./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1007374873 <...> Warning: Permanently added '10.128.1.101' (ED25519) to the list of known hosts. execve("./syz-executor1007374873", ["./syz-executor1007374873"], 0x7ffe609729e0 /* 10 vars */) = 0 brk(NULL) = 0x555584ec6000 brk(0x555584ec6d00) = 0x555584ec6d00 arch_prctl(ARCH_SET_FS, 0x555584ec6380) = 0 set_tid_address(0x555584ec6650) = 5832 set_robust_list(0x555584ec6660, 24) = 0 rseq(0x555584ec6ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1007374873", 4096) = 28 getrandom("\x81\x20\xa2\x75\xe6\x8d\x09\xf6", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555584ec6d00 brk(0x555584ee7d00) = 0x555584ee7d00 brk(0x555584ee8000) = 0x555584ee8000 mprotect(0x7f7359970000, 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 5833 attached [pid 5833] set_robust_list(0x555584ec6660, 24 [pid 5832] <... clone resumed>, child_tidptr=0x555584ec6650) = 5833 [pid 5833] <... set_robust_list resumed>) = 0 [pid 5833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5833] getppid() = 0 [pid 5833] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5833] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5833] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5833] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5833] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5833] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5833] unshare(CLONE_NEWNS) = 0 [pid 5833] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5833] unshare(CLONE_NEWIPC) = 0 [pid 5833] unshare(CLONE_NEWCGROUP) = 0 [pid 5833] unshare(CLONE_NEWUTS) = 0 [pid 5833] unshare(CLONE_SYSVSEM) = 0 [pid 5833] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "16777216", 8) = 8 [pid 5833] close(3) = 0 [pid 5833] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "536870912", 9) = 9 [pid 5833] close(3) = 0 [pid 5833] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "1024", 4) = 4 [pid 5833] close(3) = 0 [pid 5833] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "8192", 4) = 4 [pid 5833] close(3) = 0 [pid 5833] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "1024", 4) = 4 [pid 5833] close(3) = 0 [pid 5833] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "1024", 4) = 4 [pid 5833] close(3) = 0 [pid 5833] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5833] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5833] close(3) = 0 [pid 5833] getpid() = 1 [pid 5833] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< c3 cc cc cc cc 90 e8 1d f1 f2 f8 85 c0 74 22 83 3d 96 a3 4e 04 [ 210.041051][ C1] RSP: 0018:ffffc90000a18c18 EFLAGS: 00000046 [ 210.041075][ C1] RAX: 0000000000000000 RBX: ffff888034d9a908 RCX: ffff888034d99e00 [ 210.041086][ C1] RDX: ffff888034d99e00 RSI: ffff88807c639300 RDI: ffff888034d9a908 [ 210.041098][ C1] RBP: 0000000000000000 R08: ffffffff89ce265b R09: fffff5200014317c [ 210.041109][ C1] R10: dffffc0000000000 R11: fffff5200014317c R12: 0000000000000046 [ 210.041120][ C1] R13: ffff888034d99e00 R14: 00000000ffffffff R15: ffff88807c639300 [ 210.041132][ C1] FS: 0000555584ec6380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 210.041146][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 210.041157][ C1] CR2: 0000000020001488 CR3: 0000000029340000 CR4: 00000000003526f0 [ 210.041170][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 210.041179][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 210.041189][ C1] Call Trace: [ 210.041196][ C1] [ 210.041208][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 210.041252][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 210.041273][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 210.041300][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 210.041315][ C1] ? nmi_handle+0x14f/0x5a0 [ 210.041334][ C1] ? nmi_handle+0x2a/0x5a0 [ 210.041352][ C1] ? match_held_lock+0x77/0xb0 [ 210.041367][ C1] ? default_do_nmi+0x63/0x160 [ 210.041389][ C1] ? exc_nmi+0x123/0x1f0 [ 210.041409][ C1] ? end_repeat_nmi+0xf/0x53 [ 210.041430][ C1] ? advance_sched+0x1ab/0xca0 [ 210.041450][ C1] ? match_held_lock+0x77/0xb0 [ 210.041467][ C1] ? match_held_lock+0x77/0xb0 [ 210.041483][ C1] ? match_held_lock+0x77/0xb0 [ 210.041499][ C1] [ 210.041504][ C1] [ 210.041510][ C1] lock_is_held_type+0xa9/0x190 [ 210.041527][ C1] ? __pfx_advance_sched+0x10/0x10 [ 210.041545][ C1] advance_sched+0x1c2/0xca0 [ 210.041565][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 210.041580][ C1] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 210.041598][ C1] ? __pfx_advance_sched+0x10/0x10 [ 210.041616][ C1] __hrtimer_run_queues+0x59b/0xd30 [ 210.041643][ C1] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 210.041664][ C1] ? read_tsc+0x9/0x20 [ 210.041677][ C1] ? ktime_get_update_offsets_now+0x393/0x3b0 [ 210.041697][ C1] hrtimer_interrupt+0x403/0xa40 [ 210.041725][ C1] __sysvec_apic_timer_interrupt+0x110/0x420 [ 210.041744][ C1] sysvec_apic_timer_interrupt+0xa1/0xc0 [ 210.041761][ C1] [ 210.041766][ C1] [ 210.041771][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 210.041791][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 [ 210.041807][ C1] Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 4e 4f 37 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 43 f5 9e f5 65 8b 05 e4 48 35 74 85 c0 74 43 48 c7 04 24 0e 36 [ 210.041820][ C1] RSP: 0018:ffffc9000410ede0 EFLAGS: 00000206 [ 210.041833][ C1] RAX: efc6c3f82bf57400 RBX: 1ffff92000821dc0 RCX: ffffffff817b274a [ 210.041845][ C1] RDX: dffffc0000000000 RSI: ffffffff8c0a98e0 RDI: 0000000000000001 [ 210.041856][ C1] RBP: ffffc9000410ee70 R08: ffffffff942bd977 R09: 1ffffffff2857b2e [ 210.041867][ C1] R10: dffffc0000000000 R11: fffffbfff2857b2f R12: dffffc0000000000 [ 210.041879][ C1] R13: 1ffff92000821dbc R14: ffffc9000410ee00 R15: 0000000000000246 [ 210.041893][ C1] ? mark_lock+0x9a/0x360 [ 210.041913][ C1] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 210.041932][ C1] taprio_change+0x351b/0x44f0 [ 210.041956][ C1] ? __pfx_taprio_change+0x10/0x10 [ 210.041973][ C1] ? __pfx_lock_release+0x10/0x10 [ 210.041989][ C1] ? __pfx_do_sync_core+0x10/0x10 [ 210.042010][ C1] ? __pfx_do_sync_core+0x10/0x10 [ 210.042038][ C1] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 210.042070][ C1] taprio_init+0x9da/0xc80 [ 210.042091][ C1] ? __pfx_taprio_init+0x10/0x10 [ 210.042109][ C1] ? lockdep_rtnl_is_held+0x26/0x40 [ 210.042125][ C1] ? qdisc_lookup+0x350/0x6b0 [ 210.042146][ C1] ? __pfx_taprio_init+0x10/0x10 [ 210.042162][ C1] qdisc_create+0x9d4/0x11a0 [ 210.042180][ C1] ? __pfx_qdisc_create+0x10/0x10 [ 210.042197][ C1] tc_modify_qdisc+0xa26/0x1e40 [ 210.042225][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 210.042254][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 210.042276][ C1] rtnetlink_rcv_msg+0x73f/0xcf0 [ 210.042296][ C1] ? rtnetlink_rcv_msg+0x1a7/0xcf0 [ 210.042318][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 210.042340][ C1] ? ref_tracker_free+0x643/0x7e0 [ 210.042362][ C1] netlink_rcv_skb+0x1e3/0x430 [ 210.042380][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 210.042401][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 210.042424][ C1] ? netlink_deliver_tap+0x2e/0x1b0 [ 210.042442][ C1] netlink_unicast+0x7f6/0x990 [ 210.042460][ C1] ? __pfx_netlink_unicast+0x10/0x10 [ 210.042474][ C1] ? __virt_addr_valid+0x45f/0x530 [ 210.042492][ C1] ? __phys_addr_symbol+0x2f/0x70 [ 210.042510][ C1] ? __check_object_size+0x47a/0x730 [ 210.042530][ C1] netlink_sendmsg+0x8e4/0xcb0 [ 210.042551][ C1] ? __pfx_netlink_sendmsg+0x10/0x10 [ 210.042570][ C1] ? aa_sock_msg_perm+0x91/0x160 [ 210.042587][ C1] ? __pfx_netlink_sendmsg+0x10/0x10 [ 210.042604][ C1] __sock_sendmsg+0x221/0x270 [ 210.042627][ C1] ____sys_sendmsg+0x52a/0x7e0 [ 210.042649][ C1] ? __pfx_____sys_sendmsg+0x10/0x10 [ 210.042669][ C1] ? do_raw_spin_lock+0x14f/0x370 [ 210.042685][ C1] __sys_sendmsg+0x269/0x350 [ 210.042705][ C1] ? __pfx___sys_sendmsg+0x10/0x10 [ 210.042727][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 210.042748][ C1] ? _raw_spin_unlock_irq+0x2e/0x50 [ 210.042762][ C1] ? ptrace_notify+0x279/0x380 [ 210.042788][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 210.042805][ C1] ? exc_page_fault+0x590/0x8b0 [ 210.042824][ C1] do_syscall_64+0xf3/0x230 [ 210.042841][ C1] ? clear_bhb_loop+0x35/0x90 [ 210.042861][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 210.042880][ C1] RIP: 0033:0x7f73598f81e9 [ 210.042904][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1a 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 [ 210.042917][ C1] RSP: 002b:00007fff09e42878 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 210.042932][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f73598f81e9 [ 210.042942][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 210.042952][ C1] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000001 [ 210.042961][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff09e428d0 [ 210.042971][ C1] R13: 00007f73599453fe R14: 0000000000000003 R15: 00007fff09e428b0 [ 210.042986][ C1] [ 210.042998][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.071 msecs [ 210.043916][ C0] rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g8769 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 210.762922][ C0] rcu: Possible timer handling issue on cpu=1 timer-softirq=3276 [ 210.770735][ C0] rcu: rcu_preempt kthread starved for 10506 jiffies! g8769 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 210.782025][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 210.791995][ C0] rcu: RCU grace-period kthread stack dump: [ 210.797899][ C0] task:rcu_preempt state:I stack:26264 pid:17 tgid:17 ppid:2 flags:0x00004000 [ 210.808107][ C0] Call Trace: [ 210.811395][ C0] [ 210.814334][ C0] __schedule+0x1850/0x4c30 [ 210.818874][ C0] ? __pfx___schedule+0x10/0x10 [ 210.823737][ C0] ? __pfx_lock_release+0x10/0x10 [ 210.828784][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 210.835124][ C0] ? schedule+0x90/0x320 [ 210.839374][ C0] schedule+0x14b/0x320 [ 210.843542][ C0] schedule_timeout+0x15a/0x290 [ 210.848407][ C0] ? __pfx_schedule_timeout+0x10/0x10 [ 210.853797][ C0] ? __pfx_process_timeout+0x10/0x10 [ 210.859107][ C0] ? prepare_to_swait_event+0x330/0x350 [ 210.864671][ C0] rcu_gp_fqs_loop+0x2df/0x1330 [ 210.869541][ C0] ? lockdep_hardirqs_on+0x99/0x150 [ 210.874753][ C0] ? rcu_gp_init+0x1256/0x1630 [ 210.879537][ C0] ? __pfx_rcu_gp_init+0x10/0x10 [ 210.884574][ C0] ? __pfx_rcu_gp_fqs_loop+0x10/0x10 [ 210.890137][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 210.896042][ C0] ? finish_swait+0xd4/0x1e0 [ 210.900643][ C0] rcu_gp_kthread+0xa7/0x3b0 [ 210.905252][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 210.910458][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 210.916365][ C0] ? __kthread_parkme+0x169/0x1d0 [ 210.921424][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 210.926653][ C0] kthread+0x2f0/0x390 [ 210.930748][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 210.935963][ C0] ? __pfx_kthread+0x10/0x10 [ 210.940572][ C0] ret_from_fork+0x4b/0x80 [ 210.944998][ C0] ? __pfx_kthread+0x10/0x10 [ 210.949602][ C0] ret_from_fork_asm+0x1a/0x30 [ 210.954388][ C0]