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x86/unwind/orc: Fix error path for bad ORC entry type

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commit a0f81bf268 upstream.

If the ORC entry type is unknown, nothing else can be done other than
reporting an error.  Exit the function instead of breaking out of the
switch statement.

Fixes: ee9f8fce99 ("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/a7fa668ca6eabbe81ab18b2424f15adbbfdc810a.1587808742.git.jpoimboe@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Josh Poimboeuf 2020-04-25 05:06:13 -05:00 • committed by Greg Kroah-Hartman
commit e356bf888c
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/unwind_orc.c
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@ -509,7 +509,7 @@ bool unwind_next_frame(struct unwind_state *state)
default:
orc_warn("unknown .orc_unwind entry type %d for ip %pB\n",
orc->type, (void *)orig_ip);
break;
goto err;
}
/* Find BP: */