target/linux/generic/patches-2.6.38/010-l2tp_fix_oops_backport.patch

   1 commit 8aa525a9340da4227797a06221ca08399006635f
   2 Author: James Chapman <jchapman@katalix.com>
   3 Date:   Mon Mar 21 18:10:25 2011 -0700
   4
   5     l2tp: fix possible oops on l2tp_eth module unload
   6
   7     A struct used in the l2tp_eth driver for registering network namespace
   8     ops was incorrectly marked as __net_initdata, leading to oops when
   9     module unloaded.
  10
  11     BUG: unable to handle kernel paging request at ffffffffa00ec098
  12     IP: [<ffffffff8123dbd8>] ops_exit_list+0x7/0x4b
  13     PGD 142d067 PUD 1431063 PMD 195da8067 PTE 0
  14     Oops: 0000 [#1] SMP
  15     last sysfs file: /sys/module/l2tp_eth/refcnt
  16     Call Trace:
  17      [<ffffffff8123dc94>] ? unregister_pernet_operations+0x32/0x93
  18      [<ffffffff8123dd20>] ? unregister_pernet_device+0x2b/0x38
  19      [<ffffffff81068b6e>] ? sys_delete_module+0x1b8/0x222
  20      [<ffffffff810c7300>] ? do_munmap+0x254/0x318
  21      [<ffffffff812c64e5>] ? page_fault+0x25/0x30
  22      [<ffffffff812c6952>] ? system_call_fastpath+0x16/0x1b
  23
  24     Signed-off-by: James Chapman <jchapman@katalix.com>
  25     Signed-off-by: David S. Miller <davem@davemloft.net>
  26
  27 --- a/net/l2tp/l2tp_eth.c
  28 +++ b/net/l2tp/l2tp_eth.c
  29 @@ -283,7 +283,7 @@ static __net_init int l2tp_eth_init_net(
  30         return 0;
  31  }
  32
  33 -static __net_initdata struct pernet_operations l2tp_eth_net_ops = {
  34 +static struct pernet_operations l2tp_eth_net_ops = {
  35         .init = l2tp_eth_init_net,
  36         .id   = &l2tp_eth_net_id,
  37         .size = sizeof(struct l2tp_eth_net),