./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4180364017 <...> Warning: Permanently added '10.128.0.138' (ED25519) to the list of known hosts. execve("./syz-executor4180364017", ["./syz-executor4180364017"], 0x7ffea514f6b0 /* 10 vars */) = 0 brk(NULL) = 0x5555605ca000 brk(0x5555605cad00) = 0x5555605cad00 arch_prctl(ARCH_SET_FS, 0x5555605ca380) = 0 set_tid_address(0x5555605ca650) = 5089 set_robust_list(0x5555605ca660, 24) = 0 rseq(0x5555605caca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4180364017", 4096) = 28 getrandom("\x54\x6b\xbf\x21\x06\xfe\x26\x50", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555605cad00 brk(0x5555605ebd00) = 0x5555605ebd00 brk(0x5555605ec000) = 0x5555605ec000 mprotect(0x7f9a4e78c000, 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=0x5555605ca650) = 5090 ./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x5555605ca660, 24) = 0 [pid 5090] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setsid() = 1 [pid 5090] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5090] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5090] unshare(CLONE_NEWNS) = 0 [pid 5090] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5090] unshare(CLONE_NEWIPC) = 0 [pid 5090] unshare(CLONE_NEWCGROUP) = 0 [pid 5090] unshare(CLONE_NEWUTS) = 0 [pid 5090] unshare(CLONE_SYSVSEM) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "16777216", 8) = 8 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "536870912", 9) = 9 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "8192", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5090] close(3) = 0 [pid 5090] getpid() = 1 [pid 5090] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 8b 5c 24 20 48 8b 74 24 60 42 0f b6 04 2e 84 c0 48 8b 54 24 18 [ 174.992174][ C0] RSP: 0018:ffffc90000007d60 EFLAGS: 00000086 [ 174.992189][ C0] RAX: 0000000000000001 RBX: 0000000000000000 RCX: dffffc0000000000 [ 174.992200][ C0] RDX: 0000000000000000 RSI: ffff8880b942c9d0 RDI: ffff88807e6e5340 [ 174.992212][ C0] RBP: ffffc90000007ea8 R08: ffff88807e6e5357 R09: 0000000000000000 [ 174.992223][ C0] R10: ffff88807e6e5340 R11: ffffed100fcdca6b R12: 1ffff1101728593b [ 174.992235][ C0] R13: dffffc0000000000 R14: ffff88807e6e5340 R15: ffff8880b942c880 [ 174.992247][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 174.992261][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 174.992272][ C0] CR2: 00007f9a4e7613b0 CR3: 000000007e748000 CR4: 00000000003506f0 [ 174.992287][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 174.992297][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 174.992368][ C0] Call Trace: [ 174.992379][ C0] [ 174.992388][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 174.992424][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 174.992444][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 174.992465][ C0] ? nmi_handle+0x2a/0x5a0 [ 174.992497][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 174.992517][ C0] ? nmi_handle+0x14f/0x5a0 [ 174.992539][ C0] ? nmi_handle+0x2a/0x5a0 [ 174.992562][ C0] ? __hrtimer_run_queues+0x6e3/0xd50 [ 174.992584][ C0] ? default_do_nmi+0x63/0x160 [ 174.992606][ C0] ? exc_nmi+0x123/0x1f0 [ 174.992627][ C0] ? end_repeat_nmi+0xf/0x53 [ 174.992654][ C0] ? __hrtimer_run_queues+0x6e3/0xd50 [ 174.992676][ C0] ? __hrtimer_run_queues+0x6e3/0xd50 [ 174.992699][ C0] ? __hrtimer_run_queues+0x6e3/0xd50 [ 174.992721][ C0] [ 174.992726][ C0] [ 174.992732][ C0] ? ktime_get_update_offsets_now+0x3c/0x250 [ 174.992759][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 174.992781][ C0] ? ktime_get_update_offsets_now+0x22d/0x250 [ 174.992803][ C0] hrtimer_interrupt+0x396/0x990 [ 174.992838][ C0] __sysvec_apic_timer_interrupt+0x110/0x3f0 [ 174.992863][ C0] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 174.992880][ C0] [ 174.992885][ C0] [ 174.992891][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 174.992911][ C0] RIP: 0010:acpi_safe_halt+0x21/0x30 [ 174.992933][ C0] Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 00 d5 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d e5 c3 a2 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 [ 174.992946][ C0] RSP: 0018:ffffffff8e007ca8 EFLAGS: 00000246 [ 174.992961][ C0] RAX: ffffffff8e094680 RBX: ffff88801ce90064 RCX: 000000000001f799 [ 174.992973][ C0] RDX: 0000000000000001 RSI: ffff88801ce90000 RDI: ffff88801ce90064 [ 174.992985][ C0] RBP: 000000000003a5b8 R08: ffff8880b9437d0b R09: 1ffff11017286fa1 [ 174.992996][ C0] R10: dffffc0000000000 R11: ffffffff8b86ba30 R12: ffff88801afe8800 [ 174.993008][ C0] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8eace200 [ 174.993022][ C0] ? __pfx_acpi_idle_enter+0x10/0x10 [ 174.993048][ C0] acpi_idle_enter+0xe4/0x140 [ 174.993075][ C0] cpuidle_enter_state+0x112/0x480 [ 174.993094][ C0] ? __pfx_menu_select+0x10/0x10 [ 174.993117][ C0] cpuidle_enter+0x5d/0xa0 [ 174.993140][ C0] do_idle+0x375/0x5d0 [ 174.993163][ C0] ? __pfx_do_idle+0x10/0x10 [ 174.993180][ C0] ? poll_idle+0x40/0xb0 [ 174.993205][ C0] ? rest_init+0x31/0x300 [ 174.993224][ C0] cpu_startup_entry+0x42/0x60 [ 174.993241][ C0] rest_init+0x2dc/0x300 [ 174.993261][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 174.993289][ C0] start_kernel+0x47a/0x500 [ 174.993309][ C0] x86_64_start_reservations+0x2a/0x30 [ 174.993332][ C0] x86_64_start_kernel+0x99/0xa0 [ 174.993352][ C0] common_startup_64+0x13e/0x147 [ 174.993377][ C0] [ 174.993386][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.321 msecs [ 174.994057][ C1] rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g6165 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 175.431156][ C1] rcu: Possible timer handling issue on cpu=0 timer-softirq=2366 [ 175.438959][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g6165 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 175.450252][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 175.460215][ C1] rcu: RCU grace-period kthread stack dump: [ 175.466110][ C1] task:rcu_preempt state:I stack:26008 pid:17 tgid:17 ppid:2 flags:0x00004000 [ 175.476373][ C1] Call Trace: [ 175.479651][ C1] [ 175.482587][ C1] __schedule+0x17e8/0x4a20 [ 175.487130][ C1] ? __pfx___schedule+0x10/0x10 [ 175.492017][ C1] ? __pfx_lock_release+0x10/0x10 [ 175.497051][ C1] ? __asan_memset+0x23/0x50 [ 175.501647][ C1] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 175.507463][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 175.513796][ C1] ? schedule+0x90/0x320 [ 175.518047][ C1] schedule+0x14b/0x320 [ 175.522222][ C1] schedule_timeout+0x1be/0x310 [ 175.527079][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 175.532563][ C1] ? __pfx_process_timeout+0x10/0x10 [ 175.538284][ C1] ? prepare_to_swait_event+0x32e/0x350 [ 175.544035][ C1] rcu_gp_fqs_loop+0x2df/0x1330 [ 175.549160][ C1] ? __pfx_rcu_gp_init+0x10/0x10 [ 175.554105][ C1] ? __pfx_dyntick_save_progress_counter+0x10/0x10 [ 175.560612][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 175.565898][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 175.572500][ C1] ? finish_swait+0xd4/0x1e0 [ 175.577270][ C1] rcu_gp_kthread+0xa7/0x3b0 [ 175.582235][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 175.587434][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 175.593337][ C1] ? __kthread_parkme+0x169/0x1d0 [ 175.598371][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 175.603579][ C1] kthread+0x2f0/0x390 [ 175.607655][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 175.612863][ C1] ? __pfx_kthread+0x10/0x10 [ 175.617458][ C1] ret_from_fork+0x4b/0x80 [ 175.621879][ C1] ? __pfx_kthread+0x10/0x10 [ 175.626476][ C1] ret_from_fork_asm+0x1a/0x30 [ 175.631291][ C1]