From: Peter Zijlstra <peterz@infradead.org>
To: jpoimboe@redhat.com, alexandre.chartre@oracle.com
Cc: linux-kernel@vger.kernel.org, jthierry@redhat.com,
tglx@linutronix.de, x86@kernel.org, mbenes@suse.cz,
peterz@infradead.org
Subject: [PATCH v2 04/14] objtool: is_fentry_call() crashes if call has no destination
Date: Tue, 28 Apr 2020 21:11:05 +0200 [thread overview]
Message-ID: <20200428191659.618384136@infradead.org> (raw)
In-Reply-To: 20200428191101.886208539@infradead.org
From: Alexandre Chartre <alexandre.chartre@oracle.com>
Fix is_fentry_call() so that it works if a call has no destination
set (call_dest). This needs to be done in order to support intra-
function calls.
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200414103618.12657-2-alexandre.chartre@oracle.com
---
tools/objtool/check.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -1490,7 +1490,7 @@ static int decode_sections(struct objtoo
static bool is_fentry_call(struct instruction *insn)
{
- if (insn->type == INSN_CALL &&
+ if (insn->type == INSN_CALL && insn->call_dest &&
insn->call_dest->type == STT_NOTYPE &&
!strcmp(insn->call_dest->name, "__fentry__"))
return true;
next prev parent reply other threads:[~2020-04-28 19:20 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-28 19:11 [PATCH v2 00/14] objtool vs retpoline Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 01/14] objtool: Allow branches within the same alternative Peter Zijlstra
2020-04-28 19:53 ` Josh Poimboeuf
2020-04-28 19:11 ` [PATCH v2 02/14] objtool: Fix ORC vs alternatives Peter Zijlstra
2020-04-28 19:55 ` Josh Poimboeuf
2020-04-29 14:33 ` Miroslav Benes
2020-04-29 15:51 ` Peter Zijlstra
2020-04-29 16:41 ` Miroslav Benes
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 03/14] x86,smap: Fix smap_{save,restore}() alternatives Peter Zijlstra
2020-04-29 0:54 ` Brian Gerst
2020-04-29 8:30 ` Peter Zijlstra
2020-04-29 10:18 ` Peter Zijlstra
2020-04-29 12:12 ` Brian Gerst
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 19:11 ` Peter Zijlstra [this message]
2020-04-28 19:11 ` [PATCH v2 05/14] objtool: UNWIND_HINT_RET_OFFSET should not check registers Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 06/14] objtool: Rework allocating stack_ops on decode Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 07/14] objtool: Make handle_insn_ops() unconditional Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-05-07 12:38 ` Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 08/14] objtool: Remove INSN_STACK Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 09/14] objtool: Move the IRET hack into the arch decoder Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Miroslav Benes
2020-04-28 19:11 ` [PATCH v2 10/14] objtool: Add support for intra-function calls Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 11/14] x86/speculation: Change FILL_RETURN_BUFFER to work with objtool Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 12/14] x86: Simplify retpoline declaration Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 13/14] x86: Change {JMP,CALL}_NOSPEC argument Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 19:11 ` [PATCH v2 14/14] x86/retpoline: Fix retpoline unwind Peter Zijlstra
2020-05-01 18:22 ` [tip: objtool/core] " tip-bot2 for Peter Zijlstra
2020-04-28 20:17 ` [PATCH v2 00/14] objtool vs retpoline Josh Poimboeuf
2020-04-29 10:19 ` [PATCH v2.1 01-A/14] objtool: Remove check preventing branches within alternative Peter Zijlstra
2020-04-29 10:21 ` [PATCH v2.1 01-B/14] objtool: Uniquely identify alternative instruction groups Peter Zijlstra
2020-04-29 16:46 ` [PATCH v2 00/14] objtool vs retpoline Miroslav Benes
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