On Thu, Oct 17, 2024 at 07:08:27PM +0200, Antony Antony wrote: > Hi, > > Starting with Linux 6.12-rc1, and continuing in -rc3, the automatic VM tests > of NixOS don't boot, hits a bug. I see a similar issue reported, however, > the fix mentioned there is not enoguh in my case. > > https://lore.kernel.org/lkml/D4LNG4ZHZM5X.1STBTSTM9LN6E@xxxxxxxxx/T/ > This fix is in -rc3. When running 6.12-rc3, I see a list curruption. > > I bisected it back to > Fixes: ee4cdf7ba857 ("netfs: Speed up buffered reading") David, did you already have a fix for this? > Here are the logs using v6.12-rc3 > > [ 28.451336] list_del corruption. next->prev should be ffa38103000ccd88, but was ffa38103000c7108. (next=ffa381030010c208) > [ 28.454010] ------------[ cut here ]------------ > [ 28.454184] kernel BUG at lib/list_debug.c:65! > [ 28.454971] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI > [ 28.455339] CPU: 0 UID: 0 PID: 442 Comm: systemd-coredum Not tainted 6.12.0-rc3 #1-NixOS > [ 28.455610] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 > [ 28.456081] RIP: 0010:__list_del_entry_valid_or_report+0xcc/0xd0 > [ 28.456326] Code: 89 fe 48 89 c2 48 c7 c7 f0 49 c1 aa e8 5d 90 ac ff 90 0f 0b 48 89 d1 48 c7 c7 40 4a c1 aa 48 89 f2 48 89 c6 e8 45 90 ac ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f > [ 28.456815] RSP: 0000:ff6344c7402679c0 EFLAGS: 00010246 > [ 28.457012] RAX: 000000000000006d RBX: ff4122917e03dc80 RCX: 0000000000000000 > [ 28.457200] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 > [ 28.457384] RBP: ffa38103000ccd80 R08: 0000000000000000 R09: 0000000000000000 > [ 28.457569] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 > [ 28.457752] R13: ff4122917e03dc80 R14: ffa38103000ccd88 R15: ff4122917ffd6180 > [ 28.457999] FS: 00007ff00b991440(0000) GS:ff4122917e000000(0000) knlGS:0000000000000000 > [ 28.458223] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 28.458381] CR2: 00007ff00b970008 CR3: 0000000004b60000 CR4: 0000000000751ef0 > [ 28.458693] PKRU: 55555554 > [ 28.458848] Call Trace: > [ 28.459079] <TASK> > [ 28.459259] ? die+0x36/0x90 > [ 28.459407] ? do_trap+0xed/0x110 > [ 28.459511] ? __list_del_entry_valid_or_report+0xcc/0xd0 > [ 28.459658] ? do_error_trap+0x6a/0xa0 > [ 28.459769] ? __list_del_entry_valid_or_report+0xcc/0xd0 > [ 28.459915] ? exc_invalid_op+0x51/0x80 > [ 28.460048] ? __list_del_entry_valid_or_report+0xcc/0xd0 > [ 28.460193] ? asm_exc_invalid_op+0x1a/0x20 > [ 28.460329] ? __list_del_entry_valid_or_report+0xcc/0xd0 > [ 28.460491] __rmqueue_pcplist+0xa5/0xd00 > [ 28.460654] get_page_from_freelist+0x2df/0x1910 > [ 28.460808] __alloc_pages_noprof+0x1a3/0x1130 > [ 28.460940] ? __alloc_pages_noprof+0x1a3/0x1130 > [ 28.461107] ? filemap_get_entry+0x10f/0x1a0 > [ 28.461244] alloc_pages_mpol_noprof+0x8f/0x1f0 > [ 28.461377] folio_alloc_mpol_noprof+0x14/0x40 > [ 28.461503] vma_alloc_folio_noprof+0x6b/0xd0 > [ 28.461630] do_wp_page+0x184/0xce0 > [ 28.461749] __handle_mm_fault+0xb1d/0xfd0 > [ 28.461883] handle_mm_fault+0x17f/0x2e0 > [ 28.462017] do_user_addr_fault+0x177/0x6b0 > [ 28.462149] exc_page_fault+0x71/0x160 > [ 28.462267] asm_exc_page_fault+0x26/0x30 > [ 28.462442] RIP: 0033:0x7ff00c25e90c > [ 28.462817] Code: 1f 80 00 00 00 00 48 8b 32 8b 4a 08 4c 01 fe 48 83 f9 26 74 0a 48 83 f9 08 0f 85 5c 1e 00 00 48 8b 4a 10 48 83 c2 18 4c 01 f9 <48> 89 0e 48 39 da 72 d4 4d 8b 9a 08 02 00 00 4d 85 db 0f 84 84 0b > [ 28.463282] RSP: 002b:00007ffec53f5d10 EFLAGS: 00010206 > [ 28.463426] RAX: 00007ff00b4141d8 RBX: 00007ff00b4c25b0 RCX: 00007ff00b82de90 > [ 28.463603] RDX: 00007ff00b4ba4b0 RSI: 00007ff00b970008 RDI: 00007ff00b4c3540 > [ 28.463779] RBP: 00007ffec53f5e30 R08: 000000000006eb20 R09: 00007ff00b4c2688 > [ 28.463956] R10: 00007ff00bb99be0 R11: 0000000000000000 R12: 00007ffec53f5dc0 > [ 28.464155] R13: 00007ffec53f5dc0 R14: 00007ff00bb99be0 R15: 00007ff00b400000 > [ 28.464392] </TASK> > [ 28.465174] Modules linked in: nf_tables libcrc32c sch_fq_codel fuse configfs efi_pstore loop tun tap macvlan bridge stp llc nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 overlay 9p ext4 crc32c_generic crc16 mbcache jbd2 9pnet_virtio 9pnet hid_generic usbhid hid netfs sr_mod virtio_net cdrom atkbd virtio_blk net_failover libps2 failover vivaldi_fmap crc32c_intel ata_piix libata scsi_mod uhci_hcd ehci_hcd virtio_pci virtio_pci_legacy_dev i8042 virtio_pci_modern_dev scsi_common serio rtc_cmos dm_mod dax virtio_gpu virtio_dma_buf virtio_rng rng_core virtio_console virtio_balloon virtio virtio_ring > [ 28.467348] ---[ end trace 0000000000000000 ]--- > [ 28.467598] RIP: 0010:__list_del_entry_valid_or_report+0xcc/0xd0 > [ 28.467765] Code: 89 fe 48 89 c2 48 c7 c7 f0 49 c1 aa e8 5d 90 ac ff 90 0f 0b 48 89 d1 48 c7 c7 40 4a c1 aa 48 89 f2 48 89 c6 e8 45 90 ac ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f > [ 28.468210] RSP: 0000:ff6344c7402679c0 EFLAGS: 00010246 > [ 28.468355] RAX: 000000000000006d RBX: ff4122917e03dc80 RCX: 0000000000000000 > [ 28.468557] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 > [ 28.468730] RBP: ffa38103000ccd80 R08: 0000000000000000 R09: 0000000000000000 > [ 28.468902] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 > [ 28.469070] R13: ff4122917e03dc80 R14: ffa38103000ccd88 R15: ff4122917ffd6180 > [ 28.469259] FS: 00007ff00b991440(0000) GS:ff4122917e000000(0000) knlGS:0000000000000000 > [ 28.469465] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 28.469640] CR2: 00007ff00b970008 CR3: 0000000004b60000 CR4: 0000000000751ef0 > [ 28.469817] PKRU: 55555554 > [ 28.469984] note: systemd-coredum[442] exited with preempt_count 2 > machine: Guest root shell did not produce any data yet... > machine: To debug, enter the VM and run 'systemctl status backdoor.service'. > [ 28.775636] systemd[1]: Assertion '!q->items[k].idx || *(q->items[k].idx) == k' failed at src/basic/prioq.c:73, function swap(). Aborting. > [ 28.806829] systemd[1]: Caught <ABRT>, from our own process. > [ 28.873961] systemd-udevd[411]: Using default interface naming scheme 'v255'. > [ 29.096262] systemd-journald[383]: Received client request to flush runtime journal. > [ 30.517929] iwhg72zrr04ywa4c8schr72x3m8vs5s9-mount-pstore.sh[388]: Persistent Storage backend was not registered in time. > [ 30.820098] BUG: Bad page state in process udevadm pfn:041e6 > [ 30.820999] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x29a pfn:0x41e6 > [ 30.821358] flags: 0xffffc000000000(node=0|zone=1|lastcpupid=0x1ffff) > [ 30.822021] raw: 00ffffc000000000 dead000000000100 dead000000000122 0000000000000000 > [ 30.822231] raw: 000000000000029a 0000000000000000 00000001ffffffff 0000000000000000 > [ 30.822485] page dumped because: nonzero _refcount > [ 30.822686] Modules linked in: nf_tables libcrc32c sch_fq_codel fuse configfs efi_pstore loop tun tap macvlan bridge stp llc nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 overlay 9p ext4 crc32c_generic crc16 mbcache jbd2 9pnet_virtio 9pnet hid_generic usbhid hid netfs sr_mod virtio_net cdrom atkbd virtio_blk net_failover libps2 failover vivaldi_fmap crc32c_intel ata_piix libata scsi_mod uhci_hcd ehci_hcd virtio_pci virtio_pci_legacy_dev i8042 virtio_pci_modern_dev scsi_common serio rtc_cmos dm_mod dax virtio_gpu virtio_dma_buf virtio_rng rng_core virtio_console virtio_balloon virtio virtio_ring > [ 30.824431] CPU: 0 UID: 0 PID: 386 Comm: udevadm Tainted: G D 6.12.0-rc3 #1-NixOS > [ 30.824748] Tainted: [D]=DIE > [ 30.824846] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 > [ 30.825149] Call Trace: > [ 30.825271] <TASK> > [ 30.825359] dump_stack_lvl+0x64/0x90 > [ 30.825498] bad_page+0x70/0x110 > [ 30.825649] get_page_from_freelist+0x9bf/0x1910 > [ 30.825804] __alloc_pages_noprof+0x1a3/0x1130 > [ 30.825935] ? mntput_no_expire+0x4a/0x260 > [ 30.826062] ? path_get+0x15/0x40 > [ 30.826165] ? do_dentry_open+0x57/0x450 > [ 30.826283] ? mntput_no_expire+0x4a/0x260 > [ 30.826412] alloc_pages_mpol_noprof+0x8f/0x1f0 > [ 30.826546] folio_alloc_mpol_noprof+0x14/0x40 > [ 30.826701] vma_alloc_folio_noprof+0x6b/0xd0 > [ 30.826840] do_anonymous_page+0x2ce/0x810 > [ 30.826963] ? __pte_offset_map+0x1b/0x190 > [ 30.827089] __handle_mm_fault+0xb73/0xfd0 > [ 30.827226] handle_mm_fault+0x17f/0x2e0 > [ 30.827345] do_user_addr_fault+0x177/0x6b0 > [ 30.827476] exc_page_fault+0x71/0x160 > [ 30.827595] asm_exc_page_fault+0x26/0x30 > [ 30.827742] RIP: 0033:0x7f94aeca7c42 > [ 30.827873] Code: 8d 34 19 48 39 d5 48 89 75 60 0f 95 c2 48 29 d8 48 83 c1 10 0f b6 d2 48 83 c8 01 48 c1 e2 02 48 09 da 48 83 ca 01 48 89 51 f8 <48> 89 46 08 e9 3d ff ff ff 48 89 df e8 4d e8 ff ff 48 89 c1 48 85 > [ 30.828306] RSP: 002b:00007ffef7804b50 EFLAGS: 00010206 > [ 30.828453] RAX: 0000000000013df1 RBX: 0000000000001010 RCX: 000055da8fb0b210 > [ 30.828628] RDX: 0000000000001011 RSI: 000055da8fb0c210 RDI: 0000000000000000 > [ 30.828846] RBP: 00007f94aedf1ac0 R08: 0000000000000000 R09: 0000000000000001 > [ 30.829021] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000001001 > [ 30.829196] R13: 0000000000000000 R14: 00000000000000ff R15: 00007f94aedf1b20 > [ 30.829385] </TASK> > [ 30.846642] systemd-journal[383]: segfault at 6f ip 00007f834f1f3894 sp 00007ffd95427128 error 4 in libzstd.so.1.5.6[b2894,7f834f14a000+b9000] likely on CPU 0 (core 0, socket 0) > [ 30.847473] Code: 74 72 00 65 72 72 6d 73 67 69 64 78 00 61 6c 6c 5f 6d 61 73 6b 00 61 70 70 5f 6d 61 73 6b 00 6f 66 6c 5f 68 65 61 64 00 62 75 <66> 00 70 6f 70 5f 61 72 67 00 70 61 64 2e 70 61 72 74 2e 30 00 66 > [ 30.915249] BUG: Bad page state in process systemd-coredum pfn:03388 > [ 30.915835] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x67 pfn:0x3388 > [ 30.916068] flags: 0xffffc000000000(node=0|zone=1|lastcpupid=0x1ffff) > [ 30.916243] raw: 00ffffc000000000 dead000000000100 dead000000000122 0000000000000000 > [ 30.916437] raw: 0000000000000067 0000000000000000 00000001ffffffff 0000000000000000 > [ 30.916699] page dumped because: nonzero _refcount > [ 30.916849] Modules linked in: nf_tables libcrc32c sch_fq_codel fuse configfs efi_pstore loop tun tap macvlan bridge stp llc nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 overlay 9p ext4 crc32c_generic crc16 mbcache jbd2 9pnet_virtio 9pnet hid_generic usbhid hid netfs sr_mod virtio_net cdrom atkbd virtio_blk net_failover libps2 failover vivaldi_fmap crc32c_intel ata_piix libata scsi_mod uhci_hcd ehci_hcd virtio_pci virtio_pci_legacy_dev i8042 virtio_pci_modern_dev scsi_common serio rtc_cmos dm_mod dax virtio_gpu virtio_dma_buf virtio_rng rng_core virtio_console virtio_balloon virtio virtio_ring > [ 30.919573] CPU: 0 UID: 0 PID: 502 Comm: systemd-coredum Tainted: G B D 6.12.0-rc3 #1-NixOS > [ 30.920124] Tainted: [B]=BAD_PAGE, [D]=DIE > [ 30.920363] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 > [ 30.921009] Call Trace: > [ 30.921193] <TASK> > [ 30.921373] dump_stack_lvl+0x64/0x90 > [ 30.921644] bad_page+0x70/0x110 > [ 30.921884] get_page_from_freelist+0x9bf/0x1910 > [ 30.922252] __alloc_pages_noprof+0x1a3/0x1130 > [ 30.922532] ? xas_load+0xd/0xe0 > [ 30.922759] ? filemap_get_entry+0x10f/0x1a0 > [ 30.923103] ? __lruvec_stat_mod_folio+0x83/0xd0 > [ 30.923409] alloc_pages_mpol_noprof+0x8f/0x1f0 > [ 30.923712] folio_alloc_mpol_noprof+0x14/0x40 > [ 30.923989] vma_alloc_folio_noprof+0x6b/0xd0 > [ 30.924298] do_fault+0x81/0x4d0 > [ 30.924550] __handle_mm_fault+0x7c1/0xfd0 > [ 30.924849] handle_mm_fault+0x17f/0x2e0 > [ 30.925138] do_user_addr_fault+0x177/0x6b0 > [ 30.925421] exc_page_fault+0x71/0x160 > [ 30.925680] asm_exc_page_fault+0x26/0x30 > [ 30.925947] RIP: 0033:0x7f8a5282790c > [ 30.926236] Code: 1f 80 00 00 00 00 48 8b 32 8b 4a 08 4c 01 fe 48 83 f9 26 74 0a 48 83 f9 08 0f 85 5c 1e 00 00 48 8b 4a 10 48 83 c2 18 4c 01 f9 <48> 89 0e 48 39 da 72 d4 4d 8b 9a 08 02 00 00 4d 85 db 0f 84 84 0b > [ 30.926890] RSP: 002b:00007fff178b8b30 EFLAGS: 00010202 > [ 30.927042] RAX: 00007f8a52210588 RBX: 00007f8a5226ea58 RCX: 00007f8a5251b589 > [ 30.927254] RDX: 00007f8a52256080 RSI: 00007f8a52605010 RDI: 00007f8a522864e8 > [ 30.927444] RBP: 00007fff178b8c50 R08: 00000000000346c8 R09: 00007f8a52272910 > [ 30.927628] R10: 00007f8a528121e0 R11: 0000000000000000 R12: 00007fff178b8be0 > [ 30.927812] R13: 00007fff178b8be0 R14: 00007f8a528121e0 R15: 00007f8a52200000 > [ 30.928009] </TASK> > [ 30.943217] BUG: Bad page state in process systemd-coredum pfn:0420a > [ 30.943840] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x21 pfn:0x420a > [ 30.944072] flags: 0xffffc000000000(node=0|zone=1|lastcpupid=0x1ffff) > [ 30.944245] raw: 00ffffc000000000 dead000000000100 dead000000000122 0000000000000000 > [ 30.944440] raw: 0000000000000021 0000000000000000 00000001ffffffff 0000000000000000 > [ 30.944723] page dumped because: nonzero _refcount > [ 30.944852] Modules linked in: nf_tables libcrc32c sch_fq_codel fuse configfs efi_pstore loop tun tap macvlan bridge stp llc nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 overlay 9p ext4 crc32c_generic crc16 mbcache jbd2 9pnet_virtio 9pnet hid_generic usbhid hid netfs sr_mod virtio_net cdrom atkbd virtio_blk net_failover libps2 failover vivaldi_fmap crc32c_intel ata_piix libata scsi_mod uhci_hcd ehci_hcd virtio_pci virtio_pci_legacy_dev i8042 virtio_pci_modern_dev scsi_common serio rtc_cmos dm_mod dax virtio_gpu virtio_dma_buf virtio_rng rng_core virtio_console virtio_balloon virtio virtio_ring > [ 30.946462] CPU: 0 UID: 0 PID: 502 Comm: systemd-coredum Tainted: G B D 6.12.0-rc3 #1-NixOS > [ 30.946744] Tainted: [B]=BAD_PAGE, [D]=DIE > [ 30.946871] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 > [ 30.947159] Call Trace: > [ 30.947251] <TASK> > [ 30.947337] dump_stack_lvl+0x64/0x90 > [ 30.947468] bad_page+0x70/0x110 > [ 30.947582] get_page_from_freelist+0x9bf/0x1910 > [ 30.947738] __alloc_pages_noprof+0x1a3/0x1130 > [ 30.947907] ? __alloc_pages_noprof+0x1a3/0x1130 > [ 30.948045] ? filemap_get_entry+0x10f/0x1a0 > [ 30.948175] ? __pte_offset_map+0x1b/0x190 > [ 30.948300] ? next_uptodate_folio+0x89/0x2a0 > [ 30.948429] alloc_pages_mpol_noprof+0x8f/0x1f0 > [ 30.948566] folio_alloc_mpol_noprof+0x14/0x40 > [ 30.948692] vma_alloc_folio_noprof+0x6b/0xd0 > [ 30.948840] do_wp_page+0x184/0xce0 > [ 30.948965] __handle_mm_fault+0xb1d/0xfd0 > [ 30.949102] handle_mm_fault+0x17f/0x2e0 > [ 30.949223] do_user_addr_fault+0x177/0x6b0 > [ 30.949354] exc_page_fault+0x71/0x160 > [ 30.949474] asm_exc_page_fault+0x26/0x30 > [ 30.949598] RIP: 0033:0x7f8a5282790c > [ 30.949718] Code: 1f 80 00 00 00 00 48 8b 32 8b 4a 08 4c 01 fe 48 83 f9 26 74 0a 48 83 f9 08 0f 85 5c 1e 00 00 48 8b 4a 10 48 83 c2 18 4c 01 f9 <48> 89 0e 48 39 da 72 d4 4d 8b 9a 08 02 00 00 4d 85 db 0f 84 84 0b > [ 30.950883] RSP: 002b:00007fff178b8b30 EFLAGS: 00010202 > [ 30.951030] RAX: 00007f8a52210588 RBX: 00007f8a5226ea58 RCX: 00007f8a5251feef > [ 30.951209] RDX: 00007f8a522624e8 RSI: 00007f8a52614010 RDI: 00007f8a522864e8 > [ 30.951388] RBP: 00007fff178b8c50 R08: 00000000000346c8 R09: 00007f8a52272910 > [ 30.951566] R10: 00007f8a528121e0 R11: 0000000000000000 R12: 00007fff178b8be0 > [ 30.951744] R13: 00007fff178b8be0 R14: 00007f8a528121e0 R15: 00007f8a52200000 > [ 30.951955] </TASK> > [ 31.029030] systemd-coredump[502]: Process 383 (systemd-journal) of user 0 terminated abnormally with signal 11/SEGV, processing... > [ 32.091594] (sd-parse-elf)[517]: segfault at 1fe2948d1b686 ip 00007f8a5233c790 sp 00007fff178b8728 error 4 in libsystemd-shared-256.so[13c790,7f8a52287000+28c000] likely on CPU 0 (core 0, socket 0) > [ 32.092141] Code: c3 e8 3c 82 ff ff c7 00 0c 00 00 00 eb d0 4c 89 4c 24 18 44 89 44 24 14 89 54 24 10 48 89 74 24 08 e8 36 ff ff ff 4c 8b 4c 24 <18> 44 8b 44 24 14 8b 54 24 10 48 8b 74 24 08 e9 50 ff ff ff 48 89 > [ 32.094844] coredump: 517((sd-parse-elf)): RLIMIT_CORE is set to 1, aborting core > [ 32.104636] systemd-coredump[502]: Process 383 (systemd-journal) of user 0 dumped core. > [ 32.106806] systemd-coredump[502]: Coredump diverted to /var/lib/systemd/coredump/core.systemd-journal.0.1a33f3ab40664e608ad2005d7974ed9d.383.1729181777000000.zst > [ 32.383768] BUG: Bad page state in process cp pfn:0420c > [ 32.384049] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x146 pfn:0x420c > [ 32.384373] flags: 0xffffc000000000(node=0|zone=1|lastcpupid=0x1ffff) > [ 32.384917] page_type: f0(buddy) > [ 32.385146] raw: 00ffffc000000000 ffa3810300152108 ffa3810300106208 0000000000000000 > [ 32.385675] raw: 0000000000000146 0000000000000001 00000000f0000000 0000000000000000 > [ 32.386105] page dumped because: nonzero mapcount > [ 32.386399] Modules linked in: nf_tables libcrc32c sch_fq_codel fuse configfs efi_pstore loop tun tap macvlan bridge stp llc nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 overlay 9p ext4 crc32c_generic crc16 mbcache jbd2 9pnet_virtio 9pnet hid_generic usbhid hid netfs sr_mod virtio_net cdrom atkbd virtio_blk net_failover libps2 failover vivaldi_fmap crc32c_intel ata_piix libata scsi_mod uhci_hcd ehci_hcd virtio_pci virtio_pci_legacy_dev i8042 virtio_pci_modern_dev scsi_common serio rtc_cmos dm_mod dax virtio_gpu virtio_dma_buf virtio_rng rng_core virtio_console virtio_balloon virtio virtio_ring > [ 32.389366] CPU: 0 UID: 0 PID: 522 Comm: cp Tainted: G B D 6.12.0-rc3 #1-NixOS > [ 32.389750] Tainted: [B]=BAD_PAGE, [D]=DIE > [ 32.389931] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 > [ 32.390370] Call Trace: > [ 32.390536] <TASK> > [ 32.390669] dump_stack_lvl+0x64/0x90 > [ 32.390878] bad_page+0x70/0x110 > [ 32.391056] free_unref_page+0x363/0x4f0 > [ 32.391257] p9_release_pages+0x41/0x90 [9pnet] > [ 32.391627] p9_virtio_zc_request+0x3d4/0x720 [9pnet_virtio] > [ 32.391896] ? p9pdu_finalize+0x32/0xa0 [9pnet] > [ 32.392153] p9_client_zc_rpc.constprop.0+0x102/0x310 [9pnet] > [ 32.392447] ? kmem_cache_free+0x36/0x370 > [ 32.392703] p9_client_read_once+0x1a6/0x310 [9pnet] > [ 32.392992] p9_client_read+0x56/0x80 [9pnet] > [ 32.393238] v9fs_issue_read+0x50/0xd0 [9p] > [ 32.393467] netfs_read_to_pagecache+0x20c/0x480 [netfs] > [ 32.393832] netfs_readahead+0x225/0x330 [netfs] > [ 32.394154] read_pages+0x6a/0x250 > [ 32.394345] page_cache_ra_unbounded+0x188/0x200 > [ 32.394600] filemap_get_pages+0x13e/0x6d0 > [ 32.394830] filemap_read+0xef/0x370 > [ 32.395056] netfs_buffered_read_iter+0x7f/0xb0 [netfs] > [ 32.395402] do_iter_readv_writev+0x1d8/0x240 > [ 32.395660] vfs_iter_read+0xed/0x150 > [ 32.395853] backing_file_read_iter+0x16c/0x1c0 > [ 32.396074] ovl_read_iter+0xca/0xf0 [overlay] > [ 32.396367] ? __pfx_ovl_file_accessed+0x10/0x10 [overlay] > [ 32.396637] vfs_read+0x29f/0x380 > [ 32.396764] ksys_read+0x6f/0xf0 > [ 32.396879] do_syscall_64+0xb7/0x210 > [ 32.397002] entry_SYSCALL_64_after_hwframe+0x77/0x7f > [ 32.397161] RIP: 0033:0x7efd30243721 > [ 32.397285] Code: f7 d8 64 89 02 b8 ff ff ff ff eb bb e8 08 ba 01 00 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 80 3d 45 f9 0e 00 00 74 23 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 77 31 d2 31 c9 31 f6 31 ff 45 31 c0 45 31 db > [ 32.397784] RSP: 002b:00007ffd8abda858 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 > [ 32.398012] RAX: ffffffffffffffda RBX: 0000000000040000 RCX: 00007efd30243721 > [ 32.398204] RDX: 0000000000040000 RSI: 00007efd300fe000 RDI: 0000000000000003 > [ 32.398389] RBP: 0000000006442202 R08: 0000000000000000 R09: 0000000000000000 > [ 32.398579] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff > [ 32.398801] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > [ 32.398999] </TASK> > [ 32.603411] traps: udevadm[386] general protection fault ip:8548050f00005413 sp:7ffef7804f08 error:0 > [ 33.680055] traps: cp[562] general protection fault ip:7fb9b5f50141 sp:7ffd5fe41760 error:0 in ld-linux-x86-64.so.2[4141,7fb9b5f4d000+29000] > [ 34.458402] traps: (udev-worker)[548] general protection fault ip:7f4ccccc5a24 sp:7ffed3928660 error:0 in libsystemd-shared-256.so[2c5a24,7f4ccca87000+28c000] > [ 34.857113] BUG: Bad page state in process (udev-worker) pfn:05ec8 > [ 34.857841] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x7f8a5153f pfn:0x5ec8 > [ 34.858082] flags: 0xffffc000000000(node=0|zone=1|lastcpupid=0x1ffff) > [ 34.858259] raw: 00ffffc000000000 dead000000000100 dead000000000122 0000000000000000 > [ 34.858457] raw: 00000007f8a5153f 0000000000000000 00000001ffffffff 0000000000000000 > [ 34.858721] page dumped because: nonzero _refcount > [ 34.858845] Modules linked in: ata_generic pata_acpi xt_pkttype xt_LOG nf_log_syslog xt_tcpudp nft_compat nf_tables libcrc32c sch_fq_codel fuse configfs efi_pstore loop tun tap macvlan bridge stp llc nfnetlink dmi_sysfs qemu_fw_cfg ip_tables x_tables autofs4 overlay 9p ext4 crc32c_generic crc16 mbcache jbd2 9pnet_virtio 9pnet hid_generic usbhid hid netfs sr_mod virtio_net cdrom atkbd virtio_blk net_failover libps2 failover vivaldi_fmap crc32c_intel ata_piix libata scsi_mod uhci_hcd ehci_hcd virtio_pci virtio_pci_legacy_dev i8042 virtio_pci_modern_dev scsi_common serio rtc_cmos dm_mod dax virtio_gpu virtio_dma_buf virtio_rng rng_core virtio_console virtio_balloon virtio virtio_ring > [ 34.860579] CPU: 0 UID: 0 PID: 576 Comm: (udev-worker) Tainted: G B D 6.12.0-rc3 #1-NixOS > [ 34.860837] Tainted: [B]=BAD_PAGE, [D]=DIE > [ 34.860945] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 > [ 34.861214] Call Trace: > [ 34.861299] <TASK> > [ 34.861382] dump_stack_lvl+0x64/0x90 > [ 34.861506] bad_page+0x70/0x110 > [ 34.861630] get_page_from_freelist+0x9bf/0x1910 > [ 34.861776] ? __memcg_slab_post_alloc_hook+0x212/0x3b0 > [ 34.861936] __alloc_pages_noprof+0x1a3/0x1130 > [ 34.862066] ? bpf_prog_e8932b6bae2b9745_restrict_filesystems+0xb7/0x132 > [ 34.862321] ? mntput_no_expire+0x4a/0x260 > [ 34.862447] alloc_pages_mpol_noprof+0x8f/0x1f0 > [ 34.862580] folio_alloc_mpol_noprof+0x14/0x40 > [ 34.862706] vma_alloc_folio_noprof+0x6b/0xd0 > [ 34.862869] do_wp_page+0x184/0xce0 > [ 34.862990] __handle_mm_fault+0xb1d/0xfd0 > [ 34.863124] handle_mm_fault+0x17f/0x2e0 > [ 34.863241] do_user_addr_fault+0x177/0x6b0 > [ 34.863371] exc_page_fault+0x71/0x160 > [ 34.863488] asm_exc_page_fault+0x26/0x30 > [ 34.863609] RIP: 0033:0x7f4ccc8a85fa > [ 34.863726] Code: 84 0a ff ff ff 48 8d 7d 10 48 8b 04 fa a8 0f 0f 85 ab 01 00 00 48 89 c6 83 e9 01 48 c1 ee 0c 48 33 30 48 89 34 fa 66 89 0c 6a <48> c7 40 08 00 00 00 00 48 83 c4 10 5b 5d 41 5c 31 d2 31 c9 31 f6 > [ 34.864203] RSP: 002b:00007ffed3928560 EFLAGS: 00010202 > [ 34.864347] RAX: 000055b5b96227d0 RBX: 000000000000008d RCX: 0000000000000001 > [ 34.864522] RDX: 000055b5b95e2010 RSI: 000055b5b96226b0 RDI: 0000000000000018 > [ 34.864695] RBP: 0000000000000008 R08: 0000000000000000 R09: 000000000000008b > [ 34.864869] R10: 0000000000000000 R11: 0000000000000000 R12: fffffffffffffec0 > [ 34.865070] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > [ 34.865264] </TASK> > [ 35.198281] traps: (udev-worker)[575] general protection fault ip:7f4ccccc5a24 sp:7ffed3928660 error:0 in libsystemd-shared-256.so[2c5a24,7f4ccca87000+28c000] > [ 35.276005] traps: (udev-worker)[574] general protection fault ip:7f4ccccc5a24 sp:7ffed3928660 error:0 in libsystemd-shared-256.so[2c5a24,7f4ccca87000+28c000] > [ 36.337298] mousedev: PS/2 mouse device common for all mice > [ 36.536129] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input3 > [ 36.545369] ACPI: button: Power Button [PWRF] > [ 36.832638] parport_pc 00:03: reported by Plug and Play ACPI > [ 36.845890] parport0: PC-style at 0x378, irq 7 [PCSPP(,...)] > [ 36.883278] Floppy drive(s): fd0 is 2.88M AMI BIOS > [ 36.900149] FDC 0 is a S82078B > [ 37.183825] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0x700, revision 0 > [ 37.190598] i2c i2c-0: Memory type 0x07 not supported yet, not instantiating SPD > [ 37.281672] input: QEMU Virtio Keyboard as /devices/pci0000:00/0000:00:0a.0/virtio7/input/input4 > [ 37.418980] bochs-drm 0000:00:02.0: vgaarb: deactivate vga console > [ 37.432711] Console: switching to colour dummy device 80x25 > [ 37.443402] [drm] Found bochs VGA, ID 0xb0c5. > [ 37.443655] [drm] Framebuffer size 16384 kB @ 0xfd000000, mmio @ 0xfebd0000. > [ 37.457344] [drm] Found EDID data blob. > [ 37.479602] [drm] Initialized bochs-drm 1.0.0 for 0000:00:02.0 on minor 0 > [ 37.551512] fbcon: bochs-drmdrmfb (fb0) is primary device > [ 37.585358] Console: switching to colour frame buffer device 160x50 > [ 37.605472] bochs-drm 0000:00:02.0: [drm] fb0: bochs-drmdrmfb frame buffer device > [ 37.937650] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input5 > [ 37.955888] cryptd: max_cpu_qlen set to 1000 > [ 38.152679] AES CTR mode by8 optimization enabled > [ 38.900417] ppdev: user-space parallel port driver > [ 39.881616] kvm_amd: Nested Virtualization enabled > [ 39.881967] kvm_amd: Nested Paging enabled > [ 39.882697] kvm_amd: Virtual GIF supported > [ 39.882869] kvm_amd: PMU virtualization is disabled > > The QEMU command line: > > qemu-kvm -cpu max -name machine -m 1024 -smp 1 -device virtio-rng-pci -net > nic,netdev=user.0,model=virtio -netdev user,id=user.0, -virtfs > local,path=/nix/store,security_model=none,mount_tag=nix-store -virtfs > local,path=/build/shared-xchg,security_model=none,mount_tag=shared > -virtfs > local,path=/build/vm-state-machine/xchg,security_model=none,mount_tag=xchg > -drive > cache=writeback,file=/build/vm-state-machine/machine.qcow2,id=drive1,if=none,index=1,werror=report > -device virtio-blk-pci,bootindex=1,drive=drive1,serial=root -device > virtio-net-pci,netdev=vlan1,mac=52:54:00:12:01:01 -netdev > vde,id=vlan1,sock=/build/vde1.ctl -device virtio-keyboard -usb -device > usb-tablet,bus=usb-bus.0 -kernel > /nix/store/rv2vrmmg964wz19162sxxfwf3ika7y6b-nixos-system-machine-test/kernel > -initrd > /nix/store/vpp0qbjqpihfz7ikg1q63fmi4d28wrva-initrd-linux-6.12.0/initrd > -append console=ttyS0 console=tty0 panic=1 boot.panic_on_fail > clocksource=acpi_pm loglevel=7 net.ifnames=0 > init=/nix/store/rv2vrmmg964wz19162sxxfwf3ika7y6b-nixos-system-machine-test/init > regInfo=/nix/store/f5nyq4ykvynvzvwa7x9rcisfhabjs43s-closure-info/registration > console=ttyS0 -qmp unix:/build/vm-state-machine/qmp,server=on,wait=off > -monitor unix:/build/vm-state-machine/monitor -chardev > socket,id=shell,path=/build/vm-state-machine/shell -device virtio-serial > -device virtconsole,chardev=shell -device virtio-rng-pci -serial stdio > -no-reboot -nographic > > Nix command line to reproduce, with nixpkgs commit, > 9ed9b410adb43f959316d8a3919dabab1ddb396a > > nix-build nixos/tests/kernel-generic.nix -A linux_testing > > regards, > -antony
