------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2760!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1102 Comm: kworker/u4:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: writeback wb_workfn (flush-7:4)
RIP: 0010:ext4_writepages+0x2f34/0x2f40 fs/ext4/inode.c:2759
Code: c1 03 38 c1 0f 8c ac fd ff ff 4c 89 e7 e8 a4 95 ac ff e9 9f fd ff ff e8 ba aa 5b ff 0f 0b e8 b3 aa 5b ff 0f 0b e8 ac aa 5b ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 54 53 48 89
RSP: 0018:ffffc90004c3f040 EFLAGS: 00010293
RAX: ffffffff8226a7c4 RBX: 0000008410000000 RCX: ffff888026351dc0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90004c3f3b0 R08: ffff888059190a5f R09: 1ffff1100b23214b
R10: dffffc0000000000 R11: ffffed100b23214c R12: 1ffff92000987ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88807397e000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8a69bfa980 CR3: 000000005c6a7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3ba/0x640 mm/page-writeback.c:2491
 __writeback_single_inode+0x156/0x1160 fs/fs-writeback.c:1622
 writeback_sb_inodes+0xb30/0x1850 fs/fs-writeback.c:1913
 wb_writeback+0x482/0xd50 fs/fs-writeback.c:2087
 wb_do_writeback fs/fs-writeback.c:2230 [inline]
 wb_workfn+0x423/0xee0 fs/fs-writeback.c:2270
 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x2f34/0x2f40 fs/ext4/inode.c:2759
Code: c1 03 38 c1 0f 8c ac fd ff ff 4c 89 e7 e8 a4 95 ac ff e9 9f fd ff ff e8 ba aa 5b ff 0f 0b e8 b3 aa 5b ff 0f 0b e8 ac aa 5b ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 54 53 48 89
RSP: 0018:ffffc90004c3f040 EFLAGS: 00010293
RAX: ffffffff8226a7c4 RBX: 0000008410000000 RCX: ffff888026351dc0
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc90004c3f3b0 R08: ffff888059190a5f R09: 1ffff1100b23214b
R10: dffffc0000000000 R11: ffffed100b23214c R12: 1ffff92000987ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88807397e000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f921ff8 CR3: 000000007f094000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400