[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.115' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 118.642654] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 118.650555] gfs2: fsid=syz:syz: Now mounting FS... [ 118.666703] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents [ 118.673052] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 118.679859] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... executing program [ 118.688953] gfs2: fsid=syz:syz.0: jid=0: Done [ 118.693574] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 118.734174] gfs2: fsid=syz:syz.0: found 1 quota changes executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 178.997852] ------------[ cut here ]------------ [ 179.002790] WARNING: CPU: 1 PID: 7996 at include/linux/backing-dev.h:335 account_page_dirtied+0x8df/0xbb0 [ 179.012494] Kernel panic - not syncing: panic_on_warn set ... [ 179.012494] [ 179.019941] CPU: 1 PID: 7996 Comm: gfs2_quotad Not tainted 4.14.302-syzkaller #0 [ 179.027460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 179.036801] Call Trace: [ 179.039470] dump_stack+0x1b2/0x281 [ 179.043094] panic+0x1f9/0x42d [ 179.046278] ? add_taint.cold+0x16/0x16 [ 179.050245] ? account_page_dirtied+0x8df/0xbb0 [ 179.054987] ? account_page_dirtied+0x8df/0xbb0 [ 179.059646] __warn.cold+0x20/0x44 [ 179.063174] ? ist_end_non_atomic+0x10/0x10 [ 179.067471] ? account_page_dirtied+0x8df/0xbb0 [ 179.072116] report_bug+0x208/0x250 [ 179.075724] do_error_trap+0x195/0x2d0 [ 179.079585] ? math_error+0x2d0/0x2d0 [ 179.083369] ? trace_hardirqs_on+0x10/0x10 [ 179.087580] ? trace_hardirqs_on+0x10/0x10 [ 179.091879] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 179.096702] invalid_op+0x1b/0x40 [ 179.100138] RIP: 0010:account_page_dirtied+0x8df/0xbb0 [ 179.105387] RSP: 0018:ffff8880954ef968 EFLAGS: 00010097 [ 179.110725] RAX: ffff8880b2ec0300 RBX: ffff8880af351480 RCX: 1ffffffff127a6e8 [ 179.117972] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000082 [ 179.125215] RBP: ffff8880a685caa8 R08: ffffffff8b9df548 R09: 00000000000c0238 [ 179.132549] R10: ffff8880b2ec0c00 R11: ffff8880b2ec0300 R12: ffffea0002acea80 [ 179.139794] R13: ffff8880a685c918 R14: ffff8880a685c918 R15: ffffea0002aceaa0 [ 179.147057] ? account_page_dirtied+0x8df/0xbb0 [ 179.151700] __set_page_dirty+0x77/0x2a0 [ 179.155741] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 179.161165] mark_buffer_dirty+0x307/0x480 [ 179.165377] gfs2_unpin+0xc7/0xeb0 [ 179.168892] buf_lo_after_commit+0x12d/0x1f0 [ 179.173274] ? gfs2_unpin+0xeb0/0xeb0 [ 179.177076] gfs2_log_flush+0x7fc/0x1ad0 [ 179.181119] ? gfs2_log_shutdown+0x3d0/0x3d0 [ 179.185560] ? mark_held_locks+0xa6/0xf0 [ 179.189596] ? kfree+0x14a/0x250 [ 179.192934] ? do_sync+0x466/0xba0 [ 179.196450] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 179.201444] do_sync+0x4bb/0xba0 [ 179.204789] ? do_qc+0x5f0/0x5f0 [ 179.208137] gfs2_quota_sync+0x4f1/0x690 [ 179.212182] gfs2_quotad+0x23f/0x810 [ 179.215877] ? gfs2_wake_up_statfs+0x80/0x80 [ 179.220265] ? wait_woken+0x230/0x230 [ 179.224052] ? gfs2_wake_up_statfs+0x80/0x80 [ 179.228525] kthread+0x30d/0x420 [ 179.231866] ? kthread_create_on_node+0xd0/0xd0 [ 179.236513] ret_from_fork+0x24/0x30 [ 179.240449] Kernel Offset: disabled [ 179.244150] Rebooting in 86400 seconds..