rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=4bac/1/0x4000000000000000 softirq=15113/15114 fqs=40
rcu: hardirqs softirqs csw/system
rcu: number: 1 29 8
rcu: cputime: 0 44 0 ==> 105130(ms)
rcu: (detected by 0, t=10502 jiffies, g=15133, q=1011 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: kworker/1:1 Not tainted 6.5.0-rc5-syzkaller-00193-gcc941e548bff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_power_efficient gc_worker
RIP: 0010:mark_lock+0x16b/0x1950 kernel/locking/lockdep.c:4646
Code: 0d 14 00 00 4c 89 e0 48 23 42 60 0f 84 d5 07 00 00 ba 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 49 01 c6 49 c7 06 00 00 00 00 <49> c7 46 08 00 00 00 00 49 c7 46 14 00 00 00 00 48 8b 84 24 38 01
RSP: 0018:ffffc900001e0950 EFLAGS: 00000082
RAX: dffffc0000000000 RBX: ffff88801927a928 RCX: 1ffffffff2309e7a
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff9184f3d0
RBP: ffffc900001e0ab8 R08: 0000000000000000 R09: fffffbfff2309dd0
R10: ffffffff9184ee87 R11: 000000000000004e R12: 0000000000000100
R13: 0000000000000008 R14: fffff5200003c132 R15: ffff88801927a948
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020068000 CR3: 000000000c776000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4606 [inline]
__lock_acquire+0x975/0x5de0 kernel/locking/lockdep.c:5098
lock_acquire kernel/locking/lockdep.c:5761 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
debug_object_deactivate lib/debugobjects.c:783 [inline]
debug_object_deactivate+0x113/0x320 lib/debugobjects.c:771
debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline]
debug_deactivate kernel/time/hrtimer.c:483 [inline]
__run_hrtimer kernel/time/hrtimer.c:1656 [inline]
__hrtimer_run_queues+0x470/0xc10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline]
__sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1115
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:rcu_preempt_read_exit kernel/rcu/tree_plugin.h:386 [inline]
RIP: 0010:__rcu_read_unlock+0x7e/0x570 kernel/rcu/tree_plugin.h:423
Code: 04 00 00 8b 9d 3c 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 eb 01 83 c0 03 <38> d0 7c 08 84 d2 0f 85 e2 01 00 00 85 db 41 89 9c 24 3c 04 00 00
RSP: 0018:ffffc90000a1fbc0 EFLAGS: 00000202
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8869a93b RDI: ffff88801927a1fc
RBP: ffff888019279dc0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888019279dc0
R13: dffffc0000000000 R14: 0000000000007c8b R15: 0000000000040000
rcu_read_unlock include/linux/rcupdate.h:781 [inline]
gc_worker+0xa24/0x17f0 net/netfilter/nf_conntrack_core.c:1565
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600
worker_thread+0x687/0x1110 kernel/workqueue.c:2751
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: rcu_preempt kthread starved for 10420 jiffies! g15133 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:28320 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1808
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 6827 Comm: syz-executor.0 Not tainted 6.5.0-rc5-syzkaller-00193-gcc941e548bff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:csd_lock_wait kernel/smp.c:296 [inline]
RIP: 0010:smp_call_function_many_cond+0x4d6/0x1570 kernel/smp.c:835
Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 1c 5f 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 3c 0e 00 00 8b 43 08 31
RSP: 0018:ffffc9000592f9c0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9943020 RCX: 0000000000000000
RDX: ffff8880193d9dc0 RSI: ffffffff817aa984 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017328605
R13: 0000000000000001 R14: ffff8880b983d580 R15: ffff8880b9943028
FS: 0000555556ff3480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f516794a866 CR3: 0000000044b12000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1003
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2001 [inline]
text_poke_bp_batch+0x46b/0x780 arch/x86/kernel/alternative.c:2211
text_poke_flush arch/x86/kernel/alternative.c:2402 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2399 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2409
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32e/0x410 kernel/jump_label.c:829
static_key_disable_cpuslocked+0x154/0x1b0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
tracepoint_remove_func kernel/tracepoint.c:417 [inline]
tracepoint_probe_unregister+0x4a1/0xd20 kernel/tracepoint.c:551
bpf_raw_tp_link_release+0x55/0xa0 kernel/bpf/syscall.c:3275
bpf_link_free+0xe4/0x1b0 kernel/bpf/syscall.c:2840
bpf_link_put_direct kernel/bpf/syscall.c:2871 [inline]
bpf_link_release+0x63/0x80 kernel/bpf/syscall.c:2878
__fput+0x3f7/0xac0 fs/file_table.c:384
task_work_run+0x14d/0x240 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa7f6e7b9da
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007fff8affef30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007fa7f6e7b9da
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000032 R08: 0000001b2f920000 R09: 0000000000000007
R10: 000000008171ee8f R11: 0000000000000293 R12: 00007fa7f6a01660
R13: ffffffffffffffff R14: 00007fa7f6a00000 R15: 00000000000349cf