rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...!: (0 ticks this GP) idle=733/1/0x4000000000000000 softirq=142097/142097 fqs=1002 (detected by 1, t=10506 jiffies, g=205669, q=1720) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 17031 Comm: syz-executor.5 Not tainted 5.15.138-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:214 [inline] RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline] RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:344 [inline] RIP: 0010:cpu_online include/linux/cpumask.h:895 [inline] RIP: 0010:trace_hrtimer_cancel include/trace/events/timer.h:294 [inline] RIP: 0010:debug_deactivate+0x69/0x1e0 kernel/time/hrtimer.c:482 Code: bc 10 00 89 d8 c1 e8 06 48 8d 3c c5 28 93 e3 8d be 08 00 00 00 e8 c7 73 5a 00 89 d8 31 db 48 0f a3 05 83 2d 74 0c 40 0f 92 c5 <0f> 92 c3 bf 02 00 00 00 89 de e8 f8 be 10 00 31 ff 89 de e8 ef be RSP: 0018:ffffc90000007d40 EFLAGS: 00000047 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816f6599 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8de39328 RBP: ffffc90000007e01 R08: dffffc0000000000 R09: fffffbfff1bc7266 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9a2a200 R13: ffff8880b9a2a400 R14: ffff888076ddc340 R15: dffffc0000000000 FS: 00007fd7d107f6c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000440 CR3: 000000004af58000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0x31d/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [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 62 ce a4 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 a7 2a 32 f7 65 8b 05 38 66 dd 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90005ec7920 EFLAGS: 00000206 RAX: cd257c475ad77e00 RBX: 1ffff92000bd8f28 RCX: ffffffff8162ea18 RDX: dffffc0000000000 RSI: ffffffff8a8b0be0 RDI: 0000000000000001 RBP: ffffc90005ec79b0 R08: dffffc0000000000 R09: fffffbfff1f79c21 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff92000bd8f24 R14: ffffc90005ec7940 R15: 0000000000000246 clock_was_set+0x67d/0x880 kernel/time/hrtimer.c:970 timekeeping_inject_offset+0x65f/0x710 kernel/time/timekeeping.c:1378 do_adjtimex+0x511/0xaa0 kernel/time/timekeeping.c:2427 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:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fd7d2afdae9 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:00007fd7d107f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007fd7d2c1cf80 RCX: 00007fd7d2afdae9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fd7d2b4947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd7d2c1cf80 R15: 00007ffe9c8ff718 rcu: rcu_preempt kthread timer wakeup didn't happen for 5474 jiffies! g205669 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=133881 rcu: rcu_preempt kthread starved for 5475 jiffies! g205669 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:26776 pid: 15 ppid: 2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5026 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6372 schedule+0x11b/0x1f0 kernel/sched/core.c:6455 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884 rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1959 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2132 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 1 CPU: 1 PID: 27339 Comm: kworker/1:22 Not tainted 5.15.138-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Workqueue: events bpf_prog_free_deferred Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:481 print_other_cpu_stall+0x137a/0x14d0 kernel/rcu/tree_stall.h:586 check_cpu_stall kernel/rcu/tree_stall.h:729 [inline] rcu_pending kernel/rcu/tree.c:3911 [inline] rcu_sched_clock_irq+0x94f/0x1770 kernel/rcu/tree.c:2606 update_process_times+0x196/0x200 kernel/time/timer.c:1788 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:207 Code: 10 16 00 00 83 fa 02 75 21 48 8b 91 18 16 00 00 48 8b 32 48 8d 7e 01 8b 89 14 16 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48 8b 15 04 4d 82 7e 65 8b RSP: 0018:ffffc90004c5f898 EFLAGS: 00000293 RAX: ffffffff81745fa4 RBX: 1ffff110173483c1 RCX: ffff8880b0660000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90004c5f9e0 R08: ffffffff81745f74 R09: fffffbfff1f79c22 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff8880b9a41e08 R14: ffff8880b9b3a780 R15: 0000000000000001 csd_lock_wait kernel/smp.c:440 [inline] smp_call_function_many_cond+0xab4/0xd90 kernel/smp.c:969 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135 __purge_vmap_area_lazy+0x294/0x1740 mm/vmalloc.c:1683 _vm_unmap_aliases+0x453/0x4e0 mm/vmalloc.c:2107 vm_remove_mappings mm/vmalloc.c:2584 [inline] __vunmap+0x72e/0xa20 mm/vmalloc.c:2611 bpf_jit_binary_free kernel/bpf/core.c:910 [inline] bpf_jit_free+0x92/0x180 kernel/bpf/core.c:923 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298