Hi folks. I am observed kernel panic after updated to git commit 610cd4eadec4. I am did not make git bisect because this crashes occurs spontaneously and I not have exactly instruction how reproduce it. Hope backtrace below could help understand how fix it: page:ffffef46607ce000 is uninitialized and poisoned raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff raw: ffffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffff page dumped because: VM_BUG_ON_PAGE(PagePoisoned(p)) ------------[ cut here ]------------ kernel BUG at include/linux/mm.h:1020! invalid opcode: 0000 [#1] SMP NOPTI CPU: 1 PID: 118 Comm: kswapd0 Tainted: G C 5.1.0-0.rc0.git4.1.fc31.x86_64 #1 Hardware name: System manufacturer System Product Name/ROG STRIX X470-I GAMING, BIOS 1201 12/07/2018 RIP: 0010:__reset_isolation_pfn+0x244/0x2b0 Code: fe 06 e8 cf 8d fc ff 44 0f b6 4c 24 04 48 85 c0 0f 85 dc fe ff ff e9 68 fe ff ff 48 c7 c6 70 cd 2e 8c 4c 89 ff e8 ec 74 00 00 <0f> 0b 48 c7 c6 70 cd 2e 8c e8 de 74 00 00 0f 0b 48 89 fa 41 b8 01 RSP: 0018:ffffbe2d43f1fde8 EFLAGS: 00010246 RAX: 0000000000000034 RBX: 000000000081f380 RCX: ffff9a1e3cfd6c20 RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff9a1e3cfd6c20 RBP: 0000000000000001 R08: 000004bdd8f302a3 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000100000 R13: 0000000000100000 R14: 0000000000000001 R15: ffffef46607ce000 FS: 0000000000000000(0000) GS:ffff9a1e3ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000038d164286000 CR3: 000000056c4ca000 CR4: 00000000003406e0 Call Trace: __reset_isolation_suitable+0x62/0x120 reset_isolation_suitable+0x3b/0x40 kswapd+0x147/0x540 ? finish_wait+0x90/0x90 kthread+0x108/0x140 ? balance_pgdat+0x560/0x560 ? kthread_park+0x90/0x90 ret_from_fork+0x27/0x50 Modules linked in: macvtap macvlan tap uinput fuse rfcomm ipt_MASQUERADE tun bridge stp llc xt_conntrack nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ebtable_nat iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c cmac ip_set nfnetlink ebtable_filter ebtables bnep sunrpc vfat fat edac_mce_amd arc4 kvm_amd kvm r8822be(C) irqbypass uvcvideo eeepc_wmi asus_wmi videobuf2_vmalloc joydev sparse_keymap videobuf2_memops video snd_hda_codec_realtek wmi_bmof videobuf2_v4l2 mac80211 snd_hda_codec_generic videobuf2_common ledtrig_audio videodev snd_hda_codec_hdmi crct10dif_pclmul crc32_pclmul snd_usb_audio media snd_hda_intel snd_hda_codec snd_usbmidi_lib btusb snd_rawmidi btrtl snd_hda_core btbcm ghash_clmulni_intel btintel snd_hwdep bluetooth snd_seq snd_seq_device cfg80211 k10temp snd_pcm ecdh_generic rfkill snd_timer snd sp5100_tco soundcore ccp i2c_piix4 pcc_cpufreq gpio_amdpt gpio_generic acpi_cpufreq binfmt_misc hid_sony ff_memless amdgpu hid_logitech_hidpp chash amd_iommu_v2 gpu_sched ttm drm_kms_helper drm crc32c_intel igb nvme dca i2c_algo_bit hid_logitech_dj nvme_core wmi pinctrl_amd ---[ end trace 44c9a3d09c80c5ae ]--- RIP: 0010:__reset_isolation_pfn+0x244/0x2b0 Code: fe 06 e8 cf 8d fc ff 44 0f b6 4c 24 04 48 85 c0 0f 85 dc fe ff ff e9 68 fe ff ff 48 c7 c6 70 cd 2e 8c 4c 89 ff e8 ec 74 00 00 <0f> 0b 48 c7 c6 70 cd 2e 8c e8 de 74 00 00 0f 0b 48 89 fa 41 b8 01 RSP: 0018:ffffbe2d43f1fde8 EFLAGS: 00010246 RAX: 0000000000000034 RBX: 000000000081f380 RCX: ffff9a1e3cfd6c20 RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff9a1e3cfd6c20 RBP: 0000000000000001 R08: 000004bdd8f302a3 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000100000 R13: 0000000000100000 R14: 0000000000000001 R15: ffffef46607ce000 FS: 0000000000000000(0000) GS:ffff9a1e3ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000038d164286000 CR3: 000000056c4ca000 CR4: 00000000003406e0 ------------[ cut here ]------------ do not call blocking ops when !TASK_RUNNING; state=1 set at [<0000000088e85547>] prepare_to_wait+0x3a/0xc0 WARNING: CPU: 1 PID: 118 at kernel/sched/core.c:6136 __might_sleep+0x6c/0x70 Modules linked in: macvtap macvlan tap uinput fuse rfcomm ipt_MASQUERADE tun bridge stp llc xt_conntrack nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ebtable_nat iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c cmac ip_set nfnetlink ebtable_filter ebtables bnep sunrpc vfat fat edac_mce_amd arc4 kvm_amd kvm r8822be(C) irqbypass uvcvideo eeepc_wmi asus_wmi videobuf2_vmalloc joydev sparse_keymap videobuf2_memops video snd_hda_codec_realtek wmi_bmof videobuf2_v4l2 mac80211 snd_hda_codec_generic videobuf2_common ledtrig_audio videodev snd_hda_codec_hdmi crct10dif_pclmul crc32_pclmul snd_usb_audio media snd_hda_intel snd_hda_codec snd_usbmidi_lib btusb snd_rawmidi btrtl snd_hda_core btbcm ghash_clmulni_intel btintel snd_hwdep bluetooth snd_seq snd_seq_device cfg80211 k10temp snd_pcm ecdh_generic rfkill snd_timer snd sp5100_tco soundcore ccp i2c_piix4 pcc_cpufreq gpio_amdpt gpio_generic acpi_cpufreq binfmt_misc hid_sony ff_memless amdgpu hid_logitech_hidpp chash amd_iommu_v2 gpu_sched ttm drm_kms_helper drm crc32c_intel igb nvme dca i2c_algo_bit hid_logitech_dj nvme_core wmi pinctrl_amd CPU: 1 PID: 118 Comm: kswapd0 Tainted: G D C 5.1.0-0.rc0.git4.1.fc31.x86_64 #1 Hardware name: System manufacturer System Product Name/ROG STRIX X470-I GAMING, BIOS 1201 12/07/2018 RIP: 0010:__might_sleep+0x6c/0x70 Code: 41 5c 41 5d e9 35 fe ff ff 48 8b 90 48 2e 00 00 48 8b 70 10 48 c7 c7 80 73 2f 8c c6 05 b5 ea 7c 01 01 48 89 d1 e8 fd be fc ff <0f> 0b eb c8 0f 1f 44 00 00 48 8b 87 a0 0a 00 00 8b 97 08 0b 00 00 RSP: 0018:ffffbe2d43f1fea0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff9a1e2f47b2c0 RCX: ffff9a1e3cfd6c20 RDX: 0000000000000007 RSI: 0000000000000006 RDI: ffff9a1e3cfd6c20 RBP: ffffffff8c2f1eae R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000022 R13: 0000000000000000 R14: ffff9a1e2f47b2c0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff9a1e3ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000038d164286000 CR3: 000000056c4ca000 CR4: 00000000003406e0 Call Trace: exit_signals+0x30/0x240 ? finish_wait+0x90/0x90 do_exit+0xbc/0xd20 ? kthread+0x108/0x140 rewind_stack_do_exit+0x17/0x20 irq event stamp: 18264061 hardirqs last enabled at (18264061): [<ffffffff8b02b87a>] do_error_trap+0xda/0x120 hardirqs last disabled at (18264060): [<ffffffff8b0037fa>] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (18263974): [<ffffffff8be0035f>] __do_softirq+0x35f/0x46a softirqs last disabled at (18263967): [<ffffffff8b0eddb2>] irq_exit+0x102/0x110 ---[ end trace 44c9a3d09c80c5af ]--- ------------[ cut here ]------------ kernel BUG at kernel/sched/core.c:3536! Thanks. -- Best Regards, Mike Gavrilov.
