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(parent: ef42bc7) | patch
drm/vmwgfx: Fix race issue calling pin_user_pages
authorDawei Li <set_pte_at@outlook.com>
Wed, 9 Nov 2022 15:37:34 +0000 (23:37 +0800)
committerZack Rusin <zackr@vmware.com>
Mon, 28 Nov 2022 19:13:34 +0000 (14:13 -0500)
commitb27755616d82f5d81a8cfdd7f281bca1afd24fe9
treea9ddc073df9bc6d31184536421895b1d8221199btree | snapshot
parentef42bc71d95c9f6736204e87a6a01bbe64c6c504commit | diff
drm/vmwgfx: Fix race issue calling pin_user_pages

pin_user_pages() is unsafe without protection of mmap_lock,
fix it by calling pin_user_pages_fast().

Fixes: 8c59b342b0b3 ("drm/vmwgfx: Introduce VMware mks-guest-stats")
Signed-off-by: Dawei Li <set_pte_at@outlook.com>
Reviewed-by: Martin Krastev <krastevm@vmware.com>
Signed-off-by: Zack Rusin <zackr@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/TYWP286MB23193621CB443E1E1959A00BCA3E9@TYWP286MB2319.JPNP286.PROD.OUTLOOK.COM
drivers/gpu/drm/vmwgfx/vmwgfx_msg.c diff | blob | history
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