[ 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 '10.128.15.210' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.779016] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 35.787469] F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock [ 35.802061] F2FS-fs (loop0): invalid crc value [ 35.814750] attempt to access beyond end of device [ 35.819814] loop0: rw=12288, want=24584, limit=24560 [ 35.825809] attempt to access beyond end of device [ 35.830825] loop0: rw=12288, want=24592, limit=24560 [ 35.836475] attempt to access beyond end of device [ 35.841479] loop0: rw=12288, want=24600, limit=24560 [ 35.847627] attempt to access beyond end of device [ 35.852626] loop0: rw=12288, want=24608, limit=24560 [ 35.857986] attempt to access beyond end of device [ 35.862990] loop0: rw=12288, want=24616, limit=24560 [ 35.868386] attempt to access beyond end of device [ 35.873382] loop0: rw=12288, want=24624, limit=24560 [ 35.878777] attempt to access beyond end of device [ 35.883760] loop0: rw=12288, want=24632, limit=24560 [ 35.889145] attempt to access beyond end of device [ 35.894382] loop0: rw=12288, want=24640, limit=24560 [ 35.899655] attempt to access beyond end of device [ 35.904735] loop0: rw=12288, want=24584, limit=24560 [ 35.909872] attempt to access beyond end of device [ 35.914855] loop0: rw=12288, want=24584, limit=24560 [ 35.920097] attempt to access beyond end of device [ 35.925087] loop0: rw=12288, want=24584, limit=24560 [ 35.930208] attempt to access beyond end of device [ 35.935194] loop0: rw=12288, want=24584, limit=24560 [ 35.940348] attempt to access beyond end of device [ 35.945339] loop0: rw=12288, want=24584, limit=24560 [ 35.950458] attempt to access beyond end of device [ 35.955526] loop0: rw=12288, want=24584, limit=24560 [ 35.960647] attempt to access beyond end of device [ 35.965635] loop0: rw=12288, want=24584, limit=24560 [ 35.970758] attempt to access beyond end of device [ 35.975741] loop0: rw=12288, want=24584, limit=24560 [ 35.980877] attempt to access beyond end of device [ 35.986041] loop0: rw=12288, want=24584, limit=24560 [ 35.991454] ------------[ cut here ]------------ [ 35.996193] kernel BUG at fs/f2fs/checkpoint.c:127! [ 36.001289] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 36.006755] CPU: 1 PID: 8128 Comm: syz-executor189 Not tainted 4.19.211-syzkaller #0 [ 36.014702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 36.024149] RIP: 0010:f2fs_get_meta_page_nofail+0x12d/0x150 [ 36.029857] Code: e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 75 23 83 8b 84 00 00 00 08 4c 89 e6 4c 89 ef e8 3b d2 03 05 48 89 ef e8 f3 a7 02 00 <0f> 0b e8 1c e4 82 fe eb 80 be 04 00 00 00 e8 00 e8 82 fe eb d1 66 [ 36.048743] RSP: 0018:ffff8880953d78d0 EFLAGS: 00010293 [ 36.054089] RAX: ffff888096f845c0 RBX: ffff8880b0c3aa00 RCX: ffffffff831805c1 [ 36.061355] RDX: 0000000000000000 RSI: ffffffff83157e3d RDI: 0000000000000005 [ 36.068625] RBP: ffff8880969a8300 R08: ffffffff8cd2f9a0 R09: 0000000000000001 [ 36.075874] R10: 0000000000000005 R11: 0000000000074071 R12: 0000000000000286 [ 36.083122] R13: ffff8880969a87f8 R14: 0000000000000000 R15: ffff8880969a8300 [ 36.090373] FS: 0000555557342300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.098575] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.104455] CR2: 00007fe30a3c5000 CR3: 00000000b00f2000 CR4: 00000000003406e0 [ 36.111712] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.118966] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.126220] Call Trace: [ 36.128797] __f2fs_build_free_nids+0x338/0x1020 [ 36.133532] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 36.138528] f2fs_build_node_manager+0x24c5/0x31d0 [ 36.143439] f2fs_fill_super+0x31fd/0x7050 [ 36.147657] ? snprintf+0xbb/0xf0 [ 36.151087] ? f2fs_commit_super+0x400/0x400 [ 36.155472] ? wait_for_completion_io+0x10/0x10 [ 36.160128] ? set_blocksize+0x163/0x3f0 [ 36.164176] mount_bdev+0x2fc/0x3b0 [ 36.167784] ? f2fs_commit_super+0x400/0x400 [ 36.172172] mount_fs+0xa3/0x310 [ 36.175521] vfs_kern_mount.part.0+0x68/0x470 [ 36.180020] do_mount+0x115c/0x2f50 [ 36.183822] ? cmp_ex_sort+0xc0/0xc0 [ 36.187526] ? __do_page_fault+0x180/0xd60 [ 36.191853] ? copy_mount_string+0x40/0x40 [ 36.196085] ? copy_mount_options+0x1cd/0x380 [ 36.200582] ? memset+0x20/0x40 [ 36.203867] ? copy_mount_options+0x26f/0x380 [ 36.208350] ksys_mount+0xcf/0x130 [ 36.211885] __x64_sys_mount+0xba/0x150 [ 36.215859] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.220430] do_syscall_64+0xf9/0x620 [ 36.224219] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.229413] RIP: 0033:0x7f29ab57effa [ 36.233110] Code: 48 c7 c2 c0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 a8 00 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 36.251997] RSP: 002b:00007fff702b4718 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 36.259708] RAX: ffffffffffffffda RBX: 00007fff702b4770 RCX: 00007f29ab57effa [ 36.266976] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fff702b4730 [ 36.274230] RBP: 00007fff702b4730 R08: 00007fff702b4770 R09: 0000000000000000 [ 36.281486] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000020000440 [ 36.288738] R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000018 [ 36.296002] Modules linked in: [ 36.303853] ---[ end trace 8a3ca3d69ca8b8f2 ]--- [ 36.308636] RIP: 0010:f2fs_get_meta_page_nofail+0x12d/0x150 [ 36.314389] Code: e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 75 23 83 8b 84 00 00 00 08 4c 89 e6 4c 89 ef e8 3b d2 03 05 48 89 ef e8 f3 a7 02 00 <0f> 0b e8 1c e4 82 fe eb 80 be 04 00 00 00 e8 00 e8 82 fe eb d1 66 [ 36.333427] RSP: 0018:ffff8880953d78d0 EFLAGS: 00010293 [ 36.338851] RAX: ffff888096f845c0 RBX: ffff8880b0c3aa00 RCX: ffffffff831805c1 [ 36.346166] RDX: 0000000000000000 RSI: ffffffff83157e3d RDI: 0000000000000005 [ 36.353429] RBP: ffff8880969a8300 R08: ffffffff8cd2f9a0 R09: 0000000000000001 [ 36.360815] R10: 0000000000000005 R11: 0000000000074071 R12: 0000000000000286 [ 36.368144] R13: ffff8880969a87f8 R14: 0000000000000000 R15: ffff8880969a8300 [ 36.375476] FS: 0000555557342300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 36.383848] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.389722] CR2: 00007fe30a3c5000 CR3: 00000000b00f2000 CR4: 00000000003406e0 [ 36.397032] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.404366] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.411652] Kernel panic - not syncing: Fatal exception [ 36.417247] Kernel Offset: disabled [ 36.420862] Rebooting in 86400 seconds..