drm/vmwgfx: Fix race issue calling pin_user_pages

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

Fixes: 7a7a933edd ("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

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Dawei Li 2022-11-09 23:37:34 +08:00 • committed by Zack Rusin

parent a6a00d7e8f

commit ed14d225cc

1 changed files with 3 additions and 3 deletions

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drivers/gpu/drm/vmwgfx/vmwgfx_msg.c

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