GetModuleHandleExW and GetModuleFileNameW take loader locks the suspended
target may hold. While the target is suspended only VirtualQuery and a
lock-free cache of image bases are consulted; an image not yet cached is
classified after the target is resumed, and the target is sampled again.
The statics the checks use are initialized before the first suspend. The
host-code wait is recorded in the libkernel debt file, and the test raises
100 times so it fails on every run without the change.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
In a payload process on a PS5 (firmware 12.70), getrlimit returns
0x200000 for RLIMIT_STACK, infinity for RLIMIT_RSS and RLIMIT_MEMLOCK,
and 1604 for RLIMIT_NPROC, each as both soft and hard limit. These four
threw here. Whether a title process reads the same limits is not
measured.
setrlimit reads getrlimit first, so it now accepts RLIMIT_STACK,
RLIMIT_RSS and RLIMIT_MEMLOCK when the values do not change, as the
payload process does. RLIMIT_NPROC throws: in the payload process
setting it to its current value succeeds, but getrlimit then reads 1443,
and the limit is not stored here. Any other change still throws. The
getrlimit and setrlimit debt entries also record the payload process's
RLIMIT_DATA and RLIMIT_NOFILE readings, its 12555 clamp of RLIMIT_NOFILE
and its RLIMIT_NPROC reading after a same-value set.
AI-assisted: yes
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The OpenOrbis net_http sample stops on 0x5413, the Linux TIOCGWINSZ
that musl sends to standard output; the carried cases covered 0x5401
but not that word, so the test adds it to the malformed words. It also
pins the two boundary words the check takes as well-formed, 0x20046601
(IOC_VOID, length 4) and 0x80006601 (IOC_IN, length 0): on a guest
socket with a null argument they fail with EFAULT, not ENOTTY.
The debt sentence now states the open gap: an input request with
length 0 is not rejected as malformed, while sys_ioctl rejects it in a
kernel built without COMPAT_FREEBSD4, COMPAT_FREEBSD5 and COMPAT_43,
and which of these the PS5 kernel has is unknown.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
FreeBSD's sys_ioctl rejects a request with no direction bit, an output request with no length, or a void request whose length is not an int before it reads the argument or resolves the descriptor. ioctl threw on such a request for a file, pipe or directory, failed with EBADF for a closed descriptor and with EFAULT for a socket given no argument.
(cherry picked from commit 501518f321ac5d0b45ce1090af39c680927edf49)
(cherry picked from commit 3eb7edd9cf)
scePthreadAttrGet copied the attributes of any non-null handle, so a
thread that was joined or had finished still answered 0, and a thread
that ended detached was read after its object had been freed. FreeBSD
11.4's _pthread_attr_get_np returns ESRCH for a dead or reclaimed thread,
and Monster Hunter Wilds (PPSA24191) reuses a slot of its thread table
only when scePthreadAttrGet returns 0x80020003.
After the EINVAL checks it now returns ESRCH unless the handle is a live
guest thread, and copies the fields while holding the thread registry
lock (LockLiveGuestThread), so a detached thread exiting during the call
is not freed under the copy. GuestThreadIsLive uses the same lookup.
pthread_attr_get_np, which the title does not import, is left as it is;
the debt entry records the difference.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
A search range with no free direct memory returned EAGAIN (0x80020023).
A PS5 returns ENOMEM (0x8002000c) for an occupied range, as the
PS5_RetroArch author's console capture records, and PS5_PayloadSDK's
ps5_memory_query, which RetroArch uses for its memory status, gives up
on any other error.
LargestFree now returns the error: ENOMEM when no block is found, and
EAGAIN as before for a negative start, an end at or below the start and
an alignment that overflows when rounded to a page. guest_memory expects
ENOMEM for an occupied range and EAGAIN for those arguments. The
unmeasured argument handling is recorded in the libkernel debt file.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
kevent threw for EV_CLEAR on a socket or the read end of a pipe; Boost.Asio's kqueue reactor, among others, registers every socket that way. On Linux such a knote now watches its host descriptor through an edge watch. It is armed when added, on every later EV_ADD or EV_ENABLE while enabled, and by each host wakeup; when armed it is checked with the level-triggered readiness test and reported with the current data and EV_EOF, or disarmed if no longer ready, as kqueue_scan re-runs the filter; reporting it disarms it until the next edge. Waits block on the watch's epoll descriptor, so a socket that stays readable does not wake them. Windows and macOS still throw. GuestSockets::NativeDescriptor exposes the host socket behind a guest one for the watch.
In a payload process on a PS5 (firmware 12.70),
sysctlbyname("kern.rng_pseudo") answers a size query with 64 and gives
at most 64 bytes per call, up to a 65536-byte buffer. A buffer smaller
than 64 bytes gets as many bytes as its length and a null length gets
none, both with -1 and ENOMEM; a null buffer with a null length returns
0, and errno is kept when the call succeeds. Here the whole buffer was
filled, a size query threw and the length was never changed. The 64
random bytes are now drawn only for a read that passes both a buffer
and a length.
AI-assisted: yes
Co-Authored-By: Claude Opus 5.5 <[email protected]>
RTP_LOOKUP threw for every thread made with the sce attributes, which
allow only SCHED_FIFO and SCHED_RR, since the rtprio mapping was
unmeasured. In a payload process on a PS5 (firmware 12.70) the lookup
reports type 10 for SCHED_FIFO and 2 for SCHED_RR with prio equal to the
scheduling priority, for the calling thread and for another live thread
by its id; an unknown id fails with ESRCH, and so did function 2. Report
that, and keep RTP_SET throwing for real-time and other threads, where no
accepted value was measured.
Operation 1 threw as unverified, so a title whose call_once path reaches it
stopped. In a payload process on a PS5 (firmware 12.70) operations 0 and 1
fail with EOPNOTSUPP and leave the word unchanged for every word tried,
as FreeBSD 11's __umtx_op_unimpl does. Answer operation 1 like operation 0.
A PS5 (firmware 13.60) reports CPU write 0x2 with CPU read 0x1, 0x80 with 0x40 and 0x200 with 0x100 after a map, sceKernelMprotect, sceKernelMtypeprotect or POSIX mprotect; GPU write 0x20 keeps GPU read 0x10 clear. sceKernelVirtualQuery and sceKernelQueryMemoryProtection now report the protection that way.
The C runtime allows 512 stdio streams by default, so after about 509
guest fopen/fdopen streams every further stream failed with EMFILE,
including the std::ifstream APR opens for each read, while getrlimit
reports 8192 open files. Raise the limit to 8192 when libkernel loads,
as the Linux build raises RLIMIT_NOFILE.
PPSA34015 (EA SPORTS FC 27) stopped with "Joining guest thread: Access is
denied": scePthreadJoin waited on a thread that another call released
under it, and then waited on its closed handle. As FreeBSD 11.4's
thr_join.c and thr_detach.c do with the joiner field, scePthreadDetach
now returns EINVAL while a thread waits to join the target, a second
concurrent scePthreadJoin returns EOPNOTSUPP, a cancelled join backs out,
and a completed join leaves the thread detached.
A shared mapping is a view of a file section created on the descriptor's
handle, read-write when the descriptor is, otherwise read-only. A private
mapping is a copy of the file read at mmap, as POSIX allows. Anonymous
shm_open objects and JIT shared memory descriptors are temporary files on
Windows, so mmap now maps them too (it failed with EOPNOTSUPP before).
mprotect of a mapped view above the view's protection fails with EACCES
before any bookkeeping changes. The cases Windows cannot represent are
listed in the libkernel debt.
Dusklight (PPSA99305) uses SQLite in WAL mode, which maps its -shm file.
On Windows main f0634088b every start logged "Failed to start
transaction: disk I/O error" for its Dawn and pipeline caches (3 of 3
runs); with this change the caches initialise and their WAL files fill
(4 of 4 runs). The title reaches its menu either way.
A shared mapping may end inside the 16 KiB page that holds the end of
the file, as POSIX mmap allows: the view ends with the file's last 4 KiB
host page, which Windows zero-fills past the end, the rest of the guest
page is private zero pages, and the file never grows. A mapping that
reaches a whole page past the end still fails with EOPNOTSUPP.
PS5LM Plus (PPSA99581) loads its model with llama.cpp, which maps the
whole GGUF file shared and read-only. With a 491,400,032-byte model,
Windows main 5de7a46e0 and this change without the last page logged
"llama_model_load: error loading model: mmap failed: Operation not
supported" (3 of 3 runs); now the model loads and the completion of
"The capital of France is" starts with " Paris" (3 of 3 runs).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Adrià