./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1694262214 <...> Warning: Permanently added '10.128.10.26' (ED25519) to the list of known hosts. execve("./syz-executor1694262214", ["./syz-executor1694262214"], 0x7ffd0f9b6d20 /* 10 vars */) = 0 brk(NULL) = 0x555555d7e000 brk(0x555555d7ed00) = 0x555555d7ed00 arch_prctl(ARCH_SET_FS, 0x555555d7e380) = 0 set_tid_address(0x555555d7e650) = 5070 set_robust_list(0x555555d7e660, 24) = 0 rseq(0x555555d7eca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1694262214", 4096) = 28 getrandom("\x2e\xb8\xbf\x5a\x96\xb0\x42\xba", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555d7ed00 brk(0x555555d9fd00) = 0x555555d9fd00 brk(0x555555da0000) = 0x555555da0000 mprotect(0x7f928fd65000, 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=0x555555d7e650) = 5071 ./strace-static-x86_64: Process 5071 attached [pid 5071] set_robust_list(0x555555d7e660, 24) = 0 [pid 5071] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5071] setsid() = 1 [pid 5071] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5071] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5071] unshare(CLONE_NEWNS) = 0 [pid 5071] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5071] unshare(CLONE_NEWIPC) = 0 [pid 5071] unshare(CLONE_NEWCGROUP) = 0 [pid 5071] unshare(CLONE_NEWUTS) = 0 [pid 5071] unshare(CLONE_SYSVSEM) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "16777216", 8) = 8 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "536870912", 9) = 9 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "8192", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024", 4) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5071] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5071] close(3) = 0 [pid 5071] getpid() = 1 [pid 5071] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5071] kill(-2, SIGKILL) = 0 [pid 5071] kill(2, SIGKILL) = 0 [ 147.317585][ T1784] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2690 jiffies s: 541 root: 0x1/. [ 147.331477][ T1784] rcu: blocking rcu_node structures (internal RCU debug): [ 147.339057][ T1784] Sending NMI from CPU 1 to CPUs 0: [ 147.344303][ C0] NMI backtrace for cpu 0 [ 147.344315][ C0] CPU: 0 PID: 5082 Comm: syz-executor169 Not tainted 6.8.0-rc4-syzkaller-00262-g359e54a93ab4 #0 [ 147.344332][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 147.344342][ C0] RIP: 0010:kasan_check_range+0x60/0x290 [ 147.344393][ C0] Code: 00 48 89 fb 48 c1 eb 03 49 ba 00 00 00 00 00 fc 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 [ 147.344406][ C0] RSP: 0018:ffffc90000007bf0 EFLAGS: 00000802 [ 147.344421][ C0] RAX: 0000000000000001 RBX: 1ffff1100fd90a5d RCX: ffffffff81727c28 [ 147.344432][ C0] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88807ec852e8 [ 147.344443][ C0] RBP: 000000000001ffff R08: ffff88807ec852eb R09: 1ffff1100fd90a5d [ 147.344454][ C0] R10: dffffc0000000000 R11: ffffed100fd90a5d R12: dffffc0000000000 [ 147.344466][ C0] R13: ffff88802c0c7808 R14: dffffc0000000001 R15: ffff88807ec852e8 [ 147.344478][ C0] FS: 0000555555d7e380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 147.344492][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 147.344503][ C0] CR2: 0000555555d7e650 CR3: 00000000786b6000 CR4: 00000000003506f0 [ 147.344517][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 147.344526][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 147.344536][ C0] Call Trace: [ 147.344543][ C0] [ 147.344549][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 147.344571][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 147.344598][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 147.344614][ C0] ? nmi_handle+0x2a/0x580 [ 147.344638][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 147.344657][ C0] ? nmi_handle+0x14f/0x580 [ 147.344672][ C0] ? nmi_handle+0x2a/0x580 [ 147.344688][ C0] ? kasan_check_range+0x60/0x290 [ 147.344713][ C0] ? default_do_nmi+0x63/0x160 [ 147.344730][ C0] ? exc_nmi+0x121/0x210 [ 147.344746][ C0] ? end_repeat_nmi+0xf/0x60 [ 147.344765][ C0] ? do_raw_spin_unlock+0x58/0x8b0 [ 147.344787][ C0] ? kasan_check_range+0x60/0x290 [ 147.344813][ C0] ? kasan_check_range+0x60/0x290 [ 147.344839][ C0] ? kasan_check_range+0x60/0x290 [ 147.344865][ C0] [ 147.344870][ C0] [ 147.344876][ C0] do_raw_spin_unlock+0x58/0x8b0 [ 147.344897][ C0] ? taprio_set_budgets+0x32c/0x370 [ 147.344922][ C0] _raw_spin_unlock+0x1e/0x50 [ 147.344943][ C0] advance_sched+0x9b4/0xca0 [ 147.344969][ C0] ? __pfx_advance_sched+0x10/0x10 [ 147.344986][ C0] __hrtimer_run_queues+0x594/0xd00 [ 147.345014][ C0] ? __pfx___hrtimer_run_queues+0x10/0x10 [ 147.345031][ C0] ? ktime_get_update_offsets_now+0x411/0x430 [ 147.345058][ C0] hrtimer_interrupt+0x396/0x990 [ 147.345087][ C0] __sysvec_apic_timer_interrupt+0x107/0x3a0 [ 147.345120][ C0] sysvec_apic_timer_interrupt+0x92/0xb0 [ 147.345142][ C0] [ 147.345146][ C0] [ 147.345151][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 147.345177][ C0] RIP: 0010:rcu_is_watching+0x0/0xb0 [ 147.345201][ C0] Code: 4c 89 f6 e8 32 b5 5e 03 e9 2b ff ff ff e8 08 eb eb 09 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 41 57 41 56 53 65 ff 05 f8 ec 88 7e e8 2b 09 ec 09 89 [ 147.345214][ C0] RSP: 0018:ffffc90003a36ad8 EFLAGS: 00000202 [ 147.345227][ C0] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888023f7d940 [ 147.345237][ C0] RDX: ffff888023f7d940 RSI: 0000000000000001 RDI: 0000000000000000 [ 147.345247][ C0] RBP: 0000000000000000 R08: ffffffff81a1afe3 R09: 1ffffffff2591484 [ 147.345257][ C0] R10: dffffc0000000000 R11: fffffbfff2591485 R12: ffff888023f7d940 [ 147.345269][ C0] R13: dffffc0000000000 R14: 0000000000000000 R15: 00007f928fcecc29 [ 147.345285][ C0] ? is_bpf_text_address+0x1f3/0x2b0 [ 147.345312][ C0] is_bpf_text_address+0x1fc/0x2b0 [ 147.345333][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 147.345354][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 147.345375][ C0] kernel_text_address+0xa7/0xe0 [ 147.345396][ C0] __kernel_text_address+0xd/0x40 [ 147.345416][ C0] unwind_get_return_address+0x5d/0xc0 [ 147.345440][ C0] ? entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 147.345464][ C0] arch_stack_walk+0x124/0x1b0 [ 147.345488][ C0] stack_trace_save+0x117/0x1d0 [ 147.345510][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 147.345533][ C0] ? __pfx___local_bh_enable_ip+0x10/0x10 [ 147.345562][ C0] kasan_save_track+0x3f/0x80 [ 147.345583][ C0] ? kasan_save_track+0x3f/0x80 [ 147.345604][ C0] ? __kasan_slab_alloc+0x66/0x80 [ 147.345627][ C0] ? kmem_cache_alloc_node+0x18f/0x380 [ 147.345644][ C0] ? __alloc_skb+0x181/0x420 [ 147.345660][ C0] ? qdisc_notify+0x11b/0x4b0 [ 147.345682][ C0] ? tc_modify_qdisc+0x1c58/0x1e40 [ 147.345703][ C0] ? rtnetlink_rcv_msg+0x885/0x1040 [ 147.345725][ C0] ? netlink_rcv_skb+0x1e3/0x430 [ 147.345749][ C0] ? netlink_unicast+0x7ea/0x980 [ 147.345770][ C0] ? netlink_sendmsg+0xa3b/0xd70 [ 147.345784][ C0] ? __sock_sendmsg+0x221/0x270 [ 147.345807][ C0] ? ____sys_sendmsg+0x525/0x7d0 [ 147.345824][ C0] ? __sys_sendmsg+0x2b0/0x3a0 [ 147.345842][ C0] ? do_syscall_64+0xf9/0x240 [ 147.345863][ C0] ? entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 147.345911][ C0] __kasan_slab_alloc+0x66/0x80 [ 147.345935][ C0] kmem_cache_alloc_node+0x18f/0x380 [ 147.345954][ C0] ? __alloc_skb+0x181/0x420 [ 147.345972][ C0] __alloc_skb+0x181/0x420 [ 147.345992][ C0] ? __pfx___alloc_skb+0x10/0x10 [ 147.346014][ C0] qdisc_notify+0x11b/0x4b0 [ 147.346042][ C0] tc_modify_qdisc+0x1c58/0x1e40 [ 147.346074][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 147.346230][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 147.346257][ C0] rtnetlink_rcv_msg+0x885/0x1040 [ 147.346285][ C0] ? rtnetlink_rcv_msg+0x208/0x1040 [ 147.346309][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 147.346336][ C0] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 147.346362][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 147.346390][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 147.346415][ C0] ? lockdep_hardirqs_on+0x98/0x140 [ 147.346437][ C0] ? __local_bh_enable_ip+0x168/0x200 [ 147.346463][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 147.346482][ C0] ? __pfx___local_bh_enable_ip+0x10/0x10 [ 147.346511][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 147.346531][ C0] ? __dev_queue_xmit+0x15fd/0x3b10 [ 147.346557][ C0] ? __dev_queue_xmit+0x2c4/0x3b10 [ 147.346582][ C0] ? ref_tracker_free+0x643/0x7e0 [ 147.346615][ C0] netlink_rcv_skb+0x1e3/0x430 [ 147.346642][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 147.346666][ C0] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 147.346705][ C0] ? netlink_deliver_tap+0x2e/0x1b0 [ 147.346732][ C0] netlink_unicast+0x7ea/0x980 [ 147.346761][ C0] ? __pfx_netlink_unicast+0x10/0x10 [ 147.346783][ C0] ? __virt_addr_valid+0x44e/0x520 [ 147.346807][ C0] ? __phys_addr_symbol+0x2f/0x70 [ 147.346829][ C0] ? __check_object_size+0x4bb/0xa00 [ 147.346848][ C0] ? bpf_lsm_netlink_send+0x9/0x10 [ 147.346871][ C0] netlink_sendmsg+0xa3b/0xd70 [ 147.346894][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 147.346911][ C0] ? __import_iovec+0x552/0x890 [ 147.346935][ C0] ? aa_sock_msg_perm+0x91/0x160 [ 147.346962][ C0] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 147.346985][ C0] ? security_socket_sendmsg+0x87/0xb0 [ 147.347007][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 147.347022][ C0] __sock_sendmsg+0x221/0x270 [ 147.347049][ C0] ____sys_sendmsg+0x525/0x7d0 [ 147.347074][ C0] ? __pfx_____sys_sendmsg+0x10/0x10 [ 147.347096][ C0] ? do_raw_spin_lock+0x14e/0x370 [ 147.347123][ C0] __sys_sendmsg+0x2b0/0x3a0 [ 147.347144][ C0] ? __pfx___sys_sendmsg+0x10/0x10 [ 147.347171][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 147.347203][ C0] ? _raw_spin_unlock_irq+0x2e/0x50 [ 147.347224][ C0] ? ptrace_notify+0x278/0x380 [ 147.347255][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 147.347280][ C0] ? do_syscall_64+0x108/0x240 [ 147.347305][ C0] ? syscall_trace_enter+0x5e/0x150 [ 147.347333][ C0] do_syscall_64+0xf9/0x240 [ 147.347360][ C0] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 147.347388][ C0] RIP: 0033:0x7f928fcecc29 [ 147.347405][ 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 [ 147.347419][ C0] RSP: 002b:00007ffd732c00d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 147.347437][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f928fcecc29 [ 147.347449][ C0] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000006 [ 147.347459][ C0] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 147.347470][ C0] R10: 0000000100000000 R11: 0000000000000246 R12: 00007ffd732c0130 [ 147.347482][ C0] R13: 0000000000000001 R14: 00007ffd732c0130 R15: 0000000000000003 [ 147.347501][ C0] [ 147.347508][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.205 msecs