------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2760!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5211 Comm: kworker/u4:15 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:ext4_writepages+0x2e41/0x2e50 fs/ext4/inode.c:2759
Code: c1 03 38 c1 0f 8c ac fd ff ff 4c 89 e7 e8 a7 97 ad ff e9 9f fd ff ff e8 0d 7b 5d ff 0f 0b e8 06 7b 5d ff 0f 0b e8 ff 7a 5d ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 41 57 41 56 41 54
RSP: 0018:ffffc900046c7040 EFLAGS: 00010293
RAX: ffffffff82234361 RBX: 000000c410000000 RCX: ffff88802f0c3b80
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900046c73b0 R08: dffffc0000000000 R09: ffffed100ab1300b
R10: ffffed100ab1300b R11: 1ffff1100ab1300a R12: 1ffff920008d8ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88807e28e000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb5c1914000 CR3: 0000000052ea1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3b7/0x610 mm/page-writeback.c:2491
 __writeback_single_inode+0x156/0x1160 fs/fs-writeback.c:1612
 writeback_sb_inodes+0xad8/0x17d0 fs/fs-writeback.c:1903
 wb_writeback+0x468/0xd00 fs/fs-writeback.c:2077
 wb_do_writeback fs/fs-writeback.c:2220 [inline]
 wb_workfn+0x435/0xec0 fs/fs-writeback.c:2260
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 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+0x2e41/0x2e50 fs/ext4/inode.c:2759
Code: c1 03 38 c1 0f 8c ac fd ff ff 4c 89 e7 e8 a7 97 ad ff e9 9f fd ff ff e8 0d 7b 5d ff 0f 0b e8 06 7b 5d ff 0f 0b e8 ff 7a 5d ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 41 57 41 56 41 54
RSP: 0018:ffffc900046c7040 EFLAGS: 00010293
RAX: ffffffff82234361 RBX: 000000c410000000 RCX: ffff88802f0c3b80
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900046c73b0 R08: dffffc0000000000 R09: ffffed100ab1300b
R10: ffffed100ab1300b R11: 1ffff1100ab1300a R12: 1ffff920008d8ee6
R13: dffffc0000000000 R14: 0000008000000000 R15: ffff88807e28e000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5a15e09e9c CR3: 000000007e01d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400