./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor621529877 <...> no interfaces have a carrier [ 62.901855][ T5486] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.921213][ T5486] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK syzkaller syzkaller login: [ 91.983250][ T1218] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.18' (ED25519) to the list of known hosts. execve("./syz-executor621529877", ["./syz-executor621529877"], 0x7ffde2c7b040 /* 10 vars */) = 0 brk(NULL) = 0x555555a14000 brk(0x555555a14d00) = 0x555555a14d00 arch_prctl(ARCH_SET_FS, 0x555555a14380) = 0 set_tid_address(0x555555a14650) = 5837 set_robust_list(0x555555a14660, 24) = 0 rseq(0x555555a14ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor621529877", 4096) = 27 getrandom("\xc8\xa8\x1a\x22\x95\x2f\xa5\x7f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555a14d00 brk(0x555555a35d00) = 0x555555a35d00 brk(0x555555a36000) = 0x555555a36000 mprotect(0x7efd25c40000, 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.GaHaLX", 0700) = 0 chmod("./syzkaller.GaHaLX", 0777) = 0 chdir("./syzkaller.GaHaLX") = 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 5838 attached , child_tidptr=0x555555a14650) = 5838 [pid 5838] set_robust_list(0x555555a14660, 24) = 0 [pid 5838] chdir("./0") = 0 [pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5838] setpgid(0, 0) = 0 [pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5838] write(3, "1000", 4) = 4 [pid 5838] close(3) = 0 [pid 5838] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5838] write(1, "executing program\n", 18) = 18 [pid 5838] memfd_create("syzkaller", 0) = 3 [pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd1d600000 [pid 5838] write(3, "\x68\x73\x71\x73\x07\x00\x00\x00\xfd\xf1\x7c\x63\x00\x00\x10\x00\x00\x00\x00\x00\x04\x00\x14\x00\xd1\xe1\x01\x00\x04\x00\x00\x00\x1f\x01\x00\x00\x00\x00\x00\x00\x64\x03\x00\x00\x00\x00\x00\x00\x08\x03\x00\x00\x00\x00\x00\x00\x4c\x03\x00\x00\x00\x00\x00\x00\x06\x01\x00\x00\x00\x00\x00\x00\x47\x02\x00\x00\x00\x00\x00\x00\xc0\x02\x00\x00\x00\x00\x00\x00\xfa\x02\x00\x00\x00\x00\x00\x00\xfd\x37\x7a\x58"..., 4096) = 4096 [pid 5838] munmap(0x7efd1d600000, 138412032) = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5838] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5838] close(3) = 0 [pid 5838] close(4) = 0 [pid 5838] mkdir("./file0", 0777) = 0 [pid 5838] mount("/dev/loop0", "./file0", "squashfs", MS_SYNCHRONOUS, "") = 0 [ 118.233118][ T5838] loop0: detected capacity change from 0 to 8 [pid 5838] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5838] chdir("./file0") = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5838] open("./file2", O_RDONLY [pid 5837] kill(-5838, SIGKILL) = 0 [pid 5837] kill(5838, SIGKILL [pid 5838] <... open resumed>) = ? [pid 5837] <... kill resumed>) = 0 [pid 5838] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5838, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=3 /* 0.03 s */} --- 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 [ 123.096333][ T30] audit: type=1800 audit(1747667328.234:2): pid=5838 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed comm="syz-executor621" name="file2" dev="loop0" ino=6 res=0 errno=0 getdents64(3, 0x555555a156f0 /* 4 entries */, 32768) = 112 [ 286.542320][ T31] INFO: task syz-executor621:5837 blocked for more than 143 seconds. [ 286.550518][ T31] Not tainted 6.15.0-rc7-syzkaller #0 [ 286.556771][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.565686][ T31] task:syz-executor621 state:D stack:25272 pid:5837 tgid:5837 ppid:5834 task_flags:0x400100 flags:0x00004002 [ 286.578231][ T31] Call Trace: [ 286.581624][ T31] [ 286.584583][ T31] __schedule+0x168f/0x4c70 [ 286.589137][ T31] ? schedule+0x165/0x360 [ 286.593604][ T31] ? __lock_acquire+0xaac/0xd20 [ 286.598538][ T31] ? __pfx___schedule+0x10/0x10 [ 286.603517][ T31] ? schedule+0x91/0x360 [ 286.607799][ T31] schedule+0x165/0x360 [ 286.612034][ T31] io_schedule+0x81/0xe0 [ 286.616309][ T31] folio_wait_bit_common+0x6b0/0xb90 [ 286.621690][ T31] ? __pfx_folio_wait_bit_common+0x10/0x10 [ 286.627570][ T31] ? __pfx_wake_page_function+0x10/0x10 [ 286.633797][ T31] ? folios_put_refs+0x559/0x640 [ 286.638771][ T31] ? __pfx_find_lock_entries+0x10/0x10 [ 286.644325][ T31] __filemap_get_folio+0x139/0xaf0 [ 286.649507][ T31] truncate_inode_pages_range+0x3ed/0xda0 [ 286.655327][ T31] ? evict+0x847/0x9c0 [ 286.659512][ T31] ? evict_inodes+0x636/0x6c0 [ 286.664271][ T31] ? generic_shutdown_super+0x9a/0x2c0 [ 286.669820][ T31] ? kill_block_super+0x44/0x90 [ 286.675062][ T31] ? deactivate_locked_super+0xbc/0x130 [ 286.680676][ T31] ? __pfx_truncate_inode_pages_range+0x10/0x10 [ 286.687009][ T31] ? syscall_exit_to_user_mode+0x12/0x120 [ 286.692860][ T31] ? __lock_acquire+0xaac/0xd20 [ 286.697749][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.703000][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.708239][ T31] evict+0x517/0x9c0 [ 286.712207][ T31] ? __pfx_evict+0x10/0x10 [ 286.716662][ T31] ? do_raw_spin_unlock+0x122/0x240 [ 286.721937][ T31] evict_inodes+0x636/0x6c0 [ 286.726465][ T31] ? __pfx_evict_inodes+0x10/0x10 [ 286.731563][ T31] generic_shutdown_super+0x9a/0x2c0 [ 286.736890][ T31] kill_block_super+0x44/0x90 [ 286.741643][ T31] deactivate_locked_super+0xbc/0x130 [ 286.747046][ T31] cleanup_mnt+0x425/0x4c0 [ 286.751585][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.756824][ T31] task_work_run+0x1d4/0x260 [ 286.761487][ T31] ? __pfx_task_work_run+0x10/0x10 [ 286.766633][ T31] ? path_umount+0x249/0xf70 [ 286.771289][ T31] ptrace_notify+0x281/0x2c0 [ 286.775914][ T31] ? __pfx_ptrace_notify+0x10/0x10 [ 286.781100][ T31] ? __pfx_path_umount+0x10/0x10 [ 286.786071][ T31] ? user_path_at+0x44/0x60 [ 286.790637][ T31] syscall_exit_work+0xc2/0x1d0 [ 286.795554][ T31] syscall_exit_to_user_mode_prepare+0x6f/0xe0 [ 286.801826][ T31] syscall_exit_to_user_mode+0x12/0x120 [ 286.807404][ T31] do_syscall_64+0x103/0x210 [ 286.812094][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.816998][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.822973][ T31] RIP: 0033:0x7efd25bcc447 [ 286.827430][ T31] RSP: 002b:00007ffe9fa2a2a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 286.836022][ T31] RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007efd25bcc447 [ 286.844084][ T31] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe9fa2a360 [ 286.852161][ T31] RBP: 00007ffe9fa2a360 R08: 0000000000000000 R09: 0000000000000000 [ 286.860166][ T31] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffe9fa2b3d0 [ 286.868297][ T31] R13: 0000555555a156c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 286.876365][ T31] [ 286.879401][ T31] [ 286.879401][ T31] Showing all locks held in the system: [ 286.887173][ T31] 1 lock held by khungtaskd/31: [ 286.892077][ T31] #0: ffffffff8df3dee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.902071][ T31] 2 locks held by getty/5581: [ 286.906765][ T31] #0: ffff88814d2c40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.916702][ T31] #1: ffffc900036d32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.926979][ T31] 1 lock held by syz-executor621/5837: [ 286.932494][ T31] #0: ffff888034d620e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 [ 286.942813][ T31] [ 286.945155][ T31] ============================================= [ 286.945155][ T31] [ 286.953630][ T31] NMI backtrace for cpu 0 [ 286.953653][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) [ 286.953675][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.953687][ T31] Call Trace: [ 286.953698][ T31] [ 286.953707][ T31] dump_stack_lvl+0x189/0x250 [ 286.953734][ T31] ? __wake_up_klogd+0xd9/0x110 [ 286.953755][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.953780][ T31] ? __pfx__printk+0x10/0x10 [ 286.953821][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.953843][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.953860][ T31] ? _printk+0xcf/0x120 [ 286.953893][ T31] ? __pfx__printk+0x10/0x10 [ 286.953924][ T31] ? debug_show_all_locks+0x2e/0x180 [ 286.953947][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.953967][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.953990][ T31] watchdog+0xfee/0x1030 [ 286.954017][ T31] ? watchdog+0x1de/0x1030 [ 286.954048][ T31] kthread+0x711/0x8a0 [ 286.954073][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.954091][ T31] ? __pfx_kthread+0x10/0x10 [ 286.954110][ T31] ? __pfx_kthread+0x10/0x10 [ 286.954126][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.954144][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.954164][ T31] ? __pfx_kthread+0x10/0x10 [ 286.954180][ T31] ret_from_fork+0x4b/0x80 [ 286.954195][ T31] ? __pfx_kthread+0x10/0x10 [ 286.954212][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.954248][ T31] [ 286.954257][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.104738][ C1] NMI backtrace for cpu 1 [ 287.104755][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) [ 287.104774][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.104784][ C1] RIP: 0010:trace_hardirqs_on_prepare+0x0/0x30 [ 287.104809][ C1] Code: 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 31 09 88 09 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 d5 38 ac 10 85 c0 74 14 48 8b 3c 24 e8 28 00 [ 287.104844][ C1] RSP: 0018:ffffc90000197d28 EFLAGS: 00000002 [ 287.104860][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: de9a0e68802f8900 [ 287.104871][ C1] RDX: 0000000000010000 RSI: 0000000000000001 RDI: ffffc90000197d38 [ 287.104881][ C1] RBP: 0000000000000000 R08: ffffffff8f7e0977 R09: 1ffffffff1efc12e [ 287.104893][ C1] R10: dffffc0000000000 R11: fffffbfff1efc12f R12: 0000000000000000 [ 287.104904][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 287.104914][ C1] FS: 0000000000000000(0000) GS:ffff8881261f6000(0000) knlGS:0000000000000000 [ 287.104927][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.104938][ C1] CR2: 000056502067b660 CR3: 000000000dd38000 CR4: 00000000003526f0 [ 287.104953][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.104962][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.104973][ C1] Call Trace: [ 287.104979][ C1] [ 287.104985][ C1] irqentry_exit+0x55/0x90 [ 287.105007][ C1] asm_sysvec_call_function_single+0x1a/0x20 [ 287.105025][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 287.105045][ C1] Code: 43 d4 02 00 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 63 9f 18 00 f3 0f 1e fa fb f4 18 d4 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 [ 287.105058][ C1] RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6 [ 287.105071][ C1] RAX: de9a0e68802f8900 RBX: ffffffff81977028 RCX: de9a0e68802f8900 [ 287.105083][ C1] RDX: 0000000000000001 RSI: ffffffff8d73a842 RDI: ffffffff8bc11fc0 [ 287.105094][ C1] RBP: ffffc90000197f20 R08: ffff8880b8932b5b R09: 1ffff1101712656b [ 287.105107][ C1] R10: dffffc0000000000 R11: ffffed101712656c R12: ffffffff8f7e0970 [ 287.105119][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff110038dcb40 [ 287.105132][ C1] ? do_idle+0x1e8/0x510 [ 287.105163][ C1] default_idle+0x13/0x20 [ 287.105185][ C1] default_idle_call+0x74/0xb0 [ 287.105208][ C1] do_idle+0x1e8/0x510 [ 287.105236][ C1] ? __pfx_do_idle+0x10/0x10 [ 287.105259][ C1] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 287.105278][ C1] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.105298][ C1] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 287.105316][ C1] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 287.105339][ C1] cpu_startup_entry+0x44/0x60 [ 287.105364][ C1] start_secondary+0x101/0x110 [ 287.105390][ C1] common_startup_64+0x13e/0x147 [ 287.105420][ C1] [ 287.106049][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.106072][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) [ 287.106098][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.106112][ T31] Call Trace: [ 287.106123][ T31] [ 287.106134][ T31] dump_stack_lvl+0x99/0x250 [ 287.106169][ T31] ? __asan_memcpy+0x40/0x70 [ 287.106264][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.106294][ T31] ? __pfx__printk+0x10/0x10 [ 287.106340][ T31] panic+0x2db/0x790 [ 287.106375][ T31] ? __pfx_panic+0x10/0x10 [ 287.106404][ T31] ? nmi_backtrace_stall_check+0x433/0x440 [ 287.106435][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.106460][ T31] ? nmi_trigger_cpumask_backtrace+0x2b6/0x300 [ 287.106493][ T31] watchdog+0x102d/0x1030 [ 287.106535][ T31] ? watchdog+0x1de/0x1030 [ 287.106571][ T31] kthread+0x711/0x8a0 [ 287.106601][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.106627][ T31] ? __pfx_kthread+0x10/0x10 [ 287.106653][ T31] ? __pfx_kthread+0x10/0x10 [ 287.106676][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.106701][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.106729][ T31] ? __pfx_kthread+0x10/0x10 [ 287.106752][ T31] ret_from_fork+0x4b/0x80 [ 287.106773][ T31] ? __pfx_kthread+0x10/0x10 [ 287.106798][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.106847][ T31] [ 287.527690][ T31] Kernel Offset: disabled [ 287.532021][ T31] Rebooting in 86400 seconds..