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Diffstat (limited to 'arch/i386/kernel/alternative.c')
| -rw-r--r-- | arch/i386/kernel/alternative.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/i386/kernel/alternative.c b/arch/i386/kernel/alternative.c index dae3ded9041..c5d037c6095 100644 --- a/arch/i386/kernel/alternative.c +++ b/arch/i386/kernel/alternative.c @@ -336,11 +336,14 @@ void apply_paravirt(struct paravirt_patch_site *start, used = paravirt_ops.patch(p->instrtype, p->clobbers, p->instr, p->len); + BUG_ON(used > p->len); + /* Pad the rest with nops */ nop_out(p->instr + used, p->len - used); } - /* Sync to be conservative, in case we patched following instructions */ + /* Sync to be conservative, in case we patched following + * instructions */ sync_core(); } extern struct paravirt_patch_site __start_parainstructions[], |