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LoongArch: Move jump_label_init() before parse_early_param()

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When enabling both CONFIG_MEM_ALLOC_PROFILING=y and
CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT=y, then diabling memory
profiling by adding the boot parameter 'sysctl.vm.mem_profiling=0' will
cause the kernel failed to boot.

After analysis, this is because jump_label_init() must be called before
parse_early_param(), the early param handlers may modify static keys by
static_branch_enable/disable().

Fix this by moving jump_label_init() to before parse_early_param(). The
solution is similar to other architectures.

Cc: <stable@vger.kernel.org>
Signed-off-by: Kanglong Wang <wangkanglong@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Kanglong Wang 2026-07-23 22:27:29 +08:00 committed by Huacai Chen
parent 7ea74820ed
commit ea68d444a6
1 changed files with 1 additions and 2 deletions
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3
arch/loongarch/kernel/setup.c
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@ -603,6 +603,7 @@ void __init setup_arch(char **cmdline_p)
memblock_init();
pagetable_init();
bootcmdline_init(cmdline_p);
jump_label_init(); /* Initialise the static keys for early params */
parse_early_param();
reserve_initrd_mem();
@ -610,8 +611,6 @@ void __init setup_arch(char **cmdline_p)
arch_mem_init(cmdline_p);
resource_init();
jump_label_init(); /* Initialise the static keys for paravirtualization */
#ifdef CONFIG_SMP
plat_smp_setup();
prefill_possible_map();