From: Noam Camus <noamc@xxxxxxxxxx> Today bss/heap is placed above last loaded sections. Current check is only against TASK_SIZE, maybe since most architectures do: But this is not true for all of them and a gap between TASK_SIZE and STACK_TOP is possible and may be used for variant purposes. For example we use it for a special physical memory mapping. In such case of section in this gap we skip it for matter of heap/bss calculation. set_brk will never work for such case anyway. Signed-off-by: Noam Camus <noamc@xxxxxxxxxx> --- fs/binfmt_elf.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 6b65996..e445886 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -962,6 +962,9 @@ static int load_elf_binary(struct linux_binprm *bprm) k = elf_ppnt->p_vaddr + elf_ppnt->p_filesz; + if (k >= STACK_TOP) + continue; + if (k > elf_bss) elf_bss = k; if ((elf_ppnt->p_flags & PF_X) && end_code < k) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
