Package: src:linux Version: 4.19.118-2+deb10u1 Severity: normal Dear Maintainer,
During my semi-regular auditing of the system log, I noticed the below warning and stack trace. I have no idea what may have caused it, and the system has been operating normally for weeks (continuous uptime) and appears to still be operating normally. Regards, Aidan Gauland Note: Some sensitive apparmor audit lines have been removed from the kernel log here. -- Package-specific info: ** Version: Linux version 4.19.0-9-amd64 (debian-kernel@lists.debian.org) (gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.118-2+deb10u1 (2020-06-07) ** Command line: BOOT_IMAGE=/BOOT/debian@/vmlinuz-4.19.0-9-amd64 root=ZFS=/ROOT/debian ro root=ZFS=rpool/ROOT/debian quiet ** Tainted: PWOE (12801) * Proprietary module has been loaded. * Taint on warning. * Out-of-tree module has been loaded. * Unsigned module has been loaded. ** Kernel log: [2513851.122581] kauditd_printk_skb: 10 callbacks suppressed [2693086.705995] ------------[ cut here ]------------ [2693086.706047] WARNING: CPU: 3 PID: 0 at net/ipv4/tcp_input.c:2799 tcp_fastretrans_alert.cold.86+0x19/0x74 [2693086.706049] Modules linked in: nft_reject_inet nft_reject nft_log nft_ct rpcsec_gss_krb5 nf_tables_set nf_log_ipv6 ip6_tables ip6t_REJECT nf_reject_ipv6 nf_log_ipv4 nf_log_common nft_limit nft_counter xt_LOG xt_limit xt_comment xt_tcpudp ipt_REJECT nf_reject_ipv4 xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c crc32c_generic nft_compat nf_tables nfnetlink nls_ascii nls_cp437 vfat fat intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ipmi_ssif kvm ast ttm irqbypass drm_kms_helper crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate mxm_wmi drm sg evdev joydev intel_uncore mei_me efi_pstore ipmi_si mei intel_rapl_perf pcspkr efivars pcc_cpufreq iTCO_wdt ipmi_devintf iTCO_vendor_support intel_pch_thermal ioatdma ipmi_msghandler wmi button acpi_pad [2693086.706102] nfsd auth_rpcgss nfs_acl lockd grace sunrpc efivarfs ip_tables x_tables autofs4 zfs(POE) zunicode(POE) zlua(POE) zavl(POE) icp(POE) zcommon(POE) znvpair(POE) spl(OE) hid_generic usbhid hid sd_mod crc32c_intel ahci xhci_pci libahci ehci_pci xhci_hcd ehci_hcd libata ixgbe aesni_intel scsi_mod igb usbcore aes_x86_64 crypto_simd cryptd glue_helper lpc_ich i2c_i801 i2c_algo_bit mfd_core dca usb_common mdio [2693086.706142] CPU: 3 PID: 0 Comm: swapper/3 Tainted: P W OE 4.19.0-9-amd64 #1 Debian 4.19.118-2+deb10u1 [2693086.706144] Hardware name: Supermicro Super Server/X10SDV-4C+-TLN4F, BIOS 2.1 11/22/2019 [2693086.706150] RIP: 0010:tcp_fastretrans_alert.cold.86+0x19/0x74 [2693086.706154] Code: c7 48 f0 c3 96 e8 5a a8 a8 ff 0f 0b e9 ea ad ff ff 48 c7 c7 48 f0 c3 96 48 89 4c 24 10 44 89 4c 24 08 89 14 24 e8 3a a8 a8 ff <0f> 0b 8b 14 24 44 8b 4c 24 08 48 8b 4c 24 10 e9 a9 b2 ff ff 48 c7 [2693086.706157] RSP: 0018:ffff93d39fac3b10 EFLAGS: 00010246 [2693086.706160] RAX: 0000000000000024 RBX: ffff93d374724400 RCX: 0000000000000000 [2693086.706163] RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 0000000000000300 [2693086.706165] RBP: 0000000000000000 R08: 000000000011c6ad R09: 0000000000000004 [2693086.706166] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 [2693086.706168] R13: ffff93d39fac3ba8 R14: 0000000000000000 R15: 0000000000000001 [2693086.706172] FS: 0000000000000000(0000) GS:ffff93d39fac0000(0000) knlGS:0000000000000000 [2693086.706174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [2693086.706176] CR2: 00007f014aa2b000 CR3: 00000007e840a001 CR4: 00000000003606e0 [2693086.706179] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [2693086.706181] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [2693086.706182] Call Trace: [2693086.706186] <IRQ> [2693086.706194] tcp_ack+0x95d/0x1120 [2693086.706202] ? sched_clock+0x5/0x10 [2693086.706208] ? tcp_write_xmit+0x3cf/0x1000 [2693086.706214] tcp_rcv_established+0x327/0x650 [2693086.706219] tcp_v4_do_rcv+0x12a/0x1e0 [2693086.706223] tcp_v4_rcv+0xb1a/0xc20 [2693086.706240] ? nft_do_chain_inet+0x8a/0x100 [nf_tables] [2693086.706248] ip_local_deliver_finish+0x63/0x1e0 [2693086.706253] ip_local_deliver+0xe0/0xf0 [2693086.706258] ? ip_sublist_rcv_finish+0x80/0x80 [2693086.706263] ip_rcv+0xbc/0xd0 [2693086.706268] ? ip_rcv_finish_core.isra.18+0x360/0x360 [2693086.706275] __netif_receive_skb_one_core+0x52/0x70 [2693086.706280] netif_receive_skb_internal+0x2f/0xa0 [2693086.706285] napi_gro_receive+0xba/0xe0 [2693086.706303] igb_poll+0x481/0xeb0 [igb] [2693086.706310] net_rx_action+0x149/0x3b0 [2693086.706318] __do_softirq+0xde/0x2d8 [2693086.706325] irq_exit+0xba/0xc0 [2693086.706330] do_IRQ+0x7f/0xe0 [2693086.706335] common_interrupt+0xf/0xf [2693086.706337] </IRQ> [2693086.706342] RIP: 0010:cpuidle_enter_state+0xb9/0x320 [2693086.706345] Code: e8 dc c0 b0 ff 80 7c 24 0b 00 74 17 9c 58 0f 1f 44 00 00 f6 c4 02 0f 85 3b 02 00 00 31 ff e8 ae b0 b6 ff fb 66 0f 1f 44 00 00 <48> b8 ff ff ff ff f3 01 00 00 48 2b 1c 24 ba ff ff ff 7f 48 39 c3 [2693086.706347] RSP: 0018:ffffb9adc31e3e90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffdc [2693086.706351] RAX: ffff93d39fae20c0 RBX: 000991591c74fea6 RCX: 000000000000001f [2693086.706353] RDX: 000991591c74fea6 RSI: 000000003a2e90d6 RDI: 0000000000000000 [2693086.706355] RBP: ffff93d39faea320 R08: 0000000000000002 R09: 0000000000021980 [2693086.706357] R10: 00151bdc9d2230c1 R11: ffff93d39fae10a8 R12: 0000000000000004 [2693086.706358] R13: ffffffff96eb7198 R14: 0000000000000004 R15: 0000000000000000 [2693086.706367] do_idle+0x228/0x270 [2693086.706373] cpu_startup_entry+0x6f/0x80 [2693086.706380] start_secondary+0x1a4/0x1f0 [2693086.706386] secondary_startup_64+0xa4/0xb0 [2693086.706391] ---[ end trace 70a8df721d0f37e5 ]--- ** Model information sys_vendor: Supermicro product_name: Super Server product_version: 0123456789 chassis_vendor: Supermicro chassis_version: 0123456789 bios_vendor: American Megatrends Inc. bios_version: 2.1 board_vendor: Supermicro board_name: X10SDV-4C+-TLN4F board_version: 2.00 ** Loaded modules: nft_reject_inet nft_reject nft_log nft_ct rpcsec_gss_krb5 nf_tables_set nf_log_ipv6 ip6_tables ip6t_REJECT nf_reject_ipv6 nf_log_ipv4 nf_log_common nft_limit nft_counter xt_LOG xt_limit xt_comment xt_tcpudp ipt_REJECT nf_reject_ipv4 xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c crc32c_generic nft_compat nf_tables nfnetlink nls_ascii nls_cp437 vfat fat intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ipmi_ssif kvm ast ttm irqbypass drm_kms_helper crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate mxm_wmi drm sg evdev joydev intel_uncore mei_me efi_pstore ipmi_si mei intel_rapl_perf pcspkr efivars pcc_cpufreq iTCO_wdt ipmi_devintf iTCO_vendor_support intel_pch_thermal ioatdma ipmi_msghandler wmi button acpi_pad nfsd auth_rpcgss nfs_acl lockd grace sunrpc efivarfs ip_tables x_tables autofs4 zfs(POE) zunicode(POE) zlua(POE) zavl(POE) icp(POE) zcommon(POE) znvpair(POE) spl(OE) hid_generic usbhid hid sd_mod crc32c_intel ahci xhci_pci libahci ehci_pci xhci_hcd ehci_hcd libata ixgbe aesni_intel scsi_mod igb usbcore aes_x86_64 crypto_simd cryptd glue_helper lpc_ich i2c_i801 i2c_algo_bit mfd_core dca usb_common mdio ** Network interface configuration: # interfaces(5) file used by ifup(8) and ifdown(8) # Include files from /etc/network/interfaces.d: source-directory /etc/network/interfaces.d ** Network status: *** IP interfaces and addresses: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:25:90:be:5c:70 brd ff:ff:ff:ff:ff:ff inet 192.168.1.165/24 brd 192.168.1.255 scope global dynamic eno1 valid_lft 35421sec preferred_lft 35421sec inet6 fe80::225:90ff:febe:5c70/64 scope link valid_lft forever preferred_lft forever 3: eno2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 00:25:90:be:5c:71 brd ff:ff:ff:ff:ff:ff 4: eno3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 00:25:90:be:5d:7a brd ff:ff:ff:ff:ff:ff 5: eno4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 00:25:90:be:5d:7b brd ff:ff:ff:ff:ff:ff *** Device statistics: Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed eno3: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 eno2: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 eno1: 1252076355581 4150948596 0 0 26325 0 0 153382 5788560117641 5616395868 0 0 0 0 0 0 eno4: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 lo: 656027208 1343523 0 0 0 0 0 0 656027208 1343523 0 0 0 0 0 0 ** PCI devices: not available ** USB devices: not available -- System Information: Debian Release: 10.4 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.19.0-9-amd64 (SMP w/8 CPU cores) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_NZ.UTF-8, LC_CTYPE=en_NZ.UTF-8 (charmap=UTF-8), LANGUAGE=en_NZ.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages linux-image-4.19.0-9-amd64 depends on: ii initramfs-tools [linux-initramfs-tool] 0.133+deb10u1 ii kmod 26-1 ii linux-base 4.6 Versions of packages linux-image-4.19.0-9-amd64 recommends: ii apparmor 2.13.2-10 ii firmware-linux-free 3.4 Versions of packages linux-image-4.19.0-9-amd64 suggests: pn debian-kernel-handbook <none> ii grub-efi-amd64 2.02+dfsg1-20 pn linux-doc-4.19 <none> Versions of packages linux-image-4.19.0-9-amd64 is related to: pn firmware-amd-graphics <none> pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> pn firmware-brcm80211 <none> pn firmware-cavium <none> pn firmware-intel-sound <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux-nonfree <none> pn firmware-misc-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-realtek <none> pn firmware-samsung <none> pn firmware-siano <none> pn firmware-ti-connectivity <none> pn xen-hypervisor <none> -- no debconf information
