Bug with kube-proxy

[zorel]

Hello.

All the tasks succeed, but in dmesg, as seen in https://github.com/hypriot/image-builder-rpi/issues/166 .

I know it's not specific to ansible scripts however. Is it worth trying with a 3.16 kernel?

[ 1334.159754] ------------[ cut here ]------------
[ 1334.164707] WARNING: CPU: 1 PID: 3942 at kernel/sched/core.c:2966 preempt_count_add+0xfc/0x118()
[ 1334.174007] DEBUG_LOCKS_WARN_ON((preempt_count() & PREEMPT_MASK) >= PREEMPT_MASK - 10)
[ 1334.182183] Modules linked in:
[ 1334.185466]  xt_comment xt_mark ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables xt_conntrack x_tables nf_nat nf_conntrack br_netfilter bridge stp llc bnep hci_uart btbcm bluetooth dm_thin_pool dm_bio_prison dm_persistent_data dm_bufio dm_mod brcmfmac brcmutil cfg80211 rfkill snd_bcm2835 snd_pcm snd_timer snd bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio overlay ipv6
[ 1334.226879] CPU: 1 PID: 3942 Comm: kube-proxy Not tainted 4.4.50-hypriotos-v7+ #1
[ 1334.234710] Hardware name: BCM2709
[ 1334.238323] [<80019468>] (unwind_backtrace) from [<80014a14>] (show_stack+0x20/0x24)
[ 1334.246453] [<80014a14>] (show_stack) from [<803362dc>] (dump_stack+0xbc/0x108)
[ 1334.254147] [<803362dc>] (dump_stack) from [<8002672c>] (warn_slowpath_common+0x8c/0xc8)
[ 1334.262638] [<8002672c>] (warn_slowpath_common) from [<800267a8>] (warn_slowpath_fmt+0x40/0x48)
[ 1334.271759] [<800267a8>] (warn_slowpath_fmt) from [<8005005c>] (preempt_count_add+0xfc/0x118)
[ 1334.280698] [<8005005c>] (preempt_count_add) from [<805bf608>] (_raw_spin_lock+0x20/0x60)
[ 1334.289314] [<805bf608>] (_raw_spin_lock) from [<7f3cd45c>] (nf_conntrack_set_hashsize+0xa4/0x200 [nf_conntrack])
[ 1334.391752] [<7f3cd45c>] (nf_conntrack_set_hashsize [nf_conntrack]) from [<80043530>] (param_attr_store+0x6c/0xc4)
[ 1334.491015] [<80043530>] (param_attr_store) from [<80042864>] (module_attr_store+0x30/0x3c)
[ 1334.588651] [<80042864>] (module_attr_store) from [<801dfd1c>] (sysfs_kf_write+0x54/0x58)
[ 1334.685822] [<801dfd1c>] (sysfs_kf_write) from [<801df4f4>] (kernfs_fop_write+0xc8/0x1c8)
[ 1334.783030] [<801df4f4>] (kernfs_fop_write) from [<8016ad94>] (__vfs_write+0x34/0xe8)
[ 1334.879753] [<8016ad94>] (__vfs_write) from [<8016b658>] (vfs_write+0xa0/0x1a8)
[ 1334.976101] [<8016b658>] (vfs_write) from [<8016bf78>] (SyS_write+0x4c/0xa0)
[ 1335.027879] [<8016bf78>] (SyS_write) from [<8000fc40>] (ret_fast_syscall+0x0/0x1c)
[ 1335.124128] ---[ end trace 41b89ceb5c5e0202 ]---
[ 1335.176234] BUG: scheduling while atomic: kube-proxy/3942/0x00000401
[ 1335.226418] Modules linked in: xt_nat xt_recent ipt_REJECT nf_reject_ipv4 xt_tcpudp xt_comment xt_mark ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables xt_conntrack x_tables nf_nat nf_conntrack br_netfilter bridge stp llc bnep hci_uart btbcm bluetooth dm_thin_pool dm_bio_prison dm_persistent_data dm_bufio dm_mod brcmfmac brcmutil cfg80211 rfkill snd_bcm2835 snd_pcm snd_timer snd bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio overlay ipv6
[ 1335.587102] Preemption disabled at:[<  (null)>]   (null)

[ 1335.679506] CPU: 1 PID: 3942 Comm: kube-proxy Tainted: G        W       4.4.50-hypriotos-v7+ #1
[ 1335.772295] Hardware name: BCM2709
[ 1335.816601] [<80019468>] (unwind_backtrace) from [<80014a14>] (show_stack+0x20/0x24)
[ 1335.906485] [<80014a14>] (show_stack) from [<803362dc>] (dump_stack+0xbc/0x108)
[ 1335.995536] [<803362dc>] (dump_stack) from [<8010c4d4>] (__schedule_bug+0xac/0xd0)
[ 1336.085542] [<8010c4d4>] (__schedule_bug) from [<805bbc60>] (__schedule+0x6a0/0x750)
[ 1336.176499] [<805bbc60>] (__schedule) from [<805bbf1c>] (schedule+0x58/0xb8)
[ 1336.225211] [<805bbf1c>] (schedule) from [<80014210>] (do_work_pending+0x3c/0xd4)
[ 1336.315047] [<80014210>] (do_work_pending) from [<8000fc68>] (slow_work_pending+0xc/0x20)
HypriotOS/armv7: root@master01 in ~