also move ptrace-related helpers to ptrace_machdep.c
Apply some style. Use ANSI C function definitions.
Remove MPSAFE annotations.
Reviewed by: emaste, imp
Discussed with: jrtc27
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D32310
The ino_blkatoff() and indir_blkatoff() functions failed to release
the buffers holding second and third level indirect blocks. This
commit ensures that these buffers are now properly released.
MFC after: 1 week
Sponsored by: Netflix
There are two issues with the checks against VM_MAXUSER_ADDRESS. First,
the comparison should consider the values as unsigned, otherwise
addresses with the high bit set will fail to branch. Second, the value
of VM_MAXUSER_ADDRESS is, by convention, one larger than the maximum
mappable user address and invalid itself. Thus, use the bgeu instruction
for these comparisons.
Add a regression test case for copyin(9).
PR: 257193
Reported by: Robert Morris <rtm@lcs.mit.edu>
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D31209
When handling a kernel page fault, check explicitly that stval resides
in either the user or kernel address spaces, and make the page fault
fatal if not. Otherwise, a properly crafted address may appear to
pmap_fault() as a valid and present page in the kernel map, causing the
page fault to be retried continuously. This is mainly due to the fact
that the upper bits of virtual addresses are not validated by most of
the pmap code.
Faults of this nature should only occur due to some kind of bug in the
kernel, but it is best to handle them gracefully when they do.
Handle user page faults in the same way, sending a SIGSEGV immediately
when a malformed address is encountered.
Add an assertion to pmap_l1(), which should help catch other bugs of
this kind that make it this far.
Reviewed by: jrtc27, markj
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D31208
The 'match' field is only used in the userspace version of the struct
(pf_anchor).
MFC after: 2 weeks
Sponsored by: Rubicon Communications, LLC ("Netgate")
This mirrors the SUBDIR_DEPEND in lib/ncurses/Makefile.
Reported by: jenkins (e.g., riscv64 build #23984)
Fixes: 396851c20a ("ncurses: split libtinfo from libncurses")
Cherry-picked from libfido2 upstream f20a735c0a6f:
iso7816: Avoid storing pointers in a packed structure
On CHERI, and thus Arm's experimental Morello prototype architecture,
pointers are represented as capabilities, which are unforgeable bounded
pointers, providing always-on fine-grained spatial memory safety. The
unforgeability is enforced through the use of tagged memory, with one
validity tag bit per capability-sized-and-aligned word in memory. This
means that storing a pointer to an unaligned location, which is not
guaranteed to work per the C standard, either traps or results in the
capability losing its tag (and thus never being dereferenceable again),
depending on how exactly the store is done (specifically, whether a
capability store or memcpy is used).
However, iso7816 itself does not need to be packed, and doing so likely
causes inefficiencies on existing architectures. The iso7816_header_t
member is packed, and the flexible payload array is a uint8_t (which by
definition has no padding bits and is exactly 8 bits in size and, since
CHAR_BITS must be at least 8, its existence implies that it has the same
representation as unsigned char, and that it has size and alignment 1)
so there will never be any padding inserted between header and payload
(but payload may overlap with padding at the end of the struct due to
how flexible arrays work, which means we need to be careful about our
calculations).
Co-authored-by: pedro martelletto <pedro@yubico.com>
Pass the ivlen along through, and just drop this KASSERT() if we're
building _STANDALONE for the time being.
Fixes: 1833d6042c ("crypto: Permit variable-sized IVs ...")
This is useful for diagnosing problems. In particular, the errata
sheets identify the EEPROM version for many fixes.
Reviewed by: gallatin
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D32333
Otherwise results in KASSERT with debug kernels because we rely on the
iflib CTX lock to implement the software serialization to the NVM model
Reviewed by: gallatin
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D32333
This is useful for WireGuard which uses a nonce of 8 bytes rather
than the 12 bytes used for IPsec and TLS.
Note that this also fixes a (should be) harmless bug in ossl(4) where
the counter was incorrectly treated as a 64-bit counter instead of a
32-bit counter in terms of wrapping when using a 12 byte nonce.
However, this required a single message (TLS record) longer than 64 *
(2^32 - 1) bytes (about 256 GB) to trigger.
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32122
Previously, only test vectors which used the default nonce and tag
sizes (12 and 16, respectively) were tested. This now tests all of
the vectors. This exposed some additional issues around requests with
an empty payload (which wasn't supported) and an empty AAD (which
falls back to CIOCCRYPT instead of CIOCCRYPTAEAD).
- Make use of the 'ivlen' and 'maclen' fields for CIOGSESSION2 to
test AES-CCM vectors with non-default nonce and tag lengths.
- Permit requests with an empty payload.
- Permit an input MAC for requests without AAD.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32121
The tag length is included as one of the values in the flags byte of
block 0 passed to CBC_MAC, so merely copying the first N bytes is
insufficient.
To avoid adding more sideband data to the CBC MAC software context,
pull the generation of block 0, the AAD length, and AAD padding out of
cbc_mac.c and into cryptosoft.c. This matches how GCM/GMAC are
handled where the length block is constructed in cryptosoft.c and
passed as an input to the Update callback. As a result, the CBC MAC
Update() routine is now much simpler and simply performs the
XOR-and-encrypt step on each input block.
While here, avoid a copy to the staging block in the Update routine
when one or more full blocks are passed as input to the Update
callback.
Reviewed by: sef
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32120
Permit nonces of lengths 7 through 13 in the OCF framework and the
cryptosoft driver. A helper function (ccm_max_payload_length) can be
used in OCF drivers to reject CCM requests which are too large for the
specified nonce length.
Reviewed by: sef
Sponsored by: Chelsio Communications, The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32111
By default, the "normal" IV size (12) is used, but it can be overriden
via -I. If -I is not specified and -z is specified, issue requests
for all possible IV sizes.
Reviewed by: markj
Sponsored by: Chelsio Communications, The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32110
If an operation would generate a MAC output (e.g. for digest operation
or for an AEAD or EtA operation), then an empty payload buffer is
valid. Only reject requests with an empty buffer for "plain" cipher
sessions.
Some of the AES-CCM NIST KAT vectors use an empty payload.
While here, don't advance crp_payload_start for requests that use an
empty payload with an inline IV. (*)
Reported by: syzbot+d4b94fbd9a44b032f428@syzkaller.appspotmail.com (*)
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32109
A request without AAD for an AEAD cipher can be submitted via
CIOCCRYPT rather than CIOCCRYPTAEAD.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32108
Add 'ivlen' and 'maclen' fields to the structure used for CIOGSESSION2
to specify the explicit IV/nonce and MAC/tag lengths for crypto
sessions. If these fields are zero, the default lengths are used.
This permits selecting an alternate nonce length for AEAD ciphers such
as AES-CCM which support multiple nonce leengths. It also supports
truncated MACs as input to AEAD or ETA requests.
Reviewed by: markj
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32107
Rather than copying crp_iv to a local array on the stack that is then
passed to xform reinit routines, pass crp_iv directly and remove the
local copy.
Reviewed by: markj
Sponsored by: Chelsio Communications, The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32106
Add a 'len' argument to the reinit hook in 'struct enc_xform' to
permit support for AEAD ciphers such as AES-CCM and Chacha20-Poly1305
which support different nonce lengths.
Reviewed by: markj
Sponsored by: Chelsio Communications, The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32105
While here, use crypto_read_iv() in a few more places in ccr(4) that I
missed previously.
Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D32104
- Retire cse->mode and use csp->csp_mode instead.
- Use csp->csp_cipher_algorithm instead of the ivsize when checking
for the fixup for the IV length for AES-XTS.
Reviewed by: markj
Sponsored by: Chelsio Communications, The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32103
Drop arguments of function prototypes since the file is mixed between
listing arg names and not.
No functional changes
Reviewed by: markj
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D32329
login.conf.5 listed passwordtime in RESERVED CAPABILITIES, which is a
section for capabilities not implemented in the base system. However,
passwordtime has been implemented in the base for several years now.
PR: 246099
Reported by: avg
Reviewed by: 0mp
MFC after: 3 days
The DevFusePoll::access/select test would occasionally segfault. The
cause was a file descriptor that was shared between two threads. The
first thread would kill the second and close the file descriptor. But
it was possible that the second would read the file descriptor before it
shut down. That did not cause problems for kqueue, poll, or blocking
operation, but it triggered segfaults in select's macros.
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D32142
Consumers that want the full allocation size will typically access the
full buffer, so mark the entire allocation as valid to avoid useless
KASAN reports.
Sponsored by: The FreeBSD Foundation
If the FUSE server tells the kernel that a file's size has changed, then
the kernel must invalidate any portion of that file in cache. But the
kernel can't do that during VOP_STRATEGY, because the file's buffers are
already locked. Instead, proceed with the write.
PR: 256937
Reported by: Agata <chogata@moosefs.pro>
Tested by: Agata <chogata@moosefs.pro>
MFC after: 2 weeks
Reviewed by: pfg
Differential Revision: https://reviews.freebsd.org/D32332
fuse_vnop_bmap needs to know the file's size in order to calculate the
optimum amount of readahead. If the file's size is unknown, it must ask
the FUSE server. But if the file's data was previously cached and the
server reports that its size has shrunk, fusefs must invalidate the
cached data. That's not possible during VOP_BMAP because the buffer
object is already locked.
Fix the panic by not querying the FUSE server for the file's size during
VOP_BMAP if we don't need it. That's also a a slight performance
optimization.
PR: 256937
Reported by: Agata <chogata@moosefs.pro>
Tested by: Agata <chogata@moosefs.pro>
MFC after: 2 weeks
If the FUSE server does something that would make our cache incoherent,
we should print a warning to the user. However, we previously warned in
some situations when we shouldn't, such as if the file's size changed on
the server _after_ our own attribute cache had expired. This change
suppresses the warning in cases like that. It also moves the warning
logic to a single place within the code.
PR: 256936
Reported by: Agata <chogata@moosefs.pro>
Tested by: Agata <chogata@moosefs.pro>, jSML4ThWwBID69YC@protonmail.com
MFC after: 2 weeks
This is compatible with Linux, and some driver error paths depend on it.
Reviewed by: bz, emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D32337
