ptr_ring: fail early if queue occupies more than KMALLOC_MAX_SIZE

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To avoid slab to warn about exceeded size, fail early if queue
occupies more than KMALLOC_MAX_SIZE.

Reported-by: syzbot+e4d4f9ddd4295539735d@syzkaller.appspotmail.com
Fixes: 2e0ab8ca83 ("ptr_ring: array based FIFO for pointers")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Wang 2018-02-09 17:45:49 +08:00 • committed by David S. Miller

parent 909ebd5840

commit 6e6e41c311

1 changed files with 2 additions and 0 deletions

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include/linux/ptr_ring.h

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