io_uring: fix potential use after free on fallback request free

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After __io_free_req() puts a ctx ref, it should be assumed that the ctx
may already be gone. However, it can be accessed when putting the
fallback req. Free the req first and then put the ctx.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Pavel Begunkov 2020-06-29 13:13:03 +03:00 • committed by Jens Axboe

parent 8eb7e2d007

commit ecfc517774

1 changed files with 5 additions and 2 deletions

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fs/io_uring.c

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