From: Mattia Dongili <malattia@gmail.com>
To: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: BUG: atomic counter underflow at ip_conntrack_event_cache_init+0x91/0xb0 (with patch)
Date: Mon, 1 Aug 2005 16:13:27 +0200 [thread overview]
Message-ID: <20050801141327.GA3909@inferi.kami.home> (raw)
Hello,
got this one while trying out 2.6.13-rc4-mm1 (not there in -r2-mm1),
from a quick look it seems to me that ip_conntrack_{get,put} are not
simmetric in updating the use count, thus simply adding this line might
help (it does actually, but I'm not aware if there could be any drawback):
--- include/linux/netfilter_ipv4/ip_conntrack.h.clean 2005-08-01 15:09:49.000000000 +0200
+++ include/linux/netfilter_ipv4/ip_conntrack.h 2005-08-01 15:08:52.000000000 +0200
@@ -298,6 +298,7 @@ static inline struct ip_conntrack *
ip_conntrack_get(const struct sk_buff *skb, enum ip_conntrack_info *ctinfo)
{
*ctinfo = skb->nfctinfo;
+ nf_conntrack_get(skb->nfct);
return (struct ip_conntrack *)skb->nfct;
}
here's the BUG log:
Aug 1 10:44:01 inferi kernel: BUG: atomic counter underflow at:
Aug 1 10:44:01 inferi kernel: [pg0+277500810/1069777920] ip_ct_iterate_cleanup+0xfa/0x100 [ip_conntrack]
Aug 1 10:44:01 inferi kernel: [pg0+277541331/1069777920] masq_inet_event+0x33/0x40 [ipt_MASQUERADE]
Aug 1 10:44:01 inferi kernel: [pg0+277541344/1069777920] device_cmp+0x0/0x40 [ipt_MASQUERADE]
Aug 1 10:44:01 inferi kernel: [notifier_call_chain+45/80] notifier_call_chain+0x2d/0x50
Aug 1 10:44:01 inferi kernel: [inet_del_ifa+147/464] inet_del_ifa+0x93/0x1d0
Aug 1 10:44:01 inferi kernel: [devinet_ioctl+1199/1440] devinet_ioctl+0x4af/0x5a0
Aug 1 10:44:01 inferi kernel: [inet_ioctl+102/176] inet_ioctl+0x66/0xb0
Aug 1 10:44:01 inferi kernel: [sock_ioctl+201/560] sock_ioctl+0xc9/0x230
Aug 1 10:44:01 inferi kernel: [do_ioctl+142/160] do_ioctl+0x8e/0xa0
Aug 1 10:44:01 inferi kernel: [do_page_fault+392/1555] do_page_fault+0x188/0x613
Aug 1 10:44:01 inferi kernel: [vfs_ioctl+101/496] vfs_ioctl+0x65/0x1f0
Aug 1 10:44:01 inferi kernel: [sys_ioctl+69/112] sys_ioctl+0x45/0x70
Aug 1 10:44:01 inferi kernel: [syscall_call+7/11] syscall_call+0x7/0xb
Aug 1 10:45:06 inferi kernel: BUG: atomic counter underflow at:
Aug 1 10:45:06 inferi kernel: [pg0+277491553/1069777920] ip_conntrack_event_cache_init+0x91/0xb0 [ip_conntrack]
Aug 1 10:45:06 inferi kernel: [pg0+277496567/1069777920] ip_conntrack_in+0xd7/0x2f0 [ip_conntrack]
Aug 1 10:45:06 inferi kernel: [ip_rcv_finish+0/768] ip_rcv_finish+0x0/0x300
Aug 1 10:45:06 inferi kernel: [nf_iterate+120/144] nf_iterate+0x78/0x90
Aug 1 10:45:06 inferi kernel: [ip_rcv_finish+0/768] ip_rcv_finish+0x0/0x300
Aug 1 10:45:06 inferi kernel: [ip_rcv_finish+0/768] ip_rcv_finish+0x0/0x300
Aug 1 10:45:06 inferi kernel: [nf_hook_slow+126/336] nf_hook_slow+0x7e/0x150
Aug 1 10:45:06 inferi kernel: [ip_rcv_finish+0/768] ip_rcv_finish+0x0/0x300
Aug 1 10:45:06 inferi kernel: [ip_rcv_finish+0/768] ip_rcv_finish+0x0/0x300
Aug 1 10:45:06 inferi kernel: [ip_rcv+1186/1424] ip_rcv+0x4a2/0x590
Aug 1 10:45:06 inferi kernel: [ip_rcv_finish+0/768] ip_rcv_finish+0x0/0x300
Aug 1 10:45:06 inferi kernel: [acpi_ut_value_exit+53/63] acpi_ut_value_exit+0x35/0x3f
Aug 1 10:45:06 inferi kernel: [netif_receive_skb+359/544] netif_receive_skb+0x167/0x220
Aug 1 10:45:06 inferi kernel: [pg0+277353520/1069777920] e100_poll+0x750/0x800 [e100]
Aug 1 10:45:06 inferi kernel: [net_rx_action+116/288] net_rx_action+0x74/0x120
Aug 1 10:45:06 inferi kernel: [__do_softirq+123/144] __do_softirq+0x7b/0x90
Aug 1 10:45:06 inferi kernel: [do_softirq+38/48] do_softirq+0x26/0x30
Aug 1 10:45:06 inferi kernel: [irq_exit+53/64] irq_exit+0x35/0x40
Aug 1 10:45:06 inferi kernel: [do_IRQ+30/48] do_IRQ+0x1e/0x30
Aug 1 10:45:06 inferi kernel: [common_interrupt+26/32] common_interrupt+0x1a/0x20
Aug 1 10:45:06 inferi kernel: [acpi_processor_idle+290/661] acpi_processor_idle+0x122/0x295
Aug 1 10:45:06 inferi kernel: [cpu_idle+80/96] cpu_idle+0x50/0x60
Aug 1 10:45:06 inferi kernel: [start_kernel+346/384] start_kernel+0x15a/0x180
Aug 1 10:45:06 inferi kernel: [unknown_bootoption+0/480] unknown_bootoption+0x0/0x1e0
Aug 1 10:46:05 inferi kernel: BUG: atomic counter underflow at:
Aug 1 10:46:05 inferi kernel: [pg0+277491553/1069777920] ip_conntrack_event_cache_init+0x91/0xb0 [ip_conntrack]
Aug 1 10:46:05 inferi kernel: [pg0+277496567/1069777920] ip_conntrack_in+0xd7/0x2f0 [ip_conntrack]
Aug 1 10:46:05 inferi kernel: [dst_output+0/48] dst_output+0x0/0x30
Aug 1 10:46:05 inferi kernel: [nf_iterate+120/144] nf_iterate+0x78/0x90
Aug 1 10:46:05 inferi kernel: [dst_output+0/48] dst_output+0x0/0x30
Aug 1 10:46:05 inferi kernel: [dst_output+0/48] dst_output+0x0/0x30
Aug 1 10:46:05 inferi kernel: [nf_hook_slow+126/336] nf_hook_slow+0x7e/0x150
Aug 1 10:46:05 inferi kernel: [dst_output+0/48] dst_output+0x0/0x30
Aug 1 10:46:05 inferi kernel: [dst_output+0/48] dst_output+0x0/0x30
Aug 1 10:46:05 inferi kernel: [ip_push_pending_frames+1059/1168] ip_push_pending_frames+0x423/0x490
Aug 1 10:46:05 inferi kernel: [dst_output+0/48] dst_output+0x0/0x30
Aug 1 10:46:05 inferi kernel: [udp_push_pending_frames+364/688] udp_push_pending_frames+0x16c/0x2b0
Aug 1 10:46:05 inferi kernel: [udp_sendmsg+946/1840] udp_sendmsg+0x3b2/0x730
Aug 1 10:46:05 inferi kernel: [do_no_page+104/848] do_no_page+0x68/0x350
Aug 1 10:46:05 inferi kernel: [handle_mm_fault+252/592] handle_mm_fault+0xfc/0x250
Aug 1 10:46:05 inferi kernel: [dput_recursive+30/768] dput_recursive+0x1e/0x300
Aug 1 10:46:05 inferi kernel: [do_lookup+80/176] do_lookup+0x50/0xb0
Aug 1 10:46:05 inferi kernel: [__do_page_cache_readahead+125/368] __do_page_cache_readahead+0x7d/0x170
Aug 1 10:46:05 inferi kernel: [inet_sendmsg+77/96] inet_sendmsg+0x4d/0x60
Aug 1 10:46:05 inferi kernel: [sock_sendmsg+221/256] sock_sendmsg+0xdd/0x100
Aug 1 10:46:05 inferi kernel: [do_generic_mapping_read+814/1520] do_generic_mapping_read+0x32e/0x5f0
Aug 1 10:46:05 inferi kernel: [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60
Aug 1 10:46:05 inferi kernel: [sys_sendto+220/256] sys_sendto+0xdc/0x100
Aug 1 10:46:05 inferi kernel: [sys_connect+143/176] sys_connect+0x8f/0xb0
Aug 1 10:46:05 inferi kernel: [handle_mm_fault+252/592] handle_mm_fault+0xfc/0x250
Aug 1 10:46:05 inferi kernel: [sys_send+51/64] sys_send+0x33/0x40
Aug 1 10:46:05 inferi kernel: [sys_socketcall+323/608] sys_socketcall+0x143/0x260
Aug 1 10:46:05 inferi kernel: [do_page_fault+0/1555] do_page_fault+0x0/0x613
Aug 1 10:46:05 inferi kernel: [syscall_call+7/11] syscall_call+0x7/0xb
The BUG is repeated every minute, the full log is available at
http://oioio.altervista.org/kern.log
Attached my .config and below my very simple iptables rules:
Chain INPUT (policy DROP 254 packets, 10012 bytes)
pkts bytes target prot opt in out source destination
2567 1117K ACCEPT all -- lo any anywhere anywhere
5955 6519K ACCEPT all -- any any anywhere anywhere state RELATED,ESTABLISHED
0 0 ACCEPT tcp -- any any anywhere anywhere tcp dpt:ssh
Chain FORWARD (policy DROP 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 6549 packets, 1405K bytes)
pkts bytes target prot opt in out source destination
Chain PREROUTING (policy ACCEPT 256 packets, 10868 bytes)
pkts bytes target prot opt in out source destination
Chain POSTROUTING (policy ACCEPT 44 packets, 3319 bytes)
pkts bytes target prot opt in out source destination
95 7375 MASQUERADE all -- any eth0 anywhere anywhere
Chain OUTPUT (policy ACCEPT 139 packets, 10694 bytes)
pkts bytes target prot opt in out source destination
--
mattia
:wq!
next reply other threads:[~2005-08-01 14:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-01 14:13 Mattia Dongili [this message]
2005-08-01 14:27 ` Patrick McHardy
2005-08-01 16:05 ` Mattia Dongili
2005-08-01 17:08 ` Patrick McHardy
2005-08-02 0:47 ` Patrick McHardy
2005-08-02 10:44 ` Mattia Dongili
2005-08-02 13:29 ` Mattia Dongili
2005-08-03 18:34 ` Patrick McHardy
2005-08-05 9:06 ` David S. Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050801141327.GA3909@inferi.kami.home \
--to=malattia@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®