io_uring: fix potential crash issue due to io_get_req failure

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Sometimes io_get_req will return a NUL, then we need to do the
correct error handling, otherwise it will cause the kernel null
pointer exception.

Fixes: 4fe2c96315 ("io_uring: add support for link with drain")
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jackie Liu 2019-09-18 17:25:52 +08:00 • committed by Jens Axboe

parent 6cc47d1d2a

commit a1041c27b6

1 changed files with 6 additions and 0 deletions

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fs/io_uring.c

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