Warning: Permanently added '10.128.1.98' (ECDSA) to the list of known hosts. executing program [ 28.363451] EXT4-fs (loop0): ext4_check_descriptors: Checksum for group 0 failed (14603!=0) [ 28.383535] EXT4-fs (loop0): orphan cleanup on readonly fs [ 28.389951] EXT4-fs error (device loop0): ext4_free_blocks:4893: comm syz-executor105: Freeing blocks in system zone - Block = 16, count = 16 [ 28.404030] EXT4-fs (loop0): Remounting filesystem read-only [ 28.409898] ------------[ cut here ]------------ [ 28.414997] kernel BUG at fs/ext4/ext4.h:2849! [ 28.419865] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 28.425236] Modules linked in: [ 28.428413] CPU: 1 PID: 7979 Comm: syz-executor105 Not tainted 4.14.286-syzkaller #0 [ 28.436369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 28.445935] task: ffff88809d9661c0 task.stack: ffff88809eb08000 [ 28.451975] RIP: 0010:ext4_free_blocks+0x1b26/0x2340 [ 28.457052] RSP: 0018:ffff88809eb0f3d0 EFLAGS: 00010297 [ 28.462407] RAX: ffff88809d9661c0 RBX: 00000000ffffffff RCX: 0000000000000004 [ 28.469670] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b312cb40 [ 28.477172] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000004 [ 28.484504] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 [ 28.491749] R13: ffff8880b312cb00 R14: dffffc0000000000 R15: ffff88809597e400 [ 28.499006] FS: 0000555555c03300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.507220] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.513077] CR2: 0000558a02f91160 CR3: 00000000b2e57000 CR4: 00000000003406e0 [ 28.520421] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.527675] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.534922] Call Trace: [ 28.537493] ? trace_hardirqs_on+0x10/0x10 [ 28.541704] ? ext4_mb_new_blocks+0x3db0/0x3db0 [ 28.546350] ? __es_remove_extent+0x3c6/0x600 [ 28.550819] ? ext4_inode_block_valid+0x27f/0x3b0 [ 28.555637] ext4_clear_blocks+0x2b0/0x780 [ 28.559860] ? lock_downgrade+0x740/0x740 [ 28.563985] ext4_free_data+0x12d/0x340 [ 28.567941] ext4_ind_truncate+0x5d3/0x860 [ 28.572154] ? ext4_discard_preallocations+0x35a/0xdf0 [ 28.577411] ? ext4_ind_trans_blocks+0x70/0x70 [ 28.581969] ? ext4_exit_mballoc+0xb0/0xb0 [ 28.586181] ? lock_acquire+0x170/0x3f0 [ 28.590132] ? ext4_truncate+0x62c/0x1190 [ 28.594262] ext4_truncate+0x673/0x1190 [ 28.598211] ? ext4_punch_hole+0x10d0/0x10d0 [ 28.602596] ? __ext4_journal_start_sb+0x105/0x3b0 [ 28.607508] ? ext4_evict_inode+0x710/0x1530 [ 28.611892] ext4_evict_inode+0x854/0x1530 [ 28.616101] ? ext4_journalled_write_end+0x1140/0x1140 [ 28.621351] ? ext4_journalled_write_end+0x1140/0x1140 [ 28.626620] evict+0x2c8/0x700 [ 28.629818] iput+0x458/0x7e0 [ 28.632904] ? ext4_mark_dquot_dirty+0x190/0x190 [ 28.637632] ext4_enable_quotas+0x46a/0x6a0 [ 28.641932] ? ext4_clear_journal_err+0x2a0/0x2a0 [ 28.646748] ? ext4_decode_error+0x160/0x160 [ 28.651148] ? vsnprintf+0xc20/0x1340 [ 28.654921] ? ext4_register_sysfs+0x1fe/0x2b0 [ 28.659477] ext4_fill_super+0x7cb4/0xb3c0 [ 28.663693] ? ext4_calculate_overhead+0x10b0/0x10b0 [ 28.668779] ? lock_downgrade+0x740/0x740 [ 28.672900] ? snprintf+0xa5/0xd0 [ 28.676357] ? vsprintf+0x30/0x30 [ 28.679786] ? ns_test_super+0x50/0x50 [ 28.683658] ? set_blocksize+0x125/0x380 [ 28.687704] mount_bdev+0x2b3/0x360 [ 28.691305] ? ext4_calculate_overhead+0x10b0/0x10b0 [ 28.696387] mount_fs+0x92/0x2a0 [ 28.699728] vfs_kern_mount.part.0+0x5b/0x470 [ 28.704210] do_mount+0xe65/0x2a30 [ 28.707723] ? retint_kernel+0x2d/0x2d [ 28.711588] ? copy_mount_string+0x40/0x40 [ 28.715809] ? memset+0x20/0x40 [ 28.719065] ? copy_mount_options+0x1fa/0x2f0 [ 28.723535] ? copy_mnt_ns+0xa30/0xa30 [ 28.727409] SyS_mount+0xa8/0x120 [ 28.730837] ? copy_mnt_ns+0xa30/0xa30 [ 28.734699] do_syscall_64+0x1d5/0x640 [ 28.738564] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.743728] RIP: 0033:0x7fa540f474fa [ 28.747418] RSP: 002b:00007ffdb6dd2338 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 28.755594] RAX: ffffffffffffffda RBX: 00007ffdb6dd2390 RCX: 00007fa540f474fa [ 28.762846] RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007ffdb6dd2350 [ 28.770100] RBP: 00007ffdb6dd2350 R08: 00007ffdb6dd2390 R09: 0000000800000015 [ 28.777354] R10: 0000000000000081 R11: 0000000000000206 R12: 0000000000000004 [ 28.784602] R13: 0000000000000003 R14: 0000000000000003 R15: 0000000000000010 [ 28.791866] Code: 96 ff 48 c7 c2 60 4f 98 87 be 76 13 00 00 48 c7 c7 80 4d 98 87 c6 05 86 5a 34 08 01 e8 62 0e 43 05 e9 9a f7 ff ff e8 4a 78 96 ff <0f> 0b e8 43 78 96 ff 83 fb a1 8b ac 24 d0 00 00 00 0f 84 95 f8 [ 28.810947] RIP: ext4_free_blocks+0x1b26/0x2340 RSP: ffff88809eb0f3d0 [ 28.817819] ---[ end trace e5b3e09c17d1932f ]--- [ 28.822868] Kernel panic - not syncing: Fatal exception [ 28.828378] Kernel Offset: disabled [ 28.831987] Rebooting in 86400 seconds..