CVE-2022-50771: rcu: Fix __this_cpu_read() lockdep warning in rcu_force_quiescent_state()

Published Dec 24, 2025
·
Updated

In the Linux kernel, the following vulnerability has been resolved:

rcu: Fix thiscpuread() lockdep warning in rcuforcequiescentstate()

Running rcutorture with non-zero fqsduration module parameter in a kernel built with CONFIGPREEMPTION=y results in the following splat:

BUG: using thiscpuread() in preemptible [00000000] code: rcutorturefqs/398 caller is thiscpupreemptcheck+0x13/0x20 CPU: 3 PID: 398 Comm: rcutorturefqs Not tainted 6.0.0-rc1-yoctodev-standard+ Call Trace: <TASK> dumpstacklvl+0x5b/0x86 dumpstack+0x10/0x16 checkpreemptiondisabled+0xe5/0xf0 thiscpupreemptcheck+0x13/0x20 rcuforcequiescentstate.part.0+0x1c/0x170 rcuforcequiescentstate+0x1e/0x30 rcutorturefqs+0xca/0x160 ? rcutortureboost+0x430/0x430 kthread+0x192/0x1d0 ? kthreadcompleteandexit+0x30/0x30 retfromfork+0x22/0x30 </TASK>

The problem is that rcuforcequiescentstate() uses thiscpuread() in preemptible code instead of the proper rawcpuread(). This commit therefore changes thiscpuread() to rawcpuread().

Affected Software

178 affected componentsFixes available
linux_kernel=6.0.0-rc1-yoctodev-standard+
debian/linux<6.1.4-1
6.1.4-1
debian/linux<6.1.4-1
6.1.4-1
debian/linux<6.1.4-1
6.1.4-1
linux/kernel>=3.17.0<5.4.229
5.4.229
linux/kernel>=5.5.0<5.10.163
5.10.163
linux/kernel>=5.11.0<5.15.86
5.15.86
linux/kernel>=5.16.0<6.0.16
6.0.16
linux/kernel>=6.1.0<6.1.2
6.1.2
ubuntu/linux-aws*
ubuntu/linux-azure*
ubuntu/linux-lts-xenial*
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-aws-hwe*
ubuntu/linux-azure*
ubuntu/linux-gcp*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-kvm*
ubuntu/linux-oracle*
ubuntu/linux-fips*
ubuntu/linux-fips*
ubuntu/linux-aws-5.4<5.4.0-1097.105~18.04.1
5.4.0-1097.105~18.04.1
ubuntu/linux-azure-5.4<5.4.0-1104.110~18.04.1
5.4.0-1104.110~18.04.1
ubuntu/linux-gcp-5.4<5.4.0-1101.110~18.04.1
5.4.0-1101.110~18.04.1
ubuntu/linux-hwe-5.4<5.4.0-144.161~18.04.1
5.4.0-144.161~18.04.1
ubuntu/linux-ibm-5.4<5.4.0-1045.50~18.04.1
5.4.0-1045.50~18.04.1
ubuntu/linux-oracle-5.4<5.4.0-1094.103~18.04.1
5.4.0-1094.103~18.04.1
ubuntu/linux-raspi-5.4<5.4.0-1081.92~18.04.1
5.4.0-1081.92~18.04.1
ubuntu/linux*
ubuntu/linux-aws*
ubuntu/linux-aws-5.0*
ubuntu/linux-aws-5.3*
ubuntu/linux-azure*
ubuntu/linux-azure-4.15*
ubuntu/linux-azure-5.3*
ubuntu/linux-azure-edge*
ubuntu/linux-gcp*
ubuntu/linux-gcp-4.15*
ubuntu/linux-gcp-5.3*
ubuntu/linux-gke-4.15*
ubuntu/linux-gke-5.4*
ubuntu/linux-gkeop-5.4*
ubuntu/linux-hwe*
ubuntu/linux-hwe-edge*
ubuntu/linux-kvm*
ubuntu/linux-oem*
ubuntu/linux-oracle*
ubuntu/linux-oracle-5.0*
ubuntu/linux-oracle-5.3*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.4.0-144.161
5.4.0-144.161
ubuntu/linux-aws<5.4.0-1097.105
5.4.0-1097.105
ubuntu/linux-aws-5.15<5.15.0-1033.37~20.04.1
5.15.0-1033.37~20.04.1
ubuntu/linux-azure<5.4.0-1104.110
5.4.0-1104.110
ubuntu/linux-azure-5.15<5.15.0-1035.42~20.04.1
5.15.0-1035.42~20.04.1
ubuntu/linux-bluefield<5.4.0-1059.65
5.4.0-1059.65
ubuntu/linux-gcp<5.4.0-1101.110
5.4.0-1101.110
ubuntu/linux-gcp-5.15<5.15.0-1031.38~20.04.1
5.15.0-1031.38~20.04.1
ubuntu/linux-hwe-5.15<5.15.0-69.76~20.04.1
5.15.0-69.76~20.04.1
ubuntu/linux-ibm<5.4.0-1045.50
5.4.0-1045.50
ubuntu/linux-intel-iotg-5.15<5.15.0-1027.32~20.04.1
5.15.0-1027.32~20.04.1
ubuntu/linux-iot<5.4.0-1013.15
5.4.0-1013.15
ubuntu/linux-kvm<5.4.0-1087.93
5.4.0-1087.93
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-69.76~20.04.1
5.15.0-69.76~20.04.1
ubuntu/linux-nvidia-tegra-5.15<5.15.0-1014.14~20.04.1
5.15.0-1014.14~20.04.1
ubuntu/linux-oracle<5.4.0-1094.103
5.4.0-1094.103
ubuntu/linux-oracle-5.15<5.15.0-1032.38~20.04.1
5.15.0-1032.38~20.04.1
ubuntu/linux-raspi<5.4.0-1081.92
5.4.0-1081.92
ubuntu/linux-riscv-5.15<5.15.0-1030.34~20.04.1
5.15.0-1030.34~20.04.1
ubuntu/linux-xilinx-zynqmp<5.4.0-1022.26
5.4.0-1022.26
ubuntu/linux-aws-5.11*
ubuntu/linux-aws-5.13*
ubuntu/linux-aws-5.8*
ubuntu/linux-azure-5.11*
ubuntu/linux-azure-5.13*
ubuntu/linux-azure-5.8*
ubuntu/linux-azure-fde*
ubuntu/linux-gcp-5.11*
ubuntu/linux-gcp-5.13*
ubuntu/linux-gcp-5.8*
ubuntu/linux-gke*
ubuntu/linux-gke-5.15*
ubuntu/linux-gkeop*
ubuntu/linux-gkeop-5.15*
ubuntu/linux-hwe-5.11*
ubuntu/linux-hwe-5.13*
ubuntu/linux-hwe-5.8*
ubuntu/linux-intel-5.13*
ubuntu/linux-oem-5.10*
ubuntu/linux-oem-5.13*
ubuntu/linux-oem-5.6*
ubuntu/linux-oracle-5.11*
ubuntu/linux-oracle-5.13*
ubuntu/linux-oracle-5.8*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.11*
ubuntu/linux-riscv-5.8*
ubuntu/linux-aws-fips<5.4.0-1099.107+fips1
5.4.0-1099.107+fips1
ubuntu/linux-azure-fips<5.4.0-1104.110+fips1
5.4.0-1104.110+fips1
ubuntu/linux-fips<5.4.0-1073.82
5.4.0-1073.82
ubuntu/linux-gcp-fips<5.4.0-1101.110+fips1
5.4.0-1101.110+fips1
ubuntu/linux-aws-fips*
ubuntu/linux-azure-fips*
ubuntu/linux-fips*
ubuntu/linux-gcp-fips*
ubuntu/linux<5.15.0-69.76
5.15.0-69.76
ubuntu/linux-allwinner-5.19*
ubuntu/linux-aws<5.15.0-1033.37
5.15.0-1033.37
ubuntu/linux-aws-5.19*
ubuntu/linux-aws-6.2*
ubuntu/linux-aws-6.5*
ubuntu/linux-azure<5.15.0-1035.42
5.15.0-1035.42
ubuntu/linux-azure-5.19*
ubuntu/linux-azure-6.2*
ubuntu/linux-azure-6.5*
ubuntu/linux-azure-fde<5.15.0-1035.42.1
5.15.0-1035.42.1
ubuntu/linux-azure-fde-5.19*
ubuntu/linux-azure-fde-6.2*
ubuntu/linux-gcp<5.15.0-1031.38
5.15.0-1031.38
ubuntu/linux-gcp-5.19*
ubuntu/linux-gcp-6.2*
ubuntu/linux-gcp-6.5*
ubuntu/linux-gke<5.15.0-1030.35
5.15.0-1030.35
ubuntu/linux-gkeop<5.15.0-1017.22
5.15.0-1017.22
ubuntu/linux-hwe-5.19*
ubuntu/linux-hwe-6.2*
ubuntu/linux-hwe-6.5*
ubuntu/linux-ibm<5.15.0-1027.30
5.15.0-1027.30
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-intel-iotg<5.15.0-1027.32
5.15.0-1027.32
ubuntu/linux-kvm<5.15.0-1030.35
5.15.0-1030.35
ubuntu/linux-lowlatency<5.15.0-69.76
5.15.0-69.76
ubuntu/linux-lowlatency-hwe-5.19*
ubuntu/linux-lowlatency-hwe-6.2*
ubuntu/linux-lowlatency-hwe-6.5*
ubuntu/linux-nvidia<5.15.0-1023.23
5.15.0-1023.23
ubuntu/linux-nvidia-6.2*
ubuntu/linux-nvidia-6.5*
ubuntu/linux-oem-5.17*
ubuntu/linux-oem-6.0*
ubuntu/linux-oem-6.1*
ubuntu/linux-oem-6.5*
ubuntu/linux-oracle<5.15.0-1032.38
5.15.0-1032.38
ubuntu/linux-oracle-6.5*
ubuntu/linux-raspi<5.15.0-1026.28
5.15.0-1026.28
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-5.19*
ubuntu/linux-riscv-6.5*
ubuntu/linux-starfive-5.19*
ubuntu/linux-starfive-6.2*
ubuntu/linux-starfive-6.5*
ubuntu/linux-bluefield<5.15.0-1015.17
5.15.0-1015.17
ubuntu/linux-intel-iot-realtime<5.15.0-1023.28
5.15.0-1023.28
ubuntu/linux-realtime<5.15.0-1034.37
5.15.0-1034.37
ubuntu/linux-azure-6.11*
ubuntu/linux-gcp-6.11*
ubuntu/linux-hwe-6.11*
ubuntu/linux-lowlatency-hwe-6.11*
ubuntu/linux-nvidia-6.11*
ubuntu/linux-oem-6.11*
ubuntu/linux-oem-6.8*
ubuntu/linux-raspi-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-riscv-6.14*
ubuntu/linux-vmware*
debian/linux
6.1.176-16.1.190-16.12.107-16.12.116-17.2.15-17.3.4-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.4-1
  2. Upgrade

    Upgrade linux/Kernel to a version that resolves this vulnerability.

    Fixed in 5.4.229
  3. Upgrade

    Upgrade linux/Kernel to a version that resolves this vulnerability.

    Fixed in 5.10.163
  4. Upgrade

    Upgrade linux/Kernel to a version that resolves this vulnerability.

    Fixed in 5.15.86
  5. Upgrade

    Upgrade linux/Kernel to a version that resolves this vulnerability.

    Fixed in 6.0.16
  6. Upgrade

    Upgrade linux/Kernel to a version that resolves this vulnerability.

    Fixed in 6.1.2
  7. Upgrade

    Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1097.105~18.04.1
  8. Upgrade

    Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1104.110~18.04.1
  9. Upgrade

    Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1101.110~18.04.1
  10. Upgrade

    Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-144.161~18.04.1
  11. Upgrade

    Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1045.50~18.04.1
  12. Upgrade

    Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1094.103~18.04.1
  13. Upgrade

    Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.

    Fixed in 5.4.0-1081.92~18.04.1
  14. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.4.0-144.161
  15. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.4.0-1097.105
  16. Upgrade

    Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1033.37~20.04.1
  17. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.4.0-1104.110
  18. Upgrade

    Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1035.42~20.04.1
  19. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.4.0-1059.65
  20. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1101.110
  21. Upgrade

    Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1031.38~20.04.1
  22. Upgrade

    Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-69.76~20.04.1
  23. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1045.50
  24. Upgrade

    Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1027.32~20.04.1
  25. Upgrade

    Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.

    Fixed in 5.4.0-1013.15
  26. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.4.0-1087.93
  27. Upgrade

    Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-69.76~20.04.1
  28. Upgrade

    Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1014.14~20.04.1
  29. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.4.0-1094.103
  30. Upgrade

    Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1032.38~20.04.1
  31. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.4.0-1081.92
  32. Upgrade

    Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.

    Fixed in 5.15.0-1030.34~20.04.1
  33. Upgrade

    Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.

    Fixed in 5.4.0-1022.26
  34. Upgrade

    Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1099.107+fips1
  35. Upgrade

    Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1104.110+fips1
  36. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1073.82
  37. Upgrade

    Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.

    Fixed in 5.4.0-1101.110+fips1
  38. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 5.15.0-69.76
  39. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 5.15.0-1033.37
  40. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 5.15.0-1035.42
  41. Upgrade

    Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.

    Fixed in 5.15.0-1035.42.1
  42. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 5.15.0-1031.38
  43. Upgrade

    Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.

    Fixed in 5.15.0-1030.35
  44. Upgrade

    Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.

    Fixed in 5.15.0-1017.22
  45. Upgrade

    Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1027.30
  46. Upgrade

    Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.

    Fixed in 5.15.0-1027.32
  47. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 5.15.0-1030.35
  48. Upgrade

    Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.

    Fixed in 5.15.0-69.76
  49. Upgrade

    Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.

    Fixed in 5.15.0-1023.23
  50. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 5.15.0-1032.38
  51. Upgrade

    Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.

    Fixed in 5.15.0-1026.28
  52. Upgrade

    Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.

    Fixed in 5.15.0-1015.17
  53. Upgrade

    Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1023.28
  54. Upgrade

    Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.

    Fixed in 5.15.0-1034.37
  55. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.116-1Fixed in 7.2.15-1Fixed in 7.3.4-1

Event History

Dec 24, 2025
CVE Published
via MITRE·01:06 PM
Data Sourced
via MITRE·01:06 PM
Description
Data Sourced
via OSV·01:06 PM
DescriptionAffected Software
Data Sourced
via NVD·01:16 PM
Description
Nov 11, 2026
Data Sourced
via OSV·09:37 AM
Severity

Frequently Asked Questions

1

What is the severity of CVE-2022-50771?

CVE-2022-50771 is a moderate severity vulnerability in the Linux kernel that can cause issues during certain operations.

2

How do I fix CVE-2022-50771?

To resolve CVE-2022-50771, update your Linux kernel to a patched version that addresses this vulnerability.

3

What systems are affected by CVE-2022-50771?

CVE-2022-50771 specifically affects the Linux kernel version 6.0.0-rc1-yoctodev-standard+.

4

What is the potential impact of CVE-2022-50771?

The impact of CVE-2022-50771 includes possible failures in kernel operations that utilize the rcutorture tool.

5

When was CVE-2022-50771 reported?

CVE-2022-50771 was reported in 2022 as part of ongoing kernel updates addressing various vulnerabilities.

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