rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...!: (1 GPs behind) idle=577c/1/0x4000000000000000 softirq=30748/30749 fqs=12 rcu: (detected by 1, t=10502 jiffies, g=45533, q=312 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: kauditd Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:get_bucket lib/debugobjects.c:492 [inline] RIP: 0010:debug_object_activate+0x13a/0x510 lib/debugobjects.c:706 Code: 5c 43 fd 48 8b 44 24 18 48 89 84 24 80 00 00 00 45 31 e4 80 3d 3a c0 f3 0a 00 0f 85 b7 02 00 00 e8 eb 03 00 00 4c 89 7c 24 10 <49> c1 ef 0c 48 b9 eb 83 b5 80 46 86 c8 61 49 0f af cf 48 c1 e9 2f RSP: 0018:ffffc90000007c00 EFLAGS: 00000046 RAX: d4a80a1149d16000 RBX: ffffc90000007c70 RCX: ffffc90000007903 RDX: 0000000000000003 RSI: ffffffff8bcac4e0 RDI: ffffffff8c1f8bc0 RBP: ffffc90000007d18 R08: ffffffff8fabdf2f R09: 1ffffffff1f57be5 R10: dffffc0000000000 R11: fffffbfff1f57be6 R12: 0000000000000000 R13: 1ffff92000000f88 R14: dffffc0000000000 R15: ffff8880518cd340 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3ba49ad988 CR3: 000000006146a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline] debug_activate kernel/time/hrtimer.c:478 [inline] enqueue_hrtimer+0x30/0x3c0 kernel/time/hrtimer.c:1090 __run_hrtimer kernel/time/hrtimer.c:1709 [inline] __hrtimer_run_queues+0x6d5/0xd50 kernel/time/hrtimer.c:1756 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3000 Code: ff ff e8 b6 b9 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 a8 b9 1f 00 e8 03 85 0f 0a 4d 85 f6 74 b6 e8 99 b9 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31 RSP: 0018:ffffc90000a577e0 EFLAGS: 00000293 RAX: 1ffff9200014af48 RBX: 0000000000000000 RCX: ffff888018af1e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a57990 R08: ffffffff8176a394 R09: 1ffffffff25ef6b4 R10: dffffc0000000000 R11: fffffbfff25ef6b5 R12: ffffffff8eb17fd8 R13: ffffffff8eb17f80 R14: 0000000000000200 R15: dffffc0000000000 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345 _printk+0xd5/0x120 kernel/printk/printk.c:2370 kauditd_printk_skb kernel/audit.c:546 [inline] kauditd_hold_skb+0x1bc/0x210 kernel/audit.c:581 kauditd_send_queue+0x2b1/0x310 kernel/audit.c:766 kauditd_thread+0x74a/0x9b0 kernel/audit.c:890 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 rcu: rcu_preempt kthread starved for 10478 jiffies! g45533 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:26320 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:2030 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2232 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 rcu: Stack dump where RCU GP kthread last ran: CPU: 1 PID: 10245 Comm: syz-executor.1 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline] RIP: 0010:smp_call_function_many_cond+0x1894/0x2a00 kernel/smp.c:855 Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 d5 f0 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 80 ec 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 64 ec RSP: 0000:ffffc90002f67440 EFLAGS: 00000293 RAX: ffffffff818a712c RBX: 1ffff11017288c89 RCX: ffff888029e91e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90002f67640 R08: ffffffff818a70fb R09: 1ffffffff25ef6ba R10: dffffc0000000000 R11: fffffbfff25ef6bb R12: dffffc0000000000 R13: ffff8880b9446448 R14: ffff8880b953f900 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32d27000 CR3: 000000000e132000 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 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:941 [inline] flush_tlb_mm_range+0x330/0x5c0 arch/x86/mm/tlb.c:1027 tlb_flush arch/x86/include/asm/tlb.h:20 [inline] tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:465 [inline] tlb_flush_mmu+0x1aa/0x680 mm/mmu_gather.c:372 tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465 exit_mmap+0x44f/0xc80 mm/mmap.c:3354 __mmput+0x115/0x3c0 kernel/fork.c:1346 exit_mm+0x220/0x310 kernel/exit.c:568 do_exit+0x99e/0x27e0 kernel/exit.c:864 do_group_exit+0x207/0x2c0 kernel/exit.c:1026 get_signal+0x16a1/0x1740 kernel/signal.c:2911 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efffc07dea9 Code: Unable to access opcode bytes at 0x7efffc07de7f. RSP: 002b:00007efffcdde178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007efffc1abf88 RCX: 00007efffc07dea9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007efffc1abf88 RBP: 00007efffc1abf80 R08: 00007efffcdde6c0 R09: 00007efffcdde6c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007efffc1abf8c R13: 000000000000004d R14: 00007ffca2ce62f0 R15: 00007ffca2ce63d8 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz-executor.1:10245] CPU#1 Utilization every 22s during lockup: #1: 97% system, 3% softirq, 1% hardirq, 0% idle #2: 97% system, 3% softirq, 1% hardirq, 0% idle #3: 97% system, 3% softirq, 1% hardirq, 0% idle #4: 97% system, 3% softirq, 1% hardirq, 0% idle #5: 97% system, 3% softirq, 1% hardirq, 0% idle Modules linked in: irq event stamp: 1596456 hardirqs last enabled at (1596455): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (1596456): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (1596454): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (1596454): [] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 softirqs last disabled at (1596429): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (1596429): [] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 CPU: 1 PID: 10245 Comm: syz-executor.1 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline] RIP: 0010:smp_call_function_many_cond+0x1894/0x2a00 kernel/smp.c:855 Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 d5 f0 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 80 ec 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 64 ec RSP: 0000:ffffc90002f67440 EFLAGS: 00000293 RAX: ffffffff818a712c RBX: 1ffff11017288c89 RCX: ffff888029e91e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90002f67640 R08: ffffffff818a70fb R09: 1ffffffff25ef6ba R10: dffffc0000000000 R11: fffffbfff25ef6bb R12: dffffc0000000000 R13: ffff8880b9446448 R14: ffff8880b953f900 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32d27000 CR3: 000000000e132000 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 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:941 [inline] flush_tlb_mm_range+0x330/0x5c0 arch/x86/mm/tlb.c:1027 tlb_flush arch/x86/include/asm/tlb.h:20 [inline] tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:465 [inline] tlb_flush_mmu+0x1aa/0x680 mm/mmu_gather.c:372 tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465 exit_mmap+0x44f/0xc80 mm/mmap.c:3354 __mmput+0x115/0x3c0 kernel/fork.c:1346 exit_mm+0x220/0x310 kernel/exit.c:568 do_exit+0x99e/0x27e0 kernel/exit.c:864 do_group_exit+0x207/0x2c0 kernel/exit.c:1026 get_signal+0x16a1/0x1740 kernel/signal.c:2911 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efffc07dea9 Code: Unable to access opcode bytes at 0x7efffc07de7f. RSP: 002b:00007efffcdde178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007efffc1abf88 RCX: 00007efffc07dea9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007efffc1abf88 RBP: 00007efffc1abf80 R08: 00007efffcdde6c0 R09: 00007efffcdde6c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007efffc1abf8c R13: 000000000000004d R14: 00007ffca2ce62f0 R15: 00007ffca2ce63d8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 29 Comm: kauditd Not tainted 6.9.0-rc4-next-20240418-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:144 [inline] RIP: 0010:cpumask_check include/linux/cpumask.h:151 [inline] RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:538 [inline] RIP: 0010:cpu_online include/linux/cpumask.h:1148 [inline] RIP: 0010:trace_hrtimer_expire_entry include/trace/events/timer.h:259 [inline] RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1689 [inline] RIP: 0010:__hrtimer_run_queues+0x4a7/0xd50 kernel/time/hrtimer.c:1756 Code: af 28 0d 0a 0f 1f 44 00 00 e8 b5 8d 12 00 65 8b 1d 2a 05 80 7e bf 07 00 00 00 89 de e8 e2 91 12 00 83 fb 07 0f 87 e6 02 00 00 94 8d 12 00 41 89 df 4c 89 f8 48 c1 e8 06 48 8d 3c c5 28 df ab RSP: 0018:ffffc90000007d60 EFLAGS: 00000097 RAX: 0000000000010001 RBX: 0000000000000000 RCX: ffff888018af1e00 RDX: ffff888018af1e00 RSI: 0000000000000000 RDI: 0000000000000007 RBP: ffffc90000007ea8 R08: ffffffff8183cfee R09: 1ffff11017285910 R10: dffffc0000000000 R11: ffffed1017285911 R12: 1ffff1101728593b R13: ffffffff898fdf80 R14: ffff8880518cd340 R15: ffff8880b942c880 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3ba49ad988 CR3: 000000006146a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:console_flush_all+0xaad/0xfd0 kernel/printk/printk.c:3000 Code: ff ff e8 b6 b9 1f 00 90 0f 0b 90 e9 d8 f8 ff ff e8 a8 b9 1f 00 e8 03 85 0f 0a 4d 85 f6 74 b6 e8 99 b9 1f 00 fb 48 8b 44 24 70 <42> 0f b6 04 38 84 c0 48 8b 7c 24 30 0f 85 22 02 00 00 0f b6 1f 31 RSP: 0018:ffffc90000a577e0 EFLAGS: 00000293 RAX: 1ffff9200014af48 RBX: 0000000000000000 RCX: ffff888018af1e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a57990 R08: ffffffff8176a394 R09: 1ffffffff25ef6b4 R10: dffffc0000000000 R11: fffffbfff25ef6b5 R12: ffffffff8eb17fd8 R13: ffffffff8eb17f80 R14: 0000000000000200 R15: dffffc0000000000 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345 _printk+0xd5/0x120 kernel/printk/printk.c:2370 kauditd_printk_skb kernel/audit.c:546 [inline] kauditd_hold_skb+0x1bc/0x210 kernel/audit.c:581 kauditd_send_queue+0x2b1/0x310 kernel/audit.c:766 kauditd_thread+0x74a/0x9b0 kernel/audit.c:890 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244