diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-24 08:47:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-24 08:47:33 -0700 |
| commit | c0e457851fffd90eac14ad2528dfea3994945c28 (patch) | |
| tree | 5735fee4d28530258d1fa9b83352300bc74e95bd /kernel | |
| parent | 7426cedc7dad67bf3c71ea6cc29ab7822e1a453f (diff) | |
| parent | 49faa77759b211fff344898edc23bb780707fff5 (diff) | |
Merge tag 'objtool-urgent-2021-06-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar:
"Address a number of objtool warnings that got reported.
No change in behavior intended, but code generation might be impacted
by commit 1f008d46f124 ("x86: Always inline task_size_max()")"
* tag 'objtool-urgent-2021-06-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/lockdep: Improve noinstr vs errors
x86: Always inline task_size_max()
x86/xen: Fix noinstr fail in exc_xen_unknown_trap()
x86/xen: Fix noinstr fail in xen_pv_evtchn_do_upcall()
x86/entry: Fix noinstr fail in __do_fast_syscall_32()
objtool/x86: Ignore __x86_indirect_alt_* symbols
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/locking/lockdep.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index 7641bd407239..e32313072506 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -843,7 +843,7 @@ static int count_matching_names(struct lock_class *new_class) } /* used from NMI context -- must be lockless */ -static __always_inline struct lock_class * +static noinstr struct lock_class * look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass) { struct lockdep_subclass_key *key; @@ -851,12 +851,14 @@ look_up_lock_class(const struct lockdep_map *lock, unsigned int subclass) struct lock_class *class; if (unlikely(subclass >= MAX_LOCKDEP_SUBCLASSES)) { + instrumentation_begin(); debug_locks_off(); printk(KERN_ERR "BUG: looking up invalid subclass: %u\n", subclass); printk(KERN_ERR "turning off the locking correctness validator.\n"); dump_stack(); + instrumentation_end(); return NULL; } |