attempt to access beyond end of device
loop4: rw=2049, want=40984, limit=40427
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2780!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 301 Comm: kworker/u4:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_writepages+0x2edb/0x2f00 fs/ext4/inode.c:2779
Code: ff 49 bd 00 00 00 00 00 fc ff df 4c 8b a4 24 98 00 00 00 48 8b 5c 24 38 4c 8b b4 24 c0 00 00 00 e9 fe f7 ff ff e8 75 d7 92 ff <0f> 0b e8 6e d7 92 ff e8 b5 8f 2e ff eb 92 e8 62 d7 92 ff e8 a9 8f
RSP: 0018:ffffc90007997180 EFLAGS: 00010293
RAX: ffffffff81d1dddb RBX: 0000008410000000 RCX: ffff888126e9d000
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900079974f0 R08: ffff8881107fa9af R09: 1ffff110220ff535
R10: dffffc0000000000 R11: ffffed10220ff536 R12: ffff8881284cd000
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff8881107fa9a8
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562aba133708 CR3: 000000012448a000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0x12e/0x280 mm/page-writeback.c:2380
 __writeback_single_inode+0xd9/0xa30 fs/fs-writeback.c:1486
 writeback_sb_inodes+0x96d/0x1680 fs/fs-writeback.c:1749
 wb_writeback+0x40f/0xb80 fs/fs-writeback.c:1924
 wb_do_writeback fs/fs-writeback.c:2069 [inline]
 wb_workfn+0x3ac/0xf30 fs/fs-writeback.c:2110
 process_one_work+0x6fd/0xbc0 kernel/workqueue.c:2301
 worker_thread+0xa8e/0x13c0 kernel/workqueue.c:2447
 kthread+0x324/0x3b0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Modules linked in:
---[ end trace 31c3d982aa762b5a ]---
RIP: 0010:ext4_writepages+0x2edb/0x2f00 fs/ext4/inode.c:2779
Code: ff 49 bd 00 00 00 00 00 fc ff df 4c 8b a4 24 98 00 00 00 48 8b 5c 24 38 4c 8b b4 24 c0 00 00 00 e9 fe f7 ff ff e8 75 d7 92 ff <0f> 0b e8 6e d7 92 ff e8 b5 8f 2e ff eb 92 e8 62 d7 92 ff e8 a9 8f
RSP: 0018:ffffc90007997180 EFLAGS: 00010293
RAX: ffffffff81d1dddb RBX: 0000008410000000 RCX: ffff888126e9d000
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900079974f0 R08: ffff8881107fa9af R09: 1ffff110220ff535
R10: dffffc0000000000 R11: ffffed10220ff536 R12: ffff8881284cd000
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff8881107fa9a8
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f82f9b352c0 CR3: 0000000125fd6000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400