emaste [Mon, 1 Aug 2016 16:18:01 +0000 (16:18 +0000)]
iMFC r303400: libcxxrt: fix demangling of wchar_t
'wchar_t' is 7 characters long, not 6. r303297 (MFC'd in r303398) fixed
this in libelftc, but not the second copy of this file that we have in
libcxxrt.
MFC r302929: Now that potentially buggy versions of Xen are automatically
detected (see r302635, MFCed as r302895), there is no need to force msix
interrupt migration off via loader.conf.
MFC 303164: Add more documentation regarding unsafe AIO requests.
The asynchronous I/O changes made previously result in different
behavior out of the box. Previously all AIO requests failed with
ENOSYS / SIGSYS unless aio.ko was explicitly loaded. Now, some AIO
requests complete and others ("unsafe" requests) fail with EOPNOTSUPP.
Reword the introductory paragraph in aio(4) to add a general
description of AIO before describing the vfs.aio.enable_unsafe sysctl.
Remove the ENOSYS error description from aio_fsync(2), aio_read(2),
and aio_write(2) and replace it with a description of EOPNOTSUPP.
Remove the ENOSYS error description from aio_mlock(2).
Log a message to the system log the first time a process requests an
"unsafe" AIO request that fails with EOPNOTSUPP. This is modeled on
the log message used for processes using the legacy pty devices.
Add new System Hardening menu and options to bsdinstall.
This patch add new 'hardening' file responsible for new bsdinstall
'System Hardening' menu allowing users to set some sane and carefully
picked system security options (like random process id's, hiding
other users/groups processes and others).
All options are OFF by default in this patch due to POLA principle
with intention to turn change some of them to ON by default in future.
MFC 303109: Update crashinfo to work with newer gdb from ports.
If gdb from ports is installed, use it instead of the base system gdb
to extract variables from a kernel. Note that base gdb and ports gdb
do not support the same options for invoking a single command in batch
mode, so a wrapper shell function is used. In addition, prefer kgdb
from ports when generating a backtrace if present.
r303272:
SYSTEM_COMPILER: Rework the logic to allow a 'make test-system-compiler'.
r303273:
Fix empty WANT_COMPILER_TYPE when neither compiler is bootstrapped.
MFC r303034: Include makewhatis in ITOOLS when MK_MAN_UTILS is true
Previously it was conditional on MK_MAN. It's possible to build
FreeBSD with man pages but without man page tools. MK_MAN_UTILS
is the conditional used in share/man/Makefile for determining whether
makewhatis is executed at install time, so it is the proper one for
ITOOLS as well.
MFC r303046:
libc: tag the rune initialization function prototypes visibility as hidden.
It is good practice to export as few symbols as possible from your shared
libraries, so use the GCC visibility attribute in this case, matching what
Apple's libc does.
MFC 302899: Add documentation for the sigevent structure.
- Add a sigevent(3) manpage to give a general overview of the sigevent
structure and the available notification mechanisms.
- Document that AIO requests contain a nested sigevent structure that can
be used to request completion notification.
- Expand the sigevent details in other manuals to note details such as
the extra values stored in a queued signal's information or in a posted
kevent.
_Unwind_Exception is required to be double word aligned. GCC has
interpreted this to mean "use the maximum useful alignment for the
target" so follow that lead.
MFC 302860: Fix aio system call wrappers in librt.
- Update aio_return/waitcomplete wrappers for the ssize_t return type.
- Fix the aio_return() wrapper to fail with EINVAL on a pending job.
This matches the semantics of the in-kernel system call. Also,
aio_return() returns errors via errno, not via the return value.
Approved by: re (gjb)
Sponsored by: Chelsio Communications
MFC r303157: libcxxrt: add padding in __cxa_allocate_* to fix alignment
The addition of the referenceCount to __cxa_allocate_exception put the
unwindHeader at offset 0x58 in __cxa_exception, but it requires 16-byte
alignment. In order to avoid changing the current __cxa_exception ABI
(and thus breaking its consumers), add explicit padding in the
allocation routines (and account for it when freeing).
This is intended as a lower-risk change for FreeBSD 11. A "more correct"
fix should be prepared for upstream and -CURRENT.
Approved by: re (gjb)
Sponsored by: The FreeBSD Foundation
MFC r302567:
In vgonel(), postpone setting BO_DEAD until VOP_RECLAIM() is called,
if vnode is VMIO. For VMIO vnodes, set BO_DEAD in vm_object_terminate().
MFC r302904:
Fix a bug which results in a core dump when running netstat with
the -W option and having a listening SCTP socket.
The bug was introduced in r279122 when adding support for libxo.
MFC r302907:
When calling netstat -Laptcp the local address values are not aligned
with the corresponding entry in the table header. r295136
increased the value width from 14 to 32 without the corresponding
change to the table header. This commit adds the change to the table
header width.
MFC r302917:
Ensure that the -a, -W, -L options for SCTP behave similar
as for TCP.
MFC r302928:
Address a potential memory leak found a the clang static code analyzer
running on the userland stack.
MFC r302930:
Don't free a data chunk twice.
Found by the clang static code analyzer running for the userland stack.
MFC r302935:
Deal with a portential memory allocation failure, which was reported
by the clang static code analyzer.
Joint work with rrs@.
MFC r302942:
Add missing sctps_reasmusrmsgs counter.
Joint work with rrs@.
MFC r302945:
Don't duplicate code for SCTP, just use the ones used for UDP and TCP.
This fixes a bug with link local addresses. This will require and
upcoming change in the kernel to bring SCTP to the same behaviour
as UDP and TCP.
MFC r302949:
Fix the PR-SCTP behaviour.
This is done by rrs@.
MFC r302950:
Add a constant required by RFC 7496.
MFC r303024:
netstat and sockstat expect the IPv6 link local addresses to
have an embedded scope. So don't recover.
MFC r303025:
Use correct order of conditions to avoid NULL deref.
MFC r303073:
Fix a bug in deferred stream reset processing which results
in using a length field before it is set.
Thanks to Taylor Brandstetter for reporting the issue and
providing a fix.
r302450: libunwind: update to upstream snapshot r272680
The key improvement is that it may be built without cross-unwinding
support, which significantly reduces the stack space requirement.
r302456: libunwind: enable only the native unwinder by default
This significantly reduces stack space requirements, and runtimes
require only native unwinding.
r302475: libunwind: limit stack usage in unwind cursor
This may be reworked upstream but in the interim should address the
stack usage issue reported in the PR.
r303016: llvm-libunwind: use conventional (non-Darwin) X86 register numbers
For historical reasons Darwin/i386 has ebp and esp swapped in the
eh_frame register numbering. That is:
Darwin Other
Reg # eh_frame eh_frame DWARF
===== ======== ======== =====
4 ebp esp esp
5 esp ebp ebp
Although the UNW_X86_* constants are not supposed to be coupled to
DWARF / eh_frame numbering they are currently conflated in LLVM
libunwind, and thus we require the non-Darwin numbering.
PR: 206384
Approved by: re (kib)
Sponsored by: The FreeBSD Foundation
MFC r303031: clang++: Always use --eh-frame-hdr on FreeBSD, even for -static
FreeBSD uses LLVM's libunwind on FreeBSD/arm64 today (and we expect to
use it more widely in the future) and it requires the EH frame segment
in static binaries.
MFC r302980
Break up vm_fault()'s implementation of the read-ahead and delete-behind
optimizations into two distinct pieces. The first piece consists of the
code that should only be performed once per page fault and requires the
map to be locked. The second piece consists of the code that should be
performed each time a pager is called on an object in the shadow chain.
(This second piece expects the map to be unlocked.)
Previously, the entire implementation could be executed multiple times.
Moreover, the second and subsequent executions would occur with the map
unlocked. Usually, the ensuing unsynchronized accesses to the map were
harmless because the map was not changing. Nonetheless, it was possible
for a use-after-free error to occur, where vm_fault() wrote to a freed
map entry. This change corrects that problem.
Reduce the disc1.iso size from 850+M to just over 650M.
As a result of this change, the 'kernel-dbg.txz' distribution
is no longer provided on disc1.iso, and deselected by default
in bsdinstall(8). When 'kernel-dbg.txz' is selected, network
configuration happens before the installer proceeds, to fetch
the distribution from the mirrors.
This is a direct commit to stable/11, as there is intention
to solve this differently for 12.0-RELEASE.
Reviewed by: nwhitehorn (glanced at)
Approved by: re (hrs)
Sponsored by: The FreeBSD Foundation
Fix a copy/paste bug introduced during X86_64 Linuxulator work.
FreeBSD support NX bit on X86_64 processors out of the box, for i386 emulation
use READ_IMPLIES_EXEC flag, introduced in r302515.
While here move common part of mmap() and mprotect() code to the files in compat/linux
to reduce code dupcliation between Linuxulator's
Implement Linux personality() system call mainly due to READ_IMPLIES_EXEC flag.
In Linux if this flag is set, PROT_READ implies PROT_EXEC for mmap().
Linux/i386 set this flag automatically if the binary requires executable stack.
READ_IMPLIES_EXEC flag will be used in the next Linux mmap() commit.
MFC r302772: re-apply r299908: zfsctl_snapdir_lookup: clear VV_ROOT of
snapshot's root
The change has been undone in r301275 on the assumption that it was no
longer required. But that was incorrect, because in this case (and only
in this case) the snapshot root vnode is looked up before z_parent is
fixed up.
Fix problems in the FQ-PIE AQM cleanup code that could leak memory or
cause a crash.
Because dummynet calls pie_cleanup() while holding a mutex, pie_cleanup()
is not able to use callout_drain() to make sure that all callouts are
finished before it returns, and callout_stop() is not sufficient to make
that guarantee. After pie_cleanup() returns, dummynet will free a
structure that any remaining callouts will want to access.
Fix these problems by allocating a separate structure to contain the
data used by the callouts. In pie_cleanup(), call callout_reset_sbt()
to replace the normal callout with a cleanup callout that does the cleanup
work for each sub-queue. The instance of the cleanup callout that
destroys the last flow will also free the extra allocated block of memory.
Protect the reference count manipulation in the cleanup callout with
DN_BH_WLOCK() to be consistent with all of the other usage of the reference
count where this lock is held by the dummynet code.
Don't check the area that the host has not filled.
PR: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209443
PR: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210425
Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reviewed by: sephe, Dexuan Cui <decui microsoft com>
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D6955
302605
hyperv/stor: Save the response status and xfer length properly.
The current command response handling discards status and xfer
length unconditionally, so that all of the commands would be
considered successful, even if errors happened. When errors
really happens, this causes all kinds of wiredness, since the
buffer will not be filled on the host side and sense data will
be ignored.
Most of the time, errors do not happen, however, error does
happen for the request sent immediately after the disk resizing.
Discarding the SCSI status (SCSI_STATUS_CHECK_COND) and sense
data (capacity changes) prevents the disk resizing from working
properly.
This commit saves the response status and xfer length properly
for later use.
Submitted by: Dexuan Cui <decui microsoft com>
Noticed by: sephe
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7181
ed [Tue, 12 Jul 2016 06:25:28 +0000 (06:25 +0000)]
MFC r302448:
Don't forget to set sa->narg for CloudABI system calls.
It turns out that this value is not used within the system call code
under normal conditions, except when using tracing tools like ktrace.
If we forget to set this value, it is set to random garbage. This may
cause ktrace to hang indefinitely, making it impossible to kill.
Approved by: re@
Reported by: Michael Plass
PR: 210800
Allow - in distribution names. This is needed for freebsd-update to
work with 11.0+, where the debugging symbols use a new naming scheme
for release distribution files.
projects / FreeBSD / FreeBSD.git / log