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Kyumin Lee
bc0e8faf90
Per-task restrictions apply to all rings created by a task. Once
installed, they should not be dropped across exec.
For a task that has used io_uring, the exec cancellation path calls
__io_uring_free(). This frees both the task context and the per-task
restriction, so a ring created after exec is unrestricted.
Split task context cleanup into io_uring_free_tctx(), and use it from
the exec cancellation path. Keep __io_uring_free() for final task
cleanup, where both the context and restriction are released.
Fixes: ed82f35b92 ("io_uring: allow registration of per-task restrictions")
Cc: [email protected] # 7.1+
Signed-off-by: Kyumin Lee <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jens Axboe <[email protected]>