Revision 721c8dafad26ccfa90ff659ee19755e3377b829d authored by Guillaume Nault on 06 December 2019, 11:38:49 UTC, committed by David S. Miller on 07 December 2019, 05:05:14 UTC
Syncookies borrow the ->rx_opt.ts_recent_stamp field to store the
timestamp of the last synflood. Protect them with READ_ONCE() and
WRITE_ONCE() since reads and writes aren't serialised.
Use of .rx_opt.ts_recent_stamp for storing the synflood timestamp was
introduced by a0f82f64e269 ("syncookies: remove last_synq_overflow from
struct tcp_sock"). But unprotected accesses were already there when
timestamp was stored in .last_synq_overflow.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent cb44a08
.get_maintainer.ignore
Christoph Hellwig <hch@lst.de>
Marc Gonzalez <marc.w.gonzalez@free.fr>
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