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Linux RT kernel bug in nfsd: nfsd4_open() calls smp_processor_id()
Posted by Anonymous on Wed 15th Feb 2023 10:20
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  1. [5524938.310977] ------------[ cut here ]------------
  2. [5524938.310980] WARNING: CPU: 3 PID: 1588167 at fs/nfsd/nfs4state.c:4988 nfsd4_process_open2+0xfc1/0x1780 [nfsd]
  3. [5524938.311018] Modules linked in: netlink_diag(E) bnep(E) isofs(E) cdrom(E) nf_tables(E) tun(E) macvtap(E) macvlan(E) tap(E) nfnetlink(E) bluetooth(E) jitterentropy_rng(E) drbg(E) ansi_cprng(E) ecdh_generic(E) ecc(E) crc16(E) kvm_intel(E) kvm(E) irqbypass(E) bridge(E) stp(E) llc(E) msr(E) rpcsec_gss_krb5(E) nfsv4(E) dns_resolver(E) nfs(E) nfs_ssc(E) fscache(E) rfkill(E) binfmt_misc(E) intel_rapl_msr(E) intel_rapl_common(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) snd_hda_codec_hdmi(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ghash_clmulni_intel(E) ledtrig_audio(E) aesni_intel(E) libaes(E) crypto_simd(E) cryptd(E) snd_hda_intel(E) glue_helper(E) snd_intel_dspcfg(E) soundwire_intel(E) rapl(E) soundwire_generic_allocation(E) intel_cstate(E) intel_uncore(E) at24(E) snd_soc_core(E) sg(E) snd_compress(E) soundwire_cadence(E) iTCO_wdt(E) snd_hda_codec(E) intel_pmc_bxt(E) iTCO_vendor_support(E) snd_hda_core(E) watchdog(E) snd_hwdep(E) soundwire_bus(E) snd_pcm(E) evdev(E)
  4. [5524938.311063]  snd_timer(E) snd(E) serio_raw(E) soundcore(E) pcspkr(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) parport_pc(E) grace(E) ppdev(E) lp(E) parport(E) sunrpc(E) fuse(E) configfs(E) ip_tables(E) x_tables(E) autofs4(E) btrfs(E) blake2b_generic(E) xor(E) hid_generic(E) usbhid(E) hid(E) raid6_pq(E) libcrc32c(E) crc32c_generic(E) sd_mod(E) t10_pi(E) crc_t10dif(E) crct10dif_generic(E) i915(E) video(E) i2c_algo_bit(E) ahci(E) libahci(E) ehci_pci(E) r8169(E) ehci_hcd(E) drm_kms_helper(E) crct10dif_pclmul(E) realtek(E) crct10dif_common(E) libata(E) mdio_devres(E) cec(E) crc32_pclmul(E) i2c_i801(E) usbcore(E) crc32c_intel(E) libphy(E) scsi_mod(E) i2c_smbus(E) lpc_ich(E) psmouse(E) usb_common(E) drm(E) button(E) [last unloaded: irqbypass]
  5. [5524938.311105] CPU: 3 PID: 1588167 Comm: nfsd Tainted: G S      W   E     5.10.0-11-rt-amd64 #1 Debian 5.10.92-1
  6. [5524938.311108] Hardware name: FUJITSU ESPRIMO P500/D2991-A1, BIOS V4.6.4.0 R1.9.0 for D2991-A1x 11/22/2011
  7. [5524938.311109] BUG: using smp_processor_id() in preemptible [00000000] code: nfsd/1588167
  8. [5524938.311111] caller is print_stop_info+0x1b/0x40
  9. [5524938.311116] CPU: 3 PID: 1588167 Comm: nfsd Tainted: G S      W   E     5.10.0-11-rt-amd64 #1 Debian 5.10.92-1
  10. [5524938.311118] Hardware name: FUJITSU ESPRIMO P500/D2991-A1, BIOS V4.6.4.0 R1.9.0 for D2991-A1x 11/22/2011
  11. [5524938.311119] Call Trace:
  12. [5524938.311124]  dump_stack+0x6b/0x83
  13. [5524938.311128]  check_preemption_disabled+0xcd/0xd0
  14. [5524938.311132]  print_stop_info+0x1b/0x40
  15. [5524938.311136]  ? nfsd4_process_open2+0xfc1/0x1780 [nfsd]
  16. [5524938.311160]  show_regs+0x15/0x50
  17. [5524938.311163]  __warn+0x7d/0xb0
  18. [5524938.311166]  ? nfsd4_process_open2+0xfc1/0x1780 [nfsd]
  19. [5524938.311189]  report_bug+0x9a/0xc0
  20. [5524938.311193]  handle_bug+0x35/0x80
  21. [5524938.311195]  exc_invalid_op+0x14/0x70
  22. [5524938.311198]  asm_exc_invalid_op+0x12/0x20
  23. [5524938.311202] RIP: 0010:nfsd4_process_open2+0xfc1/0x1780 [nfsd]
  24. [5524938.311225] Code: 00 00 4c 89 44 24 40 e8 dd 27 fe ff 4c 89 f7 48 89 44 24 48 e8 40 9f b5 c3 48 83 7c 24 48 00 4c 8b 44 24 40 0f 85 77 fc ff ff <0f> 0b e9 18 f6 ff ff 49 83 bd a0 00 00 00 00 0f 84 52 05 00 00 41
  25. [5524938.311227] RSP: 0018:ffffb90dc3a87ce0 EFLAGS: 00010246
  26. [5524938.311229] RAX: ffff9b7994763080 RBX: ffff9b79c52c91e0 RCX: 0000000000000000
  27. [5524938.311231] RDX: ffff9b7994763080 RSI: ffffffff84f10184 RDI: ffff9b7994763080
  28. [5524938.311232] RBP: ffffb90dc3a87dc0 R08: ffff9b7971a42e00 R09: ffff9b7bcf1b96e0
  29. [5524938.311234] R10: ffff9b79801df460 R11: 0000000000000000 R12: ffff9b79cdb061e0
  30. [5524938.311235] R13: ffff9b794cc51260 R14: ffff9b794cc51268 R15: ffff9b794cc51260
  31. [5524938.311241]  ? nfsd_permission+0x63/0xe0 [nfsd]
  32. [5524938.311262]  ? fh_verify+0x1d0/0x6b0 [nfsd]
  33. [5524938.311283]  nfsd4_open+0x3c4/0x750 [nfsd]
  34. [5524938.311306]  nfsd4_proc_compound+0x469/0x720 [nfsd]
  35. [5524938.311328]  nfsd_dispatch+0xd3/0x180 [nfsd]
  36. [5524938.311348]  svc_process_common+0x4c3/0x760 [sunrpc]
  37. [5524938.311395]  ? nfsd_svc+0x330/0x330 [nfsd]
  38. [5524938.311415]  ? nfsd_destroy+0x60/0x60 [nfsd]
  39. [5524938.311434]  svc_process+0xb7/0xf0 [sunrpc]
  40. [5524938.311470]  nfsd+0xed/0x150 [nfsd]
  41. [5524938.311490]  kthread+0x186/0x1a0
  42. [5524938.311494]  ? __kthread_parkme+0xa0/0xa0
  43. [5524938.311496]  ret_from_fork+0x22/0x30
  44. [5524938.311501] RIP: 0010:nfsd4_process_open2+0xfc1/0x1780 [nfsd]
  45. [5524938.311525] Code: 00 00 4c 89 44 24 40 e8 dd 27 fe ff 4c 89 f7 48 89 44 24 48 e8 40 9f b5 c3 48 83 7c 24 48 00 4c 8b 44 24 40 0f 85 77 fc ff ff <0f> 0b e9 18 f6 ff ff 49 83 bd a0 00 00 00 00 0f 84 52 05 00 00 41
  46. [5524938.311527] RSP: 0018:ffffb90dc3a87ce0 EFLAGS: 00010246
  47. [5524938.311529] RAX: ffff9b7994763080 RBX: ffff9b79c52c91e0 RCX: 0000000000000000
  48. [5524938.311530] RDX: ffff9b7994763080 RSI: ffffffff84f10184 RDI: ffff9b7994763080
  49. [5524938.311532] RBP: ffffb90dc3a87dc0 R08: ffff9b7971a42e00 R09: ffff9b7bcf1b96e0
  50. [5524938.311533] R10: ffff9b79801df460 R11: 0000000000000000 R12: ffff9b79cdb061e0
  51. [5524938.311534] R13: ffff9b794cc51260 R14: ffff9b794cc51268 R15: ffff9b794cc51260
  52. [5524938.311536] FS:  0000000000000000(0000) GS:ffff9b7c6fac0000(0000) knlGS:0000000000000000
  53. [5524938.311538] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  54. [5524938.311540] CR2: 00007fe60b7c30a0 CR3: 0000000107a10001 CR4: 00000000000606e0
  55. [5524938.311542] Call Trace:
  56. [5524938.311544]  ? nfsd_permission+0x63/0xe0 [nfsd]
  57. [5524938.311565]  ? fh_verify+0x1d0/0x6b0 [nfsd]
  58. [5524938.311586]  nfsd4_open+0x3c4/0x750 [nfsd]
  59. [5524938.311609]  nfsd4_proc_compound+0x469/0x720 [nfsd]
  60. [5524938.311632]  nfsd_dispatch+0xd3/0x180 [nfsd]
  61. [5524938.311652]  svc_process_common+0x4c3/0x760 [sunrpc]
  62. [5524938.311688]  ? nfsd_svc+0x330/0x330 [nfsd]
  63. [5524938.311708]  ? nfsd_destroy+0x60/0x60 [nfsd]
  64. [5524938.311727]  svc_process+0xb7/0xf0 [sunrpc]
  65. [5524938.311763]  nfsd+0xed/0x150 [nfsd]
  66. [5524938.311783]  kthread+0x186/0x1a0
  67. [5524938.311785]  ? __kthread_parkme+0xa0/0xa0
  68. [5524938.311788]  ret_from_fork+0x22/0x30
  69. [5524938.311793] ---[ end trace 0000000000000003 ]---

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