| commit | 36493e838ff016f2cd54353e81e9213d95c5022f | |
| author | Steven J. Magnani <steve@digidescorp.com> | |
| Tue, 30 Mar 2010 20:56:01 +0000 (30 13:56 -0700) | ||
| committer | Willy Tarreau <w@1wt.eu> | |
| Sat, 30 Apr 2011 14:53:40 +0000 (30 16:53 +0200) | ||
| tree | c5952e1e0f329dd45170de6fc086a3867b9af174 | treesnapshot (tar.gz zip) |
| parent | 2c7e4c4f58501ac1adc9ddcabda04be7849a60ff | commitdiff |
net: Fix oops from tcp_collapse() when using splice()
commit baff42ab1494528907bf4d5870359e31711746ae upstream.
tcp_read_sock() can have a eat skbs without immediately advancing copied_seq.
This can cause a panic in tcp_collapse() if it is called as a result
of the recv_actor dropping the socket lock.
A userspace program that splices data from a socket to either another
socket or to a file can trigger this bug.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
commit baff42ab1494528907bf4d5870359e31711746ae upstream.
tcp_read_sock() can have a eat skbs without immediately advancing copied_seq.
This can cause a panic in tcp_collapse() if it is called as a result
of the recv_actor dropping the socket lock.
A userspace program that splices data from a socket to either another
socket or to a file can trigger this bug.
Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| net/ipv4/tcp.c | diffblobblamehistory |