glibc/backport-fix-pthread_create-and-dlopen-racing.patch
xujing 0d97c1aa48 elf: fix pthread_create and dlopen racing
(cherry picked from commit c1ac1c53cbb62cd213db8b007347f464286cc84d)
2021-12-02 20:40:29 +08:00

41 lines
1.2 KiB
Diff

From 4204b32bffc28772b7d026964f7ca325b00f7609 Mon Sep 17 00:00:00 2001
From: xujing <xujing99@huawei.com>
Date: Thu, 2 Dec 2021 11:53:30 +0800
Subject: [PATCH] fix pthread_create and dlopen racing.
reason: fix pthread_create and dlopen racing.
---
elf/dl-tls.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/elf/dl-tls.c b/elf/dl-tls.c
index c87caf13..1840f122 100644
--- a/elf/dl-tls.c
+++ b/elf/dl-tls.c
@@ -478,7 +478,8 @@ _dl_allocate_tls_init (void *result)
/* Keep track of the maximum generation number. This might
not be the generation counter. */
- assert (listp->slotinfo[cnt].gen <= GL(dl_tls_generation));
+ if (listp->slotinfo[cnt].gen > GL(dl_tls_generation))
+ _dl_printf("warning: listp->slotinfo[cnt].gen > GL(dl_tls_generation) !\n");
maxgen = MAX (maxgen, listp->slotinfo[cnt].gen);
dtv[map->l_tls_modid].pointer.val = TLS_DTV_UNALLOCATED;
@@ -514,7 +515,11 @@ _dl_allocate_tls_init (void *result)
break;
listp = listp->next;
- assert (listp != NULL);
+ if (listp == NULL)
+ {
+ _dl_printf("warning: listp == NULL !\n");
+ break;
+ }
}
/* The DTV version is up-to-date now. */
--
2.23.0