[pve-devel] [PATCH kernel] add patch for igc tx timeout issue
Fiona Ebner
f.ebner at proxmox.com
Mon Aug 14 14:59:17 CEST 2023
There were several reports about issues related to igc and tx timeout
and while the issue couldn't be reproduced locally, the hope is that
this fix Friedrich found will resolve the issue for the users. The
kernel versions in the reports would match with when 9b275176270e
("igc: Add ndo_tx_timeout support"), i.e. the one fixed by this
commit, landed.
[0]: https://forum.proxmox.com/threads/130935/
[1]: https://forum.proxmox.com/threads/130415/#post-580064
[2]: https://forum.proxmox.com/threads/132138/
Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
---
My system doesn't use this module, so I couldn't test if anything
breaks.
...Panic-during-ndo_tx_timeout-callback.patch | 384 ++++++++++++++++++
1 file changed, 384 insertions(+)
create mode 100644 patches/kernel/0013-igc-Fix-Kernel-Panic-during-ndo_tx_timeout-callback.patch
diff --git a/patches/kernel/0013-igc-Fix-Kernel-Panic-during-ndo_tx_timeout-callback.patch b/patches/kernel/0013-igc-Fix-Kernel-Panic-during-ndo_tx_timeout-callback.patch
new file mode 100644
index 0000000..43e2269
--- /dev/null
+++ b/patches/kernel/0013-igc-Fix-Kernel-Panic-during-ndo_tx_timeout-callback.patch
@@ -0,0 +1,384 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli at intel.com>
+Date: Mon, 24 Jul 2023 09:12:50 -0700
+Subject: [PATCH] igc: Fix Kernel Panic during ndo_tx_timeout callback
+
+The Xeon validation group has been carrying out some loaded tests
+with various HW configurations, and they have seen some transmit
+queue time out happening during the test. This will cause the
+reset adapter function to be called by igc_tx_timeout().
+Similar race conditions may arise when the interface is being brought
+down and up in igc_reinit_locked(), an interrupt being generated, and
+igc_clean_tx_irq() being called to complete the TX.
+
+When the igc_tx_timeout() function is invoked, this patch will turn
+off all TX ring HW queues during igc_down() process. TX ring HW queues
+will be activated again during the igc_configure_tx_ring() process
+when performing the igc_up() procedure later.
+
+This patch also moved existing igc_disable_tx_ring_hw() to avoid using
+forward declaration.
+
+Kernel trace:
+[ 7678.747813] ------------[ cut here ]------------
+[ 7678.757914] NETDEV WATCHDOG: enp1s0 (igc): transmit queue 2 timed out
+[ 7678.770117] WARNING: CPU: 0 PID: 13 at net/sched/sch_generic.c:525 dev_watchdog+0x1ae/0x1f0
+[ 7678.784459] Modules linked in: xt_conntrack nft_chain_nat xt_MASQUERADE xt_addrtype nft_compat
+nf_tables nfnetlink br_netfilter bridge stp llc overlay dm_mod emrcha(PO) emriio(PO) rktpm(PO)
+cegbuf_mod(PO) patch_update(PO) se(PO) sgx_tgts(PO) mktme(PO) keylocker(PO) svtdx(PO) svfs_pci_hotplug(PO)
+vtd_mod(PO) davemem(PO) svmabort(PO) svindexio(PO) usbx2(PO) ehci_sched(PO) svheartbeat(PO) ioapic(PO)
+sv8259(PO) svintr(PO) lt(PO) pcierootport(PO) enginefw_mod(PO) ata(PO) smbus(PO) spiflash_cdf(PO) arden(PO)
+dsa_iax(PO) oobmsm_punit(PO) cpm(PO) svkdb(PO) ebg_pch(PO) pch(PO) sviotargets(PO) svbdf(PO) svmem(PO)
+svbios(PO) dram(PO) svtsc(PO) targets(PO) superio(PO) svkernel(PO) cswitch(PO) mcf(PO) pentiumIII_mod(PO)
+fs_svfs(PO) mdevdefdb(PO) svfs_os_services(O) ixgbe mdio mdio_devres libphy emeraldrapids_svdefs(PO)
+regsupport(O) libnvdimm nls_cp437 snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel
+snd_intel_dspcfg snd_hda_codec snd_hwdep x86_pkg_temp_thermal snd_hda_core snd_pcm snd_timer isst_if_mbox_pci
+[ 7678.784496] input_leds isst_if_mmio sg snd isst_if_common soundcore wmi button sad9(O) drm fuse backlight
+configfs efivarfs ip_tables x_tables vmd sdhci led_class rtl8150 r8152 hid_generic pegasus mmc_block usbhid
+mmc_core hid megaraid_sas ixgb igb i2c_algo_bit ice i40e hpsa scsi_transport_sas e1000e e1000 e100 ax88179_178a
+usbnet xhci_pci sd_mod xhci_hcd t10_pi crc32c_intel crc64_rocksoft igc crc64 crc_t10dif usbcore
+crct10dif_generic ptp crct10dif_common usb_common pps_core
+[ 7679.200403] RIP: 0010:dev_watchdog+0x1ae/0x1f0
+[ 7679.210201] Code: 28 e9 53 ff ff ff 4c 89 e7 c6 05 06 42 b9 00 01 e8 17 d1 fb ff 44 89 e9 4c
+89 e6 48 c7 c7 40 ad fb 81 48 89 c2 e8 52 62 82 ff <0f> 0b e9 72 ff ff ff 65 8b 05 80 7d 7c 7e
+89 c0 48 0f a3 05 0a c1
+[ 7679.245438] RSP: 0018:ffa00000001f7d90 EFLAGS: 00010282
+[ 7679.256021] RAX: 0000000000000000 RBX: ff11000109938440 RCX: 0000000000000000
+[ 7679.268710] RDX: ff11000361e26cd8 RSI: ff11000361e1b880 RDI: ff11000361e1b880
+[ 7679.281314] RBP: ffa00000001f7da8 R08: ff1100035f8fffe8 R09: 0000000000027ffb
+[ 7679.293840] R10: 0000000000001f0a R11: ff1100035f840000 R12: ff11000109938000
+[ 7679.306276] R13: 0000000000000002 R14: dead000000000122 R15: ffa00000001f7e18
+[ 7679.318648] FS: 0000000000000000(0000) GS:ff11000361e00000(0000) knlGS:0000000000000000
+[ 7679.332064] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[ 7679.342757] CR2: 00007ffff7fca168 CR3: 000000013b08a006 CR4: 0000000000471ef8
+[ 7679.354984] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[ 7679.367207] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
+[ 7679.379370] PKRU: 55555554
+[ 7679.386446] Call Trace:
+[ 7679.393152] <TASK>
+[ 7679.399363] ? __pfx_dev_watchdog+0x10/0x10
+[ 7679.407870] call_timer_fn+0x31/0x110
+[ 7679.415698] expire_timers+0xb2/0x120
+[ 7679.423403] run_timer_softirq+0x179/0x1e0
+[ 7679.431532] ? __schedule+0x2b1/0x820
+[ 7679.439078] __do_softirq+0xd1/0x295
+[ 7679.446426] ? __pfx_smpboot_thread_fn+0x10/0x10
+[ 7679.454867] run_ksoftirqd+0x22/0x30
+[ 7679.462058] smpboot_thread_fn+0xb7/0x160
+[ 7679.469670] kthread+0xcd/0xf0
+[ 7679.476097] ? __pfx_kthread+0x10/0x10
+[ 7679.483211] ret_from_fork+0x29/0x50
+[ 7679.490047] </TASK>
+[ 7679.495204] ---[ end trace 0000000000000000 ]---
+[ 7679.503179] igc 0000:01:00.0 enp1s0: Register Dump
+[ 7679.511230] igc 0000:01:00.0 enp1s0: Register Name Value
+[ 7679.519892] igc 0000:01:00.0 enp1s0: CTRL 181c0641
+[ 7679.528782] igc 0000:01:00.0 enp1s0: STATUS 40280683
+[ 7679.537551] igc 0000:01:00.0 enp1s0: CTRL_EXT 10000040
+[ 7679.546284] igc 0000:01:00.0 enp1s0: MDIC 180a3800
+[ 7679.554942] igc 0000:01:00.0 enp1s0: ICR 00000081
+[ 7679.563503] igc 0000:01:00.0 enp1s0: RCTL 04408022
+[ 7679.571963] igc 0000:01:00.0 enp1s0: RDLEN[0-3] 00001000 00001000 00001000 00001000
+[ 7679.583075] igc 0000:01:00.0 enp1s0: RDH[0-3] 00000068 000000b6 0000000f 00000031
+[ 7679.594162] igc 0000:01:00.0 enp1s0: RDT[0-3] 00000066 000000b2 0000000e 00000030
+[ 7679.605174] igc 0000:01:00.0 enp1s0: RXDCTL[0-3] 02040808 02040808 02040808 02040808
+[ 7679.616196] igc 0000:01:00.0 enp1s0: RDBAL[0-3] 1bb7c000 1bb7f000 1bb82000 0ef33000
+[ 7679.627242] igc 0000:01:00.0 enp1s0: RDBAH[0-3] 00000001 00000001 00000001 00000001
+[ 7679.638256] igc 0000:01:00.0 enp1s0: TCTL a503f0fa
+[ 7679.646607] igc 0000:01:00.0 enp1s0: TDBAL[0-3] 2ba4a000 1bb6f000 1bb74000 1bb79000
+[ 7679.657609] igc 0000:01:00.0 enp1s0: TDBAH[0-3] 00000001 00000001 00000001 00000001
+[ 7679.668551] igc 0000:01:00.0 enp1s0: TDLEN[0-3] 00001000 00001000 00001000 00001000
+[ 7679.679470] igc 0000:01:00.0 enp1s0: TDH[0-3] 000000a7 0000002d 000000bf 000000d9
+[ 7679.690406] igc 0000:01:00.0 enp1s0: TDT[0-3] 000000a7 0000002d 000000bf 000000d9
+[ 7679.701264] igc 0000:01:00.0 enp1s0: TXDCTL[0-3] 02100108 02100108 02100108 02100108
+[ 7679.712123] igc 0000:01:00.0 enp1s0: Reset adapter
+[ 7683.085967] igc 0000:01:00.0 enp1s0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
+[ 8086.945561] ------------[ cut here ]------------
+Entering kdb (current=0xffffffff8220b200, pid 0) on processor 0
+Oops: (null) due to oops @ 0xffffffff81573888
+RIP: 0010:dql_completed+0x148/0x160
+Code: c9 00 48 89 57 58 e9 46 ff ff ff 45 85 e4 41 0f 95 c4 41 39 db 0f 95
+c1 41 84 cc 74 05 45 85 ed 78 0a 44 89 c1 e9 27 ff ff ff <0f> 0b 01 f6 44 89
+c1 29 f1 0f 48 ca eb 8c cc cc cc cc cc cc cc cc
+RSP: 0018:ffa0000000003e00 EFLAGS: 00010287
+RAX: 000000000000006c RBX: ffa0000003eb0f78 RCX: ff11000109938000
+RDX: 0000000000000003 RSI: 0000000000000160 RDI: ff110001002e9480
+RBP: ffa0000000003ed8 R08: ff110001002e93c0 R09: ffa0000000003d28
+R10: 0000000000007cc0 R11: 0000000000007c54 R12: 00000000ffffffd9
+R13: ff1100037039cb00 R14: 00000000ffffffd9 R15: ff1100037039c048
+FS: 0000000000000000(0000) GS:ff11000361e00000(0000) knlGS:0000000000000000
+CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+CR2: 00007ffff7fca168 CR3: 000000013b08a003 CR4: 0000000000471ef8
+DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
+PKRU: 55555554
+Call Trace:
+ <IRQ>
+ ? igc_poll+0x1a9/0x14d0 [igc]
+ __napi_poll+0x2e/0x1b0
+ net_rx_action+0x126/0x250
+ __do_softirq+0xd1/0x295
+ irq_exit_rcu+0xc5/0xf0
+ common_interrupt+0x86/0xa0
+ </IRQ>
+ <TASK>
+ asm_common_interrupt+0x27/0x40
+RIP: 0010:cpuidle_enter_state+0xd3/0x3e0
+Code: 73 f1 ff ff 49 89 c6 8b 05 e2 ca a7 00 85 c0 0f 8f b3 02 00 00 31 ff e8 1b
+de 75 ff 80 7d d7 00 0f 85 cd 01 00 00 fb 45 85 ff <0f> 88 fd 00 00 00 49 63 cf
+4c 2b 75 c8 48 8d 04 49 48 89 ca 48 8d
+RSP: 0018:ffffffff82203df0 EFLAGS: 00000202
+RAX: ff11000361e2a200 RBX: 0000000000000002 RCX: 000000000000001f
+RDX: 0000000000000000 RSI: 000000003cf3cf3d RDI: 0000000000000000
+RBP: ffffffff82203e28 R08: 0000075ae38471c8 R09: 0000000000000018
+R10: 000000000000031a R11: ffffffff8238dca0 R12: ffd1ffffff200000
+R13: ffffffff8238dca0 R14: 0000075ae38471c8 R15: 0000000000000002
+ cpuidle_enter+0x2e/0x50
+ call_cpuidle+0x23/0x40
+ do_idle+0x1be/0x220
+ cpu_startup_entry+0x20/0x30
+ rest_init+0xb5/0xc0
+ arch_call_rest_init+0xe/0x30
+ start_kernel+0x448/0x760
+ x86_64_start_kernel+0x109/0x150
+ secondary_startup_64_no_verify+0xe0/0xeb
+ </TASK>
+more>
+[0]kdb>
+
+[0]kdb>
+[0]kdb> go
+Catastrophic error detected
+kdb_continue_catastrophic=0, type go a second time if you really want to
+continue
+[0]kdb> go
+Catastrophic error detected
+kdb_continue_catastrophic=0, attempting to continue
+[ 8086.955689] refcount_t: underflow; use-after-free.
+[ 8086.955697] WARNING: CPU: 0 PID: 0 at lib/refcount.c:28 refcount_warn_saturate+0xc2/0x110
+[ 8086.955706] Modules linked in: xt_conntrack nft_chain_nat xt_MASQUERADE xt_addrtype nft_compat
+nf_tables nfnetlink br_netfilter bridge stp llc overlay dm_mod emrcha(PO) emriio(PO) rktpm(PO)
+cegbuf_mod(PO) patch_update(PO) se(PO) sgx_tgts(PO) mktme(PO) keylocker(PO) svtdx(PO)
+svfs_pci_hotplug(PO) vtd_mod(PO) davemem(PO) svmabort(PO) svindexio(PO) usbx2(PO) ehci_sched(PO)
+svheartbeat(PO) ioapic(PO) sv8259(PO) svintr(PO) lt(PO) pcierootport(PO) enginefw_mod(PO) ata(PO)
+smbus(PO) spiflash_cdf(PO) arden(PO) dsa_iax(PO) oobmsm_punit(PO) cpm(PO) svkdb(PO) ebg_pch(PO)
+pch(PO) sviotargets(PO) svbdf(PO) svmem(PO) svbios(PO) dram(PO) svtsc(PO) targets(PO) superio(PO)
+svkernel(PO) cswitch(PO) mcf(PO) pentiumIII_mod(PO) fs_svfs(PO) mdevdefdb(PO) svfs_os_services(O)
+ixgbe mdio mdio_devres libphy emeraldrapids_svdefs(PO) regsupport(O) libnvdimm nls_cp437
+snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg
+snd_hda_codec snd_hwdep x86_pkg_temp_thermal snd_hda_core snd_pcm snd_timer isst_if_mbox_pci
+[ 8086.955751] input_leds isst_if_mmio sg snd isst_if_common soundcore wmi button sad9(O) drm
+fuse backlight configfs efivarfs ip_tables x_tables vmd sdhci led_class rtl8150 r8152 hid_generic
+pegasus mmc_block usbhid mmc_core hid megaraid_sas ixgb igb i2c_algo_bit ice i40e hpsa
+scsi_transport_sas e1000e e1000 e100 ax88179_178a usbnet xhci_pci sd_mod xhci_hcd t10_pi
+crc32c_intel crc64_rocksoft igc crc64 crc_t10dif usbcore crct10dif_generic ptp crct10dif_common
+usb_common pps_core
+[ 8086.955784] RIP: 0010:refcount_warn_saturate+0xc2/0x110
+[ 8086.955788] Code: 01 e8 82 e7 b4 ff 0f 0b 5d c3 cc cc cc cc 80 3d 68 c6 eb 00 00 75 81
+48 c7 c7 a0 87 f6 81 c6 05 58 c6 eb 00 01 e8 5e e7 b4 ff <0f> 0b 5d c3 cc cc cc cc 80 3d
+42 c6 eb 00 00 0f 85 59 ff ff ff 48
+[ 8086.955790] RSP: 0018:ffa0000000003da0 EFLAGS: 00010286
+[ 8086.955793] RAX: 0000000000000000 RBX: ff1100011da40ee0 RCX: ff11000361e1b888
+[ 8086.955794] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ff11000361e1b880
+[ 8086.955795] RBP: ffa0000000003da0 R08: 80000000ffff9f45 R09: ffa0000000003d28
+[ 8086.955796] R10: ff1100035f840000 R11: 0000000000000028 R12: ff11000319ff8000
+[ 8086.955797] R13: ff1100011bb79d60 R14: 00000000ffffffd6 R15: ff1100037039cb00
+[ 8086.955798] FS: 0000000000000000(0000) GS:ff11000361e00000(0000) knlGS:0000000000000000
+[ 8086.955800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[ 8086.955801] CR2: 00007ffff7fca168 CR3: 000000013b08a003 CR4: 0000000000471ef8
+[ 8086.955803] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[ 8086.955803] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
+[ 8086.955804] PKRU: 55555554
+[ 8086.955805] Call Trace:
+[ 8086.955806] <IRQ>
+[ 8086.955808] tcp_wfree+0x112/0x130
+[ 8086.955814] skb_release_head_state+0x24/0xa0
+[ 8086.955818] napi_consume_skb+0x9c/0x160
+[ 8086.955821] igc_poll+0x5d8/0x14d0 [igc]
+[ 8086.955835] __napi_poll+0x2e/0x1b0
+[ 8086.955839] net_rx_action+0x126/0x250
+[ 8086.955843] __do_softirq+0xd1/0x295
+[ 8086.955846] irq_exit_rcu+0xc5/0xf0
+[ 8086.955851] common_interrupt+0x86/0xa0
+[ 8086.955857] </IRQ>
+[ 8086.955857] <TASK>
+[ 8086.955858] asm_common_interrupt+0x27/0x40
+[ 8086.955862] RIP: 0010:cpuidle_enter_state+0xd3/0x3e0
+[ 8086.955866] Code: 73 f1 ff ff 49 89 c6 8b 05 e2 ca a7 00 85 c0 0f 8f b3 02 00 00 31 ff e8
+1b de 75 ff 80 7d d7 00 0f 85 cd 01 00 00 fb 45 85 ff <0f> 88 fd 00 00 00 49 63 cf 4c 2b 75
+c8 48 8d 04 49 48 89 ca 48 8d
+[ 8086.955867] RSP: 0018:ffffffff82203df0 EFLAGS: 00000202
+[ 8086.955869] RAX: ff11000361e2a200 RBX: 0000000000000002 RCX: 000000000000001f
+[ 8086.955870] RDX: 0000000000000000 RSI: 000000003cf3cf3d RDI: 0000000000000000
+[ 8086.955871] RBP: ffffffff82203e28 R08: 0000075ae38471c8 R09: 0000000000000018
+[ 8086.955872] R10: 000000000000031a R11: ffffffff8238dca0 R12: ffd1ffffff200000
+[ 8086.955873] R13: ffffffff8238dca0 R14: 0000075ae38471c8 R15: 0000000000000002
+[ 8086.955875] cpuidle_enter+0x2e/0x50
+[ 8086.955880] call_cpuidle+0x23/0x40
+[ 8086.955884] do_idle+0x1be/0x220
+[ 8086.955887] cpu_startup_entry+0x20/0x30
+[ 8086.955889] rest_init+0xb5/0xc0
+[ 8086.955892] arch_call_rest_init+0xe/0x30
+[ 8086.955895] start_kernel+0x448/0x760
+[ 8086.955898] x86_64_start_kernel+0x109/0x150
+[ 8086.955900] secondary_startup_64_no_verify+0xe0/0xeb
+[ 8086.955904] </TASK>
+[ 8086.955904] ---[ end trace 0000000000000000 ]---
+[ 8086.955912] ------------[ cut here ]------------
+[ 8086.955913] kernel BUG at lib/dynamic_queue_limits.c:27!
+[ 8086.955918] invalid opcode: 0000 [#1] SMP
+[ 8086.955922] RIP: 0010:dql_completed+0x148/0x160
+[ 8086.955925] Code: c9 00 48 89 57 58 e9 46 ff ff ff 45 85 e4 41 0f 95 c4 41 39 db
+0f 95 c1 41 84 cc 74 05 45 85 ed 78 0a 44 89 c1 e9 27 ff ff ff <0f> 0b 01 f6 44 89
+c1 29 f1 0f 48 ca eb 8c cc cc cc cc cc cc cc cc
+[ 8086.955927] RSP: 0018:ffa0000000003e00 EFLAGS: 00010287
+[ 8086.955928] RAX: 000000000000006c RBX: ffa0000003eb0f78 RCX: ff11000109938000
+[ 8086.955929] RDX: 0000000000000003 RSI: 0000000000000160 RDI: ff110001002e9480
+[ 8086.955930] RBP: ffa0000000003ed8 R08: ff110001002e93c0 R09: ffa0000000003d28
+[ 8086.955931] R10: 0000000000007cc0 R11: 0000000000007c54 R12: 00000000ffffffd9
+[ 8086.955932] R13: ff1100037039cb00 R14: 00000000ffffffd9 R15: ff1100037039c048
+[ 8086.955933] FS: 0000000000000000(0000) GS:ff11000361e00000(0000) knlGS:0000000000000000
+[ 8086.955934] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
+[ 8086.955935] CR2: 00007ffff7fca168 CR3: 000000013b08a003 CR4: 0000000000471ef8
+[ 8086.955936] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
+[ 8086.955937] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
+[ 8086.955938] PKRU: 55555554
+[ 8086.955939] Call Trace:
+[ 8086.955939] <IRQ>
+[ 8086.955940] ? igc_poll+0x1a9/0x14d0 [igc]
+[ 8086.955949] __napi_poll+0x2e/0x1b0
+[ 8086.955952] net_rx_action+0x126/0x250
+[ 8086.955956] __do_softirq+0xd1/0x295
+[ 8086.955958] irq_exit_rcu+0xc5/0xf0
+[ 8086.955961] common_interrupt+0x86/0xa0
+[ 8086.955964] </IRQ>
+[ 8086.955965] <TASK>
+[ 8086.955965] asm_common_interrupt+0x27/0x40
+[ 8086.955968] RIP: 0010:cpuidle_enter_state+0xd3/0x3e0
+[ 8086.955971] Code: 73 f1 ff ff 49 89 c6 8b 05 e2 ca a7 00 85 c0 0f 8f b3 02 00 00
+31 ff e8 1b de 75 ff 80 7d d7 00 0f 85 cd 01 00 00 fb 45 85 ff <0f> 88 fd 00 00 00
+49 63 cf 4c 2b 75 c8 48 8d 04 49 48 89 ca 48 8d
+[ 8086.955972] RSP: 0018:ffffffff82203df0 EFLAGS: 00000202
+[ 8086.955973] RAX: ff11000361e2a200 RBX: 0000000000000002 RCX: 000000000000001f
+[ 8086.955974] RDX: 0000000000000000 RSI: 000000003cf3cf3d RDI: 0000000000000000
+[ 8086.955974] RBP: ffffffff82203e28 R08: 0000075ae38471c8 R09: 0000000000000018
+[ 8086.955975] R10: 000000000000031a R11: ffffffff8238dca0 R12: ffd1ffffff200000
+[ 8086.955976] R13: ffffffff8238dca0 R14: 0000075ae38471c8 R15: 0000000000000002
+[ 8086.955978] cpuidle_enter+0x2e/0x50
+[ 8086.955981] call_cpuidle+0x23/0x40
+[ 8086.955984] do_idle+0x1be/0x220
+[ 8086.955985] cpu_startup_entry+0x20/0x30
+[ 8086.955987] rest_init+0xb5/0xc0
+[ 8086.955990] arch_call_rest_init+0xe/0x30
+[ 8086.955992] start_kernel+0x448/0x760
+[ 8086.955994] x86_64_start_kernel+0x109/0x150
+[ 8086.955996] secondary_startup_64_no_verify+0xe0/0xeb
+[ 8086.955998] </TASK>
+[ 8086.955999] Modules linked in: xt_conntrack nft_chain_nat xt_MASQUERADE xt_addrtype
+nft_compat nf_tables nfnetlink br_netfilter bridge stp llc overlay dm_mod emrcha(PO) emriio(PO)
+rktpm(PO) cegbuf_mod(PO) patch_update(PO) se(PO) sgx_tgts(PO) mktme(PO) keylocker(PO) svtdx(PO)
+svfs_pci_hotplug(PO) vtd_mod(PO) davemem(PO) svmabort(PO) svindexio(PO) usbx2(PO) ehci_sched(PO)
+svheartbeat(PO) ioapic(PO) sv8259(PO) svintr(PO) lt(PO) pcierootport(PO) enginefw_mod(PO) ata(PO)
+smbus(PO) spiflash_cdf(PO) arden(PO) dsa_iax(PO) oobmsm_punit(PO) cpm(PO) svkdb(PO) ebg_pch(PO)
+pch(PO) sviotargets(PO) svbdf(PO) svmem(PO) svbios(PO) dram(PO) svtsc(PO) targets(PO) superio(PO)
+svkernel(PO) cswitch(PO) mcf(PO) pentiumIII_mod(PO) fs_svfs(PO) mdevdefdb(PO) svfs_os_services(O)
+ixgbe mdio mdio_devres libphy emeraldrapids_svdefs(PO) regsupport(O) libnvdimm nls_cp437
+snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg
+snd_hda_codec snd_hwdep x86_pkg_temp_thermal snd_hda_core snd_pcm snd_timer isst_if_mbox_pci
+[ 8086.956029] input_leds isst_if_mmio sg snd isst_if_common soundcore wmi button sad9(O) drm
+fuse backlight configfs efivarfs ip_tables x_tables vmd sdhci led_class rtl8150 r8152 hid_generic
+pegasus mmc_block usbhid mmc_core hid megaraid_sas ixgb igb i2c_algo_bit ice i40e hpsa
+scsi_transport_sas e1000e e1000 e100 ax88179_178a usbnet xhci_pci sd_mod xhci_hcd t10_pi
+crc32c_intel crc64_rocksoft igc crc64 crc_t10dif usbcore crct10dif_generic ptp crct10dif_common
+usb_common pps_core
+[16762.543675] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.593 msecs
+[16762.543678] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.595 msecs
+[16762.543673] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.495 msecs
+[16762.543679] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.599 msecs
+[16762.543678] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.598 msecs
+[16762.543690] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.605 msecs
+[16762.543684] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.599 msecs
+[16762.543693] INFO: NMI handler (kgdb_nmi_handler) took too long to run: 8675587.613 msecs
+[16762.543784] ---[ end trace 0000000000000000 ]---
+[16762.849099] RIP: 0010:dql_completed+0x148/0x160
+PANIC: Fatal exception in interrupt
+
+Fixes: 9b275176270e ("igc: Add ndo_tx_timeout support")
+Tested-by: Alejandra Victoria Alcaraz <alejandra.victoria.alcaraz at intel.com>
+Signed-off-by: Muhammad Husaini Zulkifli <muhammad.husaini.zulkifli at intel.com>
+Acked-by: Sasha Neftin <sasha.neftin at intel.com>
+Tested-by: Naama Meir <naamax.meir at linux.intel.com>
+Signed-off-by: Tony Nguyen <anthony.l.nguyen at intel.com>
+Reviewed-by: Simon Horman <simon.horman at corigine.com>
+Signed-off-by: David S. Miller <davem at davemloft.net>
+(cherry-picked from commit d4a7ce642100765119a872d4aba1bf63e3a22c8a)
+Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
+---
+ drivers/net/ethernet/intel/igc/igc_main.c | 40 ++++++++++++++++-------
+ 1 file changed, 28 insertions(+), 12 deletions(-)
+
+diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
+index 8b554311518c..a3f89e1dca72 100644
+--- a/drivers/net/ethernet/intel/igc/igc_main.c
++++ b/drivers/net/ethernet/intel/igc/igc_main.c
+@@ -310,6 +310,33 @@ static void igc_clean_all_tx_rings(struct igc_adapter *adapter)
+ igc_clean_tx_ring(adapter->tx_ring[i]);
+ }
+
++static void igc_disable_tx_ring_hw(struct igc_ring *ring)
++{
++ struct igc_hw *hw = &ring->q_vector->adapter->hw;
++ u8 idx = ring->reg_idx;
++ u32 txdctl;
++
++ txdctl = rd32(IGC_TXDCTL(idx));
++ txdctl &= ~IGC_TXDCTL_QUEUE_ENABLE;
++ txdctl |= IGC_TXDCTL_SWFLUSH;
++ wr32(IGC_TXDCTL(idx), txdctl);
++}
++
++/**
++ * igc_disable_all_tx_rings_hw - Disable all transmit queue operation
++ * @adapter: board private structure
++ */
++static void igc_disable_all_tx_rings_hw(struct igc_adapter *adapter)
++{
++ int i;
++
++ for (i = 0; i < adapter->num_tx_queues; i++) {
++ struct igc_ring *tx_ring = adapter->tx_ring[i];
++
++ igc_disable_tx_ring_hw(tx_ring);
++ }
++}
++
+ /**
+ * igc_setup_tx_resources - allocate Tx resources (Descriptors)
+ * @tx_ring: tx descriptor ring (for a specific queue) to setup
+@@ -4993,6 +5020,7 @@ void igc_down(struct igc_adapter *adapter)
+ /* clear VLAN promisc flag so VFTA will be updated if necessary */
+ adapter->flags &= ~IGC_FLAG_VLAN_PROMISC;
+
++ igc_disable_all_tx_rings_hw(adapter);
+ igc_clean_all_tx_rings(adapter);
+ igc_clean_all_rx_rings(adapter);
+ }
+@@ -7094,18 +7122,6 @@ void igc_enable_rx_ring(struct igc_ring *ring)
+ igc_alloc_rx_buffers(ring, igc_desc_unused(ring));
+ }
+
+-static void igc_disable_tx_ring_hw(struct igc_ring *ring)
+-{
+- struct igc_hw *hw = &ring->q_vector->adapter->hw;
+- u8 idx = ring->reg_idx;
+- u32 txdctl;
+-
+- txdctl = rd32(IGC_TXDCTL(idx));
+- txdctl &= ~IGC_TXDCTL_QUEUE_ENABLE;
+- txdctl |= IGC_TXDCTL_SWFLUSH;
+- wr32(IGC_TXDCTL(idx), txdctl);
+-}
+-
+ void igc_disable_tx_ring(struct igc_ring *ring)
+ {
+ igc_disable_tx_ring_hw(ring);
--
2.39.2
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