------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2749!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 2617 Comm: kworker/u4:6 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: writeback wb_workfn (flush-7:8)
RIP: 0010:ext4_writepages+0x3080/0x30a0 fs/ext4/inode.c:2748
Code: dc 8d ff 84 db 75 31 e8 3e da 8d ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 64 24 20 48 8b 5c 24 40 e9 99 f7 ff ff e8 20 da 8d ff <0f> 0b e8 19 da 8d ff e8 c0 9c 24 ff eb 98 e8 0d da 8d ff e8 b4 9c
RSP: 0018:ffffc90000c6f120 EFLAGS: 00010293
RAX: ffffffff81dbdc80 RBX: 000000c410000000 RCX: ffff88813f434f00
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90000c6f490 R08: ffff88812bd1e987 R09: 1ffff110257a3d30
R10: dffffc0000000000 R11: ffffed10257a3d31 R12: ffff888116690000
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88812bd1e980
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe05d06b580 CR3: 0000000127fe0000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000003
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x476/0x6d0 mm/page-writeback.c:2388
 __writeback_single_inode+0xd9/0x9e0 fs/fs-writeback.c:1657
 writeback_sb_inodes+0x9f3/0x1610 fs/fs-writeback.c:1940
 wb_writeback+0x3eb/0x990 fs/fs-writeback.c:2116
 wb_do_writeback fs/fs-writeback.c:2263 [inline]
 wb_workfn+0x3ac/0xf30 fs/fs-writeback.c:2304
 process_one_work+0x6c8/0xbb0 kernel/workqueue.c:2328
 worker_thread+0xaa0/0x1250 kernel/workqueue.c:2475
 kthread+0x3f5/0x4f0 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace 96d06a02bdc325be ]---
RIP: 0010:ext4_writepages+0x3080/0x30a0 fs/ext4/inode.c:2748
Code: dc 8d ff 84 db 75 31 e8 3e da 8d ff 49 bd 00 00 00 00 00 fc ff df 4c 8b 64 24 20 48 8b 5c 24 40 e9 99 f7 ff ff e8 20 da 8d ff <0f> 0b e8 19 da 8d ff e8 c0 9c 24 ff eb 98 e8 0d da 8d ff e8 b4 9c
RSP: 0018:ffffc90000c6f120 EFLAGS: 00010293
RAX: ffffffff81dbdc80 RBX: 000000c410000000 RCX: ffff88813f434f00
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90000c6f490 R08: ffff88812bd1e987 R09: 1ffff110257a3d30
R10: dffffc0000000000 R11: ffffed10257a3d31 R12: ffff888116690000
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88812bd1e980
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f78535dd2f8 CR3: 0000000141825000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000003
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400