On Mon, 2 May 2022 02:29:59 +0200
Zdenek Kaspar <zkaspar82@xxxxxxxxx> wrote:
> Hi, when I noticed fix for pre-EPYC and older Intel hardware I checked
> v5.18-rc5 on my old Core2 machine and something else fails here.
>
> When I kill -9 the first qemu attempt (see dmesg-1), then next
> attempt is OK, after successful VM shutdown another attempt fails
> again (see dmesg-2). After that it takes some time and machine needs
> reset (see dmesg-3).
>
> HTH, Z.
Oh crap, I had auto-applied mglru patch, sorry...
Now starting qemu does this:
20 root 20 0 0.0m R 100.0 0.0 0:28.33 kworker/1:0+rcu_gp
looks like: 94.36% [kernel] [k] delay_tsc
kill -9 "qemu process" and noticed several D state processes:
107 ? D 0:04 [kworker/u8:7+events_unbound]
108 ? D 0:03 [kworker/u8:8+events_unbound]
632 ? Ds 0:00 /usr/lib/systemd/systemd-journald
machine is trashed, here's dmesg info:
[ 172.349282] BUG: kernel NULL pointer dereference, address: 000000000000000b
[ 172.349324] #PF: supervisor write access in kernel mode
[ 172.349345] #PF: error_code(0x0002) - not-present page
[ 172.349363] PGD 0 P4D 0
[ 172.349375] Oops: 0002 [#1] PREEMPT SMP PTI
[ 172.349393] CPU: 0 PID: 626 Comm: qemu-build Not tainted 5.18.0-rc5-2-amd64 #1
[ 172.349420] Hardware name: /DG35EC, BIOS ECG3510M.86A.0118.2010.0113.1426 01/13/2010
[ 172.349446] RIP: 0010:kvm_replace_memslot+0xb0/0x2a0 [kvm]
[ 172.349496] Code: ac 1c 80 04 00 00 4d 85 f6 74 65 48 89 e8 48 c1 e0 04 49 8b 4c 06 08 48 85 c9 74 21 4c 01 f0 48 8b 10 48 89 11 48 85 d2 74 04 <48> 89 4a 08 48 c7 40 08 00 00 00 00 48 c7 00 00 00 00 00 48 8d 44
[ 172.349556] RSP: 0018:ffffb0740064fd78 EFLAGS: 00010206
[ 172.349577] RAX: ffff9e9b41240e00 RBX: ffffb07401271000 RCX: ffffb07401271388
[ 172.349601] RDX: 0000000000000003 RSI: ffff9e9b41240e00 RDI: ffffb07401271000
[ 172.349626] RBP: 0000000000000000 R08: 000000000016000e R09: 000000000016000d
[ 172.349651] R10: ffffd73680764d00 R11: ffff9e9bbf226a78 R12: 0000000000000000
[ 172.349674] R13: ffffb07401271480 R14: ffff9e9b41240e00 R15: 0000000000000000
[ 172.349699] FS: 00007fdf1900f640(0000) GS:ffff9e9bbf200000(0000) knlGS:0000000000000000
[ 172.349726] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 172.349747] CR2: 000000000000000b CR3: 0000000003626000 CR4: 00000000000026f0
[ 172.349772] Call Trace:
[ 172.349785] <TASK>
[ 172.349795] kvm_set_memslot+0x3a8/0x5e0 [kvm]
[ 172.349837] kvm_set_memory_region+0x22/0x40 [kvm]
[ 172.349879] kvm_vm_ioctl+0x44d/0x500 [kvm]
[ 172.349920] ? __fget_files+0x8d/0xa0
[ 172.349940] __x64_sys_ioctl+0xbf3/0xce0
[ 172.349957] ? do_user_addr_fault+0x280/0x3c0
[ 172.349977] ? asm_exc_page_fault+0x5/0x20
[ 172.349995] do_syscall_64+0x31/0x50
[ 172.350011] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 172.350032] RIP: 0033:0x7fdf1a8cee6f
[ 172.350046] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 77 1f 48 8b 44 24 18 64 48 2b 04 25 28 00
[ 172.350105] RSP: 002b:00007fdf1900df70 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 172.350131] RAX: ffffffffffffffda RBX: 000000004020ae46 RCX: 00007fdf1a8cee6f
[ 172.350156] RDX: 00007fdf1900e110 RSI: 000000004020ae46 RDI: 000000000000000d
[ 172.350180] RBP: 000055d7a44e7280 R08: 0000000000000000 R09: 0000000000000000
[ 172.350204] R10: 00000000000c0000 R11: 0000000000000246 R12: 00007fdf1900e110
[ 172.350228] R13: 000000003ff40000 R14: 000055d7a4418ee0 R15: 00000000000c0000
[ 172.350254] </TASK>
[ 172.350262] Modules linked in: vhost_net vhost vhost_iotlb tun nfsd ksmbd cifs_arc4 xfs nhpoly1305_sse2 nhpoly1305 chacha_generic chacha_x86_64 libchacha adiantum libpoly1305 algif_skcipher af_alg auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc lzo_rle zram zsmalloc cpufreq_powersave i915 kvm_intel video 8250 drm_buddy intel_gtt iosf_mbi kvm 8250_base ttm bridge serial_core i2c_algo_bit drm_dp_helper e1000e drm_kms_helper iTCO_wdt irqbypass lpc_ich sysimgblt syscopyarea mfd_core stp sysfillrect acpi_cpufreq evdev fb_sys_fops processor button llc drm sch_fq_codel backlight i2c_core ip_tables x_tables ipv6 autofs4 btrfs raid6_pq xor zstd_decompress zstd_compress lzo_decompress lzo_compress libcrc32c crc32c_generic xts ecb hid_generic usbhid hid dm_crypt dm_mod sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft crc64 uhci_hcd ehci_pci ahci ehci_hcd libahci usbcore pata_jmicron sata_sil24 usb_common
[ 172.350624] CR2: 000000000000000b
[ 172.352202] ---[ end trace 0000000000000000 ]---
[ 172.353793] RIP: 0010:kvm_replace_memslot+0xb0/0x2a0 [kvm]
[ 172.355383] Code: ac 1c 80 04 00 00 4d 85 f6 74 65 48 89 e8 48 c1 e0 04 49 8b 4c 06 08 48 85 c9 74 21 4c 01 f0 48 8b 10 48 89 11 48 85 d2 74 04 <48> 89 4a 08 48 c7 40 08 00 00 00 00 48 c7 00 00 00 00 00 48 8d 44
[ 172.358667] RSP: 0018:ffffb0740064fd78 EFLAGS: 00010206
[ 172.360335] RAX: ffff9e9b41240e00 RBX: ffffb07401271000 RCX: ffffb07401271388
[ 172.362025] RDX: 0000000000000003 RSI: ffff9e9b41240e00 RDI: ffffb07401271000
[ 172.363723] RBP: 0000000000000000 R08: 000000000016000e R09: 000000000016000d
[ 172.365430] R10: ffffd73680764d00 R11: ffff9e9bbf226a78 R12: 0000000000000000
[ 172.367147] R13: ffffb07401271480 R14: ffff9e9b41240e00 R15: 0000000000000000
[ 172.368856] FS: 00007fdf1900f640(0000) GS:ffff9e9bbf200000(0000) knlGS:0000000000000000
[ 172.370574] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 172.372295] CR2: 000000000000000b CR3: 0000000003626000 CR4: 00000000000026f0
[ 172.672682] BUG: kernel NULL pointer dereference, address: 0000000000000003
[ 172.674427] #PF: supervisor read access in kernel mode
[ 172.676176] #PF: error_code(0x0000) - not-present page
[ 172.677931] PGD 0 P4D 0
[ 172.679677] Oops: 0000 [#2] PREEMPT SMP PTI
[ 172.681421] CPU: 1 PID: 200 Comm: systemd-journal Tainted: G D 5.18.0-rc5-2-amd64 #1
[ 172.683186] Hardware name: /DG35EC, BIOS ECG3510M.86A.0118.2010.0113.1426 01/13/2010
[ 172.684955] RIP: 0010:fsnotify+0x5b5/0x980
[ 172.686722] Code: 40 a8 10 74 13 48 8b 74 24 30 48 85 f6 74 09 4c 8b 6e 08 0b 16 0b 4e 40 f7 d1 23 4c 24 08 85 d1 0f 84 7f 02 00 00 49 8b 4d 00 <4c> 8b 19 4d 85 db 74 53 4c 89 ef 44 89 fe 48 8b 14 24 8b 4c 24 0c
[ 172.690438] RSP: 0018:ffffb074001afd28 EFLAGS: 00010202
[ 172.692310] RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000003
[ 172.694141] RDX: 0000000008002fc6 RSI: ffff9e9b420acd70 RDI: ffff9e9b41297e00
[ 172.695920] RBP: ffff9e9b41297e00 R08: ffff9e9b4117e800 R09: ffff9e9b46068ed8
[ 172.697702] R10: 0000000000000000 R11: ffffffffa81914b0 R12: 0000000000000000
[ 172.699486] R13: ffff9e9b41297e00 R14: ffff9e9b46068ed8 R15: 0000000008000002
[ 172.701267] FS: 00007ff7ff68ee80(0000) GS:ffff9e9bbf280000(0000) knlGS:0000000000000000
[ 172.703050] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 172.704829] CR2: 0000000000000003 CR3: 0000000003ca8000 CR4: 00000000000026e0
[ 172.706618] Call Trace:
[ 172.708396] <TASK>
[ 172.710149] __fsnotify_parent+0x1f9/0x240
[ 172.711896] ? shmem_setattr+0x172/0x1b0
[ 172.713628] notify_change+0x3f0/0x410
[ 172.715363] do_sys_ftruncate+0x121/0x1e0
[ 172.717103] do_syscall_64+0x31/0x50
[ 172.718838] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 172.720580] RIP: 0033:0x7ff80008932b
[ 172.722315] Code: 77 05 c3 0f 1f 40 00 48 8b 15 69 fa 0e 00 f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 4d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 39 fa 0e 00 f7 d8
[ 172.726019] RSP: 002b:00007ffc04a998b8 EFLAGS: 00000206 ORIG_RAX: 000000000000004d
[ 172.727913] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff80008932b
[ 172.729821] RDX: 00005633275d43f0 RSI: 0000000000080000 RDI: 0000000000000013
[ 172.731736] RBP: 00007ffc04a99950 R08: 0000000000000001 R09: 00005633275de0ac
[ 172.733658] R10: 0000000000000010 R11: 0000000000000206 R12: 00005633275ce270
[ 172.735522] R13: 00007ffc04a998f8 R14: 00007ffc04a99900 R15: 0000000000000000
[ 172.737335] </TASK>
[ 172.739122] Modules linked in: vhost_net vhost vhost_iotlb tun nfsd ksmbd cifs_arc4 xfs nhpoly1305_sse2 nhpoly1305 chacha_generic chacha_x86_64 libchacha adiantum libpoly1305 algif_skcipher af_alg auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc lzo_rle zram zsmalloc cpufreq_powersave i915 kvm_intel video 8250 drm_buddy intel_gtt iosf_mbi kvm 8250_base ttm bridge serial_core i2c_algo_bit drm_dp_helper e1000e drm_kms_helper iTCO_wdt irqbypass lpc_ich sysimgblt syscopyarea mfd_core stp sysfillrect acpi_cpufreq evdev fb_sys_fops processor button llc drm sch_fq_codel backlight i2c_core ip_tables x_tables ipv6 autofs4 btrfs raid6_pq xor zstd_decompress zstd_compress lzo_decompress lzo_compress libcrc32c crc32c_generic xts ecb hid_generic usbhid hid dm_crypt dm_mod sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft crc64 uhci_hcd ehci_pci ahci ehci_hcd libahci usbcore pata_jmicron sata_sil24 usb_common
[ 172.750745] CR2: 0000000000000003
[ 172.752725] ---[ end trace 0000000000000000 ]---
[ 172.754640] RIP: 0010:kvm_replace_memslot+0xb0/0x2a0 [kvm]
[ 172.756555] Code: ac 1c 80 04 00 00 4d 85 f6 74 65 48 89 e8 48 c1 e0 04 49 8b 4c 06 08 48 85 c9 74 21 4c 01 f0 48 8b 10 48 89 11 48 85 d2 74 04 <48> 89 4a 08 48 c7 40 08 00 00 00 00 48 c7 00 00 00 00 00 48 8d 44
[ 172.760417] RSP: 0018:ffffb0740064fd78 EFLAGS: 00010206
[ 172.762329] RAX: ffff9e9b41240e00 RBX: ffffb07401271000 RCX: ffffb07401271388
[ 172.764240] RDX: 0000000000000003 RSI: ffff9e9b41240e00 RDI: ffffb07401271000
[ 172.766173] RBP: 0000000000000000 R08: 000000000016000e R09: 000000000016000d
[ 172.768099] R10: ffffd73680764d00 R11: ffff9e9bbf226a78 R12: 0000000000000000
[ 172.769975] R13: ffffb07401271480 R14: ffff9e9b41240e00 R15: 0000000000000000
[ 172.771790] FS: 00007ff7ff68ee80(0000) GS:ffff9e9bbf200000(0000) knlGS:0000000000000000
[ 172.773618] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 172.775443] CR2: 000000000000000b CR3: 0000000003ca8000 CR4: 00000000000026f0
