------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2803!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 2962 Comm: kworker/u8:6 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Workqueue: writeback wb_workfn (flush-7:1)
RIP: 0010:ext4_do_writepages+0x45f0/0x4600 fs/ext4/inode.c:2802
Code: c6 60 f7 e3 8b e8 70 29 a4 fe 90 0f 0b e8 78 fb 40 ff 4c 89 f7 48 c7 c6 40 fc e3 8b e8 59 29 a4 fe 90 0f 0b e8 61 fb 40 ff 90 <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000b35ed80 EFLAGS: 00010293
RAX: ffffffff8283ee1f RBX: 0000004210000000 RCX: ffff888031918000
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc9000b35f190 R08: ffff888048c8ba17 R09: 1ffff11009191742
R10: dffffc0000000000 R11: ffffed1009191743 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff1100f5f4cc7
FS:  0000000000000000(0000) GS:ffff8881253a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555593a94a28 CR3: 000000007a500000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3019
 do_writepages+0x32e/0x550 mm/page-writeback.c:2554
 __writeback_single_inode+0x133/0x1060 fs/fs-writeback.c:1750
 writeback_sb_inodes+0x92e/0x1940 fs/fs-writeback.c:2041
 wb_writeback+0x445/0xad0 fs/fs-writeback.c:2227
 wb_do_writeback fs/fs-writeback.c:2374 [inline]
 wb_workfn+0x3f8/0xef0 fs/fs-writeback.c:2414
 process_one_work+0x949/0x15a0 kernel/workqueue.c:3279
 process_scheduled_works kernel/workqueue.c:3362 [inline]
 worker_thread+0xb46/0x1140 kernel/workqueue.c:3443
 kthread+0x388/0x470 kernel/kthread.c:467
 ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x45f0/0x4600 fs/ext4/inode.c:2802
Code: c6 60 f7 e3 8b e8 70 29 a4 fe 90 0f 0b e8 78 fb 40 ff 4c 89 f7 48 c7 c6 40 fc e3 8b e8 59 29 a4 fe 90 0f 0b e8 61 fb 40 ff 90 <0f> 0b 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffc9000b35ed80 EFLAGS: 00010293
RAX: ffffffff8283ee1f RBX: 0000004210000000 RCX: ffff888031918000
RDX: 0000000000000000 RSI: 0000004000000000 RDI: 0000000000000000
RBP: ffffc9000b35f190 R08: ffff888048c8ba17 R09: 1ffff11009191742
R10: dffffc0000000000 R11: ffffed1009191743 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000004000000000 R15: 1ffff1100f5f4cc7
FS:  0000000000000000(0000) GS:ffff8881253a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3111cff8 CR3: 000000007d1fc000 CR4: 00000000003526f0