Rusty-demo crashes at the end of rusty-demo

[jschwe]

Rusty-demo runs fine until the end using qemu on WSL2, however it crashes after the last test has finished ( somewhere after main returns). It is then stuck and the qemu process does not end.
This does not happen when using the integration tests in libhermit-rs, however those are exited via the debug device in qemu.

I'll do some further investigating when I have the time.

Update: This seems to be a general problem, since this is also happening in CI - See https://github.com/jschwe/rusty-hermit/runs/1192410905 .

Log

$ qemu-system-x86_64 -cpu qemu64,apic,fsgsbase,rdtscp,xsave,fxsr -display none -smp 1 -m 1G -serial stdio -kernel loader/target/x86_64-unknown-hermit-loader/debug/rusty-loader -initrd target/x86_64-unknown-hermit/debug/rusty_demo
[LOADER] Loader: [0x100000 - 0x336018]
[LOADER] Found Multiboot information at 0x9500
[LOADER] Found module: [0x338000 - 0x205af10]
[LOADER] Module length: 0x1d22f10
[LOADER] Found an ELF module at 0x338000
[LOADER] Map 200 pages at 0x338000 (page size 4 KByte)
[LOADER] Map 15 pages at 0x400000 (page size 2048 KByte)
[LOADER] Allocating 0x268 bytes at 0x133E00, index 0
[LOADER] Allocating 0x8B8 bytes at 0x134080, index 640
[LOADER] Allocating 0xD0 bytes at 0x134980, index 2944
[LOADER] Allocating 0xE0 bytes at 0x134A80, index 3200
[LOADER] This is a supported HermitCore Application
[LOADER] Found entry point: 0x197710
[LOADER] File Size: 3094321 Bytes
[LOADER] Mem Size: 3104840 Bytes
[LOADER] start 0x338000, size 0x2f6048
[LOADER] Load HermitCore Application at 0x2200000
[LOADER] Found TLS starts at 0x2469e78 (size 304 Bytes)
[LOADER] BootInfo located at 0x133140
[LOADER] Use stack address 0x3f8000
[LOADER] Jumping to HermitCore Application Entry Point at 0x597710
[0][INFO] Welcome to HermitCore-rs 0.3.40
[0][INFO] Kernel starts at 0x400000
[0][INFO] BSS starts at 0x6f3780
[0][INFO] TLS starts at 0x2469e78 (size 304 Bytes)
[0][INFO] Found Multiboot info at 0x9500
[0][INFO] Found cmdline at 0x33703e (size 62)
[0][INFO] Total memory size: 1023 MB
[0][INFO] Kernel region: [0x400000 - 0x800000]
[0][INFO] A pure Rust application is running on top of HermitCore!
[0][INFO] Heap: size 910 MB, start address 0x800000
[0][INFO] Heap is located at 0x800000 -- 0x39600000 (0 Bytes unmapped)
[0][INFO]
[0][INFO] ===================== PHYSICAL MEMORY FREE LIST ======================
[0][INFO] 0x00000039600000 - 0x0000003FFE0000
[0][INFO] ======================================================================
[0][INFO]
[0][INFO]
[0][INFO] ================== KERNEL VIRTUAL MEMORY FREE LIST ===================
[0][INFO] 0x00000039600000 - 0x00800000000000
[0][INFO] ======================================================================
[0][INFO]
[0][INFO]
[0][INFO] ========================== CPU INFORMATION ===========================
[0][INFO] Model: QEMU Virtual CPU version 2.5+
[0][INFO] Frequency: 2589 MHz (from Measurement)
[0][INFO] SpeedStep Technology: Not Available
[0][INFO] Features: MMX SSE SSE2 SSE3 MCE FXSR XSAVE RDTSCP CLFLUSH HYPERVISOR FSGSBASE
[0][INFO] Physical Address Width: 40 bits
[0][INFO] Linear Address Width: 48 bits
[0][INFO] Supports 1GiB Pages: No
[0][INFO] ======================================================================
[0][INFO]
[0][INFO] HermitCore-rs booted on 2020-10-01 at 09:28:46
[0][WARN] PCI Device @8086:7000 has multiple functions! Currently only one is handled.
[0][INFO]
[0][INFO] ======================== PCI BUS INFORMATION =========================
[0][INFO] 00:00 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma] [8086:1237]
[0][INFO] 00:01 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] [8086:7000]
[0][INFO] 00:02 VGA compatible controller [0300]: Unknown Vendor Unknown Device [1234:1111], MemoryBar: 0xfd000000 (size 0x1000000), MemoryBar: 0xfebb0000 (size 0x1000)
[0][INFO] 00:03 Ethernet controller [0200]: Intel Corporation 82540EM Gigabit Ethernet Controller [8086:100E], IRQ 11, MemoryBar: 0xfeb80000 (size 0x20000), IOBar: 0xc000 (size 0x40)
[0][INFO] ======================================================================
[0][INFO]
[0][INFO] Found an ACPI revision 0 table at 0xF5AD0 with OEM ID "BOCHS "
[0][INFO] IOAPIC v32 has 24 entries
[0][INFO] Disable IOAPIC timer
[0][INFO]
[0][INFO] ===================== MULTIPROCESSOR INFORMATION =====================
[0][INFO] APIC in use: xAPIC
[0][INFO] Initialized CPUs: 1
[0][INFO] ======================================================================
[0][INFO]
[0][INFO] HermitCore is running on common system!
[INFO] Spawn network thread with id 2
[WARN] Ethernet interface not available
Hello, world!
Привет мир!
こんにちは世界
你好，世界
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Test hello ... ok
x = 23.87, e^x = 23259977111.3123, ln(e^x) = 23.87
Test arithmetic ... ok
argument[0] = {name}
Test print_argv ... ok
Test print_env ... ok
[0][INFO] Trying to open file on non-existing mount point 'etc'!
Test read_file ... failed!
[0][INFO] Trying to open file on non-existing mount point 'tmp'!
Test create_file ... failed!
this is thread number 0
this is thread number 1
Test threading ... ok
Pi: 3.141592653589587 (sequential)
Test pi_sequential ... ok
Pi: 3.1415926535897665 (with 2 threads)
Test pi_parallel ... ok
Time to solve 18.27907 s, iterations 1000, residuum 0.000804262515677571
Test laplace ... ok
Time to multiply matrix 24.962718 s
Test test_matmul_strassen ... ok
Time to create and to join a thread: 88880003 ticks
Test thread_creation ... ok
[0][ERROR] General Protection (#GP) Exception: ExceptionStackFrame {
instruction_pointer: 0xf000ff53f000ff53,
code_segment: 0x8,
cpu_flags: 0x1206,
stack_pointer: 0x39645d28,
stack_segment: 0x10,
}, error 0x0
[0][ERROR] fs = 0x802340, gs = 0x6F4C80

[stlankes]

Do you use the latest nightly compiler. In this case, it could be same issue like #73

[jschwe]

Yes, that's definitely possible. I was using nightly-2020-10-02.

[jschwe]

Closing since this doesn't happen anymore.