buildroot/package/frr/0002-lib-fix-elf_py-TLS-section-handling.patch

From 3942ee1f7bc754dd0dd9ae79f89d0f2635be334f Mon Sep 17 00:00:00 2001
From: David Lamparter <equinox@opensourcerouting.org>
Date: Wed, 10 Nov 2021 15:30:07 +0100
Subject: [PATCH] lib: fix elf_py TLS section handling

... need to ignore TLS sections, their address is effectively
meaningless but can overlap other sections we actually need to access.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>

[Retrieved from:
https://github.com/FRRouting/frr/commit/3942ee1f7bc754dd0dd9ae79f89d0f2635be334f]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 lib/elf_py.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/elf_py.c b/lib/elf_py.c
index 1c306893ad8..f230add6957 100644
--- a/lib/elf_py.c
+++ b/lib/elf_py.c
@@ -636,6 +636,9 @@ static Elf_Scn *elf_find_addr(struct elffile *ef, uint64_t addr, size_t *idx)
 		Elf_Scn *scn = elf_getscn(ef->elf, i);
 		GElf_Shdr _shdr, *shdr = gelf_getshdr(scn, &_shdr);
 
+		/* virtual address is kinda meaningless for TLS sections */
+		if (shdr->sh_flags & SHF_TLS)
+			continue;
 		if (addr < shdr->sh_addr ||
 		    addr >= shdr->sh_addr + shdr->sh_size)
 			continue;