------------[ cut here ]------------ kernel BUG at fs/f2fs/data.c:356! Internal error: Oops - BUG: 00000000f2000800 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 43400005 (nZcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : f2fs_write_end_io+0xa54/0xa78 fs/f2fs/data.c:355 lr : f2fs_write_end_io+0xa54/0xa78 fs/f2fs/data.c:355 sp : ffff800097d27920 x29: ffff800097d27980 x28: 0000000000000006 x27: ffff0000c8fd2780 x26: 0000000000000000 x25: 0000000000000000 x24: 000000000000000b x23: 00000000045dd040 x22: fffffdffc35dd040 x21: ffff0000d7741000 x20: ffff0000dbb48000 x19: dfff800000000000 x18: 1fffe0003377d090 x17: ffff80010c42d000 x16: ffff800082e5e68c x15: 0000000000000005 x14: 1ffff00012fa4f2a x13: 0000000000000000 x12: 0000000000000000 x11: 000000002454a64e x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c1a63900 x7 : ffff8000827e2550 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 000000000000000b Call trace: f2fs_write_end_io+0xa54/0xa78 fs/f2fs/data.c:355 (P) bio_endio+0x8d4/0x910 block/bio.c:1675 blk_update_request+0x474/0xba8 block/blk-mq.c:1007 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1169 lo_complete_rq+0x124/0x274 drivers/block/loop.c:314 blk_complete_reqs block/blk-mq.c:1244 [inline] blk_done_softirq+0x11c/0x168 block/blk-mq.c:1249 handle_softirqs+0x31c/0xc88 kernel/softirq.c:622 run_ksoftirqd+0x70/0xc0 kernel/softirq.c:1063 smpboot_thread_fn+0x4d8/0x9cc kernel/smpboot.c:160 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 Code: 17fffde5 977dbda0 d4210000 977dbd9e (d4210000) ---[ end trace 0000000000000000 ]---