Takashi Iwai f1d91f0e9d fbdev: Fix invalid page access after closing deferred I/O devices ... commit 3efc61d952 upstream. When a fbdev with deferred I/O is once opened and closed, the dirty pages still remain queued in the pageref list, and eventually later those may be processed in the delayed work. This may lead to a corruption of pages, hitting an Oops. This patch makes sure to cancel the delayed work and clean up the pageref list at closing the device for addressing the bug. A part of the cleanup code is factored out as a new helper function that is called from the common fb_release(). Reviewed-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Tested-by: Miko Larsson <mikoxyzzz@gmail.com> Fixes: 56c134f7f1 ("fbdev: Track deferred-I/O pages in pageref struct") Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230129082856.22113-1-tiwai@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-02-22 12:59:46 +01:00
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acpi	ACPI: Fix selecting wrong ACPI fwnode for the iGPU on some Dell laptops	2023-01-18 11:58:11 +01:00
asm-generic	15 hotfixes. 11 marked cc:stable. Only three or four of the latter	2022-12-02 13:39:38 -08:00
clocksource
crypto
drm	drm/drm_vma_manager: Add drm_vma_node_allow_once()	2023-02-01 08:34:42 +01:00
dt-bindings	dt-bindings: clocks: imx8mp: Add ID for usb suspend clock	2022-12-31 13:33:09 +01:00
keys
kunit	kunit: fix kunit_test_init_section_suites(...)	2023-02-09 11:28:08 +01:00
kvm
linux	fbdev: Fix invalid page access after closing deferred I/O devices	2023-02-22 12:59:46 +01:00
math-emu
media	media: dvbdev: fix build warning due to comments	2022-12-31 13:33:12 +01:00
memory
misc
net	wifi: mac80211: Proper mark iTXQs for resumption	2023-02-01 08:34:35 +01:00
pcmcia
ras
rdma
rv
scsi	scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress	2023-02-09 11:28:12 +01:00
soc	ARM: at91: pm: avoid soft resetting AC DLL	2022-11-01 12:25:19 +02:00
sound	ALSA: hda/hdmi: fix stream-id config keep-alive for rt suspend	2022-12-31 13:33:07 +01:00
target
trace	tracing: Fix TASK_COMM_LEN in trace event format file	2023-02-14 19:11:54 +01:00
uapi	drm/virtio: exbuf->fence_fd unmodified on interrupted wait	2023-02-14 19:11:45 +01:00
ufs	scsi: ufs: core: Fix devfreq deadlocks	2023-02-01 08:34:39 +01:00
vdso
video
xen	xen/virtio: enable grant based virtio on x86	2022-10-10 14:31:26 +02:00