./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor45830912 <...> Warning: Permanently added '10.128.10.32' (ED25519) to the list of known hosts. execve("./syz-executor45830912", ["./syz-executor45830912"], 0x7ffccbf29900 /* 10 vars */) = 0 brk(NULL) = 0x555556030000 brk(0x555556030d00) = 0x555556030d00 arch_prctl(ARCH_SET_FS, 0x555556030380) = 0 set_tid_address(0x555556030650) = 5063 set_robust_list(0x555556030660, 24) = 0 rseq(0x555556030ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor45830912", 4096) = 26 getrandom("\x75\xf2\x9a\x85\x93\x56\x05\x0b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556030d00 brk(0x555556051d00) = 0x555556051d00 brk(0x555556052000) = 0x555556052000 mprotect(0x7f1adf842000, 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=0x555556030650) = 5064 ./strace-static-x86_64: Process 5064 attached [pid 5064] set_robust_list(0x555556030660, 24) = 0 [pid 5064] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5064] setsid() = 1 [pid 5064] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5064] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5064] unshare(CLONE_NEWNS) = 0 [pid 5064] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5064] unshare(CLONE_NEWIPC) = 0 [pid 5064] unshare(CLONE_NEWCGROUP) = 0 [pid 5064] unshare(CLONE_NEWUTS) = 0 [pid 5064] unshare(CLONE_SYSVSEM) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "16777216", 8) = 8 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "536870912", 9) = 9 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "8192", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024", 4) = 4 [pid 5064] close(3) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5064] close(3) = 0 [pid 5064] getpid() = 1 [pid 5064] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5074] set_robust_list(0x555556030660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555556030650) = 2 [pid 5074] <... set_robust_list resumed>) = 0 [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] setpgid(0, 0) = 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5074] write(3, "1000", 4) = 4 [pid 5074] close(3) = 0 [pid 5074] socket(AF_PACKET, SOCK_RAW, htons(0 /* ETH_P_??? */)) = 3 [pid 5074] ioctl(3, SIOCGIFINDEX, {ifr_name="team0", ifr_ifindex=15}) = 0 [pid 5074] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 5074] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\xa4\x00\x00\x00\x24\x00\x0b\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x12\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x0b\x00\x01\x00\x74\x61\x70\x72\x69\x6f\x00\x00\x74\x00\x02\x00\x56\x00\x01\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=164}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 5064] kill(-2, SIGKILL) = 0 [pid 5064] kill(2, SIGKILL) = 0 [ 119.763505][ T27] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2634 jiffies s: 545 root: 0x1/. [ 119.775743][ T27] rcu: blocking rcu_node structures (internal RCU debug): [ 119.782876][ T27] Sending NMI from CPU 1 to CPUs 0: [ 119.788133][ C0] NMI backtrace for cpu 0 [ 119.788143][ C0] CPU: 0 PID: 5074 Comm: syz-executor458 Not tainted 6.8.0-rc3-syzkaller-00862-g0f37666d87d2 #0 [ 119.788160][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 119.788168][ C0] RIP: 0010:kasan_check_range+0x70/0x290 [ 119.788203][ C0] Code: ff df 4e 8d 1c 13 49 ff c8 4d 89 c1 49 c1 e9 03 49 be 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 <48> 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 [ 119.788215][ C0] RSP: 0018:ffffc90000007778 EFLAGS: 00000083 [ 119.788228][ C0] RAX: 0000000000000001 RBX: 1ffffffff2592484 RCX: ffffffff8171840a [ 119.788239][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92c92420 [ 119.788248][ C0] RBP: 0000000000000001 R08: ffffffff92c92427 R09: 1ffffffff2592484 [ 119.788258][ C0] R10: dffffc0000000000 R11: fffffbfff2592484 R12: 0000000000000001 [ 119.788268][ C0] R13: dffffc0000000000 R14: dffffc0000000001 R15: fffffbfff2592485 [ 119.788279][ C0] FS: 0000555556030380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 119.788292][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 119.788302][ C0] CR2: 00007f1adf8173b0 CR3: 000000001cf78000 CR4: 00000000003506f0 [ 119.788315][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 119.788323][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 119.788332][ C0] Call Trace: [ 119.788338][ C0] [ 119.788343][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 119.788366][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 119.788387][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 119.788411][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 119.788428][ C0] ? nmi_handle+0x14f/0x580 [ 119.788442][ C0] ? nmi_handle+0x2a/0x580 [ 119.788455][ C0] ? kasan_check_range+0x70/0x290 [ 119.788470][ C0] ? default_do_nmi+0x63/0x160 [ 119.788491][ C0] ? exc_nmi+0x121/0x210 [ 119.788508][ C0] ? end_repeat_nmi+0xf/0x60 [ 119.788527][ C0] ? mark_lock+0x9a/0x350 [ 119.788541][ C0] ? kasan_check_range+0x70/0x290 [ 119.788555][ C0] ? kasan_check_range+0x70/0x290 [ 119.788571][ C0] ? kasan_check_range+0x70/0x290 [ 119.788585][ C0] [ 119.788590][ C0] [ 119.788595][ C0] mark_lock+0x9a/0x350 [ 119.788610][ C0] __lock_acquire+0xc09/0x1fd0 [ 119.788636][ C0] lock_acquire+0x1e3/0x530 [ 119.788654][ C0] ? debug_objects_fill_pool+0x80/0x9b0 [ 119.788676][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 119.788694][ C0] ? __lock_acquire+0x1345/0x1fd0 [ 119.788718][ C0] ? debug_objects_fill_pool+0x80/0x9b0 [ 119.788737][ C0] debug_objects_fill_pool+0x9f/0x9b0 [ 119.788755][ C0] ? debug_objects_fill_pool+0x80/0x9b0 [ 119.788774][ C0] ? __lock_acquire+0x1345/0x1fd0 [ 119.788796][ C0] ? __pfx_debug_objects_fill_pool+0x10/0x10 [ 119.788819][ C0] ? advance_sched+0xa02/0xca0 [ 119.788845][ C0] debug_object_activate+0x135/0x510 [ 119.788865][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 119.788883][ C0] ? __pfx_debug_object_activate+0x10/0x10 [ 119.788900][ C0] ? advance_sched+0xa02/0xca0 [ 119.788920][ C0] ? _raw_spin_lock_irq+0xdf/0x120 [ 119.788939][ C0] ? __pfx__raw_spin_lock_irq+0x10/0x10 [ 119.788961][ C0] enqueue_hrtimer+0x30/0x320 [ 119.788978][ C0] __hrtimer_run_queues+0x6b4/0xd00 [ 119.788999][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 119.789013][ C0] ? ktime_get_update_offsets_now+0x411/0x430 [ 119.789035][ C0] hrtimer_interrupt+0x396/0x990 [ 119.789058][ C0] __sysvec_apic_timer_interrupt+0x107/0x3a0 [ 119.789077][ C0] sysvec_apic_timer_interrupt+0x92/0xb0 [ 119.789098][ C0] [ 119.789102][ C0] [ 119.789107][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 119.789123][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 [ 119.789137][ C0] Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 1e 8f 83 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 c3 fa f1 f5 65 8b 05 34 71 91 74 85 c0 74 43 48 c7 04 24 0e 36 [ 119.789148][ C0] RSP: 0018:ffffc90003b3eb40 EFLAGS: 00000206 [ 119.789160][ C0] RAX: 633745a029aa1400 RBX: 1ffff92000767d6c RCX: ffffffff8171840a [ 119.789170][ C0] RDX: dffffc0000000000 RSI: ffffffff8baab5e0 RDI: 0000000000000001 [ 119.789180][ C0] RBP: ffffc90003b3ebd0 R08: ffffffff92c924e7 R09: 1ffffffff259249c [ 119.789190][ C0] R10: dffffc0000000000 R11: fffffbfff259249d R12: dffffc0000000000 [ 119.789201][ C0] R13: 1ffff92000767d68 R14: ffffc90003b3eb60 R15: 0000000000000246 [ 119.789214][ C0] ? mark_lock+0x9a/0x350 [ 119.789231][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 119.789255][ C0] taprio_change+0x339b/0x42d0 [ 119.789280][ C0] ? __pfx_taprio_change+0x10/0x10 [ 119.789295][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 119.789311][ C0] ? __pfx_do_sync_core+0x10/0x10 [ 119.789325][ C0] ? on_each_cpu_cond_mask+0x62/0x80 [ 119.789354][ C0] ? __pfx_rcu_read_lock_any_held+0x10/0x10 [ 119.789380][ C0] taprio_init+0x9da/0xc80 [ 119.789396][ C0] ? ____sys_sendmsg+0x525/0x7d0 [ 119.789414][ C0] ? __sys_sendmsg+0x2b0/0x3a0 [ 119.789431][ C0] ? do_syscall_64+0xf9/0x240 [ 119.789451][ C0] ? __pfx_taprio_init+0x10/0x10 [ 119.789468][ C0] ? lockdep_rtnl_is_held+0x26/0x40 [ 119.789484][ C0] ? qdisc_lookup+0x350/0x6b0 [ 119.789508][ C0] ? __pfx_taprio_init+0x10/0x10 [ 119.789524][ C0] qdisc_create+0x9d4/0x1190 [ 119.789543][ C0] ? __pfx_qdisc_create+0x10/0x10 [ 119.789561][ C0] tc_modify_qdisc+0xa26/0x1e40 [ 119.789582][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 119.789606][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 119.789620][ C0] rtnetlink_rcv_msg+0x885/0x1040 [ 119.789637][ C0] ? rtnetlink_rcv_msg+0x208/0x1040 [ 119.789652][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 119.789669][ C0] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 119.789690][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 119.789712][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 119.789732][ C0] ? lockdep_hardirqs_on+0x98/0x140 [ 119.789746][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 119.789765][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 119.789784][ C0] ? __pfx___local_bh_enable_ip+0x10/0x10 [ 119.789806][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 119.789824][ C0] ? __dev_queue_xmit+0x15fd/0x3b10 [ 119.789848][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 119.789870][ C0] ? ref_tracker_free+0x643/0x7e0 [ 119.789891][ C0] netlink_rcv_skb+0x1e3/0x430 [ 119.789909][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 119.789924][ C0] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 119.789949][ C0] ? netlink_deliver_tap+0x2e/0x1b0 [ 119.789967][ C0] netlink_unicast+0x7ea/0x980 [ 119.789985][ C0] ? __pfx_netlink_unicast+0x10/0x10 [ 119.789999][ C0] ? __virt_addr_valid+0x44e/0x520 [ 119.790018][ C0] ? __phys_addr_symbol+0x2f/0x70 [ 119.790035][ C0] ? __check_object_size+0x4bb/0xa00 [ 119.790052][ C0] ? bpf_lsm_netlink_send+0x9/0x10 [ 119.790071][ C0] netlink_sendmsg+0xa3b/0xd70 [ 119.790092][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 119.790109][ C0] ? __import_iovec+0x552/0x890 [ 119.790122][ C0] ? aa_sock_msg_perm+0x91/0x160 [ 119.790137][ C0] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 119.790155][ C0] ? security_socket_sendmsg+0x87/0xb0 [ 119.790174][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 119.790189][ C0] __sock_sendmsg+0x221/0x270 [ 119.790207][ C0] ____sys_sendmsg+0x525/0x7d0 [ 119.790229][ C0] ? __pfx_____sys_sendmsg+0x10/0x10 [ 119.790248][ C0] ? do_raw_spin_lock+0x14e/0x370 [ 119.790269][ C0] __sys_sendmsg+0x2b0/0x3a0 [ 119.790288][ C0] ? __pfx___sys_sendmsg+0x10/0x10 [ 119.790310][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 119.790334][ C0] ? _raw_spin_unlock_irq+0x2e/0x50 [ 119.790347][ C0] ? ptrace_notify+0x278/0x380 [ 119.790369][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 119.790389][ C0] ? do_syscall_64+0x108/0x240 [ 119.790405][ C0] ? syscall_trace_enter+0x5e/0x150 [ 119.790425][ C0] do_syscall_64+0xf9/0x240 [ 119.790441][ C0] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 119.790456][ C0] RIP: 0033:0x7f1adf7c9de9 [ 119.790469][ 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 [ 119.790480][ C0] RSP: 002b:00007ffd229d3658 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 119.790498][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1adf7c9de9 [ 119.790507][ C0] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 119.790516][ C0] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000100000000 [ 119.790525][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd229d36b0 [ 119.790534][ C0] R13: 0000000000000001 R14: 00007ffd229d36b0 R15: 0000000000000003 [ 119.790549][ C0] [ 119.790555][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.422 msecs