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.compilersAttachment:
signature.asc
Description: This is a digitally signed message part