./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3915876377 <...> Warning: Permanently added '10.128.1.141' (ED25519) to the list of known hosts. execve("./syz-executor3915876377", ["./syz-executor3915876377"], 0x7ffda9e54e70 /* 10 vars */) = 0 brk(NULL) = 0x555556b05000 brk(0x555556b05d00) = 0x555556b05d00 arch_prctl(ARCH_SET_FS, 0x555556b05380) = 0 set_tid_address(0x555556b05650) = 5064 set_robust_list(0x555556b05660, 24) = 0 rseq(0x555556b05ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3915876377", 4096) = 28 getrandom("\x70\x99\x5b\xd9\x37\x17\xab\x96", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556b05d00 brk(0x555556b26d00) = 0x555556b26d00 brk(0x555556b27000) = 0x555556b27000 mprotect(0x7f8482435000, 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=0x555556b05650) = 5065 ./strace-static-x86_64: Process 5065 attached [pid 5065] set_robust_list(0x555556b05660, 24) = 0 [pid 5065] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5065] setsid() = 1 [pid 5065] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5065] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5065] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5065] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5065] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5065] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5065] unshare(CLONE_NEWNS) = 0 [pid 5065] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5065] unshare(CLONE_NEWIPC) = 0 [pid 5065] unshare(CLONE_NEWCGROUP) = 0 [pid 5065] unshare(CLONE_NEWUTS) = 0 [pid 5065] unshare(CLONE_SYSVSEM) = 0 [pid 5065] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "16777216", 8) = 8 [pid 5065] close(3) = 0 [pid 5065] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "536870912", 9) = 9 [pid 5065] close(3) = 0 [pid 5065] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "1024", 4) = 4 [pid 5065] close(3) = 0 [pid 5065] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "8192", 4) = 4 [pid 5065] close(3) = 0 [pid 5065] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "1024", 4) = 4 [pid 5065] close(3) = 0 [pid 5065] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "1024", 4) = 4 [pid 5065] close(3) = 0 [pid 5065] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5065] close(3) = 0 [pid 5065] getpid() = 1 [pid 5065] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< c7 03 00 00 00 00 43 80 3c 2c 00 74 08 4c 89 f7 e8 65 b4 73 00 [ 170.523685][ C0] RSP: 0018:ffffc90000007d60 EFLAGS: 00000046 [ 170.523700][ C0] RAX: 1ffff11017285769 RBX: ffff8880b942bb48 RCX: ffff88802c6b1dc0 [ 170.523712][ C0] RDX: 0000000080010203 RSI: 1ffff11017285762 RDI: ffff88802a7e3340 [ 170.523723][ C0] RBP: ffffc90000007ea8 R08: ffff88802a7e3357 R09: 0000000000000000 [ 170.523734][ C0] R10: ffff88802a7e3340 R11: ffffed10054fc66b R12: 1ffff1101728576b [ 170.523745][ C0] R13: dffffc0000000000 R14: ffff8880b942bb58 R15: ffff8880b942ba00 [ 170.523757][ C0] FS: 0000555556b05380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 170.523771][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 170.523782][ C0] CR2: 0000555556b05650 CR3: 0000000028fa6000 CR4: 00000000003506f0 [ 170.523796][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 170.523805][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 170.523815][ C0] Call Trace: [ 170.523821][ C0] [ 170.523828][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 170.523849][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 170.523870][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 170.523885][ C0] ? nmi_handle+0x2a/0x580 [ 170.523906][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 170.523923][ C0] ? nmi_handle+0x14f/0x580 [ 170.523937][ C0] ? nmi_handle+0x2a/0x580 [ 170.523951][ C0] ? __hrtimer_run_queues+0x735/0xd00 [ 170.523965][ C0] ? default_do_nmi+0x63/0x160 [ 170.523981][ C0] ? exc_nmi+0x121/0x210 [ 170.523995][ C0] ? end_repeat_nmi+0xf/0x60 [ 170.524021][ C0] ? __hrtimer_run_queues+0x735/0xd00 [ 170.524036][ C0] ? __hrtimer_run_queues+0x735/0xd00 [ 170.524052][ C0] ? __hrtimer_run_queues+0x735/0xd00 [ 170.524067][ C0] [ 170.524071][ C0] [ 170.524085][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 170.524100][ C0] ? ktime_get_update_offsets_now+0x411/0x430 [ 170.524123][ C0] hrtimer_interrupt+0x396/0x990 [ 170.524149][ C0] __sysvec_apic_timer_interrupt+0x107/0x3a0 [ 170.524169][ C0] sysvec_apic_timer_interrupt+0x92/0xb0 [ 170.524187][ C0] [ 170.524191][ C0] [ 170.524196][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 170.524222][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 [ 170.524241][ C0] Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 fe 18 84 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 f3 db f2 f5 65 8b 05 94 4e 92 74 85 c0 74 43 48 c7 04 24 0e 36 [ 170.524253][ C0] RSP: 0018:ffffc90003d2ea60 EFLAGS: 00000206 [ 170.524267][ C0] RAX: 6df56a20e028e700 RBX: 1ffff920007a5d50 RCX: ffffffff817187da [ 170.524278][ C0] RDX: dffffc0000000000 RSI: ffffffff8baab5e0 RDI: 0000000000000001 [ 170.524289][ C0] RBP: ffffc90003d2eaf0 R08: ffffffff92c8c4e7 R09: 1ffffffff259189c [ 170.524300][ C0] R10: dffffc0000000000 R11: fffffbfff259189d R12: dffffc0000000000 [ 170.524311][ C0] R13: 1ffff920007a5d4c R14: ffffc90003d2ea80 R15: 0000000000000246 [ 170.524326][ C0] ? mark_lock+0x9a/0x350 [ 170.524343][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 170.524366][ C0] taprio_change+0x4912/0x57d0 [ 170.524398][ C0] ? __pfx_taprio_change+0x10/0x10 [ 170.524416][ C0] ? __pfx___might_resched+0x10/0x10 [ 170.524432][ C0] ? static_key_slow_inc_cpuslocked+0xdd/0x150 [ 170.524450][ C0] ? __pfx_lock_release+0x10/0x10 [ 170.524468][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 170.524484][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 170.524499][ C0] ? on_each_cpu_cond_mask+0x62/0x80 [ 170.524537][ C0] taprio_init+0x9da/0xc80 [ 170.524551][ C0] ? ____sys_sendmsg+0x525/0x7d0 [ 170.524567][ C0] ? __sys_sendmsg+0x2b0/0x3a0 [ 170.524582][ C0] ? do_syscall_64+0xf9/0x240 [ 170.524607][ C0] ? __pfx_taprio_init+0x10/0x10 [ 170.524622][ C0] ? lockdep_rtnl_is_held+0x26/0x40 [ 170.524637][ C0] ? qdisc_lookup+0x350/0x6b0 [ 170.524654][ C0] ? __pfx_taprio_init+0x10/0x10 [ 170.524667][ C0] qdisc_create+0x9d4/0x1190 [ 170.524691][ C0] ? __pfx_qdisc_create+0x10/0x10 [ 170.524714][ C0] tc_modify_qdisc+0xa26/0x1e40 [ 170.524741][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 170.524771][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 170.524789][ C0] rtnetlink_rcv_msg+0x885/0x1040 [ 170.524810][ C0] ? rtnetlink_rcv_msg+0x208/0x1040 [ 170.524829][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 170.524850][ C0] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 170.524871][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 170.524893][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 170.524913][ C0] ? lockdep_hardirqs_on+0x98/0x140 [ 170.524932][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 170.524951][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 170.524968][ C0] ? __pfx___local_bh_enable_ip+0x10/0x10 [ 170.524991][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 170.525008][ C0] ? __dev_queue_xmit+0x15fd/0x3b10 [ 170.525030][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 170.525051][ C0] ? ref_tracker_free+0x643/0x7e0 [ 170.525072][ C0] netlink_rcv_skb+0x1e3/0x430 [ 170.525093][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 170.525113][ C0] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 170.525143][ C0] ? netlink_deliver_tap+0x2e/0x1b0 [ 170.525165][ C0] netlink_unicast+0x7ea/0x980 [ 170.525188][ C0] ? __pfx_netlink_unicast+0x10/0x10 [ 170.525211][ C0] ? __virt_addr_valid+0x44e/0x520 [ 170.525231][ C0] ? __phys_addr_symbol+0x2f/0x70 [ 170.525249][ C0] ? __check_object_size+0x4bb/0xa00 [ 170.525265][ C0] ? bpf_lsm_netlink_send+0x9/0x10 [ 170.525285][ C0] netlink_sendmsg+0xa3b/0xd70 [ 170.525305][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 170.525320][ C0] ? __import_iovec+0x552/0x890 [ 170.525339][ C0] ? aa_sock_msg_perm+0x91/0x160 [ 170.525360][ C0] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 170.525377][ C0] ? security_socket_sendmsg+0x87/0xb0 [ 170.525396][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 170.525409][ C0] __sock_sendmsg+0x221/0x270 [ 170.525431][ C0] ____sys_sendmsg+0x525/0x7d0 [ 170.525452][ C0] ? __pfx_____sys_sendmsg+0x10/0x10 [ 170.525471][ C0] ? do_raw_spin_lock+0x14e/0x370 [ 170.525493][ C0] __sys_sendmsg+0x2b0/0x3a0 [ 170.525511][ C0] ? __pfx___sys_sendmsg+0x10/0x10 [ 170.525533][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 170.525557][ C0] ? _raw_spin_unlock_irq+0x2e/0x50 [ 170.525574][ C0] ? ptrace_notify+0x278/0x380 [ 170.525598][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 170.525619][ C0] ? do_syscall_64+0x108/0x240 [ 170.525638][ C0] ? syscall_trace_enter+0x5e/0x150 [ 170.525660][ C0] do_syscall_64+0xf9/0x240 [ 170.525680][ C0] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 170.525700][ C0] RIP: 0033:0x7f84823bcde9 [ 170.525718][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 170.525729][ C0] RSP: 002b:00007ffe2b532198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 170.525744][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f84823bcde9 [ 170.525755][ C0] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 170.525764][ C0] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000100000000 [ 170.525775][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe2b5321f0 [ 170.525784][ C0] R13: 0000000000000001 R14: 00007ffe2b5321f0 R15: 0000000000000003 [ 170.525802][ C0] [ 170.525809][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.211 msecs [ 170.526592][ C1] rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g6589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 171.301738][ C1] rcu: Possible timer handling issue on cpu=0 timer-softirq=1889 [ 171.309553][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g6589 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 171.320927][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 171.330895][ C1] rcu: RCU grace-period kthread stack dump: [ 171.336781][ C1] task:rcu_preempt state:I stack:24656 pid:17 tgid:17 ppid:2 flags:0x00004000 [ 171.346956][ C1] Call Trace: [ 171.350242][ C1] [ 171.353187][ C1] __schedule+0x17d1/0x49f0 [ 171.357730][ C1] ? __pfx___schedule+0x10/0x10 [ 171.362594][ C1] ? __pfx_lock_release+0x10/0x10 [ 171.367639][ C1] ? __pfx_lockdep_init_map_type+0x10/0x10 [ 171.373461][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 171.379809][ C1] ? schedule+0x8e/0x260 [ 171.384062][ C1] schedule+0x149/0x260 [ 171.388231][ C1] schedule_timeout+0x1bd/0x310 [ 171.393091][ C1] ? __pfx_schedule_timeout+0x10/0x10 [ 171.398476][ C1] ? __pfx_process_timeout+0x10/0x10 [ 171.403786][ C1] ? prepare_to_swait_event+0x32d/0x350 [ 171.409352][ C1] rcu_gp_fqs_loop+0x2df/0x1330 [ 171.414215][ C1] ? lockdep_hardirqs_on+0x98/0x140 [ 171.419432][ C1] ? __pfx_rcu_gp_init+0x10/0x10 [ 171.424385][ C1] ? lockdep_hardirqs_on+0x98/0x140 [ 171.429596][ C1] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 171.434891][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 171.440800][ C1] ? finish_swait+0xd3/0x1e0 [ 171.445403][ C1] rcu_gp_kthread+0xa7/0x3b0 [ 171.450009][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 171.455219][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 171.461127][ C1] ? __kthread_parkme+0x168/0x1d0 [ 171.466171][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 171.471383][ C1] kthread+0x2ef/0x390 [ 171.475462][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 171.480669][ C1] ? __pfx_kthread+0x10/0x10 [ 171.485266][ C1] ret_from_fork+0x4b/0x80 [ 171.489696][ C1] ? __pfx_kthread+0x10/0x10 [ 171.494294][ C1] ret_from_fork_asm+0x1b/0x30 [ 171.499088][ C1]