==================================================================
BUG: KASAN: vmalloc-out-of-bounds in idempotent kernel/module/main.c:3078 [inline]
BUG: KASAN: vmalloc-out-of-bounds in init_module_from_file+0x186/0x446 kernel/module/main.c:3124
Read of size 8 at addr ff20000000bb7d00 by task syz-executor.1/19193

CPU: 1 PID: 19193 Comm: syz-executor.1 Not tainted 6.4.0-syzkaller-g533925cb7604 #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8000a660>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:121
[<ffffffff834fe364>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:127
[<ffffffff8353e58a>] __dump_stack lib/dump_stack.c:88 [inline]
[<ffffffff8353e58a>] dump_stack_lvl+0xe0/0x14c lib/dump_stack.c:106
[<ffffffff835053c8>] print_address_description mm/kasan/report.c:364 [inline]
[<ffffffff835053c8>] print_report+0x1fc/0x4fe mm/kasan/report.c:475
[<ffffffff80540136>] kasan_report+0xbc/0x182 mm/kasan/report.c:588
[<ffffffff805413f6>] check_region_inline mm/kasan/generic.c:180 [inline]
[<ffffffff805413f6>] __asan_load8+0x80/0xa8 mm/kasan/generic.c:259
[<ffffffff8019f06a>] idempotent kernel/module/main.c:3078 [inline]
[<ffffffff8019f06a>] init_module_from_file+0x186/0x446 kernel/module/main.c:3124
[<ffffffff8019f3e4>] __do_sys_finit_module kernel/module/main.c:3171 [inline]
[<ffffffff8019f3e4>] sys_finit_module+0x8a/0xf4 kernel/module/main.c:3154
[<ffffffff800096ec>] syscall_handler+0xfa/0x148 arch/riscv/include/asm/syscall.h:90
[<ffffffff8353fb16>] do_trap_ecall_u+0xea/0xec arch/riscv/kernel/traps.c:302
[<ffffffff80005a10>] ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:102

Memory state around the buggy address:
 ff20000000bb7c00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ff20000000bb7c80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
>ff20000000bb7d00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                   ^
 ff20000000bb7d80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ff20000000bb7e00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
==================================================================