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| author | Pavel Begunkov <asml.silence@gmail.com> | 2022-06-01 15:28:44 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-06-01 10:12:41 -0600 |
| commit | 61c1b44a21d70d4783db02198fbf68b132f4953c (patch) | |
| tree | 6641f4cc04ffc4d1b6482f99880638f7e976577b /kernel/kcmp.c | |
| parent | a7c41b4687f5902af70cd559806990930c8a307b (diff) | |
| download | linux-stable-61c1b44a21d70d4783db02198fbf68b132f4953c.tar.gz linux-stable-61c1b44a21d70d4783db02198fbf68b132f4953c.tar.bz2 linux-stable-61c1b44a21d70d4783db02198fbf68b132f4953c.zip | |
io_uring: fix deadlock on iowq file slot alloc
io_fixed_fd_install() can grab uring_lock in the slot allocation path
when called from io-wq, and then call into io_install_fixed_file(),
which will lock it again. Pull all locking out of
io_install_fixed_file() into io_fixed_fd_install().
Fixes: 1339f24b336db ("io_uring: allow allocated fixed files for openat/openat2")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/64116172a9d0b85b85300346bb280f3657aafc26.1654087283.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'kernel/kcmp.c')
0 files changed, 0 insertions, 0 deletions