EXT4-fs error (device loop0): __ext4_get_inode_loc:4351: comm kworker/u4:3: Invalid inode table block 0 in block_group 0 ------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2432! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 313 Comm: kworker/u4:3 Not tainted 5.15.167-syzkaller-1075712-g5e4635681cf1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2432 [inline] RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2473 [inline] RIP: 0010:ext4_writepages+0x3f4b/0x4000 fs/ext4/inode.c:2841 Code: 00 74 08 48 89 df e8 f4 be c9 ff 48 8b 3b 48 8b 74 24 48 48 8b 54 24 28 44 89 e9 45 89 f8 e8 5c 40 08 00 eb 58 e8 f5 6c 87 ff <0f> 0b e8 ee 6c 87 ff eb 3b e8 e7 6c 87 ff eb 72 e8 e0 6c 87 ff 31 RSP: 0018:ffffc90000b57000 EFLAGS: 00010293 RAX: ffffffff81e8ea8b RBX: dffffc0000000000 RCX: ffff88811ec8e2c0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000b57410 R08: ffffffff81e8c44b R09: ffffed102356b310 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffffc90000b572e0 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000e000 CR3: 000000010bf2c000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x40e/0x670 mm/page-writeback.c:2388 __writeback_single_inode+0xdf/0xa70 fs/fs-writeback.c:1647 writeback_sb_inodes+0xb2a/0x1920 fs/fs-writeback.c:1930 wb_writeback+0x3b9/0x9e0 fs/fs-writeback.c:2104 wb_do_writeback fs/fs-writeback.c:2247 [inline] wb_workfn+0x3d9/0x1110 fs/fs-writeback.c:2288 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472 kthread+0x421/0x510 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Modules linked in: ---[ end trace 708b7e4d4dc11928 ]--- RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2432 [inline] RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2473 [inline] RIP: 0010:ext4_writepages+0x3f4b/0x4000 fs/ext4/inode.c:2841 Code: 00 74 08 48 89 df e8 f4 be c9 ff 48 8b 3b 48 8b 74 24 48 48 8b 54 24 28 44 89 e9 45 89 f8 e8 5c 40 08 00 eb 58 e8 f5 6c 87 ff <0f> 0b e8 ee 6c 87 ff eb 3b e8 e7 6c 87 ff eb 72 e8 e0 6c 87 ff 31 RSP: 0018:ffffc90000b57000 EFLAGS: 00010293 RAX: ffffffff81e8ea8b RBX: dffffc0000000000 RCX: ffff88811ec8e2c0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000b57410 R08: ffffffff81e8c44b R09: ffffed102356b310 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffffc90000b572e0 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000e000 CR3: 000000010bf2c000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400