diff options
Diffstat (limited to 'src/env/__stack_chk_fail.c')
| -rw-r--r-- | src/env/__stack_chk_fail.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/env/__stack_chk_fail.c b/src/env/__stack_chk_fail.c index daa1b078..00634d38 100644 --- a/src/env/__stack_chk_fail.c +++ b/src/env/__stack_chk_fail.c @@ -7,7 +7,13 @@ uintptr_t __stack_chk_guard; void __init_ssp(void *entropy) { - pthread_t self = __pthread_self_init(); + /* Here the thread pointer is used without checking whether + * it is available; this will crash if it's not. However, + * this function is only meant to be called if the program + * being run uses stack protector, and in that case, it would + * crash without a thread pointer anyway, so it's better to + * crash early before there is state to be lost on crash. */ + pthread_t self = __pthread_self(); uintptr_t canary; if (entropy) memcpy(&canary, entropy, sizeof canary); else canary = (uintptr_t)&canary * 1103515245; |