From: "Carlos Bilbao (Lambda)" <carlos.bilbao@kernel.org>
To: mani@kernel.org, kwilczynski@kernel.org, kishon@kernel.org,
den@valinux.co.jp
Cc: arnd@arndb.de, gregkh@linuxfoundation.org,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
bilbao@vt.edu, Carlos Bilbao <carlos.bilbao@kernel.org>
Subject: [PATCH v2 0/2] misc: pci_endpoint_test: doorbell BAR validation fixes
Date: Fri, 10 Apr 2026 16:02:58 -0700 [thread overview]
Message-ID: <20260410230300.135631-1-carlos.bilbao@kernel.org> (raw)
From: Carlos Bilbao <carlos.bilbao@kernel.org>
pci_endpoint_test_doorbell() reads a BAR number from endpoint MMIO and
uses it as an array index into test->bar[]. Add a defensive bounds check
covering both out-of-range positive values and NO_BAR (-1), and remove a
dead register read that precedes the writel sequence.
Changes since v1:
- Patch 1: extend bounds check to also reject NO_BAR (-1), which is the
Use %d (not %u) in the error message.
- Patch 2: no code change; add Reviewed-by tag.
Carlos Bilbao (2):
misc: pci_endpoint_test: validate BAR index in doorbell test
misc: pci_endpoint_test: remove dead BAR read before doorbell trigger
drivers/misc/pci_endpoint_test.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--
2.43.0
next reply other threads:[~2026-04-10 23:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-10 23:02 Carlos Bilbao (Lambda) [this message]
2026-04-10 23:02 ` [PATCH v2 1/2] misc: pci_endpoint_test: validate BAR index in doorbell test Carlos Bilbao (Lambda)
2026-04-10 23:03 ` [PATCH v2 2/2] misc: pci_endpoint_test: remove dead BAR read before doorbell trigger Carlos Bilbao (Lambda)
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