dlt_user: race data happens between threads #588
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The current implementation of signaling mechanism with binary semaphore is used to lock the libdlt ring buffer. However, this cannot perform a correct locking. While libdlt ring buffer is being freed by atexit_handler thread, logging still happens in other threads dereferencing NULL pointers. This fix replaces the current binary semaphore with a mutex lock, folowing the locking mechanism. Signed-off-by: LUU QUANG MINH <[email protected]>
michael-methner
approved these changes
Jan 30, 2024
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The current implementation of signaling mechanism
with binary semaphore is used to lock the libdlt ring buffer.
However, this cannot perform a correct locking.
While libdlt ring buffer is being freed by atexit_handler thread,
logging still happens in other threads dereferencing NULL pointers.
This fix replaces the current binary semaphore with a mutex lock,
folowing the locking mechanism.