همم. أميل إلى الموافقة، باستثناء أخطاء النواة (kernel errors) التي بدأت أولاً. كانت الآلة الافتراضية تعمل منذ 06/يوليو دون أي خطأ في النواة (kernel oops) حتى هذا الصباح. إليك المخرجات الكاملة لتلك اللحظة. لاحظ تفاصيل page_fault_oops و handle_mm_fault و xfs_filemap_map_pages:
Jul 22 05:00:22 myvm kernel: BUG: kernel NULL pointer dereference, address: 0000000000000002
Jul 22 05:00:22 myvm kernel: #PF: supervisor read access in kernel mode
Jul 22 05:00:22 myvm kernel: #PF: error_code(0x0000) - not-present page
Jul 22 05:00:22 myvm kernel: Oops: 0000 [#1] PREEMPT SMP NOPTI
Jul 22 05:00:22 myvm kernel: CPU: 3 PID: 3235204 Comm: postmaster Not tainted 6.1.0-10-amd64 #1 Debian 6.1.37-1
Jul 22 05:00:22 myvm kernel: Hardware name: Hetzner vServer/Standard PC (Q35 + ICH9, 2009), BIOS 20171111 11/11/2017
Jul 22 05:00:22 myvm kernel: RIP: 0010:next_uptodate_page+0x45/0x1f0
Jul 22 05:00:22 myvm kernel: Code: 0f 84 2f 01 00 00 48 81 ff 06 04 00 00 0f 84 a3 00 00 00 48 81 ff 02 04 00 00 0f 84 26 01 00 00 40 f6 c7 01 0f 85 8c 00 00 00 <48> 8b 07 a8 01 0f 85 81 00 00 00 8b 47 34 85 c0 74 7a 8d 50 01 4c
Jul 22 05:00:22 myvm kernel: RSP: 0000:ffffc1ae8274bcc0 EFLAGS: 00010246
Jul 22 05:00:22 myvm kernel: RAX: 0000000000000002 RBX: ffffc1ae8274bd18 RCX: 000000000000005e
Jul 22 05:00:22 myvm kernel: RDX: ffffc1ae8274bd18 RSI: ffffa0210863d2b0 RDI: 0000000000000002
Jul 22 05:00:22 myvm kernel: RBP: ffffa0210863d2b0 R08: 000000000000005e R09: 000055fb22bbdfff
Jul 22 05:00:22 myvm kernel: R10: 000000000000004f R11: 0000000000000000 R12: 000000000000005e
Jul 22 05:00:22 myvm kernel: R13: ffffa02194ad6980 R14: ffffa0210863d2b0 R15: ffffa02118538f60
Jul 22 05:00:22 myvm kernel: FS: 00007f423625fa40(0000) GS:ffffa0226bf80000(0000) knlGS:0000000000000000
Jul 22 05:00:22 myvm kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 22 05:00:22 myvm kernel: CR2: 0000000000000002 CR3: 000000010d87e000 CR4: 0000000000350ee0
Jul 22 05:00:22 myvm kernel: Call Trace:
Jul 22 05:00:22 myvm kernel: <TASK>
Jul 22 05:00:22 myvm kernel: ? __die_body.cold+0x1a/0x1f
Jul 22 05:00:22 myvm kernel: ? page_fault_oops+0xd2/0x2b0
Jul 22 05:00:22 myvm kernel: ? finish_task_switch.isra.0+0x9b/0x300
Jul 22 05:00:22 myvm kernel: ? exc_page_fault+0x70/0x170
Jul 22 05:00:22 myvm kernel: ? asm_exc_page_fault+0x22/0x30
Jul 22 05:00:22 myvm kernel: ? next_uptodate_page+0x45/0x1f0
Jul 22 05:00:22 myvm kernel: filemap_map_pages+0xb0/0x6e0
Jul 22 05:00:22 myvm kernel: xfs_filemap_map_pages+0x41/0x60 [xfs]
Jul 22 05:00:22 myvm kernel: do_fault+0x1a7/0x410
Jul 22 05:00:22 myvm kernel: __handle_mm_fault+0x660/0xfa0
Jul 22 05:00:22 myvm kernel: handle_mm_fault+0xdb/0x2d0
Jul 22 05:00:22 myvm kernel: do_user_addr_fault+0x19c/0x570
Jul 22 05:00:22 myvm kernel: exc_page_fault+0x70/0x170
Jul 22 05:00:22 myvm kernel: asm_exc_page_fault+0x22/0x30
Jul 22 05:00:22 myvm kernel: RIP: 0033:0x7f42398b32a6
Jul 22 05:00:22 myvm kernel: Code: c7 5d 41 5c e9 3b 3d 00 00 5a 31 c0 5d 41 5c c3 0f 1f 40 00 89 f1 89 f8 48 83 e1 3f 48 83 e0 3f 83 f9 30 77 3f 83 f8 30 77 3a <66> 0f 12 0f 66 0f 12 16 66 0f 16 4f 08 66 0f 16 56 08 66 0f ef c0
Jul 22 05:00:22 myvm kernel: RSP: 002b:00007ffc8a9aae68 EFLAGS: 00010287
Jul 22 05:00:22 myvm kernel: RAX: 0000000000000001 RBX: 000055fb22b39750 RCX: 0000000000000010
Jul 22 05:00:22 myvm kernel: RDX: 0000000000000000 RSI: 00007f41b1534550 RDI: 000055fb22b59d01
Jul 22 05:00:22 myvm kernel: RBP: 0000000000000009 R08: 0000000000000000 R09: 000055fb22b39750
Jul 22 05:00:22 myvm kernel: R10: 00007f41b1534550 R11: 000000000000002c R12: 00007f42398c3180
Jul 22 05:00:22 myvm kernel: R13: 0000000000000000 R14: 0000000000000009 R15: 00007f42398c3180
Jul 22 05:00:22 myvm kernel: </TASK>
Jul 22 05:00:22 myvm kernel: Modules linked in: ipt_REJECT nf_reject_ipv4 xt_multiport xt_nat xt_tcpudp veth xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables nfnetlink br_netfilter bridge stp llc lz4 lz4_compress zram zsmalloc overlay binfmt_misc intel_rapl_msr intel_rapl_common ghash_clmulni_intel sha512_ssse3 sha512_generic iTCO_wdt intel_pmc_bxt iTCO_vendor_support virtio_rng aesni_intel crypto_simd watchdog cryptd pcspkr rng_core virtio_gpu virtio_console virtio_balloon virtio_dma_buf drm_shmem_helper drm_kms_helper button evdev joydev serio_raw sg fuse dm_mod drm loop efi_pstore configfs qemu_fw_cfg ip_tables x_tables autofs4 xfs libcrc32c crc32c_generic hid_generic usbhid hid sr_mod cdrom sd_mod t10_pi ahci crc64_rocksoft crc64 crc_t10dif libahci crct10dif_generic virtio_net net_failover virtio_scsi failover libata xhci_pci scsi_mod psmouse xhci_hcd crct10dif_pclmul crct10dif_common
Jul 22 05:00:22 myvm kernel: crc32_pclmul crc32c_intel i2c_i801 i2c_smbus lpc_ich scsi_common usbcore virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio usb_common virtio_ring
Jul 22 05:00:22 myvm kernel: CR2: 0000000000000002
Jul 22 05:00:22 myvm kernel: ---[ end trace 0000000000000000 ]---
Jul 22 05:00:22 myvm kernel: RIP: 0010:next_uptodate_page+0x45/0x1f0
Jul 22 05:00:22 myvm kernel: Code: 0f 84 2f 01 00 00 48 81 ff 06 04 00 00 0f 84 a3 00 00 00 48 81 ff 02 04 00 00 0f 84 26 01 00 00 40 f6 c7 01 0f 85 8c 00 00 00 <48> 8b 07 a8 01 0f 85 81 00 00 00 8b 47 34 85 c0 74 7a 8d 50 01 4c
Jul 22 05:00:22 myvm kernel: RSP: 0000:ffffc1ae8274bcc0 EFLAGS: 00010246
Jul 22 05:00:22 myvm kernel: RAX: 0000000000000002 RBX: ffffc1ae8274bd18 RCX: 000000000000005e
Jul 22 05:00:22 myvm kernel: RDX: ffffc1ae8274bd18 RSI: ffffa0210863d2b0 RDI: 0000000000000002
Jul 22 05:00:22 myvm kernel: RBP: ffffa0210863d2b0 R08: 000000000000005e R09: 000055fb22bbdfff
Jul 22 05:00:22 myvm kernel: R10: 000000000000004f R11: 0000000000000000 R12: 000000000000005e
Jul 22 05:00:22 myvm kernel: R13: ffffa02194ad6980 R14: ffffa0210863d2b0 R15: ffffa02118538f60
Jul 22 05:00:22 myvm kernel: FS: 00007f423625fa40(0000) GS:ffffa0226bf80000(0000) knlGS:0000000000000000
Jul 22 05:00:22 myvm kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 22 05:00:22 myvm kernel: CR2: 0000000000000002 CR3: 000000010d87e000 CR4: 0000000000350ee0
Jul 22 05:00:22 myvm kernel: ------------[ cut here ]------------
Jul 22 05:00:22 myvm kernel: Voluntary context switch within RCU read-side critical section!
Jul 22 05:00:22 myvm kernel: WARNING: CPU: 3 PID: 3235204 at kernel/rcu/tree_plugin.h:318 rcu_note_context_switch+0x4ee/0x690
Jul 22 05:00:22 myvm kernel: Modules linked in: ipt_REJECT nf_reject_ipv4 xt_multiport xt_nat xt_tcpudp veth xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat nf_tables nfnetlink br_netfilter bridge stp llc lz4 lz4_compress zram zsmalloc overlay binfmt_misc intel_rapl_msr intel_rapl_common ghash_clmulni_intel sha512_ssse3 sha512_generic iTCO_wdt intel_pmc_bxt iTCO_vendor_support virtio_rng aesni_intel crypto_simd watchdog cryptd pcspkr rng_core virtio_gpu virtio_console virtio_balloon virtio_dma_buf drm_shmem_helper drm_kms_helper button evdev joydev serio_raw sg fuse dm_mod drm loop efi_pstore configfs qemu_fw_cfg ip_tables x_tables autofs4 xfs libcrc32c crc32c_generic hid_generic usbhid hid sr_mod cdrom sd_mod t10_pi ahci crc64_rocksoft crc64 crc_t10dif libahci crct10dif_generic virtio_net net_failover virtio_scsi failover libata xhci_pci scsi_mod psmouse xhci_hcd crct10dif_pclmul crct10dif_common
Jul 22 05:00:22 myvm kernel: crc32_pclmul crc32c_intel i2c_i801 i2c_smbus lpc_ich scsi_common usbcore virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio usb_common virtio_ring
Jul 22 05:00:22 myvm kernel: CPU: 3 PID: 3235204 Comm: postmaster Tainted: G D 6.1.0-10-amd64 #1 Debian 6.1.37-1
Jul 22 05:00:22 myvm kernel: Hardware name: Hetzner vServer/Standard PC (Q35 + ICH9, 2009), BIOS 20171111 11/11/2017
Jul 22 05:00:22 myvm kernel: RIP: 0010:rcu_note_context_switch+0x4ee/0x690
Jul 22 05:00:22 myvm kernel: Code: 49 89 3f 49 83 bc 24 98 00 00 00 00 0f 85 66 fe ff ff e9 58 fe ff ff 48 c7 c7 68 53 70 94 c6 05 d7 0e ad 01 01 e8 d2 8e f6 ff <0f> 0b e9 70 fb ff ff a9 ff ff ff 7f 0f 84 2c fc ff ff 65 48 8b 3c
Jul 22 05:00:22 myvm kernel: RSP: 0018:ffffc1ae8274bc60 EFLAGS: 00010086
Jul 22 05:00:22 myvm kernel: RAX: 0000000000000000 RBX: ffffa0226bfb1c00 RCX: 0000000000000000
Jul 22 05:00:22 myvm kernel: RDX: 0000000000000003 RSI: ffffffff9474105e RDI: 00000000ffffffff
Jul 22 05:00:22 myvm kernel: RBP: 0000000000000000 R08: 0000000000000000 R09: ffffc1ae8274bad0
Jul 22 05:00:22 myvm kernel: R10: 0000000000000003 R11: ffffffff94ed43a8 R12: 0000000000030e40
Jul 22 05:00:22 myvm kernel: R13: ffffa02175d09980 R14: ffffc1ae8274bd50 R15: 0000000000000000
Jul 22 05:00:22 myvm kernel: FS: 0000000000000000(0000) GS:ffffa0226bf80000(0000) knlGS:0000000000000000
Jul 22 05:00:22 myvm kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 22 05:00:22 myvm kernel: CR2: 00007f41ef6dd70e CR3: 00000000059f6000 CR4: 0000000000350ee0
Jul 22 05:00:22 myvm kernel: Call Trace:
Jul 22 05:00:22 myvm kernel: <TASK>
Jul 22 05:00:22 myvm kernel: ? __warn+0x7d/0xc0
Jul 22 05:00:22 myvm kernel: ? rcu_note_context_switch+0x4ee/0x690
Jul 22 05:00:22 myvm kernel: ? report_bug+0xe6/0x170
Jul 22 05:00:22 myvm kernel: ? irq_work_queue+0xa/0x50
Jul 22 05:00:22 myvm kernel: ? handle_bug+0x41/0x70
Jul 22 05:00:22 myvm kernel: ? exc_invalid_op+0x13/0x60
Jul 22 05:00:22 myvm kernel: ? asm_exc_invalid_op+0x16/0x20
Jul 22 05:00:22 myvm kernel: ? rcu_note_context_switch+0x4ee/0x690
Jul 22 05:00:22 myvm kernel: __schedule+0xac/0xa20
Jul 22 05:00:22 myvm kernel: schedule+0x5d/0xe0
Jul 22 05:00:22 myvm kernel: rwsem_down_write_slowpath+0x34e/0x730
Jul 22 05:00:22 myvm kernel: exit_mmap+0xf6/0x2f0
Jul 22 05:00:22 myvm kernel: __mmput+0x3e/0x130
Jul 22 05:00:22 myvm kernel: do_exit+0x2fc/0xb10
Jul 22 05:00:22 myvm kernel: make_task_dead+0x8d/0x90
Jul 22 05:00:22 myvm kernel: rewind_stack_and_make_dead+0x17/0x20
Jul 22 05:00:22 myvm kernel: RIP: 0033:0x7f42398b32a6
Jul 22 05:00:22 myvm kernel: Code: Unable to access opcode bytes at 0x7f42398b327c.
Jul 22 05:00:22 myvm kernel: RSP: 002b:00007ffc8a9aae68 EFLAGS: 00010287
Jul 22 05:00:22 myvm kernel: RAX: 0000000000000001 RBX: 000055fb22b39750 RCX: 0000000000000010
Jul 22 05:00:22 myvm kernel: RDX: 0000000000000000 RSI: 00007f41b1534550 RDI: 000055fb22b59d01
Jul 22 05:00:22 myvm kernel: RBP: 0000000000000009 R08: 0000000000000000 R09: 000055fb22b39750
Jul 22 05:00:22 myvm kernel: R10: 00007f41b1534550 R11: 000000000000002c R12: 00007f42398c3180
Jul 22 05:00:22 myvm kernel: R13: 0000000000000000 R14: 0000000000000009 R15: 00007f42398c3180
Jul 22 05:00:22 myvm kernel: </TASK>
Jul 22 05:00:22 myvm kernel: ---[ end trace 0000000000000000 ]---
أنا أميل إلى التفكير في نفس الشيء، باستثناء أن هذه مشكلة متكررة إلى حد ما، ولا تبدو عشوائية تمامًا. أشك في أن Hetzner ربما لا تستخدم ذاكرة ECC، وهذا على الأرجح كيف يمكنهم تقديم كل هذا مقابل السعر. حتى خوادمهم المخصصة [يبدو] أنها لا تملك ذاكرة ECC. ولكن حتى مع ذلك، تُعتبر Hetzner بشكل عام موثوقة للغاية من حيث بنيتها التحتية.