linux/arch
Huacai Chen e2b91997db sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
commit 3c891f7c6a upstream.

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 ]---

Cc: stable@vger.kernel.org
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-12-14 19:51:16 +01:00
..
alpha alpha: remove __init annotation from exported page_is_ram() 2023-08-16 18:22:03 +02:00
arc ARC: [plat-hsdk]: Remove misplaced interrupt-cells property 2024-05-02 16:24:44 +02:00
arm ARM: dts: cubieboard4: Fix DCDC5 regulator constraints 2024-12-14 19:50:48 +01:00
arm64 KVM: arm64: Ignore PMCNTENSET_EL0 while checking for overflow status 2024-12-14 19:51:13 +01:00
csky csky, hexagon: fix broken sys_sync_file_range 2024-07-05 09:14:48 +02:00
h8300 h8300: Fix build errors from do_exit() to make_task_dead() transition 2023-02-01 08:27:21 +01:00
hexagon hexagon: fix fadvise64_64 calling conventions 2024-07-05 09:14:48 +02:00
ia64 arch: Introduce CONFIG_FUNCTION_ALIGNMENT 2024-04-10 16:18:49 +02:00
m68k m68k: coldfire/device.c: only build FEC when HW macros are defined 2024-12-14 19:51:06 +01:00
microblaze microblaze: don't treat zero reserved memory regions as error 2024-10-17 15:10:38 +02:00
mips mips: asm: fix warning when disabling MIPS_FP_SUPPORT 2024-12-14 19:50:42 +01:00
nds32 exit: Add and use make_task_dead. 2023-02-01 08:27:20 +01:00
nios2 nios2: dts: Fix tse_mac "max-frame-size" property 2023-06-21 15:59:14 +02:00
openrisc openrisc: Call setup_memory() earlier in the init sequence 2024-09-04 13:23:27 +02:00
parisc parisc: fix a possible DMA corruption 2024-12-14 19:51:11 +01:00
powerpc powerpc/pseries: Fix KVM guest detection for disabling hardlockup detector 2024-12-14 19:51:13 +01:00
riscv riscv: Remove duplicated GET_RM 2024-11-08 16:25:55 +01:00
s390 s390/syscalls: Avoid creation of arch/arch/ directory 2024-12-14 19:50:43 +01:00
sh sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK 2024-12-14 19:51:16 +01:00
sparc sparc64: Fix incorrect function signature and add prototype for prom_cif_init 2024-08-19 05:45:04 +02:00
um um: vector: Do not use drvdata in release 2024-12-14 19:51:16 +01:00
x86 crypto: x86/aegis128 - access 32-bit arguments as 32-bit 2024-12-14 19:51:13 +01:00
xtensa xtensa: boot/lib: fix function prototypes 2023-10-06 13:18:14 +02:00
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
Kconfig cpu: Re-enable CPU mitigations by default for !X86 architectures 2024-05-02 16:24:48 +02:00