./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1036164216 <...> Warning: Permanently added '10.128.0.165' (ED25519) to the list of known hosts. execve("./syz-executor1036164216", ["./syz-executor1036164216"], 0x7ffde5ad8490 /* 10 vars */) = 0 brk(NULL) = 0x555561f5f000 brk(0x555561f5fd00) = 0x555561f5fd00 arch_prctl(ARCH_SET_FS, 0x555561f5f380) = 0 set_tid_address(0x555561f5f650) = 5834 set_robust_list(0x555561f5f660, 24) = 0 rseq(0x555561f5fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1036164216", 4096) = 28 getrandom("\x34\xd3\xae\x58\xc4\xbc\x88\xd6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555561f5fd00 brk(0x555561f80d00) = 0x555561f80d00 brk(0x555561f81000) = 0x555561f81000 mprotect(0x7f87149ba000, 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./strace-static-x86_64: Process 5835 attached [pid 5835] set_robust_list(0x555561f5f660, 24 [pid 5834] <... clone resumed>, child_tidptr=0x555561f5f650) = 5835 [pid 5835] <... set_robust_list resumed>) = 0 [pid 5835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5835] getppid() = 0 [pid 5835] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5835] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5835] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5835] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5835] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5835] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5835] unshare(CLONE_NEWNS) = 0 [pid 5835] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5835] unshare(CLONE_NEWIPC) = 0 [pid 5835] unshare(CLONE_NEWCGROUP) = 0 [pid 5835] unshare(CLONE_NEWUTS) = 0 [pid 5835] unshare(CLONE_SYSVSEM) = 0 [pid 5835] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "16777216", 8) = 8 [pid 5835] close(3) = 0 [pid 5835] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "536870912", 9) = 9 [pid 5835] close(3) = 0 [pid 5835] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "1024", 4) = 4 [pid 5835] close(3) = 0 [pid 5835] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "8192", 4) = 4 [pid 5835] close(3) = 0 [pid 5835] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "1024", 4) = 4 [pid 5835] close(3) = 0 [pid 5835] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "1024", 4) = 4 [pid 5835] close(3) = 0 [pid 5835] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5835] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5835] close(3) = 0 [pid 5835] getpid() = 1 [pid 5835] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< f8 01 0f 85 a3 01 00 00 49 89 de 48 c1 eb 03 42 80 3c 2b 00 74 [ 211.435115][ C0] RSP: 0018:ffffc900000079e0 EFLAGS: 00000057 [ 211.435134][ C0] RAX: 0000000000000001 RBX: ffffc90000007a40 RCX: ffffffff8e697098 [ 211.435146][ C0] RDX: dffffc0000000000 RSI: ffffffff8c0aa8a0 RDI: ffffffff8c5f8da0 [ 211.435158][ C0] RBP: ffffc90000007b28 R08: ffffffff942c4887 R09: 1ffffffff2858910 [ 211.435170][ C0] R10: dffffc0000000000 R11: fffffbfff2858911 R12: 1ffff92000000f44 [ 211.435181][ C0] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000046 [ 211.435192][ C0] FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 211.435204][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 211.435215][ C0] CR2: 0000000020000600 CR3: 0000000011cea000 CR4: 00000000003526f0 [ 211.435229][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 211.435238][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 211.435248][ C0] Call Trace: [ 211.435256][ C0] [ 211.435263][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 211.435289][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 211.435308][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 211.435328][ C0] ? nmi_handle+0x2a/0x5a0 [ 211.435352][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 211.435368][ C0] ? nmi_handle+0x14f/0x5a0 [ 211.435385][ C0] ? nmi_handle+0x2a/0x5a0 [ 211.435404][ C0] ? lock_acquire+0x20a/0x550 [ 211.435420][ C0] ? default_do_nmi+0x63/0x160 [ 211.435440][ C0] ? exc_nmi+0x123/0x1f0 [ 211.435458][ C0] ? end_repeat_nmi+0xf/0x53 [ 211.435479][ C0] ? lock_acquire+0x20a/0x550 [ 211.435496][ C0] ? lock_acquire+0x20a/0x550 [ 211.435514][ C0] ? lock_acquire+0x20a/0x550 [ 211.435531][ C0] [ 211.435536][ C0] [ 211.435544][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 211.435561][ C0] ? __lock_acquire+0x1397/0x2100 [ 211.435586][ C0] _raw_spin_lock_irqsave+0xd5/0x120 [ 211.435607][ C0] ? debug_object_activate+0x17f/0x580 [ 211.435635][ C0] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 211.435661][ C0] debug_object_activate+0x17f/0x580 [ 211.435680][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 211.435695][ C0] ? __pfx_debug_object_activate+0x10/0x10 [ 211.435713][ C0] ? advance_sched+0xa02/0xca0 [ 211.435736][ C0] ? _raw_spin_lock_irq+0xdf/0x120 [ 211.435756][ C0] ? __pfx__raw_spin_lock_irq+0x10/0x10 [ 211.435779][ C0] enqueue_hrtimer+0x30/0x3c0 [ 211.435803][ C0] __hrtimer_run_queues+0x6cb/0xd30 [ 211.435832][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 211.435854][ C0] ? read_tsc+0x9/0x20 [ 211.435867][ C0] ? ktime_get_update_offsets_now+0x393/0x3b0 [ 211.435889][ C0] hrtimer_interrupt+0x403/0xa40 [ 211.435919][ C0] __sysvec_apic_timer_interrupt+0x110/0x420 [ 211.435939][ C0] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 211.435963][ C0] [ 211.435968][ C0] [ 211.435973][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 211.435991][ C0] RIP: 0010:acpi_safe_halt+0x21/0x30 [ 211.436009][ C0] Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d6 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 35 4f 95 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 [ 211.436021][ C0] RSP: 0018:ffffffff8e607ca8 EFLAGS: 00000246 [ 211.436033][ C0] RAX: ffffffff8e6965c0 RBX: ffff8881416d4864 RCX: 000000000002d5c9 [ 211.436045][ C0] RDX: 0000000000000001 RSI: ffff8881416d4800 RDI: ffff8881416d4864 [ 211.436055][ C0] RBP: 000000000003a9f8 R08: ffff8880b8637cdb R09: 1ffff110170c6f9b [ 211.436067][ C0] R10: dffffc0000000000 R11: ffffffff8bd41140 R12: ffff8881476ed000 [ 211.436078][ C0] R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f1240c0 [ 211.436090][ C0] ? __pfx_acpi_idle_enter+0x10/0x10 [ 211.436113][ C0] acpi_idle_enter+0xe4/0x140 [ 211.436131][ C0] cpuidle_enter_state+0x109/0x470 [ 211.436148][ C0] ? __pfx_menu_select+0x10/0x10 [ 211.436166][ C0] cpuidle_enter+0x5d/0xa0 [ 211.436189][ C0] do_idle+0x372/0x5c0 [ 211.436202][ C0] ? __pfx___schedule+0x10/0x10 [ 211.436227][ C0] ? __pfx_do_idle+0x10/0x10 [ 211.436242][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 211.436263][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 211.436286][ C0] ? rest_init+0x31/0x300 [ 211.436303][ C0] ? rest_init+0x31/0x300 [ 211.436320][ C0] cpu_startup_entry+0x42/0x60 [ 211.436334][ C0] rest_init+0x2dc/0x300 [ 211.436351][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 211.436366][ C0] start_kernel+0x47f/0x500 [ 211.436387][ C0] x86_64_start_reservations+0x2a/0x30 [ 211.436410][ C0] x86_64_start_kernel+0x9f/0xa0 [ 211.436430][ C0] common_startup_64+0x13e/0x147 [ 211.436457][ C0] [ 211.436465][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.474 msecs [ 211.436985][ C1] rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g9181 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 211.956071][ C1] rcu: Possible timer handling issue on cpu=0 timer-softirq=3960 [ 211.963884][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g9181 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 211.975525][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 211.985512][ C1] rcu: RCU grace-period kthread stack dump: [ 211.991420][ C1] task:rcu_preempt state:I stack:26072 pid:17 tgid:17 ppid:2 flags:0x00004000 [ 212.001711][ C1] Call Trace: [ 212.005004][ C1] [ 212.008036][ C1] __schedule+0x1850/0x4c30 [ 212.012600][ C1] ? __pfx___schedule+0x10/0x10 [ 212.017472][ C1] ? __pfx_lock_release+0x10/0x10 [ 212.022611][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 212.028960][ C1] ? schedule+0x90/0x320 [ 212.033222][ C1] schedule+0x14b/0x320 [ 212.037409][ C1] schedule_timeout+0x15a/0x290 [ 212.042278][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 212.047669][ C1] ? __pfx_process_timeout+0x10/0x10 [ 212.052978][ C1] ? prepare_to_swait_event+0x330/0x350 [ 212.058546][ C1] rcu_gp_fqs_loop+0x2df/0x1330 [ 212.063412][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 212.068636][ C1] ? __pfx_rcu_watching_snap_save+0x10/0x10 [ 212.074555][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 212.079865][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 212.085779][ C1] ? finish_swait+0xd4/0x1e0 [ 212.090390][ C1] rcu_gp_kthread+0xa7/0x3b0 [ 212.095001][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 212.100210][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 212.106128][ C1] ? __kthread_parkme+0x169/0x1d0 [ 212.111167][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 212.116378][ C1] kthread+0x2f0/0x390 [ 212.120460][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 212.125672][ C1] ? __pfx_kthread+0x10/0x10 [ 212.130274][ C1] ret_from_fork+0x4b/0x80 [ 212.134703][ C1] ? __pfx_kthread+0x10/0x10 [ 212.139328][ C1] ret_from_fork_asm+0x1a/0x30 [ 212.144129][ C1]