rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (10500 ticks this GP) idle=430c/1/0x4000000000000000 softirq=34530/34530 fqs=0 (t=10502 jiffies g=48641 q=47 ncpus=2) rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g48641 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=20242 rcu: rcu_preempt kthread starved for 10502 jiffies! g48641 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:25528 pid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965 rcu_gp_fqs_loop+0x2d2/0x1120 kernel/rcu/tree.c:1706 rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1905 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8222 Comm: syz-executor.1 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:__netif_schedule+0x1/0x310 net/core/dev.c:3110 Code: 73 8e 80 e1 07 80 c1 03 38 c1 0f 8c b8 fd ff ff 48 c7 c7 38 6c 73 8e e8 4d 06 62 f9 e9 a7 fd ff ff e8 a3 20 0a 02 0f 1f 00 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 RSP: 0018:ffffc90000007cb0 EFLAGS: 00000046 RAX: ffffffff88b45b72 RBX: ffffffff88b45b30 RCX: ffff8880651b1dc0 RDX: 0000000000010001 RSI: ffffffff8b3d2d00 RDI: ffff88805c1cc000 RBP: 0000000000000001 R08: ffffffff88b45b60 R09: fffffbfff2093045 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805c1cc000 R13: ffff88805c1cc360 R14: dffffc0000000000 R15: 17ca8f1808000000 FS: 00007fbe33fea6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd257484f00 CR3: 000000005b03b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: advance_sched+0x772/0x970 net/sched/sch_taprio.c:754 __run_hrtimer kernel/time/hrtimer.c:1686 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 12 a3 4d f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 17 e9 c9 f6 65 8b 05 b8 14 6e 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90011dc7920 EFLAGS: 00000206 RAX: 2f152523ac1b2200 RBX: 1ffff920023b8f28 RCX: ffffffff816ac11a RDX: dffffc0000000000 RSI: ffffffff8aebeec0 RDI: 0000000000000001 RBP: ffffc90011dc79b0 R08: dffffc0000000000 R09: fffffbfff2093045 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920023b8f24 R14: ffffc90011dc7940 R15: 0000000000000246 clock_was_set+0x179/0x900 kernel/time/hrtimer.c:970 timekeeping_inject_offset+0x65f/0x710 kernel/time/timekeeping.c:1395 do_adjtimex+0x511/0xaa0 kernel/time/timekeeping.c:2444 do_clock_adjtime kernel/time/posix-timers.c:1149 [inline] __do_sys_clock_adjtime kernel/time/posix-timers.c:1161 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1152 [inline] __x64_sys_clock_adjtime+0x1dc/0x290 kernel/time/posix-timers.c:1152 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbe3327de69 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:00007fbe33fea0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007fbe333ac050 RCX: 00007fbe3327de69 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fbe332ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fbe333ac050 R15: 00007fff2adcde88 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8222 Comm: syz-executor.1 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:kasan_check_range+0x1/0x290 mm/kasan/generic.c:188 Code: 01 c6 48 89 c7 e8 9f d8 a8 08 31 c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 <41> 57 41 56 53 b0 01 48 85 f6 0f 84 9a 01 00 00 48 89 fd 48 01 f5 RSP: 0018:ffffc90000007a28 EFLAGS: 00000046 RAX: 0000000000000001 RBX: 000000000000005e RCX: ffffffff816ac11a RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90498228 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff2093046 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880651b2898 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880651b28c8 FS: 00007fbe33fea6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd257484f00 CR3: 000000005b03b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] hlock_class kernel/locking/lockdep.c:228 [inline] mark_lock+0x9a/0x340 kernel/locking/lockdep.c:4606 mark_usage kernel/locking/lockdep.c:4520 [inline] __lock_acquire+0xb40/0x1f80 kernel/locking/lockdep.c:5003 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x6d3/0xe50 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 12 a3 4d f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 17 e9 c9 f6 65 8b 05 b8 14 6e 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90011dc7920 EFLAGS: 00000206 RAX: 2f152523ac1b2200 RBX: 1ffff920023b8f28 RCX: ffffffff816ac11a RDX: dffffc0000000000 RSI: ffffffff8aebeec0 RDI: 0000000000000001 RBP: ffffc90011dc79b0 R08: dffffc0000000000 R09: fffffbfff2093045 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920023b8f24 R14: ffffc90011dc7940 R15: 0000000000000246 clock_was_set+0x179/0x900 kernel/time/hrtimer.c:970 timekeeping_inject_offset+0x65f/0x710 kernel/time/timekeeping.c:1395 do_adjtimex+0x511/0xaa0 kernel/time/timekeeping.c:2444 do_clock_adjtime kernel/time/posix-timers.c:1149 [inline] __do_sys_clock_adjtime kernel/time/posix-timers.c:1161 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1152 [inline] __x64_sys_clock_adjtime+0x1dc/0x290 kernel/time/posix-timers.c:1152 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbe3327de69 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:00007fbe33fea0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007fbe333ac050 RCX: 00007fbe3327de69 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fbe332ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fbe333ac050 R15: 00007fff2adcde88 CPU: 1 PID: 46 Comm: kworker/u4:3 Not tainted 6.1.84-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:424 [inline] RIP: 0010:smp_call_function_many_cond+0x1fb5/0x3460 kernel/smp.c:998 Code: e6 01 31 ff e8 ec 42 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 0a e8 77 3f 0b 00 e9 1b ff ff ff f3 90 42 0f b6 04 2b <84> c0 75 14 41 f7 07 01 00 00 00 0f 84 fe fe ff ff e8 55 3f 0b 00 RSP: 0018:ffffc90000b775a0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 1ffff1101730859d RCX: ffff8880192f3b80 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000b77980 R08: ffffffff817f4764 R09: fffffbfff2093045 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000800000000 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b9842ce8 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbe33fead58 CR3: 000000000ce8e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1166 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1334 [inline] text_poke_bp_batch+0x5f9/0x940 arch/x86/kernel/alternative.c:1596 text_poke_flush arch/x86/kernel/alternative.c:1725 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1732 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xca/0x1b0 kernel/jump_label.c:207 static_key_disable+0x16/0x20 kernel/jump_label.c:215 toggle_allocation_gate+0x3e0/0x480 mm/kfence/core.c:818 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307