./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1059843531 <...> Warning: Permanently added '10.128.1.42' (ED25519) to the list of known hosts. execve("./syz-executor1059843531", ["./syz-executor1059843531"], 0x7fff29b284c0 /* 10 vars */) = 0 brk(NULL) = 0x555555a4d000 brk(0x555555a4dd00) = 0x555555a4dd00 arch_prctl(ARCH_SET_FS, 0x555555a4d380) = 0 set_tid_address(0x555555a4d650) = 5066 set_robust_list(0x555555a4d660, 24) = 0 rseq(0x555555a4dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1059843531", 4096) = 28 getrandom("\x24\x4f\x1c\x2b\x38\xc7\x75\x56", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555a4dd00 brk(0x555555a6ed00) = 0x555555a6ed00 brk(0x555555a6f000) = 0x555555a6f000 mprotect(0x7f217c791000, 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 5067 attached , child_tidptr=0x555555a4d650) = 5067 [pid 5067] set_robust_list(0x555555a4d660, 24) = 0 [pid 5067] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setsid() = 1 [pid 5067] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5067] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5067] unshare(CLONE_NEWNS) = 0 [pid 5067] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5067] unshare(CLONE_NEWIPC) = 0 [pid 5067] unshare(CLONE_NEWCGROUP) = 0 [pid 5067] unshare(CLONE_NEWUTS) = 0 [pid 5067] unshare(CLONE_SYSVSEM) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "16777216", 8) = 8 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "536870912", 9) = 9 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "8192", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5067] close(3) = 0 [pid 5067] getpid() = 1 [pid 5067] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5067] kill(-2, SIGKILL) = 0 [pid 5067] kill(2, SIGKILL) = 0 [pid 5067] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5067] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5067] getdents64(3, 0x555555a4e6f0 /* 2 entries */, 32768) = 48 [pid 5067] getdents64(3, 0x555555a4e6f0 /* 0 entries */, 32768) = 0 [pid 5067] close(3) = 0 [ 76.899142][ T27] cfg80211: failed to load regulatory.db [ 131.295521][ T5074] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2687 jiffies s: 553 root: 0x1/. [ 131.308128][ T5074] rcu: blocking rcu_node structures (internal RCU debug): [ 131.315573][ T5074] Sending NMI from CPU 1 to CPUs 0: [ 131.320797][ C0] NMI backtrace for cpu 0 [ 131.320808][ C0] CPU: 0 PID: 5076 Comm: syz-executor105 Not tainted 6.8.0-rc4-syzkaller-00005-gc664e16bb1ba #0 [ 131.320824][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 131.320834][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 [ 131.320881][ C0] Code: 8b 3d a4 a5 1a 0c 48 89 de 5b e9 33 cc 56 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d b0 52 70 7e 65 8b 15 b1 52 70 7e f7 c2 00 01 ff 00 74 [ 131.320894][ C0] RSP: 0018:ffffc90000007d58 EFLAGS: 00000046 [ 131.320908][ C0] RAX: ffffffff8181d3ac RBX: 1ffff11005817155 RCX: ffffc90000007b03 [ 131.320919][ C0] RDX: 0000000000000002 RSI: ffffffff8baac760 RDI: ffffffff8bfe6820 [ 131.320930][ C0] RBP: ffffc90000007ea8 R08: ffffffff8f855a6f R09: 1ffffffff1f0ab4d [ 131.320941][ C0] R10: dffffc0000000000 R11: fffffbfff1f0ab4e R12: 1ffff1101728575b [ 131.320952][ C0] R13: 0000000000000001 R14: ffff88802b5cf340 R15: ffff88802c0b8aa8 [ 131.320962][ C0] FS: 0000555555a4d380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 131.320975][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 131.320985][ C0] CR2: 00007f217c7950f0 CR3: 000000002ea70000 CR4: 00000000003506f0 [ 131.320998][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 131.321007][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 131.321016][ C0] Call Trace: [ 131.321021][ C0] [ 131.321027][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 131.321047][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 131.321070][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 131.321084][ C0] ? nmi_handle+0x2a/0x580 [ 131.321107][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 131.321124][ C0] ? nmi_handle+0x14f/0x580 [ 131.321137][ C0] ? nmi_handle+0x2a/0x580 [ 131.321152][ C0] ? __sanitizer_cov_trace_pc+0x8/0x70 [ 131.321171][ C0] ? default_do_nmi+0x63/0x160 [ 131.321187][ C0] ? exc_nmi+0x121/0x210 [ 131.321201][ C0] ? end_repeat_nmi+0xf/0x60 [ 131.321227][ C0] ? __hrtimer_run_queues+0x5bc/0xd00 [ 131.321244][ C0] ? __sanitizer_cov_trace_pc+0x8/0x70 [ 131.321264][ C0] ? __sanitizer_cov_trace_pc+0x8/0x70 [ 131.321286][ C0] ? __sanitizer_cov_trace_pc+0x8/0x70 [ 131.321306][ C0] [ 131.321310][ C0] [ 131.321314][ C0] __hrtimer_run_queues+0x5bc/0xd00 [ 131.321339][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 131.321355][ C0] ? ktime_get_update_offsets_now+0x411/0x430 [ 131.321379][ C0] hrtimer_interrupt+0x396/0x990 [ 131.321406][ C0] __sysvec_apic_timer_interrupt+0x107/0x3a0 [ 131.321429][ C0] sysvec_apic_timer_interrupt+0x92/0xb0 [ 131.321447][ C0] [ 131.321451][ C0] [ 131.321456][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 131.321478][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 [ 131.321498][ C0] Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 4e 4a 84 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 33 0d f3 f5 65 8b 05 84 7f 92 74 85 c0 74 43 48 c7 04 24 0e 36 [ 131.321509][ C0] RSP: 0018:ffffc90003d1ea60 EFLAGS: 00000206 [ 131.321521][ C0] RAX: 6297e5864c5f6300 RBX: 1ffff920007a3d50 RCX: ffffffff8171882a [ 131.321533][ C0] RDX: dffffc0000000000 RSI: ffffffff8baab5e0 RDI: 0000000000000001 [ 131.321543][ C0] RBP: ffffc90003d1eaf0 R08: ffffffff92c8a4e7 R09: 1ffffffff259149c [ 131.321554][ C0] R10: dffffc0000000000 R11: fffffbfff259149d R12: dffffc0000000000 [ 131.321565][ C0] R13: 1ffff920007a3d4c R14: ffffc90003d1ea80 R15: 0000000000000246 [ 131.321580][ C0] ? mark_lock+0x9a/0x350 [ 131.321597][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 131.321622][ C0] taprio_change+0x4912/0x57d0 [ 131.321656][ C0] ? __pfx_taprio_change+0x10/0x10 [ 131.321674][ C0] ? __pfx___might_resched+0x10/0x10 [ 131.321690][ C0] ? static_key_slow_inc_cpuslocked+0xdd/0x150 [ 131.321710][ C0] ? __pfx_lock_release+0x10/0x10 [ 131.321730][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 131.321747][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 131.321763][ C0] ? on_each_cpu_cond_mask+0x62/0x80 [ 131.321805][ C0] taprio_init+0x9da/0xc80 [ 131.321818][ C0] ? ____sys_sendmsg+0x525/0x7d0 [ 131.321834][ C0] ? __sys_sendmsg+0x2b0/0x3a0 [ 131.321854][ C0] ? do_syscall_64+0xf9/0x240 [ 131.321880][ C0] ? __pfx_taprio_init+0x10/0x10 [ 131.321896][ C0] ? lockdep_rtnl_is_held+0x26/0x40 [ 131.321918][ C0] ? qdisc_lookup+0x350/0x6b0 [ 131.321936][ C0] ? __pfx_taprio_init+0x10/0x10 [ 131.321950][ C0] qdisc_create+0x9d4/0x1190 [ 131.321975][ C0] ? __pfx_qdisc_create+0x10/0x10 [ 131.321999][ C0] tc_modify_qdisc+0xa26/0x1e40 [ 131.322027][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 131.322061][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 131.322080][ C0] rtnetlink_rcv_msg+0x885/0x1040 [ 131.322102][ C0] ? rtnetlink_rcv_msg+0x208/0x1040 [ 131.322123][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 131.322147][ C0] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 131.322170][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 131.322194][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 131.322217][ C0] ? lockdep_hardirqs_on+0x98/0x140 [ 131.322236][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 131.322258][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 131.322275][ C0] ? __pfx___local_bh_enable_ip+0x10/0x10 [ 131.322300][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 131.322318][ C0] ? __dev_queue_xmit+0x15fd/0x3b10 [ 131.322341][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 131.322363][ C0] ? ref_tracker_free+0x643/0x7e0 [ 131.322387][ C0] netlink_rcv_skb+0x1e3/0x430 [ 131.322409][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 131.322430][ C0] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 131.322464][ C0] ? netlink_deliver_tap+0x2e/0x1b0 [ 131.322488][ C0] netlink_unicast+0x7ea/0x980 [ 131.322514][ C0] ? __pfx_netlink_unicast+0x10/0x10 [ 131.322533][ C0] ? __virt_addr_valid+0x44e/0x520 [ 131.322554][ C0] ? __phys_addr_symbol+0x2f/0x70 [ 131.322574][ C0] ? __check_object_size+0x4bb/0xa00 [ 131.322592][ C0] ? bpf_lsm_netlink_send+0x9/0x10 [ 131.322611][ C0] netlink_sendmsg+0xa3b/0xd70 [ 131.322632][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 131.322647][ C0] ? __import_iovec+0x552/0x890 [ 131.322668][ C0] ? aa_sock_msg_perm+0x91/0x160 [ 131.322691][ C0] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 131.322711][ C0] ? security_socket_sendmsg+0x87/0xb0 [ 131.322730][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 131.322743][ C0] __sock_sendmsg+0x221/0x270 [ 131.322766][ C0] ____sys_sendmsg+0x525/0x7d0 [ 131.322788][ C0] ? __pfx_____sys_sendmsg+0x10/0x10 [ 131.322808][ C0] ? do_raw_spin_lock+0x14e/0x370 [ 131.322831][ C0] __sys_sendmsg+0x2b0/0x3a0 [ 131.322854][ C0] ? __pfx___sys_sendmsg+0x10/0x10 [ 131.322878][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 131.322906][ C0] ? _raw_spin_unlock_irq+0x2e/0x50 [ 131.322923][ C0] ? ptrace_notify+0x278/0x380 [ 131.322950][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 131.322973][ C0] ? do_syscall_64+0x108/0x240 [ 131.322994][ C0] ? syscall_trace_enter+0x5e/0x150 [ 131.323018][ C0] do_syscall_64+0xf9/0x240 [ 131.323039][ C0] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 131.323060][ C0] RIP: 0033:0x7f217c718ba9 [ 131.323073][ 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 [ 131.323085][ C0] RSP: 002b:00007ffdcc673e48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 131.323099][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f217c718ba9 [ 131.323109][ C0] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 131.323118][ C0] RBP: 0000000000000000 R08: 0000000100000000 R09: 0000000100000000 [ 131.323128][ C0] R10: 0000000100000000 R11: 0000000000000246 R12: 00007ffdcc673ea0 [ 131.323137][ C0] R13: 0000000000000001 R14: 00007ffdcc673ea0 R15: 0000000000000003 [ 131.323154][ C0] [ 131.323161][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.363 msecs