./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2643525873 <...> Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts. execve("./syz-executor2643525873", ["./syz-executor2643525873"], 0x7ffd32dcb1a0 /* 10 vars */) = 0 brk(NULL) = 0x555556726000 brk(0x555556726c40) = 0x555556726c40 arch_prctl(ARCH_SET_FS, 0x555556726300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2643525873", 4096) = 28 brk(0x555556747c40) = 0x555556747c40 brk(0x555556748000) = 0x555556748000 mprotect(0x7f60274c9000, 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=0x5555567265d0) = 5074 ./strace-static-x86_64: Process 5074 attached [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5074] setpgid(0, 0) = 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5074] write(3, "1000", 4) = 4 [pid 5074] close(3) = 0 [pid 5074] memfd_create("syzkaller", 0) = 3 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f601f00e000 [pid 5074] 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 5074] munmap(0x7f601f00e000, 1048576) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5074] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5074] close(3) = 0 [pid 5074] mkdir("./file0", 0777) = 0 [pid 5074] mount("/dev/loop0", "./file0", "ext4", MS_SYNCHRONOUS, "data_err=abort,usrjquota=,dioread_nolock,journal_ioprio=0x00001,,errors=continue") = 0 [pid 5074] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5074] chdir("./file0") = 0 [pid 5074] ioctl(4, LOOP_CLR_FD) = 0 [pid 5074] close(4) = 0 [pid 5074] openat(AT_FDCWD, "devices.list", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5074] pwrite64(4, "\x00\x1f\x55\xd6\x4e\x5a\x11\xb0\xe8\xa9\xb9\xc1\xc2\x01\xcf\x30\x72\xb2\x77\x84\x0b\x16\xb8\xd5\xce\xb8\x8a\xcf\xb3\x95\x64\xff\x07\x1d\x0f\x3d\x4a\xa4\x23\x0e\xf3\xa8\x83\x3e\xca\x6f\xcc\x08\x0a\x90\xe2\xb3\xb7\x8a\x58\x6b\x12\x21\x29\x82", 60, 2199023255552) = 60 [pid 5074] openat(AT_FDCWD, "devices.list", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [ 51.556141][ T5074] loop0: detected capacity change from 0 to 2048 [ 51.569717][ T5074] EXT4-fs: Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [ 51.595035][ T5074] EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. [pid 5074] ioctl(5, _IOC(_IOC_WRITE, 0x58, 0x28, 0x30), 0x20000040 [pid 5073] kill(-5074, SIGKILL) = 0 [pid 5073] kill(5074, SIGKILL) = 0 [pid 5073] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5073] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5073] getdents64(3, 0x555556727620 /* 2 entries */, 32768) = 48 [pid 5073] getdents64(3, 0x555556727620 /* 0 entries */, 32768) = 0 [pid 5073] close(3) = 0 [ 76.430195][ T897] cfg80211: failed to load regulatory.db [ 286.348867][ T28] INFO: task syz-executor264:5074 blocked for more than 143 seconds. [ 286.357044][ T28] Not tainted 6.2.0-rc4-syzkaller #0 [ 286.363335][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.372157][ T28] task:syz-executor264 state:D stack:20176 pid:5074 ppid:5073 flags:0x00004004 [ 286.381585][ T28] Call Trace: [ 286.384863][ T28] [ 286.387794][ T28] __schedule+0x995/0xe20 [ 286.392296][ T28] ? release_firmware_map_entry+0x180/0x180 [ 286.398201][ T28] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.403569][ T28] ? lockdep_hardirqs_on+0x8d/0x130 [ 286.408851][ T28] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 286.414740][ T28] ? _raw_spin_unlock+0x40/0x40 [ 286.419706][ T28] schedule+0xcb/0x190 [ 286.423783][ T28] io_schedule+0x83/0x100 [ 286.428103][ T28] bit_wait_io+0xe/0xc0 [ 286.432312][ T28] __wait_on_bit_lock+0xbb/0x1a0 [ 286.437259][ T28] ? bit_wait+0xc0/0xc0 [ 286.441537][ T28] out_of_line_wait_on_bit_lock+0x1c3/0x240 [ 286.447451][ T28] ? bit_wait+0xc0/0xc0 [ 286.451653][ T28] ? __wait_on_bit_lock+0x1a0/0x1a0 [ 286.456861][ T28] ? bit_waitqueue+0x30/0x30 [ 286.461638][ T28] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.466854][ T28] __sync_dirty_buffer+0x107/0x330 [ 286.472179][ T28] __ext4_handle_dirty_metadata+0x29a/0x810 [ 286.478191][ T28] ? ext4_convert_inline_data_nolock+0x66d/0x820 [ 286.484726][ T28] ext4_convert_inline_data_nolock+0x6e5/0x820 [ 286.491030][ T28] ? ext4_add_dirent_to_inline+0x450/0x450 [ 286.496871][ T28] ? ext4_journal_check_start+0x178/0x240 [ 286.502765][ T28] ? ext4_convert_inline_data+0x31f/0x610 [ 286.508542][ T28] ? __ext4_journal_start_sb+0x19b/0x1f0 [ 286.514348][ T28] ext4_convert_inline_data+0x4c8/0x610 [ 286.520098][ T28] ? memalloc_retry_wait+0xb0/0xb0 [ 286.525235][ T28] ext4_fallocate+0x149/0x1ca0 [ 286.530051][ T28] ? rcu_read_lock_any_held+0xb1/0x130 [ 286.535630][ T28] ? memalloc_retry_wait+0xb0/0xb0 [ 286.540824][ T28] vfs_fallocate+0x515/0x670 [ 286.545480][ T28] do_vfs_ioctl+0x2163/0x2980 [ 286.550300][ T28] ? __x64_compat_sys_ioctl+0x80/0x80 [ 286.555680][ T28] ? __lock_acquire+0x1f60/0x1f60 [ 286.560772][ T28] ? slab_free_freelist_hook+0x12e/0x1a0 [ 286.566442][ T28] ? tomoyo_path_number_perm+0x5af/0x780 [ 286.572232][ T28] ? __kmem_cache_free+0x71/0x110 [ 286.577283][ T28] ? tomoyo_path_number_perm+0x629/0x780 [ 286.583022][ T28] ? tomoyo_check_path_acl+0x1c0/0x1c0 [ 286.588505][ T28] ? _raw_spin_lock_irqsave+0x100/0x100 [ 286.594138][ T28] ? do_notify_parent+0xe00/0xe00 [ 286.599320][ T28] ? bpf_lsm_file_ioctl+0x5/0x10 [ 286.604322][ T28] ? security_file_ioctl+0x9d/0xb0 [ 286.609531][ T28] __se_sys_ioctl+0x83/0x170 [ 286.614142][ T28] do_syscall_64+0x3d/0xb0 [ 286.618582][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 286.624684][ T28] RIP: 0033:0x7f602745b319 [ 286.629299][ T28] RSP: 002b:00007ffea339e918 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 286.637789][ T28] RAX: ffffffffffffffda RBX: 00007f602749f870 RCX: 00007f602745b319 [ 286.645966][ T28] RDX: 0000000020000040 RSI: 0000000040305828 RDI: 0000000000000005 [ 286.654040][ T28] RBP: 0000000000000000 R08: 00007f60274c9ec0 R09: 00007f60274c9ec0 [ 286.662104][ T28] R10: 00007f60274c9ec0 R11: 0000000000000246 R12: 00007ffea339e940 [ 286.670130][ T28] R13: 0000000000000000 R14: 431bde82d7b634db R15: 0000000000000000 [ 286.678103][ T28] [ 286.681198][ T28] [ 286.681198][ T28] Showing all locks held in the system: [ 286.688972][ T28] 1 lock held by rcu_tasks_kthre/12: [ 286.694242][ T28] #0: ffffffff8d326fd0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 [ 286.704824][ T28] 1 lock held by rcu_tasks_trace/13: [ 286.710162][ T28] #0: ffffffff8d3277d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 [ 286.721212][ T28] 1 lock held by khungtaskd/28: [ 286.726063][ T28] #0: ffffffff8d326e00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 286.735538][ T28] 2 locks held by getty/4744: [ 286.740393][ T28] #0: ffff88802c12a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 [ 286.750276][ T28] #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 [ 286.760564][ T28] 3 locks held by syz-executor264/5074: [ 286.766217][ T28] #0: ffff88802200a460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x489/0x670 [ 286.775549][ T28] #1: ffff8880259ea218 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: ext4_fallocate+0x141/0x1ca0 [ 286.786518][ T28] #2: ffff8880259e9ee0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x3a4/0x610 [ 286.796971][ T28] [ 286.799350][ T28] ============================================= [ 286.799350][ T28] [ 286.807760][ T28] NMI backtrace for cpu 0 [ 286.812081][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc4-syzkaller #0 [ 286.820152][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 286.830197][ T28] Call Trace: [ 286.833483][ T28] [ 286.836401][ T28] dump_stack_lvl+0x1b1/0x290 [ 286.841094][ T28] ? nf_tcp_handle_invalid+0x630/0x630 [ 286.846544][ T28] ? panic+0x710/0x710 [ 286.850622][ T28] ? nmi_cpu_backtrace+0x205/0x4f0 [ 286.855789][ T28] nmi_cpu_backtrace+0x46f/0x4f0 [ 286.860743][ T28] ? vprintk_emit+0x109/0x1e0 [ 286.865433][ T28] ? nmi_trigger_cpumask_backtrace+0x420/0x420 [ 286.871593][ T28] ? _printk+0xc0/0x100 [ 286.875749][ T28] ? panic+0x710/0x710 [ 286.879812][ T28] ? __wake_up_klogd+0xcd/0x100 [ 286.884687][ T28] ? panic+0x710/0x710 [ 286.888750][ T28] ? nmi_trigger_cpumask_backtrace+0xc9/0x420 [ 286.894813][ T28] nmi_trigger_cpumask_backtrace+0x1ba/0x420 [ 286.900796][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 286.906919][ T28] watchdog+0xcd5/0xd20 [ 286.911111][ T28] kthread+0x266/0x300 [ 286.915194][ T28] ? hungtask_pm_notify+0x50/0x50 [ 286.920214][ T28] ? kthread_blkcg+0xd0/0xd0 [ 286.924803][ T28] ret_from_fork+0x1f/0x30 [ 286.929261][ T28] [ 286.932486][ T28] Sending NMI from CPU 0 to CPUs 1: [ 286.937710][ C1] NMI backtrace for cpu 1 [ 286.937719][ C1] CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 6.2.0-rc4-syzkaller #0 [ 286.937732][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 286.937741][ C1] Workqueue: events_unbound toggle_allocation_gate [ 286.937804][ C1] RIP: 0010:insn_get_prefixes+0xa7b/0x1900 [ 286.937828][ C1] Code: 00 00 c6 03 08 49 8d 6d 0c 48 89 e8 48 c1 e8 03 42 8a 04 30 84 c0 0f 85 03 08 00 00 c6 45 00 01 48 8b 44 24 30 42 80 3c 30 00 <48> 8b 5c 24 28 74 08 48 89 df e8 16 d4 32 f7 48 8b 2b 48 8d 5d 01 [ 286.937839][ C1] RSP: 0018:ffffc900000e7668 EFLAGS: 00000246 [ 286.937849][ C1] RAX: 1ffff9200001cf41 RBX: 0000000000000000 RCX: ffff88813fef0000 [ 286.937859][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000c [ 286.937866][ C1] RBP: ffffc900000e79ac R08: ffffffff8aaeb0c5 R09: ffffc900000e79a0 [ 286.937876][ C1] R10: fffff5200001cf3f R11: 1ffff9200001cf34 R12: ffffc900000e7a00 [ 286.937885][ C1] R13: ffffc900000e79a0 R14: dffffc0000000000 R15: 1ffff9200001cf3e [ 286.937895][ C1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 286.937905][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.937914][ C1] CR2: 00007fd21f7ba990 CR3: 000000000d08e000 CR4: 00000000003506e0 [ 286.937926][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 286.937933][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 286.937941][ C1] Call Trace: [ 286.937945][ C1] [ 286.937957][ C1] insn_get_opcode+0x1b2/0xa90 [ 286.937984][ C1] insn_get_modrm+0x221/0x760 [ 286.938008][ C1] insn_get_displacement+0x131/0x9a0 [ 286.938028][ C1] ? __get_immv32+0x15f/0x2c0 [ 286.938041][ C1] insn_get_immediate+0x427/0x12e0 [ 286.938053][ C1] ? trace_contention_end+0x72/0x1d0 [ 286.938069][ C1] insn_decode+0x3b0/0x550 [ 286.938081][ C1] ? kmem_cache_alloc_lru+0xb5/0x320 [ 286.938095][ C1] text_poke_loc_init+0xb3/0x500 [ 286.938130][ C1] ? text_poke_finish+0x30/0x30 [ 286.938154][ C1] arch_jump_label_transform_queue+0x70/0xd0 [ 286.938202][ C1] __jump_label_update+0x19b/0x3b0 [ 286.938242][ C1] static_key_disable_cpuslocked+0xc8/0x1b0 [ 286.938257][ C1] static_key_disable+0x16/0x20 [ 286.938270][ C1] toggle_allocation_gate+0x1a8/0x240 [ 286.938285][ C1] ? virt_to_slab+0x2c0/0x2c0 [ 286.938298][ C1] ? rcu_read_lock_sched_held+0x87/0x110 [ 286.938314][ C1] ? __bpf_trace_rcu_stall_warning+0x10/0x10 [ 286.938334][ C1] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 286.938354][ C1] ? do_raw_spin_unlock+0x134/0x8a0 [ 286.938376][ C1] process_one_work+0x877/0xdb0 [ 286.938416][ C1] ? worker_detach_from_pool+0x260/0x260 [ 286.938436][ C1] ? _raw_spin_lock_irq+0xba/0xf0 [ 286.938453][ C1] ? _raw_spin_lock_irqsave+0x100/0x100 [ 286.938475][ C1] worker_thread+0xb14/0x1330 [ 286.938505][ C1] kthread+0x266/0x300 [ 286.938518][ C1] ? rcu_lock_release+0x20/0x20 [ 286.938534][ C1] ? kthread_blkcg+0xd0/0xd0 [ 286.938548][ C1] ret_from_fork+0x1f/0x30 [ 286.938572][ C1] [ 286.938796][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 286.938807][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc4-syzkaller #0 [ 286.938828][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 286.938836][ T28] Call Trace: [ 286.938842][ T28] [ 286.938848][ T28] dump_stack_lvl+0x1b1/0x290 [ 286.938871][ T28] ? nf_tcp_handle_invalid+0x630/0x630 [ 286.938891][ T28] ? panic+0x710/0x710 [ 286.938911][ T28] ? vscnprintf+0x59/0x80 [ 286.938930][ T28] panic+0x2d6/0x710 [ 286.938943][ T28] ? schedule_preempt_disabled+0x20/0x20 [ 286.938961][ T28] ? nmi_trigger_cpumask_backtrace+0x2d0/0x420 [ 286.938983][ T28] ? memcpy_page_flushcache+0x100/0x100 [ 286.939002][ T28] ? nmi_trigger_cpumask_backtrace+0x2d0/0x420 [ 286.939021][ T28] ? nmi_trigger_cpumask_backtrace+0x34e/0x420 [ 286.939043][ T28] ? nmi_trigger_cpumask_backtrace+0x353/0x420 [ 286.939061][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 286.939081][ T28] watchdog+0xd15/0xd20 [ 286.939110][ T28] kthread+0x266/0x300 [ 286.939125][ T28] ? hungtask_pm_notify+0x50/0x50 [ 286.939143][ T28] ? kthread_blkcg+0xd0/0xd0 [ 286.939160][ T28] ret_from_fork+0x1f/0x30 [ 286.939192][ T28] [ 286.943224][ T28] Kernel Offset: disabled [ 287.359162][ T28] Rebooting in 86400 seconds..