Description
In the Linux kernel, the following vulnerability has been resolved: sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK 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 ]---
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 8fbb57eabfc8ae67115cb47f904614c99d626a89
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before f8f26cf69003a37ffa947631fc0e6fe6daee624a
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 77755dc95ff2f9a3e473acc1e039f498629949ea
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before e2b91997db286a5dd3cca6d5d9c20004851f22eb
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 2b6b8e011fab680a223b5e07a3c64774156ec6fe
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 09faf32c682ea4a547200b8b9e04d8b3c8e84b55
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 39373f6f89f52770a5405d30dddd08a27d097872
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 701e32900683378d93693fec15d133e2c5f7ada2
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 3c891f7c6a4e90bb1199497552f24b26e46383bc
4.19.325 (semver)
5.4.287 (semver)
5.10.231 (semver)
5.15.174 (semver)
6.1.120 (semver)
6.6.64 (semver)
6.11.11 (semver)
6.12.2 (semver)
6.13 (original_commit_for_fix)
References
lists.debian.org/debian-lts-announce/2025/03/msg00001.html
git.kernel.org/...c/8fbb57eabfc8ae67115cb47f904614c99d626a89
git.kernel.org/...c/f8f26cf69003a37ffa947631fc0e6fe6daee624a
git.kernel.org/...c/77755dc95ff2f9a3e473acc1e039f498629949ea
git.kernel.org/...c/e2b91997db286a5dd3cca6d5d9c20004851f22eb
git.kernel.org/...c/2b6b8e011fab680a223b5e07a3c64774156ec6fe
git.kernel.org/...c/09faf32c682ea4a547200b8b9e04d8b3c8e84b55
git.kernel.org/...c/39373f6f89f52770a5405d30dddd08a27d097872
git.kernel.org/...c/701e32900683378d93693fec15d133e2c5f7ada2
git.kernel.org/...c/3c891f7c6a4e90bb1199497552f24b26e46383bc
