On 3 x86-64 machines, kernel 4.17.4-200.fc28.x86_64 locked up under
heavy load. 2 of them don't have any kernel messages.  One has

Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: general protection fault: 0000 [#1] SMP PTI
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache devlink ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_hdmi snd_hda_codec_realtek kvm_intel snd_hda_codec_generic snd_hda_intel kvm snd_hda_codec snd_hda_core snd_hwdep irqbypass crct10dif_pclmul crc32_pclmul snd_seq mei_wdt ghash_clmulni_intel snd_seq_device intel_cstate ppdev intel_uncore iTCO_wdt gpio_ich iTCO_vendor_support snd_pcm intel_rapl_perf snd_timer snd mei_me parport_pc joydev i2c_i801 mei soundcore shpchp lpc_ich parport nfsd auth_rpcgss nfs_acl lockd grace sunrpc i915 i2c_algo_bit drm_kms_helper r8169 drm crc32c_intel mii video
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: CPU: 7 PID: 7093 Comm: cc1 Not tainted 4.17.4-200.0.fc28.x86_64 #1
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: Hardware name: Gigabyte Technology Co., Ltd. H87M-D3H/H87M-D3H, BIOS F11 08/18/2015
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RIP: 0010:free_pages_and_swap_cache+0x29/0xb0
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RSP: 0018:ffffb2cd83ffbd58 EFLAGS: 00010202
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RAX: 0017fffe00040068 RBX: ffff93d4abb5ec80 RCX: 0000000000000000
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RDX: 0017fffe00040068 RSI: 00000000000001fe RDI: ffff93d51e3dd2a0
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RBP: 00000000000001fe R08: fffff0809df82d20 R09: ffff93d51e5d5000
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: R10: ffff93d51e5d5e20 R11: ffff93d51e5d5d00 R12: ffff93d4abb5e010
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: R13: fffbf0809e304bc0 R14: ffff93d4abb5f000 R15: ffff93d4cbcee8f0
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: FS:  0000000000000000(0000) GS:ffff93d51e3c0000(0000) knlGS:0000000000000000
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: CR2: 00007ffb255e753c CR3: 00000005e820a002 CR4: 00000000001606e0
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: Call Trace:
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  tlb_flush_mmu_free+0x31/0x50
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  arch_tlb_finish_mmu+0x42/0x70
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  tlb_finish_mmu+0x1f/0x30
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  exit_mmap+0xca/0x190
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  mmput+0x5f/0x130
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  do_exit+0x280/0xae0
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  ? __do_page_fault+0x263/0x4e0
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  do_group_exit+0x3a/0xa0
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  __x64_sys_exit_group+0x14/0x20
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  do_syscall_64+0x65/0x160
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RIP: 0033:0x7ffb2542b3c6
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RSP: 002b:00007ffd9e7e33b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RAX: ffffffffffffffda RBX: 00007ffb2551c740 RCX: 00007ffb2542b3c6
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RBP: 0000000000000000 R08: 00000000000000e7 R09: fffffffffffffe70
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: R10: 00007ffd9e7e3250 R11: 0000000000000246 R12: 00007ffb2551c740
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: R13: 0000000000000037 R14: 00007ffb25525708 R15: 0000000000000000
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: Code: 40 00 0f 1f 44 00 00 41 56 41 55 41 54 49 89 fc 55 89 f5 53 e8 29 99 fb ff 85 ed 7e 6b 8d 45 ff 4c 89 e3 4d 8d 74 c4 08 4c 8b 2b <49> 8b 55 20 48 8d 42 ff 83 e2 01 49 0f 44 c5 48 8b 48 20 48 8d
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: RIP: free_pages_and_swap_cache+0x29/0xb0 RSP: ffffb2cd83ffbd58
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: ---[ end trace 5960277fd8a3c0b5 ]---
Jul 05 14:33:32 gnu-hsw-1.sc.intel.com kernel: Fixing recursive fault but reboot is needed!