Kdump fails to generate vmcore on a system with an Intel SRF/SPR/EMR/GNR CPU

Issue

• Kdump fails to generate vmcore on a system with an Intel SRF/SPR/EMR/GNR CPU.

• The kdump kernel crashed due to a divide by zero error in the rebalance_wq_table() function of the module (iaa_crypto).

[   26.145092] idxd: crypto: iaa_crypto now ENABLED
[   26.151960] divide error: 0000 [#1] PREEMPT SMP NOPTI
[   26.218428] CPU: 0 PID: 384 Comm: systemd-udevd Not tainted 5.14.0-427.3.1.el9_4.x86_64 #1
[   26.227764] Hardware name: Intel Corporation AvenueCity/AvenueCity, BIOS xxxxxx.2780.D02.2311070514 11/07/2023
[   26.239626] RIP: 0010:rebalance_wq_table+0x19c/0x240 [iaa_crypto]
[   26.246522] Code: 74 c1 45 31 e4 8b 35 73 ca c7 c2 44 89 e2 48 39 f2 73 4f 48 89 ef e8 a3 5c 11 c1 39 05 5d ca c7 c2 89 c6 76 3d 31 d2 44 89 e0 <f7> 35 e6 b5 00 00 83 fa 01 41 83 d5 00 44 89 ef e8 df f9 ff ff 85
[   26.267647] RSP: 0018:ffa0000000a6bba0 EFLAGS: 00010246
[   26.273568] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   26.281632] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff1100005bffafc0
[   26.289696] RBP: ff1100005bffafc0 R08: 0000000000000001 R09: 0000000000000000
[   26.297760] R10: 0000000000000000 R11: ff1100005bffafc0 R12: 0000000000000000
[   26.305824] R13: 00000000ffffffff R14: 0000000000000000 R15: ff110000577738f0
[   26.313888] FS:  00007f9c7ee1e540(0000) GS:ff1100005ba00000(0000) knlGS:0000000000000000
[   26.323019] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   26.329525] CR2: 0000559273091bc8 CR3: 000000005aae2006 CR4: 0000000000771eb0
[   26.337589] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   26.345654] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
[   26.353717] PKRU: 55555554
[   26.356809] Call Trace:
[   26.359603]  <TASK>
[   26.362012]  ? show_trace_log_lvl+0x1c4/0x2df
[   26.366954]  ? show_trace_log_lvl+0x1c4/0x2df
[   26.371892]  ? iaa_crypto_probe+0xff/0x240 [iaa_crypto]
[   26.377815]  ? __die_body.cold+0x8/0xd
[   26.382070]  ? die+0x2b/0x50
[   26.385357]  ? do_trap+0xce/0x120
[   26.389132]  ? rebalance_wq_table+0x19c/0x240 [iaa_crypto]
[   26.395341]  ? do_error_trap+0x65/0x80
[   26.399595]  ? rebalance_wq_table+0x19c/0x240 [iaa_crypto]
[   26.405803]  ? exc_divide_error+0x36/0x50
[   26.410347]  ? rebalance_wq_table+0x19c/0x240 [iaa_crypto]
[   26.416556]  ? asm_exc_divide_error+0x16/0x20
[   26.421496]  ? rebalance_wq_table+0x19c/0x240 [iaa_crypto]
[   26.427705]  iaa_crypto_probe+0xff/0x240 [iaa_crypto]
[   26.433423]  really_probe+0xde/0x390
[   26.437489]  ? pm_runtime_barrier+0x50/0x90
[   26.442235]  __driver_probe_device+0xd6/0x130
[   26.447172]  driver_probe_device+0x1e/0x90
[   26.451822]  __driver_attach+0xd2/0x1c0
[   26.456172]  ? __pfx___driver_attach+0x10/0x10
[   26.461217]  bus_for_each_dev+0x75/0xd0
[   26.465580]  bus_add_driver+0xc2/0x1f0
[   26.469834]  driver_register+0x70/0xd0
[   26.474089]  ? __pfx_init_module+0x10/0x10 [iaa_crypto]
[   26.480010]  iaa_crypto_init_module+0x15c/0xff0 [iaa_crypto]
[   26.486410]  do_one_initcall+0x41/0x210
[   26.490775]  ? kmalloc_trace+0x25/0xa0
[   26.495031]  do_init_module+0x5c/0x270
[   26.499288]  __do_sys_init_module+0x12e/0x1b0
[   26.504227]  do_syscall_64+0x59/0x90
[   26.508290]  ? handle_mm_fault+0xcd/0x290
[   26.512833]  ? do_user_addr_fault+0x1d6/0x6a0
[   26.517772]  ? exc_page_fault+0x62/0x150
[   26.522230]  entry_SYSCALL_64_after_hwframe+0x72/0xdc
[   26.527947] RIP: 0033:0x7f9c7fa64f1e
[   26.532017] Code: 48 8b 0d 05 af 0e 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d d2 ae 0e 00 f7 d8 64 89 01 48
[   26.553142] RSP: 002b:00007ffd1d68d7c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
[   26.561686] RAX: ffffffffffffffda RBX: 0000559272857c40 RCX: 00007f9c7fa64f1e
[   26.569750] RDX: 00007f9c7fbc632c RSI: 0000000000024d68 RDI: 0000559273070c60
[   26.577814] RBP: 0000559273070c60 R08: 0000559272859570 R09: 0000000000024010
[   26.585877] R10: 0000000000000005 R11: 0000000000000246 R12: 00007f9c7fbc632c
[   26.593942] R13: 0000559272857bd0 R14: 0000000000000007 R15: 000055927285b9b0
[   26.602006]  </TASK>