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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2008-12-17 16:08:01 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2008-12-17 16:08:01 -0800 |
| commit | a693722aec4ce26fb46c21cf4bf4422484a397a7 (patch) | |
| tree | 003b408f7473bbc9804e185f850cf6f6017e7f1d /net/sctp/ipv6.c | |
| parent | Phonet: USB CDC Phonet function for gadget framework (diff) | |
| download | linux-dev-a693722aec4ce26fb46c21cf4bf4422484a397a7.tar.xz linux-dev-a693722aec4ce26fb46c21cf4bf4422484a397a7.zip | |
dccp_diag: LISTEN sockets don't have CCIDs
And thus when we try to use 'ss -danemi' on these sockets that have no
ccid blocks (data collected using systemtap after I fixed the problem):
dccp_diag_get_info sk=0xffff8801220a3100, dp->dccps_hc_rx_ccid=0x0000000000000000, dp->dccps_hc_tx_ccid=0x0000000000000000
We get an OOPS:
mica.ghostprotocols.net login: BUG: unable to handle kernel NULL pointer
dereferenc0
IP: [<ffffffffa0136082>] dccp_diag_get_info+0x82/0xc0 [dccp_diag]
PGD 12106f067 PUD 122488067 PMD 0
Oops: 0000 [#1] PREEMPT
Fix is trivial, and 'ss -d' is working again:
[root@mica ~]# ss -danemi
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 0 *:5001 *:*
ino:7288 sk:220a3100ffff8801
mem:(r0,w0,f0,t0) cwnd:0 ssthresh:0
[root@mica ~]#
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/ipv6.c')
0 files changed, 0 insertions, 0 deletions