[glibc] elf/tlsdeschtab.h: Add the Malloc return value check in _dl_make_tlsdesc_dynamic()

[glibc] elf/tlsdeschtab.h: Add the Malloc return value check in _dl_make_tlsdesc_dynamic()

[Szabolcs Nagy]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d1d0162e50afe7fa1e2fc4a901eb411db48acd7b

commit d1d0162e50afe7fa1e2fc4a901eb411db48acd7b
Author: Xiaoming Ni <nixiaoming@huawei.com>
Date:   Fri Nov 4 17:30:00 2022 +0800

    elf/tlsdeschtab.h: Add the Malloc return value check in _dl_make_tlsdesc_dynamic()
    
    Check the return value of malloc based on the function header comment of
     _dl_make_tlsdesc_dynamic(). If the return value fails, NULL is returned.
    
    Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
    Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>

Diff:
---
 elf/tlsdeschtab.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/elf/tlsdeschtab.h b/elf/tlsdeschtab.h
index 8c02e45a49..82733159e3 100644
--- a/elf/tlsdeschtab.h
+++ b/elf/tlsdeschtab.h
@@ -110,6 +110,8 @@ _dl_make_tlsdesc_dynamic (struct link_map *map, size_t ti_offset)
     }
 
   *entry = td = malloc (sizeof (struct tlsdesc_dynamic_arg));
+  if (! td)
+    return 0;
   /* This may be higher than the map's generation, but it doesn't
      matter much.  Worst case, we'll have one extra DTV update per
      thread.  */