Jur van der Burg writes via Kernel.org Bugzilla: I've got an instant crash when starting the nfs server on kernel 6.12.2. Previous kernels (at least up to 6.6.56) were fine: Dec 9 12:51:15 hostx kernel: [ 66.833082] RPC: Registered named UNIX socket transport module. Dec 9 12:51:15 hostx kernel: [ 66.833088] RPC: Registered udp transport module. Dec 9 12:51:15 hostx kernel: [ 66.833089] RPC: Registered tcp transport module. Dec 9 12:51:15 hostx kernel: [ 66.833090] RPC: Registered tcp-with-tls transport module. Dec 9 12:51:15 hostx kernel: [ 66.833091] RPC: Registered tcp NFSv4.1 backchannel transport module. Dec 9 12:51:17 hostx kernel: [ 68.010707] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory Dec 9 12:51:17 hostx kernel: [ 68.010740] NFSD: Using legacy client tracking operations. Dec 9 12:51:17 hostx kernel: [ 68.010744] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory Dec 9 12:51:17 hostx kernel: [ 68.010790] ------------[ cut here ]------------ Dec 9 12:51:17 hostx kernel: [ 68.010792] kernel BUG at fs/nfsd/nfs4recover.c:534! Dec 9 12:51:17 hostx kernel: [ 68.010808] Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI Dec 9 12:51:17 hostx kernel: [ 68.011526] CPU: 3 UID: 0 PID: 5020 Comm: rpc.nfsd Not tainted 6.12.2-0.1-vtserver #1 Dec 9 12:51:17 hostx kernel: [ 68.011921] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020 Dec 9 12:51:17 hostx kernel: [ 68.012320] RIP: 0010:nfsd4_legacy_tracking_init+0x20b/0x260 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.012843] Code: 48 8b 1c d8 e8 c6 e1 68 e0 48 8b bb 30 01 00 00 48 85 ff 74 10 e8 c5 81 8f e0 48 c7 83 30 01 00 00 00 00 00 00 44 89 e3 eb 8b <0f> 0b 48 c7 c6 80 97 ae a0 48 c7 c7 b8 de b3 a0 e8 70 62 66 e0 8b Dec 9 12:51:17 hostx kernel: [ 68.013647] RSP: 0018:ffffc900009bbce8 EFLAGS: 00010282 Dec 9 12:51:17 hostx kernel: [ 68.014043] RAX: 0000000000000049 RBX: 000000000000000b RCX: 0000000000000000 Dec 9 12:51:17 hostx kernel: [ 68.014437] RDX: 0000000000000000 RSI: ffffffff824792fb RDI: 00000000ffffffff Dec 9 12:51:17 hostx kernel: [ 68.014825] RBP: ffff888115dda000 R08: 00000000ffff7fff R09: 0000000000000058 Dec 9 12:51:17 hostx kernel: [ 68.015214] R10: 00000000ffff7fff R11: ffffffff82852f00 R12: ffff888115dda000 Dec 9 12:51:17 hostx kernel: [ 68.015602] R13: ffff888115dda000 R14: ffff888115dda000 R15: ffff8881172b9e40 Dec 9 12:51:17 hostx kernel: [ 68.015989] FS: 00007f99b2cb1740(0000) GS:ffff888237cc0000(0000) knlGS:0000000000000000 Dec 9 12:51:17 hostx kernel: [ 68.016383] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dec 9 12:51:17 hostx kernel: [ 68.016791] CR2: 00007f0f31eef190 CR3: 000000013f422003 CR4: 00000000001706f0 Dec 9 12:51:17 hostx kernel: [ 68.017237] Call Trace: Dec 9 12:51:17 hostx kernel: [ 68.017640] <TASK> Dec 9 12:51:17 hostx kernel: [ 68.018024] ? die+0x43/0xb0 Dec 9 12:51:17 hostx kernel: [ 68.018415] ? do_trap+0x119/0x150 Dec 9 12:51:17 hostx kernel: [ 68.018798] ? nfsd4_legacy_tracking_init+0x20b/0x260 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.019294] ? do_error_trap+0x87/0xc0 Dec 9 12:51:17 hostx kernel: [ 68.019692] ? nfsd4_legacy_tracking_init+0x20b/0x260 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.020179] ? exc_invalid_op+0x53/0x70 Dec 9 12:51:17 hostx kernel: [ 68.020560] ? nfsd4_legacy_tracking_init+0x20b/0x260 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.021031] ? asm_exc_invalid_op+0x16/0x20 Dec 9 12:51:17 hostx kernel: [ 68.021410] ? nfsd4_legacy_tracking_init+0x20b/0x260 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.021894] ? nfsd4_legacy_tracking_init+0xc4/0x260 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.022367] nfsd4_client_tracking_init+0x1a5/0x1e0 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.022862] nfs4_state_start_net+0x2d1/0x440 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.023347] nfsd_svc+0x1c5/0x330 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.023827] ? simple_strntoull+0xa8/0xc0 Dec 9 12:51:17 hostx kernel: [ 68.024203] write_threads+0xc8/0x1a0 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.024684] ? preempt_count_add+0x69/0xa0 Dec 9 12:51:17 hostx kernel: [ 68.025065] ? _copy_from_user+0x25/0x60 Dec 9 12:51:17 hostx kernel: [ 68.025449] ? _raw_spin_unlock+0x15/0x30 Dec 9 12:51:17 hostx kernel: [ 68.025850] ? simple_transaction_get+0xcb/0xe0 Dec 9 12:51:17 hostx kernel: [ 68.026233] ? __pfx_write_threads+0x10/0x10 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.026724] nfsctl_transaction_write+0x51/0xa0 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.027219] vfs_write+0x136/0x480 Dec 9 12:51:17 hostx kernel: [ 68.027610] ksys_write+0x71/0x100 Dec 9 12:51:17 hostx kernel: [ 68.027990] do_syscall_64+0x4b/0x110 Dec 9 12:51:17 hostx kernel: [ 68.028371] entry_SYSCALL_64_after_hwframe+0x76/0x7e Dec 9 12:51:17 hostx kernel: [ 68.028779] RIP: 0033:0x7f99b2679be4 Dec 9 12:51:17 hostx kernel: [ 68.029162] Code: 84 00 00 00 00 00 48 8b 05 09 84 20 00 c3 0f 1f 84 00 00 00 00 00 8b 05 0a c8 20 00 48 63 ff 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 f3 c3 66 90 55 53 48 89 d5 48 89 f3 48 83 Dec 9 12:51:17 hostx kernel: [ 68.029994] RSP: 002b:00007ffdd307a0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 Dec 9 12:51:17 hostx kernel: [ 68.030427] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f99b2679be4 Dec 9 12:51:17 hostx kernel: [ 68.030857] RDX: 0000000000000002 RSI: 0000000000608600 RDI: 0000000000000003 Dec 9 12:51:17 hostx kernel: [ 68.031291] RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000000 Dec 9 12:51:17 hostx kernel: [ 68.031748] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 Dec 9 12:51:17 hostx kernel: [ 68.032181] R13: 0000000000000001 R14: 0000000000000000 R15: 00007ffdd307bde6 Dec 9 12:51:17 hostx kernel: [ 68.032610] </TASK> Dec 9 12:51:17 hostx kernel: [ 68.033015] Modules linked in: nfsd auth_rpcgss nfs_acl lockd grace sunrpc iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi target_core_mod usbip_host vhci_hcd usbip_core vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock veth bridge stp llc crc32c_intel ghash_clmulni_intel aesni_intel crypto_simd cryptd rapl vmwgfx drm_ttm_helper ttm drm_kms_helper drm pata_acpi cpuspeed vmw_balloon uhci_hcd sr_mod psmouse e1000e serio_raw pcspkr vmxnet3 ehci_pci e1000 vmw_vmci cdrom ehci_hcd vmw_pvscsi i2c_piix4 i2c_smbus ac button usbhid xhci_pci xhci_hcd usbcore usb_common dm_multipath dm_mod dax nvme nvme_core virtio_net net_failover failover virtio_scsi virtio_blk virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio_ring virtio ata_generic pata_atiixp fan thermal Dec 9 12:51:17 hostx kernel: [ 68.035844] ---[ end trace 0000000000000000 ]--- Dec 9 12:51:17 hostx kernel: [ 68.036353] RIP: 0010:nfsd4_legacy_tracking_init+0x20b/0x260 [nfsd] Dec 9 12:51:17 hostx kernel: [ 68.036946] Code: 48 8b 1c d8 e8 c6 e1 68 e0 48 8b bb 30 01 00 00 48 85 ff 74 10 e8 c5 81 8f e0 48 c7 83 30 01 00 00 00 00 00 00 44 89 e3 eb 8b <0f> 0b 48 c7 c6 80 97 ae a0 48 c7 c7 b8 de b3 a0 e8 70 62 66 e0 8b Dec 9 12:51:17 hostx kernel: [ 68.037974] RSP: 0018:ffffc900009bbce8 EFLAGS: 00010282 Dec 9 12:51:17 hostx kernel: [ 68.038509] RAX: 0000000000000049 RBX: 000000000000000b RCX: 0000000000000000 Dec 9 12:51:17 hostx kernel: [ 68.039021] RDX: 0000000000000000 RSI: ffffffff824792fb RDI: 00000000ffffffff Dec 9 12:51:17 hostx kernel: [ 68.039562] RBP: ffff888115dda000 R08: 00000000ffff7fff R09: 0000000000000058 Dec 9 12:51:17 hostx kernel: [ 68.040074] R10: 00000000ffff7fff R11: ffffffff82852f00 R12: ffff888115dda000 Dec 9 12:51:17 hostx kernel: [ 68.040618] R13: ffff888115dda000 R14: ffff888115dda000 R15: ffff8881172b9e40 Dec 9 12:51:17 hostx kernel: [ 68.041135] FS: 00007f99b2cb1740(0000) GS:ffff888237cc0000(0000) knlGS:0000000000000000 Dec 9 12:51:17 hostx kernel: [ 68.041692] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dec 9 12:51:17 hostx kernel: [ 68.042230] CR2: 00007f0f31eef190 CR3: 000000013f422003 CR4: 00000000001706f0 I found one reference to the same issue but no solution: https://www.mail-archive.com/debian-kernel@xxxxxxxxxxxxxxxx/msg139065.html This is 100% reproducable at will. View: https://bugzilla.kernel.org/show_bug.cgi?id=219580#c0 You can reply to this message to join the discussion. -- Deet-doot-dot, I am a bot. Kernel.org Bugzilla (bugspray 0.1-dev)
