./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor668708105 <...> Warning: Permanently added '10.128.1.125' (ED25519) to the list of known hosts. execve("./syz-executor668708105", ["./syz-executor668708105"], 0x7fffbd7db710 /* 10 vars */) = 0 brk(NULL) = 0x555579032000 brk(0x555579032d40) = 0x555579032d40 arch_prctl(ARCH_SET_FS, 0x5555790323c0) = 0 set_tid_address(0x555579032690) = 5848 set_robust_list(0x5555790326a0, 24) = 0 rseq(0x555579032ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor668708105", 4096) = 27 getrandom("\x46\x95\x7a\x65\x05\xe5\xaa\x2d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555579032d40 brk(0x555579053d40) = 0x555579053d40 brk(0x555579054000) = 0x555579054000 mprotect(0x7f8f14001000, 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=0x555579032690) = 5849 ./strace-static-x86_64: Process 5849 attached [pid 5849] set_robust_list(0x5555790326a0, 24) = 0 [pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5849] setpgid(0, 0) = 0 [pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5849] write(3, "1000", 4) = 4 [pid 5849] close(3) = 0 [pid 5849] write(1, "executing program\n", 18executing program ) = 18 [pid 5849] futex(0x7f8f1400730c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5849] rt_sigaction(SIGRT_1, {sa_handler=0x7f8f13fa3220, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f8f13f948a0}, NULL, 8) = 0 [pid 5849] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5849] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8f13f16000 [pid 5849] mprotect(0x7f8f13f17000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5849] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5849] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8f13f36990, parent_tid=0x7f8f13f36990, exit_signal=0, stack=0x7f8f13f16000, stack_size=0x20300, tls=0x7f8f13f366c0}./strace-static-x86_64: Process 5850 attached [pid 5850] rseq(0x7f8f13f36fe0, 0x20, 0, 0x53053053 [pid 5849] <... clone3 resumed> => {parent_tid=[5850]}, 88) = 5850 [pid 5850] <... rseq resumed>) = 0 [pid 5849] rt_sigprocmask(SIG_SETMASK, [], [pid 5850] set_robust_list(0x7f8f13f369a0, 24) = 0 [pid 5849] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5850] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5849] futex(0x7f8f14007308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5850] mremap(0x2000003c9000, 8192, 8192, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x2000001de000 [pid 5849] <... futex resumed>) = 0 [pid 5848] kill(-5849, SIGKILL) = 0 [pid 5848] kill(5849, SIGKILL) = 0 [pid 5848] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5848] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5848] getdents64(3, 0x555579033730 /* 2 entries */, 32768) = 48 [pid 5848] getdents64(3, 0x555579033730 /* 0 entries */, 32768) = 0 [pid 5848] close(3) = 0 [ 92.116985][ T981] cfg80211: failed to load regulatory.db [ 286.678405][ T31] INFO: task syz-executor668:5849 blocked for more than 143 seconds. [ 286.686830][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.693974][ T31] Blocked by coredump. [ 286.699160][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.707995][ T31] task:syz-executor668 state:D stack:26920 pid:5849 tgid:5849 ppid:5848 task_flags:0x40044c flags:0x00004006 [ 286.720047][ T31] Call Trace: [ 286.723355][ T31] [ 286.726881][ T31] __schedule+0x1737/0x4d30 [ 286.731479][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.736423][ T31] ? schedule+0x165/0x360 [ 286.740803][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.746248][ T31] ? __pfx___schedule+0x10/0x10 [ 286.751258][ T31] ? schedule+0x91/0x360 [ 286.755590][ T31] schedule+0x165/0x360 [ 286.759783][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.765420][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.770998][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.776807][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.782901][ T31] ? exit_mm+0xcc/0x2c0 [ 286.787183][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.792090][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.797479][ T31] down_read+0x98/0x2e0 [ 286.801682][ T31] exit_mm+0xcc/0x2c0 [ 286.805908][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.810538][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.815511][ T31] do_exit+0x648/0x2300 [ 286.819711][ T31] ? do_raw_spin_lock+0x121/0x290 [ 286.825008][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.829642][ T31] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 286.835648][ T31] do_group_exit+0x21c/0x2d0 [ 286.840272][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.845699][ T31] get_signal+0x1286/0x1340 [ 286.850313][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 286.856495][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.861304][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 286.867607][ T31] ? __bad_area_nosemaphore+0x3fb/0x780 [ 286.873201][ T31] ? local_irq_enable_exit_to_user+0x5/0x10 [ 286.879199][ T31] irqentry_exit_to_user_mode+0x81/0x120 [ 286.885143][ T31] exc_page_fault+0x9f/0xf0 [ 286.889683][ T31] asm_exc_page_fault+0x26/0x30 [ 286.894598][ T31] RIP: 0033:0x7f8f13f3da90 [ 286.899031][ T31] RSP: 002b:00007ffedf162e98 EFLAGS: 00010206 [ 286.905217][ T31] RAX: 00007f8f13f3da90 RBX: 00007f8f14007300 RCX: 00007f8f13f7d2e9 [ 286.913261][ T31] RDX: 00000000000f4240 RSI: 00007ffedf162ee0 RDI: 0000000000000001 [ 286.921368][ T31] RBP: 00007f8f14007300 R08: 00007ffedf162dc7 R09: 0000000000000000 [ 286.929448][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8f1400730c [ 286.937503][ T31] R13: 00007ffedf162ec8 R14: 00007f8f1400730c R15: 00007f8f13f48de0 [ 286.945612][ T31] [ 286.948735][ T31] [ 286.948735][ T31] Showing all locks held in the system: [ 286.956707][ T31] 1 lock held by khungtaskd/31: [ 286.961589][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.971868][ T31] 2 locks held by kworker/u8:6/1117: [ 286.977481][ T31] #0: ffff8880b8639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 286.987526][ T31] #1: ffff8880b8624008 (per_cpu_ptr(&psi_seq, cpu)){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 [ 286.998389][ T31] 2 locks held by getty/5607: [ 287.003089][ T31] #0: ffff888030aa10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.012975][ T31] #1: ffffc9000332e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 287.023162][ T31] 1 lock held by syz-executor668/5849: [ 287.028791][ T31] #0: ffff888079692220 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.037664][ T31] 1 lock held by syz-executor668/5850: [ 287.043315][ T31] [ 287.045708][ T31] ============================================= [ 287.045708][ T31] [ 287.054132][ T31] NMI backtrace for cpu 0 [ 287.054149][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.054169][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.054179][ T31] Call Trace: [ 287.054187][ T31] [ 287.054195][ T31] dump_stack_lvl+0x189/0x250 [ 287.054227][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.054259][ T31] ? __pfx__printk+0x10/0x10 [ 287.054295][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 287.054321][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.054344][ T31] ? __pfx__printk+0x10/0x10 [ 287.054372][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.054395][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 287.054419][ T31] watchdog+0xf93/0xfe0 [ 287.054444][ T31] ? watchdog+0x1de/0xfe0 [ 287.054467][ T31] kthread+0x70e/0x8a0 [ 287.054499][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.054516][ T31] ? __pfx_kthread+0x10/0x10 [ 287.054550][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.054573][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.054595][ T31] ? __pfx_kthread+0x10/0x10 [ 287.054621][ T31] ret_from_fork+0x3f9/0x770 [ 287.054645][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.054672][ T31] ? __switch_to_asm+0x39/0x70 [ 287.054686][ T31] ? __switch_to_asm+0x33/0x70 [ 287.054700][ T31] ? __pfx_kthread+0x10/0x10 [ 287.054725][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.054757][ T31] [ 287.197205][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.202460][ C1] NMI backtrace for cpu 1 [ 287.202517][ C1] CPU: 1 UID: 0 PID: 5850 Comm: syz-executor668 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.202536][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.202545][ C1] RIP: 0010:lock_is_held_type+0x123/0x190 [ 287.202570][ C1] Code: e8 92 16 00 00 b8 ff ff ff ff 65 0f c1 05 f5 16 68 07 83 f8 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 <75> 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 b9 d6 67 07 48 3b [ 287.202582][ C1] RSP: 0018:ffffc90004037238 EFLAGS: 00000046 [ 287.202597][ C1] RAX: 0000000000000001 RBX: 0000000000000001 RCX: b10f2752f8637d00 [ 287.202607][ C1] RDX: 0000000000000000 RSI: ffffffff8de5b067 RDI: ffffffff8c04d400 [ 287.202617][ C1] RBP: 00000000ffffffff R08: ffff888027d90000 R09: 0000000000000003 [ 287.202628][ C1] R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000246 [ 287.202637][ C1] R13: ffff888027d90000 R14: ffff888079692220 R15: 0000000000000000 [ 287.202647][ C1] FS: 00007f8f13f366c0(0000) GS:ffff8881258ab000(0000) knlGS:0000000000000000 [ 287.202660][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.202670][ C1] CR2: 0000561407022168 CR3: 0000000078fd0000 CR4: 00000000003526f0 [ 287.202686][ C1] Call Trace: [ 287.202693][ C1] [ 287.202702][ C1] mt_validate+0x3dfc/0x4380 [ 287.202730][ C1] ? __pfx_mt_validate+0x10/0x10 [ 287.202763][ C1] validate_mm+0xb6/0x4b0 [ 287.202786][ C1] ? __pfx_validate_mm+0x10/0x10 [ 287.202813][ C1] vma_link+0x366/0x450 [ 287.202834][ C1] ? __pfx_vma_link+0x10/0x10 [ 287.202856][ C1] ? anon_vma_clone+0x49b/0x4f0 [ 287.202872][ C1] ? anon_vma_name+0x87/0xf0 [ 287.202888][ C1] ? vm_area_dup+0x4f5/0x680 [ 287.202907][ C1] copy_vma+0x70c/0x940 [ 287.202930][ C1] ? __pfx_copy_vma+0x10/0x10 [ 287.202953][ C1] ? __pfx_move_page_tables+0x10/0x10 [ 287.202984][ C1] move_vma+0x81f/0x1840 [ 287.203003][ C1] ? __lock_acquire+0xab9/0xd20 [ 287.203027][ C1] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 287.203046][ C1] ? __pfx_move_vma+0x10/0x10 [ 287.203067][ C1] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 287.203091][ C1] ? cap_mmap_addr+0xb0/0x100 [ 287.203110][ C1] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.203124][ C1] ? security_mmap_addr+0x71/0x270 [ 287.203145][ C1] mremap_to+0x6d6/0x7a0 [ 287.203168][ C1] ? __pfx_mremap_to+0x10/0x10 [ 287.203189][ C1] ? check_prep_vma+0x740/0xae0 [ 287.203213][ C1] __se_sys_mremap+0xa0b/0xef0 [ 287.203242][ C1] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.203264][ C1] ? __pfx_ptrace_notify+0x10/0x10 [ 287.203287][ C1] ? __x64_sys_mremap+0x20/0xc0 [ 287.203307][ C1] do_syscall_64+0xfa/0x3b0 [ 287.203329][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.203343][ C1] ? __switch_to_asm+0x39/0x70 [ 287.203356][ C1] ? clear_bhb_loop+0x60/0xb0 [ 287.203373][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.203386][ C1] RIP: 0033:0x7f8f13f7d2e9 [ 287.203400][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 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 b0 ff ff ff f7 d8 64 89 01 48 [ 287.203411][ C1] RSP: 002b:00007f8f13f36238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.203443][ C1] RAX: ffffffffffffffda RBX: 00007f8f14007308 RCX: 00007f8f13f7d2e9 [ 287.203454][ C1] RDX: 0000000000002000 RSI: 0000000000002000 RDI: 00002000003c9000 [ 287.203464][ C1] RBP: 00007f8f14007300 R08: 00002000001de000 R09: 00007f8f13f366c0 [ 287.203474][ C1] R10: 0000000000000007 R11: 0000000000000246 R12: 00002000003c9000 [ 287.203491][ C1] R13: 0000000000000000 R14: 00007ffedf162ce0 R15: 00007ffedf162dc8 [ 287.203508][ C1] [ 287.203515][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.055 msecs [ 287.574997][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.581888][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.593198][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.603268][ T31] Call Trace: [ 287.606557][ T31] [ 287.609492][ T31] dump_stack_lvl+0x99/0x250 [ 287.614095][ T31] ? __asan_memcpy+0x40/0x70 [ 287.618701][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.623909][ T31] ? __pfx__printk+0x10/0x10 [ 287.628608][ T31] vpanic+0x281/0x750 [ 287.632600][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.637130][ T31] ? preempt_schedule+0xae/0xc0 [ 287.642076][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.647557][ T31] panic+0xb9/0xc0 [ 287.651299][ T31] ? __pfx_panic+0x10/0x10 [ 287.655812][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.661197][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.667359][ T31] watchdog+0xfd2/0xfe0 [ 287.671524][ T31] ? watchdog+0x1de/0xfe0 [ 287.675872][ T31] kthread+0x70e/0x8a0 [ 287.679962][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.684642][ T31] ? __pfx_kthread+0x10/0x10 [ 287.689341][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.694805][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.700011][ T31] ? __pfx_kthread+0x10/0x10 [ 287.704614][ T31] ret_from_fork+0x3f9/0x770 [ 287.709217][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.714366][ T31] ? __switch_to_asm+0x39/0x70 [ 287.719127][ T31] ? __switch_to_asm+0x33/0x70 [ 287.723980][ T31] ? __pfx_kthread+0x10/0x10 [ 287.728584][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.733361][ T31] [ 287.736802][ T31] Kernel Offset: disabled [ 287.741225][ T31] Rebooting in 86400 seconds..