blktrace: reject buf_size smaller than blk_io_trace2#792
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blk_trace_setup() accepts any non-zero buf_size from userspace and passes it directly to relay_open(). If buf_size is smaller than sizeof(struct blk_io_trace2), relay_reserve() always returns NULL and all trace events are silently dropped. Reject such values early with -EINVAL. Signed-off-by: Deepanshu Kartikey <Kartikey406@gmail.com>
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Pull request for series with
subject: blktrace: reject buf_size smaller than blk_io_trace2
version: 2
url: https://patchwork.kernel.org/project/linux-block/list/?series=1088908