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modpost: Add .irqentry.text to OTHER_SECTIONS

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BugLink: https://bugs.launchpad.net/bugs/2102118

commit 7912405643a14b527cd4a4f33c1d4392da900888 upstream.

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 # needed for linux-5.4-y
Link: https://lore.kernel.org/all/20241128111844.GE10431@google.com/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Thomas Gleixner
2025-03-12 22:51:00 +09:00
committed by Stefan Bader
parent 129903f57f
commit bb305783b9
1 changed files with 1 additions and 1 deletions
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scripts/mod/modpost.c
+1 -1
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@@ -797,7 +797,7 @@ static void check_section(const char *modname, struct elf_info *elf,
".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