Kdump fails to generate vmcore if system is using third party Qlogic FastLinQ Ethernet controller driver and panics on arch/x86/kernel/apic/io_apic.c:1358 while testing using sysrq.

Issue

• Kdump fails to generate vmcore if system is using third party Qlogic FastLinQ Ethernet controller driver and panics on arch/x86/kernel/apic/io_apic.c:1358 while testing using sysrq.

[    4.312732] ------------[ cut here ]------------
[    4.317348] kernel BUG at arch/x86/kernel/apic/io_apic.c:1358!
[    4.323178] invalid opcode: 0000 [#1] SMP
[    4.327323] Modules linked in: qede(OE+) qed(OE) ptp pps_core mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm i2c_core ahci libahci libata dm_multipath dm_mirror dm_region_hash dm_log dm_mod
[    4.348446] CPU: 0 PID: 202 Comm: systemd-udevd Tainted: G           OE  ------------   3.10.0-693.21.1.el7.x86_64 #1
[    4.359045] Hardware name: Dell Inc. PowerEdge R740/00WGD1, BIOS 1.4.9 06/29/2018
[    4.366524] task: ffff88006a464f10 ti: ffff88006a7ac000 task.ti: ffff88006a7ac000
[    4.374003] RIP: 0010:[<ffffffff8105753d>]  [<ffffffff8105753d>] __clear_irq_vector+0x9d/0x100
[    4.382633] RSP: 0000:ffff88006a7af868  EFLAGS: 00010046
[    4.387944] RAX: 0000000000000246 RBX: 00000000000000d4 RCX: 00000000fffffffa
[    4.395075] RDX: 0000000000000001 RSI: ffff88005ef59f60 RDI: 00000000000000d4
[    4.402207] RBP: ffff88006a7af890 R08: 0000000000000000 R09: ffff8800650bdda8
[    4.409340] R10: 0000000000000000 R11: ffffea0001a5de40 R12: ffff88005ef59f60
[    4.416474] R13: 0000000000000000 R14: 0000000000000002 R15: ffff88005ef59f60
[    4.423605] FS:  00007fa7cbc018c0(0000) GS:ffff88006bc00000(0000) knlGS:0000000000000000
[    4.431691] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    4.437436] CR2: 00005596ba3bc028 CR3: 000000006a7aa000 CR4: 00000000003607b0
[    4.444564] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    4.451696] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    4.458831] Call Trace:
[    4.461286]  [<ffffffff8105922e>] arch_teardown_hwirq+0x3e/0x70
[    4.467207]  [<ffffffff8105a242>] mp_irqdomain_unmap+0xc2/0x110
[    4.473129]  [<ffffffff81138eea>] irq_domain_disassociate_many+0xaa/0x130
[    4.479918]  [<ffffffff8113933c>] irq_dispose_mapping+0x3c/0x60
[    4.485840]  [<ffffffff8105a311>] mp_unmap_irq+0x81/0xb0
[    4.491157]  [<ffffffff8104fa51>] acpi_unregister_gsi_ioapic+0x31/0x40
[    4.497684]  [<ffffffff8104f95a>] acpi_unregister_gsi+0x1a/0x20
[    4.503607]  [<ffffffff813b401b>] acpi_pci_irq_disable+0xb6/0xc6
[    4.509618]  [<ffffffff8156bf13>] pcibios_disable_device+0x23/0x30
[    4.515798]  [<ffffffff8136dd76>] do_pci_disable_device+0x56/0x80
[    4.521893]  [<ffffffff8136dde8>] pci_disable_device+0x48/0x90
[    4.527734]  [<ffffffffc016d500>] qed_free_pci+0x60/0x70 [qed]     <<=---
[    4.533569]  [<ffffffffc016d7ef>] qed_remove+0x1f/0x40 [qed]       <<=---
[    4.539231]  [<ffffffffc0236b36>] __qede_probe+0x596/0xb50 [qede]  <<=---
[    4.545324]  [<ffffffff81286405>] ? sysfs_link_sibling+0xb5/0xe0
[    4.551333]  [<ffffffff81286d52>] ? sysfs_addrm_finish+0x42/0xe0
[    4.557341]  [<ffffffff81286b81>] ? __sysfs_add_one+0x61/0x100
[    4.563179]  [<ffffffffc023751f>] qede_probe+0x3f/0xb0 [qede]      <<=---
[    4.568927]  [<ffffffff81370cea>] local_pci_probe+0x4a/0xb0
[    4.574495]  [<ffffffff813723e9>] pci_device_probe+0x109/0x160
[    4.580334]  [<ffffffff81447a55>] driver_probe_device+0xc5/0x3e0
[    4.586341]  [<ffffffff81447e53>] __driver_attach+0x93/0xa0
[    4.591917]  [<ffffffff81447dc0>] ? __device_attach+0x50/0x50
[    4.598273]  [<ffffffff81445605>] bus_for_each_dev+0x75/0xc0
[    4.604517]  [<ffffffff814473ce>] driver_attach+0x1e/0x20
[    4.610493]  [<ffffffff81446e70>] bus_add_driver+0x200/0x2d0
[    4.616726]  [<ffffffff814484e4>] driver_register+0x64/0xf0
[    4.622869]  [<ffffffff81371c25>] __pci_register_driver+0xa5/0xc0
[    4.629525]  [<ffffffffc0252000>] ? 0xffffffffc0251fff
[    4.635229]  [<ffffffffc02520d9>] qede_init+0xd9/0x1000 [qede]      <<=---
[    4.641611]  [<ffffffff810020ea>] do_one_initcall+0xba/0x240
[    4.647800]  [<ffffffff81104414>] load_module+0x1f84/0x2a10
[    4.653891]  [<ffffffff813521b0>] ? ddebug_proc_write+0xf0/0xf0
[    4.660309]  [<ffffffff81100a73>] ? copy_module_from_fd.isra.42+0x53/0x150
[    4.667680]  [<ffffffff81105056>] SyS_finit_module+0xa6/0xd0
[    4.673828]  [<ffffffff816c0715>] system_call_fastpath+0x1c/0x21
[    4.680310] Code: 3f 49 8b 7f 08 31 f6 48 c1 fa 03 41 c6 47 18 00 48 83 e2 f8 e8 05 07 2e 00 41 f6 47 19 01 75 0d 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b b8 ff ff ff ff 48 c7 c3 20 06 01 00 49 8b 77 10 4c 89 e2
[    4.701784] RIP  [<ffffffff8105753d>] __clear_irq_vector+0x9d/0x100
[    4.708587]  RSP <ffff88006a7af868>
[    4.712588] ---[ end trace 364369960661b0fe ]---
[    4.720708] Kernel panic - not syncing: Fatal exception