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Commit 0d4370cf authored by Jens Axboe's avatar Jens Axboe
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proc: don't allow async path resolution of /proc/thread-self components



If this is attempted by an io-wq kthread, then return -EOPNOTSUPP as we
don't currently support that. Once we can get task_pid_ptr() doing the
right thing, then this can go away again.

Use PF_IO_WORKER for this to speciically target the io_uring workers.
Modify the /proc/self/ check to use PF_IO_WORKER as well.

Cc: stable@vger.kernel.org
Fixes: 8d4c3e76 ("proc: don't allow async path resolution of /proc/self components")
Reported-by: default avatarEric W. Biederman <ebiederm@xmission.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 41be53e9
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