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Alexander Usyskin
b0495bb58a
The read buffer allocation was changed from kmalloc() to kvmalloc().
This buffer is part of mei_cl_cb structure that can be queued in
rd_complete queue protected by spinlock.
Releasing the structure leads to errors like below when freeing buffer
that allocated non-contiguous:
BUG: sleeping function called from invalid context at mm/vmalloc.c:3448
Separate mei_cl_cb structure dequeue and release to
perform only dequeue under spinlock and push release out of spinlock.
Cc: stable <[email protected]>
Fixes: 4adf613e01 ("mei: use kvmalloc for read buffer")
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16359
Reviewed-by: Menachem Adin <[email protected]>
Signed-off-by: Alexander Usyskin <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>