INFO: rcu_sched self-detected stall on CPU
	0-....: (124998 ticks this GP) idle=c5a/1/4611686018427387906 softirq=39550/39550 fqs=31211 
	 (t=125000 jiffies g=21437 c=21436 q=5759)
NMI backtrace for cpu 0
CPU: 0 PID: 12321 Comm: syz-executor4 Not tainted 4.16.0+ #377
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+0x1a7/0x27d lib/dump_stack.c:53
 nmi_cpu_backtrace+0x1e0/0x220 lib/nmi_backtrace.c:103
 nmi_trigger_cpumask_backtrace+0x123/0x180 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline]
 rcu_dump_cpu_stacks+0x186/0x1d3 kernel/rcu/tree.c:1376
 print_cpu_stall kernel/rcu/tree.c:1525 [inline]
 check_cpu_stall.isra.63+0xbb8/0x15b0 kernel/rcu/tree.c:1593
 __rcu_pending kernel/rcu/tree.c:3356 [inline]
 rcu_pending kernel/rcu/tree.c:3401 [inline]
 rcu_check_callbacks+0x21b/0xae0 kernel/rcu/tree.c:2763
 update_process_times+0x30/0x60 kernel/time/timer.c:1636
 tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:162
 tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1170
 __run_hrtimer kernel/time/hrtimer.c:1349 [inline]
 __hrtimer_run_queues+0x39c/0xec0 kernel/time/hrtimer.c:1411
 hrtimer_interrupt+0x2a5/0x6f0 kernel/time/hrtimer.c:1469
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
 smp_apic_timer_interrupt+0x14a/0x700 arch/x86/kernel/apic/apic.c:1050
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:862
 </IRQ>
RIP: 0010:__bitmap_set+0x13/0x110 lib/bitmap.c:257
RSP: 0018:ffff880191ec7678 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff12
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffffff830f79a5
RDX: 0000000000000000 RSI: 0000000000000007 RDI: ffff8801abb671a0
RBP: ffff880191ec76a0 R08: ffffed003576ce35 R09: ffff8801abb671a0
R10: 0000000000000001 R11: ffffed003576ce34 R12: 0000000000000007
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000007
 bitmap_set include/linux/bitmap.h:375 [inline]
 __bitmap_parselist+0x310/0x4b0 lib/bitmap.c:616
 bitmap_parselist+0x3a/0x50 lib/bitmap.c:628
 cpulist_parse include/linux/cpumask.h:639 [inline]
 update_cpumask kernel/cgroup/cpuset.c:974 [inline]
 cpuset_write_resmask+0x16b0/0x2850 kernel/cgroup/cpuset.c:1724
 cgroup_file_write+0x2ae/0x710 kernel/cgroup/cgroup.c:3429
 kernfs_fop_write+0x2bc/0x440 fs/kernfs/file.c:316
 __vfs_write+0xef/0x970 fs/read_write.c:485
 vfs_write+0x189/0x510 fs/read_write.c:549
 ksys_write+0xef/0x220 fs/read_write.c:598
 SYSC_write fs/read_write.c:610 [inline]
 SyS_write+0x24/0x30 fs/read_write.c:607
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4552d9
RSP: 002b:00007f44cc4a9c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f44cc4aa6d4 RCX: 00000000004552d9
RDX: 0000000000000003 RSI: 0000000020000040 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000006b6 R14: 00000000006fd1b0 R15: 0000000000000000
INFO: rcu_bh detected stalls on CPUs/tasks:
	0-....: (1 GPs behind) idle=c5a/1/4611686018427387904 softirq=39528/39550 fqs=31131 
	(detected by 1, t=125314 jiffies, g=-253, c=-254, q=1)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12321 Comm: syz-executor4 Not tainted 4.16.0+ #377
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__bitmap_set+0xeb/0x110 lib/bitmap.c:274
RSP: 0018:ffff880191ec76a8 EFLAGS: 00000286
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffffff830f6c4d
RDX: 0000000000040000 RSI: ffffc90002ec8000 RDI: ffff8801abb671a0
RBP: ffff880191ec7728 R08: ffffed003576ce35 R09: ffff8801abb671a0
R10: 0000000000000001 R11: ffffed003576ce34 R12: 0000000000000007
R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f44cc4aa700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072c000 CR3: 00000001ab68f004 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 bitmap_parselist+0x3a/0x50 lib/bitmap.c:628
 cpulist_parse include/linux/cpumask.h:639 [inline]
 update_cpumask kernel/cgroup/cpuset.c:974 [inline]
 cpuset_write_resmask+0x16b0/0x2850 kernel/cgroup/cpuset.c:1724
 cgroup_file_write+0x2ae/0x710 kernel/cgroup/cgroup.c:3429
 kernfs_fop_write+0x2bc/0x440 fs/kernfs/file.c:316
 __vfs_write+0xef/0x970 fs/read_write.c:485
 vfs_write+0x189/0x510 fs/read_write.c:549
 ksys_write+0xef/0x220 fs/read_write.c:598
 SYSC_write fs/read_write.c:610 [inline]
 SyS_write+0x24/0x30 fs/read_write.c:607
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4552d9
RSP: 002b:00007f44cc4a9c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f44cc4aa6d4 RCX: 00000000004552d9
RDX: 0000000000000003 RSI: 0000000020000040 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000006b6 R14: 00000000006fd1b0 R15: 0000000000000000
Code: d3 48 c1 e9 03 48 ba 00 00 00 00 00 fc ff df 80 3c 11 00 75 27 49 09 1e e8 33 08 62 fe 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d <c3> 44 8b 7d cc eb a8 4c 89 f7 e8 e6 ec 98 fe eb 82 4c 89 f7 e8