./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2014242650 <...> Warning: Permanently added '10.128.0.116' (ED25519) to the list of known hosts. execve("./syz-executor2014242650", ["./syz-executor2014242650"], 0x7ffcfee1dc60 /* 10 vars */) = 0 brk(NULL) = 0x555570ea4000 brk(0x555570ea4d40) = 0x555570ea4d40 arch_prctl(ARCH_SET_FS, 0x555570ea43c0) = 0 set_tid_address(0x555570ea4690) = 5871 set_robust_list(0x555570ea46a0, 24) = 0 rseq(0x555570ea4ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2014242650", 4096) = 28 getrandom("\x68\xe6\x40\xa1\x3d\x7e\xcd\x86", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555570ea4d40 brk(0x555570ec5d40) = 0x555570ec5d40 brk(0x555570ec6000) = 0x555570ec6000 mprotect(0x7fa40c11e000, 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./strace-static-x86_64: Process 5872 attached [pid 5872] set_robust_list(0x555570ea46a0, 24 [pid 5871] <... clone resumed>, child_tidptr=0x555570ea4690) = 5872 [pid 5872] <... set_robust_list resumed>) = 0 [pid 5872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5872] setpgid(0, 0) = 0 [pid 5872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5872] write(3, "1000", 4) = 4 [pid 5872] close(3) = 0 [pid 5872] write(1, "executing program\n", 18executing program ) = 18 [pid 5872] futex(0x7fa40c12430c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5872] rt_sigaction(SIGRT_1, {sa_handler=0x7fa40c0c01e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa40c0b1860}, NULL, 8) = 0 [pid 5872] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fa40c033000 [pid 5872] mprotect(0x7fa40c034000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5872] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5872] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fa40c053990, parent_tid=0x7fa40c053990, exit_signal=0, stack=0x7fa40c033000, stack_size=0x20300, tls=0x7fa40c0536c0}./strace-static-x86_64: Process 5873 attached [pid 5873] rseq(0x7fa40c053fe0, 0x20, 0, 0x53053053) = 0 [pid 5873] set_robust_list(0x7fa40c0539a0, 24 [pid 5872] <... clone3 resumed> => {parent_tid=[5873]}, 88) = 5873 [pid 5873] <... set_robust_list resumed>) = 0 [pid 5872] rt_sigprocmask(SIG_SETMASK, [], [pid 5873] rt_sigprocmask(SIG_SETMASK, [], [pid 5872] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5873] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5872] futex(0x7fa40c124308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5873] mremap(0x2000003c9000, 8192, 8192, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x2000001de000 [pid 5872] <... futex resumed>) = 0 [pid 5871] kill(-5872, SIGKILL) = 0 [pid 5871] kill(5872, SIGKILL) = 0 [pid 5871] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5871] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5871] getdents64(3, 0x555570ea5730 /* 2 entries */, 32768) = 48 [pid 5871] getdents64(3, 0x555570ea5730 /* 0 entries */, 32768) = 0 [pid 5871] close(3) = 0 [ 429.955197][ T31] INFO: task syz-executor201:5872 blocked for more than 143 seconds. [ 429.963334][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 429.971444][ T31] Blocked by coredump. [ 429.976455][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.985461][ T31] task:syz-executor201 state:D stack:26920 pid:5872 tgid:5872 ppid:5871 task_flags:0x40044c flags:0x00004006 [ 429.998320][ T31] Call Trace: [ 430.001642][ T31] [ 430.004605][ T31] __schedule+0x1737/0x4d30 [ 430.009898][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.014800][ T31] ? schedule+0x165/0x360 [ 430.020189][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.025320][ T31] ? __pfx___schedule+0x10/0x10 [ 430.030224][ T31] ? schedule+0x91/0x360 [ 430.034498][ T31] schedule+0x165/0x360 [ 430.039217][ T31] schedule_preempt_disabled+0x13/0x30 [ 430.044707][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 430.050935][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 430.057042][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 430.063147][ T31] ? exit_mm+0xcc/0x2c0 [ 430.067756][ T31] ? __pfx_mm_release+0x10/0x10 [ 430.072702][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.078409][ T31] down_read+0x98/0x2e0 [ 430.082598][ T31] exit_mm+0xcc/0x2c0 [ 430.087040][ T31] ? __pfx_exit_mm+0x10/0x10 [ 430.091675][ T31] ? rcu_is_watching+0x15/0xb0 [ 430.096955][ T31] do_exit+0x648/0x2300 [ 430.101205][ T31] ? do_raw_spin_lock+0x121/0x290 [ 430.106718][ T31] ? __pfx_do_exit+0x10/0x10 [ 430.111339][ T31] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 430.117913][ T31] do_group_exit+0x21c/0x2d0 [ 430.122626][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.128786][ T31] get_signal+0x1286/0x1340 [ 430.133352][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 430.139399][ T31] ? rcu_is_watching+0x15/0xb0 [ 430.144208][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 430.150864][ T31] ? __bad_area_nosemaphore+0x3fb/0x780 [ 430.156878][ T31] ? local_irq_enable_exit_to_user+0x5/0x10 [ 430.162897][ T31] irqentry_exit_to_user_mode+0x81/0x120 [ 430.169018][ T31] exc_page_fault+0x9f/0xf0 [ 430.173568][ T31] asm_exc_page_fault+0x26/0x30 [ 430.178950][ T31] RIP: 0033:0x7fa40c05aa90 [ 430.183395][ T31] RSP: 002b:00007ffe1ee66b38 EFLAGS: 00010202 [ 430.189943][ T31] RAX: 00007fa40c05aa90 RBX: 0000000000000000 RCX: 00007fa40c09a2a9 [ 430.198355][ T31] RDX: 00000000000f4240 RSI: 00007ffe1ee66b90 RDI: 0000000000000001 [ 430.206628][ T31] RBP: 00007fa40c12430c R08: 00007fa40c12430c R09: 0000000000000000 [ 430.214639][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000064 [ 430.223154][ T31] R13: 00007ffe1ee66bd0 R14: 00007fa40c065de0 R15: 00007fa40c124300 [ 430.231494][ T31] [ 430.234587][ T31] [ 430.234587][ T31] Showing all locks held in the system: [ 430.243406][ T31] 1 lock held by khungtaskd/31: [ 430.248559][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 430.258844][ T31] 2 locks held by getty/5605: [ 430.263559][ T31] #0: ffff888033c9e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.273965][ T31] #1: ffffc900036ce2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 430.284637][ T31] 1 lock held by syz-executor201/5872: [ 430.290387][ T31] #0: ffff88802fec6d60 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 430.299681][ T31] 1 lock held by syz-executor201/5873: [ 430.305493][ T31] [ 430.307843][ T31] ============================================= [ 430.307843][ T31] [ 430.316787][ T31] NMI backtrace for cpu 1 [ 430.316805][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.316825][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.316835][ T31] Call Trace: [ 430.316843][ T31] [ 430.316850][ T31] dump_stack_lvl+0x189/0x250 [ 430.316884][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.316909][ T31] ? __pfx__printk+0x10/0x10 [ 430.316948][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 430.316974][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.316999][ T31] ? __pfx__printk+0x10/0x10 [ 430.317029][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.317052][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 430.317078][ T31] watchdog+0xf93/0xfe0 [ 430.317103][ T31] ? watchdog+0x1de/0xfe0 [ 430.317128][ T31] kthread+0x70e/0x8a0 [ 430.317158][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.317176][ T31] ? __pfx_kthread+0x10/0x10 [ 430.317203][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.317226][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.317250][ T31] ? __pfx_kthread+0x10/0x10 [ 430.317276][ T31] ret_from_fork+0x3f9/0x770 [ 430.317301][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.317330][ T31] ? __switch_to_asm+0x39/0x70 [ 430.317345][ T31] ? __switch_to_asm+0x33/0x70 [ 430.317359][ T31] ? __pfx_kthread+0x10/0x10 [ 430.317384][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.317417][ T31] [ 430.317424][ T31] Sending NMI from CPU 1 to CPUs 0: [ 430.465530][ C0] NMI backtrace for cpu 0 [ 430.465548][ C0] CPU: 0 UID: 0 PID: 5873 Comm: syz-executor201 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.465567][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.465575][ C0] RIP: 0010:__sanitizer_cov_trace_switch+0x82/0x130 [ 430.465598][ C0] Code: 00 00 b9 01 00 00 00 48 85 c0 0f 84 b4 00 00 00 41 57 41 56 41 54 53 48 8b 54 24 20 65 4c 8b 04 25 08 50 e7 92 45 31 c9 eb 08 <49> ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d 09 49 27 11 41 [ 430.465611][ C0] RSP: 0018:ffffc900041c7258 EFLAGS: 00000293 [ 430.465626][ C0] RAX: 0000000000000004 RBX: ffffffff8cdac6a1 RCX: 0000000000000005 [ 430.465637][ C0] RDX: ffffffff8b7841c8 RSI: ffffffff8fca98a0 RDI: 0000000000000001 [ 430.465654][ C0] RBP: ffffc900041c7450 R08: ffff888078c01e00 R09: 0000000000000000 [ 430.465664][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807303f200 [ 430.465674][ C0] R13: 0000000000000000 R14: 00001fbd6871dfff R15: 0000000000000001 [ 430.465683][ C0] FS: 00007fa40c0536c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 430.465696][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.465707][ C0] CR2: 00007ff56314f040 CR3: 000000007e44e000 CR4: 00000000003526f0 [ 430.465722][ C0] Call Trace: [ 430.465728][ C0] [ 430.465736][ C0] mt_validate+0x23d8/0x4380 [ 430.465772][ C0] ? __pfx_mt_validate+0x10/0x10 [ 430.465791][ C0] ? __kasan_slab_alloc+0x6c/0x80 [ 430.465809][ C0] ? kmem_cache_alloc_bulk_noprof+0x4fd/0x790 [ 430.465829][ C0] ? kmem_cache_alloc_bulk_noprof+0xfa/0x790 [ 430.465853][ C0] validate_mm+0xb6/0x4b0 [ 430.465875][ C0] ? __pfx_validate_mm+0x10/0x10 [ 430.465902][ C0] vma_link+0x366/0x450 [ 430.465923][ C0] ? __pfx_vma_link+0x10/0x10 [ 430.465945][ C0] ? anon_vma_clone+0x49b/0x4f0 [ 430.465961][ C0] ? anon_vma_name+0x87/0xf0 [ 430.465977][ C0] ? vm_area_dup+0x4f5/0x680 [ 430.465996][ C0] copy_vma+0x70c/0x940 [ 430.466020][ C0] ? __pfx_copy_vma+0x10/0x10 [ 430.466043][ C0] ? __pfx_move_page_tables+0x10/0x10 [ 430.466074][ C0] move_vma+0x81f/0x1840 [ 430.466093][ C0] ? __lock_acquire+0xab9/0xd20 [ 430.466117][ C0] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 430.466136][ C0] ? __pfx_move_vma+0x10/0x10 [ 430.466158][ C0] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 430.466181][ C0] ? cap_mmap_addr+0xb0/0x100 [ 430.466199][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 430.466214][ C0] ? security_mmap_addr+0x71/0x270 [ 430.466235][ C0] mremap_to+0x6d6/0x7a0 [ 430.466258][ C0] ? __pfx_mremap_to+0x10/0x10 [ 430.466279][ C0] ? check_prep_vma+0x740/0xae0 [ 430.466304][ C0] __se_sys_mremap+0xa0b/0xef0 [ 430.466332][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 430.466355][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 430.466378][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 430.466398][ C0] do_syscall_64+0xfa/0x3b0 [ 430.466419][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.466434][ C0] ? __switch_to_asm+0x39/0x70 [ 430.466447][ C0] ? clear_bhb_loop+0x60/0xb0 [ 430.466463][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.466477][ C0] RIP: 0033:0x7fa40c09a2a9 [ 430.466490][ C0] 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 [ 430.466501][ C0] RSP: 002b:00007fa40c053238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 430.466516][ C0] RAX: ffffffffffffffda RBX: 00007fa40c124308 RCX: 00007fa40c09a2a9 [ 430.466526][ C0] RDX: 0000000000002000 RSI: 0000000000002000 RDI: 00002000003c9000 [ 430.466535][ C0] RBP: 00007fa40c124300 R08: 00002000001de000 R09: 00007fa40c0536c0 [ 430.466545][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 00002000003c9000 [ 430.466554][ C0] R13: 0000000000000000 R14: 00007ffe1ee66980 R15: 00007ffe1ee66a68 [ 430.466572][ C0] [ 430.466579][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.049 msecs [ 430.474605][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.870014][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.881659][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.892090][ T31] Call Trace: [ 430.895389][ T31] [ 430.898500][ T31] dump_stack_lvl+0x99/0x250 [ 430.903104][ T31] ? __asan_memcpy+0x40/0x70 [ 430.907809][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.913097][ T31] ? __pfx__printk+0x10/0x10 [ 430.917789][ T31] vpanic+0x281/0x750 [ 430.921866][ T31] ? __pfx_vpanic+0x10/0x10 [ 430.926385][ T31] ? preempt_schedule+0xae/0xc0 [ 430.931242][ T31] ? preempt_schedule_common+0x83/0xd0 [ 430.936756][ T31] panic+0xb9/0xc0 [ 430.940509][ T31] ? __pfx_panic+0x10/0x10 [ 430.944941][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 430.950931][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 430.957180][ T31] watchdog+0xfd2/0xfe0 [ 430.961348][ T31] ? watchdog+0x1de/0xfe0 [ 430.965684][ T31] kthread+0x70e/0x8a0 [ 430.969767][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.974440][ T31] ? __pfx_kthread+0x10/0x10 [ 430.979038][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.984241][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.989440][ T31] ? __pfx_kthread+0x10/0x10 [ 430.994037][ T31] ret_from_fork+0x3f9/0x770 [ 430.999012][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 431.004164][ T31] ? __switch_to_asm+0x39/0x70 [ 431.008930][ T31] ? __switch_to_asm+0x33/0x70 [ 431.013701][ T31] ? __pfx_kthread+0x10/0x10 [ 431.018329][ T31] ret_from_fork_asm+0x1a/0x30 [ 431.023625][ T31] [ 431.027045][ T31] Kernel Offset: disabled [ 431.031368][ T31] Rebooting in 86400 seconds..