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| author | Xiaoguang Wang <[email protected]> | 2020-05-05 08:28:53 +0000 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2020-05-05 19:18:11 +0000 |
| commit | 7f13657d141346125f4d0bb93eab4777f40c406e (patch) | |
| tree | ee786539b1ab574f47c0f9dd9c406a36176cc6c8 /tools/perf/scripts/python/netdev-times.py | |
| parent | io_uring: fix mismatched finish_wait() calls in io_uring_cancel_files() (diff) | |
| download | kernel-7f13657d141346125f4d0bb93eab4777f40c406e.tar.gz kernel-7f13657d141346125f4d0bb93eab4777f40c406e.zip | |
io_uring: handle -EFAULT properly in io_uring_setup()
If copy_to_user() in io_uring_setup() failed, we'll leak many kernel
resources, which will be recycled until process terminates. This bug
can be reproduced by using mprotect to set params to PROT_READ. To fix
this issue, refactor io_uring_create() a bit to add a new 'struct
io_uring_params __user *params' parameter and move the copy_to_user()
in io_uring_setup() to io_uring_setup(), if copy_to_user() failed,
we can free kernel resource properly.
Suggested-by: Jens Axboe <[email protected]>
Signed-off-by: Xiaoguang Wang <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions