[ 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 '10.128.10.54' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 34.368745] F2FS-fs (loop0): invalid crc value [ 34.378095] F2FS-fs (loop0): Found nat_bits in checkpoint [ 34.411573] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4 [ 34.432913] F2FS-fs (loop0): access invalid blkaddr:1803188595 [ 34.439649] ------------[ cut here ]------------ [ 34.444789] WARNING: CPU: 0 PID: 8079 at fs/f2fs/checkpoint.c:166 f2fs_is_valid_blkaddr+0x35d/0xa20 [ 34.453967] Kernel panic - not syncing: panic_on_warn set ... [ 34.453967] [ 34.461316] CPU: 0 PID: 8079 Comm: syz-executor306 Not tainted 4.19.211-syzkaller #0 [ 34.469171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 34.478499] Call Trace: [ 34.481070] dump_stack+0x1fc/0x2ef [ 34.484677] panic+0x26a/0x50e [ 34.487881] ? __warn_printk+0xf3/0xf3 [ 34.491788] ? f2fs_is_valid_blkaddr+0x35d/0xa20 [ 34.496524] ? __probe_kernel_read+0x130/0x1b0 [ 34.501100] ? __warn.cold+0x5/0x5a [ 34.504704] ? __warn+0xe4/0x200 [ 34.508068] ? f2fs_is_valid_blkaddr+0x35d/0xa20 [ 34.512805] __warn.cold+0x20/0x5a [ 34.516332] ? io_schedule_timeout+0x140/0x140 [ 34.520898] ? f2fs_is_valid_blkaddr+0x35d/0xa20 [ 34.525631] report_bug+0x262/0x2b0 [ 34.529239] do_error_trap+0x1d7/0x310 [ 34.533107] ? math_error+0x310/0x310 [ 34.536889] ? __irq_work_queue_local+0x101/0x160 [ 34.541714] ? irq_work_queue+0x29/0x80 [ 34.545668] ? error_entry+0x72/0xd0 [ 34.549374] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.554375] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.559201] invalid_op+0x14/0x20 [ 34.562720] RIP: 0010:f2fs_is_valid_blkaddr+0x35d/0xa20 [ 34.568062] Code: 7a 06 00 00 48 8b 7d 00 44 89 e1 48 c7 c2 40 1a a8 88 48 c7 c6 e0 18 a8 88 e8 bf fa fd ff 48 c7 c7 80 1a a8 88 e8 fe 34 de 04 <0f> 0b 45 31 ed e9 3f fe ff ff e8 84 03 4d fe 48 8d bd 40 01 00 00 [ 34.586952] RSP: 0018:ffff888096937a38 EFLAGS: 00010286 [ 34.592296] RAX: 0000000000000024 RBX: 0000000000000005 RCX: 0000000000000000 [ 34.599543] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1012d26f39 [ 34.606796] RBP: ffff8880b1570140 R08: 0000000000000024 R09: 0000000000000000 [ 34.614050] R10: 0000000000000005 R11: 0000000000000000 R12: 000000006b7a7973 [ 34.621301] R13: ffff8880a4b1c780 R14: 0000000000004000 R15: 0000000000000200 [ 34.628559] ? vprintk_func+0x81/0x180 [ 34.632428] ? f2fs_is_valid_blkaddr+0x35d/0xa20 [ 34.637161] f2fs_truncate_data_blocks_range+0x2e4/0xf30 [ 34.642591] f2fs_truncate_blocks+0xf5a/0x1610 [ 34.647153] ? f2fs_truncate_data_blocks+0x20/0x20 [ 34.652066] f2fs_truncate+0x3e7/0x870 [ 34.655952] f2fs_setattr+0xf74/0x12b0 [ 34.659827] ? f2fs_truncate+0x870/0x870 [ 34.663867] notify_change+0x70b/0xfc0 [ 34.667734] do_truncate+0x134/0x1f0 [ 34.671528] ? dentry_open+0x1d0/0x1d0 [ 34.675405] ? apparmor_path_truncate+0x183/0x200 [ 34.680237] ? inode_permission.part.0+0x10c/0x450 [ 34.685152] vfs_truncate+0x54b/0x6d0 [ 34.688958] ? do_truncate+0x1f0/0x1f0 [ 34.692828] ? getname_flags+0x25b/0x590 [ 34.696889] do_sys_truncate+0x145/0x170 [ 34.700937] ? vfs_truncate+0x6d0/0x6d0 [ 34.704906] ? trace_hardirqs_off_caller+0x6e/0x210 [ 34.709902] ? do_syscall_64+0x21/0x620 [ 34.713860] do_syscall_64+0xf9/0x620 [ 34.717651] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.722825] RIP: 0033:0x7eff6b56f779 [ 34.726527] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 34.745410] RSP: 002b:00007ffdc77cf388 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 34.753097] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007eff6b56f779 [ 34.760429] RDX: 00007eff6b52ddf3 RSI: 0000000000000000 RDI: 0000000020000100 [ 34.767676] RBP: 00007eff6b52f010 R08: 00000000000105c3 R09: 0000000000000000 [ 34.774924] R10: 00007ffdc77cf250 R11: 0000000000000246 R12: 00007eff6b52f0a0 [ 34.782314] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.789853] Kernel Offset: disabled [ 34.793510] Rebooting in 86400 seconds..