From: Ravikiran G Thirumalai Date: Tue, 23 Sep 2008 05:58:47 +0000 (-0700) Subject: x86: fix 27-rc crash on vsmp due to paravirt during module load X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=05e12e1c4c09cd35ac9f4e6af1e42b0036375d72;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git x86: fix 27-rc crash on vsmp due to paravirt during module load 27-rc fails to boot up if configured to use modules. Turns out vsmp_patch was marked __init, and vsmp_patch being the pvops 'patch' routine for vsmp, a call to vsmp_patch just turns out to execute a code page with series of 0xcc (POISON_FREE_INITMEM -- int3). vsmp_patch has been marked with __init ever since pvops, however, apply_paravirt can be called during module load causing calls to freed memory location. Since apply_paravirt can only be called during init/module load, make vsmp_patch with "__init_or_module" Signed-off-by: Ravikiran Thirumalai Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c index 0c029e8959c7..7766d36983fc 100644 --- a/arch/x86/kernel/vsmp_64.c +++ b/arch/x86/kernel/vsmp_64.c @@ -61,7 +61,7 @@ static void vsmp_irq_enable(void) native_restore_fl((flags | X86_EFLAGS_IF) & (~X86_EFLAGS_AC)); } -static unsigned __init vsmp_patch(u8 type, u16 clobbers, void *ibuf, +static unsigned __init_or_module vsmp_patch(u8 type, u16 clobbers, void *ibuf, unsigned long addr, unsigned len) { switch (type) {