From 6c8f8456cb0b239812dee5211881426496da7b98 Mon Sep 17 00:00:00 2001 From: Klaus Jensen Date: Tue, 8 Aug 2023 17:16:13 +0200 Subject: [PATCH] hw/nvme: fix null pointer access in directive receive nvme_directive_receive() does not check if an endurance group has been configured (set) prior to testing if flexible data placement is enabled or not. Fix this. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1815 Fixes: 73064edfb864 ("hw/nvme: flexible data placement emulation") Reviewed-by: Jesper Wendel Devantier Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index d217ae91b5..e5b5c7034d 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -6900,7 +6900,7 @@ static uint16_t nvme_directive_receive(NvmeCtrl *n, NvmeRequest *req) case NVME_DIRECTIVE_IDENTIFY: switch (doper) { case NVME_DIRECTIVE_RETURN_PARAMS: - if (ns->endgrp->fdp.enabled) { + if (ns->endgrp && ns->endgrp->fdp.enabled) { id.supported |= 1 << NVME_DIRECTIVE_DATA_PLACEMENT; id.enabled |= 1 << NVME_DIRECTIVE_DATA_PLACEMENT; id.persistent |= 1 << NVME_DIRECTIVE_DATA_PLACEMENT;