rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=2c7/1/0x4000000000000000 softirq=98119/98120 fqs=4
(detected by 0, t=10502 jiffies, g=157173, q=22 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16795 Comm: kworker/u4:0 Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:232 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1193 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x83/0x140 kernel/rcu/tree.c:1177
Code: 3c 02 00 0f 85 a4 00 00 00 48 03 1c ed e0 78 7f 8b 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 20 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 87 00 00 00 48 8d 7b 18 48 8b 6b 20 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900003f8cd0 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffff8880b9b3ae80 RCX: ffffffff815d7e51
RDX: 1ffff110173675d4 RSI: 0000000000010004 RDI: ffff8880b9b3aea0
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8dbad2d7
R10: fffffbfff1b75a5a R11: 0000000000000001 R12: 0000000000000001
R13: 17bd1e2aaf7a3c55 R14: ffff888076678420 R15: 17bd1e2aaf7a3c55
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001380 CR3: 000000004ebe4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held_common kernel/rcu/update.c:102 [inline]
rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x560/0x780 kernel/locking/lockdep.c:5676
__raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:389 [inline]
advance_sched+0x435/0x9a0 net/sched/sch_taprio.c:764
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_is_held_type+0xff/0x140 kernel/locking/lockdep.c:5713
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 44 b5 8b 76 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc900002efa30 EFLAGS: 00000296
RAX: 0000000000000046 RBX: 0000000000000004 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffffff8bd83f60 R08: 0000000000000000 R09: ffffffff8dbad2d7
R10: fffffbfff1b75a5a R11: 0000000000000001 R12: ffff888044dfc200
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff888044dfccd8
lock_is_held include/linux/lockdep.h:279 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x560/0x780 kernel/locking/lockdep.c:5676
rcu_lock_release include/linux/rcupdate.h:274 [inline]
rcu_read_unlock include/linux/rcupdate.h:728 [inline]
inet_twsk_purge+0x55b/0x850 net/ipv4/inet_timewait_sock.c:300
ops_exit_list+0x125/0x170 net/core/net_namespace.c:167
cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
rcu: rcu_preempt kthread starved for 10494 jiffies! g157173 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:28824 pid: 17 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0xa00/0x4b30 kernel/sched/core.c:6428
schedule+0xd2/0x1f0 kernel/sched/core.c:6500
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1999
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2187
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 47 Comm: kworker/u4:3 Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:518
print_other_cpu_stall kernel/rcu/tree_stall.h:623 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:771 [inline]
rcu_pending kernel/rcu/tree.c:3977 [inline]
rcu_sched_clock_irq+0x2316/0x2370 kernel/rcu/tree.c:2675
update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1481
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:write_comp_data+0x15/0x90 kernel/kcov.c:223
Code: 8b 80 98 15 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 65 8b 05 69 d1 88 7e 49 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 <49> 89 f8 65 48 8b 14 25 80 6f 02 00 a9 00 01 ff 00 74 0e 85 f6 74
RSP: 0018:ffffc90000d8f948 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff8880b9b3f760 RCX: ffffffff816f07cd
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed1017367eed
R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000
csd_lock_wait kernel/smp.c:414 [inline]
smp_call_function_many_cond+0x4bd/0x1110 kernel/smp.c:988
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1231 [inline]
text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1419
text_poke_flush arch/x86/kernel/alternative.c:1589 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1586 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:808 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:800
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [kworker/u4:3:47]
Modules linked in:
irq event stamp: 33393498
hardirqs last enabled at (33393497): [] asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
hardirqs last disabled at (33393498): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106
softirqs last enabled at (33393492): [] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last enabled at (33393492): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
softirqs last disabled at (33393479): [] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (33393479): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
CPU: 0 PID: 47 Comm: kworker/u4:3 Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline]
RIP: 0010:smp_call_function_many_cond+0x492/0x1110 kernel/smp.c:988
Code: 8b 6b 08 31 ff 83 e5 01 89 ee e8 99 97 0a 00 85 ed 74 47 48 8b 04 24 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 fc 83 c5 03 39 9b 0a 00 f3 90 41 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 21
RSP: 0018:ffffc90000d8f950 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff8880b9b3f760 RCX: ffffffff816f07cd
RDX: ffff88801775a200 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffed1017367eed
R13: 0000000000000001 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002002c030 CR3: 000000000ba8e000 CR4: 00000000003506f0
Call Trace:
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1231 [inline]
text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1419
text_poke_flush arch/x86/kernel/alternative.c:1589 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1586 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:808 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:800
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16795 Comm: kworker/u4:0 Not tainted 5.19.0-rc2-syzkaller-00050-g018ab4fabddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0xc/0x12
Code: 56 57 41 50 41 51 41 52 41 53 e8 3f 19 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 c3 66 90 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <3c> 01 75 02 5a c3 56 0f b6 f0 e8 c5 ff ff ff 5e 5a c3 66 90 41 57
RSP: 0018:ffffc900003f8d10 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000002 RCX: ffffffff815dff10
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff911fb5b8
RBP: ffffffff911fb5b8 R08: 0000000000000000 R09: ffffffff911fb5bb
R10: fffffbfff223f6b7 R11: 0000000000000001 R12: ffffffff911fb5c0
R13: ffffffff911fb5c8 R14: 1ffff9200007f1ad R15: ffff88804c752340
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001380 CR3: 000000004ebe4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:596 [inline]
queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline]
do_raw_spin_unlock+0x171/0x230 kernel/locking/spinlock_debug.c:141
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock_irqrestore+0x1e/0x70 kernel/locking/spinlock.c:194
debug_object_deactivate lib/debugobjects.c:754 [inline]
debug_object_deactivate+0x264/0x300 lib/debugobjects.c:720
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x3f8/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_is_held_type+0xff/0x140 kernel/locking/lockdep.c:5713
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 44 b5 8b 76 83 f8 01 75 29 9c 58 f6 c4 02 75 3d 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 ed eb b9 0f 0b 48
RSP: 0018:ffffc900002efa30 EFLAGS: 00000296
RAX: 0000000000000046 RBX: 0000000000000004 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffffff8bd83f60 R08: 0000000000000000 R09: ffffffff8dbad2d7
R10: fffffbfff1b75a5a R11: 0000000000000001 R12: ffff888044dfc200
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff888044dfccd8
lock_is_held include/linux/lockdep.h:279 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x560/0x780 kernel/locking/lockdep.c:5676
rcu_lock_release include/linux/rcupdate.h:274 [inline]
rcu_read_unlock include/linux/rcupdate.h:728 [inline]
inet_twsk_purge+0x55b/0x850 net/ipv4/inet_timewait_sock.c:300
ops_exit_list+0x125/0x170 net/core/net_namespace.c:167
cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:594
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
----------------
Code disassembly (best guess):
0: 3c 02 cmp $0x2,%al
2: 00 0f add %cl,(%rdi)
4: 85 a4 00 00 00 48 03 test %esp,0x3480000(%rax,%rax,1)
b: 1c ed sbb $0xed,%al
d: e0 78 loopne 0x87
f: 7f 8b jg 0xffffff9c
11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
18: fc ff df
1b: 48 8d 7b 20 lea 0x20(%rbx),%rdi
1f: 48 89 fa mov %rdi,%rdx
22: 48 c1 ea 03 shr $0x3,%rdx
26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
* 2a: 0f 85 87 00 00 00 jne 0xb7 <-- trapping instruction
30: 48 8d 7b 18 lea 0x18(%rbx),%rdi
34: 48 8b 6b 20 mov 0x20(%rbx),%rbp
38: 48 rex.W
39: b8 00 00 00 00 mov $0x0,%eax
3e: 00 fc add %bh,%ah