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Pablo Neira Ayuso 6bd0405bb4 netfilter: nf_ct_ecache: fix crash with multiple containers, one shutting down 
Hans reports that he's still hitting:

BUG: unable to handle kernel NULL pointer dereference at 000000000000027c
IP: [<ffffffff813615db>] netlink_has_listeners+0xb/0x60
PGD 0
Oops: 0000 [#3] PREEMPT SMP
CPU 0

It happens when adding a number of containers with do:

nfct_query(h, NFCT_Q_CREATE, ct);

and most likely one namespace shuts down.

this problem was supposed to be fixed by:
70e9942 netfilter: nf_conntrack: make event callback registration per-netns

Still, it was missing one rcu_access_pointer to check if the callback
is set or not.

Reported-by: Hans Schillstrom <hans@schillstrom.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
 		2012-07-09 10:53:19 +02:00
..
acpi ACPI: fix acpi_bus.h build warnings when ACPI is not enabled 2012-06-04 00:29:11 -04:00
asm-generic bug.h: Fix up CONFIG_BUG=n implicit function declarations. 2012-06-25 10:32:49 -07:00
crypto
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drm drm: drop comment about this header being autogenerated. 2012-06-22 11:04:55 +01:00
keys KEYS: Permit in-place link replacement in keyring list 2012-05-11 10:56:56 +01:00
linux Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2012-07-03 15:45:10 -07:00
math-emu
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media [media] patch for Asus My Cinema PS3-100 (1043:48cd) 2012-05-20 16:05:02 -03:00
memory
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misc
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mtd UBI: amend commentaries WRT dtype 2012-05-20 20:25:59 +03:00
net netfilter: nf_ct_ecache: fix crash with multiple containers, one shutting down 2012-07-09 10:53:19 +02:00
pcmcia
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rdma Merge branches 'core', 'cxgb4', 'ipath', 'iser', 'lockdep', 'mlx4', 'nes', 'ocrdma', 'qib' and 'raw-qp' into for-linus 2012-05-21 09:00:47 -07:00
rxrpc
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scsi SCSI & usb-storage: add try_rc_10_first flag 2012-06-22 22:05:31 -07:00
sound Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2012-06-25 14:53:09 -07:00
target target: Add TFO->put_session() caller for HW fabric session shutdown 2012-06-12 19:33:05 -07:00
trace rcu: Update RCU_FAST_NO_HZ tracing for lazy callbacks 2012-06-06 20:43:27 -07:00
video fbdev updates for 3.5 2012-06-01 16:57:51 -07:00
xen xen: do not map the same GSI twice in PVHVM guests. 2012-05-21 14:11:36 -04:00
Kbuild
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