diff options
| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2020-04-25 05:03:08 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-04-25 12:22:29 +0200 |
| commit | 98d0c8ebf77e0ba7c54a9ae05ea588f0e9e3f46e (patch) | |
| tree | 3d3bfb9a7258948eb9af32f6a0388a6fe27fe4f2 /crypto/echainiv.c | |
| parent | f1d9a2abff66aa8156fbc1493abed468db63ea48 (diff) | |
x86/unwind/orc: Prevent unwinding before ORC initialization
If the unwinder is called before the ORC data has been initialized,
orc_find() returns NULL, and it tries to fall back to using frame
pointers. This can cause some unexpected warnings during boot.
Move the 'orc_init' check from orc_find() to __unwind_init(), so that it
doesn't even try to unwind from an uninitialized state.
Fixes: ee9f8fce9964 ("x86/unwind: Add the ORC unwinder")
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Dave Jones <dsj@fb.com>
Cc: Jann Horn <jannh@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: https://lore.kernel.org/r/069d1499ad606d85532eb32ce39b2441679667d5.1587808742.git.jpoimboe@redhat.com
Diffstat (limited to 'crypto/echainiv.c')
0 files changed, 0 insertions, 0 deletions