./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3046385946 <...> Warning: Permanently added '10.128.0.66' (ED25519) to the list of known hosts. execve("./syz-executor3046385946", ["./syz-executor3046385946"], 0x7ffcd5872360 /* 10 vars */) = 0 brk(NULL) = 0x555556e5b000 brk(0x555556e5bd00) = 0x555556e5bd00 arch_prctl(ARCH_SET_FS, 0x555556e5b380) = 0 set_tid_address(0x555556e5b650) = 5070 set_robust_list(0x555556e5b660, 24) = 0 rseq(0x555556e5bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3046385946", 4096) = 28 getrandom("\x92\x9d\x13\x5a\xec\x19\x69\xf7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556e5bd00 brk(0x555556e7cd00) = 0x555556e7cd00 brk(0x555556e7d000) = 0x555556e7d000 mprotect(0x7f5bb90fc000, 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 5071 attached [pid 5071] set_robust_list(0x555556e5b660, 24) = 0 [pid 5071] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL [pid 5070] <... clone resumed>, child_tidptr=0x555556e5b650) = 5071 [pid 5071] <... mount resumed>) = -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 [ 188.129404][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 188.136497][ C0] rcu: 1-...0: (1 ticks this GP) idle=ffa4/1/0x4000000000000000 softirq=6955/6955 fqs=5249 [ 188.147564][ C0] rcu: hardirqs softirqs csw/system [ 188.153989][ C0] rcu: number: 0 0 0 [ 188.160599][ C0] rcu: cputime: 0 0 0 ==> 52500(ms) [ 188.168527][ C0] rcu: (detected by 0, t=10502 jiffies, g=8613, q=140 ncpus=2) [ 188.176184][ C0] Sending NMI from CPU 0 to CPUs 1: [ 188.181406][ C1] NMI backtrace for cpu 1 [ 188.181417][ C1] CPU: 1 PID: 5080 Comm: syz-executor304 Not tainted 6.7.0-rc2-syzkaller-00101-ge2b706c69190 #0 [ 188.181523][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 188.181534][ C1] RIP: 0010:kasan_check_range+0x4/0x190 [ 188.181581][ C1] Code: 14 8b 40 08 40 0f b6 f5 31 ff 89 43 0c e8 c4 dd ff ff 89 43 08 5b 5d 41 5c c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 66 0f 1f 00 <48> 85 f6 0f 84 48 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 [ 188.181602][ C1] RSP: 0018:ffffc900001f0da0 EFLAGS: 00000046 [ 188.181620][ C1] RAX: 0000000000000001 RBX: ffff8880b992b940 RCX: ffffffff816880ae [ 188.181634][ C1] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc900001f0dd0 [ 188.181648][ C1] RBP: 1ffff9200003e1b6 R08: 0000000000000001 R09: ffffed1017325728 [ 188.181663][ C1] R10: ffff8880b992b943 R11: 0000000000000002 R12: ffff8880b992b948 [ 188.181677][ C1] R13: ffff8880b992b950 R14: ffff888079a09340 R15: 0000000000000001 [ 188.181691][ C1] FS: 0000555556e5b380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 188.181714][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 188.181729][ C1] CR2: 0000555556e5b650 CR3: 000000001ed0b000 CR4: 00000000003506f0 [ 188.181743][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 188.181755][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 188.181769][ C1] Call Trace: [ 188.181781][ C1] [ 188.181790][ C1] ? show_regs+0x8f/0xa0 [ 188.181817][ C1] ? nmi_cpu_backtrace+0x1d4/0x390 [ 188.181846][ C1] ? nmi_cpu_backtrace_handler+0xc/0x10 [ 188.181873][ C1] ? nmi_handle+0x1a6/0x570 [ 188.181895][ C1] ? kasan_check_range+0x4/0x190 [ 188.181915][ C1] ? default_do_nmi+0x6a/0x160 [ 188.181942][ C1] ? exc_nmi+0x186/0x200 [ 188.181968][ C1] ? end_repeat_nmi+0xf/0x2a [ 188.181991][ C1] ? do_raw_spin_lock+0x12e/0x2b0 [ 188.182012][ C1] ? kasan_check_range+0x4/0x190 [ 188.182032][ C1] ? kasan_check_range+0x4/0x190 [ 188.182052][ C1] ? kasan_check_range+0x4/0x190 [ 188.182071][ C1] [ 188.182076][ C1] [ 188.182081][ C1] do_raw_spin_lock+0x12e/0x2b0 [ 188.182102][ C1] ? spin_bug+0x1d0/0x1d0 [ 188.182125][ C1] __hrtimer_run_queues+0x2bd/0xc20 [ 188.182161][ C1] ? enqueue_hrtimer+0x310/0x310 [ 188.182190][ C1] ? ktime_get_update_offsets_now+0x3bc/0x610 [ 188.182218][ C1] hrtimer_interrupt+0x31b/0x800 [ 188.182246][ C1] __sysvec_apic_timer_interrupt+0x105/0x400 [ 188.182274][ C1] sysvec_apic_timer_interrupt+0x90/0xb0 [ 188.182306][ C1] [ 188.182311][ C1] [ 188.182318][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 188.182364][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x70 [ 188.182390][ C1] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 e6 f6 e4 f6 48 89 df e8 4e 6e e5 f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 75 27 d7 f6 65 8b 05 46 a7 80 75 85 c0 74 12 5b [ 188.182408][ C1] RSP: 0018:ffffc90003c7f0b8 EFLAGS: 00000246 [ 188.182424][ C1] RAX: 0000000000000002 RBX: ffff888079a092e8 RCX: 1ffffffff23ed330 [ 188.182438][ C1] RDX: 0000000000000000 RSI: ffffffff8accb960 RDI: ffffffff8b2f0f00 [ 188.182452][ C1] RBP: 0000000000000246 R08: 0000000000000001 R09: fffffbfff23e35e8 [ 188.182466][ C1] R10: ffffffff91f1af47 R11: 0000000000000004 R12: 7fffffffffffffff [ 188.182479][ C1] R13: 0000000000000002 R14: 0000000000000001 R15: 0000000000000000 [ 188.182501][ C1] taprio_change+0x28cb/0x38a0 [ 188.182541][ C1] ? taprio_destroy+0x710/0x710 [ 188.182569][ C1] ? find_held_lock+0x2d/0x110 [ 188.182608][ C1] taprio_init+0x6c4/0x950 [ 188.182637][ C1] ? taprio_change+0x38a0/0x38a0 [ 188.182667][ C1] ? taprio_change+0x38a0/0x38a0 [ 188.182694][ C1] qdisc_create+0x4f7/0x10a0 [ 188.182717][ C1] ? lock_acquire+0x1ae/0x520 [ 188.182745][ C1] ? tc_get_qdisc+0xc20/0xc20 [ 188.182769][ C1] tc_modify_qdisc+0x4d5/0x1c40 [ 188.182797][ C1] ? qdisc_create+0x10a0/0x10a0 [ 188.182824][ C1] ? bpf_lsm_capable+0x9/0x10 [ 188.182858][ C1] ? qdisc_create+0x10a0/0x10a0 [ 188.182878][ C1] rtnetlink_rcv_msg+0x3c7/0xe00 [ 188.182908][ C1] ? rtnl_fill_vf+0x4a0/0x4a0 [ 188.182941][ C1] netlink_rcv_skb+0x16b/0x440 [ 188.182972][ C1] ? rtnl_fill_vf+0x4a0/0x4a0 [ 188.182999][ C1] ? netlink_ack+0x1380/0x1380 [ 188.183037][ C1] ? netlink_deliver_tap+0x1a0/0xd00 [ 188.183069][ C1] netlink_unicast+0x53b/0x810 [ 188.183101][ C1] ? netlink_attachskb+0x880/0x880 [ 188.183131][ C1] ? __sanitizer_cov_trace_switch+0x54/0x90 [ 188.183157][ C1] ? __phys_addr_symbol+0x30/0x70 [ 188.183183][ C1] ? __check_object_size+0x323/0x730 [ 188.183210][ C1] netlink_sendmsg+0x93c/0xe40 [ 188.183242][ C1] ? netlink_unicast+0x810/0x810 [ 188.183275][ C1] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 188.183300][ C1] ? netlink_unicast+0x810/0x810 [ 188.183330][ C1] __sock_sendmsg+0xd5/0x180 [ 188.183362][ C1] ____sys_sendmsg+0x6ac/0x940 [ 188.183388][ C1] ? copy_msghdr_from_user+0x10b/0x160 [ 188.183417][ C1] ? kernel_sendmsg+0x50/0x50 [ 188.183440][ C1] ? hlock_class+0x4e/0x130 [ 188.183474][ C1] ___sys_sendmsg+0x135/0x1d0 [ 188.183503][ C1] ? do_recvmmsg+0x740/0x740 [ 188.183545][ C1] ? recalc_sigpending_tsk+0x187/0x1d0 [ 188.183567][ C1] ? __fget_light+0x1fc/0x260 [ 188.183590][ C1] __sys_sendmsg+0x117/0x1e0 [ 188.183617][ C1] ? __sys_sendmsg_sock+0x30/0x30 [ 188.183653][ C1] ? ptrace_notify+0xf4/0x130 [ 188.183675][ C1] ? syscall_trace_enter.constprop.0+0xaf/0x1e0 [ 188.183705][ C1] do_syscall_64+0x40/0x110 [ 188.183735][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 188.183769][ C1] RIP: 0033:0x7f5bb9083ae9 [ 188.183791][ C1] 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 [ 188.183809][ C1] RSP: 002b:00007fff24f70f38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 188.183828][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5bb9083ae9 [ 188.183841][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 188.183854][ C1] RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 [ 188.183867][ C1] R10: 0000000100000000 R11: 0000000000000246 R12: 00007fff24f70f90 [ 188.183879][ C1] R13: 0000000000000001 R14: 00007fff24f70f90 R15: 0000000000000003 [ 188.183899][ C1] [ 188.183908][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.501 msecs