rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=dda4/1/0x4000000000000000 softirq=305217/305218 fqs=2
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5057/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=337281, q=256 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 25152 Comm: syz.0.7776 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__remove_hrtimer+0x123/0x3e0
Code: 74 2e e8 80 f4 12 00 4d 85 ed 0f 84 8a 00 00 00 e8 72 f4 12 00 eb 05 e8 6b f4 12 00 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d <c3> cc cc cc cc cc 4d 8d 67 08 4c 89 e0 48 c1 e8 03 0f b6 04 28 84
RSP: 0018:ffffc90000a08dd0 EFLAGS: 00000086
RAX: ffffffff81b25f8d RBX: 0000000000000001 RCX: ffff888102e8bb80
RDX: 0000000000010000 RSI: 0000000000000001 RDI: 0000000000000020
RBP: ffff8881ac7de300 R08: ffff8881ac7de327 R09: 0000000000000000
R10: ffff8881ac7de318 R11: ffffed10358fbc65 R12: ffff88823c628280
R13: dffffc0000000000 R14: ffff88823c628420 R15: 1ffff110478c507a
FS:  00007fcc851c66c0(0000) GS:ffff8882a92a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557edeba28 CR3: 000000011cd46000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __hrtimer_run_queues+0x295/0xa10
 hrtimer_interrupt+0x448/0x910
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:console_flush_all+0x7d2/0xaf0
Code: ff ff e8 e1 da 20 00 90 0f 0b 90 e9 9c fc ff ff e8 d3 da 20 00 e8 ee fd ff 09 48 85 db 74 c0 e8 c4 da 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 28 42 80 3c 20 00 4d 8d 77 58 74 08 4c 89 f7 e8 56 c6
RSP: 0018:ffffc90004836c60 EFLAGS: 00000246
RAX: ffffffff81a4780c RBX: ffffc90004836dc0 RCX: 0000000000080000
RDX: ffffc90025c71000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90004836d70 R08: ffffffff902fe4f7 R09: 1ffffffff205fc9e
R10: dffffc0000000000 R11: fffffbfff205fc9f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff8f21e5e0
 console_unlock+0xd1/0x1c0
 vprintk_emit+0x485/0x560
 _printk+0xdd/0x130
 __nilfs_msg+0x373/0x450
 nilfs_sufile_updatev+0x21c/0x6d0
 nilfs_segctor_do_construct+0x20dd/0x7bb0
 nilfs_segctor_construct+0x170/0x690
 nilfs_clean_segments+0x3ac/0xa50
 nilfs_ioctl+0x2619/0x2780
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc8439ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcc851c6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcc84615fa0 RCX: 00007fcc8439ce59
RDX: 0000200000000640 RSI: 0000000040786e88 RDI: 0000000000000004
RBP: 00007fcc84432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcc84616038 R14: 00007fcc84615fa0 R15: 00007fffe778fba8
 </TASK>
task:klogd           state:R  running task     stack:23752 pid:5057  tgid:5057  ppid:1      task_flags:0x400100 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x8e0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x30/0x90
Code: 04 24 65 48 8b 15 e8 68 72 11 65 8b 0d 09 69 72 11 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba ec 16 00 00 00 74 52 <8b> 8a c8 16 00 00 83 f9 03 75 47 48 8b 8a d0 16 00 00 44 8b 8a cc
RSP: 0018:ffffc9000298f9d8 EFLAGS: 00000246
RAX: ffffffff89838c88 RBX: ffff888113d63b80 RCX: 0000000000000000
RDX: ffff888113a4bb80 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000298faf0 R08: ffffffff89838c52 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e95cc00 R12: dffffc0000000000
R13: 1ffff92000531f48 R14: ffff88816b10e600 R15: 0000000000000001
 sk_filter_trim_cap+0x1c8/0xd00
 unix_dgram_sendmsg+0x758/0x17b0
 __sys_sendto+0x672/0x710
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc5f5bf69b5
RSP: 002b:00007ffee30fd648 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc5f5bf69b5
RDX: 0000000000000082 RSI: 00005560775e1a40 RDI: 0000000000000003
RBP: 00005560775d8910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007fc5f5d84212 R14: 00007ffee30fd748 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10498 jiffies! g337281 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27456 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_timeout+0x152/0x2c0
 rcu_gp_fqs_loop+0x30c/0x11f0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x389/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 10163 Comm: kworker/u9:3 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:smp_call_function_many_cond+0x10b0/0x14b0
Code: c0 75 73 41 8b 1e 89 de 83 e6 01 31 ff e8 f8 02 0c 00 83 e3 01 48 bb 00 00 00 00 00 fc ff df 75 07 e8 a4 fe 0b 00 eb 37 f3 90 <41> 0f b6 04 1c 84 c0 75 10 41 f7 06 01 00 00 00 74 1e e8 89 fe 0b
RSP: 0018:ffffc90005dc7720 EFLAGS: 00000293
RAX: ffffffff81b95447 RBX: dffffc0000000000 RCX: ffff88810b005940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90005dc7860 R08: ffffffff902fe4f7 R09: 1ffffffff205fc9e
R10: dffffc0000000000 R11: fffffbfff205fc9f R12: 1ffff110478c81e1
R13: ffff88812103c4c8 R14: ffff88823c640f08 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88818dca4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33021ff8 CR3: 000000000e74a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5fd/0x1110
 arch_jump_label_transform_apply+0x1c/0x30
 static_key_enable_cpuslocked+0x128/0x240
 static_key_enable+0x1a/0x20
 toggle_allocation_gate+0xab/0x290
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x389/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 240s! [kworker/u9:3:10163]
Modules linked in:
irq event stamp: 2804090
hardirqs last  enabled at (2804089): [<ffffffff8ba47f08>] irqentry_exit+0x218/0x8e0
hardirqs last disabled at (2804090): [<ffffffff8ba46c9e>] sysvec_apic_timer_interrupt+0xe/0xc0
softirqs last  enabled at (2804086): [<ffffffff8187a16a>] __irq_exit_rcu+0xca/0x220
softirqs last disabled at (2804065): [<ffffffff8187a16a>] __irq_exit_rcu+0xca/0x220
CPU: 0 UID: 0 PID: 10163 Comm: kworker/u9:3 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:smp_call_function_many_cond+0x10b0/0x14b0
Code: c0 75 73 41 8b 1e 89 de 83 e6 01 31 ff e8 f8 02 0c 00 83 e3 01 48 bb 00 00 00 00 00 fc ff df 75 07 e8 a4 fe 0b 00 eb 37 f3 90 <41> 0f b6 04 1c 84 c0 75 10 41 f7 06 01 00 00 00 74 1e e8 89 fe 0b
RSP: 0018:ffffc90005dc7720 EFLAGS: 00000293
RAX: ffffffff81b95447 RBX: dffffc0000000000 RCX: ffff88810b005940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90005dc7860 R08: ffffffff902fe4f7 R09: 1ffffffff205fc9e
R10: dffffc0000000000 R11: fffffbfff205fc9f R12: 1ffff110478c81e1
R13: ffff88812103c4c8 R14: ffff88823c640f08 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff88818dca4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33021ff8 CR3: 000000000e74a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5fd/0x1110
 arch_jump_label_transform_apply+0x1c/0x30
 static_key_enable_cpuslocked+0x128/0x240
 static_key_enable+0x1a/0x20
 toggle_allocation_gate+0xab/0x290
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x389/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 25152 Comm: syz.0.7776 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_is_held_type+0xb7/0x150
Code: 49 ff c7 49 63 85 88 0b 00 00 48 83 c3 28 49 39 c7 7c d8 eb 11 48 c7 c7 10 b4 82 8e 4c 89 fe e8 df 1a 4b f9 eb cb 31 db eb 1c <83> fd ff 74 12 31 c0 f6 43 22 03 0f 95 c0 31 db 39 c5 0f 94 c3 eb
RSP: 0018:ffffc90000a08cd8 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff888102e8c7d8 RCX: 0000000000010002
RDX: ffff888102e8bb80 RSI: ffff8881ac7de2c0 RDI: ffff888102e8c7d8
RBP: 00000000ffffffff R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000141190 R12: 0000000000000046
R13: ffff888102e8bb80 R14: ffff8881ac7de2c0 R15: 0000000000000005
FS:  00007fcc851c66c0(0000) GS:ffff8882a92a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557edeba28 CR3: 000000011cd46000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 advance_sched+0x163/0xc80
 __hrtimer_run_queues+0x3bc/0xa10
 hrtimer_interrupt+0x448/0x910
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:console_flush_all+0x7d2/0xaf0
Code: ff ff e8 e1 da 20 00 90 0f 0b 90 e9 9c fc ff ff e8 d3 da 20 00 e8 ee fd ff 09 48 85 db 74 c0 e8 c4 da 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 28 42 80 3c 20 00 4d 8d 77 58 74 08 4c 89 f7 e8 56 c6
RSP: 0018:ffffc90004836c60 EFLAGS: 00000246
RAX: ffffffff81a4780c RBX: ffffc90004836dc0 RCX: 0000000000080000
RDX: ffffc90025c71000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90004836d70 R08: ffffffff902fe4f7 R09: 1ffffffff205fc9e
R10: dffffc0000000000 R11: fffffbfff205fc9f R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff8f21e5e0
 console_unlock+0xd1/0x1c0
 vprintk_emit+0x485/0x560
 _printk+0xdd/0x130
 __nilfs_msg+0x373/0x450
 nilfs_sufile_updatev+0x21c/0x6d0
 nilfs_segctor_do_construct+0x20dd/0x7bb0
 nilfs_segctor_construct+0x170/0x690
 nilfs_clean_segments+0x3ac/0xa50
 nilfs_ioctl+0x2619/0x2780
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc8439ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcc851c6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcc84615fa0 RCX: 00007fcc8439ce59
RDX: 0000200000000640 RSI: 0000000040786e88 RDI: 0000000000000004
RBP: 00007fcc84432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcc84616038 R14: 00007fcc84615fa0 R15: 00007fffe778fba8
 </TASK>
