syzbot

WARNING: [] kernel/sched/completion.c:76 at complete_all+0x1d2/0x24c kernel/sched/completion.c:76, CPU#0: syz.1.221/4354
Modules linked in:
CPU: 0 UID: 0 PID: 4354 Comm: syz.1.221 Not tainted syzkaller #0 PREEMPT 
Hardware name: riscv-virtio,qemu (DT)
epc : complete_all+0x1d2/0x24c kernel/sched/completion.c:76
 ra : complete_all+0x1d2/0x24c kernel/sched/completion.c:76
epc : ffffffff802bd882 ra : ffffffff802bd882 sp : ffff8f8003e07250
 gp : ffffffff89f9df20 tp : ffffaf8013b53500 t0 : ffff8f8003e06e14
 t1 : fffff5ef0dd978f2 t2 : 6874206e6920746f s0 : ffff8f8003e07290
 s1 : ffffaf8011ffc858 a0 : 0000000000000001 a1 : 0000000000000000
 a2 : 0000000000080000 a3 : ffffffff80146d20 a4 : 0000000000000000
 a5 : 0000000000000000 a6 : 0000000000000003 a7 : ffffaf806ecbc793
 s2 : ffffaf806ecdf460 s3 : ffffaf8013b54500 s4 : ffffffff9136c6e8
 s5 : 1ffff5f0023ff8ff s6 : 0000000000000001 s7 : ffffaf8011ffc694
 s8 : ffffaf8011ffc008 s9 : ffff8f8003e07420 s10: 1ffff1f0007c0e78
 s11: ffffaf8011ffc130 t3 : ffffffff87d9cae8 t4 : fffff5ef0dd978f2
 t5 : fffff5ef0dd978f3 t6 : ffff8f8003e06bd8 ssp : 0000000000000000
status: 0000000200000120 badaddr: ffffffff802bd882 cause: 0000000000000003
[<ffffffff802bd882>] complete_all+0x1d2/0x24c kernel/sched/completion.c:76
[<ffffffff82c2c358>] device_pm_sleep_init+0x8c/0x124 drivers/base/power/main.c:117
[<ffffffff82bd4a62>] device_pm_init drivers/base/power/power.h:168 [inline]
[<ffffffff82bd4a62>] device_initialize+0x1e2/0x4c8 drivers/base/core.c:3165
[<ffffffff8527abb0>] netdev_register_kobject+0x28/0x32c net/core/net-sysfs.c:2339
[<ffffffff85189b5c>] register_netdevice+0x1140/0x219c net/core/dev.c:11406
[<ffffffff85a0335e>] ipmr_reg_vif net/ipv4/ipmr.c:577 [inline]
[<ffffffff85a0335e>] vif_add+0xc16/0x1430 net/ipv4/ipmr.c:851
[<ffffffff85a15d68>] ip_mroute_setsockopt+0xdec/0x10e0 net/ipv4/ipmr.c:1456
[<ffffffff857ec6a0>] do_ip_setsockopt+0x248/0x306c net/ipv4/ip_sockglue.c:948
[<ffffffff857ef516>] ip_setsockopt+0x52/0xe4 net/ipv4/ip_sockglue.c:1417
[<ffffffff858f5366>] raw_setsockopt+0xbe/0x25c net/ipv4/raw.c:847
[<ffffffff850b156c>] sock_common_setsockopt+0x90/0xc0 net/core/sock.c:3973
[<ffffffff850a1612>] do_sock_setsockopt+0x20a/0x40c net/socket.c:2322
[<ffffffff850aeb6e>] __sys_setsockopt+0x13e/0x1e4 net/socket.c:2347
[<ffffffff850aecba>] __do_sys_setsockopt net/socket.c:2353 [inline]
[<ffffffff850aecba>] __se_sys_setsockopt net/socket.c:2350 [inline]
[<ffffffff850aecba>] __riscv_sys_setsockopt+0xa6/0x114 net/socket.c:2350
[<ffffffff80078192>] syscall_handler+0x92/0x114 arch/riscv/include/asm/syscall.h:112
[<ffffffff86391c0a>] do_trap_ecall_u+0x3d2/0x58c arch/riscv/kernel/traps.c:344
[<ffffffff863bb61e>] handle_exception+0x15e/0x16a arch/riscv/kernel/entry.S:232