./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor942460612 <...> no interfaces have a carrier [ 58.177220][ T5508] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.201309][ T5508] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.3' (ED25519) to the list of known hosts. execve("./syz-executor942460612", ["./syz-executor942460612"], 0x7ffd0557a3b0 /* 10 vars */) = 0 brk(NULL) = 0x555571dd0000 brk(0x555571dd0d40) = 0x555571dd0d40 arch_prctl(ARCH_SET_FS, 0x555571dd03c0) = 0 set_tid_address(0x555571dd0690) = 5846 set_robust_list(0x555571dd06a0, 24) = 0 rseq(0x555571dd0ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor942460612", 4096) = 27 getrandom("\x0a\xaa\xe3\x92\x43\x21\x72\x80", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555571dd0d40 brk(0x555571df1d40) = 0x555571df1d40 brk(0x555571df2000) = 0x555571df2000 mprotect(0x7f70d2c37000, 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 5848 attached , child_tidptr=0x555571dd0690) = 5848 [pid 5848] set_robust_list(0x555571dd06a0, 24) = 0 [pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5848] setpgid(0, 0) = 0 [pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1000", 4) = 4 [pid 5848] close(3) = 0 [pid 5848] write(1, "executing program\n", 18executing program ) = 18 [pid 5848] futex(0x7f70d2c3d30c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5848] rt_sigaction(SIGRT_1, {sa_handler=0x7f70d2bd9220, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f70d2bca8a0}, NULL, 8) = 0 [pid 5848] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f70d2b4c000 [pid 5848] mprotect(0x7f70d2b4d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5848] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5848] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f70d2b6c990, parent_tid=0x7f70d2b6c990, exit_signal=0, stack=0x7f70d2b4c000, stack_size=0x20300, tls=0x7f70d2b6c6c0}./strace-static-x86_64: Process 5849 attached [pid 5849] rseq(0x7f70d2b6cfe0, 0x20, 0, 0x53053053) = 0 [pid 5848] <... clone3 resumed> => {parent_tid=[5849]}, 88) = 5849 [pid 5849] set_robust_list(0x7f70d2b6c9a0, 24 [pid 5848] rt_sigprocmask(SIG_SETMASK, [], [pid 5849] <... set_robust_list resumed>) = 0 [pid 5848] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5849] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5848] futex(0x7f70d2c3d308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5849] mremap(0x200000a96000, 4096, 8388608, MREMAP_MAYMOVE|MREMAP_FIXED, 0x200000130000 [pid 5848] <... futex resumed>) = 0 [pid 5849] <... mremap resumed>) = 0x200000130000 [pid 5848] futex(0x7f70d2c3d30c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5849] futex(0x7f70d2c3d30c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5849] futex(0x7f70d2c3d308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5848] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5848] futex(0x7f70d2c3d308, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5849] <... futex resumed>) = 0 [pid 5848] futex(0x7f70d2c3d30c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5849] mremap(0x200000000000, 4096, 4096, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000481000 [pid 5848] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5848] exit_group(0) = ? syzkaller login: [ 91.965021][ T44] cfg80211: failed to load regulatory.db [pid 5846] kill(-5848, SIGKILL) = 0 [pid 5846] kill(5848, SIGKILL) = 0 [pid 5846] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5846] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5846] getdents64(3, 0x555571dd1730 /* 2 entries */, 32768) = 48 [pid 5846] getdents64(3, 0x555571dd1730 /* 0 entries */, 32768) = 0 [pid 5846] close(3) = 0 [ 286.523456][ T31] INFO: task syz-executor942:5848 blocked for more than 143 seconds. [ 286.531638][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.539748][ T31] Blocked by coredump. [ 286.544684][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.553675][ T31] task:syz-executor942 state:D stack:25848 pid:5848 tgid:5848 ppid:5846 task_flags:0x40004c flags:0x00004002 [ 286.566036][ T31] Call Trace: [ 286.569350][ T31] [ 286.572317][ T31] __schedule+0x1737/0x4d30 [ 286.577461][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.582365][ T31] ? schedule+0x165/0x360 [ 286.587739][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.592647][ T31] ? __pfx___schedule+0x10/0x10 [ 286.597976][ T31] ? schedule+0x91/0x360 [ 286.602295][ T31] schedule+0x165/0x360 [ 286.606967][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.612472][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.618483][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.624611][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.630729][ T31] ? exit_mm+0xcc/0x2c0 [ 286.635340][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.640229][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.645907][ T31] down_read+0x98/0x2e0 [ 286.650096][ T31] exit_mm+0xcc/0x2c0 [ 286.654403][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.659035][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.664326][ T31] do_exit+0x648/0x2300 [ 286.668526][ T31] ? irqentry_exit+0x74/0x90 [ 286.673142][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.678912][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.683870][ T31] ? _raw_spin_unlock_irq+0x29/0x50 [ 286.689119][ T31] do_group_exit+0x21c/0x2d0 [ 286.694629][ T31] __x64_sys_exit_group+0x3f/0x40 [ 286.699699][ T31] x64_sys_call+0x21f7/0x2200 [ 286.704867][ T31] do_syscall_64+0xfa/0x3b0 [ 286.709406][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.715038][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.721140][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.726336][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.732266][ T31] RIP: 0033:0x7f70d2bb1349 [ 286.737079][ T31] RSP: 002b:00007ffd9c81a718 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 286.745858][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f70d2bb1349 [ 286.754134][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 286.762148][ T31] RBP: 00007f70d2c3d2b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 286.770610][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f70d2c3d2b0 [ 286.778873][ T31] R13: 0000000000000000 R14: 00007f70d2c3de40 R15: 00007f70d2b7f160 [ 286.787199][ T31] [ 286.790309][ T31] [ 286.790309][ T31] Showing all locks held in the system: [ 286.798898][ T31] 1 lock held by khungtaskd/31: [ 286.804608][ T31] #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.814781][ T31] 2 locks held by getty/5605: [ 286.819479][ T31] #0: ffff888033a1b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.829769][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.840285][ T31] 1 lock held by syz-executor942/5848: [ 286.846186][ T31] #0: ffff88807fbd57e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 286.855451][ T31] 1 lock held by syz-executor942/5849: [ 286.860978][ T31] [ 286.863736][ T31] ============================================= [ 286.863736][ T31] [ 286.872210][ T31] NMI backtrace for cpu 0 [ 286.872239][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.872267][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.872278][ T31] Call Trace: [ 286.872287][ T31] [ 286.872296][ T31] dump_stack_lvl+0x189/0x250 [ 286.872332][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.872355][ T31] ? __pfx__printk+0x10/0x10 [ 286.872393][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.872422][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.872449][ T31] ? __pfx__printk+0x10/0x10 [ 286.872479][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.872511][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.872539][ T31] watchdog+0xf93/0xfe0 [ 286.872571][ T31] ? watchdog+0x1de/0xfe0 [ 286.872602][ T31] kthread+0x70e/0x8a0 [ 286.872628][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.872653][ T31] ? __pfx_kthread+0x10/0x10 [ 286.872677][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.872704][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.872731][ T31] ? __pfx_kthread+0x10/0x10 [ 286.872754][ T31] ret_from_fork+0x3f9/0x770 [ 286.872775][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.872799][ T31] ? __switch_to_asm+0x39/0x70 [ 286.872822][ T31] ? __switch_to_asm+0x33/0x70 [ 286.872844][ T31] ? __pfx_kthread+0x10/0x10 [ 286.872866][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.872906][ T31] [ 286.872913][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.020766][ C1] NMI backtrace for cpu 1 [ 287.020785][ C1] CPU: 1 UID: 0 PID: 5849 Comm: syz-executor942 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.020805][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.020816][ C1] RIP: 0010:mas_next_slot+0x7b4/0xcf0 [ 287.020846][ C1] Code: 08 4c 89 f7 e8 7d 0c b3 f6 49 89 1e 48 8b 44 24 48 42 0f b6 04 20 84 c0 0f 85 f8 03 00 00 48 8b 44 24 10 44 0f b6 38 41 fe c7 <44> 88 38 48 8b 44 24 68 42 0f b6 04 20 84 c0 0f 85 f6 03 00 00 48 [ 287.020860][ C1] RSP: 0018:ffffc9000413f320 EFLAGS: 00000206 [ 287.020875][ C1] RAX: ffffc9000413f4fd RBX: 00001fff829eb000 RCX: ffff88807d0fbc00 [ 287.020888][ C1] RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00001fff829eafff [ 287.020900][ C1] RBP: 0000000000000001 R08: ffff88807d0fbc00 R09: 0000000000000004 [ 287.020910][ C1] R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000 [ 287.020921][ C1] R13: ffff888076c6d200 R14: ffffc9000413f4c8 R15: 0000000000000005 [ 287.020933][ C1] FS: 00007f70d2b6c6c0(0000) GS:ffff888125ce3000(0000) knlGS:0000000000000000 [ 287.020947][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.020958][ C1] CR2: 00005634ac61d168 CR3: 0000000076c8c000 CR4: 00000000003526f0 [ 287.020974][ C1] Call Trace: [ 287.020982][ C1] [ 287.021002][ C1] mas_find+0xb0e/0xd30 [ 287.021036][ C1] validate_mm+0xe1/0x4b0 [ 287.021059][ C1] ? __pfx_validate_mm+0x10/0x10 [ 287.021087][ C1] vma_link+0x366/0x450 [ 287.021108][ C1] ? __pfx_vma_link+0x10/0x10 [ 287.021131][ C1] ? anon_vma_clone+0x49b/0x4f0 [ 287.021155][ C1] ? anon_vma_name+0x87/0xf0 [ 287.021179][ C1] ? vm_area_dup+0x4f5/0x680 [ 287.021198][ C1] copy_vma+0x70c/0x940 [ 287.021222][ C1] ? __pfx_copy_vma+0x10/0x10 [ 287.021245][ C1] ? __pfx_move_page_tables+0x10/0x10 [ 287.021278][ C1] move_vma+0x81f/0x1840 [ 287.021297][ C1] ? __lock_acquire+0xab9/0xd20 [ 287.021331][ C1] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 287.021350][ C1] ? __pfx_move_vma+0x10/0x10 [ 287.021373][ C1] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 287.021397][ C1] ? cap_mmap_addr+0xb0/0x100 [ 287.021422][ C1] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.021444][ C1] ? security_mmap_addr+0x71/0x270 [ 287.021472][ C1] mremap_to+0x6d6/0x7a0 [ 287.021496][ C1] ? __pfx_mremap_to+0x10/0x10 [ 287.021518][ C1] ? check_prep_vma+0x740/0xae0 [ 287.021542][ C1] __se_sys_mremap+0xa0b/0xef0 [ 287.021573][ C1] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.021596][ C1] ? __pfx_ptrace_notify+0x10/0x10 [ 287.021629][ C1] ? __x64_sys_mremap+0x20/0xc0 [ 287.021649][ C1] do_syscall_64+0xfa/0x3b0 [ 287.021667][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.021683][ C1] ? __switch_to_asm+0x39/0x70 [ 287.021704][ C1] ? clear_bhb_loop+0x60/0xb0 [ 287.021723][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.021739][ C1] RIP: 0033:0x7f70d2bb32e9 [ 287.021754][ 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 [ 287.021767][ C1] RSP: 002b:00007f70d2b6c228 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.021783][ C1] RAX: ffffffffffffffda RBX: 00007f70d2c3d308 RCX: 00007f70d2bb32e9 [ 287.021795][ C1] RDX: 0000000000001000 RSI: 0000000000001000 RDI: 0000200000000000 [ 287.021806][ C1] RBP: 00007f70d2c3d300 R08: 0000200000481000 R09: 00007f70d2b6c6c0 [ 287.021818][ C1] R10: 0000000000000007 R11: 0000000000000246 R12: 00007f70d2c3d30c [ 287.021828][ C1] R13: 0000200000000000 R14: 0000200000a96000 R15: 00007ffd9c81a698 [ 287.021849][ C1] [ 287.021857][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.092 msecs [ 287.022831][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.022852][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.022878][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.022891][ T31] Call Trace: [ 287.022901][ T31] [ 287.022910][ T31] dump_stack_lvl+0x99/0x250 [ 287.022941][ T31] ? __asan_memcpy+0x40/0x70 [ 287.022969][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.022995][ T31] ? __pfx__printk+0x10/0x10 [ 287.023038][ T31] vpanic+0x281/0x750 [ 287.023066][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.023089][ T31] ? __x2apic_send_IPI_mask+0x1e4/0x260 [ 287.023118][ T31] ? preempt_schedule+0xae/0xc0 [ 287.023153][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.023197][ T31] panic+0xb9/0xc0 [ 287.023222][ T31] ? __pfx_panic+0x10/0x10 [ 287.023249][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.023298][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.023330][ T31] watchdog+0xfd2/0xfe0 [ 287.023369][ T31] ? watchdog+0x1de/0xfe0 [ 287.023406][ T31] kthread+0x70e/0x8a0 [ 287.023436][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.023468][ T31] ? __pfx_kthread+0x10/0x10 [ 287.023497][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.023528][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.023560][ T31] ? __pfx_kthread+0x10/0x10 [ 287.023587][ T31] ret_from_fork+0x3f9/0x770 [ 287.023614][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.023644][ T31] ? __switch_to_asm+0x39/0x70 [ 287.023672][ T31] ? __switch_to_asm+0x33/0x70 [ 287.023700][ T31] ? __pfx_kthread+0x10/0x10 [ 287.023728][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.023775][ T31] [ 287.550972][ T31] Kernel Offset: disabled [ 287.555303][ T31] Rebooting in 86400 seconds..