wdc_get_dui_log_size allocates a buffer and then advances the
returned pointer. Passing this advanced pointer to free() is UB,
so save the original pointer to pass to free() instead.
Reviewed by: imp
Reported by: GCC 12 -Wfree-nonheap-object
Differential Revision: https://reviews.freebsd.org/D36827
DevPathToTextUsbWWID allocates a separate copy of the SerialNumber
string to append a null terminator if the original string is not
null terminated. However, by using AllocateCopyPool, it tries to
copy 'Length + 1' words from the existing string containing 'Length'
characters into the target string. Split the copy out to only
copy 'Length' characters instead.
Reviewed by: imp, emaste
Reported by: GCC 12 -Wstringop-overread
Differential Revision: https://reviews.freebsd.org/D36826
The length passed to strncpy is the length of the source string, not
the destination buffer. This triggers a non-fatal warning in GCC 12.
Hoewver, the code is also odd. It is really just a memcpy of the
string without its nul terminator. For that use case, memcpy is
clearer.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D36824
When -B or -I are used, change() evaluates the lines in a hunk to
determine if it is a hunk that should be ignored. It does this by
reading each candidate line into a mallocated buffer via preadline()
and then calling ignoreline(). Previously the buffer was freed as a
side effect of ignoreline_pattern() called from ignoreline().
However, if only -B was specified, then ignoreline_pattern() was not
called and the lines were leaked. If both options were specified,
then ignoreline_pattern() was called before checking for a blank line
so that the second check was a use after free.
To fix, pull the free() out of ignoreline_pattern() and instead do it
up in change() so that is paired with preadline().
While here, simplify ignoreline() by checking for the -B and -I cases
individually without a separate clause for when both are set. Also,
do the cheaper check (-B) first, and remove a false comment (this
function is only called if at least one of -I or -B are specified).
Reviewed by: emaste
Reported by: GCC 12 -Wuse-after-free
Differential Revision: https://reviews.freebsd.org/D36822
Use TAILQ_FOREACH_SAFE to walk to list of children mnemonics to free
them instead of TAILQ_FOREACH.
Reviewed by: emaste
Reported by: GCC 12 -Wuse-after-free
Differential Revision: https://reviews.freebsd.org/D36821
GCC 12 thinks ct_visual_string can reuse a pointer after it has been
reallocated, but in this case the warning appears false.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D36820
The _xrealloc() function prints pointer values for internal assertion
failures and in one case does so after it has freed the pointer.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D36819
The debug traces for reference counting in ZFS use the pointer of the
owning object as a "tag" for references to check that when an object
drops a reference it had actually held one. In a couple of places ZFS
drops references after freeing the owning object. In userland GCC
realizes this is a use after free. However, since only the value of
the pointer is used, and it isn't indirected, the use is harmless.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D36818
NLM 4 status values are a superset of the older NLM protocol so these
casts are safe while pacifying -Wenum-conversion warnings from GCC.
Reviewed by: rmacklem
Differential Revision: https://reviews.freebsd.org/D36816
The debug printf is intended to execute after the loop has ended to
log the selected file.
Reviewed by: imp, emaste
Reported by: GCC
Differential Revision: https://reviews.freebsd.org/D36815
libzfs depends on symbols defined in libzutil. For static linking
ld.bfd is less forgiving than lld, so rescue was failing to link when
using ld.bfd due to unresolved symbols from libzutil used by libzfs.
Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D36811
This could use -fmax-errors on GCC, but tweaking the error limit is
unusual in the tree anyway. Just remove it.
Reviewed by: erj, imp, emaste
Differential Revision: https://reviews.freebsd.org/D36808
The Adler32 digest consists of two 16-bit words whose values are
calculated modulo 65521 (largest prime < 2^16). To avoid two division
instructions per byte, this version copies an optimization found in
zlib which defers the modulus until close to the point that the
intermediate sums can overflow 2^32. (zlib uses NMAX == 5552 for
this, this version uses 5000)
The bug is that in the deferred modulus case, the modulus was
only applied to the high word (and twice at that) but not to
the low word. The fix is to apply it to both words.
Reviewed by: jhibbits
Reported by: Miod Vallat <miod@openbsd.org>
Differential Revision: https://reviews.freebsd.org/D36798
GCC warns about the mismatched sizes on i386 where vm_paddr_t is 64
bits.
Reviewed by: imp, markj
Differential Revision: https://reviews.freebsd.org/D36750
r325506 (3cf8254f1e) extended struct pkthdr to add packet timestamp in
mbuf(9) chain. For example, cxgbe(4) and mlx5en(4) support this feature.
Use the timestamp for bpf(4) if it is available.
Reviewed by: hselasky, kib, np
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36868
Ensure that an RFC3168 ECN reaction only occurs on non-SYN
segments.
Reviewed By: tuexen, #transport
Sponsored by: NetApp, Inc.
Differential Revision: https://reviews.freebsd.org/D36867
Flags should be M_WAITOK | M_ZERO instead of just M_ZERO
Reviewed by: markj
MFC after: 2 days
Sponsored by: Instituto de Pesquisas Eldorado (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D36865
Simple change to allow for the individual toggling of
RFC7323 window scaling and timestamp option.
Reviewed By: rrs, tuexen, glebius, guest-ccui, #transport
Sponsored by: NetApp, Inc.
Differential Revision: https://reviews.freebsd.org/D36863
This presents the existing information in a slightly more readable way.
Reviewed by: jrtc27, markj, jhb
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36565
Only i386 and amd64 print the decoded syscall name in the backtrace.
This de-duplication facilitates further changes and adoption by other
platforms.
Reviewed by: jrtc27, markj, jhb
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36565
Whilst febca0e643 added -N for both build and extract, it only fully
worked for extract; build would perform the actual tree build with
-DNO_ROOT and construct the intended METALOG, but the subsequent tarball
creation did not take this into account and just tarred up the the
directory as-is rather than using the METALOG. This resulted in the
permissions and ownership not being correct, as well as there being a
stray METALOG file in the tarball's root.
Reported by: avg
Reviewed by: avg, jhb, imp
Tested by: avg
Fixes: febca0e643 ("etcupdate: Add a -N flag to perform a NO_ROOT build")
Differential Revision: https://reviews.freebsd.org/D36845
Currently the installer is only started on the primary ("high level")
console. For systems where this is the video console and serial consoles
aren't of interest, and headless systems with just a serial console,
this works just fine, but for systems where both video and serial
consoles are present and meaningful this requires the user to select the
right primary console in loader, with the poor user experience of the
system appearing to hang if they leave the wrong one selected. This
notably differs from our multi-user behaviour of spawning getty on every
console, where the only issue with selecting the wrong primary console
is a quieter boot process until the login prompt appears (or the system
crashes).
Instead, use the newly-added runconsoles helper to run the installer on
every console (except for ttyv*, where only ttyv0 will be used). For
interactive installations, any of the consoles can be used, though only
one should be used at a time as no effort is made to avoid multiple
installations running at the same time clobbering each other. If the
Live CD option is selected, the other installers (which should, if the
user is well-behaved, be sitting at the welcome screen) will be killed.
If an automated install is in use, the primary console will be used to
display its output, and the others will direct the user to the primary
console.
Reviewed by: brooks, gjb
Differential Revision: https://reviews.freebsd.org/D36805
This separates out the install media-specific environment (creating
bsdinstall_etc) from actually running the installer on a given console.
This will be used by a future change to start the installer on multiple
consoles.
Reviewed by: brooks, gjb
Differential Revision: https://reviews.freebsd.org/D36803
This helper binary will run a given command on every on console, as
defined by /etc/ttys (except for ttyv*, where only ttyv0 will be used).
If one of the command processes exits, the rest will be killed. This
will be used by a future change to start the installer on multiple
consoles.
Reviewed by: brooks, imp, gjb
Differential Revision: https://reviews.freebsd.org/D36804
The cons25w line was added in c991a64747 for pc98, along with reading
MACHINE in order to determine what terminal type to use for VTYs. Commit
2b375b4edd removed this condition, leaving it as always using xterm
for VTYs, but left behind the now-unused MACHINE variable and the
cons25w list entry. Clean these up to be how they were before pc98
support was added.
Note that anyone who really needs a cons25w terminal can still request
it, it's just not listed as a common option.
Reviewed by: imp, brooks
Differential Revision: https://reviews.freebsd.org/D36587
In non-periodic mode absolute timers fire at exactly the time given.
When specifying a fast clock, align the firing time so that less
timer interrupt events are needed.
Reviewed by: rrs @
Differential Revision: https://reviews.freebsd.org/D36858
MFC after: 1 week
Sponsored by: NVIDIA Networking
When doing small reads and writes use an intermediate buffer to store the
data to save locking the remote process to access data.
Reviewed by: imp @
Differential Revision: https://reviews.freebsd.org/D36633
MFC after: 1 week
Sponsored by: NVIDIA Networking
Only consider segments with the SYN bit set and the ACK bit cleared
as "new connection attempts", which result in re-using a connection
being in TIMEWAIT state. This results in consistent handling of
SYN-ACK segments.
Reviewed by: rscheff@
MFC after: 1 week
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D36864
Further updates based on ways Peter Holm found to corrupt UFS
superblocks in ways that could cause kernel hangs or crashes.
No legitimate superblocks should fail as a result of these changes.
Reported by: Peter Holm
Tested by: Peter Holm
Sponsored by: The FreeBSD Foundation
Add local functions to workaround an instruction segment trap (panic)
when the indirect functions copyin and copyout are called by an external
loadable kernel module (i.e. pfsync, zfs and linuxulator). The crash
was triggered by change 47a57144af, but
kernel binary linked with LLD 9 works fine. LLVM bisect points that LLD
behavior chaged after dc06b0bc9ad055d06535462d91bfc2a744b2f589.
This is know to affect powerpc targets only and the final fix is still
being discussed with the LLVM community.
PR: 266730
Reviewed by: luporl, jhibbits (on IRC, previous version)
MFC after: 2 days
Sponsored by: Instituto de Pesquisas Eldorado (eldorado.org.br)
Differential Revision: https://reviews.freebsd.org/D36234
When the node to insert in the rb_tree is known to precede or follow a
particular node, new methods RB_INSERT_PREV and RB_INSERT_NEXT,
defined here, allow the search for where to insert the new node begin
with that particular node, rather than at the root, to save a bit of
time.
Using those methods, instead of RB_INSERT, in managing a tree in
iommu_gas.c, saves a little time.
Reviewed by: kib
MFC after: 3 weeks
Differential Revision: https://reviews.freebsd.org/D35516
Describe a shell trick to do non-blocking modification of the terminal
settings, by ignoring job control signals with trap built-in.
PR: 266627
With input from: jilles
Reviewed by: pauamma
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D36745
