------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2748! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 228 Comm: kworker/u8:5 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: writeback wb_workfn (flush-7:8) pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ext4_do_writepages+0x32ac/0x32b0 fs/ext4/inode.c:2747 lr : ext4_do_writepages+0x32ac/0x32b0 fs/ext4/inode.c:2747 sp : ffff80009b956c60 x29: ffff80009b957040 x28: dfff800000000000 x27: ffff80009b957460 x26: 1ffff0001372ae8c x25: 1fffe0001da518c8 x24: ffff80009b9570c0 x23: ffff0000de8c1f48 x22: ffff0000ed28e000 x21: ffff0000de8c2168 x20: 0000004210000000 x19: 0000000000000001 x18: 1fffe000337d1c76 x17: ffff80008f67e000 x16: ffff80008051e65c x15: 0000000000000008 x14: 1ffff0001372adf8 x13: 0000000000000000 x12: 0000000000000000 x11: ffff70001372ae00 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c5e41e80 x7 : 0000000000000000 x6 : 0000000000000080 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001 x2 : 0000000000000000 x1 : 0000004000000000 x0 : 0000000000000000 Call trace: ext4_do_writepages+0x32ac/0x32b0 fs/ext4/inode.c:2747 (P) ext4_writepages+0x178/0x2a0 fs/ext4/inode.c:2953 do_writepages+0x270/0x468 mm/page-writeback.c:2636 __writeback_single_inode+0x15c/0x13e8 fs/fs-writeback.c:1680 writeback_sb_inodes+0x558/0xe38 fs/fs-writeback.c:1976 wb_writeback+0x3cc/0xd70 fs/fs-writeback.c:2156 wb_do_writeback fs/fs-writeback.c:2303 [inline] wb_workfn+0x338/0xdc0 fs/fs-writeback.c:2343 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Code: d4210000 97d995b8 d4210000 97d995b6 (d4210000) ---[ end trace 0000000000000000 ]---