On 04/21/2015 07:09 PM, Eric Dumazet wrote:

Note that this patch adds a deadlock possibility in some stress
situations.

If a process owning some tcp socket dies, and tcp_mem[2] is already hit,
all sk_stream_alloc_skb() can return NULL and we loop in tcp_send_fin(),
making no progress because we can not free any tcp memory.

Ugh. Thanks for fixing this Eric!

Josh
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