rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=20bc/1/0x4000000000000000 softirq=75249/75250 fqs=1
rcu: (detected by 0, t=10505 jiffies, g=124533, q=77 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25400 Comm: syz-executor.5 Not tainted 6.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:__lock_release kernel/locking/lockdep.c:5414 [inline]
RIP: 0010:lock_release+0x1ef/0x9d0 kernel/locking/lockdep.c:5773
Code: 04 38 84 c0 0f 85 62 05 00 00 83 3d 56 31 93 0d 00 0f 84 d5 03 00 00 4d 8d b5 b8 0a 00 00 4c 89 f0 48 c1 e8 03 48 89 44 24 48 <42> 0f b6 04 38 84 c0 0f 85 61 05 00 00 41 8b 06 85 c0 0f 84 4d 02
RSP: 0018:ffffc900001f0b60 EFLAGS: 00000802
RAX: 1ffff110064f9157 RBX: 0000000000000046 RCX: ffffc900001f0b03
RDX: 1ffff9200003e17c RSI: ffffffff8b6abc00 RDI: ffffffff8bbdf2c0
RBP: ffffc900001f0c90 R08: ffffffff8f00d22f R09: 1ffffffff1e01a45
R10: dffffc0000000000 R11: fffffbfff1e01a46 R12: 1ffff9200003e178
R13: ffff8880327c8000 R14: ffff8880327c8ab8 R15: dffffc0000000000
FS: 00007fd9cc0c36c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000440 CR3: 0000000082342000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline]
debug_deactivate+0x1b/0x1f0 kernel/time/hrtimer.c:483
__run_hrtimer kernel/time/hrtimer.c:1656 [inline]
__hrtimer_run_queues+0x321/0xd10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x104/0x390 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae ff c5 f6 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 73 f2 3b f6 65 8b 05 74 d4 de 74 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900095978a0 EFLAGS: 00000206
RAX: 4d06c09df8f15300 RBX: 1ffff920012b2f18 RCX: ffffffff925ce303
RDX: dffffc0000000000 RSI: ffffffff8b6aaf20 RDI: 0000000000000001
RBP: ffffc90009597938 R08: ffffffff8f00d22f R09: 1ffffffff1e01a45
R10: dffffc0000000000 R11: fffffbfff1e01a46 R12: dffffc0000000000
R13: 1ffff920012b2f14 R14: ffffc900095978c0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
timerfd_clock_was_set+0x1e0/0x2f0 fs/timerfd.c:113
clock_was_set+0x7ab/0x830 kernel/time/hrtimer.c:982
timekeeping_inject_offset+0x663/0x710 kernel/time/timekeeping.c:1395
do_adjtimex+0x515/0xab0 kernel/time/timekeeping.c:2444
do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
__do_sys_clock_adjtime kernel/time/posix-timers.c:1171 [inline]
__se_sys_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
__x64_sys_clock_adjtime+0x1e0/0x290 kernel/time/posix-timers.c:1162
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fd9cb27cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9cc0c30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007fd9cb39bf80 RCX: 00007fd9cb27cae9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007fd9cb2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd9cb39bf80 R15: 00007fff90f0ab18
rcu: rcu_preempt kthread starved for 10500 jiffies! g124533 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:26440 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1960/0x4a80 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x30a/0x14f0 kernel/rcu/tree.c:1631
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1830
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 2855 Comm: kworker/u4:12 Not tainted 6.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x182c/0x2900 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 9d 87 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 d8 83 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 bc 83
RSP: 0018:ffffc90009d77720 EFLAGS: 00000293
RAX: ffffffff81833e94 RBX: 1ffff110173282d5 RCX: ffff888026d1bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90009d77920 R08: ffffffff81833e63 R09: 1ffffffff21bac6c
R10: dffffc0000000000 R11: fffffbfff21bac6d R12: dffffc0000000000
R13: ffff8880b99416a8 R14: ffff8880b983d480 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c9ea58f70 CR3: 000000000d730000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2006 [inline]
text_poke_bp_batch+0x350/0xb20 arch/x86/kernel/alternative.c:2216
text_poke_flush arch/x86/kernel/alternative.c:2407 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2414
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x132/0x250 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:830
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242