./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2495866170 <...> Warning: Permanently added '10.128.0.191' (ED25519) to the list of known hosts. execve("./syz-executor2495866170", ["./syz-executor2495866170"], 0x7fff337e9950 /* 10 vars */) = 0 brk(NULL) = 0x55557d455000 brk(0x55557d455d00) = 0x55557d455d00 arch_prctl(ARCH_SET_FS, 0x55557d455380) = 0 set_tid_address(0x55557d455650) = 5069 set_robust_list(0x55557d455660, 24) = 0 rseq(0x55557d455ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2495866170", 4096) = 28 getrandom("\xe2\xea\x7a\xc1\x92\x91\x94\x5b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557d455d00 brk(0x55557d476d00) = 0x55557d476d00 brk(0x55557d477000) = 0x55557d477000 mprotect(0x7fda7a41d000, 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=0x55557d455650) = 5070 ./strace-static-x86_64: Process 5070 attached [pid 5070] set_robust_list(0x55557d455660, 24) = 0 [pid 5070] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5070] setsid() = 1 [pid 5070] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5070] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5070] unshare(CLONE_NEWNS) = 0 [pid 5070] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5070] unshare(CLONE_NEWIPC) = 0 [pid 5070] unshare(CLONE_NEWCGROUP) = 0 [pid 5070] unshare(CLONE_NEWUTS) = 0 [pid 5070] unshare(CLONE_SYSVSEM) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "16777216", 8) = 8 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "536870912", 9) = 9 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "8192", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5070] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5070] close(3) = 0 [pid 5070] getpid() = 1 [pid 5070] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< c0 0f 85 62 05 00 00 83 3d f5 ab 15 0e 00 0f 84 c7 03 00 00 4d [ 186.002495][ C0] RSP: 0018:ffffc90000007a60 EFLAGS: 00000013 [ 186.002514][ C0] RAX: 0000000000000000 RBX: 0000000000000046 RCX: ffffc90000007a03 [ 186.002529][ C0] RDX: 1ffff92000000f5c RSI: ffffffff8baacec0 RDI: ffffffff8bfed300 [ 186.002545][ C0] RBP: ffffc90000007b90 R08: ffffffff8f873a6f R09: 1ffffffff1f0e74d [ 186.002561][ C0] R10: dffffc0000000000 R11: fffffbfff1f0e74e R12: 1ffff92000000f58 [ 186.002578][ C0] R13: ffffffff8de94680 R14: ffffc90000007b10 R15: dffffc0000000000 [ 186.002597][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 186.002615][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 186.002631][ C0] CR2: 00007fda7a4262d0 CR3: 00000000797a6000 CR4: 0000000000350ef0 [ 186.002648][ C0] Call Trace: [ 186.002657][ C0] [ 186.002665][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 186.002695][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 186.002720][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 186.002756][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 186.002785][ C0] ? nmi_handle+0x151/0x580 [ 186.002809][ C0] ? nmi_handle+0x2a/0x580 [ 186.002832][ C0] ? lock_release+0x1c8/0x9d0 [ 186.002853][ C0] ? default_do_nmi+0x63/0x160 [ 186.002881][ C0] ? exc_nmi+0x123/0x1f0 [ 186.002906][ C0] ? end_repeat_nmi+0xf/0x53 [ 186.002941][ C0] ? lock_release+0x1c8/0x9d0 [ 186.002963][ C0] ? lock_release+0x1c8/0x9d0 [ 186.002987][ C0] ? lock_release+0x1c8/0x9d0 [ 186.003009][ C0] [ 186.003016][ C0] [ 186.003028][ C0] ? debug_object_deactivate+0x2d5/0x390 [ 186.003062][ C0] ? do_raw_spin_lock+0x14f/0x370 [ 186.003094][ C0] ? __pfx_lock_release+0x10/0x10 [ 186.003122][ C0] ? srso_return_thunk+0x5/0x5f [ 186.003147][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 186.003185][ C0] _raw_spin_unlock_irqrestore+0x79/0x140 [ 186.003220][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 186.003262][ C0] debug_object_deactivate+0x2d5/0x390 [ 186.003308][ C0] ? __pfx_debug_object_deactivate+0x10/0x10 [ 186.003342][ C0] ? srso_return_thunk+0x5/0x5f [ 186.003366][ C0] ? timerqueue_add+0x260/0x290 [ 186.003389][ C0] ? __pfx__raw_spin_lock_irq+0x10/0x10 [ 186.003427][ C0] debug_deactivate+0x1b/0x200 [ 186.003459][ C0] __hrtimer_run_queues+0x30f/0xd00 [ 186.003500][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 186.003528][ C0] ? srso_return_thunk+0x5/0x5f [ 186.003553][ C0] ? ktime_get_update_offsets_now+0x411/0x430 [ 186.003581][ C0] hrtimer_interrupt+0x396/0x990 [ 186.003624][ C0] __sysvec_apic_timer_interrupt+0x109/0x3a0 [ 186.003662][ C0] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 186.003694][ C0] [ 186.003701][ C0] [ 186.003709][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 186.003738][ C0] RIP: 0010:acpi_safe_halt+0x21/0x30 [ 186.003762][ C0] Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 d0 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 95 10 94 00 f3 0f 1e fa fb f4 e9 09 d2 0a 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 [ 186.003779][ C0] RSP: 0018:ffffffff8de07ca8 EFLAGS: 00000246 [ 186.003796][ C0] RAX: ffffffff8de94680 RBX: ffff88801aac7064 RCX: 000000000001d6a9 [ 186.003812][ C0] RDX: 0000000000000001 RSI: ffff88801aac7000 RDI: ffff88801aac7064 [ 186.003828][ C0] RBP: 000000000003a138 R08: ffff8880b9437d0b R09: 1ffff11017286fa1 [ 186.003843][ C0] R10: dffffc0000000000 R11: ffffffff8b747600 R12: ffff88801a30b000 [ 186.003860][ C0] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8e8a6dc0 [ 186.003877][ C0] ? __pfx_acpi_idle_enter+0x10/0x10 [ 186.003907][ C0] ? srso_return_thunk+0x5/0x5f [ 186.003931][ C0] acpi_idle_enter+0xe4/0x140 [ 186.003956][ C0] cpuidle_enter_state+0x11a/0x490 [ 186.003978][ C0] ? __pfx_menu_select+0x10/0x10 [ 186.004009][ C0] cpuidle_enter+0x5d/0xa0 [ 186.004032][ C0] do_idle+0x375/0x5d0 [ 186.004056][ C0] ? __pfx___schedule+0x10/0x10 [ 186.004081][ C0] ? __pfx_do_idle+0x10/0x10 [ 186.004103][ C0] ? srso_return_thunk+0x5/0x5f [ 186.004130][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 186.004165][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 186.004201][ C0] ? rest_init+0x35/0x300 [ 186.004225][ C0] ? rest_init+0x35/0x300 [ 186.004248][ C0] cpu_startup_entry+0x42/0x60 [ 186.004271][ C0] rest_init+0x2e0/0x300 [ 186.004299][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 186.004331][ C0] arch_call_rest_init+0xe/0x10 [ 186.004354][ C0] start_kernel+0x47a/0x500 [ 186.004377][ C0] x86_64_start_reservations+0x2a/0x30 [ 186.004406][ C0] x86_64_start_kernel+0x99/0xa0 [ 186.004433][ C0] common_startup_64+0x13e/0x147 [ 186.004469][ C0] [ 186.004477][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.092 msecs [ 186.005380][ C1] rcu: rcu_preempt kthread timer wakeup didn't happen for 10006 jiffies! g7625 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 186.520245][ C1] rcu: Possible timer handling issue on cpu=0 timer-softirq=4212 [ 186.528057][ C1] rcu: rcu_preempt kthread starved for 10007 jiffies! g7625 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 186.539356][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 186.549336][ C1] rcu: RCU grace-period kthread stack dump: [ 186.555234][ C1] task:rcu_preempt state:I stack:26256 pid:16 tgid:16 ppid:2 flags:0x00004000 [ 186.565422][ C1] Call Trace: [ 186.568711][ C1] [ 186.571657][ C1] __schedule+0x17d3/0x4a20 [ 186.576209][ C1] ? srso_return_thunk+0x5/0x5f [ 186.581092][ C1] ? __pfx___schedule+0x10/0x10 [ 186.585962][ C1] ? __pfx_lock_release+0x10/0x10 [ 186.591005][ C1] ? __asan_memset+0x23/0x50 [ 186.595624][ C1] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 186.601456][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 186.607806][ C1] ? schedule+0x90/0x320 [ 186.612067][ C1] schedule+0x14b/0x320 [ 186.616248][ C1] schedule_timeout+0x1be/0x310 [ 186.621128][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 186.626531][ C1] ? __pfx_process_timeout+0x10/0x10 [ 186.631843][ C1] ? srso_return_thunk+0x5/0x5f [ 186.636719][ C1] ? prepare_to_swait_event+0x32e/0x350 [ 186.642304][ C1] rcu_gp_fqs_loop+0x2df/0x1370 [ 186.647204][ C1] ? __pfx_rcu_implicit_dynticks_qs+0x10/0x10 [ 186.653288][ C1] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 186.659210][ C1] ? srso_return_thunk+0x5/0x5f [ 186.664081][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 186.669310][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 186.674616][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 186.680549][ C1] ? srso_return_thunk+0x5/0x5f [ 186.685422][ C1] ? finish_swait+0xd4/0x1e0 [ 186.690049][ C1] rcu_gp_kthread+0xa7/0x3b0 [ 186.694681][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 186.699912][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 186.705839][ C1] ? srso_return_thunk+0x5/0x5f [ 186.710716][ C1] ? __kthread_parkme+0x169/0x1d0 [ 186.715768][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 186.720997][ C1] kthread+0x2f2/0x390 [ 186.725092][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 186.730321][ C1] ? __pfx_kthread+0x10/0x10 [ 186.734935][ C1] ret_from_fork+0x4d/0x80 [ 186.739473][ C1] ? __pfx_kthread+0x10/0x10 [ 186.744087][ C1] ret_from_fork_asm+0x1a/0x30 [ 186.748900][ C1]