From: Stefan Wahren <wahrenst@gmx.net>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Florian Fainelli <florian.fainelli@broadcom.com>
Cc: Umang Jain <umang.jain@ideasonboard.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-staging@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
Stefan Wahren <wahrenst@gmx.net>
Subject: [PATCH V2] staging: vc04_services: vchiq_arm: Fix NULL ptr dereferences
Date: Sat, 20 Apr 2024 11:12:40 +0200 [thread overview]
Message-ID: <20240420091240.9552-1-wahrenst@gmx.net> (raw)
The commit 8c9753f63905 ("staging: vc04_services: vchiq_arm: Drop
g_cache_line_size") introduced NULL pointer dereferences by
using the wrong device.
Fixes: 8c9753f63905 ("staging: vc04_services: vchiq_arm: Drop g_cache_line_size")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
---
Changes in V2:
- drop cosmetic changes as noticed by Laurent
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 502ddc0f6e46..c06232fcb0fb 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -257,7 +257,7 @@ create_pagelist(struct vchiq_instance *instance, char *buf, char __user *ubuf,
if (count >= INT_MAX - PAGE_SIZE)
return NULL;
- drv_mgmt = dev_get_drvdata(instance->state->dev->parent);
+ drv_mgmt = dev_get_drvdata(instance->state->dev);
if (buf)
offset = (uintptr_t)buf & (PAGE_SIZE - 1);
@@ -436,7 +436,7 @@ free_pagelist(struct vchiq_instance *instance, struct vchiq_pagelist_info *pagel
dev_dbg(instance->state->dev, "arm: %pK, %d\n", pagelistinfo->pagelist, actual);
- drv_mgmt = dev_get_drvdata(instance->state->dev->parent);
+ drv_mgmt = dev_get_drvdata(instance->state->dev);
/*
* NOTE: dma_unmap_sg must be called before the
--
2.34.1
next reply other threads:[~2024-04-20 9:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-20 9:12 Stefan Wahren [this message]
2024-04-20 10:54 ` [PATCH V2] staging: vc04_services: vchiq_arm: Fix NULL ptr dereferences Laurent Pinchart
2024-04-21 8:49 ` Umang Jain
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