./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3845139044 <...> Warning: Permanently added '10.128.1.211' (ED25519) to the list of known hosts. execve("./syz-executor3845139044", ["./syz-executor3845139044"], 0x7ffe011587a0 /* 10 vars */) = 0 brk(NULL) = 0x55555fa6d000 brk(0x55555fa6de00) = 0x55555fa6de00 arch_prctl(ARCH_SET_FS, 0x55555fa6d480) = 0 set_tid_address(0x55555fa6d750) = 5853 set_robust_list(0x55555fa6d760, 24) = 0 rseq(0x55555fa6dda0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3845139044", 4096) = 28 getrandom("\x4e\x15\x1f\xb9\xc0\xec\xc8\x72", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555fa6de00 brk(0x55555fa8ee00) = 0x55555fa8ee00 brk(0x55555fa8f000) = 0x55555fa8f000 mprotect(0x7fc11a539000, 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 mkdir("/syzcgroup", 0777) = 0 mkdir("/syzcgroup/unified", 0777) = 0 mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL) = 0 chmod("/syzcgroup/unified", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/unified/cgroup.subtree_control", O_WRONLY) = 3 write(3, "+cpu", 4) = 4 write(3, "+io", 3) = 3 write(3, "+pids", 5) = 5 close(3) = 0 mkdir("/syzcgroup/net", 0777) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "net") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "devices") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "blkio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "freezer") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) [ 144.738454][ T5853] cgroup: Unknown subsys name 'net' mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = 0 chmod("/syzcgroup/net", 0777) = 0 mkdir("/syzcgroup/cpu", 0777) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "hugetlb") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "rlimit") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/cpu", "cgroup", 0, "memory") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) [ 144.886382][ T5853] cgroup: Unknown subsys name 'cpuset' [ 144.898265][ T5853] cgroup: Unknown subsys name 'rlimit' mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct,hugetlb,memory") = 0 chmod("/syzcgroup/cpu", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cgroup.clone_children", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cpuset.memory_pressure_enabled", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7fc11a489350, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fc11a495130}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7fc11a489350, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7fc11a495130}, NULL, 8) = 0 mkdir("./syzkaller.RaPufR", 0700) = 0 chmod("./syzkaller.RaPufR", 0777) = 0 chdir("./syzkaller.RaPufR") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555fa6d750) = 5854 ./strace-static-x86_64: Process 5854 attached [pid 5854] set_robust_list(0x55555fa6d760, 24) = 0 [pid 5854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5854] getppid() = 0 [pid 5854] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5854] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5854] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5854] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5854] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5854] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5854] unshare(CLONE_NEWNS) = 0 [pid 5854] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5854] unshare(CLONE_NEWIPC) = 0 [pid 5854] unshare(CLONE_NEWCGROUP) = 0 [pid 5854] unshare(CLONE_NEWUTS) = 0 [pid 5854] unshare(CLONE_SYSVSEM) = 0 [pid 5854] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "16777216", 8) = 8 [pid 5854] close(3) = 0 [pid 5854] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "536870912", 9) = 9 [pid 5854] close(3) = 0 [pid 5854] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "1024", 4) = 4 [pid 5854] close(3) = 0 [pid 5854] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "8192", 4) = 4 [pid 5854] close(3) = 0 [pid 5854] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "1024", 4) = 4 [pid 5854] close(3) = 0 [pid 5854] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "1024", 4) = 4 [pid 5854] close(3) = 0 [pid 5854] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5854] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5854] close(3) = 0 [pid 5854] getpid() = 1 [pid 5854] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0f 1e fa 48 89 fe 48 c7 c7 a0 35 60 8c e9 bd fe ff ff 66 2e 0f [ 263.813762][ C1] RSP: 0018:ffffc90000a18b18 EFLAGS: 00000046 [ 263.813785][ C1] RAX: 0000000000000000 RBX: ffffc90000a18b80 RCX: ffffffff81704804 [ 263.813797][ C1] RDX: 0000000000000000 RSI: ffffffff8c603580 RDI: ffffffff8c0ad7a0 [ 263.813810][ C1] RBP: ffffc90000a18c78 R08: ffffffff901bdc6f R09: 1ffffffff2037b8d [ 263.813823][ C1] R10: dffffc0000000000 R11: fffffbfff2037b8e R12: 1ffff9200014316c [ 263.813836][ C1] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000046 [ 263.813848][ C1] FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 263.813862][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 263.813874][ C1] CR2: 00007fc11a4ebed0 CR3: 000000002fc92000 CR4: 00000000003526f0 [ 263.813895][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 263.813905][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 263.813916][ C1] Call Trace: [ 263.813925][ C1] [ 263.813934][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 263.813971][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 263.814012][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 263.814049][ C1] ? nmi_handle+0x2a/0x5a0 [ 263.814088][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 263.814122][ C1] ? nmi_handle+0x14f/0x5a0 [ 263.814149][ C1] ? nmi_handle+0x2a/0x5a0 [ 263.814178][ C1] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 263.814213][ C1] ? default_do_nmi+0x63/0x160 [ 263.814251][ C1] ? exc_nmi+0x123/0x1f0 [ 263.814287][ C1] ? end_repeat_nmi+0xf/0x53 [ 263.814323][ C1] ? lock_acquire+0xd4/0x550 [ 263.814359][ C1] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 263.814395][ C1] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 263.814432][ C1] ? __pfx___this_cpu_preempt_check+0x10/0x10 [ 263.814467][ C1] [ 263.814476][ C1] [ 263.814486][ C1] lock_acquire+0x1b0/0x550 [ 263.814527][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 263.814564][ C1] ? advance_sched+0x9b4/0xca0 [ 263.814595][ C1] ? do_raw_spin_lock+0x14f/0x370 [ 263.814628][ C1] ? __pfx_lock_release+0x10/0x10 [ 263.814658][ C1] ? do_raw_spin_unlock+0x13c/0x8b0 [ 263.814680][ C1] ? taprio_set_budgets+0x32c/0x370 [ 263.814703][ C1] ? advance_sched+0xa02/0xca0 [ 263.814725][ C1] advance_sched+0xa1e/0xca0 [ 263.814746][ C1] ? advance_sched+0xa02/0xca0 [ 263.814774][ C1] ? __pfx_advance_sched+0x10/0x10 [ 263.814796][ C1] __hrtimer_run_queues+0x59b/0xd50 [ 263.814814][ C1] ? ktime_get_update_offsets_now+0x3c/0x250 [ 263.814846][ C1] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 263.814864][ C1] ? ktime_get_update_offsets_now+0x22d/0x250 [ 263.814896][ C1] hrtimer_interrupt+0x396/0x990 [ 263.814924][ C1] __sysvec_apic_timer_interrupt+0x110/0x420 [ 263.814943][ C1] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 263.814963][ C1] [ 263.814968][ C1] [ 263.814975][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 263.814995][ C1] RIP: 0010:acpi_safe_halt+0x21/0x30 [ 263.815020][ C1] Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 80 d7 03 00 48 f7 00 08 00 00 00 75 10 66 90 0f 00 2d 55 28 ab 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 [ 263.815033][ C1] RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246 [ 263.815048][ C1] RAX: ffff88801da80000 RBX: ffff8880212c8864 RCX: 0000000000041ee1 [ 263.815061][ C1] RDX: 0000000000000001 RSI: ffff8880212c8800 RDI: ffff8880212c8864 [ 263.815073][ C1] RBP: 000000000003a978 R08: ffff8880b8737e9b R09: 1ffff110170e6fd3 [ 263.815086][ C1] R10: dffffc0000000000 R11: ffffffff8bbeda00 R12: ffff8881482db800 [ 263.815099][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f11c460 [ 263.815112][ C1] ? __pfx_acpi_idle_enter+0x10/0x10 [ 263.815141][ C1] acpi_idle_enter+0xe4/0x140 [ 263.815166][ C1] cpuidle_enter_state+0x109/0x470 [ 263.815189][ C1] ? __pfx_menu_select+0x10/0x10 [ 263.815207][ C1] cpuidle_enter+0x5d/0xa0 [ 263.815232][ C1] do_idle+0x375/0x5d0 [ 263.815258][ C1] ? __pfx_do_idle+0x10/0x10 [ 263.815287][ C1] cpu_startup_entry+0x42/0x60 [ 263.815308][ C1] start_secondary+0x102/0x110 [ 263.815331][ C1] common_startup_64+0x13e/0x147 [ 263.815359][ C1] [ 263.815367][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.755 msecs [ 263.815604][ C0] rcu: rcu_preempt kthread timer wakeup didn't happen for 10358 jiffies! g10653 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 264.295025][ C0] rcu: Possible timer handling issue on cpu=1 timer-softirq=4268 [ 264.302859][ C0] rcu: rcu_preempt kthread starved for 10359 jiffies! g10653 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 264.314252][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 264.324242][ C0] rcu: RCU grace-period kthread stack dump: [ 264.330158][ C0] task:rcu_preempt state:I stack:25824 pid:17 tgid:17 ppid:2 flags:0x00004000 [ 264.340384][ C0] Call Trace: [ 264.343690][ C0] [ 264.346649][ C0] __schedule+0x17fa/0x4bd0 [ 264.351208][ C0] ? __pfx___schedule+0x10/0x10 [ 264.356094][ C0] ? __pfx_lock_release+0x10/0x10 [ 264.361163][ C0] ? __asan_memset+0x23/0x50 [ 264.365793][ C0] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 264.371658][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 264.378024][ C0] ? schedule+0x90/0x320 [ 264.382388][ C0] schedule+0x14b/0x320 [ 264.386580][ C0] schedule_timeout+0x1be/0x310 [ 264.391481][ C0] ? __pfx_schedule_timeout+0x10/0x10 [ 264.396892][ C0] ? __pfx_process_timeout+0x10/0x10 [ 264.402218][ C0] ? prepare_to_swait_event+0x330/0x350 [ 264.407809][ C0] rcu_gp_fqs_loop+0x2df/0x1330 [ 264.412689][ C0] ? lockdep_hardirqs_on+0x99/0x150 [ 264.417953][ C0] ? __pfx_rcu_watching_snap_recheck+0x10/0x10 [ 264.424158][ C0] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 264.429482][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 264.435421][ C0] ? finish_swait+0xd4/0x1e0 [ 264.440055][ C0] rcu_gp_kthread+0xa7/0x3b0 [ 264.444679][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 264.449899][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 264.455833][ C0] ? __kthread_parkme+0x169/0x1d0 [ 264.460898][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 264.466122][ C0] kthread+0x2f0/0x390 [ 264.470229][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 264.475455][ C0] ? __pfx_kthread+0x10/0x10 [ 264.480072][ C0] ret_from_fork+0x4b/0x80 [ 264.484528][ C0] ? __pfx_kthread+0x10/0x10 [ 264.489154][ C0] ret_from_fork_asm+0x1a/0x30 [ 264.493975][ C0]