Privilege checks in both functions should allow the current process to
infer information about itself, as well as use the interfaces that are
proclaimed 'debugging', for instance, procctl(2).
Note that in p_cansee() case, explicit comparision of curproc and p
avoids a race where the process might change credentials and cause
thread to compare its cached stale credentials against updated process
creds, effectively disallowing the process to observe itself.
Reviewed by: emaste
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33986
For non-anonymous swap objects, there is always a reference from the
owner to the object to keep it from recycling. Account for it when
deciding should we query pmap for hardware active references for the
page.
As result, we avoid unneeded calls to pmap_ts_referenced(), which for
non-mapped page means avoiding unneccessary lock and unlock of the pv list.
Reviewed by: markj
Discussed with: alc
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D33924
An AHCI controller may be specified with no connected ports. Avoid
dumping core in this case for compatibility with existing VM configs.
Reviewed by: khng, jhb
Fixes: 621b509048 Refactor configuration management in bhyve.
MFC after: 1 week
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D33969
SystemCMOS address space is accessible for system wide.
So install address handler in \_SB space.
Reviewed by: jhb
Differential Revision: https://reviews.freebsd.org/D33892
atrtc(4) should always install a SystemCMOS address space handler unless
the RTC Not Present bit is not set in IAPC_BOOT_ARCH in the FADT.
The atrtc(4) driver already checks this bit, but _STA can return not-present
even when this bit is clear.
Reviewed by : jhb
Differential Revision: https://reviews.freebsd.org/D33891
X_ip_mrouter_done might sleep, which triggers INVARIANTS to
print additional errors on the screen.
Move it outside the lock, but provide some basic synchronization
to avoid race condition during module uninit/unload.
Obtained from: Semihalf
Sponsored by: Stormshield
As of f833ab9dd1 procctl(2) allows idtype P_PID with id = 0 as a
shortcut for the calling process ID. The shortcut also bypasses the
p_cansee / p_candebug test (since the process is able to act on itself.)
At present if the security.bsd.unprivileged_proc_debug sysctl is 0 then
procctl(P_PID, getpid(), ... for a process to act on itself will fail,
but procctl(P_PID, 0, ... will succeed. This should likely be addressed
with a kernel change.
In any case the id = 0 shortcut is a tiny optimization for a process to
act on itself and allows the self-procctl to succeed, so use it in ssh.
Reported by: Shawn Webb
Reviewed by: kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33970
Part two: Append bhyve -K option for specified keyboard layout
with layout setting files every languages.
Since the cmd option '-k' was used in the meantime
it was changed to '-K'
PR: 246121
Submitted by: koinec@yahoo.co.jp
Reviewed by: grehan@
Differential Revision: https://reviews.freebsd.org/D29473
MFC after: 4 weeks
- Add usr/lib32/libfoo.so.N for lib/libfoo.so.N.
- Add usr/lib32/foo for usr/lib/foo.
- Treat casper libraries special since they are installed to
/usr/lib32 instead of /usr/lib32/casper and thus map
usr/lib/casper/foo to usr/lib32/foo.
Note that OLD_DIRS and MOVED_LIBS entries are not duplicated, only
OLD_FILES and OLD_LIBS.
Reviewed by: imp, emaste
Sponsored by: The University of Cambridge, Google Inc.
Differential Revision: https://reviews.freebsd.org/D33324
This is a bit more unusual in that the modules dropped their major
version suffix at the same time, so the old files being removed by
MOVED_LIBS in this case are the symlinks to the old libraries.
Reviewed by: emaste
Sponsored by: The University of Cambridge, Google Inc.
Differential Revision: https://reviews.freebsd.org/D33849
Add a MOVED_LIBS variable similar to OLD_LIBS except that MOVED_LIBS
is used for the cases that a library's name doesn't change, but it
just moves between /usr/lib and /lib. This will be used by a future
change to auto-generate lib32 old files entries for which these cases
need to be ignored (a moved library remains in /usr/lib32).
Suggested by: emaste
Reviewed by: emaste
Sponsored by: The University of Cambridge, Google Inc.
Differential Revision: https://reviews.freebsd.org/D33848
- Be more explicit in the difference between OLD_DIRS and OLD_FILES
(the former is only in delete-old-libs whereas the latter is in
delete-old).
- Document that debug symbols in /usr/lib/debug/ for files in
OLD_FILES and OLD_LIBS are removed as well.
Reviewed by: emaste
Sponsored by: The University of Cambridge, Google Inc.
Differential Revision: https://reviews.freebsd.org/D33847
Otherwise we end up copying one uninitialized byte into the socket
buffer.
Reported by: KMSAN
Reviewed by: jhb
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33953
These routines are used internally by GEOM to dispatch I/O requests to a
provider, typically for tasting or for updating GEOM class metadata
blocks.
These routines assumed that partial I/O did not occur without setting
BIO_ERROR, but this is possible in at least two cases:
- Some or all of the I/O range is beyond the provider's mediasize.
In this scenario g_io_check() truncates the bounds of the request
before it is handed to the target provider.
- A read from vnode-backed md(4) device returns EOF (the backing vnode
is allowed to be smaller than the device itself) or partial vnode I/O
occurs.
In these scenarios g_read_data() could return a partially uninitialized
buffer. Many consumers are not affected by the first case, since the
offsets used for provider metadata or tasting are relative to the
provider's mediasize, but in some cases metadata is read at fixed
offsets, such as when searching for a UFS superblock using the offsets
defined by SBLOCKSEARCH.
Thus, modify the routines to explicitly check for a non-zero residual
and return EIO in that case. Remove a related check from the
DIOCGDELETE ioctl handler, it is handled within g_delete_data() now.
Reviewed by: mav, imp, kib
Reported by: KMSAN
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D31293
tc_counter_mask is an unsigned int and in the TSC timecounter is equal
to UINT_MAX, so the addition tc->tc_counter_mask + 1 can overflow to 0,
resulting in a hang during boot.
Fixes: c2705ceaeb ("x86: Speed up clock calibration")
Reviewed by: cperciva
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33956
The tests require SES hardware. Without it, the test cases will be
skipped.
Reviewed by: ken
Differential Revision: https://reviews.freebsd.org/D31809
Sponsored by: Axcient
MFC after: 2 weeks
* Prefer variables of small scope rather than large scope
* Remove a magic number
* style(9) for return statements
* Remove the get_enc_status method, which never did anything
* Fix a variable type in the handle_string method
* Proofread some comments
MFC after: 2 weeks
Sponsored by: Spectra Logic, Axcient
Reviewed by: ken, mav
Differential Revision: https://reviews.freebsd.org/D31686
The kern.elf64.aslr.pie_enable and kern.elf32.aslr.pie_enable sysctls
control the default setting for PIE binary address randomization, but
it is possible to enable or disable ASLR on a per-process basis. Use
procctl(2) to query whether ASLR is enabled.
(Note that with ASLR enabled but sysctl kern.elf64.aslr.pie_enable=0
a PIE binary will in effect have randomization disabled, and be
functional with msan. This is not intended as as a user-facing control
though. The user can use proccontrol(1) to disable aslr for the
process.)
Approved by: dim
Obtained from: LLVM 64de0064f315f57044294879d9ff4eacb454d45b
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33933
pthread_create() returns 0 on success or an error number on failure.
Reviewed by: khng, markj
Differential Revision: https://reviews.freebsd.org/D33930
vt_fini_logos() calls vtbuf_grow(), which reallocates the console
window's buffer using malloc(M_WAITOK). Because vt_fini_logos() is
called via a callout, we end up panicking if INVARIANTS is enabled.
Fix the problem simply by clearing the logos using a timed taskqueue.
taskqueue_thread is formally allowed to sleep; of course, if we actually
end up sleeping to satisfy the allocation, then we have bigger problems.
PR: 260896
Reviewed by: emaste
MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33932
The Branch Target Identification (BTI) Armv8-A extension adds new
instructions that can be placed where we may indirrectly branch to,
e.g. at the start of a function called via a function pointer. We can't
emulate these in DTrace as the kernel will have raised a different
exception before the DTrace handler has run.
Skip over the BTI instruction if it's used as the first instruction in
a function.
Sponsored by: The FreeBSD Foundation
When running the installer, in particular disextract (which is so far
the only part converted to bsddialog), on serial console or vt100 or
actually any terminal without color support, it failed to start.
This change makes bsddialog fallback on the black and white theme.
This is incorporated in newer version of bsddialog which will be
imported soon.
PR: 261272
Reported by: thj
Differential Revision: https://reviews.freebsd.org/D33920
Before this change bufdaemon and bufspacedaemon threads used
kthread_shutdown() to stop activity on system shutdown. The problem is
that kthread_shutdown() has no idea about the wait channel and lock used
by specific thread to wake them up reliably. As result, up to 9 threads
could consume up to 9 seconds to shutdown for no good reason.
This change introduces specific shutdown functions, knowing how to
properly wake up specific threads, reducing wait for those threads on
shutdown/reboot from average 4 seconds to effectively zero.
MFC after: 2 weeks
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D33936
This addresses the following boot message:
/etc/rc: WARNING: $zfskeys_enable is not set properly - see rc.conf(5).
Reported by: Mark Millard
Sponsored by: Modirum MDPay
Sponsored by: Klara Inc.
Fixes: bfb7a31b6a ("rc: Hook zfskeys to the build")
Fixes: 33ff39796f ("Add zfskeys rc.d script for auto-loading encryption keys")
These ciphers are now supported via OCF or 'struct enc_xform'.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33889
This is a synchronous software API which wraps the existing software
implementation shared with OCF. Note that this will not currently
use optimized backends (such as ossl(4)) but may be appropriate for
operations on small buffers.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D33524
by replaceing of spin_lock() call with spin_lock_irqsave()
This fixes following panic in drm-kmod:
panic: mi_switch: switch in a critical section
cpuid = 2
time = 1636939794
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b
vpanic() at vpanic+0x187
panic() at panic+0x43
mi_switch() at mi_switch+0x198
__mtx_lock_sleep() at __mtx_lock_sleep+0x1c9
__mtx_lock_flags() at __mtx_lock_flags+0xa2
linux_wake_up() at linux_wake_up+0x38
__active_retire() at __active_retire+0xb7
dma_fence_signal() at dma_fence_signal+0x100
dma_resv_add_shared_fence() at dma_resv_add_shared_fence+0x96
i915_gem_do_execbuffer() at i915_gem_do_execbuffer+0x11d0
i915_gem_execbuffer2_ioctl() at i915_gem_execbuffer2_ioctl+0x19a
drm_ioctl_kernel() at drm_ioctl_kernel+0x72
drm_ioctl() at drm_ioctl+0x2c4
linux_file_ioctl() at linux_file_ioctl+0x297
kern_ioctl() at kern_ioctl+0x1dc
sys_ioctl() at sys_ioctl+0x124
amd64_syscall() at amd64_syscall+0x124
fast_syscall_common() at fast_syscall_common+0xf8
--- syscall (54, FreeBSD ELF64, sys_ioctl)
MFC after: 1 week
Reviewed by: manu
Reported by: Graham Perrin <grahamperrin_AT_gmail_DOT_com>
PR: 261166
Differential Revision: https://reviews.freebsd.org/D33888
The only event hooked up is NOTE_ATTRIB, which is triggered when the
device is resized. Support for other NOTE_* events to follow.
Reviewed by: kib, jhb
Differential Revision: https://reviews.freebsd.org/D33402
