stress-ng -f test panics (cpu-hotplug related)

[ampresent]

Run

stress-ng -f 100 &
rpm -ivh scheduler-xxx.rpm
rpm -e scheduler-xxx

panic log

[  274.517475] BUG: unable to handle kernel paging request at ffffffffc017eff0
[  274.532598] PGD 220c067 P4D 220c067 PUD 220e067 PMD 413235067 PTE 0
[  274.534652] Oops: 0000 [#1] SMP PTI
[  274.535794] CPU: 27 PID: 96953 Comm: stress-ng Tainted: G           OE     4.19.91-22.fc.1.al7.x86_64 #1
[  274.538824] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org 04/01/2014
[  274.548427] RIP: 0010:sched_move_task+0x19b/0x1d0
[  274.550103] Code: fe ff ff 48 8b 43 78 48 89 de 48 89 ef 48 8b 40 38 e8 59 04 b4 00 e9 c1 fe ff ff 48 8b 43 78 ba 0e 00 00 00 48 89 de 48 89 ef <48> 8b 40 10 e8 3c 04 b4 00 e9 9b fe ff ff f6 83 74 07 00 00 02 0f
[  274.556980] RSP: 0018:ffffc900155c7e90 EFLAGS: 00010046
[  274.558951] RAX: ffffffffc017efe0 RBX: ffff8883cfa78000 RCX: ffff8884170d6240
[  274.561633] RDX: 000000000000000e RSI: ffff8883cfa78000 RDI: ffff8884170e2880
[  274.564279] RBP: ffff8884170e2880 R08: 00000000ccd85b9c R09: 000000000000b67e
[  274.566685] R10: ffff888416406e80 R11: 0000000000000003 R12: 0000000000000001
[  274.569227] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
[  274.571608] FS:  00007f196250a780(0000) GS:ffff8884170c0000(0000) knlGS:0000000000000000
[  274.574629] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.576771] CR2: ffffffffc017eff0 CR3: 00000003f8266006 CR4: 00000000003606e0
[  274.578987] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  274.581012] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  274.583103] Call Trace:
[  274.583831]  autogroup_move_group+0x6e/0x100
[  274.585084]  sched_autogroup_create_attach+0x9d/0x120
[  274.586576]  ksys_setsid+0xe7/0x100
[  274.587596]  __ia32_sys_setsid+0xa/0x10
[  274.588649]  do_syscall_64+0x5b/0x1b0
[  274.589635]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  274.591059] RIP: 0033:0x7f1961cf2107
[  274.592122] Code: 73 01 c3 48 8b 0d 69 fd 2f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 70 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 39 fd 2f 00 f7 d8 64 89 01 48
[  274.597320] RSP: 002b:00007fff94867e58 EFLAGS: 00000202 ORIG_RAX: 0000000000000070
[  274.599403] RAX: ffffffffffffffda RBX: 00007fff94867fe0 RCX: 00007f1961cf2107
[  274.601370] RDX: 0000000000017ab9 RSI: 00007f19611cb270 RDI: 0000000000017ab9
[  274.603343] RBP: 0000000000017ab9 R08: 00007f19611cb270 R09: 0000000000000c19
[  274.605331] R10: 00007fff94867260 R11: 0000000000000202 R12: 0000000000000b69
[  274.607280] R13: 00000000ffffffff R14: 0000000000006f05 R15: 0000000000000000
[  274.609221] Modules linked in: mousedev intel_rapl_msr intel_rapl_common iosf_mbi isst_if_common bochs_drm ttm drm_kms_helper nfit syscopyarea crct10dif_pclmul sysfillrect crc32_pclmul sysimgblt ppdev fb_sys_fops ghash_clmulni_intel pcbc aesni_intel drm pcc_cpufreq i2c_piix4 psmouse cry]
[  274.620840] CR2: ffffffffc017eff0
[  274.621777] ---[ end trace 36d3149ec91e6eac ]---
[  274.623082] RIP: 0010:sched_move_task+0x19b/0x1d0
[  274.624418] Code: fe ff ff 48 8b 43 78 48 89 de 48 89 ef 48 8b 40 38 e8 59 04 b4 00 e9 c1 fe ff ff 48 8b 43 78 ba 0e 00 00 00 48 89 de 48 89 ef <48> 8b 40 10 e8 3c 04 b4 00 e9 9b fe ff ff f6 83 74 07 00 00 02 0f
[  274.632021] RSP: 0018:ffffc900155c7e90 EFLAGS: 00010046
[  274.634776] RAX: ffffffffc017efe0 RBX: ffff8883cfa78000 RCX: ffff8884170d6240
[  274.638122] RDX: 000000000000000e RSI: ffff8883cfa78000 RDI: ffff8884170e2880
[  274.641421] RBP: ffff8884170e2880 R08: 00000000ccd85b9c R09: 000000000000b67e
[  274.644702] R10: ffff888416406e80 R11: 0000000000000003 R12: 0000000000000001
[  274.647973] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
[  274.651237] FS:  00007f196250a780(0000) GS:ffff8884170c0000(0000) knlGS:0000000000000000
[  274.654664] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  274.657563] CR2: ffffffffc017eff0 CR3: 00000003f8266006 CR4: 00000000003606e0
[  274.660806] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  274.664017] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  274.667172] Kernel panic - not syncing: Fatal exception
[  274.672843] Kernel Offset: disabled
[  274.674440] Rebooting in 1 seconds..
SeaBIOS (version rel-1.13.0-48-gd9c812dda519-prebuilt.qemu.org)