Resulting sbuf_len() from proc_getargv() might return 0 if user mangled
ps_strings enough. Also, sbuf_len() API contract is to return -1 if the
buffer overflowed. The later should not occur because get_ps_strings()
checks for catenated length, but check for this subtle detail explicitly
as well to be more resilent.
The end result is that p_comm is used in this situations.
Approved by: so
Security: FreeBSD-SA-22:09.elf
Reported by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: delphij, markj
admbugs: 988
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35391
Other arches like powerpc* needs it.
Fixes: d387a1b4b1 ("linuxkpi: io.h: Do not include asm/set_memory.h for armv6 and armv7")
Fixes: 789dbdbb48 ("linuxkpi: Add arch_io_{reserve,free}_memtype_wc")
Sponsored by: Beckhoff Automation GmbH & Co. KG
They do not have the same pmap api and this cannot work for those arch.
Fixes: 789dbdbb48 ("linuxkpi: Add arch_io_{reserve,free}_memtype_wc")
Sponsored by: Beckhoff Automation GmbH & Co. KG
By calling the function too early we might still have the td_pflags
value cached from the previous struct thread use. cpu_copy_thread()
depends on correct value for TDP_KTHREAD at least on x86.
Reported, bisected, and tested by: pho
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D36069
Linux does the same.
Reviewed by: bz, emaste, hselasky
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D36023
out* arguments are different on Linux and the i915 driver uses them.
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D35942
Make most AST handlers dynamically registered. This allows to have
subsystem-specific handler source located in the subsystem files,
instead of making subr_trap.c aware of it. For instance, signal
delivery code on return to userspace is now moved to kern_sig.c.
Also, it allows to have some handlers designated as the cleanup (kclear)
type, which are called both at AST and on thread/process exit. For
instance, ast(), exit1(), and NFS server no longer need to be aware
about UFS softdep processing.
The dynamic registration also allows third-party modules to register AST
handlers if needed. There is one caveat with loadable modules: the
code does not make any effort to ensure that the module is not unloaded
before all threads processed through AST handler in it. In fact, this
is already present behavior for hwpmc.ko and ufs.ko. I do not think it
is worth the efforts and the runtime overhead to try to fix it.
Reviewed by: markj
Tested by: emaste (arm64), pho
Discussed with: jhb
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D35888
Add the missing implementation of linuxkpi_cfg80211_bss_flush().
without this we get unresolved symbols and drivers won't load.
Reported by: eduardo, Berislav Purgar (bpurgar gmail.com)
MFC after: 3 days
X-MFC-Squash: b0f7376822
While working on new and updates to drivers more structs, fields,
functions, .. were found, had to be shuffled around, ..
Some of these are (so far still dummy) functions or not properly
typed fields. The IEEE80211_HE_ constants are all still dummy.
This was msotly as a start to make new (out-of-tree) things compile.
Sponsored by: The FreeBSD Foundation (minor VHT/chan width bits)
MFC after: 1 week
While working on new and updates to drivers more skbuff changes
came up. Sort out the list/prev/next header problem and add more
(so far dummy) functions needed.
MFC after: 1 week
Upgrade the argument of (*bss_info_changed) mac80211 ops function call
from 32 to 64 bit.
Add an extra argument to ieee80211_beacon_get_template().
Both changes are needed in order to keep other out-of-tree drivers in
synch and to move forward.
The driver changes were extracted from Linux wireless-testing
7b7090b4c6a906cc7c3e2a460335f705b93f4506 and
6e8912a503759bb8f1f01c5b761d0d45815fa6de.
Sponsored by: The FreBSD Foundation
MFC after: 1 week
With clang 15, the following -Werror warning is produced:
sys/compat/linux/linux_util.c:243:23: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
linux_get_char_devices()
^
void
This is because linux_get_char_devices() is declared with a (void)
argument list, but defined with an empty argument list. Make the
definition match the declaration.
MFC after: 3 days
It used to be mapped at the top of the UVA.
If the randomization is enabled any address above .data section will be
randomly chosen and a guard page will be inserted in the shared page
default location.
The shared page is now mapped in exec_map_stack, instead of
exec_new_vmspace. The latter function is called before image activator
has a chance to parse ASLR related flags.
The KERN_PROC_VM_LAYOUT sysctl was extended to provide shared page
address.
The feature is enabled by default for 64 bit applications on all
architectures.
It can be toggled kern.elf64.aslr.shared_page sysctl.
Approved by: mw(mentor)
Sponsored by: Stormshield
Obtained from: Semihalf
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D35349
Store the shared page address in struct vmspace.
Also instead of storing absolute addresses of various shared page
segments save their offsets with respect to the shared page address.
This will be more useful when the shared page address is randomized.
Approved by: mw(mentor)
Sponsored by: Stormshield
Obtained from: Semihalf
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D35393
This is in preparation for removal of OBJT_DEFAULT. In particular, it
is now cheap to check whether an OBJT_SWAP object has any swap blocks
allocated, so the benefit of having a separate OBJT_DEFAULT type is
quite marginal, and the OBJT_DEFAULT->SWAP transition is a source of
bugs.
Reviewed by: alc, hselasky, kib
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D35779
typecheck macro check if the type of a variable matches a type.
MFC after: 1 week
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D35569
iwlwifi allocates queues on first wakeup. This takes a lot longer on
FreeBSD's work implementation that it seems to on Linux based on some
discussion. That meant that we couldn't get non-data frames out quickly
enough initially and failed to associate.
d0d2911035 should have solved most of this
for us with iwlwifi. None of the other drivers ported to LinuxKPI/802.11
up to today will call a dequeue so we get notified when the queus are
allocated or even need to do so.
Remove the bandaid initilly put in for iwlwifi now and speed up the
overall process of getting us associated.
MFC after: 3 days
