------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2734! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4423 Comm: kworker/u4:9 Not tainted 5.15.186-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: writeback wb_workfn (flush-7:3) pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ext4_writepages+0x2b60/0x2c14 fs/ext4/inode.c:2733 lr : ext4_writepages+0x2b60/0x2c14 fs/ext4/inode.c:2733 sp : ffff80001fc86ee0 x29: ffff80001fc87200 x28: ffff0000de2ddc58 x27: ffff80001fc875f0 x26: dfff800000000000 x25: 0000000000000001 x24: ffff0000de2dde80 x23: ffff80001fc87610 x22: ffff0000d9f6c000 x21: ffff0000d9f6c000 x20: ffff0000de2dda08 x19: 0000008410000000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082bf708 x15: 0000000000000012 x14: 0000000000ff0100 x13: 1ffff0000282c06b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff800008cc8964 x8 : ffff0000ef018000 x7 : ffff800008cc5f88 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000001 x2 : 0000000000000000 x1 : 0000008000000000 x0 : 0000000000000000 Call trace: ext4_writepages+0x2b60/0x2c14 fs/ext4/inode.c:2733 do_writepages+0x36c/0x578 mm/page-writeback.c:2386 __writeback_single_inode+0x148/0x11f0 fs/fs-writeback.c:1647 writeback_sb_inodes+0x7fc/0x1378 fs/fs-writeback.c:1930 wb_writeback+0x3d8/0xe44 fs/fs-writeback.c:2104 wb_do_writeback fs/fs-writeback.c:2247 [inline] wb_workfn+0x350/0xdd8 fs/fs-writeback.c:2288 process_one_work+0x79c/0x1140 kernel/workqueue.c:2310 worker_thread+0x8f4/0x101c kernel/workqueue.c:2457 kthread+0x374/0x454 kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:855 Code: f94057f4 f94063f6 17fffe3d 97dec63f (d4210000) ---[ end trace 1b7ca61f95ec73fd ]---