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Subjectigc: 5.10.146 Kernel BUG at 0xffffffff813ce19f
(Un)fortunately I can reproduce this bug by simply removing the
ethernet cable from the box while there is traffic flowing. kprint
below from a console line. Please CC / to me for any additional
information I can provide for this panic.

[ 156.707054] igc 0000:01:00.0 eth0: NIC Link is Down
[ 156.712981] br-lan: port 1(eth0) entered disabled state
[ 156.719246] igc 0000:01:00.0 eth0: Register Dump
[ 156.724784] igc 0000:01:00.0 eth0: Register Name Value
[ 156.731067] igc 0000:01:00.0 eth0: CTRL 181c0641
[ 156.737607] igc 0000:01:00.0 eth0: STATUS 00380681
[ 156.744133] igc 0000:01:00.0 eth0: CTRL_EXT 100000c0
[ 156.750759] igc 0000:01:00.0 eth0: MDIC 18017949
[ 156.757258] igc 0000:01:00.0 eth0: ICR 00000001
[ 156.763785] igc 0000:01:00.0 eth0: RCTL 0440803a
[ 156.770324] igc 0000:01:00.0 eth0: RDLEN[0-3] 00001000
00001000 00001000 00001000
[ 156.779457] igc 0000:01:00.0 eth0: RDH[0-3] 000000ef
000000a1 00000092 000000ba
[ 156.788500] igc 0000:01:00.0 eth0: RDT[0-3] 000000ee
000000a0 00000091 000000b9
[ 156.797650] igc 0000:01:00.0 eth0: RXDCTL[0-3] 02040808
02040808 02040808 02040808
[ 156.806688] igc 0000:01:00.0 eth0: RDBAL[0-3] 02f43000
02180000 02e7f000 02278000
[ 156.815781] igc 0000:01:00.0 eth0: RDBAH[0-3] 00000001
00000001 00000001 00000001
[ 156.824928] igc 0000:01:00.0 eth0: TCTL a503f0fa
[ 156.831587] igc 0000:01:00.0 eth0: TDBAL[0-3] 02f43000
02180000 02e7f000 02278000
[ 156.840637] igc 0000:01:00.0 eth0: TDBAH[0-3] 00000001
00000001 00000001 00000001
[ 156.849753] igc 0000:01:00.0 eth0: TDLEN[0-3] 00001000
00001000 00001000 00001000
[ 156.858760] igc 0000:01:00.0 eth0: TDH[0-3] 000000d4
0000003d 000000af 0000002a
[ 156.867771] igc 0000:01:00.0 eth0: TDT[0-3] 000000e4
0000005a 000000c8 0000002a
[ 156.876864] igc 0000:01:00.0 eth0: TXDCTL[0-3] 02100108
02100108 02100108 02100108
[ 156.885905] igc 0000:01:00.0 eth0: Reset adapter
[ 160.307195] igc 0000:01:00.0 eth0: NIC Link is Up 1000 Mbps Full
Duplex, Flow Control: RX/TX
[ 160.317974] br-lan: port 1(eth0) entered blocking state
[ 160.324532] br-lan: port 1(eth0) entered forwarding state
[ 161.197263] ------------[ cut here ]------------
[ 161.202669] Kernel BUG at 0xffffffff813ce19f [verbose debug info unavailable]
[ 161.210769] invalid opcode: 0000 [#1] SMP NOPTI
[ 161.216022] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.10.146 #0
[ 161.222980] Hardware name: Default string Default string/Default
string, BIOS 5.19 09/23/2022
[ 161.232546] RIP: 0010:0xffffffff813ce19f
[ 161.237167] Code: 03 01 4c 89 48 58 e9 2f ff ff ff 85 db 41 0f 95
c2 45 39 d9 41 0f 95 c1 45 84 ca 74 05 45 85 e4 78 0a 44 89 c2 e9 10
ff ff ff <0f> 0b 01 d2 45 89 c1 41 29 d1 ba 00 00 00 00 44 0f 48 ca eb
80 cc
[ 161.258651] RSP: 0018:ffffc90000118e88 EFLAGS: 00010283
[ 161.264736] RAX: ffff888101f8f200 RBX: ffffc900006f9bd0 RCX: 000000000000050e
[ 161.272837] RDX: ffff888101fec000 RSI: 0000000000000a1c RDI: 0000000000061a10
[ 161.280942] RBP: ffffc90000118ef8 R08: 0000000000000000 R09: 0000000000061502
[ 161.289089] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffff3f
[ 161.297229] R13: ffff888101f8f140 R14: 0000000000000000 R15: ffff888100ad9b00
[ 161.305345] FS: 0000000000000000(0000) GS:ffff88903fe80000(0000)
knlGS:00000 00000000000
[ 161.314492] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 161.321139] CR2: 00007f941ad43a9b CR3: 000000000340a000 CR4: 0000000000350ee0
[ 161.329284] Call Trace:
[ 161.332373] <IRQ>
[ 161.334981] ? 0xffffffffa0185f78 [igc@00000000f400031b+0x13000]
[ 161.341949] 0xffffffff8185b047
[ 161.345797] 0xffffffff8185b2ca
[ 161.349637] 0xffffffff81e000bb
[ 161.353465] 0xffffffff81c0109f
[ 161.357304] </IRQ>
[ 161.359988] 0xffffffff8102cdac
[ 161.363783] 0xffffffff810bfdaf
[ 161.367584] 0xffffffff81a2e616
[ 161.371374] 0xffffffff81c00c9e
[ 161.375192] RIP: 0010:0xffffffff817e331b
[ 161.379840] Code: 21 90 ff 65 8b 3d 45 23 83 7e e8 80 20 90 ff 31
ff 49 89 c6 e8 26 2d 90 ff 80 7d d7 00 0f 85 9e 01 00 00 fb 66 0f 1f
44 00 00 <45> 85 ff 0f 88 cf 00 00 00 49 63 cf 48 8d 04 49 48 8d 14 81
48 c1
[ 161.401397] RSP: 0018:ffffc900000d3e80 EFLAGS: 00000246
[ 161.407493] RAX: ffff88903fea5180 RBX: ffff88903feadf00 RCX: 000000000000001f
[ 161.415648] RDX: 0000000000000000 RSI: 0000000046ec0743 RDI: 0000000000000000
[ 161.423811] RBP: ffffc900000d3eb8 R08: 00000025881a3b81 R09: ffff888100317340
[ 161.432003] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003
[ 161.440154] R13: ffffffff824c7bc0 R14: 00000025881a3b81 R15: 0000000000000003
[ 161.448285] 0xffffffff817e357f
[ 161.452123] 0xffffffff810e6258
[ 161.455938] 0xffffffff810e63fb
[ 161.459746] 0xffffffff8104bec0
[ 161.463526] 0xffffffff810000f5
[ 161.467290] Modules linked in: pppoe ppp_async nft_fib_inet
nf_flow_table_ipv 6 nf_flow_table_ipv4 nf_flow_table_inet wireguard
pppox ppp_generic nft_reject_i pv6 nft_reject_ipv4 nft_reject_inet
nft_reject nft_redir nft_quota nft_objref nf t_numgen nft_nat nft_masq
nft_log nft_limit nft_hash nft_flow_offload nft_fib_ip v6 nft_fib_ipv4
nft_fib nft_ct nft_counter nft_chain_nat nf_tables nf_nat nf_flo
w_table nf_conntrack libchacha20poly1305 curve25519_x86_64
chacha_x86_64 slhc r8 169 poly1305_x86_64 nfnetlink nf_reject_ipv6
nf_reject_ipv4 nf_log_ipv6 nf_log_i pv4 nf_log_common nf_defrag_ipv6
nf_defrag_ipv4 libcurve25519_generic libcrc32c libchacha igc forcedeth
e1000e crc_ccitt bnx2 i2c_dev ixgbe e1000 amd_xgbe ip6_u dp_tunnel
udp_tunnel mdio nls_utf8 ena kpp nls_iso8859_1 nls_cp437 vfat fat igb
button_hotplug tg3 ptp realtek pps_core mii
[ 161.550507] ---[ end trace b1cb18ab2d1741bd ]---
[ 161.555938] RIP: 0010:0xffffffff813ce19f
[ 161.560634] Code: 03 01 4c 89 48 58 e9 2f ff ff ff 85 db 41 0f 95
c2 45 39 d9 41 0f 95 c1 45 84 ca 74 05 45 85 e4 78 0a 44 89 c2 e9 10
ff ff ff <0f> 0b 01 d2 45 89 c1 41 29 d1 ba 00 00 00 00 44 0f 48 ca eb
80 cc
[ 161.582281] RSP: 0018:ffffc90000118e88 EFLAGS: 00010283
[ 161.588426] RAX: ffff888101f8f200 RBX: ffffc900006f9bd0 RCX: 000000000000050e
[ 161.596668] RDX: ffff888101fec000 RSI: 0000000000000a1c RDI: 0000000000061a10
[ 161.604860] RBP: ffffc90000118ef8 R08: 0000000000000000 R09: 0000000000061502
[ 161.613052] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffff3f
[ 161.621291] R13: ffff888101f8f140 R14: 0000000000000000 R15: ffff888100ad9b00
[ 161.629505] FS: 0000000000000000(0000) GS:ffff88903fe80000(0000)
knlGS:00000 00000000000
[ 161.638781] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 161.645549] CR2: 00007f941ad43a9b CR3: 000000000340a000 CR4: 0000000000350ee0
[ 161.653841] Kernel panic - not syncing: Fatal exception in interrupt
[ 161.661287] Kernel Offset: disabled
[ 161.665644] Rebooting in 3 seconds..
[ 164.670313] ACPI MEMORY or I/O RESET_REG.

Kyle.

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