rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=971/1/0x4000000000000000 softirq=33431/33431 fqs=20
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P1075/1:b..l P89/1:b..l
(detected by 1, t=10502 jiffies, g=46997, q=382)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13526 Comm: syz-executor.1 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1701 [inline]
RIP: 0010:__hrtimer_run_queues+0x272/0xe50 kernel/time/hrtimer.c:1749
Code: e8 a3 9d 10 00 45 85 ff 74 44 e8 79 9b 10 00 48 8d 7b 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 <74> 06 0f 8e fa 0a 00 00 44 0f b6 63 38 31 ff 41 83 e4 01 44 89 e6
RSP: 0018:ffffc90000007e40 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88801b9bab40 RCX: 0000000000000000
RDX: 1ffff1100373756f RSI: ffffffff816706c7 RDI: ffff88801b9bab78
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000003
R10: ffffffff816706bd R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b9c2a500 R14: ffff8880b9c2a400 R15: 0000000000000001
FS: 00007f687f30a700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f68809f000d CR3: 000000007e720000 CR4: 0000000000350ef0
Call Trace:
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 da 60 14 f8 48 89 ef e8 22 d7 14 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 13 9f 07 f8 65 8b 05 ac 1d ba 76 85 c0 74 0a 5b 5d c3 e8 30 94
RSP: 0018:ffffc90004a5fcb0 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1feee76
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8880b9c2a400 R08: 0000000000000001 R09: ffffffff8ff76a07
R10: 0000000000000001 R11: 0000000000000000 R12: fb02b7f9c422e305
R13: 0000000000000000 R14: 0000007365637ac0 R15: dffffc0000000000
clock_was_set+0x56d/0x790 kernel/time/hrtimer.c:970
do_settimeofday64 kernel/time/timekeeping.c:1326 [inline]
do_settimeofday64+0x3b9/0x5b0 kernel/time/timekeeping.c:1293
do_sys_settimeofday64 kernel/time/time.c:195 [inline]
do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169
__do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline]
__se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline]
__x64_sys_clock_settime+0x1a1/0x280 kernel/time/posix-timers.c:1067
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f6880994e99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f687f30a168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f6880aa7f60 RCX: 00007f6880994e99
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 00007f68809eeff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe9356d71f R14: 00007f687f30a300 R15: 0000000000022000
task:kworker/u4:3 state:R running task stack:24392 pid: 89 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6668
irqentry_exit+0x31/0x80 kernel/entry/common.c:425
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5605
Code: be a5 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90001a9fa58 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000353f4d RCX: 18664d8cf7f119ce
RDX: 1ffff11002eac14b RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff76a07
R10: fffffbfff1feed40 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bb83e20 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
inet_twsk_purge+0x117/0x7d0 net/ipv4/inet_timewait_sock.c:268
ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
task:kworker/u4:5 state:R running task stack:25744 pid: 1075 ppid: 2 flags:0x00004000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6668
irqentry_exit+0x31/0x80 kernel/entry/common.c:425
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:arch_stack_walk+0x83/0xe0 arch/x86/kernel/stacktrace.c:24
Code: b4 07 00 8b 95 78 ff ff ff 85 d2 75 21 eb 33 4c 89 e7 ff d3 84 c0 74 2a 48 8d bd 78 ff ff ff e8 83 97 07 00 8b 85 78 ff ff ff <85> c0 74 14 48 8d bd 78 ff ff ff e8 6d 94 07 00 48 85 c0 48 89 c6
RSP: 0018:ffffc90004b1f788 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffffffff8165b0b0 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffc90004b1ff28 RDI: 0000000000000001
RBP: ffffc90004b1f810 R08: ffffffff8e0e0350 R09: 0000000000000001
R10: fffff52000963efc R11: 000000000008808a R12: ffffc90004b1f840
R13: 0000000000000000 R14: ffff88801c010000 R15: 0000000000000000
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:590 [inline]
batadv_forw_packet_alloc+0x3ac/0x4d0 net/batman-adv/send.c:519
batadv_iv_ogm_aggregate_new+0x134/0x4e0 net/batman-adv/bat_iv_ogm.c:563
batadv_iv_ogm_queue_add net/batman-adv/bat_iv_ogm.c:671 [inline]
batadv_iv_ogm_schedule_buff+0xe46/0x1430 net/batman-adv/bat_iv_ogm.c:850
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:869 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:862 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x740/0x8e0 net/batman-adv/bat_iv_ogm.c:1713
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: rcu_preempt kthread starved for 10450 jiffies! g46997 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:28688 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 13442 Comm: syz-executor.2 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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+0x1b3/0x230 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:481
print_other_cpu_stall kernel/rcu/tree_stall.h:586 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:729 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x2125/0x2200 kernel/rcu/tree.c:2597
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
__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:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x452/0xc20 kernel/smp.c:969
Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 40 78 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 33 06 00 00 8b 43 08 31
RSP: 0018:ffffc9000453f9d8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9c41d40 RCX: 0000000000000000
RDX: ffff8880285c1d00 RSI: ffffffff816c2a00 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816c2a26 R11: 0000000000000000 R12: ffffed10173883a9
R13: 0000000000000000 R14: ffff8880b9c41d48 R15: 0000000000000001
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1135
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1112 [inline]
text_poke_bp_batch+0x1b3/0x560 arch/x86/kernel/alternative.c:1297
text_poke_flush arch/x86/kernel/alternative.c:1451 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1448 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d5/0x430 kernel/jump_label.c:830
static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
tracepoint_remove_func kernel/tracepoint.c:417 [inline]
tracepoint_probe_unregister+0x632/0xc30 kernel/tracepoint.c:551
trace_event_reg+0x181/0x350 kernel/trace/trace_events.c:517
perf_trace_event_unreg.isra.0+0xac/0x2b0 kernel/trace/trace_event_perf.c:162
perf_trace_destroy+0xb5/0xf0 kernel/trace/trace_event_perf.c:243
_free_event+0x2ee/0x1390 kernel/events/core.c:4982
put_event kernel/events/core.c:5076 [inline]
perf_event_release_kernel+0x6f2/0x940 kernel/events/core.c:5191
perf_release+0x33/0x40 kernel/events/core.c:5201
__fput+0x286/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f662c1f3adb
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007fff07d64820 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f662c1f3adb
RDX: 0000001b2e220000 RSI: 00007f662c1b8000 RDI: 0000000000000003
RBP: 00007f662c355960 R08: 0000000000000000 R09: 000000008489ff20
R10: 00007fff07dd7090 R11: 0000000000000293 R12: 00000000000790ef
R13: 00007fff07d64920 R14: 00007fff07d64940 R15: 0000000000000032
----------------
Code disassembly (best guess):
0: e8 a3 9d 10 00 callq 0x109da8
5: 45 85 ff test %r15d,%r15d
8: 74 44 je 0x4e
a: e8 79 9b 10 00 callq 0x109b88
f: 48 8d 7b 38 lea 0x38(%rbx),%rdi
13: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1a: fc ff df
1d: 48 89 fa mov %rdi,%rdx
20: 48 c1 ea 03 shr $0x3,%rdx
24: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
28: 84 c0 test %al,%al
* 2a: 74 06 je 0x32 <-- trapping instruction
2c: 0f 8e fa 0a 00 00 jle 0xb2c
32: 44 0f b6 63 38 movzbl 0x38(%rbx),%r12d
37: 31 ff xor %edi,%edi
39: 41 83 e4 01 and $0x1,%r12d
3d: 44 89 e6 mov %r12d,%esi