------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2816!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 1108 Comm: kworker/u9:5 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
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-7:2)
RIP: 0010:ext4_do_writepages+0x4768/0x4770
Code: c6 e0 fd 25 8c e8 f8 26 98 fe 90 0f 0b e8 00 b3 37 ff 4c 89 f7 48 c7 c6 c0 02 26 8c e8 e1 26 98 fe 90 0f 0b e8 e9 b2 37 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90006b86ce0 EFLAGS: 00010293
RAX: ffffffff828ffb67 RBX: 0000004210000000 RCX: ffff888108e21e00
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90006b870f0 R08: ffff88811497d1e7 R09: 1ffff1102292fa3c
R10: dffffc0000000000 R11: ffffed102292fa3d R12: ffff8881078a41b8
R13: dffffc0000000000 R14: 0000004000000000 R15: ffff88811497d3d0
FS:  0000000000000000(0000) GS:ffff88818d6e6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555590280a28 CR3: 000000010d13e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ext4_writepages+0x241/0x3b0
 do_writepages+0x338/0x560
 __writeback_single_inode+0x136/0x1220
 writeback_sb_inodes+0x9de/0x1b00
 wb_writeback+0x41c/0xad0
 wb_workfn+0x431/0x10f0
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x4768/0x4770
Code: c6 e0 fd 25 8c e8 f8 26 98 fe 90 0f 0b e8 00 b3 37 ff 4c 89 f7 48 c7 c6 c0 02 26 8c e8 e1 26 98 fe 90 0f 0b e8 e9 b2 37 ff 90 <0f> 0b 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90006b86ce0 EFLAGS: 00010293
RAX: ffffffff828ffb67 RBX: 0000004210000000 RCX: ffff888108e21e00
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc90006b870f0 R08: ffff88811497d1e7 R09: 1ffff1102292fa3c
R10: dffffc0000000000 R11: ffffed102292fa3d R12: ffff8881078a41b8
R13: dffffc0000000000 R14: 0000004000000000 R15: ffff88811497d3d0
FS:  0000000000000000(0000) GS:ffff8882a8ce6000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e415ff8 CR3: 000000000eb48000 CR4: 00000000000006f0
