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nbd: clamp the timeout before converting it to jiffies #1149

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nbd: clamp the timeout before converting it to jiffies #1149

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4 changes: 4 additions & 0 deletions drivers/block/nbd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1619,6 +1619,10 @@ static void nbd_clear_sock_ioctl(struct nbd_device *nbd)

static void nbd_set_cmd_timeout(struct nbd_device *nbd, u64 timeout)
{
/* clamp so that timeout * HZ fits in an unsigned int */
if (timeout > UINT_MAX / HZ)
timeout = UINT_MAX / HZ;

nbd->tag_set.timeout = timeout * HZ;
if (timeout)
blk_queue_rq_timeout(nbd->disk->queue, timeout * HZ);
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