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| /optee_os/core/mm/ |
| H A D | mobj_dyn_shm.c | 7c04952c760bb2a1200b3c7048773d2a774cfbc4 Tue Oct 29 06:25:14 UTC 2024 Jens Wiklander <jens.wiklander@linaro.org> core: fix race in mobj_reg_shm_get_by_cookie()
Until this patch in mobj_reg_shm_get_by_cookie() there's a small window
after cpu_spin_unlock_xrestore() before the reference counter is
increased with mobj_get(). Fix that by calling mobj_get() before
unlocking reg_shm_slist_lock.
Fixes: b96514926b8e ("core: reference count struct mobj")
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>
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