[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts. syzkaller login: [ 34.126885] IPVS: ftp: loaded support on port[0] = 21 executing program [ 34.266616] gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" [ 34.277684] gfs2: fsid=syz:syz: Now mounting FS... [ 34.291862] gfs2: fsid=syz:syz.0: journal 0 mapped with 3 extents [ 34.298194] gfs2: fsid=syz:syz.0: jid=0, already locked for use [ 34.304421] gfs2: fsid=syz:syz.0: jid=0: Looking at journal... [ 34.315656] gfs2: fsid=syz:syz.0: jid=0: Done [ 34.320648] gfs2: fsid=syz:syz.0: first mount done, others may mount [ 34.391149] WARNING: CPU: 0 PID: 8092 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0 [ 34.401116] Kernel panic - not syncing: panic_on_warn set ... [ 34.401116] [ 34.408462] CPU: 0 PID: 8092 Comm: syz-executor209 Not tainted 4.19.211-syzkaller #0 [ 34.416333] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 34.425684] Call Trace: [ 34.428269] dump_stack+0x1fc/0x2ef [ 34.431889] panic+0x26a/0x50e [ 34.435066] ? __warn_printk+0xf3/0xf3 [ 34.438946] ? account_page_dirtied+0x8cc/0xbb0 [ 34.443616] ? __probe_kernel_read+0x130/0x1b0 [ 34.448189] ? __warn.cold+0x5/0x5a [ 34.451801] ? __warn+0xe4/0x200 [ 34.455157] ? account_page_dirtied+0x8cc/0xbb0 [ 34.459808] __warn.cold+0x20/0x5a [ 34.463344] ? account_page_dirtied+0x8cc/0xbb0 [ 34.467994] report_bug+0x262/0x2b0 [ 34.471604] do_error_trap+0x1d7/0x310 [ 34.475475] ? math_error+0x310/0x310 [ 34.479257] ? mark_held_locks+0xf0/0xf0 [ 34.483313] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 34.488413] ? error_entry+0x72/0xd0 [ 34.492122] ? trace_hardirqs_off_caller+0x2c/0x210 [ 34.497123] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.501950] invalid_op+0x14/0x20 [ 34.505384] RIP: 0010:account_page_dirtied+0x8cc/0xbb0 [ 34.510674] Code: 88 01 00 00 be ff ff ff ff 48 8d 78 70 e8 ec e1 ca ff 31 ff 89 c3 89 c6 e8 f1 b3 e2 ff 85 db 0f 85 39 f9 ff ff e8 74 b2 e2 ff <0f> 0b e9 2d f9 ff ff e8 68 b2 e2 ff 4c 89 e6 4c 89 ef e8 9d b3 2d [ 34.529570] RSP: 0018:ffff8880a2447940 EFLAGS: 00010093 [ 34.534915] RAX: ffff88809855a3c0 RBX: 0000000000000000 RCX: ffffffff817fd2ef [ 34.542166] RDX: 0000000000000000 RSI: ffffffff817fd2fc RDI: 0000000000000005 [ 34.549427] RBP: ffff8880b5402360 R08: 0000000000000001 R09: 0000000000000000 [ 34.556676] R10: 0000000000000005 R11: 0000000000000000 R12: ffffea0002779200 [ 34.563924] R13: ffff8880b54021d8 R14: ffff8880afc38de0 R15: ffffea0002779208 [ 34.571182] ? account_page_dirtied+0x8bf/0xbb0 [ 34.575831] ? account_page_dirtied+0x8cc/0xbb0 [ 34.580483] __set_page_dirty+0x7f/0x3e0 [ 34.584529] ? lock_page_memcg+0xa7/0x220 [ 34.588656] mark_buffer_dirty+0x424/0x5c0 [ 34.592877] gfs2_unpin+0xd6/0xe80 [ 34.596401] ? log_write_header+0x29b/0x1010 [ 34.600812] ? wait_woken+0x250/0x250 [ 34.604634] buf_lo_after_commit+0x140/0x210 [ 34.609025] ? gfs2_unpin+0xe80/0xe80 [ 34.612805] gfs2_log_flush+0x9fa/0x1ef0 [ 34.616847] ? lock_acquire+0x170/0x3c0 [ 34.620836] ? gfs2_log_shutdown+0x3f0/0x3f0 [ 34.625258] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 34.630350] ? debug_check_no_obj_freed+0x201/0x490 [ 34.635354] ? mark_held_locks+0xa6/0xf0 [ 34.639394] ? kfree+0x110/0x210 [ 34.642743] ? unregister_shrinker+0x1cb/0x300 [ 34.647304] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.651868] gfs2_kill_sb+0x54/0x1a0 [ 34.655566] deactivate_locked_super+0x94/0x160 [ 34.660211] deactivate_super+0x174/0x1a0 [ 34.664340] ? deactivate_locked_super+0x160/0x160 [ 34.669253] ? dput+0x31/0x640 [ 34.672428] cleanup_mnt+0x1a8/0x290 [ 34.676124] task_work_run+0x148/0x1c0 [ 34.679992] do_exit+0xbf3/0x2be0 [ 34.683434] ? lock_downgrade+0x720/0x720 [ 34.687577] ? mm_update_next_owner+0x650/0x650 [ 34.692243] ? up_read+0x17/0x110 [ 34.695698] ? __do_page_fault+0x180/0xd60 [ 34.699915] do_group_exit+0x125/0x310 [ 34.703784] __x64_sys_exit_group+0x3a/0x50 [ 34.708089] do_syscall_64+0xf9/0x620 [ 34.711887] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.717165] RIP: 0033:0x7f45b81ea9d9 [ 34.720860] Code: Bad RIP value. [ 34.724202] RSP: 002b:00007ffecac84e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 34.731922] RAX: ffffffffffffffda RBX: 00007f45b8272330 RCX: 00007f45b81ea9d9 [ 34.739180] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 34.746434] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f45b826ce40 [ 34.753696] R10: 00007ffecac84da0 R11: 0000000000000246 R12: 00007f45b8272330 [ 34.760952] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 34.768666] Kernel Offset: disabled [ 34.772362] Rebooting in 86400 seconds..