./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2122920123 <...> Warning: Permanently added '10.128.1.121' (ED25519) to the list of known hosts. execve("./syz-executor2122920123", ["./syz-executor2122920123"], 0x7ffe1cc3a7b0 /* 10 vars */) = 0 brk(NULL) = 0x55556b4c0000 brk(0x55556b4c0d00) = 0x55556b4c0d00 arch_prctl(ARCH_SET_FS, 0x55556b4c0380) = 0 set_tid_address(0x55556b4c0650) = 5858 set_robust_list(0x55556b4c0660, 24) = 0 rseq(0x55556b4c0ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2122920123", 4096) = 28 getrandom("\x87\x20\x27\x04\x1e\x90\xe9\x48", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556b4c0d00 brk(0x55556b4e1d00) = 0x55556b4e1d00 brk(0x55556b4e2000) = 0x55556b4e2000 mprotect(0x7f9e69bc1000, 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 mkdir("./syzkaller.oBoexv", 0700) = 0 chmod("./syzkaller.oBoexv", 0777) = 0 chdir("./syzkaller.oBoexv") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5860 attached [pid 5860] set_robust_list(0x55556b4c0660, 24 [pid 5858] <... clone resumed>, child_tidptr=0x55556b4c0650) = 5860 [pid 5860] <... set_robust_list resumed>) = 0 [pid 5860] chdir("./0") = 0 [pid 5860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5860] setpgid(0, 0) = 0 [pid 5860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5860] write(3, "1000", 4) = 4 [pid 5860] close(3) = 0 [pid 5860] symlink("/dev/binderfs", "./binderfs"executing program ) = 0 [pid 5860] write(1, "executing program\n", 18) = 18 [pid 5860] memfd_create("syzkaller", 0) = 3 [pid 5860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9e61600000 [pid 5860] write(3, "\x68\x73\x71\x73\x07\x00\x00\x00\xfd\xf1\x7c\x63\x00\x40\x00\x00\x00\x00\x00\x00\x03\x00\x0e\x00\xd1\x01\x01\x00\x04\x00\x00\x00\x1f\x01\x00\x00\x00\x00\x00\x00\xed\x02\x00\x00\x00\x00\x00\x00\x91\x02\x00\x00\x00\x00\x00\x00\xd5\x02\x00\x00\x00\x00\x00\x00\x8f\x00\x00\x00\x00\x00\x00\x00\xd0\x01\x00\x00\x00\x00\x00\x00\x49\x02\x00\x00\x00\x00\x00\x00\x83\x02\x00\x00\x00\x00\x00\x00\x1a\x73\x79\x7a"..., 4096) = 4096 [pid 5860] munmap(0x7f9e61600000, 138412032) = 0 [pid 5860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5860] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5860] close(3) = 0 [pid 5860] close(4) = 0 [pid 5860] mkdir("./file0", 0777) = 0 [pid 5860] mount("/dev/loop0", "./file0", "squashfs", MS_NODIRATIME, "") = 0 [pid 5860] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5860] chdir("./file0") = 0 [ 91.600724][ T5860] loop0: detected capacity change from 0 to 8 [pid 5860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 91.664705][ T5860] process 'syz-executor212' launched './file2' with NULL argv: empty string added [ 91.891032][ T24] cfg80211: failed to load regulatory.db [pid 5860] execveat(AT_FDCWD, "./file2", NULL, NULL, 0 [pid 5858] kill(-5860, SIGKILL) = 0 [pid 5858] kill(5860, SIGKILL [pid 5860] <... execveat resumed>) = ? [pid 5858] <... kill resumed>) = 0 [pid 5860] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5860, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=2 /* 0.02 s */} --- restart_syscall(<... resuming interrupted kill ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556b4c16f0 /* 4 entries */, 32768) = 112 [ 286.449483][ T31] INFO: task syz-executor212:5858 blocked for more than 143 seconds. [ 286.457639][ T31] Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 [ 286.464817][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.473719][ T31] task:syz-executor212 state:D stack:25128 pid:5858 tgid:5858 ppid:5854 task_flags:0x400100 flags:0x00004002 [ 286.485756][ T31] Call Trace: [ 286.489057][ T31] [ 286.492049][ T31] __schedule+0x16f5/0x4d00 [ 286.496624][ T31] ? schedule+0x165/0x360 [ 286.501022][ T31] ? __pfx___schedule+0x10/0x10 [ 286.505940][ T31] ? schedule+0x91/0x360 [ 286.510266][ T31] schedule+0x165/0x360 [ 286.514698][ T31] io_schedule+0x80/0xd0 [ 286.518958][ T31] folio_wait_bit_common+0x6b0/0xb90 [ 286.524345][ T31] ? __pfx_folio_wait_bit_common+0x10/0x10 [ 286.530237][ T31] ? __pfx_wake_page_function+0x10/0x10 [ 286.535817][ T31] ? folios_put_refs+0x559/0x640 [ 286.540830][ T31] ? __pfx_find_lock_entries+0x10/0x10 [ 286.546421][ T31] __filemap_get_folio+0x139/0xaf0 [ 286.551617][ T31] ? mlock_drain_local+0x28e/0x490 [ 286.556769][ T31] truncate_inode_pages_range+0x3ed/0xda0 [ 286.562579][ T31] ? kasan_save_stack+0x4d/0x60 [ 286.567456][ T31] ? kasan_save_stack+0x3e/0x60 [ 286.572379][ T31] ? deactivate_locked_super+0xb9/0x130 [ 286.577950][ T31] ? cleanup_mnt+0x425/0x4c0 [ 286.582925][ T31] ? task_work_run+0x1d4/0x260 [ 286.587732][ T31] ? ptrace_notify+0x281/0x2c0 [ 286.592574][ T31] ? syscall_exit_work+0xc6/0x1d0 [ 286.597617][ T31] ? __pfx_truncate_inode_pages_range+0x10/0x10 [ 286.603943][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.608847][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.614158][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.619523][ T31] evict+0x517/0x9c0 [ 286.623451][ T31] ? __pfx_evict+0x10/0x10 [ 286.627960][ T31] ? do_raw_spin_unlock+0x122/0x240 [ 286.633212][ T31] evict_inodes+0x636/0x6c0 [ 286.637755][ T31] ? __pfx_evict_inodes+0x10/0x10 [ 286.642843][ T31] generic_shutdown_super+0x9a/0x2c0 [ 286.648153][ T31] kill_block_super+0x44/0x90 [ 286.652892][ T31] deactivate_locked_super+0xb9/0x130 [ 286.658286][ T31] cleanup_mnt+0x425/0x4c0 [ 286.662761][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.667992][ T31] task_work_run+0x1d4/0x260 [ 286.672639][ T31] ? __pfx_task_work_run+0x10/0x10 [ 286.677776][ T31] ? path_umount+0x1ea/0xb70 [ 286.682426][ T31] ptrace_notify+0x281/0x2c0 [ 286.687034][ T31] ? __pfx_ptrace_notify+0x10/0x10 [ 286.692185][ T31] ? __x64_sys_umount+0x122/0x160 [ 286.697227][ T31] ? __pfx___x64_sys_umount+0x10/0x10 [ 286.702669][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.707478][ T31] syscall_exit_work+0xc6/0x1d0 [ 286.712412][ T31] do_syscall_64+0x2ad/0x3b0 [ 286.717043][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.722321][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.728407][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.733168][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.739086][ T31] RIP: 0033:0x7f9e69b4e387 [ 286.743575][ T31] RSP: 002b:00007fff6c8f1fc8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 286.752057][ T31] RAX: 0000000000000000 RBX: 0000000000000063 RCX: 00007f9e69b4e387 [ 286.760075][ T31] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff6c8f2080 [ 286.768086][ T31] RBP: 00007fff6c8f2080 R08: 0000000000000000 R09: 0000000000000000 [ 286.776166][ T31] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff6c8f30f0 [ 286.784250][ T31] R13: 000055556b4c16c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 286.792411][ T31] [ 286.795462][ T31] [ 286.795462][ T31] Showing all locks held in the system: [ 286.803218][ T31] 1 lock held by khungtaskd/31: [ 286.808077][ T31] #0: ffffffff8e13bfa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.818107][ T31] 2 locks held by getty/5615: [ 286.822824][ T31] #0: ffff888034b860a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.832748][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.842932][ T31] 1 lock held by syz-executor212/5858: [ 286.848492][ T31] #0: ffff888032cd20e0 (&type->s_umount_key#42){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 [ 286.858873][ T31] [ 286.861238][ T31] ============================================= [ 286.861238][ T31] [ 286.869746][ T31] NMI backtrace for cpu 1 [ 286.869778][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) [ 286.869803][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.869816][ T31] Call Trace: [ 286.869824][ T31] [ 286.869833][ T31] dump_stack_lvl+0x189/0x250 [ 286.869860][ T31] ? __wake_up_klogd+0xd9/0x110 [ 286.869891][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.869917][ T31] ? __pfx__printk+0x10/0x10 [ 286.869959][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.869988][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.870010][ T31] ? _printk+0xcf/0x120 [ 286.870044][ T31] ? __pfx__printk+0x10/0x10 [ 286.870076][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.870112][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.870141][ T31] watchdog+0xfee/0x1030 [ 286.870173][ T31] ? watchdog+0x1de/0x1030 [ 286.870211][ T31] kthread+0x711/0x8a0 [ 286.870242][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.870270][ T31] ? __pfx_kthread+0x10/0x10 [ 286.870311][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.870336][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.870361][ T31] ? __pfx_kthread+0x10/0x10 [ 286.870388][ T31] ret_from_fork+0x3fc/0x770 [ 286.870412][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.870438][ T31] ? __switch_to_asm+0x39/0x70 [ 286.870464][ T31] ? __switch_to_asm+0x33/0x70 [ 286.870488][ T31] ? __pfx_kthread+0x10/0x10 [ 286.870515][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.870559][ T31] [ 286.870567][ T31] Sending NMI from CPU 1 to CPUs 0: [ 287.027421][ C0] NMI backtrace for cpu 0 [ 287.027437][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) [ 287.027475][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.027485][ C0] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 287.027542][ C0] Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 ec 0f 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 [ 287.027558][ C0] RSP: 0018:ffffffff8de07d80 EFLAGS: 000002c6 [ 287.027573][ C0] RAX: 1462465a91b06e00 RBX: ffffffff8196cd28 RCX: 1462465a91b06e00 [ 287.027587][ C0] RDX: 0000000000000001 RSI: ffffffff8d9aefc8 RDI: ffffffff8be33740 [ 287.027599][ C0] RBP: ffffffff8de07ea8 R08: ffff8880b8632f5b R09: 1ffff110170c65eb [ 287.027612][ C0] R10: dffffc0000000000 R11: ffffed10170c65ec R12: ffffffff8fa35430 [ 287.027625][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a50 [ 287.027637][ C0] FS: 0000000000000000(0000) GS:ffff888125bd7000(0000) knlGS:0000000000000000 [ 287.027651][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.027662][ C0] CR2: 0000557f2636e168 CR3: 000000000df36000 CR4: 00000000003526f0 [ 287.027678][ C0] Call Trace: [ 287.027686][ C0] [ 287.027693][ C0] default_idle+0x13/0x20 [ 287.027709][ C0] default_idle_call+0x74/0xb0 [ 287.027726][ C0] do_idle+0x1e8/0x510 [ 287.027748][ C0] ? __pfx_do_idle+0x10/0x10 [ 287.027766][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.027790][ C0] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 287.027813][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 287.027840][ C0] cpu_startup_entry+0x44/0x60 [ 287.027857][ C0] rest_init+0x2de/0x300 [ 287.027874][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 287.027910][ C0] start_kernel+0x47d/0x500 [ 287.027940][ C0] x86_64_start_reservations+0x24/0x30 [ 287.027960][ C0] x86_64_start_kernel+0x143/0x1c0 [ 287.027981][ C0] common_startup_64+0x13e/0x147 [ 287.028012][ C0] [ 287.227192][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.234057][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc5-next-20250708-syzkaller #0 PREEMPT(full) [ 287.245344][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.255404][ T31] Call Trace: [ 287.258687][ T31] [ 287.261622][ T31] dump_stack_lvl+0x99/0x250 [ 287.266317][ T31] ? __asan_memcpy+0x40/0x70 [ 287.270920][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.276141][ T31] ? __pfx__printk+0x10/0x10 [ 287.280767][ T31] panic+0x2e2/0x7b0 [ 287.284695][ T31] ? __pfx_panic+0x10/0x10 [ 287.289172][ T31] ? nmi_backtrace_stall_check+0x433/0x440 [ 287.295005][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.300402][ T31] ? nmi_trigger_cpumask_backtrace+0x2b6/0x300 [ 287.306582][ T31] watchdog+0x102d/0x1030 [ 287.310928][ T31] ? watchdog+0x1de/0x1030 [ 287.315372][ T31] kthread+0x711/0x8a0 [ 287.319462][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.324151][ T31] ? __pfx_kthread+0x10/0x10 [ 287.328752][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.333961][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.339183][ T31] ? __pfx_kthread+0x10/0x10 [ 287.343784][ T31] ret_from_fork+0x3fc/0x770 [ 287.348389][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.353513][ T31] ? __switch_to_asm+0x39/0x70 [ 287.358286][ T31] ? __switch_to_asm+0x33/0x70 [ 287.363057][ T31] ? __pfx_kthread+0x10/0x10 [ 287.367661][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.372455][ T31] [ 287.375857][ T31] Kernel Offset: disabled [ 287.380187][ T31] Rebooting in 86400 seconds..