[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.56' (ECDSA) to the list of known hosts. syzkaller login: [ 29.880327] IPVS: ftp: loaded support on port[0] = 21 executing program [ 30.022569] gfs2: fsid=loop0: Trying to join cluster "lock_nolock", "loop0" [ 30.029904] gfs2: fsid=loop0: Now mounting FS... [ 30.047684] gfs2: fsid=loop0.0: journal 0 mapped with 3 extents [ 30.053899] gfs2: fsid=loop0.0: jid=0, already locked for use [ 30.060020] gfs2: fsid=loop0.0: jid=0: Looking at journal... [ 30.068960] gfs2: fsid=loop0.0: jid=0: Done [ 30.073573] gfs2: fsid=loop0.0: first mount done, others may mount [ 30.114389] syz-executor130[8003]: segfault at 0 ip 00007fa457a45af0 sp 00007ffe68e4d6c8 error 4 in syz-executor1304870832[7fa4579df000+88000] [ 30.200710] ------------[ cut here ]------------ [ 30.205646] WARNING: CPU: 0 PID: 8003 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 30.215348] Kernel panic - not syncing: panic_on_warn set ... [ 30.215348] [ 30.222711] CPU: 0 PID: 8003 Comm: syz-executor130 Not tainted 4.14.302-syzkaller #0 [ 30.230577] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 30.239911] Call Trace: [ 30.242484] dump_stack+0x1b2/0x281 [ 30.246093] panic+0x1f9/0x42d [ 30.249264] ? add_taint.cold+0x16/0x16 [ 30.253218] ? account_page_dirtied+0x8df/0xbb0 [ 30.257873] ? account_page_dirtied+0x8df/0xbb0 [ 30.262523] __warn.cold+0x20/0x44 [ 30.266039] ? ist_end_non_atomic+0x10/0x10 [ 30.270336] ? account_page_dirtied+0x8df/0xbb0 [ 30.274987] report_bug+0x208/0x250 [ 30.278597] do_error_trap+0x195/0x2d0 [ 30.282489] ? math_error+0x2d0/0x2d0 [ 30.286284] ? trace_hardirqs_on+0x10/0x10 [ 30.290768] ? trace_hardirqs_on+0x10/0x10 [ 30.294989] ? finish_task_switch+0x14d/0x610 [ 30.299462] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.305066] invalid_op+0x1b/0x40 [ 30.308513] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 30.313786] RSP: 0018:ffff8880b3457780 EFLAGS: 00010097 [ 30.319129] RAX: ffff88809c1061c0 RBX: ffff8880aecb8340 RCX: 1ffffffff127a6e8 [ 30.326514] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000082 [ 30.334027] RBP: ffff8880b1fd7ae8 R08: ffffffff8b9a9110 R09: 00000000000c0238 [ 30.341278] R10: ffff88809c106ac0 R11: ffff88809c1061c0 R12: ffffea000268a680 [ 30.348529] R13: ffff8880b1fd7958 R14: ffff8880b1fd7958 R15: ffffea000268a6a0 [ 30.355796] __set_page_dirty+0x77/0x2a0 [ 30.359841] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.365268] mark_buffer_dirty+0x307/0x480 [ 30.369485] gfs2_unpin+0xc7/0xeb0 [ 30.373006] ? log_write_header+0x4c2/0x1230 [ 30.377395] buf_lo_after_commit+0x12d/0x1f0 [ 30.381785] ? gfs2_unpin+0xeb0/0xeb0 [ 30.385576] gfs2_log_flush+0x7fc/0x1ad0 [ 30.389645] ? gfs2_log_shutdown+0x3d0/0x3d0 [ 30.394043] ? mark_held_locks+0xa6/0xf0 [ 30.398088] ? kfree+0x14a/0x250 [ 30.401433] ? unregister_shrinker+0x170/0x210 [ 30.405992] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 30.411315] gfs2_kill_sb+0x54/0x1a0 [ 30.415012] deactivate_locked_super+0x6c/0xd0 [ 30.419577] deactivate_super+0x7f/0xa0 [ 30.423537] cleanup_mnt+0x186/0x2c0 [ 30.427233] task_work_run+0x11f/0x190 [ 30.431125] do_exit+0xa44/0x2850 [ 30.434564] ? mm_update_next_owner+0x5b0/0x5b0 [ 30.439219] do_group_exit+0x100/0x2e0 [ 30.443089] get_signal+0x38d/0x1ca0 [ 30.446929] do_signal+0x7c/0x1550 [ 30.450592] ? is_prefetch.part.0+0x2f0/0x2f0 [ 30.455081] ? vprintk_func+0x60/0x160 [ 30.458970] ? setup_sigcontext+0x820/0x820 [ 30.463282] ? log_store.cold+0x16/0x16 [ 30.467354] ? up_read+0x17/0x30 [ 30.470701] ? printk+0x9e/0xbc [ 30.474078] ? __bad_area_nosemaphore+0x1d6/0x2c0 [ 30.478924] ? __do_page_fault+0x159/0xad0 [ 30.483139] ? exit_to_usermode_loop+0x41/0x200 [ 30.487799] exit_to_usermode_loop+0x160/0x200 [ 30.492361] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.497184] prepare_exit_to_usermode+0x1af/0x210 [ 30.502008] ? page_fault+0x2f/0x50 [ 30.505616] retint_user+0x8/0x18 [ 30.509051] RIP: 0033:0x7fa457a45af0 [ 30.512752] RSP: 002b:00007ffe68e4d6c8 EFLAGS: 00010246 [ 30.518093] RAX: 0000000000000000 RBX: 00000000000000e0 RCX: 0000000000000000 [ 30.525337] RDX: 00000000000000e0 RSI: 00000000000000e0 RDI: 0000000000000000 [ 30.532585] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.539832] R10: 00000000000000c0 R11: 00000000000000e0 R12: 00000000ffffffff [ 30.547080] R13: 00007ffe68e4d7a0 R14: 0000000000000000 R15: 0000000000000000 [ 30.554735] Kernel Offset: disabled [ 30.558471] Rebooting in 86400 seconds..