rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-...!: (10500 ticks this GP) idle=ca0c/0/0x1 softirq=9009/9009 fqs=0 (t=10500 jiffies g=9177 q=1125 ncpus=2) rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g9177 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=5273 rcu: rcu_preempt kthread starved for 10500 jiffies! g9177 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26712 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+0x2d2/0x1150 kernel/rcu/tree.c:1706 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 rcu: Stack dump where RCU GP kthread last ran: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.98-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline] RIP: 0010:acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:572 Code: 27 f5 f6 48 83 e3 08 0f 85 0b 01 00 00 4c 8d 74 24 20 e8 e4 e5 fb f6 0f 1f 44 00 00 e8 3a 23 f5 f6 0f 00 2d 83 f4 b1 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 5b a7 4c f7 RSP: 0018:ffffc90000177b80 EFLAGS: 000002d3 RAX: ffffffff8a957316 RBX: 0000000000000000 RCX: ffff888012731dc0 RDX: 0000000000000000 RSI: ffffffff8aec0240 RDI: ffffffff8b3d47e0 RBP: ffffc90000177c10 R08: ffffffff8a9572f8 R09: ffffed10024e63b9 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200002ef70 R13: ffff888148ece804 R14: ffffc90000177ba0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056478b84d000 CR3: 000000007ea30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: acpi_idle_enter+0x352/0x4f0 drivers/acpi/processor_idle.c:709 cpuidle_enter_state+0x516/0xf80 drivers/cpuidle/cpuidle.c:239 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:356 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3ce/0x680 kernel/sched/idle.c:303 cpu_startup_entry+0x3d/0x60 kernel/sched/idle.c:401 start_secondary+0xe4/0xf0 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xcf/0xdb Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3923 Comm: syz-executor Not tainted 6.1.98-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data kernel/kcov.c:235 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x4/0x80 kernel/kcov.c:290 Code: 49 ff c2 4c 89 12 48 c7 44 11 08 06 00 00 00 48 89 7c 11 10 48 89 74 11 18 4c 89 44 11 20 c3 0f 1f 80 00 00 00 00 4c 8b 04 24 <65> 48 8b 15 84 d6 77 7e 65 8b 05 85 d6 77 7e a9 00 01 ff 00 74 10 RSP: 0018:ffffc90000007d20 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 000000000000001f RCX: ffff88802069d940 RDX: 0000000000010001 RSI: 0000000000000010 RDI: 0000000000000000 RBP: ffff8880b982a50c R08: ffffffff8179f076 R09: fffffbfff1ce702e R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8880b982a5c0 R14: ffff888020fcc340 R15: 1ffff110173054b8 FS: 0000555556da3500(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6d8bb04000 CR3: 000000007711c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: enqueue_hrtimer+0x116/0x410 kernel/time/hrtimer.c:1085 __run_hrtimer kernel/time/hrtimer.c:1703 [inline] __hrtimer_run_queues+0x728/0xe50 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:ma_dead_node lib/maple_tree.c:536 [inline] RIP: 0010:mas_next_nentry lib/maple_tree.c:4750 [inline] RIP: 0010:mas_next_entry+0x993/0xfb0 lib/maple_tree.c:4836 Code: e8 a2 36 09 f7 85 db 0f 84 c8 00 00 00 e8 35 33 09 f7 48 8b 5c 24 08 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 58 80 3c 01 00 <74> 08 4c 89 e7 e8 d3 b6 60 f7 49 8b 04 24 48 c7 c1 00 ff ff ff 48 RSP: 0018:ffffc90004d97798 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffc90004d978d8 RCX: 1ffff1100449ce40 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 1ffff920009b2f1f R08: ffffffff8a8162f3 R09: ffffffff8a815e22 R10: 0000000000000003 R11: ffff88802069d940 R12: ffff8880224e7200 R13: 0000000000000001 R14: ffff88807e908510 R15: ffffc90004d978c0 validate_mm+0x297/0x380 mm/mmap.c:334 __vma_adjust+0x1d41/0x1f40 mm/mmap.c:871 __split_vma+0x36e/0x530 mprotect_fixup+0x753/0x840 mm/mprotect.c:623 do_mprotect_pkey+0x8b6/0xbe0 mm/mprotect.c:792 __do_sys_mprotect mm/mprotect.c:819 [inline] __se_sys_mprotect mm/mprotect.c:816 [inline] __x64_sys_mprotect+0x7c/0x90 mm/mprotect.c:816 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f6d8b975c97 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc7a2ac5f8 EFLAGS: 00000246 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 00007f6d8bb03ff8 RCX: 00007f6d8b975c97 RDX: 0000000000000000 RSI: 0000000000001000 RDI: 00007f6d8affe000 RBP: 00007f6d8affe000 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000000022 R11: 0000000000000246 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.98-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline] RIP: 0010:acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:572 Code: 27 f5 f6 48 83 e3 08 0f 85 0b 01 00 00 4c 8d 74 24 20 e8 e4 e5 fb f6 0f 1f 44 00 00 e8 3a 23 f5 f6 0f 00 2d 83 f4 b1 00 fb f4 <4c> 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 5b a7 4c f7 RSP: 0018:ffffc90000177b80 EFLAGS: 000002d3 RAX: ffffffff8a957316 RBX: 0000000000000000 RCX: ffff888012731dc0 RDX: 0000000000000000 RSI: ffffffff8aec0240 RDI: ffffffff8b3d47e0 RBP: ffffc90000177c10 R08: ffffffff8a9572f8 R09: ffffed10024e63b9 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200002ef70 R13: ffff888148ece804 R14: ffffc90000177ba0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056478b84d000 CR3: 000000007ea30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: acpi_idle_enter+0x352/0x4f0 drivers/acpi/processor_idle.c:709 cpuidle_enter_state+0x516/0xf80 drivers/cpuidle/cpuidle.c:239 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:356 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3ce/0x680 kernel/sched/idle.c:303 cpu_startup_entry+0x3d/0x60 kernel/sched/idle.c:401 start_secondary+0xe4/0xf0 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xcf/0xdb