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From: Thomas Gleixner <tglx@linutronix.de>
To: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: 20241015061522.25288-1-rui.zhang@intel.com,
	Zhang Rui <rui.zhang@intel.com>,
	hpa@zytor.com, peterz@infradead.org, thorsten.blum@toblux.com,
	yuntao.wang@linux.dev, tony.luck@intel.com, len.brown@intel.com,
	srinivas.pandruvada@intel.com, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org, mingo@redhat.com, bp@alien8.de,
	dave.hansen@linux.intel.com, rafael.j.wysocki@intel.com,
	x86@kernel.org, linux-pm@vger.kernel.org,
	Sergey Senozhatsky <senozhatsky@chromium.org>,
	Masahiro Yamada <masahiroy@kernel.org>,
	Nathan Chancellor <nathan@kernel.org>,
	Nicolas Schier <nicolas@fjasle.eu>,
	linux-kbuild@vger.kernel.org
Subject: [PATCH] modpost: Add .irqentry.text to OTHER_SECTIONS
Date: Sun, 01 Dec 2024 12:17:30 +0100	[thread overview]
Message-ID: <87iks3wt2t.ffs@tglx> (raw)
In-Reply-To: <20241130114549.GI10431@google.com>

The compiler can fully inline the actual handler function of an interrupt
entry into the .irqentry.text entry point. If such a function contains an
access which has an exception table entry, modpost complains about a
section mismatch:

  WARNING: vmlinux.o(__ex_table+0x447c): Section mismatch in reference ...

  The relocation at __ex_table+0x447c references section ".irqentry.text"
  which is not in the list of authorized sections.

Add .irqentry.text to OTHER_SECTIONS to cure the issue.

Reported-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
---
 scripts/mod/modpost.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -785,7 +785,7 @@ static void check_section(const char *mo
 		".ltext", ".ltext.*"
 #define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \
 		".fixup", ".entry.text", ".exception.text", \
-		".coldtext", ".softirqentry.text"
+		".coldtext", ".softirqentry.text", ".irqentry.text"
 
 #define ALL_TEXT_SECTIONS  ".init.text", ".exit.text", \
 		TEXT_SECTIONS, OTHER_TEXT_SECTIONS

  reply	other threads:[~2024-12-01 11:17 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-28 11:18 bisected: [PATCH V4] x86/apic: Always explicitly disarm TSC-deadline timer Sergey Senozhatsky
2024-11-28 11:22 ` Sergey Senozhatsky
2024-11-30 11:21 ` Thomas Gleixner
2024-11-30 11:45   ` Sergey Senozhatsky
2024-12-01 11:17     ` Thomas Gleixner [this message]
2024-12-02  2:02       ` [PATCH] modpost: Add .irqentry.text to OTHER_SECTIONS Masahiro Yamada
2024-12-02 21:03         ` Thomas Gleixner
2024-12-03 15:27           ` Masahiro Yamada
2024-12-03 16:10             ` Thomas Gleixner
2024-12-02  4:10       ` Sergey Senozhatsky

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