QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' sh tools/check-pm.sh
BootInfo v1: 6 E820 entries; [(0, 654336, 1, 1), (654336, 1024, 2, 1), (983040, 65536, 2, 1), (1048576, 65929216, 1, 1), (66977792, 131072, 2, 1), (4294705152, 262144, 2, 1)]
PASS: protected-mode registers, BootInfo bytes, E820 map, VGA/serial PM marker, forced A20 failure, bad-GDT #GP(0008) -> #DF -> triple fault
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' GDB='/tmp/build-an-os-tools/bin/gdb-multiarch' python3 tools/check-pipe.py
PASS: Day24 bounded pipe, backpressure, EOF, broken pipe, rollback and recovery
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' GDB='/tmp/build-an-os-tools/bin/gdb-multiarch' python3 tools/check-shell.py
PASS: Day23 Shell normal, parser boundaries, bad ELF, child fault and recovery
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' GDB='/tmp/build-an-os-tools/bin/gdb-multiarch' sh tools/check-fd.sh
PASS: real QEMU PS/2 input woke the fd reader without polling
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x108086: file kernel/task.c, line 1473.

Breakpoint 1, fd_exit_closed_observed () at kernel/task.c:1473
1473	{ __asm__ volatile("nop" ::: "memory"); }
PASS: faulting child closed every fd before ZOMBIE publication
Hardware assisted breakpoint 2 at 0x108469: file kernel/task.c, line 1616.

Breakpoint 2, fd_demo_done () at kernel/task.c:1616
1616	{ __asm__ volatile("nop" ::: "memory"); }
PASS: independent/shared offsets, short EOF, limits, rollback, exit cleanup and page recovery verified
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x108469: file kernel/task.c, line 1616.

Breakpoint 1, fd_demo_done () at kernel/task.c:1616
1616	{ __asm__ volatile("nop" ::: "memory"); }
PASS: six ELF allocation failures plus kernel-stack failure rolled back mapped refs, then recovered
The target architecture is set to "i386".
0x00105485 in idle_once () at kernel/task.c:631
631	}
PASS: terminal reader blocked in trap depth 1, idle PIT advanced, HMP keys produced ab\n
[Inferior 1 (process 1) detached]
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' GDB='/tmp/build-an-os-tools/bin/gdb-multiarch' sh tools/check-fat.sh
PASS: FAT16 geometry, root filtering, offset reads and non-contiguous 2->9->4 chain verified
PASS: FAT demo reaches original blocking keyboard consumer
PASS: loop FAT corruption rejected
PASS: short FAT corruption rejected
PASS: badbpb FAT corruption rejected
PASS: mirror FAT corruption rejected
PASS: rootbound FAT corruption rejected
PASS: dirhi FAT corruption rejected
PASS: emptycluster FAT corruption rejected
PASS: badcluster FAT corruption rejected
PASS: reserved FAT corruption rejected
PASS: outofrange FAT corruption rejected
PASS: oversize FAT corruption rejected
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' GDB='/tmp/build-an-os-tools/bin/gdb-multiarch' IMAGE_SECTORS='16384' PAYLOAD_MAX_BYTES='131072' sh tools/check-block.sh
PASS: IDENTIFY, MBR, two patterned sectors and range rejection verified
PASS: block demo reaches original blocking keyboard consumer
PASS: timeout failure is diagnosed and channel fails closed
PASS: nodrq failure is diagnosed and channel fails closed
PASS: error failure is diagnosed and channel fails closed
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' GDB='/tmp/build-an-os-tools/bin/gdb-multiarch' PAYLOAD_MAX_BYTES='131072' sh tools/check-process.sh
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x1077b8: file kernel/task.c, line 1127.

Breakpoint 1, process_bootstrap_observed () at kernel/task.c:1127
1127	{ __asm__ volatile("nop" ::: "memory"); }
PASS: parent blocked inside top-level wait while BADPTR remained zombie and COUNT runnable
Hardware assisted breakpoint 2 at 0x1078f6: file kernel/task.c, line 1130.

Breakpoint 2, process_demo_done () at kernel/task.c:1130
1130	{ __asm__ volatile("nop" ::: "memory"); }
PASS: two rounds, bad status retries, PID reuse protection, orphan adoption and complete recovery verified
Hardware assisted breakpoint 3 at 0x10184e: file kernel/keyboard.c, line 116.

Breakpoint 3, keyboard_ready () at kernel/keyboard.c:116
116	void keyboard_ready(void) { __asm__ volatile("" ::: "memory"); }
PASS: process demo reaches original blocking keyboard consumer
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x1078f6: file kernel/task.c, line 1130.

Breakpoint 1, process_demo_done () at kernel/task.c:1130
1130	{ __asm__ volatile("nop" ::: "memory"); }
PASS: seven ELF allocation failures plus kernel-stack failure rolled back, then normal spawn recovered
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' sh tools/check-syscall.sh
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x10922a: file kernel/syscall.c, line 269.

Breakpoint 1, syscall_dispatch (frame=0x13cfb4) at kernel/syscall.c:269
269	    KASSERT((frame->cs & 3) == 3 && frame->vector == 128 && frame->error == 0);
PASS: CPL3 int80 used DPL3 interrupt gate; 76-byte frame, post-INT EIP, GPR and saved IF/DF/CF verified
Hardware assisted breakpoint 2 at 0x106b70: file kernel/task.c, line 807.

Breakpoint 2, syscall_demo_done () at kernel/task.c:807
807	{ __asm__ volatile("" ::: "memory"); }
PASS: write/yield, copy-to-user and all return paths verified; bad DPL gate isolated; survivor and page recovery verified
Hardware assisted breakpoint 3 at 0x10184e: file kernel/keyboard.c, line 116.

Breakpoint 3, keyboard_ready () at kernel/keyboard.c:116
116	void keyboard_ready(void) { __asm__ volatile("" ::: "memory"); }
PASS: syscall demo reaches original blocking keyboard consumer
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' GDB='/tmp/build-an-os-tools/bin/gdb-multiarch' sh tools/check-elf.sh
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x40000080

Breakpoint 1, 0x40000080 in ?? ()
PASS: dynamic ELF entry reached CPL3 with private CR3, RO code and RW data
Hardware assisted breakpoint 2 at 0x40000091

Breakpoint 2, 0x40000091 in ?? ()
PASS: C entry stack alignment, clear DF, initialized data and 5000-byte BSS verified
Hardware assisted breakpoint 3 at 0x1072a9: file kernel/task.c, line 976.

Breakpoint 3, elf_demo_done () at kernel/task.c:976
976	{ __asm__ volatile("nop" ::: "memory"); }
PASS: 34 malformed ELF cases, all allocation failures and task-stack rollback recovered
Hardware assisted breakpoint 4 at 0x10184e: file kernel/keyboard.c, line 116.

Breakpoint 4, keyboard_ready () at kernel/keyboard.c:116
116	void keyboard_ready(void) { __asm__ volatile("" ::: "memory"); }
PASS: ELF demo reaches original blocking keyboard consumer
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' KERNEL_MEMORY_MAX_BYTES='262144' sh tools/check-memory.sh
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x1023d0: file kernel/memory.c, line 114.

Breakpoint 1, memory_demo_done () at kernel/memory.c:114
114	void memory_demo_done(void) { __asm__ volatile("" : : : "memory"); }
PASS: guest allocation, exhaustion, patterns, invalid free, recovered bitmaps; pages=16066 end=0x11d780
Hardware assisted breakpoint 2 at 0x10184e: file kernel/keyboard.c, line 116.

Breakpoint 2, keyboard_ready () at kernel/keyboard.c:116
116	void keyboard_ready(void) { __asm__ volatile("" ::: "memory"); }
PASS: memory demo returns to keyboard_ready
[Inferior 1 (process 1) detached]
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' PAYLOAD_MAX_BYTES='131072' KERNEL_MEMORY_MAX_BYTES='262144' sh tools/check-runtime-limit.sh
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x100000

Breakpoint 1, 0x00100000 in _start ()
PASS: stage2 dirtied BSS beyond old 64 KiB runtime limit
Hardware assisted breakpoint 2 at 0x10005b: file kernel/main.c, line 33.

Breakpoint 2, kernel_main (info=0x5000) at kernel/main.c:33
33	    console_init(); /* entry cleared BSS/set stack; UART and VGA precede diagnostics. */
PASS: entry cleared full BSS and exact 256 KiB runtime image entered C
Hardware assisted breakpoint 3 at 0x1072a9: file kernel/task.c, line 976.

Breakpoint 3, elf_demo_done () at kernel/task.c:976
976	{ __asm__ volatile("nop" ::: "memory"); }
PASS: exact-cap image completed allocator, user, syscall and ELF regressions
The target architecture is set to "i386".
0x0000fff0 in ?? ()
Hardware assisted breakpoint 1 at 0x100000

Breakpoint 1, 0x00100000 in _start ()
PASS: exact 128 KiB file crossed real-mode segments, checksum and protected-mode copy
PASS: oversized file and memory headers rejected before payload copy
QEMU='/tmp/build-an-os-tools/bin/qemu-system-i386' QEMU_COMMON='-machine pc-i440fx-7.2 -accel tcg -cpu qemu32 -smp 1 -m 64M -bios /tmp/build-an-os-tools/root2/usr/share/seabios/bios-256k.bin -L /tmp/build-an-os-tools/root2/usr/share/qemu -boot order=c,strict=on -nic none -no-reboot' sh tools/check-keyboard.sh
PASS: HMP real IRQ1 editing/Shift/Caps/Pause/PrintScreen, paused-consumer overflow, reset and LINE: ok