sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
Published Dec 27, 2024
5.5
MEDIUMCVSS 3.1
EPSS 0.25%
Description
When CONFIG_CPUMASK_OFFSTACK and CONFIG_DEBUG_PER_CPU_MAPS are selected, cpu_max_bits_warn() generates a runtime warning similar as below when showing /proc/cpuinfo. Fix this by using nr_cpu_ids (the runtime limit) instead of NR_CPUS to iterate CPUs.
[ 3.052463] ------------[ cut here ]------------ [ 3.059679] WARNING: CPU: 3 PID: 1 at include/linux/cpumask.h:108 show_cpuinfo+0x5e8/0x5f0 [ 3.070072] Modules linked in: efivarfs autofs4 [ 3.076257] CPU: 0 PID: 1 Comm: systemd Not tainted 5.19-rc5+ #1052 [ 3.099465] Stack : 9000000100157b08 9000000000f18530 9000000000cf846c 9000000100154000 [ 3.109127] 9000000100157a50 0000000000000000 9000000100157a58 9000000000ef7430 [ 3.118774] 90000001001578e8 0000000000000040 0000000000000020 ffffffffffffffff [ 3.128412] 0000000000aaaaaa 1ab25f00eec96a37 900000010021de80 900000000101c890 [ 3.138056] 0000000000000000 0000000000000000 0000000000000000 0000000000aaaaaa [ 3.147711] ffff8000339dc220 0000000000000001 0000000006ab4000 0000000000000000 [ 3.157364] 900000000101c998 0000000000000004 9000000000ef7430 0000000000000000 [ 3.167012] 0000000000000009 000000000000006c 0000000000000000 0000000000000000 [ 3.176641] 9000000000d3de08 9000000001639390 90000000002086d8 00007ffff0080286 [ 3.186260] 00000000000000b0 0000000000000004 0000000000000000 0000000000071c1c [ 3.195868] ... [ 3.199917] Call Trace: [ 3.203941] [<90000000002086d8>] show_stack+0x38/0x14c [ 3.210666] [<9000000000cf846c>] dump_stack_lvl+0x60/0x88 [ 3.217625] [<900000000023d268>] __warn+0xd0/0x100 [ 3.223958] [<9000000000cf3c90>] warn_slowpath_fmt+0x7c/0xcc [ 3.231150] [<9000000000210220>] show_cpuinfo+0x5e8/0x5f0 [ 3.238080] [<90000000004f578c>] seq_read_iter+0x354/0x4b4 [ 3.245098] [<90000000004c2e90>] new_sync_read+0x17c/0x1c4 [ 3.252114] [<90000000004c5174>] vfs_read+0x138/0x1d0 [ 3.258694] [<90000000004c55f8>] ksys_read+0x70/0x100 [ 3.265265] [<9000000000cfde9c>] do_syscall+0x7c/0x94 [ 3.271820] [<9000000000202fe4>] handle_syscall+0xc4/0x160 [ 3.281824] ---[ end trace 8b484262b4b8c24c ]---
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- 2.6.12
Unaffected
- ≥ 0, < 2.6.12
- ≥ 4.19.325, ≤ 4.19.*
- ≥ 5.10.231, ≤ 5.10.*
- ≥ 5.15.174, ≤ 5.15.*
- ≥ 5.4.287, ≤ 5.4.*
- ≥ 6.1.120, ≤ 6.1.*
- ≥ 6.11.11, ≤ 6.11.*
- ≥ 6.12.2, ≤ 6.12.*
- 6.13
- ≥ 6.6.64, ≤ 6.6.*
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Linux | Linux | unaffected | Affected
|
| Linux | Linux | affected | Affected
Unaffected
|
- < 4.19.325
- ≥ 4.20 · < 5.4.287
- ≥ 5.5 · < 5.10.231
- ≥ 5.11 · < 5.15.174
- ≥ 5.16 · < 6.1.120
- ≥ 6.2 · < 6.6.64
- ≥ 6.7 · < 6.11.11
- ≥ 6.12 · < 6.12.2
No data.
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (16)
- https://access.redhat.com/security/cve/CVE-2022-49034 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2334366 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-53919 Advisory
- https://git.kernel.org/stable/c/09faf32c682ea4a547200b8b9e04d8b3c8e84b55 Patch
- https://git.kernel.org/stable/c/2b6b8e011fab680a223b5e07a3c64774156ec6fe Patch
- https://git.kernel.org/stable/c/39373f6f89f52770a5405d30dddd08a27d097872 Patch
- https://git.kernel.org/stable/c/3c891f7c6a4e90bb1199497552f24b26e46383bc Patch
- https://git.kernel.org/stable/c/701e32900683378d93693fec15d133e2c5f7ada2 Patch
- https://git.kernel.org/stable/c/77755dc95ff2f9a3e473acc1e039f498629949ea Patch
- https://git.kernel.org/stable/c/8fbb57eabfc8ae67115cb47f904614c99d626a89 Patch
- https://git.kernel.org/stable/c/e2b91997db286a5dd3cca6d5d9c20004851f22eb Patch
- https://git.kernel.org/stable/c/f8f26cf69003a37ffa947631fc0e6fe6daee624a Patch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lore.kernel.org/linux-cve-announce/2024122709-CVE-2022-49034-9cc5@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2022-49034
- https://www.cve.org/CVERecord?id=CVE-2022-49034
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
No data
GitHub
No data