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| author | Dave Watson <davejwatson@fb.com> | 2018-05-01 13:05:39 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-05-01 18:57:52 -0400 |
| commit | c212d2c7fc4736d49be102fb7a1a545cdc2f1fea (patch) | |
| tree | f4ebbd4af00a32f8f96ea2d92498c533d33da615 /mm/page_vma_mapped.c | |
| parent | edd7ceb78296fb1574958991b6655c3c2cedf124 (diff) | |
| download | linux-c212d2c7fc4736d49be102fb7a1a545cdc2f1fea.tar.bz2 | |
net/tls: Don't recursively call push_record during tls_write_space callbacks
It is reported that in some cases, write_space may be called in
do_tcp_sendpages, such that we recursively invoke do_tcp_sendpages again:
[ 660.468802] ? do_tcp_sendpages+0x8d/0x580
[ 660.468826] ? tls_push_sg+0x74/0x130 [tls]
[ 660.468852] ? tls_push_record+0x24a/0x390 [tls]
[ 660.468880] ? tls_write_space+0x6a/0x80 [tls]
...
tls_push_sg already does a loop over all sending sg's, so ignore
any tls_write_space notifications until we are done sending.
We then have to call the previous write_space to wake up
poll() waiters after we are done with the send loop.
Reported-by: Andre Tomt <andre@tomt.net>
Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/page_vma_mapped.c')
0 files changed, 0 insertions, 0 deletions