bugzilla-daemon at netfilter.org
2013-Jul-05 00:39 UTC
[Bug 831] New: oops in find_appropriate_src+219
https://bugzilla.netfilter.org/show_bug.cgi?id=831
Summary: oops in find_appropriate_src+219
Product: netfilter/iptables
Version: linux-2.6.x
Platform: x86_64
OS/Version: SuSE Linux
Status: NEW
Severity: major
Priority: P5
Component: NAT
AssignedTo: netfilter-buglog at lists.netfilter.org
ReportedBy: zhen_zhao at symantec.com
Estimated Hours: 0.0
When doing stress testing on sles11sp1(2.6.32.43). kernel panic due to NULL
pointer.
crash> bt
PID: 0 TASK: ffff881810db0080 CPU: 8 COMMAND: "swapper"
#0 [ffff88002c303740] machine_kexec at ffffffff81020902
#1 [ffff88002c303790] crash_kexec at ffffffff810874e0
#2 [ffff88002c303860] oops_end at ffffffff8139c350
#3 [ffff88002c303880] __bad_area_nosemaphore at ffffffff8102dd05
#4 [ffff88002c303940] page_fault at ffffffff8139b5cf [exception RIP:
find_appropriate_src+219]
RIP: ffffffffa1491a4b RSP: ffff88002c3039f0 RFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8817814beb90 RCX: 0000000024852261
RDX: 0000000000000000 RSI: 00000000327c4d71 RDI: ffffffff81cd4dc0
RBP: ffff88002c303ad0 R8: 0000000000000011 R9: 0000000000000002
R10: 0000000000004000 R11: ffffffffa14726e0 R12: ffff88002c303aa0
R13: ffff88002c303b40 R14: ffff88002c303b4c R15: ffff88002c303b4e
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
#5 [ffff88002c303a28] get_unique_tuple at ffffffffa1491beb [nf_nat]
#6 [ffff88002c303a58] nf_nat_setup_info at ffffffffa1491de9 [nf_nat]
#7 [ffff88002c303b38] alloc_null_binding at ffffffffa149e162 [iptable_nat]
#8 [ffff88002c303b78] nf_nat_fn at ffffffffa149e519 [iptable_nat]
#9 [ffff88002c303bb8] nf_iterate at ffffffff81318d18 #10 [ffff88002c303bf8]
nf_hook_slow at ffffffff81318db2
#11 [ffff88002c303c58] ip_local_deliver at ffffffff813214a1
#12 [ffff88002c303c78] ip_rcv_finish at ffffffff81320a59
#13 [ffff88002c303cb8] netif_receive_skb at ffffffff812f5f89
#14 [ffff88002c303d28] ixgbe_clean_rx_irq at ffffffffa0ea4837 [ixgbe]
#15 [ffff88002c303e28] ixgbe_clean_rxtx_many at ffffffffa0ea53e4 [ixgbe]
<<
Intel Network Card
#16 [ffff88002c303e98] net_rx_action at ffffffff812f6863
#17 [ffff88002c303ee8] __do_softirq at ffffffff810533ef
#18 [ffff88002c303f38] call_softirq at ffffffff810040bc
#19 [ffff88002c303f50] do_softirq at ffffffff81005cfd #20 [ffff88002c303f80]
do_IRQ at ffffffff8100525e
--- <IRQ stack> ---
#21 [ffff881810db3e88] ret_from_intr at ffffffff81003913 [exception RIP:
mwait_idle+98]
RIP: ffffffff8100ae42 RSP: ffff881810db3f30 RFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff81927700 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff881810db3fd8 RDI: ffffffff81a2e308
RBP: ffffffff8100390e R8: 0000000000000000 R9: 00000000ffffffff
R10: ffff88002c30fe18 R11: ffffffff8101a5d0 R12: 0025829d470ffa00
R13: 0000000000000082 R14: ffffffff81927b00 R15: 0000000100000008
ORIG_RAX: ffffffffffffff69 CS: 0010 SS: 0018
#22 [ffff881810db3f30] cpu_idle at ffffffff8100204a
crash>
>From the dump looked like ct was NULL during the call of
find_appropriate_src->same_src, which led to the panic.
same_src(const struct nf_conn *ct,const struct nf_conntrack_tuple *tuple) {
t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple; <<<<ct
was NULL }
0xffffffffa1491a44 <find_appropriate_src+212>: mov 0x20(%rbx),%rdx
0xffffffffa1491a48 <find_appropriate_src+216>: mov (%rbx),%rax
0xffffffffa1491a4b <find_appropriate_src+219>: cmp %r8b,0x3e(%rdx)
<<<panic because rdx was 0
Still need to understand how nat->ct was freed. Did not find any known issues
which can be related. Will raise a request to Novell while we continue with the
investigation.
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bugzilla-daemon at netfilter.org
2013-Jul-05 00:43 UTC
[Bug 831] oops in find_appropriate_src+219
https://bugzilla.netfilter.org/show_bug.cgi?id=831
zhaozhen <zhen_zhao at symantec.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|netfilter-buglog at lists.netf |pablo at netfilter.org
|ilter.org |
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bugzilla-daemon at netfilter.org
2013-Jul-05 04:07 UTC
[Bug 831] oops in find_appropriate_src+219
https://bugzilla.netfilter.org/show_bug.cgi?id=831
Dmitry Petuhov <d.petuhov at electro-com.ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |d.petuhov at electro-com.ru
--- Comment #1 from Dmitry Petuhov <d.petuhov at electro-com.ru>
2013-07-05 06:07:15 CEST ---
See bug 714, I think that's same issue. There's workaround.
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bugzilla-daemon at netfilter.org
2013-Jul-05 05:59 UTC
[Bug 831] oops in find_appropriate_src+219
https://bugzilla.netfilter.org/show_bug.cgi?id=831 --- Comment #2 from zhaozhen <zhen_zhao at symantec.com> 2013-07-05 07:59:17 CEST --- (In reply to comment #1)> See bug 714, I think that's same issue. There's workaround.Do you know the reason about this issue, in 714, there is no explation. thank you in advance. -- Configure bugmail: https://bugzilla.netfilter.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching all bug changes.
bugzilla-daemon at netfilter.org
2013-Jul-05 14:58 UTC
[Bug 831] oops in find_appropriate_src+219
https://bugzilla.netfilter.org/show_bug.cgi?id=831
Phil Oester <netfilter at linuxace.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |netfilter at linuxace.com
Resolution| |DUPLICATE
--- Comment #3 from Phil Oester <netfilter at linuxace.com> 2013-07-05
16:58:50 CEST ---
Please add additional comments to bug 714 - closing this one as duplicate.
*** This bug has been marked as a duplicate of bug 714 ***
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