proc: don't allow async path resolution of /proc/thread-self components
commit 0d4370cf upstream. 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:Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
parent
b7cd9711
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