./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2929960464 <...> Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. execve("./syz-executor2929960464", ["./syz-executor2929960464"], 0x7ffdf205eff0 /* 10 vars */) = 0 brk(NULL) = 0x555555f43000 brk(0x555555f43c40) = 0x555555f43c40 arch_prctl(ARCH_SET_FS, 0x555555f43300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2929960464", 4096) = 28 brk(0x555555f64c40) = 0x555555f64c40 brk(0x555555f65000) = 0x555555f65000 mprotect(0x7f8b04809000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555f435d0) = 5067 ./strace-static-x86_64: Process 5067 attached [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] setpgid(0, 0) = 0 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5067] write(3, "1000", 4) = 4 [pid 5067] close(3) = 0 [pid 5067] memfd_create("syzkaller", 0) = 3 [pid 5067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8afc34e000 [pid 5067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1048576) = 1048576 [pid 5067] munmap(0x7f8afc34e000, 1048576) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5067] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5067] close(3) = 0 [pid 5067] mkdir("./file0", 0777) = 0 [pid 5067] mount("/dev/loop0", "./file0", "ext4", MS_NOSUID|MS_SYNCHRONOUS|MS_NOATIME|MS_NODIRATIME, "data_err=abort,bsdgroups,data_err=ignore,nodelalloc,init_itable=0x0000000000000007,nogrpid,nobh,resg"...) = 0 [pid 5067] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5067] chdir("./file0") = 0 [pid 5067] ioctl(4, LOOP_CLR_FD) = 0 [pid 5067] close(4) = 0 [pid 5067] openat(AT_FDCWD, "cpuset.effective_cpus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5067] write(4, "0xfffffffffffffffd", 18) = 18 syzkaller login: [ 55.297243][ T5067] loop0: detected capacity change from 0 to 2048 [ 55.307636][ T5067] EXT4-fs: Ignoring removed nobh option [ 55.323054][ T5067] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. [pid 5067] ioctl(4, _IOC(_IOC_WRITE, 0x58, 0x29, 0x30), 0x20000000 [pid 5066] kill(-5067, SIGKILL) = 0 [pid 5066] kill(5067, SIGKILL) = 0 [pid 5066] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5066] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5066] getdents64(3, 0x555555f44620 /* 2 entries */, 32768) = 48 [pid 5066] getdents64(3, 0x555555f44620 /* 0 entries */, 32768) = 0 [pid 5066] close(3) = 0 [ 76.370058][ T2417] cfg80211: failed to load regulatory.db [ 286.288706][ T28] INFO: task syz-executor292:5067 blocked for more than 143 seconds. [ 286.296887][ T28] Not tainted 6.2.0-rc2-syzkaller-00203-g1f5abbd77e2c #0 [ 286.304603][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.313384][ T28] task:syz-executor292 state:D stack:20176 pid:5067 ppid:5066 flags:0x00004004 [ 286.322664][ T28] Call Trace: [ 286.325948][ T28] [ 286.328970][ T28] __schedule+0x995/0xe20 [ 286.333478][ T28] ? release_firmware_map_entry+0x180/0x180 [ 286.339445][ T28] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.344703][ T28] ? lockdep_hardirqs_on+0x8d/0x130 [ 286.350004][ T28] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 286.355918][ T28] ? _raw_spin_unlock+0x40/0x40 [ 286.360827][ T28] schedule+0xcb/0x190 [ 286.364908][ T28] io_schedule+0x83/0x100 [ 286.369286][ T28] bit_wait_io+0xe/0xc0 [ 286.373451][ T28] __wait_on_bit_lock+0xbb/0x1a0 [ 286.378381][ T28] ? bit_wait+0xc0/0xc0 [ 286.382719][ T28] out_of_line_wait_on_bit_lock+0x1c3/0x240 [ 286.388698][ T28] ? bit_wait+0xc0/0xc0 [ 286.393034][ T28] ? __wait_on_bit_lock+0x1a0/0x1a0 [ 286.398236][ T28] ? bit_waitqueue+0x30/0x30 [ 286.402943][ T28] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.408157][ T28] __sync_dirty_buffer+0x107/0x330 [ 286.413433][ T28] __ext4_handle_dirty_metadata+0x29a/0x810 [ 286.419450][ T28] ? ext4_convert_inline_data_nolock+0x66d/0x820 [ 286.427075][ T28] ext4_convert_inline_data_nolock+0x6e5/0x820 [ 286.433316][ T28] ? ext4_add_dirent_to_inline+0x450/0x450 [ 286.439175][ T28] ? ext4_journal_check_start+0x178/0x240 [ 286.444890][ T28] ? ext4_convert_inline_data+0x31f/0x610 [ 286.450663][ T28] ? __ext4_journal_start_sb+0x19b/0x1f0 [ 286.456324][ T28] ext4_convert_inline_data+0x4c8/0x610 [ 286.462168][ T28] ? memalloc_retry_wait+0xb0/0xb0 [ 286.467344][ T28] ext4_fallocate+0x149/0x1ca0 [ 286.472216][ T28] ? rcu_read_lock_any_held+0xb1/0x130 [ 286.477791][ T28] ? memalloc_retry_wait+0xb0/0xb0 [ 286.482970][ T28] vfs_fallocate+0x515/0x670 [ 286.487734][ T28] do_vfs_ioctl+0x2163/0x2980 [ 286.492521][ T28] ? __x64_compat_sys_ioctl+0x80/0x80 [ 286.497906][ T28] ? __lock_acquire+0x1f60/0x1f60 [ 286.502983][ T28] ? slab_free_freelist_hook+0x12e/0x1a0 [ 286.508689][ T28] ? __kmem_cache_free+0x71/0x110 [ 286.513708][ T28] ? tomoyo_path_number_perm+0x629/0x780 [ 286.519468][ T28] ? tomoyo_check_path_acl+0x1c0/0x1c0 [ 286.524940][ T28] ? lockdep_hardirqs_on_prepare+0x428/0x790 [ 286.531005][ T28] ? preempt_schedule+0xb6/0xc0 [ 286.535885][ T28] ? preempt_schedule_common+0xb7/0xe0 [ 286.541410][ T28] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 286.547686][ T28] ? do_notify_parent+0xe00/0xe00 [ 286.552889][ T28] ? bpf_lsm_file_ioctl+0x5/0x10 [ 286.557915][ T28] ? security_file_ioctl+0x9d/0xb0 [ 286.563140][ T28] __se_sys_ioctl+0x83/0x170 [ 286.567768][ T28] do_syscall_64+0x3d/0xb0 [ 286.572319][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 286.578233][ T28] RIP: 0033:0x7f8b0479b569 [ 286.582701][ T28] RSP: 002b:00007ffe3775bb88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 286.591189][ T28] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8b0479b569 [ 286.599212][ T28] RDX: 0000000020000000 RSI: 0000000040305829 RDI: 0000000000000004 [ 286.607209][ T28] RBP: 0000000000000000 R08: 00007f8b04809ec0 R09: 00007f8b04809ec0 [ 286.615348][ T28] R10: 0000000000000012 R11: 0000000000000246 R12: 00007ffe3775bbb0 [ 286.623368][ T28] R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 [ 286.631409][ T28] [ 286.634452][ T28] [ 286.634452][ T28] Showing all locks held in the system: [ 286.642280][ T28] 1 lock held by rcu_tasks_kthre/12: [ 286.647570][ T28] #0: ffffffff8d326f50 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 [ 286.658070][ T28] 1 lock held by rcu_tasks_trace/13: [ 286.663385][ T28] #0: ffffffff8d327750 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 [ 286.674406][ T28] 1 lock held by khungtaskd/28: [ 286.679281][ T28] #0: ffffffff8d326d80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 286.688677][ T28] 2 locks held by getty/4744: [ 286.693354][ T28] #0: ffff88814a169098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 [ 286.703224][ T28] #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 [ 286.713383][ T28] 3 locks held by syz-executor292/5067: [ 286.718987][ T28] #0: ffff888076b6a460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x489/0x670 [ 286.728287][ T28] #1: ffff88807590f258 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x141/0x1ca0 [ 286.738994][ T28] #2: ffff88807590ef20 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x3a4/0x610 [ 286.749414][ T28] [ 286.751729][ T28] ============================================= [ 286.751729][ T28] [ 286.760180][ T28] NMI backtrace for cpu 0 [ 286.764507][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc2-syzkaller-00203-g1f5abbd77e2c #0 [ 286.774296][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 286.784336][ T28] Call Trace: [ 286.787602][ T28] [ 286.790527][ T28] dump_stack_lvl+0x1b1/0x290 [ 286.795198][ T28] ? nf_tcp_handle_invalid+0x630/0x630 [ 286.800644][ T28] ? panic+0x710/0x710 [ 286.804703][ T28] ? nmi_cpu_backtrace+0x205/0x4f0 [ 286.809838][ T28] nmi_cpu_backtrace+0x46f/0x4f0 [ 286.814765][ T28] ? vprintk_emit+0x109/0x1e0 [ 286.819451][ T28] ? nmi_trigger_cpumask_backtrace+0x420/0x420 [ 286.825595][ T28] ? _printk+0xc0/0x100 [ 286.829735][ T28] ? panic+0x710/0x710 [ 286.834768][ T28] ? __wake_up_klogd+0xcd/0x100 [ 286.839628][ T28] ? panic+0x710/0x710 [ 286.843692][ T28] ? nmi_trigger_cpumask_backtrace+0xc9/0x420 [ 286.849752][ T28] nmi_trigger_cpumask_backtrace+0x1ba/0x420 [ 286.855722][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 286.861932][ T28] watchdog+0xcd5/0xd20 [ 286.866130][ T28] kthread+0x266/0x300 [ 286.870224][ T28] ? hungtask_pm_notify+0x50/0x50 [ 286.875256][ T28] ? kthread_blkcg+0xd0/0xd0 [ 286.879844][ T28] ret_from_fork+0x1f/0x30 [ 286.884293][ T28] [ 286.887470][ T28] Sending NMI from CPU 0 to CPUs 1: [ 286.892752][ C1] NMI backtrace for cpu 1 [ 286.892762][ C1] CPU: 1 PID: 1028 Comm: kworker/u4:5 Not tainted 6.2.0-rc2-syzkaller-00203-g1f5abbd77e2c #0 [ 286.892776][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 286.892786][ C1] Workqueue: events_unbound toggle_allocation_gate [ 286.892872][ C1] RIP: 0010:flush_tlb_mm_range+0x2c1/0x580 [ 286.892926][ C1] Code: 1f 84 00 00 00 00 00 66 90 43 0f b6 04 3e 84 c0 75 36 89 da 8b 35 87 22 58 0d 4c 89 e7 e8 57 e5 fe 02 49 89 c5 43 0f b6 04 3e <84> c0 75 39 8b 05 6d 22 58 0d 44 39 e8 76 57 4c 89 eb 48 ff c3 44 [ 286.892937][ C1] RSP: 0018:ffffc90005217760 EFLAGS: 00000086 [ 286.892948][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8880208e57c0 [ 286.892957][ C1] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000040 [ 286.892965][ C1] RBP: ffffc90005217830 R08: ffffffff843d324b R09: ffffed100250d0b7 [ 286.892974][ C1] R10: ffffed100250d0b7 R11: 1ffff1100250d0b6 R12: ffff888012868800 [ 286.892984][ C1] R13: 0000000000000002 R14: 1ffffffff1d2cdd7 R15: dffffc0000000000 [ 286.892993][ C1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 286.893003][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.893013][ C1] CR2: 000055cd63ed2a40 CR3: 000000000d08e000 CR4: 00000000003506e0 [ 286.893025][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 286.893032][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 286.893040][ C1] Call Trace: [ 286.893044][ C1] [ 286.893050][ C1] ? __rwlock_init+0x140/0x140 [ 286.893070][ C1] ? flush_tlb_multi+0x50/0x50 [ 286.893090][ C1] ? text_poke_memcpy+0x5/0x10 [ 286.893140][ C1] ? __kmem_cache_alloc_node+0xfb/0x340 [ 286.893154][ C1] __text_poke+0x6dc/0x900 [ 286.893170][ C1] ? __kmem_cache_alloc_node+0xfb/0x340 [ 286.893183][ C1] ? __text_poke+0x900/0x900 [ 286.893198][ C1] ? text_poke+0x90/0x90 [ 286.893211][ C1] ? perf_event_text_poke+0x233/0x310 [ 286.893252][ C1] ? perf_event_bpf_output+0x220/0x220 [ 286.893272][ C1] ? trace_contention_end+0x72/0x1d0 [ 286.893291][ C1] text_poke_bp_batch+0x64c/0x850 [ 286.893305][ C1] ? arch_jump_label_transform_apply+0xe/0x20 [ 286.893332][ C1] ? __kmem_cache_alloc_bulk+0xb5/0x3e0 [ 286.893347][ C1] ? text_poke_loc_init+0x500/0x500 [ 286.893364][ C1] ? __jump_label_update+0x38e/0x3b0 [ 286.893396][ C1] text_poke_finish+0x16/0x30 [ 286.893409][ C1] arch_jump_label_transform_apply+0x13/0x20 [ 286.893429][ C1] static_key_disable_cpuslocked+0xc8/0x1b0 [ 286.893445][ C1] static_key_disable+0x16/0x20 [ 286.893458][ C1] toggle_allocation_gate+0x1a8/0x240 [ 286.893474][ C1] ? virt_to_slab+0x2c0/0x2c0 [ 286.893487][ C1] ? rcu_read_lock_sched_held+0x87/0x110 [ 286.893510][ C1] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 286.893528][ C1] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 286.893558][ C1] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.893583][ C1] process_one_work+0x877/0xdb0 [ 286.893630][ C1] ? worker_detach_from_pool+0x260/0x260 [ 286.893649][ C1] ? _raw_spin_lock_irq+0xba/0xf0 [ 286.893667][ C1] ? _raw_spin_lock_irqsave+0x100/0x100 [ 286.893690][ C1] worker_thread+0xb14/0x1330 [ 286.893712][ C1] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 286.893738][ C1] kthread+0x266/0x300 [ 286.893752][ C1] ? rcu_lock_release+0x20/0x20 [ 286.893768][ C1] ? kthread_blkcg+0xd0/0xd0 [ 286.893788][ C1] ret_from_fork+0x1f/0x30 [ 286.893812][ C1] [ 286.893817][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.066 msecs [ 286.894809][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 287.248022][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc2-syzkaller-00203-g1f5abbd77e2c #0 [ 287.257821][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 287.267870][ T28] Call Trace: [ 287.271143][ T28] [ 287.274072][ T28] dump_stack_lvl+0x1b1/0x290 [ 287.278755][ T28] ? nf_tcp_handle_invalid+0x630/0x630 [ 287.284210][ T28] ? panic+0x710/0x710 [ 287.288276][ T28] ? vscnprintf+0x59/0x80 [ 287.292600][ T28] panic+0x2d6/0x710 [ 287.296490][ T28] ? schedule_preempt_disabled+0x20/0x20 [ 287.302119][ T28] ? nmi_trigger_cpumask_backtrace+0x2d0/0x420 [ 287.308272][ T28] ? memcpy_page_flushcache+0x100/0x100 [ 287.313814][ T28] ? nmi_trigger_cpumask_backtrace+0x2d0/0x420 [ 287.319961][ T28] ? nmi_trigger_cpumask_backtrace+0x34e/0x420 [ 287.326112][ T28] ? nmi_trigger_cpumask_backtrace+0x353/0x420 [ 287.332260][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 287.338324][ T28] watchdog+0xd15/0xd20 [ 287.342487][ T28] kthread+0x266/0x300 [ 287.346550][ T28] ? hungtask_pm_notify+0x50/0x50 [ 287.351566][ T28] ? kthread_blkcg+0xd0/0xd0 [ 287.356150][ T28] ret_from_fork+0x1f/0x30 [ 287.360570][ T28] [ 287.363753][ T28] Kernel Offset: disabled [ 287.368078][ T28] Rebooting in 86400 seconds..