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| author | Jens Axboe <axboe@kernel.dk> | 2021-02-14 23:21:43 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-02-15 21:02:16 +0300 |
| commit | 0d4370cfe36b7f1719123b621a4ec4d9c7a25f89 (patch) | |
| tree | f00e02c1198c884a9eeda2af89a8c5966f86e854 /lib/fdt.c | |
| parent | 41be53e94fb04cc69fdf2f524c2a05d8069e047b (diff) | |
| download | linux-0d4370cfe36b7f1719123b621a4ec4d9c7a25f89.tar.xz | |
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: 8d4c3e76e3be ("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>
Diffstat (limited to 'lib/fdt.c')
0 files changed, 0 insertions, 0 deletions