These will reportedly be used in future uma changes.
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D23019
instead of killing the process. The same behaviour of terminating
image activation if the $ORIGIN cannot be resolved for the main
object, is kept.
Reported by: Greg V <greg@unrelenting.technology>
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D23053
We know the binary relative name and can reliably calculate cwd path.
Because realpath(3) was already linked into ld-elf.so.1, reuse it
there to resolve dots and dotdots making the path more canonical.
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D23014
Do not configure any endpoint twice, but instead keep track of which
endpoints are configured on a per device basis, and use an evaluate
endpoint context command instead. When changing the configuration make
sure all endpoints get deconfigured and the configured endpoint mask
is reset.
This fixes an issue where an endpoint might stop working if there is
an error and the endpoint needs to be reconfigured as a part of the
error recovery mechanism in the FreeBSD USB stack.
Tested by: Shichun.Ma@dell.com
MFC after: 1 week
Sponsored by: Mellanox Technologies
It's not immediately clear by what mechanism loader(8) will be loading the
preloaded file. Specifically name-drop loader.conf(5) with a pointer to the
module loading section and a description of what the 'name' should look
like, because that certainly isn't clear from the loader.conf(5) standpoint.
The default loader.conf already has a pointer to md(4) where it appears and
the reference to loader.conf in the new version of this manpage should make
it more clear that this is where one should look for information.
Reported by: swills
Reviewed by: swills, manpages (bcr)
With revision by: imp
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D22844
Currently, our overlay blob will grow to include the size of the complete
overlay blob we're applying. This doesn't scale very well with a lot of
overlays- they tend to include a lot of overhead, and they will generally
only add a fraction of their total size to the blob they're being applied
to.
To combat this, pack the blob as we apply new overlays and keep track of how
many overlays we've applied. Only ubldr has any fixups to be applied after
overlays, so we only need to re-pad the blob in ubldr. Presumably the
allocation won't fail since we just did a lot worse in trying to apply
overlays and succeeded.
I have no intention of removing the padding in make_dtb.sh. There might be
an argument to be had over whether it should be configurable, since ubldr
*is* the only loader that actually has fixups to be applied and we can do
this at runtime, but I'm not too concerned about this.
This diff has been sitting in Phabricator for a year and a half, but I've
decided to flush it as it does make sure that we're scaling the blob
appropriately and leave room at the end for fixups in case of some freak
circumstance where applying overlays leaves us with a blob of insufficient
size.
Reviewed by: gonzo (a long time ago)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D14133
Other mechanisms that resize the shmfd grab a write lock from 0 to OFF_MAX
for safety, so we still get proper synchronization of shmfd->shm_size in
effect. There's no need to block readers/writers of earlier segments when
we're just reserving more space, so narrow the scope -- it would likely be
safe to narrow it completely to just the section of the range that extends
beyond our current size, but this likely isn't worth it since the size isn't
stable until the writelock is granted the first time.
Suggested by: cem (passing comment)
if_vmove can fail if it lost a race and the vnet's already been moved. The
callers (and their callers) can generally cope with this, but right now
success is assumed. Plumb out the ENOENT from if_detach_internal if it
happens so that the error's properly reported to userland.
Reviewed by: bz, kp
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D22780
Unify the keg layout selection paths (keg_small_init, keg_large_init,
keg_cachespread_init), and slightly improve memory efficiecy by:
- using the padding of the final item to store the slab header,
- not going OFFPAGE if we have a choice unless it improves efficiency.
Reviewed by: jeff, markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D23048
- Garbage collect UMA_ZONE_PAGEABLE & UMA_ZONE_STATIC.
- Move flag VTOSLAB from public to private.
- Introduce public NOTPAGE flag and make HASH private.
- Introduce public NOTOUCH flag and make OFFPAGE private.
- Update man page.
The net effect of this should be to make the contract with clients more
clear. Clients should choose constraints, UMA will figure out how to
implement them. This also breaks the confusing double meaning of
OFFPAGE.
Reviewed by: jeff, markj
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D23016
People use rc.conf inside vnet jails to configure networking setups.
Presumably because some sysctl were not virtualised up until r356527 the
script was not run for vnet jails leaving the rc.conf options without
effect for non-obvious reasons. Run the netoptions startup script also
for VNET jails now to make the rc.conf options work.
PR: 243193
MFC after: 2 weeks
Virtualise tcp_always_keepalive, TCP and UDP log_in_vain. All three are
set in the netoptions startup script, which we would love to run for VNETs
as well [1].
While virtualising the log_in_vain sysctls seems pointles at first for as
long as the kernel message buffer is not virtualised, it at least allows
an administrator to debug the base system or an individual jail if needed
without turning the logging on for all jails running on a system.
PR: 243193 [1]
MFC after: 2 weeks
Move the decision to take an early exit from that function after adding
children based on FDT data into the #ifdef FDT block, so that it doesn't
offend coverity's notion of how the code should be written. (What's the
point of compilers optimizing away dead code if static analyzers won't
let you use the feature in conjuction with an #ifdef block?)
Reported by: coverity via vangyzen@
Add printf() wrapper to use CR/CRLF terminators depending on whether
stdio is mapped to a tty open in raw mode.
Try to use the wrapper everywhere.
For now we leave the custom DPRINTF/WPRINTF defined by device
models, but we may remove them in the future.
Reviewed by: grehan, jhb
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22657
has a non-NULL child bus stored in it, so the "none" value can't be zero
since that's a valid array index. Also, when adding all possible buses
because there is no specific per-bus config, there's no need to reset
sc->maxbus on each loop iteration, it can be set once after the loop.
As of r356514 LLVM's libunwind is used as the DWARF unwinder on all
supported CPU architectures, and GCC and its libraries will be removed
soon. Retire the build infrastructure for GCC's unwinder; from here
if there are any unwinder bugs (on any arch) the path forward is to fix
LLVM's libunwind.
LLVM's libunwind is used for all archs, as of r356514. As GCC 4.2.1
will soon be removed, and with it the GNU unwinder, start simplifying
the prereq/startup lib logic in Makefile.inc1. From here if there are
any unwinder bugs (on any arch) the path foward is to fix LLVM's
libunwind.
Only sparc64 did not enable LLVM_LIBUNWIND. After r356513 LLVM_LIBUNWIND
should at least build on sparc64. The old DWARF unwinder will be removed
along with GCC 4.2.1 in the near future, so switch sparc64 to use LLVM's
unwinder in advance of the removal. Someone with access to the obsolete
sparc64 hardware supported by FreeBSD will have to test, and investigate
any failures. I will gladly help, but I don't have any suitable hardware
myself.
PR: 233405
sparc64 is the only architecture currently using the DWARF unwinder from
GCC 4.2.1. Old GCC and related libraries are being removed soon; absent
other changes sparc64 would be left with no unwinder when that happens.
Instead, commit these changes which should at least allow the LLVM
unwinder to build. Someone with access to the obolete sparc64 hardware
supported by FreeBSD will need to test the result.
PR: 233405
Submitted by: cem
Linux expects to be able to use posix_fallocate(2) on a memfd. Other places
would use this with shm_open(2) to act as a smarter ftruncate(2).
Test has been added to go along with this.
Reviewed by: kib (earlier version)
Differential Revision: https://reviews.freebsd.org/D23042
This opens the door for other descriptor types to implement
posix_fallocate(2) as needed.
Reviewed by: kib, bcr (manpages)
Differential Revision: https://reviews.freebsd.org/D23042
This prevents use-after-free races with crypto requests (which may
sleep) and CIOCFSESSION as well as races from current CIOCFSESSION
requests.
admbugs: 949
Reported by: Yuval Kanarenstein <yuvalk@ssd-disclosure.com>
Reviewed by: cem
MFC after: 1 week
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D23077
bsd.cpu.mk is included by bsd.init.mk before bsd.linker.mk, so it
was always setting the flag since LINKER_FEATURES wasn't defined.
Reported by: mhorne
Reviewed by: imp, mhorne
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D23076
binpath local was changed from char array to a char pointer, update
strlcpy/strlcat uses.
Reported by: Coverity through vangyzen
CID: 1412239 and 1412240
Reviewed by: emaste, imp, vangyzen
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D23090
- Enable clang and lld as system toolchains.
- Don't use external GCC for universe by default.
- Re-enable riscv64sf since it builds fine with clang + lld.
Reviewed by: emaste, mhorne
Relnotes: yes
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D23089
- Export the offset into the backing object, not the object size.
- Fix a bug where we would print the previous entry's "offset" when a
map_entry has no object.
- Try to identify shared mappings. Linux prints "s" when the mapping
"may be shared". This attempt is not perfect, for example, we print
"p" for anonymous memory that may be shared via
minherit(INHERIT_SHARE).
PR: 240992
Reviewed by: kib
MFC after: 1 week
MFC note: no OBJ_ANON in stable/12
Differential Revision: https://reviews.freebsd.org/D23062
This method is supposed to write the voltage into uvolt
and return an errno compatible value.
Reviewed by: mmel
Differential Revision: https://reviews.freebsd.org/D23006
The two switch regulator are always 3.0V.
Add a special case in get_voltage that if min=max we directly
return the value without calculating it.
Reviewed by: mmel
Differential Revision: https://reviews.freebsd.org/D23004
Don't wait until the vtnet_debugnet_init() call happens, because at that
point we might already have allocated something from
vtnet_tx_header_zone.
Some systems showed this panic:
vtnet0: link state changed to UP
panic: keg vtnet_tx_hdr initialization after use.
cpuid = 5
time = 1578427700
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe004db427f0
vpanic() at vpanic+0x17e/frame 0xfffffe004db42850
panic() at panic+0x43/frame 0xfffffe004db428b0
uma_zone_reserve() at uma_zone_reserve+0xf6/frame 0xfffffe004db428f0
vtnet_debugnet_init() at vtnet_debugnet_init+0x77/frame 0xfffffe004db42930
debugnet_any_ifnet_update() at debugnet_any_ifnet_update+0x42/frame 0xfffffe004db42980
do_link_state_change() at do_link_state_change+0x1b3/frame 0xfffffe004db429d0
taskqueue_run_locked() at taskqueue_run_locked+0x178/frame 0xfffffe004db42a30
taskqueue_run() at taskqueue_run+0x4d/frame 0xfffffe004db42a50
ithread_loop() at ithread_loop+0x1d6/frame 0xfffffe004db42ab0
fork_exit() at fork_exit+0x80/frame 0xfffffe004db42af0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe004db42af0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
KDB: enter: panic
[ thread pid 12 tid 100011 ]
Stopped at kdb_enter+0x37: movq $0,0x1084eb6(%rip)
db>
Reviewed by: cem, markj
Differential Revision: https://reviews.freebsd.org/D23073
lld on RISC-V is not yet able to handle undefined weak symbols for
non-PIC code in the code model (medany/medium) used by the RISC-V
kernel.
Both GCC and clang emit an auipc / addi pair of instructions to
generate an address relative to the current PC with a 31-bit offset.
Undefined weak symbols need to have an address of 0, but the kernel
runs with PC values much greater than 2^31, so there is no way to
construct a NULL pointer as a PC-relative value. The bfd linker
rewrites the instruction pair to use lui / addi with values of 0 to
force a NULL pointer address. (There are similar cases for 'ld'
becoming auipc / ld that bfd rewrites to lui / ld with an address of
0.)
To work around this, compile the kernel with -fPIE when using lld.
This does not make the kernel position-independent, but it does
force the compiler to indirect address lookups through GOT entries
(so auipc / ld against a GOT entry to fetch the address). This
adds extra memory indirections for global symbols, so should be
disabled once lld is finally fixed.
A few 'la' instructions in locore that depend on PC-relative
addressing to load physical addresses before paging is enabled have to
use auipc / addi and not indirect via GOT entries, so change those to
use 'lla' which always uses auipc / addi for both PIC and non-PIC.
Submitted by: jrtc27
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D23064
SSD capacity in laptops is growing faster then RAM size, so my original
guess seems too low on second thought. Hopefully nobody will build large
array of those crappy SSDs.
MFC after: 2 weeks
X-MFC-with: 356474
When bootstrapping on powerpc64 ELFv1, it is necessary to use binutils
ld.bfd from ports for the bootstrap, as this is the only modern linker for
ELFv1 host tools.
As binutils ld.bfd is rather strict in its handling of undefined symbols,
it is necessary to pull in Support/Atomic.cpp to avoid an undefined symbol.
Reviewed by: dim, emaste
Sponsored by: Tag1 Consulting, Inc.
Differential Revision: https://reviews.freebsd.org/D23072
