From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>,
Hulk Robot <hulkci@huawei.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Hans Verkuil <hverkuil-cisco@xs4all.nl>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Sasha Levin <sashal@kernel.org>,
linux-media@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 038/350] media: vim2m: Fix BUG_ON in vim2m_device_release()
Date: Tue, 10 Dec 2019 15:58:50 -0500 [thread overview]
Message-ID: <20191210210402.8367-38-sashal@kernel.org> (raw)
In-Reply-To: <20191210210402.8367-1-sashal@kernel.org>
From: Kefeng Wang <wangkefeng.wang@huawei.com>
[ Upstream commit 2455d417c03aa0cbafed04c46cbb354643238318 ]
If v4l2_m2m_init() fails, m2m_dev pointer will be set ERR_PTR(-ENOMEM),
then kfree m2m_dev will trigger BUG_ON, see below, fix it by setting m2m_dev
to NULL.
vim2m vim2m.0: Failed to init mem2mem device
------------[ cut here ]------------
kernel BUG at mm/slub.c:3944!
invalid opcode: 0000 [#1] SMP PTI
CPU: 11 PID: 9061 Comm: insmod Tainted: G E 5.2.0-rc2 #81
Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
RIP: 0010:kfree+0x11a/0x160
Call Trace:
vim2m_device_release+0x3f/0x50 [vim2m]
device_release+0x27/0x80
kobject_release+0x68/0x190
vim2m_probe+0x20f/0x280 [vim2m]
platform_drv_probe+0x37/0x90
really_probe+0xef/0x3d0
driver_probe_device+0x110/0x120
device_driver_attach+0x4f/0x60
__driver_attach+0x9a/0x140
? device_driver_attach+0x60/0x60
bus_for_each_dev+0x76/0xc0
? klist_add_tail+0x57/0x70
bus_add_driver+0x141/0x210
driver_register+0x5b/0xe0
vim2m_init+0x29/0x1000 [vim2m]
do_one_initcall+0x46/0x1f4
? __slab_alloc+0x1c/0x30
? kmem_cache_alloc_trace+0x167/0x1b0
do_init_module+0x5b/0x21f
load_module+0x1add/0x1fb0
? __do_sys_finit_module+0xe9/0x110
__do_sys_finit_module+0xe9/0x110
do_syscall_64+0x5b/0x1c0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes: ea6c7e34f3b2 ("media: vim2m: replace devm_kzalloc by kzalloc")
Reported-by: Hulk Robot <hulkci@huawei.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/media/platform/vim2m.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c
index 2d79cdc130c58..e17792f837f82 100644
--- a/drivers/media/platform/vim2m.c
+++ b/drivers/media/platform/vim2m.c
@@ -1346,6 +1346,7 @@ static int vim2m_probe(struct platform_device *pdev)
if (IS_ERR(dev->m2m_dev)) {
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
ret = PTR_ERR(dev->m2m_dev);
+ dev->m2m_dev = NULL;
goto error_dev;
}
--
2.20.1
next prev parent reply other threads:[~2019-12-10 21:05 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-10 20:58 [PATCH AUTOSEL 5.4 001/350] drm/vc4/vc4_hdmi: fill in connector info Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 002/350] drm/virtio: switch virtio_gpu_wait_ioctl() to gem helper Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 003/350] drm: mst: Fix query_payload ack reply struct Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 004/350] drm/mipi-dbi: fix a loop in debugfs code Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 005/350] drm/panel: Add missing drm_panel_init() in panel drivers Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 006/350] drm: exynos: exynos_hdmi: use cec_notifier_conn_(un)register Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 007/350] drm: Use EOPNOTSUPP, not ENOTSUPP Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 008/350] drm/amd/display: verify stream link before link test Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 009/350] drm/bridge: analogix-anx78xx: silence -EPROBE_DEFER warnings Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 010/350] drm/amd/display: OTC underflow fix Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 011/350] iio: max31856: add missing of_node and parent references to iio_dev Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 012/350] iio: light: bh1750: Resolve compiler warning and make code more readable Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 013/350] drm/amdgpu/sriov: add ring_stop before ring_create in psp v11 code Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 014/350] drm/amdgpu: grab the id mgr lock while accessing passid_mapping Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 015/350] drm/ttm: return -EBUSY on pipelining with no_gpu_wait (v2) Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 016/350] drm/amd/display: Rebuild mapped resources after pipe split Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 017/350] ath10k: add cleanup in ath10k_sta_state() Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 018/350] drm/amd/display: Handle virtual signal type in disable_link() Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 019/350] iio: tcs3414: fix iio_triggered_buffer_{pre,post}enable positions Sasha Levin
2019-12-15 15:52 ` Jonathan Cameron
2019-12-19 15:22 ` Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 020/350] ath10k: Check if station exists before forwarding tx airtime report Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 021/350] spi: Add call to spi_slave_abort() function when spidev driver is released Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 022/350] drm/meson: vclk: use the correct G12A frac max value Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 023/350] staging: rtl8192u: fix multiple memory leaks on error path Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 024/350] staging: rtl8188eu: fix possible null dereference Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 025/350] objtool: add kunit_try_catch_throw to the noreturn list Sasha Levin
2019-12-10 21:25 ` Brendan Higgins
2019-12-19 15:27 ` Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 026/350] rtlwifi: prevent memory leak in rtl_usb_probe Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 027/350] libertas: fix a potential NULL pointer dereference Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 028/350] Revert "pinctrl: sh-pfc: r8a77990: Fix MOD_SEL1 bit30 when using SSI_SCK2 and SSI_WS2" Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 029/350] Revert "pinctrl: sh-pfc: r8a77990: Fix MOD_SEL1 bit31 when using SIM0_D" Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 030/350] ath10k: fix backtrace on coredump Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 031/350] IB/iser: bound protection_sg size by data_sg size Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 032/350] drm/komeda: Workaround for broken FLIP_COMPLETE timestamps Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 033/350] spi: gpio: prevent memory leak in spi_gpio_probe Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 034/350] media: am437x-vpfe: Setting STD to current value is not an error Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 035/350] media: cedrus: fill in bus_info for media device Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 036/350] media: seco-cec: Add a missing 'release_region()' in an error handling path Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 037/350] media: vim2m: Fix abort issue Sasha Levin
2019-12-10 20:58 ` Sasha Levin [this message]
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 039/350] media: max2175: Fix build error without CONFIG_REGMAP_I2C Sasha Levin
2019-12-10 20:58 ` [PATCH AUTOSEL 5.4 040/350] media: ov6650: Fix control handler not freed on init error Sasha Levin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191210210402.8367-38-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=hulkci@huawei.com \
--cc=hverkuil-cisco@xs4all.nl \
--cc=laurent.pinchart@ideasonboard.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=mchehab+samsung@kernel.org \
--cc=stable@vger.kernel.org \
--cc=wangkefeng.wang@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome