[ 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 '10.128.0.185' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 805.859213] XFS (loop0): Mounting V4 Filesystem [ 805.864430] XFS (loop0): Log size 128 blocks too small, minimum size is 2880 blocks [ 805.873244] XFS (loop0): Log size out of supported range. [ 805.878779] XFS (loop0): Continuing onwards, but if log hangs are experienced then please report this message in the bug report. [ 805.908083] XFS (loop0): Starting recovery (logdev: internal) [ 1001.335114] INFO: task syz-executor239:7987 blocked for more than 140 seconds. [ 1001.342527] Not tainted 4.14.302-syzkaller #0 [ 1001.348637] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.357032] syz-executor239 D27312 7987 7986 0x00000004 [ 1001.362652] Call Trace: [ 1001.365803] __schedule+0x88b/0x1de0 [ 1001.369505] ? io_schedule_timeout+0x140/0x140 [ 1001.374064] schedule+0x8d/0x1b0 [ 1001.378177] xlog_grant_head_wait+0x12f/0xc10 [ 1001.382660] xlog_grant_head_check+0x357/0x3a0 [ 1001.387893] ? xlog_grant_head_wait+0xc10/0xc10 [ 1001.392549] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 1001.398578] xfs_log_reserve+0x2fb/0x9e0 [ 1001.402629] ? percpu_counter_add_batch+0xf8/0x160 [ 1001.408109] ? xlog_ticket_alloc+0x450/0x450 [ 1001.412502] ? xfs_mod_fdblocks+0xd5/0x3c0 [ 1001.417276] xfs_trans_reserve+0x5bb/0x940 [ 1001.421497] xfs_trans_alloc+0x1fc/0x320 [ 1001.426090] xlog_recover_process_intents+0x1d2/0x3f0 [ 1001.431265] ? xlog_recover_process_bui+0x90/0x90 [ 1001.436669] ? __wake_up_bit+0xd0/0xd0 [ 1001.440549] ? xfs_iget+0x10ba/0x28d0 [ 1001.444329] xlog_recover_finish+0x52/0x210 [ 1001.449456] xfs_log_mount_finish+0xd9/0x2d0 [ 1001.453851] ? xfs_iunlock+0x21a/0x3b0 [ 1001.458329] xfs_mountfs+0xeef/0x1f40 [ 1001.462120] ? xfs_filestream_get_parent+0xd0/0xd0 [ 1001.467587] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 1001.473023] ? xfs_default_resblks+0x60/0x60 [ 1001.477984] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 1001.482988] ? xfs_mru_cache_create+0x426/0x540 [ 1001.488226] xfs_fs_fill_super+0xb7a/0x1380 [ 1001.492536] mount_bdev+0x2b3/0x360 [ 1001.497286] ? xfs_parseargs+0x1130/0x1130 [ 1001.501507] mount_fs+0x92/0x2a0 [ 1001.504855] vfs_kern_mount.part.0+0x5b/0x470 [ 1001.510070] do_mount+0xe65/0x2a30 [ 1001.513596] ? retint_kernel+0x2d/0x2d [ 1001.518098] ? copy_mount_string+0x40/0x40 [ 1001.522318] ? memset+0x20/0x40 [ 1001.526152] ? copy_mount_options+0x1fa/0x2f0 [ 1001.530633] ? copy_mnt_ns+0xa30/0xa30 [ 1001.534498] SyS_mount+0xa8/0x120 [ 1001.538720] ? copy_mnt_ns+0xa30/0xa30 [ 1001.542593] do_syscall_64+0x1d5/0x640 [ 1001.547017] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 1001.552190] RIP: 0033:0x7fe08f9bb60a [ 1001.556424] RSP: 002b:00007ffc7f434638 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 1001.564117] RAX: ffffffffffffffda RBX: 00646975756f6e2c RCX: 00007fe08f9bb60a [ 1001.571947] RDX: 000000002000bb00 RSI: 0000000020000000 RDI: 00007ffc7f434650 [ 1001.579593] RBP: 00007ffc7f434650 R08: 00007ffc7f434690 R09: 0000000000000002 [ 1001.587203] R10: 0000000000008000 R11: 0000000000000206 R12: 0000000000000004 [ 1001.594462] R13: 00005555569012c0 R14: 0000000000008000 R15: 00007ffc7f434690 [ 1001.602377] [ 1001.602377] Showing all locks held in the system: [ 1001.609073] 1 lock held by khungtaskd/1533: [ 1001.613426] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1001.622536] 2 locks held by syz-executor239/7987: [ 1001.627580] #0: (&type->s_umount_key#46/1){+.+.}, at: [] sget_userns+0x556/0xc10 [ 1001.636945] #1: (sb_internal#2){.+.+}, at: [] xfs_trans_alloc+0x259/0x320 [ 1001.645744] [ 1001.647350] ============================================= [ 1001.647350] [ 1001.654424] NMI backtrace for cpu 0 [ 1001.658170] CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 1001.665592] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.674922] Call Trace: [ 1001.677493] dump_stack+0x1b2/0x281 [ 1001.681099] nmi_cpu_backtrace.cold+0x57/0x93 [ 1001.685572] ? irq_force_complete_move+0x350/0x350 [ 1001.690476] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 1001.695729] watchdog+0x5b9/0xb40 [ 1001.699160] ? hungtask_pm_notify+0x50/0x50 [ 1001.703455] kthread+0x30d/0x420 [ 1001.706799] ? kthread_create_on_node+0xd0/0xd0 [ 1001.711444] ret_from_fork+0x24/0x30 [ 1001.715219] Sending NMI from CPU 0 to CPUs 1: [ 1001.720068] NMI backtrace for cpu 1 [ 1001.720072] CPU: 1 PID: 4610 Comm: systemd-journal Not tainted 4.14.302-syzkaller #0 [ 1001.720077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.720080] task: ffff8880a1c824c0 task.stack: ffff8880a1c88000 [ 1001.720082] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 [ 1001.720085] RSP: 0018:ffff8880a1c8fb20 EFLAGS: 00000246 [ 1001.720090] RAX: 0000000000000000 RBX: ffff88808e951040 RCX: 000000000000002e [ 1001.720093] RDX: 0000000000000000 RSI: ffff8880a1c82d48 RDI: ffff88808e951040 [ 1001.720097] RBP: ffff88810e951040 R08: ffffea0002c17800 R09: 0000000000000000 [ 1001.720100] R10: 0000000000000000 R11: 0000000000000000 R12: 000000008e951040 [ 1001.720103] R13: ffff8880a1c8fb80 R14: 0000000000000000 R15: 0000000000000282 [ 1001.720107] FS: 00007f7efa16f8c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 1001.720110] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1001.720113] CR2: 00007f7ef7542008 CR3: 00000000a1d9b000 CR4: 00000000003406e0 [ 1001.720117] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1001.720120] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1001.720122] Call Trace: [ 1001.720124] __phys_addr+0x73/0xe0 [ 1001.720126] qlist_free_all+0xbb/0x140 [ 1001.720128] quarantine_reduce+0x185/0x200 [ 1001.720130] kasan_kmalloc+0xa2/0x160 [ 1001.720133] ? __lock_acquire+0x5fc/0x3f20 [ 1001.720135] ? seccomp_run_filters+0x151/0x540 [ 1001.720137] ? __put_seccomp_filter+0x90/0x90 [ 1001.720140] ? debug_check_no_obj_freed+0x2c0/0x680 [ 1001.720142] ? trace_hardirqs_on+0x10/0x10 [ 1001.720144] ? lock_acquire+0x170/0x3f0 [ 1001.720146] ? lock_downgrade+0x740/0x740 [ 1001.720149] ? __seccomp_filter+0xbd/0xdd0 [ 1001.720151] ? seccomp_send_sigsys+0x180/0x180 [ 1001.720154] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1001.720157] ? debug_check_no_obj_freed+0x2c0/0x680 [ 1001.720159] ? fs_reclaim_release+0xd0/0x110 [ 1001.720161] ? kmem_cache_alloc+0x2c8/0x3c0 [ 1001.720164] kmem_cache_alloc+0x111/0x3c0 [ 1001.720166] prepare_creds+0x39/0x490 [ 1001.720168] SyS_faccessat+0x7b/0x680 [ 1001.720170] ? SyS_fallocate+0x80/0x80 [ 1001.720172] ? do_syscall_64+0x4c/0x640 [ 1001.720175] ? SyS_faccessat+0x680/0x680 [ 1001.720177] do_syscall_64+0x1d5/0x640 [ 1001.720180] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 1001.720182] RIP: 0033:0x7f7ef942a9c7 [ 1001.720184] RSP: 002b:00007ffccc26a5c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 1001.720190] RAX: ffffffffffffffda RBX: 00007ffccc26d5f0 RCX: 00007f7ef942a9c7 [ 1001.720194] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055a4ff6739a3 [ 1001.720197] RBP: 00007ffccc26a710 R08: 000055a4ff6693e5 R09: 0000000000000018 [ 1001.720201] R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 [ 1001.720204] R13: 0000000000000000 R14: 000055a5015468a0 R15: 00007ffccc26ac00 [ 1001.720206] Code: ff ff 48 89 df e8 21 c1 29 00 e9 9f fe ff ff 4c 89 e7 e8 14 c1 29 00 e9 2c fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <65> 48 8b 04 25 c0 7f 02 00 48 85 c0 74 1a 65 8b 15 fb 24 ad 7e [ 1001.721236] Kernel panic - not syncing: hung_task: blocked tasks [ 1002.011056] CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 1002.018477] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1002.027813] Call Trace: [ 1002.030382] dump_stack+0x1b2/0x281 [ 1002.033985] panic+0x1f9/0x42d [ 1002.037150] ? add_taint.cold+0x16/0x16 [ 1002.041117] watchdog+0x5ca/0xb40 [ 1002.044562] ? hungtask_pm_notify+0x50/0x50 [ 1002.048864] kthread+0x30d/0x420 [ 1002.052212] ? kthread_create_on_node+0xd0/0xd0 [ 1002.056862] ret_from_fork+0x24/0x30 [ 1002.060836] Kernel Offset: disabled [ 1002.064452] Rebooting in 86400 seconds..