Package: nfs-kernel-server Version: 1:1.3.4-2.5+deb10u1 Severity: important
I am using Debian GNU/Linux 10.13, kernel 5.10.0-0.deb10.16-amd64 and libc6 2.28-10+deb10u1. As soon as the NFS server is accessed, I get a kernel panic and have to restart the server. With the kernel 5.10.0-0.bpo.15-amd64 the problem does not exist. As a workaround I have pinned the kernel. Sep 19 11:42:14 fs1 kernel: [ 9.923891] NFSD: Using UMH upcall client tracking operations. Sep 19 11:42:14 fs1 kernel: [ 9.923897] NFSD: starting 90-second grace period (net f0000098) Sep 19 11:42:20 fs1 kernel: [ 15.969957] ------------[ cut here ]------------ Sep 19 11:42:20 fs1 kernel: [ 15.970015] WARNING: CPU: 1 PID: 959 at fs/nfsd/nfs4state.c:4998 nfsd4_process_open2+0x1305/0x1510 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.970017] Modules linked in: cbc cts rpcsec_gss_krb5 binfmt_misc vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock xt_multiport xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c xt_comment iptable_filter quota_v2 quota_tree intel_rapl_msr intel_rapl_common crc32_pclmul vmwgfx nls_ascii nls_cp437 vfat ttm ghash_clmulni_intel fat drm_kms_helper aesni_intel libaes crypto_simd cec cryptd glue_helper vmw_balloon rapl drm vmw_vmci joydev evdev efi_pstore pcspkr serio_raw sg ac button nfsd nfs_acl lockd usbhid auth_rpcgss grace hid usbcore dm_mod sunrpc usb_common efivarfs ip_tables x_tables autofs4 ext4 crc16 mbcache jbd2 crc32c_generic sr_mod cdrom sd_mod ata_generic t10_pi crc_t10dif crct10dif_generic ata_piix crct10dif_pclmul crct10dif_common libata psmouse crc32c_intel vmw_pvscsi vmxnet3 scsi_mod i2c_piix4 Sep 19 11:42:20 fs1 kernel: [ 15.970119] CPU: 1 PID: 959 Comm: nfsd Not tainted 5.10.0-0.deb10.16-amd64 #1 Debian 5.10.127-2~bpo10+1 Sep 19 11:42:20 fs1 kernel: [ 15.970120] Hardware name: VMware, Inc. VMware7,1/440BX Desktop Reference Platform, BIOS VMW71.00V.16707776.B64.2008070230 08/07/2020 Sep 19 11:42:20 fs1 kernel: [ 15.970160] RIP: 0010:nfsd4_process_open2+0x1305/0x1510 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.970164] Code: ba 85 3f 89 c0 48 0f a3 05 38 4a eb c8 73 d9 48 8b 05 2f 08 04 00 48 85 c0 74 0d 48 8b 78 08 49 8d 75 1c e8 5d fe fc ff eb be <0f> 0b e9 0d f4 ff ff 0f 0b e9 8c f5 ff ff 48 c7 44 24 48 00 00 00 Sep 19 11:42:20 fs1 kernel: [ 15.970166] RSP: 0018:ffff9f0b406cfce0 EFLAGS: 00010246 Sep 19 11:42:20 fs1 kernel: [ 15.970168] RAX: 0000000000000000 RBX: ffff8ce4ddc011e0 RCX: ffff8ce4ca9946e0 Sep 19 11:42:20 fs1 kernel: [ 15.970169] RDX: 0000000000000001 RSI: ffff8ce4cb2337f8 RDI: ffff8ce4cb2337a4 Sep 19 11:42:20 fs1 kernel: [ 15.970170] RBP: ffff9f0b406cfdc0 R08: ffff8ce4cb2337a8 R09: ffff8ce4c45550c0 Sep 19 11:42:20 fs1 kernel: [ 15.970171] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8ce4cb2337a0 Sep 19 11:42:20 fs1 kernel: [ 15.970172] R13: 0000000000000000 R14: ffff8ce4cb2337a0 R15: ffff8ce4ddd99730 Sep 19 11:42:20 fs1 kernel: [ 15.970173] FS: 0000000000000000(0000) GS:ffff8ce5f7c80000(0000) knlGS:0000000000000000 Sep 19 11:42:20 fs1 kernel: [ 15.970174] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Sep 19 11:42:20 fs1 kernel: [ 15.970175] CR2: 00007fc1e1e7f710 CR3: 0000000184a0a003 CR4: 00000000000606e0 Sep 19 11:42:20 fs1 kernel: [ 15.970230] Call Trace: Sep 19 11:42:20 fs1 kernel: [ 15.970248] ? nfsd_permission+0x63/0xe0 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.970260] ? fh_verify+0x17a/0x6a0 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.970358] ? write_bytes_to_xdr_buf+0xbc/0xe0 [sunrpc] Sep 19 11:42:20 fs1 kernel: [ 15.971051] nfsd4_open+0x3a1/0x720 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.971142] nfsd4_proc_compound+0x355/0x680 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.971155] nfsd_dispatch+0xd4/0x180 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.971179] svc_process_common+0x392/0x6c0 [sunrpc] Sep 19 11:42:20 fs1 kernel: [ 15.971203] ? svc_recv+0x3c4/0x8a0 [sunrpc] Sep 19 11:42:20 fs1 kernel: [ 15.971214] ? nfsd_svc+0x300/0x300 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.971225] ? nfsd_destroy+0x60/0x60 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.971246] svc_process+0xb7/0xf0 [sunrpc] Sep 19 11:42:20 fs1 kernel: [ 15.971257] nfsd+0xe8/0x140 [nfsd] Sep 19 11:42:20 fs1 kernel: [ 15.971262] kthread+0x116/0x130 Sep 19 11:42:20 fs1 kernel: [ 15.971265] ? __kthread_cancel_work+0x40/0x40 Sep 19 11:42:20 fs1 kernel: [ 15.971269] ret_from_fork+0x22/0x30 Sep 19 11:42:20 fs1 kernel: [ 15.971272] ---[ end trace 4468d10badfc4017 ]---
