------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2844! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.4.219-syzkaller-00096-gd7e5d5321233 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:4) RIP: 0010:ext4_writepages+0x3a2b/0x3a50 fs/ext4/inode.c:2843 Code: 94 c3 40 0f 94 c6 31 ff e8 12 9d a0 ff 84 db 75 2e e8 79 9a a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 65 9a a0 ff <0f> 0b e8 5e 9a a0 ff 0f 0b e8 57 9a a0 ff e8 d2 96 3b ff eb a3 e8 RSP: 0000:ffff8881f5db7140 EFLAGS: 00010293 RAX: ffffffff81c4b0bb RBX: 0000010000000000 RCX: ffff8881f5d58fc0 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881f5db7510 R08: ffffffff81c47f87 R09: ffffed1033061a97 R10: ffffed1033061a97 R11: 1ffff11033061a96 R12: ffff88819830d560 R13: ffff8881f5db7870 R14: 0000010410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb912a35ff8 CR3: 00000001de4de000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x13a/0x280 mm/page-writeback.c:2344 __writeback_single_inode+0xc5/0x840 fs/fs-writeback.c:1467 writeback_sb_inodes+0xa04/0x1890 fs/fs-writeback.c:1730 wb_writeback+0x429/0xcb0 fs/fs-writeback.c:1905 wb_do_writeback+0x1f2/0xbd0 fs/fs-writeback.c:2050 wb_workfn+0xf8/0x450 fs/fs-writeback.c:2091 process_one_work+0x6ca/0xc40 kernel/workqueue.c:2287 worker_thread+0xae0/0x1440 kernel/workqueue.c:2433 kthread+0x2d8/0x360 kernel/kthread.c:288 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354 Modules linked in: ---[ end trace 36c732aa3043d2fd ]--- RIP: 0010:ext4_writepages+0x3a2b/0x3a50 fs/ext4/inode.c:2843 Code: 94 c3 40 0f 94 c6 31 ff e8 12 9d a0 ff 84 db 75 2e e8 79 9a a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 65 9a a0 ff <0f> 0b e8 5e 9a a0 ff 0f 0b e8 57 9a a0 ff e8 d2 96 3b ff eb a3 e8 RSP: 0000:ffff8881f5db7140 EFLAGS: 00010293 RAX: ffffffff81c4b0bb RBX: 0000010000000000 RCX: ffff8881f5d58fc0 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881f5db7510 R08: ffffffff81c47f87 R09: ffffed1033061a97 R10: ffffed1033061a97 R11: 1ffff11033061a96 R12: ffff88819830d560 R13: ffff8881f5db7870 R14: 0000010410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb913dfe998 CR3: 00000001de4de000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400