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2019-12-01Merge tag 'compat-ioctl-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playgroundLinus Torvalds1-3/+1
Pull removal of most of fs/compat_ioctl.c from Arnd Bergmann: "As part of the cleanup of some remaining y2038 issues, I came to fs/compat_ioctl.c, which still has a couple of commands that need support for time64_t. In completely unrelated work, I spent time on cleaning up parts of this file in the past, moving things out into drivers instead. After Al Viro reviewed an earlier version of this series and did a lot more of that cleanup, I decided to try to completely eliminate the rest of it and move it all into drivers. This series incorporates some of Al's work and many patches of my own, but in the end stops short of actually removing the last part, which is the scsi ioctl handlers. I have patches for those as well, but they need more testing or possibly a rewrite" * tag 'compat-ioctl-5.5' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground: (42 commits) scsi: sd: enable compat ioctls for sed-opal pktcdvd: add compat_ioctl handler compat_ioctl: move SG_GET_REQUEST_TABLE handling compat_ioctl: ppp: move simple commands into ppp_generic.c compat_ioctl: handle PPPIOCGIDLE for 64-bit time_t compat_ioctl: move PPPIOCSCOMPRESS to ppp_generic compat_ioctl: unify copy-in of ppp filters tty: handle compat PPP ioctls compat_ioctl: move SIOCOUTQ out of compat_ioctl.c compat_ioctl: handle SIOCOUTQNSD af_unix: add compat_ioctl support compat_ioctl: reimplement SG_IO handling compat_ioctl: move WDIOC handling into wdt drivers fs: compat_ioctl: move FITRIM emulation into file systems gfs2: add compat_ioctl support compat_ioctl: remove unused convert_in_user macro compat_ioctl: remove last RAID handling code compat_ioctl: remove /dev/raw ioctl translation compat_ioctl: remove PCI ioctl translation compat_ioctl: remove joystick ioctl translation ...
2019-11-27Merge tag 'drm-next-2019-11-27' of git://anongit.freedesktop.org/drm/drmLinus Torvalds9-18/+21
Pull drm updates from Dave Airlie: "Lots of stuff in here, though it hasn't been too insane this merge apart from dealing with the security fun. uapi: - export different colorspace properties on DP vs HDMI - new fourcc for ARM 16x16 block format - syncobj: allow querying last submitted timeline value - DRM_FORMAT_BIG_ENDIAN defined as unsigned core: - allow using gem vma manager in ttm - connector/encoder/bridge doc fixes - allow more than 3 encoders for a connector - displayport mst suspend/resume reprobing support - vram lazy unmapping, uniform vram mm and gem vram - edid cleanups + AVI informframe bar info - displayport helpers - dpcd parser added dp_cec: - Allow a connector to be associated with a cec device ttm: - pipelining with no_gpu_wait fix - always keep BOs on the LRU sched: - allow free_job routine to sleep i915: - Block userptr from mappable GTT - i915 perf uapi versioning - OA stream dynamic reconfiguration - make context persistence optional - introduce DRM_I915_UNSTABLE Kconfig - add fake lmem testing under unstable - BT.2020 support for DP MSA - struct mutex elimination - Tigerlake display/PLL/power management improvements - Jasper Lake PCH support - refactor PMU for multiple GPUs - Icelake firmware update - Split out vga + switcheroo code amdgpu: - implement dma-buf import/export without helpers - vega20 RAS enablement - DC i2c over aux fixes - renoir GPU reset - DC HDCP support - BACO support for CI/VI asics - MSI-X support - Arcturus EEPROM support - Arcturus VCN encode support - VCN dynamic powergating on RV/RV2 amdkfd: - add navi12/14/renoir support to kfd radeon: - SI dpm fix ported from amdgpu - fix bad DMA on ppc platforms gma500: - memory leak fixes qxl: - convert to new gem mmap exynos: - build warning fix komeda: - add aclk sysfs attribute v3d: - userspace cleanup uapi change i810: - fix for underflow in dispatch ioctls ast: - refactor show_cursor mgag200: - refactor show_cursor arcgpu: - encoder finding improvements mediatek: - mipi_tx, dsi and partial crtc support for MT8183 SoC - rotation support meson: - add suspend/resume support omap: - misc refactors tegra: - DisplayPort support for Tegra 210, 186 and 194. - IOMMU-backed DMA API fixes panfrost: - fix lockdep issue - simplify devfreq integration rcar-du: - R8A774B1 SoC support - fixes for H2 ES2.0 sun4i: - vcc-dsi regulator support virtio-gpu: - vmexit vs spinlock fix - move to gem shmem helpers - handle large command buffers with cma" * tag 'drm-next-2019-11-27' of git://anongit.freedesktop.org/drm/drm: (1855 commits) drm/amdgpu: invalidate mmhub semaphore workaround in gmc9/gmc10 drm/amdgpu: initialize vm_inv_eng0_sem for gfxhub and mmhub drm/amd/amdgpu/sriov skip RLCG s/r list for arcturus VF. drm/amd/amdgpu/sriov temporarily skip ras,dtm,hdcp for arcturus VF drm/amdgpu/gfx10: re-init clear state buffer after gpu reset merge fix for "ftrace: Rework event_create_dir()" drm/amdgpu: Update Arcturus golden registers drm/amdgpu/gfx10: fix out-of-bound mqd_backup array access drm/amdgpu/gfx10: explicitly wait for cp idle after halt/unhalt Revert "drm/amd/display: enable S/G for RAVEN chip" drm/amdgpu: disable gfxoff on original raven drm/amdgpu: remove experimental flag for Navi14 drm/amdgpu: disable gfxoff when using register read interface drm/amdgpu/powerplay: properly set PP_GFXOFF_MASK (v2) drm/amdgpu: fix bad DMA from INTERRUPT_CNTL2 drm/radeon: fix bad DMA from INTERRUPT_CNTL2 drm/amd/display: Fix debugfs on MST connectors drm/amdgpu/nv: add asic func for fetching vbios from rom directly drm/amdgpu: put flush_delayed_work at first drm/amdgpu/vcn2.5: fix the enc loop with hw fini ...
2019-11-27Merge tag 'driver-core-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-coreLinus Torvalds1-23/+3
Pull driver core updates from Greg KH: "Here is the "big" set of driver core patches for 5.5-rc1 There's a few minor cleanups and fixes in here, but the majority of the patches in here fall into two buckets: - debugfs api cleanups and fixes - driver core device link support for boot dependancy issues The debugfs api cleanups are working to slowly refactor the debugfs apis so that it is even harder to use incorrectly. That work has been happening for the past few kernel releases and will continue over time, it's a long-term project/goal The driver core device link support missed 5.4 by just a bit, so it's been sitting and baking for many months now. It's from Saravana Kannan to help resolve the problems that DT-based systems have at boot time with dependancy graphs and kernel modules. Turns out that no one has actually tried to build a generic arm64 kernel with loads of modules and have it "just work" for a variety of platforms (like a distro kernel). The big problem turned out to be a lack of dependency information between different areas of DT entries, and the work here resolves that problem and now allows devices to boot properly, and quicker than a monolith kernel. All of these patches have been in linux-next for a long time with no reported issues" * tag 'driver-core-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (68 commits) tracing: Remove unnecessary DEBUG_FS dependency of: property: Add device link support for interrupt-parent, dmas and -gpio(s) debugfs: Fix !DEBUG_FS debugfs_create_automount of: property: Add device link support for "iommu-map" of: property: Fix the semantics of of_is_ancestor_of() i2c: of: Populate fwnode in of_i2c_get_board_info() drivers: base: Fix Kconfig indentation firmware_loader: Fix labels with comma for builtin firmware driver core: Allow device link operations inside sync_state() driver core: platform: Declare ret variable only once cpu-topology: declare parse_acpi_topology in <linux/arch_topology.h> crypto: hisilicon: no need to check return value of debugfs_create functions driver core: platform: use the correct callback type for bus_find_device firmware_class: make firmware caching configurable driver core: Clarify documentation for fwnode_operations.add_links() mailbox: tegra: Fix superfluous IRQ error message net: caif: Fix debugfs on 64-bit platforms mac80211: Use debugfs_create_xul() helper media: c8sectpfe: no need to check return value of debugfs_create functions of: property: Add device link support for iommus, mboxes and io-channels ...
2019-11-27Merge tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds1-9/+1
Pull USB updates from Greg KH: "Here is the big set of USB patches for 5.5-rc1 Lots of little things in here: - typec updates and additions - usb-serial drivers cleanups and fixes - misc USB drivers cleanups and fixes - gadget drivers new features and controllers added - usual xhci additions - other minor changes All of these have been in linux-next with no reported issues" * tag 'usb-5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (223 commits) usb: gadget: udc: gr_udc: create debugfs directory under usb root usb: gadget: atmel: create debugfs directory under usb root usb: musb: create debugfs directory under usb root usb: serial: Fix Kconfig indentation usb: misc: Fix Kconfig indentation usb: gadget: Fix Kconfig indentation usb: host: Fix Kconfig indentation usb: dwc3: Fix Kconfig indentation usb: gadget: configfs: Fix missing spin_lock_init() usb-storage: Disable UAS on JMicron SATA enclosure USB: documentation: flags on usb-storage versus UAS USB: uas: heed CAPACITY_HEURISTICS USB: uas: honor flag to avoid CAPACITY16 usb: host: xhci-tegra: Correct phy enable sequence usb-serial: cp201x: support Mark-10 digital force gauge usb: chipidea: imx: pinctrl for HSIC is optional usb: chipidea: imx: refine the error handling for hsic usb: chipidea: imx: change hsic power regulator as optional usb: chipidea: imx: check data->usbmisc_data against NULL before access usb: chipidea: core: change vbus-regulator as optional ...
2019-11-26Merge tag 'media/v5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds202-4133/+8656
Pull media updates from Mauro Carvalho Chehab: - uAPI documentation for stateless decoders - Added a new CEC ioctl together with its documentation - Improved IPU3 documentation - New i2c drivers: hi556 and imx290 - Added support on Vivid driver for meta streams - Added de-interlace support for sunxi subdriver - Added a few new remote controler keymaps - Added H.265 support for Sunxi Cedrus driver - Another round of random driver cleanups, fixes and improvements * tag 'media/v5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (361 commits) media: Revert "media: mtk-vcodec: Remove extra area allocation in an input buffer on encoding" media: hantro: Set H264 FIELDPIC_FLAG_E flag correctly media: hantro: Remove now unused H264 pic_size media: hantro: Use output buffer width and height for H264 decoding media: hantro: Reduce H264 extra space for motion vectors media: hantro: Fix H264 motion vector buffer offset media: ti-vpe: vpe: fix compatible to match bindings media: dt-bindings: media: ti-vpe: Document VPE driver media: zr364xx: remove redundant assigmnent to idx, clean up code media: Documentation: media: *_DEFAULT targets for subdevs media: hantro: Fix s_fmt for dynamic resolution changes media: i2c: Use the correct style for SPDX License Identifier media: siano: Use the correct style for SPDX License Identifier media: vicodec: media_device_cleanup was called too early media: vim2m: media_device_cleanup was called too early media: cedrus: Increase maximum supported size media: cedrus: Fix H264 4k support media: cedrus: Properly signal size in mode register media: v4l2-ctrl: Lock main_hdl on operations of requests_queued. media: si470x-i2c: add missed operations in remove ...
2019-11-26Merge branch 'patchwork' into v4l_for_linusMauro Carvalho Chehab200-4100/+8623
* patchwork: (360 commits) media: Revert "media: mtk-vcodec: Remove extra area allocation in an input buffer on encoding" media: hantro: Set H264 FIELDPIC_FLAG_E flag correctly media: hantro: Remove now unused H264 pic_size media: hantro: Use output buffer width and height for H264 decoding media: hantro: Reduce H264 extra space for motion vectors media: hantro: Fix H264 motion vector buffer offset media: ti-vpe: vpe: fix compatible to match bindings media: dt-bindings: media: ti-vpe: Document VPE driver media: zr364xx: remove redundant assigmnent to idx, clean up code media: Documentation: media: *_DEFAULT targets for subdevs media: hantro: Fix s_fmt for dynamic resolution changes media: i2c: Use the correct style for SPDX License Identifier media: siano: Use the correct style for SPDX License Identifier media: vicodec: media_device_cleanup was called too early media: vim2m: media_device_cleanup was called too early media: cedrus: Increase maximum supported size media: cedrus: Fix H264 4k support media: cedrus: Properly signal size in mode register media: v4l2-ctrl: Lock main_hdl on operations of requests_queued. media: si470x-i2c: add missed operations in remove ...
2019-11-25Merge tag 'asoc-v5.5-2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linusTakashi Iwai1-2/+1
ASoC: More updates for v5.5 Some more development work for v5.5. Highlights include: - More cleanups from Morimoto-san. - Trigger word detection for RT5677. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-14media: uvcvideo: drop error check of debugfs_create_dir()Chunfeng Yun1-9/+1
No need check the return value of debugfs_create_dir() Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-1-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-11media: tw686x: audio: Avoid non-standard macro usageTakashi Iwai1-1/+1
Pass the device pointer from the PCI pointer directly, instead of a non-standard macro. The macro didn't give any better readability. Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-11media: solo6x10: Remove superfluous snd_dma_continuous_data()Takashi Iwai2-3/+2
The recent change (commit 08422d2c559d: "ALSA: memalloc: Allow NULL device for SNDRV_DMA_TYPE_CONTINOUS type") made the PCM preallocation helper accepting NULL as the device pointer for the default usage. Drop the snd_dma_continuous_data() usage that became superfluous from the callers. Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-10media: Revert "media: mtk-vcodec: Remove extra area allocation in an input buffer on encoding"Hans Verkuil1-3/+6
This reverts commit 3192b2ca79b3f72fbc0eab9cd95432e3c317ab0d. There are indications that this patch causes problems on some platforms due to some hardware prefetch. Reverting this patch for now until this is better understood. Reported-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: ti-vpe: vpe: fix compatible to match bindingsBenoit Parrot1-1/+1
Update the compatible string to match the updated bindings. Signed-off-by: Benoit Parrot <bparrot@ti.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: zr364xx: remove redundant assigmnent to idx, clean up codeColin Ian King1-4/+2
The variable cable_type is being initialized with a value that is never read and is being re-assigned a little later on. Replace the redundant initializtion with the assignment that occurs a little later. Also initialize frm too rather than have a later assignment. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: i2c: Use the correct style for SPDX License IdentifierNishad Kamdar4-5/+5
This patch corrects the SPDX License Identifier style in header files related to I2C controlled media codec drivers. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used) Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 and some manual changes. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: siano: Use the correct style for SPDX License IdentifierNishad Kamdar1-1/+1
This patch corrects the SPDX License Identifier style in header file related to Siano Mobile Silicon Digital TV. For C header files Documentation/process/license-rules.rst mandates C-like comments (opposed to C source files where C++ style should be used) Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46 Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: vicodec: media_device_cleanup was called too earlyHans Verkuil1-1/+3
Running the contrib/test/test-media script in v4l-utils with the vicodec argument will cause this kernel warning: [ 372.298824] ------------[ cut here ]------------ [ 372.298848] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 372.298896] WARNING: CPU: 11 PID: 2220 at kernel/locking/mutex.c:938 __mutex_lock+0x919/0xc10 [ 372.298907] Modules linked in: vicodec v4l2_mem2mem vivid rc_cec v4l2_tpg videobuf2_dma_contig cec rc_core v4l2_dv_timings videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc vmw_balloon vmw_vmci button vmwgfx [last unloaded: vimc] [ 372.298961] CPU: 11 PID: 2220 Comm: sleep Not tainted 5.4.0-rc1-test-no #150 [ 372.298970] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/29/2019 [ 372.298983] RIP: 0010:__mutex_lock+0x919/0xc10 [ 372.298995] Code: 59 83 e8 9a fc 16 ff 44 8b 05 23 61 38 01 45 85 c0 0f 85 ef f7 ff ff 48 c7 c6 a0 1f 87 82 48 c7 c7 a0 1e 87 82 e8 cd bb f7 fe <0f> 0b e9 d5 f7 ff ff f6 c3 04 0f 84 3b fd ff ff 49 89 df 41 83 e7 [ 372.299004] RSP: 0018:ffff8881b400fb80 EFLAGS: 00010286 [ 372.299014] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 372.299022] RDX: 0000000000000003 RSI: 0000000000000004 RDI: ffffed1036801f62 [ 372.299030] RBP: ffff8881b400fcf0 R08: ffffffff81217c91 R09: fffffbfff061c271 [ 372.299038] R10: fffffbfff061c270 R11: ffffffff830e1383 R12: ffff88814761dc80 [ 372.299046] R13: 0000000000000000 R14: ffff88814761cbf0 R15: ffff88814761d030 [ 372.299055] FS: 0000000000000000(0000) GS:ffff8881b68c0000(0000) knlGS:0000000000000000 [ 372.299063] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 372.299071] CR2: 00007f606d78aa20 CR3: 0000000003013002 CR4: 00000000001606e0 [ 372.299153] Call Trace: [ 372.299176] ? __kasan_slab_free+0x12f/0x180 [ 372.299187] ? kmem_cache_free+0x9b/0x250 [ 372.299200] ? do_exit+0xcdf/0x1200 [ 372.299210] ? do_group_exit+0x85/0x130 [ 372.299220] ? __x64_sys_exit_group+0x23/0x30 [ 372.299231] ? do_syscall_64+0x5e/0x1c0 [ 372.299241] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 372.299295] ? v4l2_release+0xed/0x190 [videodev] [ 372.299309] ? mutex_lock_io_nested+0xb80/0xb80 [ 372.299323] ? find_held_lock+0x85/0xa0 [ 372.299335] ? fsnotify+0x5b0/0x600 [ 372.299351] ? locks_remove_file+0x78/0x2b0 [ 372.299363] ? __fsnotify_update_child_dentry_flags.part.0+0x170/0x170 [ 372.299383] ? vidioc_querycap+0x50/0x50 [vicodec] [ 372.299426] ? v4l2_release+0xed/0x190 [videodev] [ 372.299467] v4l2_release+0xed/0x190 [videodev] [ 372.299484] __fput+0x15a/0x390 [ 372.299499] task_work_run+0xb2/0xe0 [ 372.299512] do_exit+0x4d0/0x1200 [ 372.299528] ? do_user_addr_fault+0x367/0x610 [ 372.299538] ? release_task+0x990/0x990 [ 372.299552] ? rwsem_spin_on_owner+0x170/0x170 [ 372.299567] ? vmacache_find+0xb2/0x100 [ 372.299580] do_group_exit+0x85/0x130 [ 372.299592] __x64_sys_exit_group+0x23/0x30 [ 372.299602] do_syscall_64+0x5e/0x1c0 [ 372.299614] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 372.299624] RIP: 0033:0x7f606d74a9d6 [ 372.299640] Code: Bad RIP value. [ 372.299648] RSP: 002b:00007fff65364468 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 372.299658] RAX: ffffffffffffffda RBX: 00007f606d83b760 RCX: 00007f606d74a9d6 [ 372.299666] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 372.299673] RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80 [ 372.299681] R10: 00007fff65364334 R11: 0000000000000246 R12: 00007f606d83b760 [ 372.299689] R13: 0000000000000002 R14: 00007f606d844428 R15: 0000000000000000 [ 372.299704] ---[ end trace add7d62ca4bc65e3 ]--- This is caused by media_device_cleanup() which destroys v4l2_dev->mdev->req_queue_mutex. But v4l2_release() tries to lock that mutex after media_device_cleanup() is called. By moving media_device_cleanup() to the v4l2_device's release function it is guaranteed that the mutex is valid whenever v4l2_release is called. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-11-10media: vim2m: media_device_cleanup was called too earlyHans Verkuil1-1/+3
Running the contrib/test/test-media script in v4l-utils with the vim2m argument will cause this kernel warning: [ 554.430157] ------------[ cut here ]------------ [ 554.433034] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 554.433064] WARNING: CPU: 0 PID: 616 at kernel/locking/mutex.c:938 __mutex_lock+0xd7a/0x1380 [ 554.439736] Modules linked in: vim2m v4l2_mem2mem vivid rc_cec videobuf2_dma_contig v4l2_dv_timings cec videobuf2_vmalloc videobuf2_memops v4l2_tpg videobuf2_v4l2 videobuf2_common videodev mc rc_core [last unloaded: vivid] [ 554.445794] CPU: 0 PID: 616 Comm: sleep Not tainted 5.4.0-rc1-virtme #1 [ 554.448481] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014 [ 554.453088] RIP: 0010:__mutex_lock+0xd7a/0x1380 [ 554.454955] Code: d2 0f 85 de 05 00 00 44 8b 05 82 d9 f7 00 45 85 c0 0f 85 bf f3 ff ff 48 c7 c6 e0 30 a6 b7 48 c7 c7 e0 2e a6 b7 e8 5c 76 36 fe <0f> 0b e9 a5 f3 ff ff 65 48 8b 1c 25 80 ef 01 00 be 08 00 00 00 48 [ 554.462836] RSP: 0018:ffff88803a4cfad0 EFLAGS: 00010282 [ 554.465129] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb5a3d24f [ 554.468143] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffffb85273f4 [ 554.471000] RBP: ffff88803a4cfc50 R08: fffffbfff701e681 R09: fffffbfff701e681 [ 554.473990] R10: fffffbfff701e680 R11: ffffffffb80f3403 R12: 0000000000000000 [ 554.476831] R13: dffffc0000000000 R14: ffffffffb9714f00 R15: ffff888053103fc8 [ 554.479622] FS: 00007fac6358a540(0000) GS:ffff88805d000000(0000) knlGS:0000000000000000 [ 554.482673] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 554.484949] CR2: 00007fac6343faf0 CR3: 0000000036c22000 CR4: 00000000003406f0 [ 554.487811] Call Trace: [ 554.488860] ? v4l2_release+0x1b8/0x390 [videodev] [ 554.490818] ? do_exit+0x946/0x2980 [ 554.492269] ? mutex_lock_io_nested+0x1250/0x1250 [ 554.494128] ? __lock_acquire+0xe90/0x3c30 [ 554.495774] ? fsnotify_first_mark+0x120/0x120 [ 554.497487] ? vim2m_device_release+0x50/0x50 [vim2m] [ 554.499469] ? v4l2_release+0x1b8/0x390 [videodev] [ 554.501493] v4l2_release+0x1b8/0x390 [videodev] [ 554.503430] __fput+0x256/0x790 [ 554.504711] task_work_run+0x109/0x190 [ 554.506145] do_exit+0x95e/0x2980 [ 554.507421] ? vfs_lock_file+0x21/0xf0 [ 554.509013] ? find_held_lock+0x33/0x1c0 [ 554.510382] ? __close_fd+0xee/0x190 [ 554.511862] ? release_task.part.21+0x1310/0x1310 [ 554.513701] ? lock_downgrade+0x6d0/0x6d0 [ 554.515299] do_group_exit+0xeb/0x2d0 [ 554.516862] __x64_sys_exit_group+0x35/0x40 [ 554.518610] do_syscall_64+0x90/0x450 [ 554.520142] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 554.522289] RIP: 0033:0x7fac6348ecf6 [ 554.523876] Code: Bad RIP value. [ 554.525294] RSP: 002b:00007ffe6373dc58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 554.528555] RAX: ffffffffffffffda RBX: 00007fac6357f760 RCX: 00007fac6348ecf6 [ 554.531537] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 554.534709] RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80 [ 554.536752] R10: 00007ffe6373db24 R11: 0000000000000246 R12: 00007fac6357f760 [ 554.538643] R13: 0000000000000002 R14: 00007fac63588428 R15: 0000000000000000 [ 554.540634] irq event stamp: 21731 [ 554.541618] hardirqs last enabled at (21731): [<ffffffffb75b3cd4>] _raw_spin_unlock_irq+0x24/0x30 [ 554.544145] hardirqs last disabled at (21730): [<ffffffffb75b3ada>] _raw_spin_lock_irq+0xa/0x40 [ 554.547027] softirqs last enabled at (20148): [<ffffffffb780064d>] __do_softirq+0x64d/0x906 [ 554.550385] softirqs last disabled at (19857): [<ffffffffb5926bd5>] irq_exit+0x175/0x1a0 [ 554.553668] ---[ end trace a389c80c2ca84244 ]--- This is caused by media_device_cleanup() which destroys v4l2_dev->mdev->req_queue_mutex. But v4l2_release() tries to lock that mutex after media_device_cleanup() is called. By moving media_device_cleanup() to the video_device's release function it is guaranteed that the mutex is valid whenever v4l2_release is called. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-11-10media: v4l2-ctrl: Lock main_hdl on operations of requests_queued.Pi-Hsun Shih1-0/+7
There's a race condition between the list_del_init in the v4l2_ctrl_request_complete, and the list_add_tail in the v4l2_ctrl_request_queue, since they can be called in different thread and the requests_queued list is not protected by a lock. This can lead to that the v4l2_ctrl_handler is still in the requests_queued list while the request_is_queued is already set to false, which would cause use-after-free if the v4l2_ctrl_handler is later released. Fix this by locking the ->lock of main_hdl (which is the owner of the requests_queued list) when doing list operations on the ->requests_queued list. Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: si470x-i2c: add missed operations in removeChuhong Yuan1-0/+2
The driver misses calling v4l2_ctrl_handler_free and v4l2_device_unregister in remove like what is done in probe failure. Add the calls to fix it. Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: coda: disable decoder crop selectionsPhilipp Zabel1-1/+2
Disable output side crop selections for the decoder. This fixes the following v4l2-compliance complaint: fail: v4l2-test-formats.cpp(1576): IS_DECODER(node) test Cropping: FAIL Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: v4l2-ioctl.c: zero reserved fields for S/TRY_FMTHans Verkuil1-12/+12
v4l2_vbi_format, v4l2_sliced_vbi_format and v4l2_sdr_format have a reserved array at the end that should be zeroed by drivers as per the V4L2 spec. Older drivers often do not do this, so just handle this in the core. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: coda: disable encoder compose selectionsPhilipp Zabel1-1/+2
Disable capture side compose selections for the encoder. This fixes the following v4l2-compliance complaint: fail: v4l2-test-formats.cpp(1662): IS_ENCODER(node) test Composing: FAIL Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: mtk-vcodec: Remove extra area allocation in an input buffer on encodingHirokazu Honda1-6/+3
MediaTek encoder allocates non pixel data area for an input buffer every plane. As the input buffer should be read-only, the driver should not write anything in the buffer. Therefore, the extra data should be unnecessary. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: vimc: upon streaming, check that the pipeline starts with a source entityDafna Hirschfeld3-2/+29
Userspace can disable links and create pipelines that do not start with a source entity. Trying to stream from such a pipeline should fail with -EPIPE currently this is not handled and cause kernel crash. Reproducing the crash: media-ctl -d0 -l "5:1->21:0[0]" -v v4l2-ctl -z platform:vimc -d "RGB/YUV Capture" -v width=1920,height=1440 v4l2-ctl --stream-mmap --stream-count=100 -d /dev/video2 Panic message: [ 39.078841][ T248] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 39.079338][ T248] #PF: supervisor read access in kernel mode [ 39.079704][ T248] #PF: error_code(0x0000) - not-present page [ 39.080071][ T248] PGD 0 P4D 0 [ 39.080279][ T248] Oops: 0000 [#1] SMP PTI [ 39.080546][ T248] CPU: 0 PID: 248 Comm: vimc-streamer t Not tainted 5.4.0-rc1+ #17 [ 39.081030][ T248] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014 [ 39.081779][ T248] RIP: 0010:vimc_sca_process_frame+0xdb/0x210 [vimc] [ 39.082191][ T248] Code: 44 8d 0c 28 8b 93 a4 01 00 00 48 8b 8b 98 01 00 00 85 d2 74 40 48 8b 74 24 10 8d 7a ff 4c 01 c9 31 d2 4c 01 fe eb 03 4c 89 c2 <44> 0f b6 04 16 44 88 04 11 4c 8d 42 01 48 39 fa 75 eb 8b 93 a4 01 [ 39.083436][ T248] RSP: 0018:ffffb15a005abe90 EFLAGS: 00010246 [ 39.083808][ T248] RAX: 0000000000000000 RBX: ffffa3fdc46d2e00 RCX: ffffb15a02579000 [ 39.084298][ T248] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 [ 39.084792][ T248] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 39.085280][ T248] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 39.085770][ T248] R13: ffffa3fdc46d2ee0 R14: 0000000000000000 R15: 0000000000000000 [ 39.086258][ T248] FS: 0000000000000000(0000) GS:ffffa3fdc7800000(0000) knlGS:0000000000000000 [ 39.086806][ T248] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.087217][ T248] CR2: 0000000000000000 CR3: 0000000003c92005 CR4: 0000000000360ef0 [ 39.087706][ T248] Call Trace: [ 39.087909][ T248] ? vimc_streamer_pipeline_terminate+0x90/0x90 [vimc] [ 39.088318][ T248] vimc_streamer_thread+0x7c/0xe0 [vimc] [ 39.088663][ T248] kthread+0x10d/0x130 [ 39.088919][ T248] ? kthread_park+0x80/0x80 [ 39.089205][ T248] ret_from_fork+0x35/0x40 [ 39.089475][ T248] Modules linked in: vimc videobuf2_vmalloc videobuf2_memops v4l2_tpg videobuf2_v4l2 videobuf2_common videodev mc [ 39.090208][ T248] CR2: 0000000000000000 [ 39.090463][ T248] ---[ end trace 697650fefbf78bee ]--- [ 39.090796][ T248] RIP: 0010:vimc_sca_process_frame+0xdb/0x210 [vimc] [ 39.091209][ T248] Code: 44 8d 0c 28 8b 93 a4 01 00 00 48 8b 8b 98 01 00 00 85 d2 74 40 48 8b 74 24 10 8d 7a ff 4c 01 c9 31 d2 4c 01 fe eb 03 4c 89 c2 <44> 0f b6 04 16 44 88 04 11 4c 8d 42 01 48 39 fa 75 eb 8b 93 a4 01 [ 39.092417][ T248] RSP: 0018:ffffb15a005abe90 EFLAGS: 00010246 [ 39.092789][ T248] RAX: 0000000000000000 RBX: ffffa3fdc46d2e00 RCX: ffffb15a02579000 [ 39.093278][ T248] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 [ 39.093766][ T248] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 39.094254][ T248] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 39.094742][ T248] R13: ffffa3fdc46d2ee0 R14: 0000000000000000 R15: 0000000000000000 [ 39.095309][ T248] FS: 0000000000000000(0000) GS:ffffa3fdc7800000(0000) knlGS:0000000000000000 [ 39.095974][ T248] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.096372][ T248] CR2: 0000000000000000 CR3: 0000000003c92005 CR4: 0000000000360ef0 Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: aspeed-video: Fix memory leaks in aspeed_video_probeNavid Emamdoost1-1/+2
In the implementation of aspeed_video_probe() the allocated memory for video should be released if either devm_ioremap_resource() or aspeed_video_init() or aspeed_video_setup_video() fails. Replace kzalloc() with devm_kzalloc to avoid explicit release for video. Fixes: d2b4387f3bdf ("media: platform: Add Aspeed Video Engine driver") Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com> Reviewed-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> Reviewed-by: Eddie James <eajames@linux.ibm.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-10media: v4l2: Use FIELD_SIZEOF directlyzhong jiang1-1/+1
It's more clear to use FIELD_SIZEOF instead of its implementation. Signed-off-by: zhong jiang <zhongjiang@huawei.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: c8sectpfe: no need to check return value of debugfs_create functionsGreg Kroah-Hartman1-23/+3
When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-media@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20191107085238.GA1285658@kroah.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-09media: rc: add keymap for Beelink GS1 remote controlClément Péron2-0/+85
Beelink GS1 Andoid TV Box ships with a simple NEC remote. Signed-off-by: Clément Péron <peron.clem@gmail.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: dvbsky: remove unused codeJan Pieter van Woerkom1-9/+0
remove unused code Signed-off-by: Jan Pieter van Woerkom <jp@jpvw.nl> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: flexcop-usb: ensure -EIO is returned on error conditionColin Ian King1-1/+1
An earlier commit hard coded a return 0 to function flexcop_usb_i2c_req even though the an -EIO was intended to be returned in the case where ret != buflen. Fix this by replacing the return 0 with the return of ret to return the error return code. Addresses-Coverity: ("Unused value") Fixes: b430eaba0be5 ("[media] flexcop-usb: don't use stack for DMA") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: b2c2-flexcop-usb: add sanity checkingOliver Neukum1-0/+3
The driver needs an isochronous endpoint to be present. It will oops in its absence. Add checking for it. Reported-by: syzbot+d93dff37e6a89431c158@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: coda: drop unused irqlockPhilipp Zabel2-3/+0
The irqlock spinlock has been unused from the start. Remove it. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: pvrusb2: Fix oops on tear-down when radio support is not presentMike Isely1-2/+7
In some device configurations there's no radio or radio support in the driver. That's OK, as the driver sets itself up accordingly. However on tear-down in these caes it's still trying to tear down radio related context when there isn't anything there, leading to dereferences through a null pointer and chaos follows. How this bug survived unfixed for 11 years in the pvrusb2 driver is a mystery to me. [hverkuil: fix two checkpatch warnings] Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: venus: remove invalid compat_ioctl32 handlerArnd Bergmann2-6/+0
v4l2_compat_ioctl32() is the function that calls into v4l2_file_operations->compat_ioctl32(), so setting that back to the same function leads to a trivial endless loop, followed by a kernel stack overrun. Remove the incorrect assignment. Cc: stable@vger.kernel.org Fixes: 7472c1c69138 ("[media] media: venus: vdec: add video decoder files") Fixes: aaaa93eda64b ("[media] media: venus: venc: add video encoder files") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: v4l2-mem2mem: Fix hold buf flag checksJernej Skrabec1-2/+2
Hold buf flag is set on output queue, not capture. Fix that. Fixes: f07602ac3887 ("media: v4l2-mem2mem: add new_frame detection") Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-09media: vimc: sen: remove unused kthread_sen fieldDafna Hirschfeld1-5/+0
The field kthread_sen in the vimc_sen_device is not set and used. So remove the field and the code that check if it is non NULL Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Cc: <stable@vger.kernel.org> # for v5.4 and up Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: v4l2-ctrl: Use p_const when possibleRicardo Ribalda Delgado1-8/+9
After adding a const pointer to ctrl_ptr, lets use it where it make sense. Suggested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: vivid: Add an area controlRicardo Ribalda Delgado1-0/+14
This control represents a generic read/write area. Suggested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: v4l2_ctrl: Add p_def to v4l2_ctrl_configRicardo Ribalda Delgado1-1/+1
This allows setting the default value on compound controls created via v4l2_ctrl_new_custom. Signed-off-by: Ricardo Ribalda Delgado <ribalda@kernel.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: exynos4-is: fix wrong mdev and v4l2 dev order in error pathSeung-Woo Kim1-3/+4
When driver is built as module and probe during insmod is deferred because of sensor subdevs, there is NULL pointer deference because mdev is cleaned up and then access it from v4l2_device_unregister(). Fix the wrong mdev and v4l2 dev order in error path of probe. This fixes below null pointer deference: Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = ca026f68 [00000000] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM [...] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) PC is at ida_free+0x7c/0x160 LR is at xas_start+0x44/0x204 [...] [<c0dafd60>] (ida_free) from [<c083c20c>] (__media_device_unregister_entity+0x18/0xc0) [<c083c20c>] (__media_device_unregister_entity) from [<c083c2e0>] (media_device_unregister_entity+0x2c/0x38) [<c083c2e0>] (media_device_unregister_entity) from [<c0843404>] (v4l2_device_release+0xd0/0x104) [<c0843404>] (v4l2_device_release) from [<c0632558>] (device_release+0x28/0x98) [<c0632558>] (device_release) from [<c0db1204>] (kobject_put+0xa4/0x208) [<c0db1204>] (kct_put) from [<bf00bac4>] (fimc_capture_subdev_unregistered+0x58/0x6c [s5p_fimc]) [<bf00bac4>] (fimc_capture_subdev_unregistered [s5p_fimc]) from [<c084a1cc>] (v4l2_device_unregister_subdev+0x6c/0xa8) [<c084a1cc>] (v4l2_device_unregister_subdev) from [<c084a350>] (v4l2_device_unregister+0x64/0x94) [<c084a350>] (v4l2_device_unregister) from [<bf0101ac>] (fimc_md_probe+0x4ec/0xaf8 [s5p_fimc]) [...] Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Fixes: 9832e155f1ed ("[media] media-device: split media initialization and registration") Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: vivid: Fix wrong locking that causes race conditions on streaming stopAlexander Popov3-9/+15
There is the same incorrect approach to locking implemented in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out() and sdr_cap_stop_streaming(). These functions are called during streaming stopping with vivid_dev.mutex locked. And they all do the same mistake while stopping their kthreads, which need to lock this mutex as well. See the example from vivid_stop_generating_vid_cap(): /* shutdown control thread */ vivid_grab_controls(dev, false); mutex_unlock(&dev->mutex); kthread_stop(dev->kthread_vid_cap); dev->kthread_vid_cap = NULL; mutex_lock(&dev->mutex); But when this mutex is unlocked, another vb2_fop_read() can lock it instead of vivid_thread_vid_cap() and manipulate the buffer queue. That causes a use-after-free access later. To fix those issues let's: 1. avoid unlocking the mutex in vivid_stop_generating_vid_cap(), vivid_stop_generating_vid_out() and sdr_cap_stop_streaming(); 2. use mutex_trylock() with schedule_timeout_uninterruptible() in the loops of the vivid kthread handlers. Signed-off-by: Alexander Popov <alex.popov@linux.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Tested-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Cc: <stable@vger.kernel.org> # for v3.18 and up Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: vivid: add vivid_create_queue() helperHans Verkuil3-149/+116
Refactor some of the vivid_create_instance code by using a new vivid_create_queue() helper function. Also add some sanity checks for the node_types vs input/output_types module options. This patch resolves these two smatch parse errors: drivers/media/platform/vivid/vivid-core.c:1679 vivid_create_instance() parse error: OOM: 3002600Kb sm_state_count = 6160113 drivers/media/platform/vivid/vivid-core.c: drivers/media/platform/vivid/vivid-core.c:1679 vivid_create_instance() parse error: __split_smt: function too hairy. Giving up after 33 seconds Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: siano: fix spelling mistake "ENBALE" -> "ENABLE"Colin Ian King2-4/+4
Macros MSG_SMS_ENBALE_TS_INTERFACE_REQ and MSG_SMS_ENBALE_TS_INTERFACE_RES contain a spelling mistake. Fix these by replacing ENBALE with ENABLE. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: mantis: fix two smatch errorsHans Verkuil2-6/+2
Drop two dprintk's that relied on a non-NULL mantis pointer when it was in fact a NULL pointer. Fix those warnings: drivers/media/pci/mantis/mantis_cards.c:73 mantis_irq_handler() error: we previously assumed 'mantis' could be null (see line 72) drivers/media/pci/mantis/hopper_cards.c:64 hopper_irq_handler() error: we previously assumed 'mantis' could be null (see line 63) Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: ov6650: fix smatch warningHans Verkuil1-1/+1
Initialize ret to 0 to fix this smatch error: drivers/media/i2c/ov6650.c:853 ov6650_video_probe() error: uninitialized symbol 'ret'. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: ti-vpe: fix smatch errorHans Verkuil1-1/+1
This patch fixes this error: drivers/media/platform/ti-vpe/vpdma.c:767 dump_dtd() error: '%pad' expects argument of type 'dma_addr_t*', argument 2 has type 'uint*' dtd->start_addr is a u32, so no need for %pad. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reviewed-by: Benoit Parrot <bparrot@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: em28xx: fix two smatch warningsHans Verkuil1-2/+2
Use sizeof instead of ARRAY_SIZE to fix this smatch warning: drivers/media/usb/em28xx/em28xx-i2c.c:952 em28xx_do_i2c_scan() warn: calling memset(x, y, ARRAY_SIZE()); Do the same for the em28xx_hash_mem() call in the same function. smatch didn't pick that up, but there too it should use sizeof instead of ARRAY_SIZE. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: rc/ite-cir: fix smatch warningHans Verkuil1-1/+1
Use sizeof instead of ARRAY_SIZE to fix this smatch warning: drivers/media/rc/ite-cir.c:385 ite_tx_ir() warn: calling memset(x, y, ARRAY_SIZE()); Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Acked-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-08media: mtk-vpu: fix two smatch warningsHans Verkuil1-2/+2
Drop the "id >= 0" test in two conditions to fix these warnings: drivers/media/platform/mtk-vpu/mtk_vpu.c:276 vpu_ipi_register() warn: always true condition '(id >= 0) => (0-u32max >= 0)' drivers/media/platform/mtk-vpu/mtk_vpu.c:401 vpu_wdt_reg_handler() warn: always true condition '(id >= 0) => (0-u32max >= 0)' Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-05media: am437x: fix smatch warningHans Verkuil1-1/+0
Fixes this warning: drivers/media/platform/am437x/am437x-vpfe.c:288 vpfe_ccdc_validate_param() warn: unsigned 'ccdcparam->alaw.gamma_wd' is never less than zero. by dropping the gamma_wd < VPFE_CCDC_GAMMA_BITS_15_6 check since VPFE_CCDC_GAMMA_BITS_15_6 is 0. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reviewed-by: Benoit Parrot <bparrot@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>