------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2563! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 63 Comm: kworker/u32:3 Not tainted 6.9.0-syzkaller-12124-g6d69b6c12fce #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: writeback wb_workfn (flush-7:3) RIP: 0010:ext4_do_writepages+0x2572/0x3250 fs/ext4/inode.c:2563 Code: 48 c1 ea 03 80 3c 02 00 0f 85 44 0c 00 00 48 c7 44 24 28 4c d9 03 00 48 8b 44 24 08 48 8b 18 e9 c3 dc ff ff e8 cf d6 46 ff 90 <0f> 0b e8 c7 d6 46 ff 48 8b 4c 24 70 41 89 dc 48 b8 00 00 00 00 00 RSP: 0018:ffffc90000d072a8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88803c8be450 RCX: ffffffff8246f86a RDX: ffff888018ee2440 RSI: ffffffff82470cb1 RDI: 0000000000000007 RBP: ffffc90000d074b8 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000001 R13: ffff88802ab02638 R14: 0000000000000001 R15: 0000000004208160 FS: 0000000000000000(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f971e57abf8 CR3: 00000000263b2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_writepages+0x303/0x730 fs/ext4/inode.c:2768 do_writepages+0x1a3/0x7f0 mm/page-writeback.c:2634 __writeback_single_inode+0x163/0xf90 fs/fs-writeback.c:1651 writeback_sb_inodes+0x611/0x1150 fs/fs-writeback.c:1947 wb_writeback+0x199/0xb50 fs/fs-writeback.c:2127 wb_do_writeback fs/fs-writeback.c:2274 [inline] wb_workfn+0x28d/0xf40 fs/fs-writeback.c:2314 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_do_writepages+0x2572/0x3250 fs/ext4/inode.c:2563 Code: 48 c1 ea 03 80 3c 02 00 0f 85 44 0c 00 00 48 c7 44 24 28 4c d9 03 00 48 8b 44 24 08 48 8b 18 e9 c3 dc ff ff e8 cf d6 46 ff 90 <0f> 0b e8 c7 d6 46 ff 48 8b 4c 24 70 41 89 dc 48 b8 00 00 00 00 00 RSP: 0018:ffffc90000d072a8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88803c8be450 RCX: ffffffff8246f86a RDX: ffff888018ee2440 RSI: ffffffff82470cb1 RDI: 0000000000000007 RBP: ffffc90000d074b8 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000001 R13: ffff88802ab02638 R14: 0000000000000001 R15: 0000000004208160 FS: 0000000000000000(0000) GS:ffff88806b300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f97152ff000 CR3: 000000000d97a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400