INFO: rcu_sched self-detected stall on CPU
	1-....: (119999 ticks this GP) idle=d3e/1/4611686018427387906 softirq=23368/23368 fqs=29969 
	 (t=120000 jiffies g=13283 c=13282 q=1878)
NMI backtrace for cpu 1
CPU: 1 PID: 6572 Comm: syz-executor1 Not tainted 4.16.0+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 nmi_cpu_backtrace lib/nmi_backtrace.c:103 [inline]
 nmi_trigger_cpumask_backtrace+0x262/0x4b0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x2c/0x40 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline]
 rcu_dump_cpu_stacks+0x307/0x4b0 kernel/rcu/tree.c:1375
 print_cpu_stall kernel/rcu/tree.c:1524 [inline]
 check_cpu_stall kernel/rcu/tree.c:1592 [inline]
 __rcu_pending kernel/rcu/tree.c:3361 [inline]
 rcu_pending kernel/rcu/tree.c:3423 [inline]
 rcu_check_callbacks+0x19ad/0x2cd0 kernel/rcu/tree.c:2763
 update_process_times+0x132/0x1a0 kernel/time/timer.c:1636
 tick_sched_handle kernel/time/tick-sched.c:162 [inline]
 tick_sched_timer+0x33b/0x4b0 kernel/time/tick-sched.c:1194
 __run_hrtimer kernel/time/hrtimer.c:1349 [inline]
 __hrtimer_run_queues+0xc03/0x15d0 kernel/time/hrtimer.c:1411
 hrtimer_interrupt+0x426/0xaf0 kernel/time/hrtimer.c:1469
 local_apic_timer_interrupt+0x66/0x230 arch/x86/kernel/apic/apic.c:1025
 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1053
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857
 </IRQ>
RIP: 0010:__bitmap_set lib/bitmap.c:261 [inline]
RIP: 0010:bitmap_set include/linux/bitmap.h:365 [inline]
RIP: 0010:__bitmap_parselist+0x90c/0xf60 lib/bitmap.c:616
RSP: 0018:ffff88014dcdf750 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff12
RAX: ffffffffffffffe0 RBX: 0000000000000000 RCX: 0000000000000005
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88014dcdf8b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 bitmap_parselist+0xe5/0x100 lib/bitmap.c:628
 __nodelist_parse include/linux/nodemask.h:342 [inline]
 update_nodemask kernel/cgroup/cpuset.c:1228 [inline]
 cpuset_write_resmask+0x6d0/0x2d70 kernel/cgroup/cpuset.c:1727
 cgroup_file_write+0x43c/0x8c0 kernel/cgroup/cgroup.c:3429
 kernfs_fop_write+0x60d/0x890 fs/kernfs/file.c:316
 __vfs_write+0x1a3/0x9f0 fs/read_write.c:480
 vfs_write+0x463/0x8d0 fs/read_write.c:544
 SYSC_write+0x172/0x360 fs/read_write.c:589
 SyS_write+0x55/0x80 fs/read_write.c:581
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455979
RSP: 002b:00007ff16274cc68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff16274d6d4 RCX: 0000000000455979
RDX: 0000000000000003 RSI: 00000000200000c0 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000719 R14: 00000000006feaf8 R15: 0000000000000000
INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 1-... } 120634 jiffies s: 2109 root: 0x2/.
blocking rcu_node structures:
Task dump for CPU 1:
syz-executor1   R  running task    58824  6572   4497 0x0000000c
Call Trace: