------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2447!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 43 Comm: kworker/u4:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: writeback wb_workfn (flush-7:2)
RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2447 [inline]
RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2488 [inline]
RIP: 0010:ext4_writepages+0x2f61/0x3020 fs/ext4/inode.c:2856
Code: 08 48 89 df e8 90 f2 ca ff 48 8b 3b 48 8b 74 24 40 48 8b 54 24 30 48 8b 4c 24 20 45 89 f0 e8 86 c7 07 00 eb 5b e8 0f 89 86 ff <0f> 0b e8 08 89 86 ff eb 2f e8 01 89 86 ff eb 69 e8 fa 88 86 ff 31
RSP: 0018:ffffc900002cf120 EFLAGS: 00010293
RAX: ffffffff81e994f1 RBX: 0000000000000000 RCX: ffff88810394bcc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900002cf490 R08: dffffc0000000000 R09: ffffed1022d6e5de
R10: ffffed1022d6e5de R11: 1ffff11022d6e5dd R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888116b72f28 R15: 000000000000042b
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00572eb00 CR3: 0000000103986000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x3a9/0x5e0 mm/page-writeback.c:2494
 __writeback_single_inode+0xc6/0xad0 fs/fs-writeback.c:1612
 writeback_sb_inodes+0x9b8/0x1550 fs/fs-writeback.c:1903
 wb_writeback+0x3f1/0x980 fs/fs-writeback.c:2079
 wb_do_writeback fs/fs-writeback.c:2226 [inline]
 wb_workfn+0x350/0xda0 fs/fs-writeback.c:2266
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mpage_map_one_extent fs/ext4/inode.c:2447 [inline]
RIP: 0010:mpage_map_and_submit_extent fs/ext4/inode.c:2488 [inline]
RIP: 0010:ext4_writepages+0x2f61/0x3020 fs/ext4/inode.c:2856
Code: 08 48 89 df e8 90 f2 ca ff 48 8b 3b 48 8b 74 24 40 48 8b 54 24 30 48 8b 4c 24 20 45 89 f0 e8 86 c7 07 00 eb 5b e8 0f 89 86 ff <0f> 0b e8 08 89 86 ff eb 2f e8 01 89 86 ff eb 69 e8 fa 88 86 ff 31
RSP: 0018:ffffc900002cf120 EFLAGS: 00010293
RAX: ffffffff81e994f1 RBX: 0000000000000000 RCX: ffff88810394bcc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900002cf490 R08: dffffc0000000000 R09: ffffed1022d6e5de
R10: ffffed1022d6e5de R11: 1ffff11022d6e5dd R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888116b72f28 R15: 000000000000042b
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00572eb00 CR3: 000000011218a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400