Put large functions into linux_slab.c instead of declaring them static
inline.
Add support for more memory allocation wrappers like kmalloc_array()
and __vmalloc().
Make sure either the M_WAITOK or the M_NOWAIT flag is set and mask
away unused memory allocation flags before calling FreeBSD's malloc()
routine.
Move kmalloc_node() definition to slab.h where it belongs.
Implement support for the SLAB_DESTROY_BY_RCU feature when creating a
kmem_cache which basically means kmem_cache memory is freed using
call_rcu().
MFC after: 1 week
Sponsored by: Mellanox Technologies
It relies on output from inetd that is triggered by MK_TCP_WRAPPERS=yes.
We need to check for both knobs being set -- otherwise the script doesn't
have much value.
PR: 217577
Submitted by: Sergey <kpect@protonmail.com> (MK_TCP_WRAPPERS piece)
MFC after: 1 week
Sponsored by: Dell EMC Isilon
- Use OBJTOP/SRCTOP-relative paths when looking for include files and
strfile.
- Add FORTUNES_OBJ and FORTUNES_SRC to abbreviate usr.bin/fortune
pathing.
This is being done to simplify make output/idioms.
MFC after: 1 week
Reviewed by: bdrewery
Sponsored by: Dell EMC Isilon
Differential Revision: D9916
r314828(loader.efi: fix an off-by-one bug in efi_verify_staging_size())
doesn't really fix the bug and this patch adds the missing part.
It's a shame that I didn't make everything correct at the very beginning...
MFC after: 2 weeks
Sponsored by: Microsoft
from the .depend files after the build:
cp -r ../vendor/edk2/MdePkg/Include sys/contrib/edk2
cd lib/libefivar
make
pushd `make -V .OBJDIR`
cat .depend*.o | grep sys/contrib | cut -d' ' -f 3 |
sort -u | sed -e 's=/full/path/sys/contrib/edk2/==' > /tmp/xxx
popd
cd ../../sys/contrib/edk2
rm -rf Include
for i in `cat /tmp/xxx`; do
svn cp svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/$i $i
done
svn cp svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/MdePkg.dec .
The original EDK2 repo is ~265MB, the MdePkg is ~23MB, all
MdePkg/Includes is ~7MB and this minimal set is ~1.3MB.
Sponsored by: Netflix
Some drives sometimes have errors for things like setting the number
of queue entries in the submission queue. The error paths taken for
these drives ensure a panic dereferencing uninialized data.
Sponsored by: Netflix
as kernel drivers and their dependency onto mmc(4); this allows for
incrementing the mmc(4) module version but also for entire omission
of these bridge declarations for mmccam(4) in a single place, i. e.
in dev/mmc/bridge.h.
The exit status will be 124, as the timeout(1) utility uses.
Reviewed by: jilles
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D9697
===
From Nathan Whitehorn:
Open Firmware runs in virtual mode on the Powermac G5. This runs inside the
kernel page table, which preserves all address translations made by OF before
the kernel starts; as a result, the kernel address space is a strict superset of
OF's.
Where this explodes is if OF uses an unmapped SLB entry. The SLB fault handler
runs in real mode and refers to the PCPU pointer in SPRG0, which blows up the
kernel. Having a value of SPRG0 that works for the kernel is less fatal than
preserving OF's value in this case.
===
The result of this is seemingly random panics from NULL dereferences, or hangs
immediately upon boot. By not restoring SPRG0 for Open Firmware entry the
kernel PCPU pointer is preserved and SLB faults are successful, resulting in a
stable kernel.
PR: 205458
Reported by: several (over bugzilla, lists, IRC)
Reviewed by: andreast
Tested by: many (various forms)
MFC after: 2 weeks
Fix assumptions about name spaces in NVME driver. First, it assumes
cdata.nn is the number of configured devices. However, it is the
number of supported name spaces. Second, it assumes that there will
never be more than 16 name spaces supported, but a certain drive I'm
testing reports 1024. It assumes that name spaces are a tightly packed
namespace, but the standard seems to indicate otherwise. Finally, it
assumes that an error would be generated when quearying an
unconfigured namespace. Instead, it succeeds but the identify data is
all zeros.
Fix these by limiting the number of name spaces we probe to 16. Remove
aborting when we find one in error. When the size of the name space is
zero, ignore it.
This is admittedly a bandaide. The long term fix will be to
participate in the enumeration and name space change protocols
definfed in the NVNe standard.
Sponsored by: Netflix
hash 7babb4372e6a34cbbc54249b25056272a5a9924c From 2017-Mar-03.
EDK2 is Intel's BSD Licensed UEFI implementation. We'll be bringing in
various routines from there rather than reimplementing them from
scratch for libefivar and the EFI boot loader.
The upstream repo has ^M ending on everything (sometimes multiple
times!), so the following script was run prior to import so changes we
have to do don't first include changing every line:
% find . -type f | xargs -n 1 sed -I.BAK -e `printf "s/\r//g"`
% find . -name \*.BAK | xargs rm
Also, only the MdePkg was brought in (it's 17MB, while the entire repo
is 250MB). It's almost completely certain nothing else will be used,
but if it is, it can be brough in along side MdePkg in the future.
Obtained from: https://github.com/tianocore/edk2.git
LinuxKPI. When the type of the argument is constant the temporary
variable cannot be assigned after the barrier. Instead assign the
temporary variable by initialization.
MFC after: 1 week
Sponsored by: Mellanox Technologies
While here plug a memory leak upon error and postpose a multiplication
until after reallocation has succeded.
Hinted partially by: OpenBSD
Reviewed by: gad
MFC after: 2 weeks
The latter set of manpages directly consume bsd.man.mk, so the bsd.man.mk
behavior should be the source of truth for underlying behavior, whereas
the other manpage fragment descriptions should document how they tweak
the variable behavior, if at all (bsd.prog.mk does tweak the default
value, as noted in its description)
MFC after: 1 week
Sponsored by: Dell EMC Isilon
For now it allows to unload CTL kernel module if there are no target-capable
SIMs in CAM. As next step full teardown of CAM targets can be implemented.
related struct definitions out into the MI path.
Invert the native ipc structs to the Linux ipc structs convesion logic.
Since 64-bit variant of ipc structs has more precision convert native ipc
structs to the 64-bit Linux ipc structs and then truncate 64-bit values
into the non 64-bit if needed. Unlike Linux, return EOVERFLOW if the
values do not fit.
Fix SYSV IPC for 64-bit Linuxulator which never sets IPC_64 bit.
MFC after: 1 month
This change tries to fix the most obvious locking problems.
sbp_cam_scan_lun() is never called with the sbp lock held, so the lock
needs to be acquired internally (if it's needed at all).
Without this change a kernel with INVARIANTS panics when a firewire disk
is connected:
panic: mutex sbp not owned at /usr/src/sys/dev/firewire/sbp.c:967
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff80420bbb = db_trace_self_wrapper+0x2b/frame 0xfffffe0504df0930
kdb_backtrace() at 0xffffffff80670359 = kdb_backtrace+0x39/frame 0xfffffe0504df09e0
vpanic() at 0xffffffff8063986c = vpanic+0x14c/frame 0xfffffe0504df0a20
panic() at 0xffffffff806395b3 = panic+0x43/frame 0xfffffe0504df0a80
__mtx_assert() at 0xffffffff8061c40d = __mtx_assert+0xed/frame 0xfffffe0504df0ac0
sbp_cam_scan_lun() at 0xffffffff80474667 = sbp_cam_scan_lun+0x37/frame 0xfffffe0504df0af0
xpt_done_process() at 0xffffffff802aacfa = xpt_done_process+0x2da/frame 0xfffffe0504df0b30
xpt_done_td() at 0xffffffff802ac2e5 = xpt_done_td+0xd5/frame 0xfffffe0504df0b80
fork_exit() at 0xffffffff805ff72f = fork_exit+0xdf/frame 0xfffffe0504df0bf0
fork_trampoline() at 0xffffffff8082483e = fork_trampoline+0xe/frame
0xfffffe0504df0bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---
Also, I tried to reduce the scope of the sbp lock to avoid holding it
while doing bus_dma allocations.
The code badly needs some re-engineering. SBP really should implement
a CAM transport, so that it avoids control flow inversion when re-scanning
the bus. Also, the sbp lock seems to be too coarse.
Additionally, the commit includes some changes not related to locking.
- sbp_cam_scan_lun: restore CAM_DEV_QFREEZE before re-queueing the ccb
because xpt_setup_ccb resets ccb_h.flags
- sbp_post_busreset: call xpt_release_simq only if it's actually frozen
- don't place private SIMQ_FREEZED flag (sic, "freezed") into sim->flags,
use sbp->flags for that
- some style fixes and control flow enhancements
Reviewed by: sbruno
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D9898
The module uses unnamed structure and union fields and base GCC in
stable/10 doesn't like it.
I think that that is a C11 feature, so it is courteous of more modern
compilers to not complain about it when compiling in C99 mode.
Approved by: davidcs
MFC after: 5 days
This avoids creating own per-CPU threads and also ensures the tasklet
execution happens on the same CPU core invoking the tasklet.
MFC after: 1 week
Sponsored by: Mellanox Technologies
Suppose a traced process is stopped in ptracestop() due to receipt of a
SIGSTOP signal, and is awaiting orders from the tracing process on how
to handle the signal. Before sending any such orders, the tracing
process exits. This should kill the traced process. But suppose a second
thread handles the SIGKILL and proceeds to exit1(), calling
thread_single(). The first thread will now awaken and will have a chance
to check once more if it should go to sleep due to the SIGSTOP. It must
not sleep after P_SINGLE_EXIT has been set; this would prevent the
SIGKILL from taking effect, leaving a stopped orphan behind after the
tracing process dies.
Also add new tests for this condition.
Reviewed by: kib
MFC after: 2 weeks
Sponsored by: Dell EMC
Differential Revision: https://reviews.freebsd.org/D9890
interpreter exactly matches the one requested by the activated image.
This change applies r295277, which did the same for note branding, to
the old brand selection, with the same reasoning of fixing compat32
interpreter substitution.
PR: 211837
Reported by: kenji@kens.fm
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
elf_load_section.
The values passed currently as vm_offset_t are phdr.p_offset, which
have the native Elf word size. Since elf_load_section interprets them
as the file offset, use vm object offset type.
Noted and reviewed by: alc
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
This change makes the workqueue implementation behave more like in
Linux, both functionality wise and structure wise.
All workqueue code has been moved to linux_work.c
Add an atomic based statemachine to the work_struct to ensure proper
operation. Prior to this change struct_work was directly mapped to a
FreeBSD task. When a taskqueue has multiple threads the same task may
end up being executed on more than one worker thread simultaneously.
This might cause problems with code coming from Linux, which expects
serial behaviour, similar to Linux tasklets.
Move all global workqueue function names into the linux_xxx domain to
avoid symbol name clashes in the future.
Implement a few more workqueue related functions and macros.
Create two multithreaded taskqueues for the LinuxKPI during module
load, one for time-consuming callbacks and one for non-time consuming
callbacks.
MFC after: 1 week
Sponsored by: Mellanox Technologies
Currently netfront is setting the flags of inbound packets with the checksum
not present (offloaded) to (CSUM_IP_CHECKED | CSUM_IP_VALID | CSUM_DATA_VALID |
CSUM_PSEUDO_HDR). According to the mbuf(9) man page this is not the correct
combination of flags, it should instead be (CSUM_DATA_VALID |
CSUM_PSEUDO_HDR).
Reviewed by: Wei Liu <wei.liu2@citrix.com>
MFC after: 2 weeks
Sponsored by: Citrix Systems R&D
Differential revision: https://reviews.freebsd.org/D9831
