./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor514202303 <...> Warning: Permanently added '10.128.1.142' (ED25519) to the list of known hosts. execve("./syz-executor514202303", ["./syz-executor514202303"], 0x7ffebee7a850 /* 10 vars */) = 0 brk(NULL) = 0x55556ba09000 brk(0x55556ba09d40) = 0x55556ba09d40 arch_prctl(ARCH_SET_FS, 0x55556ba093c0) = 0 set_tid_address(0x55556ba09690) = 5850 set_robust_list(0x55556ba096a0, 24) = 0 rseq(0x55556ba09ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor514202303", 4096) = 27 getrandom("\xc7\x9c\xcb\x27\xf0\x64\xd9\x15", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556ba09d40 brk(0x55556ba2ad40) = 0x55556ba2ad40 brk(0x55556ba2b000) = 0x55556ba2b000 mprotect(0x7fd5ced66000, 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 5851 attached [pid 5851] set_robust_list(0x55556ba096a0, 24 [pid 5850] <... clone resumed>, child_tidptr=0x55556ba09690) = 5851 [pid 5851] <... set_robust_list resumed>) = 0 [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5851] setpgid(0, 0) = 0 [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5851] write(3, "1000", 4) = 4 [pid 5851] close(3) = 0 [pid 5851] write(1, "executing program\n", 18executing program ) = 18 [pid 5851] futex(0x7fd5ced6c30c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5851] rt_sigaction(SIGRT_1, {sa_handler=0x7fd5ced081e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fd5cecf9860}, NULL, 8) = 0 [pid 5851] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd5cec7b000 [pid 5851] mprotect(0x7fd5cec7c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5851] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fd5cec9b990, parent_tid=0x7fd5cec9b990, exit_signal=0, stack=0x7fd5cec7b000, stack_size=0x20300, tls=0x7fd5cec9b6c0}./strace-static-x86_64: Process 5852 attached => {parent_tid=[5852]}, 88) = 5852 [pid 5851] rt_sigprocmask(SIG_SETMASK, [], [pid 5852] rseq(0x7fd5cec9bfe0, 0x20, 0, 0x53053053 [pid 5851] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5852] <... rseq resumed>) = 0 [pid 5852] set_robust_list(0x7fd5cec9b9a0, 24) = 0 [pid 5852] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5852] mremap(0x2000005ab000, 4096, 4096, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000ffe000 [pid 5851] futex(0x7fd5ced6c308, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 97.212708][ T120] cfg80211: failed to load regulatory.db [pid 5850] kill(-5851, SIGKILL) = 0 [pid 5850] kill(5851, SIGKILL) = 0 [pid 5850] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5850] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5850] getdents64(3, 0x55556ba0a730 /* 2 entries */, 32768) = 48 [pid 5850] getdents64(3, 0x55556ba0a730 /* 0 entries */, 32768) = 0 [pid 5850] close(3) = 0 [ 286.653449][ T31] INFO: task syz-executor514:5851 blocked for more than 143 seconds. [ 286.662137][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.669781][ T31] Blocked by coredump. [ 286.675191][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.684737][ T31] task:syz-executor514 state:D stack:26920 pid:5851 tgid:5851 ppid:5850 task_flags:0x40044c flags:0x00004006 [ 286.697373][ T31] Call Trace: [ 286.701009][ T31] [ 286.703994][ T31] __schedule+0x1737/0x4d30 [ 286.708782][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.715545][ T31] ? schedule+0x165/0x360 [ 286.719992][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.725428][ T31] ? __pfx___schedule+0x10/0x10 [ 286.730827][ T31] ? schedule+0x91/0x360 [ 286.735246][ T31] schedule+0x165/0x360 [ 286.739474][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.745707][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.751740][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.757584][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.764356][ T31] ? exit_mm+0xcc/0x2c0 [ 286.768586][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.774553][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.780719][ T31] down_read+0x98/0x2e0 [ 286.785112][ T31] exit_mm+0xcc/0x2c0 [ 286.789331][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.795502][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.800888][ T31] do_exit+0x648/0x2300 [ 286.805681][ T31] ? do_raw_spin_lock+0x121/0x290 [ 286.811275][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.815952][ T31] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 286.822978][ T31] do_group_exit+0x21c/0x2d0 [ 286.827656][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.833643][ T31] get_signal+0x1286/0x1340 [ 286.838231][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 286.844516][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.849386][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 286.856187][ T31] ? __bad_area_nosemaphore+0x3fb/0x780 [ 286.862141][ T31] ? local_irq_enable_exit_to_user+0x5/0x10 [ 286.868616][ T31] irqentry_exit_to_user_mode+0x81/0x120 [ 286.874944][ T31] exc_page_fault+0x9f/0xf0 [ 286.879780][ T31] asm_exc_page_fault+0x26/0x30 [ 286.885498][ T31] RIP: 0033:0x7fd5ceca2a90 [ 286.890000][ T31] RSP: 002b:00007fffa9d8e818 EFLAGS: 00010202 [ 286.896641][ T31] RAX: 00007fd5ceca2a90 RBX: 00007fd5ced6c30c RCX: 00007fd5cece22a9 [ 286.905070][ T31] RDX: 00000000000f4240 RSI: 00007fffa9d8e860 RDI: 0000000000000001 [ 286.913911][ T31] RBP: 0000000000000064 R08: 00007fffa9d8e747 R09: 0000000000000000 [ 286.922434][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd5ced6c300 [ 286.932279][ T31] R13: 00007fffa9d8e8a0 R14: 00007fffa9d8e848 R15: 00007fd5cecadde0 [ 286.940952][ T31] [ 286.944180][ T31] [ 286.944180][ T31] Showing all locks held in the system: [ 286.953129][ T31] 1 lock held by khungtaskd/31: [ 286.958222][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.968716][ T31] 2 locks held by getty/5608: [ 286.973798][ T31] #0: ffff8880339060a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.984097][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.994622][ T31] 1 lock held by syz-executor514/5851: [ 287.000120][ T31] #0: ffff88807a94e2a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.009321][ T31] 1 lock held by syz-executor514/5852: [ 287.015312][ T31] [ 287.017695][ T31] ============================================= [ 287.017695][ T31] [ 287.026804][ T31] NMI backtrace for cpu 1 [ 287.026831][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.026854][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.026866][ T31] Call Trace: [ 287.026874][ T31] [ 287.026882][ T31] dump_stack_lvl+0x189/0x250 [ 287.026919][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.026947][ T31] ? __pfx__printk+0x10/0x10 [ 287.026988][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 287.027016][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.027043][ T31] ? __pfx__printk+0x10/0x10 [ 287.027075][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.027101][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 287.027129][ T31] watchdog+0xf93/0xfe0 [ 287.027155][ T31] ? watchdog+0x1de/0xfe0 [ 287.027182][ T31] kthread+0x70e/0x8a0 [ 287.027214][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.027233][ T31] ? __pfx_kthread+0x10/0x10 [ 287.027263][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.027289][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.027314][ T31] ? __pfx_kthread+0x10/0x10 [ 287.027344][ T31] ret_from_fork+0x3f9/0x770 [ 287.027371][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.027402][ T31] ? __switch_to_asm+0x39/0x70 [ 287.027418][ T31] ? __switch_to_asm+0x33/0x70 [ 287.027434][ T31] ? __pfx_kthread+0x10/0x10 [ 287.027464][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.027499][ T31] [ 287.027506][ T31] Sending NMI from CPU 1 to CPUs 0: [ 287.176000][ C0] NMI backtrace for cpu 0 [ 287.176017][ C0] CPU: 0 UID: 0 PID: 5852 Comm: syz-executor514 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.176038][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.176048][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x5d/0x70 [ 287.176071][ C0] Code: 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 8b 89 1c 16 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 cc cc cc cc cc 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 [ 287.176086][ C0] RSP: 0018:ffffc90003f27278 EFLAGS: 00000293 [ 287.176101][ C0] RAX: ffffffff8b785c39 RBX: ffff88807a94e100 RCX: ffff8880328dda00 [ 287.176114][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 287.176124][ C0] RBP: ffffc90003f27450 R08: ffff8880328dda00 R09: 0000000000000003 [ 287.176136][ C0] R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880717183c0 [ 287.176146][ C0] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000300 [ 287.176157][ C0] FS: 00007fd5cec9b6c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 287.176171][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.176183][ C0] CR2: 00007ffe5d644f19 CR3: 000000007b38c000 CR4: 00000000003526f0 [ 287.176198][ C0] Call Trace: [ 287.176205][ C0] [ 287.176212][ C0] mt_validate+0x3e49/0x4380 [ 287.176246][ C0] ? __pfx_mt_validate+0x10/0x10 [ 287.176270][ C0] ? __kasan_slab_alloc+0x6c/0x80 [ 287.176292][ C0] ? kmem_cache_alloc_bulk_noprof+0xfa/0x790 [ 287.176323][ C0] validate_mm+0xb6/0x4b0 [ 287.176349][ C0] ? __pfx_validate_mm+0x10/0x10 [ 287.176382][ C0] vma_link+0x366/0x450 [ 287.176408][ C0] ? __pfx_vma_link+0x10/0x10 [ 287.176436][ C0] ? anon_vma_clone+0x49b/0x4f0 [ 287.176455][ C0] ? anon_vma_name+0x87/0xf0 [ 287.176472][ C0] ? vm_area_dup+0x4f5/0x680 [ 287.176496][ C0] copy_vma+0x70c/0x940 [ 287.176519][ C0] ? rcu_is_watching+0x15/0xb0 [ 287.176545][ C0] ? __pfx_copy_vma+0x10/0x10 [ 287.176572][ C0] ? __pfx_move_page_tables+0x10/0x10 [ 287.176610][ C0] move_vma+0x81f/0x1840 [ 287.176633][ C0] ? __lock_acquire+0xab9/0xd20 [ 287.176662][ C0] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 287.176685][ C0] ? __pfx_move_vma+0x10/0x10 [ 287.176712][ C0] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 287.176747][ C0] ? cap_mmap_addr+0xb0/0x100 [ 287.176768][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.176784][ C0] ? security_mmap_addr+0x71/0x270 [ 287.176810][ C0] mremap_to+0x6d6/0x7a0 [ 287.176839][ C0] ? __pfx_mremap_to+0x10/0x10 [ 287.176865][ C0] ? check_prep_vma+0x740/0xae0 [ 287.176895][ C0] __se_sys_mremap+0xa0b/0xef0 [ 287.176930][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.176958][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 287.176985][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 287.177010][ C0] do_syscall_64+0xfa/0x3b0 [ 287.177036][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.177052][ C0] ? __switch_to_asm+0x39/0x70 [ 287.177067][ C0] ? clear_bhb_loop+0x60/0xb0 [ 287.177086][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.177102][ C0] RIP: 0033:0x7fd5cece22a9 [ 287.177116][ 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 [ 287.177130][ C0] RSP: 002b:00007fd5cec9b238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.177146][ C0] RAX: ffffffffffffffda RBX: 00007fd5ced6c308 RCX: 00007fd5cece22a9 [ 287.177158][ C0] RDX: 0000000000001000 RSI: 0000000000001000 RDI: 00002000005ab000 [ 287.177169][ C0] RBP: 00007fd5ced6c300 R08: 0000200000ffe000 R09: 00007fd5cec9b6c0 [ 287.177180][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 00002000005ab000 [ 287.177191][ C0] R13: 0000000000000000 R14: 00007fffa9d8e660 R15: 00007fffa9d8e748 [ 287.177211][ C0] [ 287.177219][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.219 msecs [ 287.178008][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.571173][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.582566][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.592740][ T31] Call Trace: [ 287.596070][ T31] [ 287.599017][ T31] dump_stack_lvl+0x99/0x250 [ 287.603658][ T31] ? __asan_memcpy+0x40/0x70 [ 287.608540][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.613769][ T31] ? __pfx__printk+0x10/0x10 [ 287.618446][ T31] vpanic+0x281/0x750 [ 287.622577][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.627122][ T31] ? __x2apic_send_IPI_mask+0x1e4/0x260 [ 287.632693][ T31] ? preempt_schedule+0xae/0xc0 [ 287.638103][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.643609][ T31] panic+0xb9/0xc0 [ 287.647507][ T31] ? __pfx_panic+0x10/0x10 [ 287.651965][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.657372][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.663836][ T31] watchdog+0xfd2/0xfe0 [ 287.669181][ T31] ? watchdog+0x1de/0xfe0 [ 287.673683][ T31] kthread+0x70e/0x8a0 [ 287.677795][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.682494][ T31] ? __pfx_kthread+0x10/0x10 [ 287.687300][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.692517][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.697736][ T31] ? __pfx_kthread+0x10/0x10 [ 287.702350][ T31] ret_from_fork+0x3f9/0x770 [ 287.706967][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.712199][ T31] ? __switch_to_asm+0x39/0x70 [ 287.717005][ T31] ? __switch_to_asm+0x33/0x70 [ 287.721790][ T31] ? __pfx_kthread+0x10/0x10 [ 287.726435][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.731265][ T31] [ 287.734713][ T31] Kernel Offset: disabled [ 287.739240][ T31] Rebooting in 86400 seconds..