./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor167520981 <...> Warning: Permanently added '10.128.0.78' (ED25519) to the list of known hosts. execve("./syz-executor167520981", ["./syz-executor167520981"], 0x7ffeae5f3190 /* 10 vars */) = 0 brk(NULL) = 0x55555b2a1000 brk(0x55555b2a1d00) = 0x55555b2a1d00 arch_prctl(ARCH_SET_FS, 0x55555b2a1380) = 0 set_tid_address(0x55555b2a1650) = 5074 set_robust_list(0x55555b2a1660, 24) = 0 rseq(0x55555b2a1ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor167520981", 4096) = 27 getrandom("\x6c\x97\x92\x2b\xce\xc0\x4d\x93", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555b2a1d00 brk(0x55555b2c2d00) = 0x55555b2c2d00 brk(0x55555b2c3000) = 0x55555b2c3000 mprotect(0x7f5e13c4b000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555b2a1650) = 5075 ./strace-static-x86_64: Process 5075 attached [pid 5075] set_robust_list(0x55555b2a1660, 24) = 0 [pid 5075] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5075] setsid() = 1 [pid 5075] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5075] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5075] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5075] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5075] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5075] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5075] unshare(CLONE_NEWNS) = 0 [pid 5075] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5075] unshare(CLONE_NEWIPC) = 0 [pid 5075] unshare(CLONE_NEWCGROUP) = 0 [pid 5075] unshare(CLONE_NEWUTS) = 0 [pid 5075] unshare(CLONE_SYSVSEM) = 0 [pid 5075] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "16777216", 8) = 8 [pid 5075] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "536870912", 9) = 9 [pid 5075] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1024", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "8192", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1024", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1024", 4) = 4 [pid 5075] close(3) = 0 [pid 5075] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5075] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5075] close(3) = 0 [pid 5075] getpid() = 1 [pid 5075] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = 0 [ 191.177488][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 191.184506][ C0] rcu: 1-...!: (4 GPs behind) idle=cbdc/0/0x1 softirq=7010/7011 fqs=0 [ 191.193497][ C0] rcu: (detected by 0, t=10502 jiffies, g=9061, q=112 ncpus=2) [ 191.201165][ C0] Sending NMI from CPU 0 to CPUs 1: [ 191.206408][ C1] NMI backtrace for cpu 1 [ 191.206422][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc5-syzkaller #0 [ 191.206440][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 191.206451][ C1] RIP: 0010:__hrtimer_run_queues+0x25c/0xd50 [ 191.206499][ C1] Code: 84 1f 90 00 00 00 48 89 44 24 10 49 8d 84 1f 88 00 00 00 48 89 84 24 88 00 00 00 4c 8b 64 24 20 48 8b 44 24 48 42 80 3c 28 00 <74> 0d 48 8d bc 24 e0 00 00 00 e8 05 92 73 00 4c 8b bc 24 e0 00 00 [ 191.206513][ C1] RSP: 0018:ffffc90000a08d60 EFLAGS: 00000046 [ 191.206529][ C1] RAX: 1ffff920001411c8 RBX: ffff8880b952c9c8 RCX: ffff8880172b5a00 [ 191.206543][ C1] RDX: 0000000000010002 RSI: 1ffff110172a5932 RDI: ffff88802c72f340 [ 191.206556][ C1] RBP: ffffc90000a08ea8 R08: ffff88802c72f357 R09: 0000000000000000 [ 191.206568][ C1] R10: ffff88802c72f340 R11: ffffed10058e5e6b R12: 1ffff110172a593b [ 191.206581][ C1] R13: dffffc0000000000 R14: ffff88802c72f340 R15: ffff8880b952c880 [ 191.206595][ C1] FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 191.206609][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 191.206621][ C1] CR2: 00007f5e13c10950 CR3: 000000000e134000 CR4: 00000000003506f0 [ 191.206637][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 191.206647][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 191.206658][ C1] Call Trace: [ 191.206666][ C1] [ 191.206675][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 191.206699][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 191.206720][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 191.206738][ C1] ? nmi_handle+0x2a/0x5a0 [ 191.206765][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 191.206788][ C1] ? nmi_handle+0x14f/0x5a0 [ 191.206805][ C1] ? nmi_handle+0x2a/0x5a0 [ 191.206823][ C1] ? __hrtimer_run_queues+0x25c/0xd50 [ 191.206848][ C1] ? default_do_nmi+0x63/0x160 [ 191.206868][ C1] ? exc_nmi+0x123/0x1f0 [ 191.206886][ C1] ? end_repeat_nmi+0xf/0x53 [ 191.206913][ C1] ? __hrtimer_run_queues+0x25c/0xd50 [ 191.206938][ C1] ? __hrtimer_run_queues+0x25c/0xd50 [ 191.206963][ C1] ? __hrtimer_run_queues+0x25c/0xd50 [ 191.206987][ C1] [ 191.206993][ C1] [ 191.207010][ C1] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 191.207033][ C1] ? ktime_get_update_offsets_now+0x411/0x430 [ 191.207057][ C1] hrtimer_interrupt+0x396/0x990 [ 191.207107][ C1] __sysvec_apic_timer_interrupt+0x110/0x3f0 [ 191.207139][ C1] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 191.207163][ C1] [ 191.207169][ C1] [ 191.207176][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 191.207197][ C1] RIP: 0010:acpi_safe_halt+0x21/0x30 [ 191.207215][ C1] Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 d3 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d a5 47 b1 00 f3 0f 1e fa fb f4 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 [ 191.207229][ C1] RSP: 0018:ffffc90000197d08 EFLAGS: 00000246 [ 191.207244][ C1] RAX: ffff8880172b5a00 RBX: ffff888017afb064 RCX: 000000000001cbd9 [ 191.207257][ C1] RDX: 0000000000000001 RSI: ffff888017afb000 RDI: ffff888017afb064 [ 191.207270][ C1] RBP: 000000000003a438 R08: ffff8880b9537ccb R09: 1ffff110172a6f99 [ 191.207283][ C1] R10: dffffc0000000000 R11: ffffffff8b773050 R12: ffff88801bbd8000 [ 191.207296][ C1] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eaafe40 [ 191.207310][ C1] ? __pfx_acpi_idle_enter+0x10/0x10 [ 191.207340][ C1] acpi_idle_enter+0xe4/0x140 [ 191.207359][ C1] cpuidle_enter_state+0x112/0x480 [ 191.207387][ C1] ? __pfx_tick_nohz_idle_stop_tick+0x10/0x10 [ 191.207417][ C1] cpuidle_enter+0x5d/0xa0 [ 191.207452][ C1] do_idle+0x375/0x5d0 [ 191.207477][ C1] ? __pfx_do_idle+0x10/0x10 [ 191.207507][ C1] cpu_startup_entry+0x42/0x60 [ 191.207527][ C1] start_secondary+0x100/0x100 [ 191.207550][ C1] common_startup_64+0x13e/0x147 [ 191.207581][ C1] [ 191.207590][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.182 msecs [ 191.208404][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g9061 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 191.606984][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 191.617084][ C0] rcu: RCU grace-period kthread stack dump: [ 191.623023][ C0] task:rcu_preempt state:R running task stack:26256 pid:16 tgid:16 ppid:2 flags:0x00004000 [ 191.634835][ C0] Call Trace: [ 191.638144][ C0] [ 191.641130][ C0] __schedule+0x1796/0x4a00 [ 191.645824][ C0] ? __pfx___schedule+0x10/0x10 [ 191.650728][ C0] ? __pfx_lock_release+0x10/0x10 [ 191.655793][ C0] ? __asan_memset+0x23/0x50 [ 191.660463][ C0] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 191.666337][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 191.672721][ C0] ? schedule+0x90/0x320 [ 191.677015][ C0] schedule+0x14b/0x320 [ 191.681216][ C0] schedule_timeout+0x1be/0x310 [ 191.686133][ C0] ? __pfx_schedule_timeout+0x10/0x10 [ 191.691540][ C0] ? __pfx_process_timeout+0x10/0x10 [ 191.696867][ C0] ? prepare_to_swait_event+0x32e/0x350 [ 191.702461][ C0] rcu_gp_fqs_loop+0x2df/0x1370 [ 191.707361][ C0] ? __pfx_rcu_gp_init+0x10/0x10 [ 191.712331][ C0] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 191.718264][ C0] ? lockdep_hardirqs_on+0x99/0x150 [ 191.723508][ C0] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 191.728826][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 191.734774][ C0] ? finish_swait+0xd4/0x1e0 [ 191.740012][ C0] rcu_gp_kthread+0xa7/0x3b0 [ 191.744637][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 191.749865][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 191.755810][ C0] ? __kthread_parkme+0x169/0x1d0 [ 191.760889][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 191.766162][ C0] kthread+0x2f0/0x390 [ 191.770284][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 191.775516][ C0] ? __pfx_kthread+0x10/0x10 [ 191.780143][ C0] ret_from_fork+0x4b/0x80 [ 191.784602][ C0] ? __pfx_kthread+0x10/0x10 [ 191.789229][ C0] ret_from_fork_asm+0x1a/0x30 [ 191.794054][ C0] [ 191.797358][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 191.803699][ C0] CPU: 0 PID: 1038 Comm: kworker/u8:5 Not tainted 6.9.0-rc5-syzkaller #0 [ 191.812143][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 191.822225][ C0] Workqueue: events_unbound toggle_allocation_gate [ 191.828781][ C0] RIP: 0010:smp_call_function_many_cond+0x1894/0x2a00 [ 191.835681][ C0] Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 15 db 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 c0 d6 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 a4 d6 [ 191.855321][ C0] RSP: 0018:ffffc9000434f6e0 EFLAGS: 00000293 [ 191.861421][ C0] RAX: ffffffff818a29cc RBX: 1ffff110172a8861 RCX: ffff888021f30000 [ 191.869423][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 191.877434][ C0] RBP: ffffc9000434f8e0 R08: ffffffff818a299b R09: 1ffffffff25df6a0 [ 191.885436][ C0] R10: dffffc0000000000 R11: fffffbfff25df6a1 R12: dffffc0000000000 [ 191.893456][ C0] R13: ffff8880b9544308 R14: ffff8880b943f780 R15: 0000000000000001 [ 191.901548][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 191.910511][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 191.917126][ C0] CR2: 000055555b2a1650 CR3: 000000000e134000 CR4: 00000000003506f0 [ 191.925145][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 191.933145][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 191.941146][ C0] Call Trace: [ 191.944456][ C0] [ 191.947335][ C0] ? rcu_check_gp_kthread_starvation+0x278/0x310 [ 191.953787][ C0] ? print_other_cpu_stall+0x14a4/0x15e0 [ 191.959594][ C0] ? get_jiffies_update+0x44/0x150 [ 191.964870][ C0] ? __pfx_print_other_cpu_stall+0x10/0x10 [ 191.970730][ C0] ? seqcount_lockdep_reader_access+0x1c6/0x220 [ 191.977064][ C0] ? kvm_check_and_clear_guest_paused+0x6a/0xd0 [ 191.983355][ C0] ? rcu_sched_clock_irq+0x9f4/0x10a0 [ 191.988775][ C0] ? __pfx_rcu_sched_clock_irq+0x10/0x10 [ 191.994463][ C0] ? hrtimer_run_queues+0x16c/0x460 [ 191.999705][ C0] ? acct_account_cputime+0x207/0x210 [ 192.005135][ C0] ? update_process_times+0x1ce/0x230 [ 192.010547][ C0] ? tick_nohz_handler+0x37c/0x500 [ 192.015706][ C0] ? __pfx_tick_nohz_handler+0x10/0x10 [ 192.021222][ C0] ? __hrtimer_run_queues+0x55b/0xd50 [ 192.026672][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 192.032439][ C0] ? ktime_get_update_offsets_now+0x411/0x430 [ 192.038547][ C0] ? hrtimer_interrupt+0x396/0x990 [ 192.043723][ C0] ? __sysvec_apic_timer_interrupt+0x110/0x3f0 [ 192.049926][ C0] ? sysvec_apic_timer_interrupt+0xa1/0xc0 [ 192.055766][ C0] [ 192.058721][ C0] [ 192.061675][ C0] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 192.067871][ C0] ? smp_call_function_many_cond+0x187b/0x2a00 [ 192.074058][ C0] ? smp_call_function_many_cond+0x18ac/0x2a00 [ 192.080424][ C0] ? smp_call_function_many_cond+0x1894/0x2a00 [ 192.086718][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 192.091815][ C0] ? __pfx_text_poke_memcpy+0x10/0x10 [ 192.097289][ C0] ? __pfx___text_poke+0x10/0x10 [ 192.102274][ C0] ? process_scheduled_works+0x91b/0x17c0 [ 192.108042][ C0] ? __pfx_smp_call_function_many_cond+0x10/0x10 [ 192.114425][ C0] ? __pfx___might_resched+0x10/0x10 [ 192.119764][ C0] ? __mutex_trylock_common+0x183/0x2e0 [ 192.125359][ C0] ? __pfx___might_resched+0x10/0x10 [ 192.130686][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 192.135749][ C0] on_each_cpu_cond_mask+0x3f/0x80 [ 192.141016][ C0] text_poke_bp_batch+0x352/0xb30 [ 192.146096][ C0] ? __pfx_text_poke_bp_batch+0x10/0x10 [ 192.151682][ C0] ? __pfx___mutex_lock+0x10/0x10 [ 192.156741][ C0] ? arch_jump_label_transform_queue+0x9b/0x100 [ 192.163031][ C0] ? process_scheduled_works+0x91b/0x17c0 [ 192.168819][ C0] text_poke_finish+0x30/0x50 [ 192.173655][ C0] arch_jump_label_transform_apply+0x1c/0x30 [ 192.179696][ C0] static_key_enable_cpuslocked+0x136/0x260 [ 192.185632][ C0] static_key_enable+0x1a/0x20 [ 192.190513][ C0] toggle_allocation_gate+0xb5/0x250 [ 192.195927][ C0] ? __pfx_toggle_allocation_gate+0x10/0x10 [ 192.201992][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 192.208426][ C0] process_scheduled_works+0xa10/0x17c0 [ 192.214087][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 192.220282][ C0] ? assign_work+0x364/0x3d0 [ 192.224964][ C0] worker_thread+0x86d/0xd70 [ 192.229626][ C0] ? __kthread_parkme+0x169/0x1d0 [ 192.234741][ C0] ? __pfx_worker_thread+0x10/0x10 [ 192.240173][ C0] kthread+0x2f0/0x390 [ 192.244302][ C0] ? __pfx_worker_thread+0x10/0x10 [ 192.249479][ C0] ? __pfx_kthread+0x10/0x10 [ 192.254121][ C0] ret_from_fork+0x4b/0x80 [ 192.258589][ C0] ? __pfx_kthread+0x10/0x10 [ 192.263222][ C0] ret_from_fork_asm+0x1a/0x30 [ 192.268047][ C0]