./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2895842065 <...> Warning: Permanently added '10.128.0.134' (ED25519) to the list of known hosts. execve("./syz-executor2895842065", ["./syz-executor2895842065"], 0x7ffe300f3de0 /* 10 vars */) = 0 brk(NULL) = 0x55558c45e000 brk(0x55558c45ed40) = 0x55558c45ed40 arch_prctl(ARCH_SET_FS, 0x55558c45e3c0) = 0 set_tid_address(0x55558c45e690) = 5870 set_robust_list(0x55558c45e6a0, 24) = 0 rseq(0x55558c45ece0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2895842065", 4096) = 28 getrandom("\x37\x81\x12\xf1\x42\x21\x6c\x89", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558c45ed40 brk(0x55558c47fd40) = 0x55558c47fd40 brk(0x55558c480000) = 0x55558c480000 mprotect(0x7fe8a4cd8000, 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 5871 attached , child_tidptr=0x55558c45e690) = 5871 [pid 5871] set_robust_list(0x55558c45e6a0, 24) = 0 [pid 5871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5871] setpgid(0, 0) = 0 [pid 5871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5871] write(3, "1000", 4) = 4 [pid 5871] close(3) = 0 [pid 5871] write(1, "executing program\n", 18executing program ) = 18 [pid 5871] futex(0x7fe8a4cde30c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5871] rt_sigaction(SIGRT_1, {sa_handler=0x7fe8a4c7a1e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe8a4c6b860}, NULL, 8) = 0 [pid 5871] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5871] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe8a4bed000 [pid 5871] mprotect(0x7fe8a4bee000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5871] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5871] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe8a4c0d990, parent_tid=0x7fe8a4c0d990, exit_signal=0, stack=0x7fe8a4bed000, stack_size=0x20300, tls=0x7fe8a4c0d6c0}./strace-static-x86_64: Process 5872 attached => {parent_tid=[5872]}, 88) = 5872 [pid 5872] rseq(0x7fe8a4c0dfe0, 0x20, 0, 0x53053053 [pid 5871] rt_sigprocmask(SIG_SETMASK, [], [pid 5872] <... rseq resumed>) = 0 [pid 5871] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5872] set_robust_list(0x7fe8a4c0d9a0, 24 [pid 5871] futex(0x7fe8a4cde308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5872] <... set_robust_list resumed>) = 0 [pid 5872] rt_sigprocmask(SIG_SETMASK, [], [pid 5871] <... futex resumed>) = 0 [pid 5872] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5871] futex(0x7fe8a4cde30c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5872] mremap(0x200000000000, 4096, 4096, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000481000 [pid 5871] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5871] exit_group(0) = ? [pid 5870] kill(-5871, SIGKILL) = 0 [pid 5870] kill(5871, SIGKILL) = 0 [pid 5870] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5870] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5870] getdents64(3, 0x55558c45f730 /* 2 entries */, 32768) = 48 [pid 5870] getdents64(3, 0x55558c45f730 /* 0 entries */, 32768) = 0 [pid 5870] close(3) = 0 [ 286.605317][ T31] INFO: task syz-executor289:5871 blocked for more than 143 seconds. [ 286.613616][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.620761][ T31] Blocked by coredump. [ 286.626340][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.635702][ T31] task:syz-executor289 state:D stack:26920 pid:5871 tgid:5871 ppid:5870 task_flags:0x40004c flags:0x00004002 [ 286.648053][ T31] Call Trace: [ 286.651365][ T31] [ 286.655149][ T31] __schedule+0x1737/0x4d30 [ 286.659767][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.664950][ T31] ? schedule+0x165/0x360 [ 286.669335][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.674532][ T31] ? __pfx___schedule+0x10/0x10 [ 286.679448][ T31] ? schedule+0x91/0x360 [ 286.684018][ T31] schedule+0x165/0x360 [ 286.688262][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.694092][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.699679][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.705755][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.711875][ T31] ? exit_mm+0xcc/0x2c0 [ 286.716436][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.721343][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.726893][ T31] down_read+0x98/0x2e0 [ 286.731092][ T31] exit_mm+0xcc/0x2c0 [ 286.735951][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.740607][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.745683][ T31] do_exit+0x648/0x2300 [ 286.749896][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.754854][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.760105][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.765596][ T31] do_group_exit+0x21c/0x2d0 [ 286.770224][ T31] __x64_sys_exit_group+0x3f/0x40 [ 286.775743][ T31] x64_sys_call+0x21f7/0x2200 [ 286.780461][ T31] do_syscall_64+0xfa/0x3b0 [ 286.785292][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.790549][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.797063][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.801788][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.808027][ T31] RIP: 0033:0x7fe8a4c52309 [ 286.812759][ T31] RSP: 002b:00007ffdb5b588b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 286.821208][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe8a4c52309 [ 286.829504][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 286.837767][ T31] RBP: 00007fe8a4cde2b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 286.846583][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe8a4cde2b0 [ 286.854923][ T31] R13: 0000000000000000 R14: 00007fe8a4cdee40 R15: 00007fe8a4c20120 [ 286.863221][ T31] [ 286.866346][ T31] [ 286.866346][ T31] Showing all locks held in the system: [ 286.874619][ T31] 1 lock held by khungtaskd/31: [ 286.879501][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.890221][ T31] 2 locks held by getty/5606: [ 286.895411][ T31] #0: ffff88814dd2e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.905605][ T31] #1: ffffc900036c32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.916099][ T31] 1 lock held by syz-executor289/5871: [ 286.921583][ T31] #0: ffff888031b01760 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 286.930738][ T31] 1 lock held by syz-executor289/5872: [ 286.936574][ T31] [ 286.938919][ T31] ============================================= [ 286.938919][ T31] [ 286.947834][ T31] NMI backtrace for cpu 1 [ 286.947858][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.947881][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 286.947893][ T31] Call Trace: [ 286.947901][ T31] [ 286.947909][ T31] dump_stack_lvl+0x189/0x250 [ 286.947945][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.947973][ T31] ? __pfx__printk+0x10/0x10 [ 286.948014][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.948043][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.948069][ T31] ? __pfx__printk+0x10/0x10 [ 286.948101][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.948127][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.948155][ T31] watchdog+0xf93/0xfe0 [ 286.948181][ T31] ? watchdog+0x1de/0xfe0 [ 286.948208][ T31] kthread+0x70e/0x8a0 [ 286.948240][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.948259][ T31] ? __pfx_kthread+0x10/0x10 [ 286.948289][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.948315][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.948341][ T31] ? __pfx_kthread+0x10/0x10 [ 286.948378][ T31] ret_from_fork+0x3f9/0x770 [ 286.948405][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.948436][ T31] ? __switch_to_asm+0x39/0x70 [ 286.948452][ T31] ? __switch_to_asm+0x33/0x70 [ 286.948468][ T31] ? __pfx_kthread+0x10/0x10 [ 286.948497][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.948531][ T31] [ 286.948538][ T31] Sending NMI from CPU 1 to CPUs 0: [ 287.097275][ C0] NMI backtrace for cpu 0 [ 287.097293][ C0] CPU: 0 UID: 0 PID: 5872 Comm: syz-executor289 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.097314][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.097325][ C0] RIP: 0010:lock_is_held_type+0x11c/0x190 [ 287.097355][ C0] Code: 48 c7 c7 67 b0 e5 8d 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 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b [ 287.097369][ C0] RSP: 0018:ffffc900042f7238 EFLAGS: 00000046 [ 287.097386][ C0] RAX: 0000000000000001 RBX: 0000000000000001 RCX: b0861421f32e2e00 [ 287.097397][ C0] RDX: 0000000000000000 RSI: ffffffff8de5b067 RDI: ffffffff8c04d400 [ 287.097408][ C0] RBP: 00000000ffffffff R08: 0000000000000003 R09: 0000000000000004 [ 287.097418][ C0] R10: dffffc0000000000 R11: fffffbfff34924ec R12: 0000000000000246 [ 287.097430][ C0] R13: ffff88807bad3c00 R14: ffff888031b01760 R15: 0000000000000000 [ 287.097442][ C0] FS: 00007fe8a4c0d6c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 287.097456][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.097467][ C0] CR2: 000055b5ee6c9168 CR3: 0000000030738000 CR4: 00000000003526f0 [ 287.097482][ C0] Call Trace: [ 287.097490][ C0] [ 287.097501][ C0] mt_validate+0x74f/0x4380 [ 287.097534][ C0] ? __pfx_mt_validate+0x10/0x10 [ 287.097575][ C0] validate_mm+0xb6/0x4b0 [ 287.097602][ C0] ? __pfx_validate_mm+0x10/0x10 [ 287.097635][ C0] vma_link+0x366/0x450 [ 287.097660][ C0] ? __pfx_vma_link+0x10/0x10 [ 287.097688][ C0] ? anon_vma_clone+0x49b/0x4f0 [ 287.097707][ C0] ? anon_vma_name+0x87/0xf0 [ 287.097724][ C0] ? vm_area_dup+0x4f5/0x680 [ 287.097748][ C0] copy_vma+0x70c/0x940 [ 287.097777][ C0] ? __pfx_copy_vma+0x10/0x10 [ 287.097800][ C0] ? preempt_schedule_irq+0xde/0x150 [ 287.097826][ C0] ? __pfx_move_page_tables+0x10/0x10 [ 287.097849][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.097886][ C0] move_vma+0x81f/0x1840 [ 287.097909][ C0] ? __lock_acquire+0xab9/0xd20 [ 287.097938][ C0] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 287.097961][ C0] ? __pfx_move_vma+0x10/0x10 [ 287.097987][ C0] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 287.098016][ C0] ? cap_mmap_addr+0xb0/0x100 [ 287.098037][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.098054][ C0] ? security_mmap_addr+0x71/0x270 [ 287.098079][ C0] mremap_to+0x6d6/0x7a0 [ 287.098107][ C0] ? __pfx_mremap_to+0x10/0x10 [ 287.098139][ C0] ? check_prep_vma+0x740/0xae0 [ 287.098169][ C0] __se_sys_mremap+0xa0b/0xef0 [ 287.098205][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.098232][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 287.098260][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 287.098284][ C0] do_syscall_64+0xfa/0x3b0 [ 287.098311][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.098327][ C0] ? __switch_to_asm+0x39/0x70 [ 287.098342][ C0] ? clear_bhb_loop+0x60/0xb0 [ 287.098361][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.098377][ C0] RIP: 0033:0x7fe8a4c542a9 [ 287.098393][ 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 [ 287.098406][ C0] RSP: 002b:00007fe8a4c0d238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.098422][ C0] RAX: ffffffffffffffda RBX: 00007fe8a4cde308 RCX: 00007fe8a4c542a9 [ 287.098434][ C0] RDX: 0000000000001000 RSI: 0000000000001000 RDI: 0000200000000000 [ 287.098445][ C0] RBP: 00007fe8a4cde300 R08: 0000200000481000 R09: 00007fe8a4c0d6c0 [ 287.098457][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 0000200000000000 [ 287.098467][ C0] R13: 0000000000000000 R14: 00007ffdb5b58750 R15: 00007ffdb5b58838 [ 287.098487][ C0] [ 287.098494][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.220 msecs [ 287.101046][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.488191][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.499523][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.509597][ T31] Call Trace: [ 287.512887][ T31] [ 287.515825][ T31] dump_stack_lvl+0x99/0x250 [ 287.520434][ T31] ? __asan_memcpy+0x40/0x70 [ 287.525040][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.530255][ T31] ? __pfx__printk+0x10/0x10 [ 287.534873][ T31] vpanic+0x281/0x750 [ 287.538871][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.543387][ T31] ? preempt_schedule+0xae/0xc0 [ 287.548293][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.553791][ T31] panic+0xb9/0xc0 [ 287.557525][ T31] ? __pfx_panic+0x10/0x10 [ 287.561952][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.567377][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.573560][ T31] watchdog+0xfd2/0xfe0 [ 287.577747][ T31] ? watchdog+0x1de/0xfe0 [ 287.582099][ T31] kthread+0x70e/0x8a0 [ 287.586189][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.590880][ T31] ? __pfx_kthread+0x10/0x10 [ 287.595491][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.600705][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.605924][ T31] ? __pfx_kthread+0x10/0x10 [ 287.610549][ T31] ret_from_fork+0x3f9/0x770 [ 287.615263][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.620401][ T31] ? __switch_to_asm+0x39/0x70 [ 287.625184][ T31] ? __switch_to_asm+0x33/0x70 [ 287.629968][ T31] ? __pfx_kthread+0x10/0x10 [ 287.634593][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.639399][ T31] [ 287.642796][ T31] Kernel Offset: disabled [ 287.647161][ T31] Rebooting in 86400 seconds..