tb [Thu, 21 Dec 2023 21:23:37 +0000 (21:23 +0000)]
Mark some API-to-be-removed as intentionally undocumented
tb [Thu, 21 Dec 2023 20:50:43 +0000 (20:50 +0000)]
Remove some superfluous parentheses
miod [Thu, 21 Dec 2023 19:40:47 +0000 (19:40 +0000)]
New TEMPerGold sensor; reported by Mikolaj Kucharski on bugs@
miod [Thu, 21 Dec 2023 19:34:07 +0000 (19:34 +0000)]
Remove logic and comments related to INDIR now that they aren't supported
anymore.
ok tb@ deraadt@, no need to regen anything
martijn [Thu, 21 Dec 2023 13:54:05 +0000 (13:54 +0000)]
mib_init() and MIB() disappeared with mib.c, remove their declarations.
MIBDECL() and MIBEND are only used inside mib.h, so move their definition
in there.
OK tb@
martijn [Thu, 21 Dec 2023 12:43:30 +0000 (12:43 +0000)]
Clean up snmpd's header situation.
With the help of tb@ and include-what-you-use.
OK tb@
jca [Thu, 21 Dec 2023 11:25:38 +0000 (11:25 +0000)]
Tweak comment, the actual format is "ucom<unit#>:<usb id>"
ok krw@
otto [Thu, 21 Dec 2023 08:01:21 +0000 (08:01 +0000)]
Fix a few unchecked allocations; ok millert@ miod@
jsg [Thu, 21 Dec 2023 03:49:28 +0000 (03:49 +0000)]
drm/i915: Fix remapped stride with CCS on ADL+
From Ville Syrjala
7b0faa541f15af170607e565ceca1ae44e6daa35 in linux-6.1.y/6.1.69
0ccd963fe555451b1f84e6d14d2b3ef03dd5c947 in mainline linux
jsg [Thu, 21 Dec 2023 03:47:04 +0000 (03:47 +0000)]
drm/amd/display: Disable PSR-SU on Parade 0803 TCON again
From Mario Limonciello
20907717918f0487258424631b704c7248a72da2 in linux-6.1.y/6.1.69
e7ab758741672acb21c5d841a9f0309d30e48a06 in mainline linux
jsg [Thu, 21 Dec 2023 03:45:45 +0000 (03:45 +0000)]
drm/amdgpu: fix tear down order in amdgpu_vm_pt_free
From Christian Koenig
a9e2de19433fe0b63c080e910cce9954745cd903 in linux-6.1.y/6.1.69
ceb9a321e7639700844aa3bf234a4e0884f13b77 in mainline linux
jsg [Thu, 21 Dec 2023 03:43:28 +0000 (03:43 +0000)]
drm/amdgpu/sdma5.2: add begin/end_use ring callbacks
From Alex Deucher
78b2ba39beef21c8baebb1868569c2026ad76de0 in linux-6.1.y/6.1.69
ab4750332dbe535243def5dcebc24ca00c1f98ac in mainline linux
jsg [Thu, 21 Dec 2023 03:09:08 +0000 (03:09 +0000)]
use strnstr paths in amdgpu
jsg [Thu, 21 Dec 2023 02:57:14 +0000 (02:57 +0000)]
add strnstr(9) string search within character limit
From Mike Barcroft in FreeBSD. Added to FreeBSD in 2001, Linux in 2010.
Used in amdgpu.
ok deraadt@
jca [Thu, 21 Dec 2023 01:20:54 +0000 (01:20 +0000)]
Print the proper file name in case we fail to allocate a "path" extended header
Use name, not ln_name. Pasto introduced in previous.
tb [Wed, 20 Dec 2023 18:38:19 +0000 (18:38 +0000)]
Clean up includes in cms_pwri.c
florian [Wed, 20 Dec 2023 17:29:01 +0000 (17:29 +0000)]
update to nsd 4.8.0
OK sthen
otto [Wed, 20 Dec 2023 15:36:36 +0000 (15:36 +0000)]
introduce log_ntp_addr() and use it where applicable, avoids a null
pointer deref in constraint.c reported by bluhm@; ok millert@
deraadt [Wed, 20 Dec 2023 14:54:29 +0000 (14:54 +0000)]
create a stub for pinsyscalls(2)
deraadt [Wed, 20 Dec 2023 14:52:07 +0000 (14:52 +0000)]
there is a super-alignment between btext and text, this creates a hole.
Twice, I have seen the sigtramp mapping land inside that hole. This
causes grief for the upcoming pinsyscalls() work which operates on
address space ranges. But the micro-optimization is silly.
ok kettenis
deraadt [Wed, 20 Dec 2023 14:50:08 +0000 (14:50 +0000)]
For strange reasons which made sense at the time, the text segment was
placed head of the btext (boot.text) segment. (the boot.text segment is
"unmapped" after initization, as a self-protection mechanism). this meant
the LOAD's virtual addresses were not in sequence, which clearly isn't
what we intended.
tb [Wed, 20 Dec 2023 14:26:47 +0000 (14:26 +0000)]
Use BIO_indent() for indentation in tasn_prn.c
Using a loop to print pieces of a static buffer containing 20 spaces to
indent things is just silly. Even sillier is making this buffer const
without looking what it's actually used for... There is BIO_indent() or
BIO_printf() that can handle "%*s".
Add a length check to preserve behavior since BIO_indent() succeeds for
negattive indent.
However, peak silliness must be how BIO_dump_indent_cb() indents things.
That's for another day.
ok jsing
tb [Wed, 20 Dec 2023 14:15:19 +0000 (14:15 +0000)]
Rename impl into engine
tb [Wed, 20 Dec 2023 14:14:39 +0000 (14:14 +0000)]
Rename inl to in_len throughout the file
tb [Wed, 20 Dec 2023 14:13:07 +0000 (14:13 +0000)]
Rename outl into out_len throughout the file
tb [Wed, 20 Dec 2023 14:11:41 +0000 (14:11 +0000)]
Tweak a comment a bit
tb [Wed, 20 Dec 2023 14:10:03 +0000 (14:10 +0000)]
Remove block_mask from EVP_CIPHER_CTX
The block mask is only used in EVP_{De,En}cryptUpdate(). There's no need to
hang it off the EVP_CIPHER_CTX since it is easy to compute and validate.
ok joshua jsing
tb [Wed, 20 Dec 2023 14:05:58 +0000 (14:05 +0000)]
Add some sanity checks for EVP_CIPHER_meth_new()
Ensure that the nid and key length are non-negative and that the block
size is one of the three sizes 1, 8, or 16 supported by the EVP subsystem.
ok joshua jsing
dv [Wed, 20 Dec 2023 14:00:17 +0000 (14:00 +0000)]
btrace: add support for hex and octal values.
Changes number tokenizing and parsing to support hex & octal values.
Does not address other lexer issues (e.g. $0x1) to close gaps with
bpftrace.
OK claudio@
tb [Wed, 20 Dec 2023 13:52:17 +0000 (13:52 +0000)]
Merge p_open and p_seal into p_legacy
discussed with jsing
tb [Wed, 20 Dec 2023 13:46:05 +0000 (13:46 +0000)]
Fold p_dec.c and p_enc.c into a new p_legacy.c
discussed with jsing
krw [Wed, 20 Dec 2023 13:37:25 +0000 (13:37 +0000)]
Don't create an sd(4) larger than what the namespace will allow.
A namespace must satisfy
size (nsze) >= capacity (ncap) >= utilization (nuse)
Use ncap for the sd(4) size when THINP is set and ncap < nsze.
Tweak some variable names in passing to make code clearer.
ok dlg@
tb [Wed, 20 Dec 2023 13:34:47 +0000 (13:34 +0000)]
Less confusing variable names in EVP_PKEY_{de,en}crypt_old()
ok jsing
sthen [Wed, 20 Dec 2023 13:30:51 +0000 (13:30 +0000)]
MODPY_PYBUILD: use "bootstrap" instead of "Yes"
tb [Wed, 20 Dec 2023 11:33:52 +0000 (11:33 +0000)]
Improve local variable names
Rename the slightly awkward buf_offset into partial_len and rename
buf_avail into partial_needed to match.
suggested by jsing
tb [Wed, 20 Dec 2023 11:31:17 +0000 (11:31 +0000)]
Rename buf_len into partial_len in EVP_CIPHER_CTX
suggested by jsing
tb [Wed, 20 Dec 2023 11:01:34 +0000 (11:01 +0000)]
Clean up EVP_DecryptFinal_ex()
Rework the code to use the usual variable names, return early if we
have block size 1 and unindent the remainder of the code for block
sizes 8 and 16. Rework the padding check to be less acrobatic and
copy the remainder of the plain text into out using memcpy() rather
than a for loop.
input/ok jsing
tb [Wed, 20 Dec 2023 10:42:43 +0000 (10:42 +0000)]
Clean up EVP_EncryptFinal_ex()
This switches to the variable names used in other functions, adds a
reminder to add a missing length check and uses memset for the padding.
ok jsing
tb [Wed, 20 Dec 2023 10:35:25 +0000 (10:35 +0000)]
Simplify EVP_DecryptUpdate() a bit
This time the block size is called b and there's some awful length
fiddling with fix_len, which until recently also served as store
for the return value for do_cipher()...
If we land on a block boundary, we keep the last block decrypted and
don't count it as part of the output. So in the next call we need to
feed it back in. Feeding it back in counts as output written this time
around, so instead of remembering that we need to adjust outl, keep a
tally of the bytes written. This way we can also do some overflow and
underflow checking.
ok jsing
tb [Wed, 20 Dec 2023 10:15:30 +0000 (10:15 +0000)]
Remove commented out version of EVP_SealUpdate()
tb [Wed, 20 Dec 2023 10:14:14 +0000 (10:14 +0000)]
Remove preprocessor mess in EVP_PKEY_{de,en}crypt_old()
This was done the worst possible way. It would be much simpler to invert
the logic and use a single #ifdef. jsing prefers keeping the current
logic and suggested we ditch the preprocessor mess altogether.
ok jsing, claudio agreed with the initial diff
jan [Wed, 20 Dec 2023 09:51:06 +0000 (09:51 +0000)]
vio(4): checksum offloading for TCP/UDP in IPv6 Packets
ok sf@
stsp [Wed, 20 Dec 2023 07:33:32 +0000 (07:33 +0000)]
Remove iwx_wait_tx_queues_empty(); unused with current firmware versions
Current firmware supplies a flush-command response which makes it
unnecessary to poll for empty queues after sending the flush command.
Based on a patch by Mikhail Pchelin
stsp [Wed, 20 Dec 2023 07:32:05 +0000 (07:32 +0000)]
Ensure that iwm/iwx devices announce VHT capabilities in probe requests.
The previous code did not update the per-band-data length field,
resulting in firmware skipping the VHT information element in the
probe-request frame template.
Patch by Mikhail Pchelin
tb [Wed, 20 Dec 2023 06:30:04 +0000 (06:30 +0000)]
Remove a changelog from 1991
tb [Wed, 20 Dec 2023 06:28:04 +0000 (06:28 +0000)]
DES_random_key() sets the key
There's no need to have 60 lines of license for 4 lines of actual code.
Move DES_random_key() to set_key.c.
tb [Wed, 20 Dec 2023 06:22:27 +0000 (06:22 +0000)]
Remove commented-out code
dv [Wed, 20 Dec 2023 01:38:46 +0000 (01:38 +0000)]
btrace: "too long line" -> "line too long"
ok claudio@
tobhe [Wed, 20 Dec 2023 00:34:13 +0000 (00:34 +0000)]
Don't unset the SA tag set by ipsec_sa_tag in ipsec_sa_iface.
Fixes SA tagging and a possible leak.
from markus@
jsg [Wed, 20 Dec 2023 00:06:25 +0000 (00:06 +0000)]
spelling; ok markus@
bluhm [Tue, 19 Dec 2023 21:34:22 +0000 (21:34 +0000)]
Release inpcb mutex while calling sbwait().
As sbwait() may sleep, holding any mutex is not allowed. Call
pru_unlock() before sbwait() in soreceive().
Bug spotted by sashan@; OK sashan@ mvs@
mvs [Tue, 19 Dec 2023 20:34:10 +0000 (20:34 +0000)]
Initialize `sc_outputtask' before interface attachment. if_alloc_sadl()
has sleep point, so the uninitialized `sc_outputtask` could be accessed
through ioctl(2) interface.
ok sashan bluhm
deraadt [Tue, 19 Dec 2023 19:39:52 +0000 (19:39 +0000)]
static binary setting a table, or dynamic binary trying to do what
ld.so already did, will both be EPERM
deraadt [Tue, 19 Dec 2023 16:31:50 +0000 (16:31 +0000)]
include KTRFAC_PINSYSCALL in the ktrace options
deraadt [Tue, 19 Dec 2023 16:13:22 +0000 (16:13 +0000)]
whitespaces
deraadt [Tue, 19 Dec 2023 14:40:04 +0000 (14:40 +0000)]
add a malloc type for pinsyscall arrays
tb [Tue, 19 Dec 2023 13:50:19 +0000 (13:50 +0000)]
Move constraints files to the etc set
These are config files and once modified they should not be overwritten
if they have local changes.
ok deraadt job
claudio [Tue, 19 Dec 2023 10:32:20 +0000 (10:32 +0000)]
Show the RTR protocol version in the `bgpctl show rtr` output.
Knowing the version is essential to understand if ASPA PDUs are included
or not.
OK tb@
job [Tue, 19 Dec 2023 08:10:19 +0000 (08:10 +0000)]
Add markers
OK tb@
jmc [Tue, 19 Dec 2023 07:24:42 +0000 (07:24 +0000)]
- new sentence, new line
- zap an unused Pp
otto [Tue, 19 Dec 2023 06:59:28 +0000 (06:59 +0000)]
A small cleanup of malloc_bytes(), getting rid of a goto and a tiny
bit of optimization; ok tb@ asou@
deraadt [Tue, 19 Dec 2023 06:59:17 +0000 (06:59 +0000)]
sync
deraadt [Tue, 19 Dec 2023 06:58:36 +0000 (06:58 +0000)]
the 4th argument of pinsyscalls() is now "number of pin elements",
not "size of the storage of the pin elements"
jmc [Tue, 19 Dec 2023 06:57:34 +0000 (06:57 +0000)]
sort -C, and add to usage(); ok djm
deraadt [Tue, 19 Dec 2023 06:57:12 +0000 (06:57 +0000)]
pinsyscalls(2) has changed a little bit, and I can provide more advice
for how it is used (in ld.so, it's not like anyone else can call it).
Also document the errors..
djm [Tue, 19 Dec 2023 06:41:14 +0000 (06:41 +0000)]
correct section numbers; from Ed Maste
deraadt [Tue, 19 Dec 2023 06:27:45 +0000 (06:27 +0000)]
correct alignment placement
bluhm [Tue, 19 Dec 2023 01:11:21 +0000 (01:11 +0000)]
soreceive() must not hold mutex when calling sblock().
In my recent commit I missed that sblock() may sleep while soreceive()
holds the incpb mutex. Call pru_lock() after sblock().
Reported-by: syzbot+f79c896ec019553655a0@syzkaller.appspotmail.com
Reported-by: syzbot+08b6f1102e429b2d4f84@syzkaller.appspotmail.com
OK mvs@
job [Mon, 18 Dec 2023 23:42:20 +0000 (23:42 +0000)]
Rephrase some warnings related to Manifests
Feedback from Tom Harrison (APNIC)
with and OK tb@
tb [Mon, 18 Dec 2023 21:15:00 +0000 (21:15 +0000)]
cmac: use block_size rather than bl
This is purely mechanical apart from a single line wrap.
deraadt [Mon, 18 Dec 2023 17:19:07 +0000 (17:19 +0000)]
correct section the SYS_kbind syscall pin record goes into
noticed by gnezdo
martijn [Mon, 18 Dec 2023 16:58:26 +0000 (16:58 +0000)]
Add a family argument to host(). This allows us to force a specific address
family for source-address, which must be in line with the destination
address.
OK jca@
martijn [Mon, 18 Dec 2023 16:56:01 +0000 (16:56 +0000)]
Fix copy-paste error for setting source-address in trap receiver.
OK jca@
djm [Mon, 18 Dec 2023 15:58:56 +0000 (15:58 +0000)]
match flag type (s/int/u_int)
djm [Mon, 18 Dec 2023 14:50:08 +0000 (14:50 +0000)]
regress test for agent PKCS#11-backed certificates
djm [Mon, 18 Dec 2023 14:49:39 +0000 (14:49 +0000)]
regress test for constrained PKCS#11 keys
djm [Mon, 18 Dec 2023 14:48:44 +0000 (14:48 +0000)]
openssh-9.6
djm [Mon, 18 Dec 2023 14:48:08 +0000 (14:48 +0000)]
ssh-agent: record failed session-bind attempts
Record failed attempts to session-bind a connection and refuse signing
operations on that connection henceforth.
Prevents a future situation where we add a new hostkey type that is not
recognised by an older ssh-agent, that consequently causes session-bind
to fail (this situation is only likely to arise when people mix ssh(1)
and ssh-agent(1) of different versions on the same host). Previously,
after such a failure the agent socket would be considered unbound and
not subject to restriction.
Spotted by Jann Horn
djm [Mon, 18 Dec 2023 14:47:44 +0000 (14:47 +0000)]
ban user/hostnames with most shell metacharacters
This makes ssh(1) refuse user or host names provided on the
commandline that contain most shell metacharacters.
Some programs that invoke ssh(1) using untrusted data do not filter
metacharacters in arguments they supply. This could create
interactions with user-specified ProxyCommand and other directives
that allow shell injection attacks to occur.
It's a mistake to invoke ssh(1) with arbitrary untrusted arguments,
but getting this stuff right can be tricky, so this should prevent
most obvious ways of creating risky situations. It however is not
and cannot be perfect: ssh(1) has no practical way of interpreting
what shell quoting rules are in use and how they interact with the
user's specified ProxyCommand.
To allow configurations that use strange user or hostnames to
continue to work, this strictness is applied only to names coming
from the commandline. Names specified using User or Hostname
directives in ssh_config(5) are not affected.
feedback/ok millert@ markus@ dtucker@ deraadt@
djm [Mon, 18 Dec 2023 14:47:20 +0000 (14:47 +0000)]
stricter handling of channel window limits
This makes ssh/sshd more strict in handling non-compliant peers that
send more data than the advertised channel window allows. Previously
the additional data would be silently discarded. This change will
cause ssh/sshd to terminate the connection if the channel window is
exceeded by more than a small grace allowance.
ok markus@
djm [Mon, 18 Dec 2023 14:46:56 +0000 (14:46 +0000)]
Make it possible to load certs from PKCS#11 tokens
Adds a protocol extension to allow grafting certificates supplied by
ssh-add to keys loaded from PKCS#11 tokens in the agent.
feedback/ok markus@
djm [Mon, 18 Dec 2023 14:46:12 +0000 (14:46 +0000)]
apply destination constraints to all p11 keys
Previously applied only to the first key returned from each token.
ok markus@
djm [Mon, 18 Dec 2023 14:45:49 +0000 (14:45 +0000)]
add "ext-info-in-auth@openssh.com" extension
This adds another transport protocol extension to allow a sshd to send
SSH2_MSG_EXT_INFO during user authentication, after the server has
learned the username that is being logged in to.
This lets sshd to update the acceptable signature algoritms for public
key authentication, and allows these to be varied via sshd_config(5)
"Match" directives, which are evaluated after the server learns the
username being authenticated.
Full details in the PROTOCOL file
djm [Mon, 18 Dec 2023 14:45:17 +0000 (14:45 +0000)]
implement "strict key exchange" in ssh and sshd
This adds a protocol extension to improve the integrity of the SSH
transport protocol, particular in and around the initial key exchange
(KEX) phase.
Full details of the extension are in the PROTOCOL file.
with markus@
bluhm [Mon, 18 Dec 2023 13:30:44 +0000 (13:30 +0000)]
Fix race between ifconfig destroy and ARP timer.
After if_detach() has called if_remove(), if_get() will return NULL.
Before if_detach() grabs the net lock, ARP timer can still run. In
this case arptfree() should just return, instead of triggering an
assertion because ifp is NULL. The ARP route will be deleted later
when in_ifdetach() calls in_purgeaddr().
OK kn@ mvs@ claudio@
otto [Mon, 18 Dec 2023 13:23:52 +0000 (13:23 +0000)]
Check if calloc calls succeeded; ok millert@
tb [Mon, 18 Dec 2023 13:12:43 +0000 (13:12 +0000)]
Clean up EVP_PBE_CipherInit() a little
This is mostly stylistic cleanup, making the control flow a bit more
obvious. There's one user-visible change: we no longer go out of our
way to provide info about the unknown algorithm. The nid is enough.
ok joshua jsing
bluhm [Mon, 18 Dec 2023 13:11:20 +0000 (13:11 +0000)]
Run bind(2) system call in parallel.
For protocols that care about locking, use the shared net lock to
call sobind(). Use the per socket rwlock together with shared net
lock. This affects protocols UDP, raw IP, and divert. Move the
inpcb mutex locking into soreceive(), it is only used there. Add
a comment to describe the current inmplementation of inpcb locking.
OK mvs@ sashan@
benno [Mon, 18 Dec 2023 09:51:06 +0000 (09:51 +0000)]
bump version
martijn [Mon, 18 Dec 2023 09:42:57 +0000 (09:42 +0000)]
Fix two memory leaks:
- MIB_snmpInReadOnlys was tried to be registered twice, leading to a leak
of the second instance. Prevent this mistake in the future by making a
double registration fatal.
- The response buffer is owned by the backend, so the backend must also
free it.
OK tb@
tb [Mon, 18 Dec 2023 06:06:57 +0000 (06:06 +0000)]
Remove EVP_MD_meth_*() dependency
This broken API was added for Erlang's otp-test-engine which was disabled
for LibreSSL without explanation shortly afterward. So we can remove this
hazard again.
Unfortunately, libfido2 started using EVP_MD_meth_dup(), but for no good
reason: they dup static data into a buffer that is passed unmodified to
EVP_PKEY_CTX_set_signature_md() only to be freed right after. This makes
no sense.
Rework this and the ifdefery to make it clear that it is OpenSSL who broke
API contracts (again), not LibreSSL.
ok djm jsing
tb [Sun, 17 Dec 2023 08:32:26 +0000 (08:32 +0000)]
c2sp: replace openssl 3.0 with 3.2 support
mvs [Sat, 16 Dec 2023 22:17:08 +0000 (22:17 +0000)]
Make `fuse_rd_filtops' mpsafe.
Introduce `fd_lock' rwlock(9) and use it for `fd_fbufs_in' fuse buffers
queue and `fd_rklist' knotes list protection.
Tested by Rafael Sadowski.
Discussed with and ok from bluhm
mvs [Sat, 16 Dec 2023 22:16:02 +0000 (22:16 +0000)]
Rework pflowioctl() lock dances.
Release netlock and take `sc_lock' rwlock(9) just in the beginning of
pflowioctl() and do corresponding operations in the end. Use `sc_lock'
to protect `sc_dying'.
We need to release netlock not only to keep locks order with `sc_lock'
rwlock(9), but also because pflowioctl() calls some operations like
socreate() or soclose() on udp(4) socket. Current implementation has
many relocking places which breaks atomicy, so merge them into one.
The `sc_lock' rwlock(9) is taken during all pflowioctl() call, so
`sc_dying' atomicy is not broken.
Not the ideal solution, but better then we have now.
Tested by Hrvoje Popovski.
Discussed with and ok from sashan
tb [Sat, 16 Dec 2023 19:14:56 +0000 (19:14 +0000)]
ASN1_STRING_TABLE_get.3: grammar: have -> has
tb [Sat, 16 Dec 2023 17:40:22 +0000 (17:40 +0000)]
EVP_EncryptUpdate(): make block_size and block_mask const
suggested by millert
tb [Sat, 16 Dec 2023 15:22:40 +0000 (15:22 +0000)]
First cleanup pass over EVP_EncryptUpdate()
Use more sensible variable names in order to make the logic a bit easier
to follow. The variables may be renamed in a later pass. Unindent a block
that was squeezed too much to the right and make a few minor stylistic
tweaks.
ok jsing
tb [Sat, 16 Dec 2023 14:09:33 +0000 (14:09 +0000)]
Move EVP_PBE_find() next to the tables
There is no point in having EVP_PBE_CipherInit() between the table and
the lookup functions (which it notably uses).
No code change.
tb [Sat, 16 Dec 2023 14:04:59 +0000 (14:04 +0000)]
Remove OBJ_bsearch_() usage from PBE
Split the table of built-in password based encryption algorithms into two
and use a linear scan over the table corresponding to the type specified
in EVP_PBE_find()'s type argument. Use better variable names, make the
API a bit safer and generally reduce the eye bleed in here.
ok jsing
tb [Sat, 16 Dec 2023 13:23:20 +0000 (13:23 +0000)]
Using two different spellings of NULL in the same line is an achievement