[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.20' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 34.033450] EXT4-fs warning (device loop5): ext4_enable_quotas:5883: Failed to enable quota tracking (type=2, err=-22). Please run e2fsck to fix. [ 34.052655] EXT4-fs (loop5): mount failed executing program [ 34.112716] EXT4-fs (loop3): ext4_check_descriptors: Block bitmap for group 0 not in group (block 0)! [ 34.123067] ------------[ cut here ]------------ [ 34.127950] kernel BUG at fs/buffer.c:3049! [ 34.134670] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 34.140056] CPU: 0 PID: 8139 Comm: syz-executor267 Not tainted 4.19.211-syzkaller #0 [ 34.147965] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 34.157336] RIP: 0010:submit_bh_wbc+0x5e5/0x760 [ 34.162009] Code: 10 4c 8d 7b 20 48 89 44 24 08 e9 3e fc ff ff e8 41 98 b1 ff f0 80 63 01 f7 e9 4d fb ff ff e8 32 98 b1 ff 0f 0b e8 2b 98 b1 ff <0f> 0b e8 24 98 b1 ff 0f 0b e8 1d 98 b1 ff 0f 0b e8 16 98 b1 ff 0f [ 34.180910] RSP: 0018:ffff8880b0c5f900 EFLAGS: 00010293 [ 34.186387] RAX: ffff8880afd1e5c0 RBX: ffff88808b030690 RCX: ffffffff81b0e7d1 [ 34.193661] RDX: 0000000000000000 RSI: ffffffff81b0ed45 RDI: 0000000000000001 [ 34.200932] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.208203] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000003800 [ 34.215477] R13: 0000000000000000 R14: 0000000000000001 R15: 00000000b48213a3 [ 34.222845] FS: 00007f6c6b54d700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 34.231077] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.236955] CR2: 00007f6c6b613c38 CR3: 00000000a55a9000 CR4: 00000000003406f0 [ 34.244214] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.251472] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.258722] Call Trace: [ 34.261306] write_mmp_block+0x1e4/0x310 [ 34.265352] ? prandom_u32+0x171/0x1f0 [ 34.269224] ext4_multi_mount_protect+0x4a8/0xac0 [ 34.274053] ? __dump_mmp_msg+0xa0/0xa0 [ 34.278011] ? __lockdep_init_map+0x100/0x5a0 [ 34.282490] ? __lockdep_init_map+0x100/0x5a0 [ 34.286969] ext4_fill_super+0xa050/0xc850 [ 34.291195] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 34.296284] ? snprintf+0xbb/0xf0 [ 34.299724] ? wait_for_completion_io+0x10/0x10 [ 34.304382] ? set_blocksize+0x163/0x3f0 [ 34.308429] mount_bdev+0x2fc/0x3b0 [ 34.312052] ? ext4_calculate_overhead+0x11c0/0x11c0 [ 34.317143] mount_fs+0xa3/0x310 [ 34.320495] vfs_kern_mount.part.0+0x68/0x470 [ 34.324973] do_mount+0x115c/0x2f50 [ 34.328585] ? cmp_ex_sort+0xc0/0xc0 [ 34.332301] ? __do_page_fault+0x180/0xd60 [ 34.336522] ? copy_mount_string+0x40/0x40 [ 34.340745] ? copy_mount_options+0x1cd/0x380 [ 34.345224] ? memset+0x20/0x40 [ 34.348488] ? copy_mount_options+0x26f/0x380 [ 34.353055] ksys_mount+0xcf/0x130 [ 34.356580] __x64_sys_mount+0xba/0x150 [ 34.360540] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.365105] do_syscall_64+0xf9/0x620 [ 34.368897] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.374069] RIP: 0033:0x7f6c6b5c3f8a [ 34.377766] Code: 48 c7 c2 b8 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 b8 ff ff ff f7 d8 64 89 01 48 [ 34.396649] RSP: 002b:00007f6c6b54d108 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 34.404339] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f6c6b5c3f8a [ 34.411592] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f6c6b54d170 [ 34.418857] RBP: 0000000000000006 R08: 00007f6c6b54d1b0 R09: 0000000000000000 [ 34.426125] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000029 [ 34.433393] R13: 0000000020000000 R14: 0000000020000100 R15: 00007f6c6b54d170 [ 34.440644] Modules linked in: [ 34.445201] ---[ end trace 8941e2c8cf1bc0a0 ]--- [ 34.449987] RIP: 0010:submit_bh_wbc+0x5e5/0x760 [ 34.454487] EXT4-fs (loop3): group descriptors corrupted! [ 34.456620] Code: 10 4c 8d 7b 20 48 89 44 24 08 e9 3e fc ff ff e8 41 98 b1 ff f0 80 63 01 f7 e9 4d fb ff ff e8 32 98 b1 ff 0f 0b e8 2b 98 b1 ff <0f> 0b e8 24 98 b1 ff 0f 0b e8 1d 98 b1 ff 0f 0b e8 16 98 b1 ff 0f [ 34.482362] EXT4-fs warning (device loop1): ext4_enable_quotas:5883: Failed to enable quota tracking (type=2, err=-22). Please run e2fsck to fix. [ 34.484503] EXT4-fs warning (device loop2): ext4_enable_quotas:5883: Failed to enable quota tracking (type=2, err=-22). Please run e2fsck to fix. [ 34.510382] EXT4-fs (loop1): mount failed [ 34.510872] RSP: 0018:ffff8880b0c5f900 EFLAGS: 00010293 [ 34.520225] RAX: ffff8880afd1e5c0 RBX: ffff88808b030690 RCX: ffffffff81b0e7d1 [ 34.520807] EXT4-fs (loop2): mount failed [ 34.527796] RDX: 0000000000000000 RSI: ffffffff81b0ed45 RDI: 0000000000000001 [ 34.539172] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.546641] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000003800 [ 34.554246] R13: 0000000000000000 R14: 0000000000000001 R15: 00000000b48213a3 [ 34.564705] FS: 00007f6c6b54d700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 34.575325] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.581838] CR2: 00007f6c6b54cff8 CR3: 00000000a55a9000 CR4: 00000000003406e0 [ 34.589383] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.597287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.605265] Kernel panic - not syncing: Fatal exception [ 34.610826] Kernel Offset: disabled [ 34.614436] Rebooting in 86400 seconds..