------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2734!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4447 Comm: kworker/u4:14 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:5)
RIP: 0010:ext4_writepages+0x2d12/0x2d20 fs/ext4/inode.c:2733
Code: c1 03 38 c1 0f 8c b0 fd ff ff 4c 89 e7 e8 e6 d3 b2 ff e9 a3 fd ff ff e8 ec 5a 6d ff 0f 0b e8 e5 5a 6d ff 0f 0b e8 de 5a 6d ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48 89 fb
RSP: 0018:ffffc9000391f080 EFLAGS: 00010293
RAX: ffffffff820a6832 RBX: 000000c410000000 RCX: ffff88807de13b80
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000391f3d0 R08: dffffc0000000000 R09: ffffed100b629c81
R10: ffffed100b629c81 R11: 1ffff1100b629c80 R12: 1ffff92000723ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88802282e000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3121fffc CR3: 00000000792a8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386
 __writeback_single_inode+0x153/0xda0 fs/fs-writeback.c:1647
 writeback_sb_inodes+0x9fe/0x1610 fs/fs-writeback.c:1930
 wb_writeback+0x443/0xb90 fs/fs-writeback.c:2104
 wb_do_writeback fs/fs-writeback.c:2247 [inline]
 wb_workfn+0x423/0xe60 fs/fs-writeback.c:2288
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace 63140571fd813906 ]---
RIP: 0010:ext4_writepages+0x2d12/0x2d20 fs/ext4/inode.c:2733
Code: c1 03 38 c1 0f 8c b0 fd ff ff 4c 89 e7 e8 e6 d3 b2 ff e9 a3 fd ff ff e8 ec 5a 6d ff 0f 0b e8 e5 5a 6d ff 0f 0b e8 de 5a 6d ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 41 56 53 48 89 fb
RSP: 0018:ffffc9000391f080 EFLAGS: 00010293
RAX: ffffffff820a6832 RBX: 000000c410000000 RCX: ffff88807de13b80
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc9000391f3d0 R08: dffffc0000000000 R09: ffffed100b629c81
R10: ffffed100b629c81 R11: 1ffff1100b629c80 R12: 1ffff92000723ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88802282e000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056127b352950 CR3: 000000001f09f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400