------------[ cut here ]------------ kernel BUG at fs/f2fs/data.c:356! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:f2fs_write_end_io+0xb52/0xb60 fs/f2fs/data.c:355 Code: e8 53 de 13 fe e9 91 f6 ff ff 89 d9 80 e1 07 38 c1 0f 8c e3 f6 ff ff 48 89 df e8 c9 de 13 fe e9 d6 f6 ff ff e8 5f 77 b1 fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000147978 EFLAGS: 00010246 RAX: ffffffff840efae1 RBX: 0000000000000000 RCX: ffff88801b6dbc80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000100 RBP: ffff8880613753c0 R08: 0000000000000000 R09: 0000000000000100 R10: dffffc0000000000 R11: fffff940002f32e9 R12: 0000000000000006 R13: ffffea0001799740 R14: 000000000000000b R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888126d06000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd36928ff8 CR3: 000000003284e000 CR4: 00000000003526f0 Call Trace: blk_update_request+0x57e/0xe60 block/blk-mq.c:1007 blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1169 blk_complete_reqs block/blk-mq.c:1244 [inline] blk_done_softirq+0x10a/0x160 block/blk-mq.c:1249 handle_softirqs+0x226/0x6d0 kernel/softirq.c:622 run_ksoftirqd+0xac/0x210 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:f2fs_write_end_io+0xb52/0xb60 fs/f2fs/data.c:355 Code: e8 53 de 13 fe e9 91 f6 ff ff 89 d9 80 e1 07 38 c1 0f 8c e3 f6 ff ff 48 89 df e8 c9 de 13 fe e9 d6 f6 ff ff e8 5f 77 b1 fd 90 <0f> 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000147978 EFLAGS: 00010246 RAX: ffffffff840efae1 RBX: 0000000000000000 RCX: ffff88801b6dbc80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000100 RBP: ffff8880613753c0 R08: 0000000000000000 R09: 0000000000000100 R10: dffffc0000000000 R11: fffff940002f32e9 R12: 0000000000000006 R13: ffffea0001799740 R14: 000000000000000b R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888126d06000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd36928ff8 CR3: 000000002eae0000 CR4: 00000000003526f0