------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2745! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.15.120-syzkaller-00229-g748fd0d9ca0f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Workqueue: writeback wb_workfn (flush-7:4) RIP: 0010:ext4_writepages+0x3fe6/0x4000 fs/ext4/inode.c:2744 Code: 89 de e8 7d 64 88 ff 45 84 f6 75 2c e8 e3 61 88 ff 49 be 00 00 00 00 00 fc ff df 4c 8b 64 24 50 e9 e4 c5 ff ff e8 ca 61 88 ff <0f> 0b e8 c3 61 88 ff e8 7a 01 19 ff eb 9b e8 b7 61 88 ff e8 6e 01 RSP: 0018:ffffc90000087000 EFLAGS: 00010293 RAX: ffffffff81e77ff6 RBX: 0000008000000000 RCX: ffff8881002593c0 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc90000087410 R08: ffffffff81e77766 R09: ffffed102cededec R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000877d0 R13: 0000000000000000 R14: 000000c410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f825b5e8000 CR3: 000000015a1b9000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x40e/0x670 mm/page-writeback.c:2366 __writeback_single_inode+0xdf/0xa70 fs/fs-writeback.c:1625 writeback_sb_inodes+0xb2e/0x1910 fs/fs-writeback.c:1908 wb_writeback+0x3b9/0x9e0 fs/fs-writeback.c:2082 wb_do_writeback fs/fs-writeback.c:2225 [inline] wb_workfn+0x3d9/0x1110 fs/fs-writeback.c:2266 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2314 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2461 kthread+0x421/0x510 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Modules linked in: ---[ end trace 8a88877744dfe2cf ]--- RIP: 0010:ext4_writepages+0x3fe6/0x4000 fs/ext4/inode.c:2744 Code: 89 de e8 7d 64 88 ff 45 84 f6 75 2c e8 e3 61 88 ff 49 be 00 00 00 00 00 fc ff df 4c 8b 64 24 50 e9 e4 c5 ff ff e8 ca 61 88 ff <0f> 0b e8 c3 61 88 ff e8 7a 01 19 ff eb 9b e8 b7 61 88 ff e8 6e 01 RSP: 0018:ffffc90000087000 EFLAGS: 00010293 RAX: ffffffff81e77ff6 RBX: 0000008000000000 RCX: ffff8881002593c0 RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000 RBP: ffffc90000087410 R08: ffffffff81e77766 R09: ffffed102cededec R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900000877d0 R13: 0000000000000000 R14: 000000c410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002023c030 CR3: 0000000129565000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400