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[204.195.22.127]) by smtp.gmail.com with ESMTPSA id l13sm2242829pgp.25.2020.10.23.08.24.18 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Oct 2020 08:24:19 -0700 (PDT) Date: Fri, 23 Oct 2020 08:24:11 -0700 From: Stephen Hemminger To: netdev@vger.kernel.org Subject: Fw: [Bug 209823] New: system panic since commit d18d22ce8f62839365c984b1df474d3975ed4eb2 Message-ID: <20201023082411.27a8a3a7@hermes.local> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Begin forwarded message: Date: Fri, 23 Oct 2020 03:38:54 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: stephen@networkplumber.org Subject: [Bug 209823] New: system panic since commit d18d22ce8f62839365c984b1df474d3975ed4eb2 https://bugzilla.kernel.org/show_bug.cgi?id=209823 Bug ID: 209823 Summary: system panic since commit d18d22ce8f62839365c984b1df474d3975ed4eb2 Product: Networking Version: 2.5 Kernel Version: 5.4.15 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: Other Assignee: stephen@networkplumber.org Reporter: liuzx@knownsec.com Regression: No Created attachment 293133 --> https://bugzilla.kernel.org/attachment.cgi?id=293133&action=edit kernel config 5.4.15-ks-00023-gd18d22ce8f62 On a server running as a NAT gateway, after upgrade the kernel to 5.4 series, the system panic immediately after keepalived transfer it to master state. I did a git bisect on 5.4 release, and the result is: # first bad commit: [d18d22ce8f62839365c984b1df474d3975ed4eb2] net: Fix packet reordering caused by GRO and listified RX cooperation kernel 5.5.0 has no such problem. See attachment for the kernel config. Following is the message captured from serial console: [ 75.333333][ C1] stack segment: 0000 [#1] SMP PTI [ 75.338338][ C1] CPU: 1 PID: 4486 Comm: realpath Tainted: G T 5.4.15-ks-00023-gd18d22ce8f62 #4 [ 75.348586][ C1] Hardware name: Dell Inc. PowerEdge R210 II/0CP8FC, BIOS 2.10.0 05/24/2018 [ 75.357167][ C1] RIP: 0010:skb_seq_read+0x2c/0x200 [ 75.362243][ C1] Code: 44 00 00 4c 8b 4a 20 03 3a 39 7a 04 0f 86 a0 01 00 00 55 41 89 fa 53 48 8b 6a 18 65 48 8b 1c 25 c0 6b 01 00 49 89 db 8b 7a 0c <44> 8b 45 70 41 01 f8 44 2b 45 74 45 39 c2 0f 83 a1 00 00 00 4d 85 [ 75.381778][ C1] RSP: 0000:ffffb497c0114a98 EFLAGS: 00010286 [ 75.387727][ C1] RAX: 00000000000006c0 RBX: ffff9bcf38e29fc0 RCX: ffff9bcf35dfd800 [ 75.397580][ C1] RDX: ffffb497c0114b00 RSI: ffffb497c0114ab0 RDI: 0000000000000114 [ 75.407416][ C1] RBP: dead000000000100 R08: ffff9bcf35559700 R09: 0000000000000000 [ 75.417241][ C1] R10: 0000000000000114 R11: ffff9bcf38e29fc0 R12: ffffb497c0114afc [ 75.427069][ C1] R13: 0000000000000114 R14: 0000000000000114 R15: 0000000000000116 [ 75.436882][ C1] FS: 0000000000000000(0000) GS:ffff9bcf3ba40000(0000) knlGS:0000000000000000 [ 75.447650][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.456093][ C1] CR2: 00007f5182e735c0 CR3: 000000008f4f6002 CR4: 00000000001606e0 [ 75.465934][ C1] Call Trace: [ 75.471089][ C1] [ 75.475801][ C1] bm_find+0x52/0x120 [ts_bm] [ 75.482325][ C1] skb_find_text+0x77/0xd0 [ 75.488570][ C1] string_mt+0x28/0x35 [xt_string] [ 75.495496][ C1] ipt_do_table+0x29e/0x680 [ip_tables] [ 75.502843][ C1] ? update_group_capacity+0x25/0x1e0 [ 75.510002][ C1] nf_hook_slow+0x40/0xb0 [ 75.516095][ C1] ip_sublist_rcv+0x253/0x280 [ 75.522517][ C1] ? ip_rcv_finish_core.isra.0+0x390/0x390 [ 75.530054][ C1] ip_list_rcv+0x119/0x13d [ 75.536191][ C1] __netif_receive_skb_list_core+0x246/0x270 [ 75.543889][ C1] netif_receive_skb_list_internal+0x1c3/0x2f0 [ 75.551753][ C1] gro_normal_list.part.0+0x19/0x40 [ 75.558641][ C1] napi_complete_done+0x86/0x120 [ 75.565264][ C1] bnx2_poll_msix+0x9f/0xd0 [bnx2] [ 75.572065][ C1] net_rx_action+0x161/0x3b0 [ 75.578342][ C1] __do_softirq+0xee/0x2ff [ 75.584436][ C1] irq_exit+0xe6/0xf0 [ 75.590078][ C1] do_IRQ+0x58/0xe0 [ 75.595523][ C1] common_interrupt+0xf/0xf [ 75.601640][ C1] [ 75.606201][ C1] RIP: 0010:kthread_blkcg+0x14/0x30 [ 75.613016][ C1] Code: 8b 44 24 20 eb 83 41 b8 ea ff ff ff e9 94 fc ff ff 90 90 90 90 90 0f 1f 44 00 00 31 c0 65 48 8b 14 25 c0 6b 01 00 f6 42 72 20 <74> 10 48 8b 82 70 09 00 00 48 85 c0 74 04 48 8b 40 58 c3 66 0f 1f [ 75.636128][ C1] RSP: 0000:ffffb497c07d7d78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffda [ 75.646247][ C1] RAX: 0000000000000000 RBX: ffffb497c07d7e00 RCX: 0000000000000000 [ 75.655930][ C1] RDX: ffff9bcf38e29fc0 RSI: 0000000000000000 RDI: ffff9bcf07d0d000 [ 75.665613][ C1] RBP: 0000000000000000 R08: ffff9bcf07d0d000 R09: 0000000000000001 [ 75.675305][ C1] R10: 0000000000000002 R11: ffffed4982399b80 R12: 0000000000000cc0 [ 75.685002][ C1] R13: 0000000000000000 R14: ffff9bcf3a897080 R15: 0000000000000055 [ 75.694687][ C1] mem_cgroup_throttle_swaprate+0x25/0x11f [ 75.702197][ C1] mem_cgroup_try_charge_delay+0x33/0x40 [ 75.709515][ C1] do_fault+0x8d/0x630 [ 75.715254][ C1] __handle_mm_fault+0x451/0x700 [ 75.721843][ C1] handle_mm_fault+0xc4/0x200 [ 75.728158][ C1] do_user_addr_fault+0x202/0x460 [ 75.734793][ C1] do_page_fault+0x31/0x110 [ 75.740871][ C1] page_fault+0x3e/0x50 [ 75.746586][ C1] RIP: 0033:0x7f5182e4cef4 [ 75.752552][ C1] Code: 00 00 00 00 66 90 55 48 89 e5 41 57 49 89 ff 41 56 41 55 41 54 53 48 83 ec 38 0f 31 48 c1 e2 20 48 09 d0 48 8d 15 14 6f 02 00 <48> 89 05 c5 66 02 00 48 8b 05 06 6f 02 00 48 89 d1 48 2b 0d 7c 70 [ 75.775424][ C1] RSP: 002b:00007ffc55eacf00 EFLAGS: 00010202 [ 75.783004][ C1] RAX: 0000005c80a2b080 RBX: 0000000000000000 RCX: 0000000000000000 [ 75.792484][ C1] RDX: 00007f5182e73e08 RSI: 0000000000000000 RDI: 00007ffc55eacf70 [ 75.801944][ C1] RBP: 00007ffc55eacf60 R08: 0000000000000000 R09: 0000000000000000 [ 75.811422][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 75.820875][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffc55eacf70 [ 75.830294][ C1] Modules linked in: tcp_diag inet_diag bridge stp llc nf_conntrack_netlink xfrm_user xfrm_algo overlay af_packet cn xt_AUDIT xt_recent xt_connlimit nf_conncount xt_conntrack iptable_filter iptable_mangle xt_REDIREC T xt_nat iptable_nat nf_nat xt_comment ts_bm xt_multiport xt_addrtype xt_CT nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c crc32c_generic xt_string xt_set iptable_raw ip_tables x_tables bpfilter ip_set_hash_netportnet ip_set nfnet link msr binfmt_misc coretemp intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm mgag200 drm_vram_helper ttm drm_kms_helper irqbypass dm_mod crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm aesni_i ntel crypto_simd cryptd input_leds igb led_class glue_helper joydev usbkbd intel_cstate intel_uncore dcdbas agpgart iTCO_wdt iTCO_vendor_support evdev mac_hid ipmi_ssif sr_mod watchdog fb_sys_fops syscopyarea sysfillrect cdrom sysimgblt intel_rapl_perf bnx2 ipmi_si i2c_i801 pcspkr [ 75.830342][ C1] ie31200_edac hwmon ipmi_devintf dca edac_core thermal i2c_algo_bit ipmi_msghandler lpc_ich wmi rtc_cmos i2c_core ata_generic pata_acpi button fan ext4 crc16 jbd2 mbcache sd_mod hid_generic usbhid hid ata_piix ehc i_pci libata crc32c_intel ehci_hcd scsi_mod usbcore usb_common [ 75.958030][ C2] stack segment: 0000 [#2] SMP PTI [ 75.958059][ C1] ---[ end trace fa1655e994cf04d6 ]--- [ 75.963908][ C2] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G D T 5.4.15-ks-00023-gd18d22ce8f62 #4 [ 75.963910][ C2] Hardware name: Dell Inc. PowerEdge R210 II/0CP8FC, BIOS 2.10.0 05/24/2018 [ 76.027718][ C1] RIP: 0010:skb_seq_read+0x2c/0x200 [ 76.037146][ C2] RIP: 0010:skb_seq_read+0x2c/0x200 [ 76.037148][ C2] Code: 44 00 00 4c 8b 4a 20 03 3a 39 7a 04 0f 86 a0 01 00 00 55 41 89 fa 53 48 8b 6a 18 65 48 8b 1c 25 c0 6b 01 00 49 89 db 8b 7a 0c <44> 8b 45 70 41 01 f8 44 2b 45 74 45 39 c2 0f 83 a1 00 00 00 4d 85 [ 76.046597][ C1] Code: 44 00 00 4c 8b 4a 20 03 3a 39 7a 04 0f 86 a0 01 00 00 55 41 89 fa 53 48 8b 6a 18 65 48 8b 1c 25 c0 6b 01 00 49 89 db 8b 7a 0c <44> 8b 45 70 41 01 f8 44 2b 45 74 45 39 c2 0f 83 a1 00 00 00 4d 85 [ 76.052566][ C2] RSP: 0018:ffffb497c0148a98 EFLAGS: 00010286 [ 76.052568][ C2] RAX: 00000000000006c0 RBX: ffff9bcf07f85f40 RCX: ffff9bcf35e9a000 [ 76.058528][ C1] RSP: 0000:ffffb497c0114a98 EFLAGS: 00010286 [ 76.079855][ C2] RDX: ffffb497c0148b00 RSI: ffffb497c0148ab0 RDI: 00000000000005c8 [ 76.079855][ C2] RBP: dead000000000100 R08: ffff9bcf36885100 R09: 0000000000000000 [ 76.079857][ C2] R10: 00000000000005c8 R11: ffff9bcf07f85f40 R12: ffffb497c0148afc [ 76.101282][ C1] RAX: 00000000000006c0 RBX: ffff9bcf38e29fc0 RCX: ffff9bcf35dfd800 [ 76.108197][ C2] R13: 00000000000005c8 R14: 00000000000005c8 R15: 00000000000005c9 [ 76.108198][ C2] FS: 0000000000000000(0000) GS:ffff9bcf3ba80000(0000) knlGS:0000000000000000 [ 76.108199][ C2] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.117038][ C1] RDX: ffffb497c0114b00 RSI: ffffb497c0114ab0 RDI: 0000000000000114 [ 76.123962][ C2] CR2: 00007feec4003068 CR3: 000000001220a001 CR4: 00000000001606e0 [ 76.123963][ C2] Call Trace: [ 76.132814][ C1] RBP: dead000000000100 R08: ffff9bcf35559700 R09: 0000000000000000 [ 76.141663][ C2] [ 76.150511][ C1] R10: 0000000000000114 R11: ffff9bcf38e29fc0 R12: ffffb497c0114afc [ 76.159360][ C2] bm_find+0x52/0x120 [ts_bm] [ 76.168209][ C1] R13: 0000000000000114 R14: 0000000000000114 R15: 0000000000000116 [ 76.178016][ C2] skb_find_text+0x77/0xd0 [ 76.185475][ C1] FS: 0000000000000000(0000) GS:ffff9bcf3ba40000(0000) knlGS:0000000000000000 [ 76.194332][ C2] string_mt+0x28/0x35 [xt_string] [ 76.194334][ C2] ipt_do_table+0x29e/0x680 [ip_tables] [ 76.203202][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.207386][ C2] ? ip_finish_output2+0x1ad/0x580 [ 76.207392][ C2] ? nf_confirm+0xcc/0xf0 [nf_conntrack] [ 76.216270][ C1] CR2: 00007f5182e735c0 CR3: 000000008f4f6002 CR4: 00000000001606e0 [ 76.220035][ C2] ? update_group_capacity+0x25/0x1e0 [ 76.220037][ C2] nf_hook_slow+0x40/0xb0 [ 76.228932][ C1] Kernel panic - not syncing: Fatal exception in interrupt [ 76.234539][ C2] ip_sublist_rcv+0x253/0x280 [ 76.325336][ C2] ? ip_rcv_finish_core.isra.0+0x390/0x390 [ 76.332066][ C2] ip_list_rcv+0x119/0x13d [ 76.337413][ C2] __netif_receive_skb_list_core+0x246/0x270 [ 76.344327][ C2] netif_receive_skb_list_internal+0x1c3/0x2f0 [ 76.351409][ C2] gro_normal_list.part.0+0x19/0x40 [ 76.357546][ C2] napi_complete_done+0x86/0x120 [ 76.363425][ C2] bnx2_poll_msix+0x9f/0xd0 [bnx2] [ 76.369456][ C2] net_rx_action+0x161/0x3b0 [ 76.374942][ C2] __do_softirq+0xee/0x2ff [ 76.380249][ C2] irq_exit+0xe6/0xf0 [ 76.385108][ C2] do_IRQ+0x58/0xe0 [ 76.389795][ C2] common_interrupt+0xf/0xf [ 76.395176][ C2] [ 76.398998][ C2] RIP: 0010:cpuidle_enter_state+0xc4/0x450 [ 76.405687][ C2] Code: e8 c1 f0 a6 ff 80 7c 24 0f 00 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 61 03 00 00 31 ff e8 53 09 ad ff fb 66 0f 1f 44 00 00 <45> 85 e4 0f 88 8c 02 00 00 49 63 cc 4c 2b 6c 24 10 48 8d 04 49 48 [ 76.427204][ C2] RSP: 0018:ffffb497c00afe68 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffda [ 76.436486][ C2] RAX: ffff9bcf3baaa940 RBX: ffffffffa22c6480 RCX: 000000000000001f [ 76.445316][ C2] RDX: 0000000000000000 RSI: 000000002962566a RDI: 0000000000000000 [ 76.454125][ C2] RBP: ffff9bcf3bab4600 R08: 000000118e9c2d85 R09: 0000000000000390 [ 76.462907][ C2] R10: ffff9bcf3baa9620 R11: ffff9bcf3baa9600 R12: 0000000000000004 [ 76.471658][ C2] R13: 000000118e9c2d85 R14: 0000000000000004 R15: ffff9bcf07f85f40 [ 76.480393][ C2] ? cpuidle_enter_state+0x9f/0x450 [ 76.486333][ C2] cpuidle_enter+0x29/0x40 [ 76.491476][ C2] do_idle+0x1e1/0x270 [ 76.496265][ C2] cpu_startup_entry+0x19/0x20 [ 76.501741][ C2] start_secondary+0x173/0x1c0 [ 76.507197][ C2] secondary_startup_64+0xa4/0xb0 [ 76.512907][ C2] Modules linked in: tcp_diag inet_diag bridge stp llc nf_conntrack_netlink xfrm_user xfrm_algo overlay af_packet cn xt_AUDIT xt_recent xt_connlimit nf_conncount xt_conntrack iptable_filter iptable_mangle xt_REDIREC T xt_nat iptable_nat nf_nat xt_comment ts_bm xt_multiport xt_addrtype xt_CT nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c crc32c_generic xt_string xt_set iptable_raw ip_tables x_tables bpfilter ip_set_hash_netportnet ip_set nfnet link msr binfmt_misc coretemp intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm mgag200 drm_vram_helper ttm drm_kms_helper irqbypass dm_mod crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm aesni_i ntel crypto_simd cryptd input_leds igb led_class glue_helper joydev usbkbd intel_cstate intel_uncore dcdbas agpgart iTCO_wdt iTCO_vendor_support evdev mac_hid ipmi_ssif sr_mod watchdog fb_sys_fops syscopyarea sysfillrect cdrom sysimgblt intel_rapl_perf bnx2 ipmi_si i2c_i801 pcspkr [ 76.512938][ C2] ie31200_edac hwmon ipmi_devintf dca edac_core thermal i2c_algo_bit ipmi_msghandler lpc_ich wmi rtc_cmos i2c_core ata_generic pata_acpi button fan ext4 crc16 jbd2 mbcache sd_mod hid_generic usbhid hid ata_piix ehc i_pci libata crc32c_intel ehci_hcd scsi_mod usbcore usb_common [ 76.633079][ C0] stack segment: 0000 [#3] SMP PTI [ 76.639022][ C0] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G D T 5.4.15-ks-00023-gd18d22ce8f62 #4 [ 76.649995][ C0] Hardware name: Dell Inc. PowerEdge R210 II/0CP8FC, BIOS 2.10.0 05/24/2018 [ 76.659513][ C0] RIP: 0010:skb_seq_read+0x2c/0x200 [ 76.665559][ C0] Code: 44 00 00 4c 8b 4a 20 03 3a 39 7a 04 0f 86 a0 01 00 00 55 41 89 fa 53 48 8b 6a 18 65 48 8b 1c 25 c0 6b 01 00 49 89 db 8b 7a 0c <44> 8b 45 70 41 01 f8 44 2b 45 74 45 39 c2 0f 83 a1 00 00 00 4d 85 [ 76.687043][ C0] RSP: 0018:ffffb497c0003a98 EFLAGS: 00010286 [ 76.693987][ C0] RAX: 00000000000006c0 RBX: ffffffffa2213780 RCX: ffff9bcf35f97000 [ 76.702842][ C0] RDX: ffffb497c0003b00 RSI: ffffb497c0003ab0 RDI: 00000000000005a0 [ 76.711687][ C0] RBP: dead000000000100 R08: ffff9bcf3a9d4000 R09: 0000000000000000 [ 76.720530][ C0] R10: 00000000000005a0 R11: ffffffffa2213780 R12: ffffb497c0003afc [ 76.729374][ C0] R13: 00000000000005a0 R14: 00000000000005a0 R15: 00000000000005a8 [ 76.738206][ C0] FS: 0000000000000000(0000) GS:ffff9bcf3ba00000(0000) knlGS:0000000000000000 [ 76.747991][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.755429][ C0] CR2: 000000000174b738 CR3: 000000001220a004 CR4: 00000000001606f0 [ 76.764261][ C0] Call Trace: [ 76.768399][ C0] [ 76.772088][ C0] bm_find+0x52/0x120 [ts_bm] [ 76.777601][ C0] skb_find_text+0x77/0xd0 [ 76.782847][ C0] string_mt+0x28/0x35 [xt_string] [ 76.788780][ C0] ipt_do_table+0x29e/0x680 [ip_tables] [ 76.795154][ C0] ? __hrtimer_run_queues+0x125/0x270 [ 76.801344][ C0] ? recalibrate_cpu_khz+0x10/0x10 [ 76.807270][ C0] nf_hook_slow+0x40/0xb0 [ 76.812418][ C0] ip_sublist_rcv+0x253/0x280 [ 76.817899][ C0] ? ip_rcv_finish_core.isra.0+0x390/0x390 [ 76.824509][ C0] ip_list_rcv+0x119/0x13d [ 76.829730][ C0] __netif_receive_skb_list_core+0x246/0x270 [ 76.836513][ C0] netif_receive_skb_list_internal+0x1c3/0x2f0 [ 76.843471][ C0] gro_normal_list.part.0+0x19/0x40 [ 76.849477][ C0] napi_complete_done+0x86/0x120 [ 76.855219][ C0] bnx2_poll_msix+0x9f/0xd0 [bnx2] [ 76.861130][ C0] net_rx_action+0x161/0x3b0 [ 76.866519][ C0] __do_softirq+0xee/0x2ff [ 76.871732][ C0] irq_exit+0xe6/0xf0 [ 76.876514][ C0] do_IRQ+0x58/0xe0 [ 76.881124][ C0] common_interrupt+0xf/0xf [ 76.886421][ C0] [ 76.890163][ C0] RIP: 0010:cpuidle_enter_state+0xc4/0x450 [ 76.896776][ C0] Code: e8 c1 f0 a6 ff 80 7c 24 0f 00 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 61 03 00 00 31 ff e8 53 09 ad ff fb 66 0f 1f 44 00 00 <45> 85 e4 0f 88 8c 02 00 00 49 63 cc 4c 2b 6c 24 10 48 8d 04 49 48 [ 76.918176][ C0] RSP: 0018:ffffffffa2203e58 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffda [ 76.927400][ C0] RAX: ffff9bcf3ba2a940 RBX: ffffffffa22c6480 RCX: 000000000000001f [ 76.936181][ C0] RDX: 0000000000000000 RSI: 000000002962566a RDI: 0000000000000000 [ 76.944956][ C0] RBP: ffff9bcf3ba34600 R08: 000000118f7caec7 R09: 0000000000000385 [ 76.953734][ C0] R10: ffff9bcf3ba29620 R11: ffff9bcf3ba29600 R12: 0000000000000004 [ 76.962514][ C0] R13: 000000118f7caec7 R14: 0000000000000004 R15: ffffffffa2213780 [ 76.971297][ C0] ? cpuidle_enter_state+0x9f/0x450 [ 76.977307][ C0] cpuidle_enter+0x29/0x40 [ 76.982525][ C0] do_idle+0x1e1/0x270 [ 76.987390][ C0] cpu_startup_entry+0x19/0x20 [ 76.992957][ C0] start_kernel+0x549/0x566 [ 76.998261][ C0] secondary_startup_64+0xa4/0xb0 [ 77.004085][ C0] Modules linked in: tcp_diag inet_diag bridge stp llc nf_conntrack_netlink xfrm_user xfrm_algo overlay af_packet cn xt_AUDIT xt_recent xt_connlimit nf_conncount xt_conntrack iptable_filter iptable_mangle xt_REDIREC T xt_nat iptable_nat nf_nat xt_comment ts_bm xt_multiport xt_addrtype xt_CT nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c crc32c_generic xt_string xt_set iptable_raw ip_tables x_tables bpfilter ip_set_hash_netportnet ip_set nfnet link msr binfmt_misc coretemp intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm mgag200 drm_vram_helper ttm drm_kms_helper irqbypass dm_mod crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm aesni_i ntel crypto_simd cryptd input_leds igb led_class glue_helper joydev usbkbd intel_cstate intel_uncore dcdbas agpgart iTCO_wdt iTCO_vendor_support evdev mac_hid ipmi_ssif sr_mod watchdog fb_sys_fops syscopyarea sysfillrect cdrom sysimgblt intel_rapl_perf bnx2 ipmi_si i2c_i801 pcspkr [ 77.004103][ C0] ie31200_edac hwmon ipmi_devintf dca edac_core thermal i2c_algo_bit ipmi_msghandler lpc_ich wmi rtc_cmos i2c_core ata_generic pata_acpi button fan ext4 crc16 jbd2 mbcache sd_mod hid_generic usbhid hid ata_piix ehc i_pci libata crc32c_intel ehci_hcd scsi_mod usbcore usb_common [ 77.124963][ C3] stack segment: 0000 [#4] SMP PTI [ 77.130902][ C3] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G D T 5.4.15-ks-00023-gd18d22ce8f62 #4 [ 77.141857][ C3] Hardware name: Dell Inc. PowerEdge R210 II/0CP8FC, BIOS 2.10.0 05/24/2018 [ 77.151349][ C3] RIP: 0010:skb_seq_read+0x2c/0x200 [ 77.157361][ C3] Code: 44 00 00 4c 8b 4a 20 03 3a 39 7a 04 0f 86 a0 01 00 00 55 41 89 fa 53 48 8b 6a 18 65 48 8b 1c 25 c0 6b 01 00 49 89 db 8b 7a 0c <44> 8b 45 70 41 01 f8 44 2b 45 74 45 39 c2 0f 83 a1 00 00 00 4d 85 [ 77.178755][ C3] RSP: 0018:ffffb497c017ca98 EFLAGS: 00010286 [ 77.185626][ C3] RAX: 00000000000006c0 RBX: ffff9bcf07f81fc0 RCX: ffff9bcf363d1800 [ 77.194410][ C3] RDX: ffffb497c017cb00 RSI: ffffb497c017cab0 RDI: 00000000000005a0 [ 77.203197][ C3] RBP: dead000000000100 R08: ffff9bcf3a9edb00 R09: 0000000000000000 [ 77.211973][ C3] R10: 00000000000005a0 R11: ffff9bcf07f81fc0 R12: ffffb497c017cafc [ 77.220753][ C3] R13: 00000000000005a0 R14: 00000000000005a0 R15: 00000000000005ab [ 77.229531][ C3] FS: 0000000000000000(0000) GS:ffff9bcf3bac0000(0000) knlGS:0000000000000000 [ 77.239269][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.246667][ C3] CR2: 000055903a118028 CR3: 000000001220a001 CR4: 00000000001606e0 [ 77.255447][ C3] Call Trace: [ 77.259544][ C3] [ 77.263192][ C3] bm_find+0x52/0x120 [ts_bm] [ 77.268667][ C3] skb_find_text+0x77/0xd0 [ 77.273883][ C3] string_mt+0x28/0x35 [xt_string] [ 77.279797][ C3] ipt_do_table+0x29e/0x680 [ip_tables] [ 77.280841][ C1] Shutting down cpus with NMI -- You are receiving this mail because: You are the assignee for the bug.