------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2760! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 194 Comm: kworker/u4:3 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 Workqueue: writeback wb_workfn (flush-7:0) pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : ext4_writepages+0x28b0/0x28b4 fs/ext4/inode.c:2759 lr : ext4_writepages+0x28b0/0x28b4 fs/ext4/inode.c:2759 sp : ffff800020ac6f00 x29: ffff800020ac7220 x28: dfff800000000000 x27: dfff800000000000 x26: ffff0000e5f80cb8 x25: ffff0000e5f80ce0 x24: ffff700004158e08 x23: ffff0000e5f81098 x22: ffff800020ac7610 x21: ffff0000d5776000 x20: 000000c410000000 x19: 0000000000000001 x18: ffff800011b9bf60 x17: ffff80001835a000 x16: ffff8000082d7db8 x15: ffff800017e3b000 x14: 0000000000000001 x13: 1ffff0000306c9e4 x12: 0000000000ff0100 x11: ff00800008d87be4 x10: 0000000000000000 x9 : ffff800008d87be4 x8 : ffff0000ca0d8000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000001 x2 : 0000000000000000 x1 : 0000008000000000 x0 : 0000000000000000 Call trace: ext4_writepages+0x28b0/0x28b4 fs/ext4/inode.c:2759 do_writepages+0x2b0/0x504 mm/page-writeback.c:2491 __writeback_single_inode+0x164/0x1554 fs/fs-writeback.c:1622 writeback_sb_inodes+0x858/0x143c fs/fs-writeback.c:1913 wb_writeback+0x414/0xfcc fs/fs-writeback.c:2087 wb_do_writeback fs/fs-writeback.c:2230 [inline] wb_workfn+0x360/0xe18 fs/fs-writeback.c:2270 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 Code: d4210000 97dc8e70 d4210000 97dc8e6e (d4210000) ---[ end trace 0000000000000000 ]---