On 1/10/24 16:32, Linus Torvalds wrote:
On Wed, 10 Jan 2024 at 14:23, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
with this patch in the tree, all sh4 builds fail with ICE.
during RTL pass: final
In file included from fs/namespace.c:11:
fs/namespace.c: In function '__se_sys_listmount':
include/linux/syscalls.h:258:9: internal compiler error: in change_address_1, at emit-rtl.c:2275
We do have those very ugly SYSCALL_DEFINEx() macros, but I'm not
seeing _anything_ that would be odd about the listmount case.
And the "__se_sys" thing in particular is just a fairly trivial wrapper.
It does use that asmlinkage_protect() thing, and it is unquestionably
horrendously ugly (staring too long at <linux/syscalls.h> has been
known to cause madness and despair), but we do that for *every* single
system call and I don't see why the new listmount entry would be
different.
I don't have much of a clue either, but here is a hint: The problem is
only seen if CONFIG_MMU=n. I tested with all configurations in
arch/sh/configs.
Guenter
