rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (0 ticks this GP) idle=37b/1/0x4000000000000000 softirq=63322/63322 fqs=0 (detected by 0, t=10506 jiffies, g=100201, q=307) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 18613 Comm: syz-executor.5 Not tainted 5.15.137-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] RIP: 0010:_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170 Code: e7 bf 61 f7 bf 01 00 00 00 e8 dd 4a 32 f7 49 8d 7c 24 18 31 f6 31 d2 31 c9 41 b8 01 00 00 00 45 31 c9 ff 75 08 e8 91 94 3d f7 <48> 83 c4 08 4c 89 e7 e8 a5 08 3f f7 48 c7 04 24 0e 36 e0 45 4b c7 RSP: 0018:ffffc90000dd0cb8 EFLAGS: 00000046 RAX: 33aafe3c70065100 RBX: 1ffff920001ba19c RCX: ffffffff816335e2 RDX: dffffc0000000000 RSI: ffffffff8a8b1e80 RDI: ffffffff8ad87b40 RBP: ffffc90000dd0d50 R08: dffffc0000000000 R09: fffffbfff1f79a22 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9b2a200 R13: 1ffff920001ba198 R14: ffffc90000dd0ce0 R15: dffffc0000000000 FS: 00007ffb68f526c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000440 CR3: 0000000022568000 CR4: 00000000003506e0 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x662/0xcf0 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 52 ee 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 4a 32 f7 65 8b 05 38 86 dd 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90005327920 EFLAGS: 00000206 RAX: 33aafe3c70065100 RBX: 1ffff92000a64f28 RCX: ffffffff8162ea18 RDX: dffffc0000000000 RSI: ffffffff8a8b0be0 RDI: 0000000000000001 RBP: ffffc900053279b0 R08: dffffc0000000000 R09: fffffbfff1f79a21 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff92000a64f24 R14: ffffc90005327940 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: 0033:0x7ffb6a9d0ae9 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:00007ffb68f520c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007ffb6aaeff80 RCX: 00007ffb6a9d0ae9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007ffb6aa1c47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffb6aaeff80 R15: 00007ffda70f0488 rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g100201 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=74882 rcu: rcu_preempt kthread starved for 10506 jiffies! g100201 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:26936 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: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 18613 Comm: syz-executor.5 Not tainted 5.15.137-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:193 Code: 1f 84 00 00 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 18 6f 63 0c 48 89 de 5b e9 57 de 48 00 cc cc cc cc cc cc cc <48> 8b 04 24 65 48 8b 0d 64 4d 82 7e 65 8b 15 65 4d 82 7e f7 c2 00 RSP: 0018:ffffc90000dd0d58 EFLAGS: 00000002 RAX: 0000000000010002 RBX: 0000000000000001 RCX: ffff888065400000 RDX: ffff888065400000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000dd0eb0 R08: ffffffff816f32dc R09: ffff888079440b40 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9b2a200 R13: ffff8880b9b2a400 R14: ffff888079440b40 R15: dffffc0000000000 FS: 00007ffb68f526c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000440 CR3: 0000000022568000 CR4: 00000000003506e0 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1651 [inline] __hrtimer_run_queues+0x309/0xcf0 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 52 ee 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 4a 32 f7 65 8b 05 38 86 dd 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90005327920 EFLAGS: 00000206 RAX: 33aafe3c70065100 RBX: 1ffff92000a64f28 RCX: ffffffff8162ea18 RDX: dffffc0000000000 RSI: ffffffff8a8b0be0 RDI: 0000000000000001 RBP: ffffc900053279b0 R08: dffffc0000000000 R09: fffffbfff1f79a21 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff92000a64f24 R14: ffffc90005327940 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: 0033:0x7ffb6a9d0ae9 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:00007ffb68f520c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007ffb6aaeff80 RCX: 00007ffb6a9d0ae9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007ffb6aa1c47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ffb6aaeff80 R15: 00007ffda70f0488