Messages in this thread Patch in this message | | | From | Liam Howlett <> | Subject | [PATCH v2 12/22] net/ipv5/tcp: Use vma_lookup() in tcp_zerocopy_receive() | Date | Fri, 21 May 2021 17:48:03 +0000 |
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Use vma_lookup() to find the VMA at a specific address. As vma_lookup() will return NULL if the address is not within any VMA, the start address no longer needs to be validated.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Laurent Dufour <ldufour@linux.ibm.com> Acked-by: David Hildenbrand <david@redhat.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> --- net/ipv4/tcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index e14fd0c50c10..d4781a514012 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2094,8 +2094,8 @@ static int tcp_zerocopy_receive(struct sock *sk, mmap_read_lock(current->mm); - vma = find_vma(current->mm, address); - if (!vma || vma->vm_start > address || vma->vm_ops != &tcp_vm_ops) { + vma = vma_lookup(current->mm, address); + if (!vma || vma->vm_ops != &tcp_vm_ops) { mmap_read_unlock(current->mm); return -EINVAL; } -- 2.30.2
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