Re: [PATCH net v2] net: ngbe: fix NULL pointer dereference in non-MSI-X interrupt enabling
From: Breno Leitao <leitao@debian.org>
Date: 2026-08-03 12:35:35
On Mon, Aug 03, 2026 at 03:20:21PM +0800, Jiawen Wu wrote:
In non-MSI-X mode (such as legacy INTx or single MSI), wx->msix_entry is
not allocated or initialized. Calling NGBE_INTR_MISC(wx) dereferences
wx->msix_entry->entry, leading to a NULL pointer dereference crash.
This issue was introduced by fixing the IRQ vector when the number of
VFs is 7. Fix the issue by explicitly checking `pdev->msix_enabled` to
determine the correct vector index.
Fixes: 4174c0c331a2 ("net: ngbe: specify IRQ vector when the number of VFs is 7")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>Reviewed-by: Breno Leitao <leitao@debian.org>