From: George Kennedy <george.kennedy@oracle.com>
To: george.kennedy@oracle.com, pjones@redhat.com, konrad@kernel.org,
linux-kernel@vger.kernel.org, konrad.wilk@oracle.com
Subject: [PATCH 1/1] iscsi_ibft: KASAN false positive failure occurs in ibft_init()
Date: Tue, 26 Jan 2021 13:03:21 -0500 [thread overview]
Message-ID: <1611684201-16262-1-git-send-email-george.kennedy@oracle.com> (raw)
During boot of kernel with CONFIG_KASAN the following KASAN false
positive failure will occur when ibft_init() reads the
ACPI iBFT table: BUG: KASAN: use-after-free in ibft_init
The ACPI iBFT table is not allocated, and the iscsi driver uses
a pointer to it to calculate checksum, etc. KASAN complains
about this pointer with use-after-free, which this is not.
Signed-off-by: George Kennedy <george.kennedy@oracle.com>
---
drivers/firmware/Makefile | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 5e013b6..30ddab5 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -14,6 +14,9 @@ obj-$(CONFIG_INTEL_STRATIX10_SERVICE) += stratix10-svc.o
obj-$(CONFIG_INTEL_STRATIX10_RSU) += stratix10-rsu.o
obj-$(CONFIG_ISCSI_IBFT_FIND) += iscsi_ibft_find.o
obj-$(CONFIG_ISCSI_IBFT) += iscsi_ibft.o
+KASAN_SANITIZE_iscsi_ibft.o := n
+KCOV_INSTRUMENT_iscsi_ibft.o := n
+
obj-$(CONFIG_FIRMWARE_MEMMAP) += memmap.o
obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o
obj-$(CONFIG_FW_CFG_SYSFS) += qemu_fw_cfg.o
--
1.8.3.1
next reply other threads:[~2021-01-26 18:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-26 18:03 George Kennedy [this message]
2021-01-27 18:44 ` [PATCH 1/1] iscsi_ibft: KASAN false positive failure occurs in ibft_init() Konrad Rzeszutek Wilk
2021-01-27 18:48 ` Dmitry Vyukov
[not found] ` <cc712c9c-7786-bb26-7082-04e564df98aa@oracle.com>
2021-01-27 21:10 ` Dmitry Vyukov
2021-02-03 19:28 ` Konrad Rzeszutek Wilk
2021-02-03 19:35 ` Dmitry Vyukov
2021-02-10 21:51 ` George Kennedy
2021-02-12 13:30 ` George Kennedy
2021-02-12 13:51 ` Dmitry Vyukov
2021-02-12 15:36 ` David Hildenbrand
2021-02-12 18:05 ` George Kennedy
-- strict thread matches above, loose matches on Subject: below --
2021-01-27 20:47 George Kennedy
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