--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: WARNING: at net/ipv4/tcp_input.c:2799 tcp_fastretrans_alert
- From: Aidan Gauland <aidalgol@fastmail.net>
- Date: Wed, 29 Jul 2020 15:02:24 +1200
- Message-id: <ad62149e-e388-6fa4-ecfc-ce7591eb89ae@fastmail.net>
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
--- End Message ---