On Fri, Sep 18, 2020 at 02:40:12PM +0100, Al Viro wrote: > > /* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */ > > - return pt_regs_trap_type(current_pt_regs()) == 0x110; > > + return pt_regs_trap_type(current_pt_regs()) == 0x110 || > > + (current->flags & PF_FORCE_COMPAT); > > Can't say I like that approach ;-/ Reasoning about the behaviour is much > harder when it's controlled like that - witness set_fs() shite... I don't particularly like it either. But do you have a better idea how to deal with io_uring vs compat tasks?