./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor615979846 <...> Warning: Permanently added '10.128.0.210' (ED25519) to the list of known hosts. execve("./syz-executor615979846", ["./syz-executor615979846"], 0x7ffcd29d6ea0 /* 10 vars */) = 0 brk(NULL) = 0x55557b86d000 brk(0x55557b86dd40) = 0x55557b86dd40 arch_prctl(ARCH_SET_FS, 0x55557b86d3c0) = 0 set_tid_address(0x55557b86d690) = 297 set_robust_list(0x55557b86d6a0, 24) = 0 rseq(0x55557b86dce0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor615979846", 4096) = 27 getrandom("\x27\x3b\xb0\xc9\x52\xbb\x93\x8a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557b86dd40 brk(0x55557b88ed40) = 0x55557b88ed40 brk(0x55557b88f000) = 0x55557b88f000 mprotect(0x7fd52caac000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557b86d690) = 298 ./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x55557b86d6a0, 24) = 0 [pid 298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 298] setpgid(0, 0) = 0 [pid 298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 298] write(3, "1000", 4) = 4 [pid 298] close(3) = 0 [pid 298] write(1, "executing program\n", 18executing program ) = 18 [pid 298] futex(0x7fd52cab23ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] rt_sigaction(SIGRT_1, {sa_handler=0x7fd52ca4e620, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fd52ca3fca0}, NULL, 8) = 0 [pid 298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd52c9b5000 [pid 298] mprotect(0x7fd52c9b6000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fd52c9d5990, parent_tid=0x7fd52c9d5990, exit_signal=0, stack=0x7fd52c9b5000, stack_size=0x20300, tls=0x7fd52c9d56c0} => {parent_tid=[299]}, 88) = 299 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] futex(0x7fd52cab23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] futex(0x7fd52cab23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 299 attached [pid 299] set_robust_list(0x7fd52c9d59a0, 24) = 0 [pid 299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 299] mknodat(AT_FDCWD, "./file0", 000) = 0 [pid 299] futex(0x7fd52cab23ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] <... futex resumed>) = 0 [pid 299] futex(0x7fd52cab23e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] futex(0x7fd52cab23e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 298] <... futex resumed>) = 0 [pid 299] pipe2( [pid 298] futex(0x7fd52cab23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... pipe2 resumed>[3, 4], 0) = 0 [pid 299] futex(0x7fd52cab23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 298] <... futex resumed>) = 0 [pid 298] futex(0x7fd52cab23e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] <... futex resumed>) = 1 [pid 298] <... futex resumed>) = 0 [pid 299] socket(AF_NETLINK, SOCK_RAW, NETLINK_XFRM [pid 298] futex(0x7fd52cab23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... socket resumed>) = 5 [pid 299] futex(0x7fd52cab23ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 298] <... futex resumed>) = 0 [pid 298] futex(0x7fd52cab23e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] futex(0x7fd52cab23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... futex resumed>) = 1 [ 37.297647][ T36] audit: type=1400 audit(1751452646.020:64): avc: denied { execmem } for pid=297 comm="syz-executor615" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 37.314800][ T88] SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65380 sclass=netlink_xfrm_socket pid=88 comm=kworker/0:2 [pid 299] mount(NULL, "./file0", "9p", MS_NOSUID|MS_NOEXEC|MS_POSIXACL, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000005," [pid 298] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 298] futex(0x7fd52cab23ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 298] futex(0x7fd52cab23fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd52c994000 [pid 298] mprotect(0x7fd52c995000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fd52c9b4990, parent_tid=0x7fd52c9b4990, exit_signal=0, stack=0x7fd52c994000, stack_size=0x20300, tls=0x7fd52c9b46c0}./strace-static-x86_64: Process 300 attached [pid 300] set_robust_list(0x7fd52c9b49a0, 24) = 0 [pid 300] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 300] futex(0x7fd52cab23f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] <... clone3 resumed> => {parent_tid=[300]}, 88) = 300 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] futex(0x7fd52cab23f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 300] <... futex resumed>) = 0 [pid 300] seccomp(SECCOMP_SET_MODE_FILTER, 0, {len=1, filter=0x200000000100}) = 0 [pid 298] <... futex resumed>) = 1 [pid 300] futex(0x7fd52cab23fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 298] futex(0x7fd52cab23fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 300] <... futex resumed>) = 202 [pid 298] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [ 37.317076][ T36] audit: type=1400 audit(1751452646.040:65): avc: denied { create } for pid=298 comm="syz-executor615" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 37.349878][ T36] audit: type=1400 audit(1751452646.040:66): avc: denied { mounton } for pid=298 comm="syz-executor615" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=file permissive=1 [ 37.372646][ T36] audit: type=1326 audit(1751452646.090:67): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=root:sysadm_r:sysadm_t pid=298 comm="syz-executor615" exe="/root/syz-executor615979846" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fd52ca286e9 code=0x7dff0000 [pid 297] kill(-298, SIGKILL) = 0 [pid 297] kill(298, SIGKILL) = 0 [pid 297] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 297] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 297] getdents64(3, 0x55557b86e730 /* 2 entries */, 32768) = 48 [pid 297] getdents64(3, 0x55557b86e730 /* 0 entries */, 32768) = 0 [pid 297] close(3) = 0 [ 244.600353][ T37] INFO: task syz-executor615:300 blocked for more than 122 seconds. [ 244.608394][ T37] Not tainted 6.12.30-syzkaller-gc40c54e66959 #0 [ 244.615321][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 244.624018][ T37] task:syz-executor615 state:D stack:0 pid:300 tgid:298 ppid:297 flags:0x00004004 [ 244.634214][ T37] Call Trace: [ 244.637495][ T37] [ 244.640436][ T37] __schedule+0x145b/0x1f10 [ 244.644984][ T37] ? __sched_text_start+0x10/0x10 [ 244.650031][ T37] ? kasan_save_track+0x4f/0x80 [ 244.654901][ T37] schedule+0xc6/0x240 [ 244.658958][ T37] schedule_timeout+0xb2/0x3a0 [ 244.663750][ T37] ? __cfi_schedule_timeout+0x10/0x10 [ 244.669135][ T37] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 244.674701][ T37] ? check_preempt_wakeup_fair+0x886/0xae0 [ 244.680529][ T37] wait_for_common+0x359/0x630 [ 244.685283][ T37] ? wait_for_completion+0x40/0x40 [ 244.690398][ T37] ? _raw_spin_lock_irq+0x8d/0x120 [ 244.695524][ T37] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 244.701098][ T37] wait_for_completion_state+0x19/0x40 [ 244.706571][ T37] do_coredump+0x7cf/0x2bd0 [ 244.711094][ T37] ? stack_depot_save_flags+0x399/0x800 [ 244.716662][ T37] ? save_fpregs_to_fpstate+0x196/0x230 [ 244.722228][ T37] ? kasan_save_track+0x4f/0x80 [ 244.727090][ T37] ? kasan_save_track+0x3e/0x80 [ 244.731956][ T37] ? kasan_save_free_info+0x4a/0x60 [ 244.737162][ T37] ? __kasan_slab_free+0x5f/0x80 [ 244.742113][ T37] ? __cfi_do_coredump+0x10/0x10 [ 244.747063][ T37] ? __kasan_slab_free+0x6a/0x80 [ 244.752016][ T37] ? kmem_cache_free+0x1c1/0x4c0 [ 244.756972][ T37] get_signal+0x11fd/0x14f0 [ 244.761494][ T37] arch_do_signal_or_restart+0x96/0x720 [ 244.767060][ T37] ? __cfi_ptrace_notify+0x10/0x10 [ 244.772177][ T37] ? __cfi_arch_do_signal_or_restart+0x10/0x10 [ 244.778341][ T37] ? syscall_exit_work+0x86/0x160 [ 244.783384][ T37] syscall_exit_to_user_mode+0x58/0xb0 [ 244.788856][ T37] do_syscall_64+0x64/0xf0 [ 244.793277][ T37] ? clear_bhb_loop+0x50/0xa0 [ 244.797962][ T37] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 244.803861][ T37] RIP: 0033:0x7fd52ca286e9 [ 244.808288][ T37] RSP: 002b:00007fd52c9b4218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 244.816708][ T37] RAX: 00000000000000ca RBX: 00007fd52cab23f8 RCX: 00007fd52ca286e9 [ 244.824714][ T37] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd52cab23fc [ 244.832735][ T37] RBP: 00007fd52cab23f0 R08: 0000000000000000 R09: 0000000000000000 [ 244.840765][ T37] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd52ca7f07c [ 244.848741][ T37] R13: 000000000000006e R14: 00007ffd9c5b8110 R15: 00007ffd9c5b81f8 [ 244.856727][ T37] [ 244.859769][ T37] NMI backtrace for cpu 1 [ 244.859784][ T37] CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.30-syzkaller-gc40c54e66959 #0 d09897295957ba49fce5d3909215422667ca3e4a [ 244.859805][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 244.859813][ T37] Call Trace: [ 244.859817][ T37] [ 244.859822][ T37] __dump_stack+0x21/0x30 [ 244.859842][ T37] dump_stack_lvl+0x10c/0x190 [ 244.859858][ T37] ? __cfi_dump_stack_lvl+0x10/0x10 [ 244.859875][ T37] dump_stack+0x19/0x20 [ 244.859890][ T37] nmi_cpu_backtrace+0x2bf/0x2d0 [ 244.859912][ T37] ? rcu_read_unlock_special+0xab/0x480 [ 244.859926][ T37] ? __cfi_nmi_cpu_backtrace+0x10/0x10 [ 244.859946][ T37] ? sched_show_task+0x379/0x560 [ 244.859962][ T37] ? __rcu_read_unlock+0xc0/0xc0 [ 244.859974][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10 [ 244.859989][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10 [ 244.860009][ T37] nmi_trigger_cpumask_backtrace+0x142/0x2c0 [ 244.860030][ T37] arch_trigger_cpumask_backtrace+0x14/0x20 [ 244.860045][ T37] watchdog+0xd8f/0xed0 [ 244.860061][ T37] ? __cfi_watchdog+0x10/0x10 [ 244.860076][ T37] ? __kasan_check_read+0x15/0x20 [ 244.860092][ T37] ? __kthread_parkme+0x138/0x180 [ 244.860111][ T37] ? schedule+0xc6/0x240 [ 244.860124][ T37] kthread+0x2ca/0x370 [ 244.860144][ T37] ? __cfi_watchdog+0x10/0x10 [ 244.860159][ T37] ? __cfi_kthread+0x10/0x10 [ 244.860179][ T37] ret_from_fork+0x64/0xa0 [ 244.860195][ T37] ? __cfi_kthread+0x10/0x10 [ 244.860214][ T37] ret_from_fork_asm+0x1a/0x30 [ 244.860234][ T37] [ 245.014547][ T37] Sending NMI from CPU 1 to CPUs 0: [ 245.019785][ C0] NMI backtrace for cpu 0 [ 245.019794][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.30-syzkaller-gc40c54e66959 #0 d09897295957ba49fce5d3909215422667ca3e4a [ 245.019812][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 245.019820][ C0] RIP: 0010:pv_native_safe_halt+0x17/0x20 [ 245.019843][ C0] Code: cc cc cc b8 7b 7c dc 6c 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 73 bc 41 00 f3 0f 1e fa 55 48 89 e5 fb f4 <5d> e9 c3 59 02 00 cc cc cc b8 00 00 00 00 90 90 90 90 90 90 90 90 [ 245.019854][ C0] RSP: 0018:ffffffff87207da0 EFLAGS: 000002c6 [ 245.019867][ C0] RAX: ffff8881f6e00000 RBX: ffffffff87215540 RCX: ffffffff8585900e [ 245.019878][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 000000000001b09c [ 245.019886][ C0] RBP: ffffffff87207da0 R08: ffff8881f6e39733 R09: 1ffff1103edc72e6 [ 245.019896][ C0] R10: dffffc0000000000 R11: ffffed103edc72e7 R12: 1ffffffff0e42aa8 [ 245.019906][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87ca72e8 [ 245.019915][ C0] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 245.019926][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 245.019936][ C0] CR2: 000055557b86d370 CR3: 000000010c376000 CR4: 00000000003526b0 [ 245.019948][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 245.019956][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 245.019965][ C0] Call Trace: [ 245.019969][ C0] [ 245.019974][ C0] default_idle+0x17/0x30 [ 245.019993][ C0] arch_cpu_idle+0xd/0x20 [ 245.020024][ C0] default_idle_call+0x3f/0x80 [ 245.020043][ C0] do_idle+0x1a0/0x470 [ 245.020063][ C0] ? idle_inject_timer_fn+0x80/0x80 [ 245.020083][ C0] ? __cfi_set_cpus_allowed_ptr+0x10/0x10 [ 245.020104][ C0] ? radix_tree_lookup+0x250/0x2a0 [ 245.020117][ C0] cpu_startup_entry+0x48/0x70 [ 245.020137][ C0] rest_init+0x10b/0x130 [ 245.020155][ C0] ? __cfi_x86_late_time_init+0x10/0x10 [ 245.020171][ C0] start_kernel+0x46a/0x4bb [ 245.020191][ C0] x86_64_start_reservations+0x2e/0x30 [ 245.020205][ C0] x86_64_start_kernel+0x6a/0x7b [ 245.020218][ C0] common_startup_64+0x13b/0x157 [ 245.020236][ C0]