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| author | Julian Wiedmann <jwi@linux.vnet.ibm.com> | 2017-08-15 17:02:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-15 10:58:39 -0700 |
| commit | 886e1974dcc5866cbc3d133d1f3d2cc26af68cfc (patch) | |
| tree | 0910a1aef5b8ae49d8f1db49c5aa2fca4d46f3a1 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | d396179c166932e51b3a65c4f766671ac4e48763 (diff) | |
s390/qeth: don't access skb after transmission
After transmitting a skb via send_packet[_fast](), the statistics
code accesses the skb once more to account for transmitted page frags.
This has a (theoretical?) race against the TX completion - if the TX
completion is processed and frees the skb before hard_start_xmit()
gets to the statistics part, we access random memory.
Fix this by caching the # of page frags, before the skb is transmitted.
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Acked-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions