[ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.74' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 27.601852] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0) [ 27.609133] F2FS-fs (loop0): Can't find valid F2FS filesystem in 2th superblock [ 27.617501] F2FS-fs (loop0): invalid crc value [ 27.651695] F2FS-fs (loop0): access invalid blkaddr:1 [ 27.657026] ------------[ cut here ]------------ [ 27.661775] WARNING: CPU: 1 PID: 7972 at fs/f2fs/checkpoint.c:150 f2fs_is_valid_blkaddr+0x2d9/0x920 [ 27.670934] Kernel panic - not syncing: panic_on_warn set ... [ 27.670934] [ 27.678281] CPU: 1 PID: 7972 Comm: syz-executor175 Not tainted 4.14.291-syzkaller #0 [ 27.686142] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 27.695466] Call Trace: [ 27.698031] dump_stack+0x1b2/0x281 [ 27.701633] panic+0x1f9/0x42d [ 27.704799] ? add_taint.cold+0x16/0x16 [ 27.708751] ? f2fs_is_valid_blkaddr+0x2d9/0x920 [ 27.713481] ? f2fs_is_valid_blkaddr+0x2d9/0x920 [ 27.718211] __warn.cold+0x20/0x44 [ 27.721725] ? ist_end_non_atomic+0x10/0x10 [ 27.726905] ? f2fs_is_valid_blkaddr+0x2d9/0x920 [ 27.731656] report_bug+0x208/0x250 [ 27.735260] do_error_trap+0x195/0x2d0 [ 27.739125] ? math_error+0x2d0/0x2d0 [ 27.742902] ? log_store.cold+0x16/0x16 [ 27.746858] ? trace_hardirqs_on_caller+0x3a8/0x580 [ 27.751858] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 27.756943] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.761779] invalid_op+0x1b/0x40 [ 27.765230] RIP: 0010:f2fs_is_valid_blkaddr+0x2d9/0x920 [ 27.771173] RSP: 0018:ffff88808fd4f820 EFLAGS: 00010286 [ 27.776509] RAX: dffffc0000000000 RBX: ffff8880b3b88640 RCX: 0000000000000000 [ 27.783754] RDX: 0000000000000000 RSI: ffffffff878bc8e0 RDI: ffffed1011fa9ede [ 27.791012] RBP: 0000000000000005 R08: 0000000000000029 R09: 0000000000000000 [ 27.798266] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 27.805627] R13: 0000000000000001 R14: 0000000000001400 R15: 0000000000000400 [ 27.813076] f2fs_submit_page_bio+0x10a/0x1380 [ 27.817634] read_node_page+0x209/0x2f0 [ 27.821586] ? truncate_node+0xc80/0xc80 [ 27.825629] __get_node_page.part.0+0x97/0xea0 [ 27.830200] get_node_page+0xdd/0x170 [ 27.833996] f2fs_iget+0x1e8/0x3760 [ 27.837616] ? kmem_cache_alloc_trace+0x36c/0x3d0 [ 27.842450] f2fs_fill_super+0x30ac/0x56a0 [ 27.846683] ? snprintf+0xa5/0xd0 [ 27.850110] ? f2fs_commit_super+0x3a0/0x3a0 [ 27.854494] ? ns_test_super+0x50/0x50 [ 27.858357] ? set_blocksize+0x125/0x380 [ 27.862393] mount_bdev+0x2b3/0x360 [ 27.866004] ? f2fs_commit_super+0x3a0/0x3a0 [ 27.870486] mount_fs+0x92/0x2a0 [ 27.873830] vfs_kern_mount.part.0+0x5b/0x470 [ 27.878300] do_mount+0xe65/0x2a30 [ 27.881816] ? retint_kernel+0x2d/0x2d [ 27.885678] ? copy_mount_string+0x40/0x40 [ 27.889890] ? memset+0x20/0x40 [ 27.893147] ? copy_mount_options+0x1fa/0x2f0 [ 27.897630] ? copy_mnt_ns+0xa30/0xa30 [ 27.901505] SyS_mount+0xa8/0x120 [ 27.904932] ? copy_mnt_ns+0xa30/0xa30 [ 27.908805] do_syscall_64+0x1d5/0x640 [ 27.912673] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.917846] RIP: 0033:0x7fbb2b3f6a7a [ 27.921530] RSP: 002b:00007ffceacc49c8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 27.929300] RAX: ffffffffffffffda RBX: 00007ffceacc4a20 RCX: 00007fbb2b3f6a7a [ 27.936544] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffceacc49e0 [ 27.943800] RBP: 00007ffceacc49e0 R08: 00007ffceacc4a20 R09: 0000000000000000 [ 27.951055] R10: 0000000000000000 R11: 0000000000000286 R12: 00000000200006b0 [ 27.958308] R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000032 [ 27.965778] Kernel Offset: disabled [ 27.969422] Rebooting in 86400 seconds..