Unable to handle kernel access to user memory without uaccess routines at virtual address 0000000004a7d0d0 Oops [#1] Modules linked in: CPU: 0 PID: 3978 Comm: syz-executor.1 Not tainted 5.12.0-rc5-syzkaller-00715-ga5e13c6df0e4 #0 Hardware name: riscv-virtio,qemu (DT) epc : schedule_tail+0x72/0xb2 kernel/sched/core.c:4262 ra : task_pid_vnr include/linux/sched.h:1421 [inline] ra : schedule_tail+0x70/0xb2 kernel/sched/core.c:4262 epc : ffffffe00008f4c4 ra : ffffffe00008f4c2 sp : ffffffe01e60bec0 gp : ffffffe004588b08 tp : ffffffe0087f17c0 t0 : 0000000000000000 t1 : 0000000000000001 t2 : 00000000000f4240 s0 : ffffffe01e60bee0 s1 : 0000000004a7d0d0 a0 : 0000000000000024 a1 : 0000000000000003 a2 : 1ffffffc0cfa8708 a3 : ffffffe0000d30bc a4 : 4cc05203e0203b00 a5 : 0000000000000000 a6 : 0000000000f00000 a7 : ffffffe0001041aa s2 : 0000000000040000 s3 : ffffffe00c2817c0 s4 : ffffffe0057bbfe0 s5 : 0000000000004000 s6 : ffffffe067d72ec0 s7 : ffffffe067d72910 s8 : ffffffe067d71ed8 s9 : ffffffe067d72ec0 s10: ffffffe00c281bf8 s11: 000000b82863fbb0 t3 : 4cc05203e0203b00 t4 : ffffffc4044837b2 t5 : ffffffc4044837ba t6 : 0000000000040000 status: 0000000000000120 badaddr: 0000000004a7d0d0 cause: 000000000000000f Call Trace: [] schedule_tail+0x72/0xb2 kernel/sched/core.c:4262 [] ret_from_exception+0x0/0x14 ---[ end trace d33a08ee6d0b5093 ]---