvmppc_gs_buff *gsb)
{
if (!gsm->ops->fill_info)
if (!gsm->ops->refresh_info)
return -EINVAL;
return gsm->ops->refresh_info(gsm, gsb);