[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.12' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 717.604262] INFO: task syz-executor329:8145 blocked for more than 140 seconds. [ 717.611727] Not tainted 4.19.211-syzkaller #0 [ 717.618310] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.626724] syz-executor329 D28248 8145 8140 0x00000004 [ 717.632356] Call Trace: [ 717.635259] __schedule+0x887/0x2040 [ 717.638977] ? io_schedule_timeout+0x140/0x140 [ 717.643541] ? _raw_spin_unlock+0x29/0x40 [ 717.648003] schedule+0x8d/0x1b0 [ 717.651372] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 717.657390] ? fuse_do_ioctl+0x1850/0x1850 [ 717.661624] ? wait_woken+0x250/0x250 [ 717.665718] ? fuse_writepage_locked+0xb63/0x1010 [ 717.670560] ? fuse_writepage_locked+0x1010/0x1010 [ 717.675783] fuse_launder_page+0xb6/0xe0 [ 717.679847] invalidate_inode_pages2_range+0x795/0x1110 [ 717.685550] ? clear_shadow_entry+0x170/0x170 [ 717.690055] ? fuse_file_alloc+0x1d9/0x270 [ 717.694623] ? do_raw_spin_unlock+0x171/0x230 [ 717.699119] ? _raw_spin_unlock+0x29/0x40 [ 717.703252] ? fuse_do_open+0x1c4/0x500 [ 717.707769] fuse_finish_open+0x2e2/0x590 [ 717.711925] fuse_open_common+0x254/0x2c0 [ 717.716387] do_dentry_open+0x4aa/0x1160 [ 717.720447] ? fuse_open_common+0x2c0/0x2c0 [ 717.725141] ? inode_permission.part.0+0x10c/0x450 [ 717.730071] ? chown_common+0x550/0x550 [ 717.734029] ? inode_permission+0x3d/0x140 [ 717.738656] path_openat+0x793/0x2df0 [ 717.742467] ? path_lookupat+0x8d0/0x8d0 [ 717.746909] ? mark_held_locks+0xf0/0xf0 [ 717.750971] do_filp_open+0x18c/0x3f0 [ 717.755029] ? may_open_dev+0xf0/0xf0 [ 717.758834] ? lock_downgrade+0x720/0x720 [ 717.762962] ? lock_acquire+0x170/0x3c0 [ 717.767221] ? __alloc_fd+0x34/0x570 [ 717.770954] ? do_raw_spin_unlock+0x171/0x230 [ 717.775736] ? _raw_spin_unlock+0x29/0x40 [ 717.779884] ? __alloc_fd+0x28d/0x570 [ 717.783671] do_sys_open+0x3b3/0x520 [ 717.787697] ? filp_open+0x70/0x70 [ 717.791327] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 717.797000] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.802016] ? do_syscall_64+0x21/0x620 [ 717.806288] do_syscall_64+0xf9/0x620 [ 717.810181] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.815639] RIP: 0033:0x7f5a26ee94c9 [ 717.819352] Code: Bad RIP value. [ 717.822696] RSP: 002b:00007f5a26e792f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 717.830703] RAX: ffffffffffffffda RBX: 00007f5a26f7a4d0 RCX: 00007f5a26ee94c9 [ 717.838187] RDX: 00007f5a26ee94c9 RSI: 0000000000000000 RDI: 0000000020000140 [ 717.845710] RBP: 00007f5a26f47164 R08: 0000000000000000 R09: 0000000000000000 [ 717.852979] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 717.860542] R13: 00007f5a26f43158 R14: 00007f5a26f45160 R15: 00007f5a26f7a4d8 [ 717.868045] [ 717.868045] Showing all locks held in the system: [ 717.874669] 1 lock held by khungtaskd/1568: [ 717.878983] #0: 0000000076d50f1f (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 717.887900] 1 lock held by systemd-journal/4692: [ 717.892651] #0: 000000000a6b396c (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 [ 717.902178] 1 lock held by in:imklog/7834: [ 717.906658] #0: 00000000a07657c1 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 717.914849] 2 locks held by syz-executor329/8145: [ 717.919671] #0: 00000000da8e490c (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 717.927903] #1: 000000004d8d4eec (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 717.937735] [ 717.939357] ============================================= [ 717.939357] [ 717.946632] NMI backtrace for cpu 0 [ 717.950257] CPU: 0 PID: 1568 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 717.957701] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 717.967037] Call Trace: [ 717.969610] dump_stack+0x1fc/0x2ef [ 717.973219] nmi_cpu_backtrace.cold+0x63/0xa2 [ 717.977698] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.982192] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 717.987467] watchdog+0x991/0xe60 [ 717.990921] ? reset_hung_task_detector+0x30/0x30 [ 717.995752] kthread+0x33f/0x460 [ 717.999104] ? kthread_park+0x180/0x180 [ 718.003059] ret_from_fork+0x24/0x30 [ 718.006864] Sending NMI from CPU 0 to CPUs 1: [ 718.011875] NMI backtrace for cpu 1 [ 718.011882] CPU: 1 PID: 4692 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 [ 718.011888] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 718.011892] RIP: 0010:preempt_count_sub+0x53/0x150 [ 718.011903] Code: 84 d2 0f 85 ef 00 00 00 8b 0d 59 ca e2 0b 85 c9 75 18 65 8b 05 3e 72 c0 7e 25 ff ff ff 7f 39 c3 7f 1a 81 fb fe 00 00 00 76 6a <65> 8b 05 26 72 c0 7e f7 db 65 01 1d 1d 72 c0 7e 5b c3 e8 b6 e4 31 [ 718.011907] RSP: 0018:ffff8880a0e079b0 EFLAGS: 00000202 [ 718.011914] RAX: 0000000080000001 RBX: 0000000000000001 RCX: 0000000000000000 [ 718.011919] RDX: 0000000000000004 RSI: ffff8880a0e07950 RDI: 0000000000000001 [ 718.011924] RBP: ffff8880a0e07e10 R08: 0000000000000001 R09: 0000000000000001 [ 718.011929] R10: ffff8880a0e07b4f R11: 0000000000074071 R12: ffff8880a0e00000 [ 718.011934] R13: ffff8880a0e07b25 R14: ffff8880a0e07af0 R15: ffffffff8b99d036 [ 718.011939] FS: 00007faf50fa48c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 718.011944] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.011949] CR2: 00007faf4e375000 CR3: 00000000a0c78000 CR4: 00000000003406e0 [ 718.011954] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.011959] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.011961] Call Trace: [ 718.011965] unwind_next_frame+0xeee/0x1400 [ 718.011969] ? kmem_cache_alloc+0x122/0x370 [ 718.011972] ? deref_stack_reg+0x1d0/0x1d0 [ 718.011975] ? __unwind_start+0x5b8/0x960 [ 718.011979] ? unwind_next_frame+0x1400/0x1400 [ 718.011983] ? is_bpf_text_address+0xfc/0x1b0 [ 718.011986] ? kernel_text_address+0xbd/0xf0 [ 718.011990] ? kmem_cache_alloc+0x122/0x370 [ 718.011993] __save_stack_trace+0x9f/0x190 [ 718.011997] ? __lock_acquire+0x6de/0x3ff0 [ 718.012000] ? getname_flags+0xce/0x590 [ 718.012004] kasan_kmalloc+0xeb/0x160 [ 718.012007] ? kmem_cache_alloc+0x122/0x370 [ 718.012011] ? getname_flags+0xce/0x590 [ 718.012014] ? do_sys_open+0x26c/0x520 [ 718.012017] ? do_syscall_64+0xf9/0x620 [ 718.012021] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.012025] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 718.012029] ? __put_seccomp_filter+0xa0/0xa0 [ 718.012033] ? cache_alloc_refill+0x2f8/0x340 [ 718.012036] ? lock_downgrade+0x720/0x720 [ 718.012040] ? do_raw_spin_lock+0xcb/0x220 [ 718.012043] ? do_raw_spin_unlock+0x171/0x230 [ 718.012047] ? _raw_spin_unlock+0x29/0x40 [ 718.012051] ? cache_alloc_refill+0x2f8/0x340 [ 718.012054] ? kmem_cache_alloc+0x2b1/0x370 [ 718.012058] kmem_cache_alloc+0x122/0x370 [ 718.012061] getname_flags+0xce/0x590 [ 718.012064] do_sys_open+0x26c/0x520 [ 718.012067] ? filp_open+0x70/0x70 [ 718.012071] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.012075] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.012079] ? do_syscall_64+0x21/0x620 [ 718.012082] do_syscall_64+0xf9/0x620 [ 718.012086] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.012089] RIP: 0033:0x7faf50533840 [ 718.012100] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 [ 718.012104] RSP: 002b:00007ffd8f28d7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 718.012112] RAX: ffffffffffffffda RBX: 00007ffd8f28dac0 RCX: 00007faf50533840 [ 718.012117] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055fbea69c4e0 [ 718.012122] RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff [ 718.012127] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 718.012132] R13: 000055fbea691040 R14: 00007ffd8f28da80 R15: 000055fbea69c530 [ 718.013343] Kernel panic - not syncing: hung_task: blocked tasks [ 718.359638] CPU: 0 PID: 1568 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.367063] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 718.376394] Call Trace: [ 718.378967] dump_stack+0x1fc/0x2ef [ 718.382573] panic+0x26a/0x50e [ 718.385749] ? __warn_printk+0xf3/0xf3 [ 718.389616] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.394109] ? ___preempt_schedule+0x16/0x18 [ 718.398505] ? watchdog+0x991/0xe60 [ 718.402109] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.407553] watchdog+0x9a2/0xe60 [ 718.410988] ? reset_hung_task_detector+0x30/0x30 [ 718.415869] kthread+0x33f/0x460 [ 718.419212] ? kthread_park+0x180/0x180 [ 718.423164] ret_from_fork+0x24/0x30 [ 718.427122] Kernel Offset: disabled [ 718.430745] Rebooting in 86400 seconds..