./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor167859882 <...> Warning: Permanently added '10.128.0.28' (ED25519) to the list of known hosts. execve("./syz-executor167859882", ["./syz-executor167859882"], 0x7ffe7f18eba0 /* 10 vars */) = 0 brk(NULL) = 0x55556fd39000 brk(0x55556fd39d40) = 0x55556fd39d40 arch_prctl(ARCH_SET_FS, 0x55556fd393c0) = 0 set_tid_address(0x55556fd39690) = 296 set_robust_list(0x55556fd396a0, 24) = 0 rseq(0x55556fd39ce0, 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-executor167859882", 4096) = 27 getrandom("\x4d\x01\xca\x08\xd0\xf1\x2f\xb2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556fd39d40 brk(0x55556fd5ad40) = 0x55556fd5ad40 brk(0x55556fd5b000) = 0x55556fd5b000 mprotect(0x7fe6d1add000, 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=0x55556fd39690) = 297 ./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x55556fd396a0, 24) = 0 [pid 297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 297] setpgid(0, 0) = 0 [pid 297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 297] write(3, "1000", 4) = 4 [pid 297] close(3) = 0 [pid 297] write(1, "executing program\n", 18executing program ) = 18 [pid 297] futex(0x7fe6d1ae33ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] rt_sigaction(SIGRT_1, {sa_handler=0x7fe6d1a7f620, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe6d1a70ca0}, NULL, 8) = 0 [pid 297] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6d19e6000 [pid 297] mprotect(0x7fe6d19e7000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 297] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 297] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6d1a06990, parent_tid=0x7fe6d1a06990, exit_signal=0, stack=0x7fe6d19e6000, stack_size=0x20300, tls=0x7fe6d1a066c0} => {parent_tid=[298]}, 88) = 298 ./strace-static-x86_64: Process 298 attached [pid 297] rt_sigprocmask(SIG_SETMASK, [], [pid 298] set_robust_list(0x7fe6d1a069a0, 24 [pid 297] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 298] <... set_robust_list resumed>) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] futex(0x7fe6d1ae33e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 297] futex(0x7fe6d1ae33e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 298] <... futex resumed>) = 0 [pid 297] <... futex resumed>) = 1 [pid 298] mknodat(AT_FDCWD, "./file0", 000 [pid 297] futex(0x7fe6d1ae33ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... mknodat resumed>) = 0 [pid 298] futex(0x7fe6d1ae33ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 297] <... futex resumed>) = 0 [pid 298] futex(0x7fe6d1ae33e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 297] futex(0x7fe6d1ae33e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 298] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 297] <... futex resumed>) = 0 [pid 298] pipe2( [pid 297] futex(0x7fe6d1ae33ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... pipe2 resumed>[3, 4], 0) = 0 [pid 298] futex(0x7fe6d1ae33ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 297] <... futex resumed>) = 0 [pid 297] futex(0x7fe6d1ae33e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] socket(AF_NETLINK, SOCK_RAW, NETLINK_XFRM [pid 297] futex(0x7fe6d1ae33ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... socket resumed>) = 5 [pid 298] futex(0x7fe6d1ae33ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] futex(0x7fe6d1ae33e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 297] <... futex resumed>) = 0 [pid 297] futex(0x7fe6d1ae33e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] <... futex resumed>) = 0 [pid 297] futex(0x7fe6d1ae33ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 27.867190][ T36] audit: type=1400 audit(1751440574.090:64): avc: denied { execmem } for pid=296 comm="syz-executor167" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 27.890917][ T36] audit: type=1400 audit(1751440574.110:65): avc: denied { create } for pid=297 comm="syz-executor167" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [pid 298] mount(NULL, "./file0", "9p", MS_NOSUID|MS_NOEXEC|MS_POSIXACL, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000005," [pid 297] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 297] futex(0x7fe6d1ae33fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe6d19c5000 [pid 297] mprotect(0x7fe6d19c6000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 297] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 297] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe6d19e5990, parent_tid=0x7fe6d19e5990, exit_signal=0, stack=0x7fe6d19c5000, stack_size=0x20300, tls=0x7fe6d19e56c0} => {parent_tid=[299]}, 88) = 299 [pid 297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 297] futex(0x7fe6d1ae33f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 299 attached ) = 0 [pid 299] set_robust_list(0x7fe6d19e59a0, 24) = 0 [pid 297] futex(0x7fe6d1ae33fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 299] seccomp(SECCOMP_SET_MODE_FILTER, 0, {len=1, filter=0x200000000100}) = 0 [pid 299] futex(0x7fe6d1ae33fc, FUTEX_WAKE_PRIVATE, 1000000) = 202 [ 27.895431][ T10] SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65380 sclass=netlink_xfrm_socket pid=10 comm=kworker/0:1 [ 27.913038][ T36] audit: type=1400 audit(1751440574.120:66): avc: denied { mounton } for pid=297 comm="syz-executor167" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=file permissive=1 [ 27.949594][ T36] audit: type=1326 audit(1751440574.180:67): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=root:sysadm_r:sysadm_t pid=297 comm="syz-executor167" exe="/root/syz-executor167859882" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fe6d1a596e9 code=0x7dff0000 [pid 296] kill(-297, SIGKILL) = 0 [pid 296] kill(297, SIGKILL) = 0 [pid 296] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 296] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 296] getdents64(3, 0x55556fd3a730 /* 2 entries */, 32768) = 48 [pid 296] getdents64(3, 0x55556fd3a730 /* 0 entries */, 32768) = 0 [pid 296] close(3) = 0 [ 166.011348][ T45] sched: DL replenish lagged too much [ 249.821390][ T37] INFO: task syz-executor167:299 blocked for more than 122 seconds. [ 249.829446][ T37] Not tainted 6.12.30-syzkaller-gc40c54e66959 #0 [ 249.836725][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 249.845764][ T37] task:syz-executor167 state:D stack:0 pid:299 tgid:297 ppid:296 flags:0x00004004 [ 249.856301][ T37] Call Trace: [ 249.859633][ T37] [ 249.862636][ T37] __schedule+0x145b/0x1f10 [ 249.867192][ T37] ? __sched_text_start+0x10/0x10 [ 249.872285][ T37] ? kasan_save_track+0x4f/0x80 [ 249.877169][ T37] schedule+0xc6/0x240 [ 249.881293][ T37] schedule_timeout+0xb2/0x3a0 [ 249.886089][ T37] ? __cfi_schedule_timeout+0x10/0x10 [ 249.891505][ T37] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 249.897080][ T37] ? check_preempt_wakeup_fair+0x886/0xae0 [ 249.902954][ T37] wait_for_common+0x359/0x630 [ 249.907740][ T37] ? wait_for_completion+0x40/0x40 [ 249.912888][ T37] ? _raw_spin_lock_irq+0x8d/0x120 [ 249.918061][ T37] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 249.923661][ T37] wait_for_completion_state+0x19/0x40 [ 249.929155][ T37] do_coredump+0x7cf/0x2bd0 [ 249.933751][ T37] ? stack_depot_save_flags+0x399/0x800 [ 249.939344][ T37] ? save_fpregs_to_fpstate+0x196/0x230 [ 249.944968][ T37] ? kasan_save_track+0x4f/0x80 [ 249.949852][ T37] ? kasan_save_track+0x3e/0x80 [ 249.954757][ T37] ? kasan_save_free_info+0x4a/0x60 [ 249.959981][ T37] ? __kasan_slab_free+0x5f/0x80 [ 249.964973][ T37] ? __cfi_do_coredump+0x10/0x10 [ 249.969945][ T37] ? __kasan_slab_free+0x6a/0x80 [ 249.975006][ T37] ? kmem_cache_free+0x1c1/0x4c0 [ 249.979976][ T37] get_signal+0x11fd/0x14f0 [ 249.984534][ T37] arch_do_signal_or_restart+0x96/0x720 [ 249.990119][ T37] ? __cfi_ptrace_notify+0x10/0x10 [ 249.995300][ T37] ? __cfi_arch_do_signal_or_restart+0x10/0x10 [ 250.001525][ T37] ? syscall_exit_work+0x86/0x160 [ 250.006563][ T37] syscall_exit_to_user_mode+0x58/0xb0 [ 250.012089][ T37] do_syscall_64+0x64/0xf0 [ 250.016522][ T37] ? clear_bhb_loop+0x50/0xa0 [ 250.021242][ T37] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 250.027156][ T37] RIP: 0033:0x7fe6d1a596e9 [ 250.031623][ T37] RSP: 002b:00007fe6d19e5218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 250.040053][ T37] RAX: 00000000000000ca RBX: 00007fe6d1ae33f8 RCX: 00007fe6d1a596e9 [ 250.048075][ T37] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe6d1ae33fc [ 250.056092][ T37] RBP: 00007fe6d1ae33f0 R08: 0000000000000000 R09: 0000000000000000 [ 250.064124][ T37] R10: 00007ffe047bd357 R11: 0000000000000246 R12: 00007fe6d1ab007c [ 250.072129][ T37] R13: 000000000000006e R14: 00007ffe047bd270 R15: 00007ffe047bd358 [ 250.080104][ T37] [ 250.083174][ T37] NMI backtrace for cpu 1 [ 250.083190][ T37] CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.30-syzkaller-gc40c54e66959 #0 d09897295957ba49fce5d3909215422667ca3e4a [ 250.083223][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 250.083236][ T37] Call Trace: [ 250.083244][ T37] [ 250.083253][ T37] __dump_stack+0x21/0x30 [ 250.083285][ T37] dump_stack_lvl+0x10c/0x190 [ 250.083312][ T37] ? __cfi_dump_stack_lvl+0x10/0x10 [ 250.083339][ T37] dump_stack+0x19/0x20 [ 250.083362][ T37] nmi_cpu_backtrace+0x2bf/0x2d0 [ 250.083396][ T37] ? rcu_read_unlock_special+0xab/0x480 [ 250.083418][ T37] ? __cfi_nmi_cpu_backtrace+0x10/0x10 [ 250.083451][ T37] ? sched_show_task+0x379/0x560 [ 250.083478][ T37] ? __rcu_read_unlock+0xc0/0xc0 [ 250.083500][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10 [ 250.083526][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10 [ 250.083551][ T37] nmi_trigger_cpumask_backtrace+0x142/0x2c0 [ 250.083588][ T37] arch_trigger_cpumask_backtrace+0x14/0x20 [ 250.083614][ T37] watchdog+0xd8f/0xed0 [ 250.083641][ T37] ? __cfi_watchdog+0x10/0x10 [ 250.083667][ T37] ? __kasan_check_read+0x15/0x20 [ 250.083695][ T37] ? __kthread_parkme+0x138/0x180 [ 250.083726][ T37] ? schedule+0xc6/0x240 [ 250.083749][ T37] kthread+0x2ca/0x370 [ 250.083783][ T37] ? __cfi_watchdog+0x10/0x10 [ 250.083809][ T37] ? __cfi_kthread+0x10/0x10 [ 250.083844][ T37] ret_from_fork+0x64/0xa0 [ 250.083872][ T37] ? __cfi_kthread+0x10/0x10 [ 250.083928][ T37] ret_from_fork_asm+0x1a/0x30 [ 250.083962][ T37] [ 250.083971][ T37] Sending NMI from CPU 1 to CPUs 0: [ 250.244285][ C0] NMI backtrace for cpu 0 [ 250.244299][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.30-syzkaller-gc40c54e66959 #0 d09897295957ba49fce5d3909215422667ca3e4a [ 250.244320][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 250.244330][ C0] RIP: 0010:pv_native_safe_halt+0x17/0x20 [ 250.244358][ C0] Code: cc cc cc b8 b1 ac 9e 23 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 [ 250.244371][ C0] RSP: 0018:ffffffff87207da0 EFLAGS: 000002c6 [ 250.244386][ C0] RAX: ffff8881f6e00000 RBX: ffffffff87215540 RCX: ffffffff8585900e [ 250.244399][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: 000000000001c154 [ 250.244409][ C0] RBP: ffffffff87207da0 R08: ffff8881f6e39733 R09: 1ffff1103edc72e6 [ 250.244421][ C0] R10: dffffc0000000000 R11: ffffed103edc72e7 R12: 1ffffffff0e42aa8 [ 250.244433][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87ca72e8 [ 250.244444][ C0] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 250.244457][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 250.244468][ C0] CR2: 000055556fd39370 CR3: 000000010bf9a000 CR4: 00000000003526b0 [ 250.244482][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 250.244492][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 250.244502][ C0] Call Trace: [ 250.244508][ C0] [ 250.244515][ C0] default_idle+0x17/0x30 [ 250.244538][ C0] arch_cpu_idle+0xd/0x20 [ 250.244559][ C0] default_idle_call+0x3f/0x80 [ 250.244581][ C0] do_idle+0x1a0/0x470 [ 250.244605][ C0] ? idle_inject_timer_fn+0x80/0x80 [ 250.244630][ C0] cpu_startup_entry+0x48/0x70 [ 250.244653][ C0] rest_init+0x10b/0x130 [ 250.244675][ C0] ? __cfi_x86_late_time_init+0x10/0x10 [ 250.244693][ C0] start_kernel+0x46a/0x4bb [ 250.244717][ C0] x86_64_start_reservations+0x2e/0x30 [ 250.244734][ C0] x86_64_start_kernel+0x6a/0x7b [ 250.244750][ C0] common_startup_64+0x13b/0x157 [ 250.244770][ C0]