When search_binary_handler() is called to find a handler for /sbin/modprobe it will end up in an infinite loop because it executes request_module() to load a binfmt module with /sbin/modprobe...
Running a x86_64 kernel without ia32 emulation and a x86 user land triggers this issue. Signed-off-by: Richard Weinberger <rich...@nod.at> --- fs/exec.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/fs/exec.c b/fs/exec.c index 97e0d52..7271b22 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1411,7 +1411,10 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs) printable(bprm->buf[2]) && printable(bprm->buf[3])) break; /* -ENOEXEC */ - request_module("binfmt-%04x", *(unsigned short *)(&bprm->buf[2])); + + /* Avoid an infinite loop */ + if (strcmp(modprobe_path, bprm->filename)) + request_module("binfmt-%04x", *(unsigned short *)(&bprm->buf[2])); #endif } } -- 1.7.5.4 ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel