MSG_CMSG_CLOEXEC has not been working since 2015 (SVN r284380) because
_finstall expects O_CLOEXEC and not UF_EXCLOSE as the flags argument.
This was probably not noticed because we don't have a test for this flag
so this commit adds one. I found this problem because one of the
libwayland tests was failing.
Fixes: ea31808c3b ("fd: move out actual fp installation to _finstall")
MFC after: 3 days
Reviewed By: mjg, kib
Differential Revision: https://reviews.freebsd.org/D29328
It seems like GCC's -Wsign-compare is stricter and also warns for
constants. Appease GCC by adding the required casts.
Fixes: 96a9e50e63 ("ptrace_test: Add more debug output on test failures")
Reported by: Jenkins CI
ATF now opens the results file (without CLOEXEC), so the child actually
has a valid file descriptor 3. To fix this simply use a large number that
will definitely not be a valid file descriptor.
Reviewed by: jhb, cem, lwhsu
Differential Revision: https://reviews.freebsd.org/D28889
I've run these tests many times in a loop on multiple architectures and
it works reliably for me, maybe it's time to retire these skips?
This also adds an additional waitpid to one of the tests to avoid
a potential race condition (suggested by markj@).
PR: 239397, 244056, 239425, 240510, 220841, 243605
Reviewed By: markj
Differential Revision: https://reviews.freebsd.org/D28888
Mostly automatic, using
`CHILD_REQUIRE\(([^|&\n]*) ==` -> `CHILD_REQUIRE_EQ_INT($1,`
`ATF_REQUIRE\(([^|&\n]*) ==` -> `REQUIRE_EQ_INT($1,` followed by
git-clang-format -f and then manually checking ones that contain ||/&&.
Test Plan:
Still getting the same failure but now it prints
`psr.sr_error (0) == EBADF (9) not met` instead of just failing
without printing the values.
PR: 243605
Reviewed By: jhb
Differential Revision: https://reviews.freebsd.org/D28887
I changed the Makefile to use SRCS instead of LDADD, but since there is
still and absolute path to the source the .o file was created inside the
source directory instead of the build directory.
It would be nice if this was an error/warning by default, but for now just
fix this issue by using .PATH and the base name of the file.
Reported by: cy, peterj
This avoids a SIGILL when running these tests on QEMU (which
defaults to a basic amd64 CPU without SSE4.2).
This commit also tests the table-based implementations in addition to
testing the hw-accelerated crc32 versions.
Reviewed By: cem, kib, markj
Differential Revision: https://reviews.freebsd.org/D28395
During the life of a process, new file descriptor tables may be allocated. When
a new table is allocated, the old table is placed in a free list and held onto
until all processes referencing them exit.
When a new file descriptor table is allocated, the old file descriptor table
can be freed when the current process has a single-thread and the file
descriptor table is not being shared with any other processes.
Reviewed by: kevans
Approved by: kevans (mentor)
Differential Revision: https://reviews.freebsd.org/D18617
This is a workaround for the current continuously failing test case
sys.kern.sonewconn_overflow.sonewconn_overflow_01
The side effect is the dmesg buffer got cleared and may effect other tests
depends on dmesg output running in parallel. The better solution would be
tailing the log file like /var/log/debug.log
Sponsored by: The FreeBSD Foundation
Repeating the default WARNS here makes it slightly more difficult to
experiment with default WARNS changes, e.g. if we did something absolutely
bananas and introduced a WARNS=7 and wanted to try lifting the default to
that.
Drop most of them; there is one in the blake2 kernel module, but I suspect
it should be dropped -- the default WARNS in the rest of the build doesn't
currently apply to kernel modules, and I haven't put too much thought into
whether it makes sense to make it so.
memfd_create is implemented on top of posixshm, so this is a logically
correct place for them to be. Moreover, this reduces the number of places to
look to run tests when working in this part of the tree.
Discussed with: kib (to some extent, a while ago)
Use MACHINE_CPUARCH with arm64 (aarch64) when we build code that could run
on any 64-bit Arm instruction set. This will simplify checks in downstream
consumers targeting prototype instruction sets.
The only place we check for MACHINE_ARCH == aarch64 is when building the
device tree blobs. As these are targeting current generation ISAs.
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D26370
Main part is that kern_copyin on amd64 after LA57 should query the top
of UVA for correct operations. In fact it should started doing that
after the workaround for AMD bug with IRET in the last user page was
fixed by reducing UVA by a page.
Also since we started calculating top of UVA, fix MIPS according to
the comment.
Reported by: lwhsu
PR: 248933
Reviewed by: alc, markj
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D26312
memfd_create fds will no longer require an ftruncate(2) to set the size;
they'll grow (to the extent that it's possible) upon write(2)-like syscalls.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D25502
Similar to mmap'ing vnodes, posixshm should count any mapping where maxprot
contains VM_PROT_WRITE (i.e. fd opened r/w with no write-seal applied) as
writable and thus blocking of any write-seal.
The memfd tests have been amended to reflect the fixes here, which notably
includes:
1. Fix for error return bug; EPERM is not a documented failure mode for mmap
2. Fix rejection of write-seal with active mappings that can be upgraded via
mprotect(2).
Reported by: markj
Discussed with: markj, kib
The debugger like truss(1) depends on the wait(2) syscall. This syscall
waits for ALL children. When it is waiting for ALL child's the children
created by process descriptors are not returned. This behavior was
introduced because we want to implement libraries which may pdfork(1).
The behavior of process descriptor brakes truss(1) because it will
not be able to collect the status of processes with process descriptors.
To address this problem the status is returned to parent when the
child is traced. While the process is traced the debugger is the new parent.
In case the original parent and debugger are the same process it means the
debugger explicitly used pdfork() to create the child. In that case the debugger
should be using kqueue()/pdwait() instead of wait().
Add test case to verify that. The test case was implemented by markj@.
Reviewed by: kib, markj
Discussed with: jhb
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D20362
ATF functions such as ATF_REQUIRE do not work correctly in child processes.
Use plain C functions to report errors instead.
In the parent, check for the untimely demise of children. Without this,
the test hung until the framework's timeout.
Raise the resource limit on the number of open files. If this was too low,
the test hit the two problems above.
Restore the kern.maxfiles sysctl OID in the cleanup function.
The body prematurely removed the symlink in which the old value was saved.
Make the test more robust by opening more files. In fact, due to the
integer division by 4, this was necessary to make the test valid with
some initial values of maxfiles. Thanks, asomers@.
wait() for children instead of sleeping.
Clean up a temporary file created by the test ("afile").
Reviewed by: asomers
MFC after: 1 week
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D21900
memfd_create is effectively a SHM_ANON shm_open(2) mapping with optional
CLOEXEC and file sealing support. This is used by some mesa parts, some
linux libs, and qemu can also take advantage of it and uses the sealing to
prevent resizing the region.
This reimplements shm_open in terms of shm_open2(2) at the same time.
shm_open(2) will be moved to COMPAT12 shortly.
Reviewed by: markj, kib
Differential Revision: https://reviews.freebsd.org/D21393
machine/regnum.h ends up being included by sys/procfs.h and sys/ptrace.h via
machine/reg.h. Many of the regnum definitions are too short and too generic
to be exposing to any userland application including one of these two
headers. Moreover, these actively cause build failures in googletest
(template <typename T1 ...> expanding to template <typename 9 ...>).
Hide the definitions behind _KERNEL or _WANT_MIPS_REGNUM, and patch all of
the userland consumers to define as needed.
Discussed with: imp, jhb
Reviewed by: imp, jhb
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D21330
Inform D that C executed procctl(PROC_PDEATHSIG_CTL). Otherwise D
might allow B to exit before C is set up to receive a signal on the
parent exit. In this case, C waits forever for the signal and test
hangs.
PR: 237657
Reported and tested by: lwhsu
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
ptrace(PT_DETACH) requires stopped debuggee, otherwise it fails. When
the call fails, the C process is left as debuggee of the process D,
and might be killed too early if process D exits occurs fast enough.
Since pipes are not closed in the forked children, this resulted in
the test hanging, since no write occured from C to wake A.
PR: 237657
Reported and tested by: lwhsu
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
The process is reparented to the debugger while it is attached.
B B
/ ----> |
A A D
Every time when the process is reparented, it is added to the orphan list
of the previous parent:
A->orphan = B
D->orphan = NULL
When the A process will close the process descriptor to the B process,
the B process will be reparented to the init process.
B B - init
| ---->
A D A D
A->orphan = B
D->orphan = B
In this scenario, the B process is in the orphan list of A and D.
When the last process descriptor is closed instead of reparenting
it to the reaper let it stay with the debugger process and set
our previews parent to the reaper.
Add test case for this situation.
Notice that without this patch the kernel will crash with this test case:
panic: orphan 0xfffff8000e990530 of 0xfffff8000e990000 has unexpected oppid 1
Reviewed by: markj, kib
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D20361
