On Tue, 7 May 2024 21:01:06 +0200
Salvatore Bonaccorso <car...@debian.org> wrote:

> Control: tags -1 + moreinfo
> 
> Hi Tito,
> 
> On Tue, May 07, 2024 at 10:19:44AM +0200, Tito Ragusa wrote:
> > Package: src:linux
> > Version: 6.1.90-1
> > Severity: normal
> > 
> > Dear Maintainer,
> > 
> >    * What led up to the situation?
> > 
> >    Rebooting the box after kernel package upgrade
> > 
> >    * What exactly did you do (or not do) that was effective (or
> >      ineffective)?
> >    
> >    Nothing
> > 
> >    * What was the outcome of this action?
> >  
> >    Nothing 
> > 
> >    * What outcome did you expect instead?
> > 
> >    Rebooting without traces in the logs
> >  
> > -- Package-specific info:
> > ** Version:
> > Linux version 6.1.0-21-amd64 (debian-ker...@lists.debian.org) (gcc-12 
> > (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP 
> > PREEMPT_DYNAMIC Debian 6.1.90-1 (2024-05-03)
> > 
> > ** Command line:
> > BOOT_IMAGE=/vmlinuz-6.1.0-21-amd64 
> > root=UUID=a75e6ad5-37fc-4f69-9361-f94d6c0e5d2f ro net.ifnames=0 apparmor=0 
> > selinux=0 noresume consoleblank=0 console=tty1
> > 
> > ** Tainted: WOE (12800)
> >  * kernel issued warning
> >  * externally-built ("out-of-tree") module was loaded
> >  * unsigned module was loaded
> > 
> > ** Kernel log:
> >   May  7 08:10:12 cerberus kernel: [   76.203881] ------------[ cut here 
> > ]------------
> > May  7 08:10:12 cerberus kernel: [   76.203895] WARNING: CPU: 3 PID: 0 at 
> > net/bridge/br_netfilter_hooks.c:622 br_nf_local_in+0x1a9/0x1d0 
> > [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.203911] Modules linked in: ctr ccm 
> > nf_tables xt_nat xt_recent xt_geoip(OE) xt_NFQUEUE xt_mark xt_CT xt_tcpudp 
> > xt_helper nf_nat_ftp nf_conntrack_ftp ip6table_raw ip6table_mangle 
> > ip6table_nat xt_MASQUERADE iptable_nat nf_nat xt_TCPMSS xt_LOG 
> > nf_log_syslog ipt_REJECT nf_reject_ipv4 iptable_raw iptable_mangle 
> > xt_multiport xt_state xt_limit xt_conntrack nf_conntrack nf_defrag_ipv6 
> > nf_defrag_ipv4 libcrc32c ip6table_filter ip6_tables iptable_filter 
> > ip_tables x_tables ovpn_dco_v2(OE) ip6_udp_tunnel udp_tunnel tcp_bbr 
> > nct6775 nct6775_core hwmon_vid br_netfilter bridge stp llc nfnetlink_queue 
> > nfnetlink i915 ppdev intel_rapl_msr evdev intel_rapl_common 
> > x86_pkg_temp_thermal intel_powerclamp drm_buddy coretemp video rt2800usb 
> > wmi ghash_clmulni_intel drm_display_helper rt2x00usb sha512_ssse3 
> > sha512_generic rt2800lib rt2x00lib cec sha256_ssse3 sha1_ssse3 rc_core 
> > mac80211 aesni_intel ttm crypto_simd drm_kms_helper libarc4 cryptd cfg80211 
> > rapl intel_cstate 
 drm intel_uncore rfkill parport_pc pcspkr
> > May  7 08:10:12 cerberus kernel: [   76.203999]  serio_raw iTCO_wdt 
> > intel_pmc_bxt iTCO_vendor_support parport watchdog at24 button ext4 crc16 
> > mbcache jbd2 crc32c_generic sg sd_mod t10_pi crc64_rocksoft crc64 
> > crc_t10dif crct10dif_generic ahci libahci libata crct10dif_pclmul 
> > crct10dif_common crc32_pclmul crc32c_intel psmouse scsi_mod i2c_i801 
> > i2c_smbus ehci_pci ehci_hcd scsi_common lpc_ich usbcore igb i2c_algo_bit 
> > usb_common dca
> > May  7 08:10:12 cerberus kernel: [   76.204039] CPU: 3 PID: 0 Comm: 
> > swapper/3 Tainted: G           OE      6.1.0-21-amd64 #1  Debian 6.1.90-1
> > May  7 08:10:12 cerberus kernel: [   76.204044] Hardware name: Sophos 
> > UTM/To be filled by O.E.M., BIOS 4.6.4 11/08/2011
> > May  7 08:10:12 cerberus kernel: [   76.204046] RIP: 
> > 0010:br_nf_local_in+0x1a9/0x1d0 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204056] Code: df e8 4b b7 cd fa 66 
> > 83 ab b8 00 00 00 08 eb 94 be 04 00 00 00 48 89 df e8 34 b7 cd fa 66 83 ab 
> > b8 00 00 00 04 e9 7a ff ff ff <0f> 0b e9 f0 fe ff ff 0f 0b e9 dd fe ff ff 
> > 48 89 ef e8 41 67 d8 fa
> > May  7 08:10:12 cerberus kernel: [   76.204059] RSP: 0018:ffffbf5600144928 
> > EFLAGS: 00010202
> > May  7 08:10:12 cerberus kernel: [   76.204062] RAX: 0000000000000002 RBX: 
> > ffff9ac2862ff300 RCX: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204065] RDX: ffffbf5600144980 RSI: 
> > ffff9ac2862ff300 RDI: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204067] RBP: ffff9ac2848a8100 R08: 
> > 0000000000000001 R09: ffff9ac2872be980
> > May  7 08:10:12 cerberus kernel: [   76.204070] R10: ffff9ac2872be000 R11: 
> > 0000000000000002 R12: ffffbf5600144980
> > May  7 08:10:12 cerberus kernel: [   76.204072] R13: 0000000000000000 R14: 
> > ffff9ac282f4bac0 R15: ffff9ac2d027da00
> > May  7 08:10:12 cerberus kernel: [   76.204074] FS:  0000000000000000(0000) 
> > GS:ffff9ac5b0180000(0000) knlGS:0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204077] CS:  0010 DS: 0000 ES: 0000 
> > CR0: 0000000080050033
> > May  7 08:10:12 cerberus kernel: [   76.204080] CR2: 00005618751eb018 CR3: 
> > 000000002e610006 CR4: 00000000000606e0
> > May  7 08:10:12 cerberus kernel: [   76.204083] Call Trace:
> > May  7 08:10:12 cerberus kernel: [   76.204087]  <IRQ>
> > May  7 08:10:12 cerberus kernel: [   76.204090]  ? __warn+0x7d/0xc0
> > May  7 08:10:12 cerberus kernel: [   76.204097]  ? 
> > br_nf_local_in+0x1a9/0x1d0 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204105]  ? report_bug+0xe2/0x150
> > May  7 08:10:12 cerberus kernel: [   76.204113]  ? handle_bug+0x41/0x70
> > May  7 08:10:12 cerberus kernel: [   76.204118]  ? exc_invalid_op+0x13/0x60
> > May  7 08:10:12 cerberus kernel: [   76.204122]  ? 
> > asm_exc_invalid_op+0x16/0x20
> > May  7 08:10:12 cerberus kernel: [   76.204128]  ? 
> > br_nf_local_in+0x1a9/0x1d0 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204137]  nf_hook_slow+0x41/0xc0
> > May  7 08:10:12 cerberus kernel: [   76.204143]  
> > br_pass_frame_up+0x15d/0x1e0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204168]  ? 
> > br_port_flags_change+0x80/0x80 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204190]  
> > br_handle_frame_finish+0x409/0x5b0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204213]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204234]  
> > br_nf_hook_thresh+0xec/0x100 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204243]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204264]  
> > br_nf_pre_routing_finish+0x184/0x470 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204272]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204294]  ? 
> > nf_nat_ipv4_pre_routing+0x45/0xb0 [nf_nat]
> > May  7 08:10:12 cerberus kernel: [   76.204306]  
> > br_nf_pre_routing+0x477/0x580 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204315]  ? 
> > br_nf_hook_thresh+0x100/0x100 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204323]  
> > br_handle_frame+0x233/0x3c0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204345]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204366]  ? 
> > br_handle_frame_finish+0x5b0/0x5b0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204387]  
> > __netif_receive_skb_core.constprop.0+0x263/0xef0
> > May  7 08:10:12 cerberus kernel: [   76.204394]  
> > __netif_receive_skb_list_core+0x13a/0x2c0
> > May  7 08:10:12 cerberus kernel: [   76.204400]  
> > netif_receive_skb_list_internal+0x1cd/0x300
> > May  7 08:10:12 cerberus kernel: [   76.204405]  ? 
> > dev_gro_receive+0x3b1/0x730
> > May  7 08:10:12 cerberus kernel: [   76.204409]  
> > napi_complete_done+0x6d/0x1a0
> > May  7 08:10:12 cerberus kernel: [   76.204415]  igb_poll+0x883/0x1440 [igb]
> > May  7 08:10:12 cerberus kernel: [   76.204435]  ? 
> > enqueue_task_fair+0x87/0x3d0
> > May  7 08:10:12 cerberus kernel: [   76.204440]  __napi_poll+0x2b/0x160
> > May  7 08:10:12 cerberus kernel: [   76.204445]  net_rx_action+0x29e/0x350
> > May  7 08:10:12 cerberus kernel: [   76.204451]  __do_softirq+0xc6/0x2ab
> > May  7 08:10:12 cerberus kernel: [   76.204456]  ? 
> > handle_edge_irq+0x87/0x220
> > May  7 08:10:12 cerberus kernel: [   76.204462]  __irq_exit_rcu+0xaa/0xe0
> > May  7 08:10:12 cerberus kernel: [   76.204467]  common_interrupt+0x82/0xa0
> > May  7 08:10:12 cerberus kernel: [   76.204472]  </IRQ>
> > May  7 08:10:12 cerberus kernel: [   76.204473]  <TASK>
> > May  7 08:10:12 cerberus kernel: [   76.204475]  
> > asm_common_interrupt+0x22/0x40
> > May  7 08:10:12 cerberus kernel: [   76.204479] RIP: 
> > 0010:cpuidle_enter_state+0xde/0x420
> > May  7 08:10:12 cerberus kernel: [   76.204483] Code: 00 00 31 ff e8 b3 24 
> > 97 ff 45 84 ff 74 16 9c 58 0f 1f 40 00 f6 c4 02 0f 85 25 03 00 00 31 ff e8 
> > 88 cf 9d ff fb 0f 1f 44 00 00 <45> 85 f6 0f 88 85 01 00 00 49 63 d6 48 8d 
> > 04 52 48 8d 04 82 49 8d
> > May  7 08:10:12 cerberus kernel: [   76.204486] RSP: 0018:ffffbf56000b7e90 
> > EFLAGS: 00000246
> > May  7 08:10:12 cerberus kernel: [   76.204489] RAX: ffff9ac5b01b1a40 RBX: 
> > ffff9ac5b01bbf00 RCX: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204491] RDX: 0000000000000003 RSI: 
> > fffffffc174edff4 RDI: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204493] RBP: 0000000000000004 R08: 
> > 0000000000000004 R09: 0000000029625589
> > May  7 08:10:12 cerberus kernel: [   76.204495] R10: 0000000000000018 R11: 
> > 00000000000026d1 R12: ffffffffbcb9ef20
> > May  7 08:10:12 cerberus kernel: [   76.204498] R13: 00000011be19dc43 R14: 
> > 0000000000000004 R15: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204503]  cpuidle_enter+0x29/0x40
> > May  7 08:10:12 cerberus kernel: [   76.204506]  do_idle+0x202/0x2a0
> > May  7 08:10:12 cerberus kernel: [   76.204512]  cpu_startup_entry+0x26/0x30
> > May  7 08:10:12 cerberus kernel: [   76.204517]  start_secondary+0x12a/0x150
> > May  7 08:10:12 cerberus kernel: [   76.204523]  
> > secondary_startup_64_no_verify+0xe5/0xeb
> > May  7 08:10:12 cerberus kernel: [   76.204531]  </TASK>
> > May  7 08:10:12 cerberus kernel: [   76.204532] ---[ end trace 
> > 0000000000000000 ]---
> > May  7 08:10:12 cerberus kernel: [   76.204548] ------------[ cut here 
> > ]------------
> > May  7 08:10:12 cerberus kernel: [   76.204549] WARNING: CPU: 3 PID: 0 at 
> > net/netfilter/nf_conntrack_core.c:1210 __nf_conntrack_confirm+0x58e/0x670 
> > [nf_conntrack]
> > May  7 08:10:12 cerberus kernel: [   76.204572] Modules linked in: ctr ccm 
> > nf_tables xt_nat xt_recent xt_geoip(OE) xt_NFQUEUE xt_mark xt_CT xt_tcpudp 
> > xt_helper nf_nat_ftp nf_conntrack_ftp ip6table_raw ip6table_mangle 
> > ip6table_nat xt_MASQUERADE iptable_nat nf_nat xt_TCPMSS xt_LOG 
> > nf_log_syslog ipt_REJECT nf_reject_ipv4 iptable_raw iptable_mangle 
> > xt_multiport xt_state xt_limit xt_conntrack nf_conntrack nf_defrag_ipv6 
> > nf_defrag_ipv4 libcrc32c ip6table_filter ip6_tables iptable_filter 
> > ip_tables x_tables ovpn_dco_v2(OE) ip6_udp_tunnel udp_tunnel tcp_bbr 
> > nct6775 nct6775_core hwmon_vid br_netfilter bridge stp llc nfnetlink_queue 
> > nfnetlink i915 ppdev intel_rapl_msr evdev intel_rapl_common 
> > x86_pkg_temp_thermal intel_powerclamp drm_buddy coretemp video rt2800usb 
> > wmi ghash_clmulni_intel drm_display_helper rt2x00usb sha512_ssse3 
> > sha512_generic rt2800lib rt2x00lib cec sha256_ssse3 sha1_ssse3 rc_core 
> > mac80211 aesni_intel ttm crypto_simd drm_kms_helper libarc4 cryptd cfg80211 
> > rapl intel_cstate 
 drm intel_uncore rfkill parport_pc pcspkr
> > May  7 08:10:12 cerberus kernel: [   76.204649]  serio_raw iTCO_wdt 
> > intel_pmc_bxt iTCO_vendor_support parport watchdog at24 button ext4 crc16 
> > mbcache jbd2 crc32c_generic sg sd_mod t10_pi crc64_rocksoft crc64 
> > crc_t10dif crct10dif_generic ahci libahci libata crct10dif_pclmul 
> > crct10dif_common crc32_pclmul crc32c_intel psmouse scsi_mod i2c_i801 
> > i2c_smbus ehci_pci ehci_hcd scsi_common lpc_ich usbcore igb i2c_algo_bit 
> > usb_common dca
> > May  7 08:10:12 cerberus kernel: [   76.204684] CPU: 3 PID: 0 Comm: 
> > swapper/3 Tainted: G        W  OE      6.1.0-21-amd64 #1  Debian 6.1.90-1
> > May  7 08:10:12 cerberus kernel: [   76.204687] Hardware name: Sophos 
> > UTM/To be filled by O.E.M., BIOS 4.6.4 11/08/2011
> > May  7 08:10:12 cerberus kernel: [   76.204689] RIP: 
> > 0010:__nf_conntrack_confirm+0x58e/0x670 [nf_conntrack]
> > May  7 08:10:12 cerberus kernel: [   76.204708] Code: 04 84 c0 74 1b 8b 57 
> > 0c 48 01 f8 85 d2 0f 85 ae 00 00 00 48 85 c0 74 08 0f b6 db f0 48 0f ab 18 
> > bb 01 00 00 00 e9 b9 fb ff ff <0f> 0b 48 89 d7 e8 b8 85 ed fa 8b 44 24 10 
> > 41 39 c7 75 4c be 00 02
> > May  7 08:10:12 cerberus kernel: [   76.204710] RSP: 0018:ffffbf56001448b8 
> > EFLAGS: 00010202
> > May  7 08:10:12 cerberus kernel: [   76.204713] RAX: 0000000000000188 RBX: 
> > 000000000002132e RCX: ffff9ac2862ff300
> > May  7 08:10:12 cerberus kernel: [   76.204716] RDX: ffffffffc0b85cb8 RSI: 
> > 0000000000000010 RDI: ffffffffc0b85cb8
> > May  7 08:10:12 cerberus kernel: [   76.204718] RBP: 0000000000017010 R08: 
> > ffffbf5600144880 R09: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204720] R10: d01fd11969c5c8b7 R11: 
> > 77e4d90f021967d4 R12: 0000000000017010
> > May  7 08:10:12 cerberus kernel: [   76.204722] R13: 000000000002132e R14: 
> > ffff9ac2848a8100 R15: 000000000000032e
> > May  7 08:10:12 cerberus kernel: [   76.204725] FS:  0000000000000000(0000) 
> > GS:ffff9ac5b0180000(0000) knlGS:0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.204727] CS:  0010 DS: 0000 ES: 0000 
> > CR0: 0000000080050033
> > May  7 08:10:12 cerberus kernel: [   76.204730] CR2: 00005618751eb018 CR3: 
> > 000000002e610006 CR4: 00000000000606e0
> > May  7 08:10:12 cerberus kernel: [   76.204732] Call Trace:
> > May  7 08:10:12 cerberus kernel: [   76.204734]  <IRQ>
> > May  7 08:10:12 cerberus kernel: [   76.204736]  ? __warn+0x7d/0xc0
> > May  7 08:10:12 cerberus kernel: [   76.204739]  ? 
> > __nf_conntrack_confirm+0x58e/0x670 [nf_conntrack]
> > May  7 08:10:12 cerberus kernel: [   76.204758]  ? report_bug+0xe2/0x150
> > May  7 08:10:12 cerberus kernel: [   76.204764]  ? handle_bug+0x41/0x70
> > May  7 08:10:12 cerberus kernel: [   76.204768]  ? exc_invalid_op+0x13/0x60
> > May  7 08:10:12 cerberus kernel: [   76.204772]  ? 
> > asm_exc_invalid_op+0x16/0x20
> > May  7 08:10:12 cerberus kernel: [   76.204777]  ? 
> > __nf_conntrack_confirm+0x58e/0x670 [nf_conntrack]
> > May  7 08:10:12 cerberus kernel: [   76.204795]  ? 
> > __nf_conntrack_confirm+0xb0/0x670 [nf_conntrack]
> > May  7 08:10:12 cerberus kernel: [   76.204815]  br_nf_local_in+0xf4/0x1d0 
> > [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204824]  nf_hook_slow+0x41/0xc0
> > May  7 08:10:12 cerberus kernel: [   76.204828]  
> > br_pass_frame_up+0x15d/0x1e0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204850]  ? 
> > br_port_flags_change+0x80/0x80 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204872]  
> > br_handle_frame_finish+0x409/0x5b0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204894]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204915]  
> > br_nf_hook_thresh+0xec/0x100 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204923]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204944]  
> > br_nf_pre_routing_finish+0x184/0x470 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204952]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.204974]  ? 
> > nf_nat_ipv4_pre_routing+0x45/0xb0 [nf_nat]
> > May  7 08:10:12 cerberus kernel: [   76.204985]  
> > br_nf_pre_routing+0x477/0x580 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.204994]  ? 
> > br_nf_hook_thresh+0x100/0x100 [br_netfilter]
> > May  7 08:10:12 cerberus kernel: [   76.205002]  
> > br_handle_frame+0x233/0x3c0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.205023]  ? 
> > br_handle_local_finish+0x20/0x20 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.205044]  ? 
> > br_handle_frame_finish+0x5b0/0x5b0 [bridge]
> > May  7 08:10:12 cerberus kernel: [   76.205065]  
> > __netif_receive_skb_core.constprop.0+0x263/0xef0
> > May  7 08:10:12 cerberus kernel: [   76.205071]  
> > __netif_receive_skb_list_core+0x13a/0x2c0
> > May  7 08:10:12 cerberus kernel: [   76.205077]  
> > netif_receive_skb_list_internal+0x1cd/0x300
> > May  7 08:10:12 cerberus kernel: [   76.205081]  ? 
> > dev_gro_receive+0x3b1/0x730
> > May  7 08:10:12 cerberus kernel: [   76.205086]  
> > napi_complete_done+0x6d/0x1a0
> > May  7 08:10:12 cerberus kernel: [   76.205090]  igb_poll+0x883/0x1440 [igb]
> > May  7 08:10:12 cerberus kernel: [   76.205110]  ? 
> > enqueue_task_fair+0x87/0x3d0
> > May  7 08:10:12 cerberus kernel: [   76.205114]  __napi_poll+0x2b/0x160
> > May  7 08:10:12 cerberus kernel: [   76.205119]  net_rx_action+0x29e/0x350
> > May  7 08:10:12 cerberus kernel: [   76.205124]  __do_softirq+0xc6/0x2ab
> > May  7 08:10:12 cerberus kernel: [   76.205129]  ? 
> > handle_edge_irq+0x87/0x220
> > May  7 08:10:12 cerberus kernel: [   76.205134]  __irq_exit_rcu+0xaa/0xe0
> > May  7 08:10:12 cerberus kernel: [   76.205139]  common_interrupt+0x82/0xa0
> > May  7 08:10:12 cerberus kernel: [   76.205143]  </IRQ>
> > May  7 08:10:12 cerberus kernel: [   76.205145]  <TASK>
> > May  7 08:10:12 cerberus kernel: [   76.205146]  
> > asm_common_interrupt+0x22/0x40
> > May  7 08:10:12 cerberus kernel: [   76.205150] RIP: 
> > 0010:cpuidle_enter_state+0xde/0x420
> > May  7 08:10:12 cerberus kernel: [   76.205153] Code: 00 00 31 ff e8 b3 24 
> > 97 ff 45 84 ff 74 16 9c 58 0f 1f 40 00 f6 c4 02 0f 85 25 03 00 00 31 ff e8 
> > 88 cf 9d ff fb 0f 1f 44 00 00 <45> 85 f6 0f 88 85 01 00 00 49 63 d6 48 8d 
> > 04 52 48 8d 04 82 49 8d
> > May  7 08:10:12 cerberus kernel: [   76.205156] RSP: 0018:ffffbf56000b7e90 
> > EFLAGS: 00000246
> > May  7 08:10:12 cerberus kernel: [   76.205159] RAX: ffff9ac5b01b1a40 RBX: 
> > ffff9ac5b01bbf00 RCX: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.205161] RDX: 0000000000000003 RSI: 
> > fffffffc174edff4 RDI: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.205163] RBP: 0000000000000004 R08: 
> > 0000000000000004 R09: 0000000029625589
> > May  7 08:10:12 cerberus kernel: [   76.205165] R10: 0000000000000018 R11: 
> > 00000000000026d1 R12: ffffffffbcb9ef20
> > May  7 08:10:12 cerberus kernel: [   76.205167] R13: 00000011be19dc43 R14: 
> > 0000000000000004 R15: 0000000000000000
> > May  7 08:10:12 cerberus kernel: [   76.205172]  cpuidle_enter+0x29/0x40
> > May  7 08:10:12 cerberus kernel: [   76.205175]  do_idle+0x202/0x2a0
> > May  7 08:10:12 cerberus kernel: [   76.205181]  cpu_startup_entry+0x26/0x30
> > May  7 08:10:12 cerberus kernel: [   76.205185]  start_secondary+0x12a/0x150
> > May  7 08:10:12 cerberus kernel: [   76.205190]  
> > secondary_startup_64_no_verify+0xe5/0xeb
> > May  7 08:10:12 cerberus kernel: [   76.205197]  </TASK>
> > May  7 08:10:12 cerberus kernel: [   76.205198] ---[ end trace 
> > 0000000000000000 ]---
> 
> You seem to have loaded a OOT module. Does the issue happens as well
> without ovpn_dco_v2 ? And if so are you able to reliably reproduce it?
> 
> Regards,
> Salvatore

Hi,
by searching through the logs it seems to happen reliably at shutdown (1 time) 
or after
rebooting  (4 times) the machine:

grep -r  "cut here" /var/log/
/var/log/messages:Apr 13 21:19:28 cerberus kernel: [   74.032684] ------------[ 
cut here ]------------
/var/log/messages:May  4 08:03:36 cerberus kernel: [1766697.846830] 
------------[ cut here ]------------
/var/log/messages:May  4 08:05:15 cerberus kernel: [   74.881436] ------------[ 
cut here ]------------
/var/log/messages:May  7 08:10:12 cerberus kernel: [   76.203881] ------------[ 
cut here ]------------
/var/log/messages:May  7 08:10:12 cerberus kernel: [   76.204548] ------------[ 
cut here ]------------

after: 

May  7 21:37:49 cerberus kernel: [   58.392874] br0: port 7(wlan0) entered 
learning state
May  7 21:38:05 cerberus kernel: [   73.495898] br0: port 7(wlan0) entered 
forwarding state
May  7 21:38:05 cerberus kernel: [   73.495913] br0: topology change detected, 
propagating

If you want I can upload the other traces.
I have now blacklisted openvpn-dco-v2 module and will reboot the box to see if 
it happens again,
but I have also xtables-addons-dkms modules which I cannot unload as they are 
needed
for geoip filtering.
Sadly this is a production machine acting as my firewall/router/access 
point/ipc  so I cannot 
experiment that much with it.
After reboot I've got a new trace. so yes I can reproduce it reliably.
Let me know  how I can help debug this.

Ciao,
Tito

May  7 21:37:49 cerberus kernel: [   58.392874] br0: port 7(wlan0) entered 
learning state
May  7 21:38:05 cerberus kernel: [   73.495898] br0: port 7(wlan0) entered 
forwarding state
May  7 21:38:05 cerberus kernel: [   73.495913] br0: topology change detected, 
propagating
May  7 21:38:05 cerberus kernel: [   73.523314] ------------[ cut here 
]------------
May  7 21:38:05 cerberus kernel: [   73.523321] WARNING: CPU: 3 PID: 0 at 
net/bridge/br_netfilter_hooks.c:622 br_nf_local_in+0x1a9/0x1d0 [br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523338] Modules linked in: tun ctr ccm 
nf_tables xt_nat xt_recent xt_geoip(OE) xt_NFQUEUE xt_mark xt_CT xt_tcpudp 
xt_helper nf_nat_ftp nf_conntrack_ftp ip6table_raw ip6table_mangle ip6table_nat 
xt_MASQUERADE iptable_nat nf_nat xt_TCPMSS xt_LOG nf_log_syslog ipt_REJECT 
nf_reject_ipv4 iptable_raw iptable_mangle xt_multiport xt_state xt_limit 
xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c 
ip6table_filter ip6_tables iptable_filter ip_tables x_tables tcp_bbr nct6775 
nct6775_core hwmon_vid br_netfilter bridge stp llc nfnetlink_queue nfnetlink 
intel_rapl_msr rt2800usb intel_rapl_common ppdev i915 x86_pkg_temp_thermal 
evdev intel_powerclamp rt2x00usb rt2800lib drm_buddy coretemp video rt2x00lib 
ghash_clmulni_intel sha512_ssse3 wmi sha512_generic drm_display_helper 
sha256_ssse3 cec sha1_ssse3 mac80211 rc_core aesni_intel libarc4 crypto_simd 
cfg80211 cryptd ttm rapl drm_kms_helper intel_cstate rfkill drm intel_uncore 
iTCO_wdt intel_pmc
 _bxt pcspkr iTCO_vendor_support
May  7 21:38:05 cerberus kernel: [   73.523451]  watchdog serio_raw parport_pc 
parport at24 button ext4 crc16 mbcache jbd2 crc32c_generic sg sd_mod t10_pi 
crc64_rocksoft crc64 crc_t10dif crct10dif_generic ehci_pci ahci ehci_hcd 
libahci crct10dif_pclmul crct10dif_common crc32_pclmul usbcore libata 
crc32c_intel usb_common lpc_ich psmouse scsi_mod i2c_i801 i2c_smbus scsi_common 
igb i2c_algo_bit dca
May  7 21:38:05 cerberus kernel: [   73.523500] CPU: 3 PID: 0 Comm: swapper/3 
Tainted: G           OE      6.1.0-21-amd64 #1  Debian 6.1.90-1
May  7 21:38:05 cerberus kernel: [   73.523505] Hardware name: Sophos UTM/To be 
filled by O.E.M., BIOS 4.6.4 11/08/2011
May  7 21:38:05 cerberus kernel: [   73.523507] RIP: 
0010:br_nf_local_in+0x1a9/0x1d0 [br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523516] Code: df e8 4b c7 f9 ce 66 83 
ab b8 00 00 00 08 eb 94 be 04 00 00 00 48 89 df e8 34 c7 f9 ce 66 83 ab b8 00 
00 00 04 e9 7a ff ff ff <0f> 0b e9 f0 fe ff ff 0f 0b e9 dd fe ff ff 48 89 ef e8 
41 77 04 cf
May  7 21:38:05 cerberus kernel: [   73.523519] RSP: 0018:ffffb07200144928 
EFLAGS: 00010202
May  7 21:38:05 cerberus kernel: [   73.523523] RAX: 0000000000000002 RBX: 
ffff970e43d13f00 RCX: 0000000000000000
May  7 21:38:05 cerberus kernel: [   73.523525] RDX: ffffb07200144980 RSI: 
ffff970e43d13f00 RDI: 0000000000000000
May  7 21:38:05 cerberus kernel: [   73.523527] RBP: ffff970e4294e800 R08: 
0000000000000001 R09: ffff970e43e8c980
May  7 21:38:05 cerberus kernel: [   73.523529] R10: 0000000000000000 R11: 
000000000000000c R12: ffffb07200144980
May  7 21:38:05 cerberus kernel: [   73.523531] R13: 0000000000000000 R14: 
ffff970e428f5180 R15: ffff970e410e6400
May  7 21:38:05 cerberus kernel: [   73.523539] FS:  0000000000000000(0000) 
GS:ffff971170180000(0000) knlGS:0000000000000000
May  7 21:38:05 cerberus kernel: [   73.523542] CS:  0010 DS: 0000 ES: 0000 
CR0: 0000000080050033
May  7 21:38:05 cerberus kernel: [   73.523545] CR2: 0000563f7840b000 CR3: 
000000030c210004 CR4: 00000000000606e0
May  7 21:38:05 cerberus kernel: [   73.523549] Call Trace:
May  7 21:38:05 cerberus kernel: [   73.523553]  <IRQ>
May  7 21:38:05 cerberus kernel: [   73.523556]  ? __warn+0x7d/0xc0
May  7 21:38:05 cerberus kernel: [   73.523562]  ? br_nf_local_in+0x1a9/0x1d0 
[br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523573]  ? report_bug+0xe2/0x150
May  7 21:38:05 cerberus kernel: [   73.523582]  ? handle_bug+0x41/0x70
May  7 21:38:05 cerberus kernel: [   73.523587]  ? exc_invalid_op+0x13/0x60
May  7 21:38:05 cerberus kernel: [   73.523591]  ? asm_exc_invalid_op+0x16/0x20
May  7 21:38:05 cerberus kernel: [   73.523597]  ? br_nf_local_in+0x1a9/0x1d0 
[br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523607]  nf_hook_slow+0x41/0xc0
May  7 21:38:05 cerberus kernel: [   73.523613]  br_pass_frame_up+0x15d/0x1e0 
[bridge]
May  7 21:38:05 cerberus kernel: [   73.523642]  ? 
br_port_flags_change+0x80/0x80 [bridge]
May  7 21:38:05 cerberus kernel: [   73.523666]  
br_handle_frame_finish+0x409/0x5b0 [bridge]
May  7 21:38:05 cerberus kernel: [   73.523692]  ? 
br_handle_local_finish+0x20/0x20 [bridge]
May  7 21:38:05 cerberus kernel: [   73.523714]  br_nf_hook_thresh+0xec/0x100 
[br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523723]  ? 
br_handle_local_finish+0x20/0x20 [bridge]
May  7 21:38:05 cerberus kernel: [   73.523746]  
br_nf_pre_routing_finish+0x184/0x470 [br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523754]  ? 
br_handle_local_finish+0x20/0x20 [bridge]
May  7 21:38:05 cerberus kernel: [   73.523776]  ? 
nf_nat_ipv4_pre_routing+0x45/0xb0 [nf_nat]
May  7 21:38:05 cerberus kernel: [   73.523789]  br_nf_pre_routing+0x477/0x580 
[br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523798]  ? 
br_nf_hook_thresh+0x100/0x100 [br_netfilter]
May  7 21:38:05 cerberus kernel: [   73.523808]  br_handle_frame+0x233/0x3c0 
[bridge]
May  7 21:38:05 cerberus kernel: [   73.523831]  ? 
br_handle_local_finish+0x20/0x20 [bridge]
May  7 21:38:05 cerberus kernel: [   73.523853]  ? 
br_handle_frame_finish+0x5b0/0x5b0 [bridge]
May  7 21:38:05 cerberus kernel: [   73.523876]  
__netif_receive_skb_core.constprop.0+0x263/0xef0
May  7 21:38:05 cerberus kernel: [   73.523883]  
__netif_receive_skb_list_core+0x13a/0x2c0
May  7 21:38:05 cerberus kernel: [   73.523889]  
netif_receive_skb_list_internal+0x1cd/0x300
May  7 21:38:05 cerberus kernel: [   73.523894]  ? dev_gro_receive+0x3b1/0x730
May  7 21:38:05 cerberus kernel: [   73.523898]  ? sugov_get_util+0x7e/0x90
May  7 21:38:05 cerberus kernel: [   73.523902]  napi_complete_done+0x6d/0x1a0
May  7 21:38:05 cerberus kernel: [   73.523907]  igb_poll+0x883/0x1440 [igb]
May  7 21:38:05 cerberus kernel: [   73.523929]  ? enqueue_task_fair+0x87/0x3d0
May  7 21:38:05 cerberus kernel: [   73.523934]  __napi_poll+0x2b/0x160
May  7 21:38:05 cerberus kernel: [   73.523939]  net_rx_action+0x29e/0x350
May  7 21:38:05 cerberus kernel: [   73.523944]  __do_softirq+0xc6/0x2ab
May  7 21:38:05 cerberus kernel: [   73.523951]  ? handle_edge_irq+0x87/0x220
May  7 21:38:05 cerberus kernel: [   73.523958]  __irq_exit_rcu+0xaa/0xe0
May  7 21:38:05 cerberus kernel: [   73.523963]  common_interrupt+0x82/0xa0
May  7 21:38:05 cerberus kernel: [   73.523968]  </IRQ>
May  7 21:38:05 cerberus kernel: [   73.523969]  <TASK>
May  7 21:38:05 cerberus kernel: [   73.523971]  asm_common_interrupt+0x22/0x40
May  7 21:38:05 cerberus kernel: [   73.523975] RIP: 
0010:cpuidle_enter_state+0xde/0x420
May  7 21:38:05 cerberus kernel: [   73.523980] Code: 00 00 31 ff e8 b3 24 97 
ff 45 84 ff 74 16 9c 58 0f 1f 40 00 f6 c4 02 0f 85 25 03 00 00 31 ff e8 88 cf 
9d ff fb 0f 1f 44 00 00 <45> 85 f6 0f 88 85 01 00 00 49 63 d6 48 8d 04 52 48 8d 
04 82 49 8d
May  7 21:38:05 cerberus kernel: [   73.523983] RSP: 0018:ffffb072000b7e90 
EFLAGS: 00000246
May  7 21:38:05 cerberus kernel: [   73.523986] RAX: ffff9711701b1a40 RBX: 
ffff9711701bbf00 RCX: 0000000000000000
May  7 21:38:05 cerberus kernel: [   73.523988] RDX: 0000000000000003 RSI: 
fffffffc13822415 RDI: 0000000000000000
May  7 21:38:05 cerberus kernel: [   73.523991] RBP: 0000000000000004 R08: 
0000000000000004 R09: 00000000296253c8
May  7 21:38:05 cerberus kernel: [   73.523993] R10: 0000000000000018 R11: 
0000000000008baf R12: ffffffff90f9ef20
May  7 21:38:05 cerberus kernel: [   73.523995] R13: 000000111e53bf09 R14: 
0000000000000004 R15: 0000000000000000
May  7 21:38:05 cerberus kernel: [   73.524001]  cpuidle_enter+0x29/0x40
May  7 21:38:05 cerberus kernel: [   73.524005]  do_idle+0x202/0x2a0
May  7 21:38:05 cerberus kernel: [   73.524010]  cpu_startup_entry+0x26/0x30
May  7 21:38:05 cerberus kernel: [   73.524015]  start_secondary+0x12a/0x150
May  7 21:38:05 cerberus kernel: [   73.524022]  
secondary_startup_64_no_verify+0xe5/0xeb
May  7 21:38:05 cerberus kernel: [   73.524030]  </TASK>
May  7 21:38:05 cerberus kernel: [   73.524032] ---[ end trace 0000000000000000 
]---

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