Re: [PATCH] io_uring/rsrc: fix null ptr dereference in io_sqe_buffer_register

[Jens Axboe]

On 11/3/24 8:51 PM, Daniel Yang wrote:
> The call stack io_sqe_buffer_register -> io_buffer_account_pin ->
> headpage_already_acct results in a null ptr dereference in the for loop.
> There is no guarantee that ctx->buf_table.nodes[i] is an allocated node
> so add a check if null before dereferencing.

Assuming this is an older tree, it's fixed in the current tree.

-- 
Jens Axboe