* Re: Bug#806130: linux: netlink_sock_destruct() crash in netns [not found] <144838019931.22302.9425487048881510008.reportbug@deathstar.cica.es> @ 2015-11-26 22:14 ` Ben Hutchings 2015-11-28 22:47 ` Pablo Neira Ayuso 0 siblings, 1 reply; 3+ messages in thread From: Ben Hutchings @ 2015-11-26 22:14 UTC (permalink / raw) To: Arturo Borrero Gonzalez; +Cc: 806130, netfilter-devel [-- Attachment #1: Type: text/plain, Size: 2594 bytes --] On Tue, 2015-11-24 at 16:49 +0100, Arturo Borrero Gonzalez wrote: > Source: linux > Version: 4.2.6-1 > Severity: normal > > Dear Maintainer, > > thanks for your work in the linux kernel. > > I'm experimenting reports like this: > > [mar nov 24 16:38:16 2015] ------------[ cut here ]------------ > [mar nov 24 16:38:16 2015] WARNING: CPU: 1 PID: 22224 at /build/linux-CrHvZ_/linux-4.2.6/net/netlink/af_netlink.c:946 netlink_sock_destruct+0x103/0x140() > [mar nov 24 16:38:16 2015] Modules linked in: nft_nat nft_chain_nat_ipv4 nf_nat_ipv4 nf_nat nft_log fuse uas usb_storage nft_counter nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nft_ct nf_conntrack nft_meta nft_hash nft_rbtree nfnetlink_log nf_tables_inet nf_tables_ipv6 nf_tables_ipv4 nf_tables nfnetlink nouveau snd_hda_codec_idt snd_hda_codec_generic mxm_wmi wmi video ttm drm_kms_helper drm iTCO_wdt i2c_algo_bit iTCO_vendor_support coretemp kvm_intel lpc_ich kvm snd_hda_intel mfd_core i2c_i801 snd_hda_codec evdev snd_hda_core pcspkr psmouse serio_raw snd_hwdep snd_pcm sg rng_core tpm_tis tpm 8250_fintek shpchp button snd_timer snd soundcore acpi_cpufreq processor thermal_sys parport_pc ppdev lp parport autofs4 ext4 crc16 mbcache jbd2 dm_mod sr_mod cdrom sd_mod ata_generic floppy ata_piix e100 > [mar nov 24 16:38:16 2015] mii libata scsi_mod ehci_pci uhci_hcd ehci_hcd usbcore usb_common > [mar nov 24 16:38:16 2015] CPU: 1 PID: 22224 Comm: bash Tainted: G W 4.2.0-1-amd64 #1 Debian 4.2.6-1 [...] > I can reproduce the issue: > > % sudo ip netns add test > % sudo ip netns exec test nft -f test.nft > % sudo ip netns del test > > Find attached the test.nft file. I can also reproduce this warning with Linux 4.3. I was also able to simplify your sample quite a lot and still reproduce it: --- BEGIN --- flush ruleset table ip nat { chain postrouting { ip saddr 192.168.5.0/24 snat 1.1.1.1 } } table inet inet-filter { chain input { ct state new accept } chain forward { type filter hook forward priority 0; policy drop; ip saddr {1.1.1.1, 2.2.2.2} ip daddr {2.3.4.5, 2.3.4.6} tcp dport 22 counter accept ip saddr {1.1.1.1, 2.2.2.2} ip daddr {2.3.4.5, 2.3.4.6} tcp dport 22 counter accept ip saddr {1.1.1.1, 2.2.2.2} ip daddr {2.3.4.5, 2.3.4.6} tcp dport 22 counter accept counter accept } } --- END --- I'm cc'ing this to the netfilter developers so they can investigate this. Ben. -- Ben Hutchings Unix is many things to many people, but it's never been everything to anybody. [-- Attachment #2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 811 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Bug#806130: linux: netlink_sock_destruct() crash in netns 2015-11-26 22:14 ` Bug#806130: linux: netlink_sock_destruct() crash in netns Ben Hutchings @ 2015-11-28 22:47 ` Pablo Neira Ayuso 2015-12-01 23:25 ` Ben Hutchings 0 siblings, 1 reply; 3+ messages in thread From: Pablo Neira Ayuso @ 2015-11-28 22:47 UTC (permalink / raw) To: Ben Hutchings; +Cc: Arturo Borrero Gonzalez, 806130, netfilter-devel On Thu, Nov 26, 2015 at 10:14:58PM +0000, Ben Hutchings wrote: > On Tue, 2015-11-24 at 16:49 +0100, Arturo Borrero Gonzalez wrote: > > Source: linux > > Version: 4.2.6-1 > > Severity: normal > > > > Dear Maintainer, > > > > thanks for your work in the linux kernel. > > > > I'm experimenting reports like this: > > > > [mar nov 24 16:38:16 2015] ------------[ cut here ]------------ > > [mar nov 24 16:38:16 2015] WARNING: CPU: 1 PID: 22224 at /build/linux-CrHvZ_/linux-4.2.6/net/netlink/af_netlink.c:946 netlink_sock_destruct+0x103/0x140() > > [mar nov 24 16:38:16 2015] Modules linked in: nft_nat nft_chain_nat_ipv4 nf_nat_ipv4 nf_nat nft_log fuse uas usb_storage nft_counter nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nft_ct nf_conntrack nft_meta nft_hash nft_rbtree nfnetlink_log nf_tables_inet nf_tables_ipv6 nf_tables_ipv4 nf_tables nfnetlink nouveau snd_hda_codec_idt snd_hda_codec_generic mxm_wmi wmi video ttm drm_kms_helper drm iTCO_wdt i2c_algo_bit iTCO_vendor_support coretemp kvm_intel lpc_ich kvm snd_hda_intel mfd_core i2c_i801 snd_hda_codec evdev snd_hda_core pcspkr psmouse serio_raw snd_hwdep snd_pcm sg rng_core tpm_tis tpm 8250_fintek shpchp button snd_timer snd soundcore acpi_cpufreq processor thermal_sys parport_pc ppdev lp parport autofs4 ext4 crc16 mbcache jbd2 dm_mod sr_mod cdrom sd_mod ata_generic floppy ata_piix e100 > > [mar nov 24 16:38:16 2015] mii libata scsi_mod ehci_pci uhci_hcd ehci_hcd usbcore usb_common > > [mar nov 24 16:38:16 2015] CPU: 1 PID: 22224 Comm: bash Tainted: G W 4.2.0-1-amd64 #1 Debian 4.2.6-1 > [...] > > I can reproduce the issue: > > > > % sudo ip netns add test > > % sudo ip netns exec test nft -f test.nft > > % sudo ip netns del test > > > > Find attached the test.nft file. sk Eth Pid Groups Rmem Wmem Dump Locks Drops Inode ffff8800cbb11000 0 0 00000000 0 0 0 2 0 19855 ffff88011504f800 4 0 00000000 0 0 0 2 0 19877 ffff8801153f7000 9 0 00000000 0 0 0 2 0 19876 ffff880030c23000 10 0 00000000 0 0 0 2 0 19858 ffff8800cbabb800 12 0 00000000 -4544 0 0 2 0 19890 wmem is underflowing. Could you check if this also happening in older kernel versions? No need to test under netns, you can just run nft -f and check /proc/net/netlink. Let me know, thanks. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Bug#806130: linux: netlink_sock_destruct() crash in netns 2015-11-28 22:47 ` Pablo Neira Ayuso @ 2015-12-01 23:25 ` Ben Hutchings 0 siblings, 0 replies; 3+ messages in thread From: Ben Hutchings @ 2015-12-01 23:25 UTC (permalink / raw) To: Pablo Neira Ayuso; +Cc: Arturo Borrero Gonzalez, 806130, netfilter-devel [-- Attachment #1: Type: text/plain, Size: 3104 bytes --] On Sat, 2015-11-28 at 23:47 +0100, Pablo Neira Ayuso wrote: > On Thu, Nov 26, 2015 at 10:14:58PM +0000, Ben Hutchings wrote: > > On Tue, 2015-11-24 at 16:49 +0100, Arturo Borrero Gonzalez wrote: > > > Source: linux > > > Version: 4.2.6-1 > > > Severity: normal > > > > > > Dear Maintainer, > > > > > > thanks for your work in the linux kernel. > > > > > > I'm experimenting reports like this: > > > > > > [mar nov 24 16:38:16 2015] ------------[ cut here ]------------ > > > [mar nov 24 16:38:16 2015] WARNING: CPU: 1 PID: 22224 at /build/linux-CrHvZ_/linux-4.2.6/net/netlink/af_netlink.c:946 netlink_sock_destruct+0x103/0x140() > > > [mar nov 24 16:38:16 2015] Modules linked in: nft_nat nft_chain_nat_ipv4 nf_nat_ipv4 nf_nat nft_log fuse uas usb_storage nft_counter nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nft_ct nf_conntrack nft_meta nft_hash nft_rbtree nfnetlink_log nf_tables_inet nf_tables_ipv6 nf_tables_ipv4 nf_tables nfnetlink nouveau snd_hda_codec_idt snd_hda_codec_generic mxm_wmi wmi video ttm drm_kms_helper drm iTCO_wdt i2c_algo_bit iTCO_vendor_support coretemp kvm_intel lpc_ich kvm snd_hda_intel mfd_core i2c_i801 snd_hda_codec evdev snd_hda_core pcspkr psmouse serio_raw snd_hwdep snd_pcm sg rng_core tpm_tis tpm 8250_fintek shpchp button snd_timer snd soundcore acpi_cpufreq processor thermal_sys parport_pc ppdev lp parport autofs4 ext4 crc16 mbcache jbd2 dm_mod sr_mod cdrom sd_mod ata_generic floppy ata_piix e100 > > > [mar nov 24 16:38:16 2015] mii libata scsi_mod ehci_pci uhci_hcd ehci_hcd usbcore usb_common > > > [mar nov 24 16:38:16 2015] CPU: 1 PID: 22224 Comm: bash Tainted: G W 4.2.0-1-amd64 #1 Debian 4.2.6-1 > > [...] > > > I can reproduce the issue: > > > > > > % sudo ip netns add test > > > % sudo ip netns exec test nft -f test.nft > > > % sudo ip netns del test > > > > > > Find attached the test.nft file. > > sk Eth Pid Groups Rmem Wmem Dump Locks > Drops Inode > ffff8800cbb11000 0 0 00000000 0 0 0 2 0 19855 > ffff88011504f800 4 0 00000000 0 0 0 2 0 19877 > ffff8801153f7000 9 0 00000000 0 0 0 2 0 19876 > ffff880030c23000 10 0 00000000 0 0 0 2 0 19858 > ffff8800cbabb800 12 0 00000000 -4544 0 0 2 0 19890 > > wmem is underflowing. > > Could you check if this also happening in older kernel versions? Same happens on 3.18. The current version of nft doesn't run on 3.17 or earlier. Ben. > No need to test under netns, you can just run nft -f and check > /proc/net/netlink. > > Let me know, thanks. -- Ben Hutchings Theory and practice are closer in theory than in practice. - John Levine, moderator of comp.compilers [-- Attachment #2: This is a digitally signed message part --] [-- Type: application/pgp-signature, Size: 811 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] <144838019931.22302.9425487048881510008.reportbug@deathstar.cica.es>
2015-11-26 22:14 ` Bug#806130: linux: netlink_sock_destruct() crash in netns Ben Hutchings
2015-11-28 22:47 ` Pablo Neira Ayuso
2015-12-01 23:25 ` Ben Hutchings
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