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Add session based HMAC authentication plus parameter decryption and
response encryption using AES. The basic design is to segregate all
the nasty crypto, hash and hmac code into tpm2-sessions.c and export a
usable API. The API first of all starts off by gaining a session with
tpm2_start_auth_session() which initiates a session with the TPM and
allocates an opaque tpm2_auth structure to handle the session
parameters. The design is that session use will be single threaded
from start to finish under the ops lock, so the tpm2_auth structure is
stored in struct tpm2_chip to simpify the externally visible API.
The session can be ended with tpm2_end_auth_session() which is
designed only to be used in error legs. Ordinarily the further
session API (future patches) will end or continue the session
appropriately without having to call this.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> # crypto API parts
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The TCG mandates two Key derivation functions called KDFa and KDFe
used to derive keys from seeds and elliptic curve points respectively.
The definitions for these functions are found in the TPM 2.0 Library
Specification Part 1 - Architecture Guide
https://trustedcomputinggroup.org/resource/tpm-library-specification/
Implement a cut down version of each of these functions sufficient to
support the key derivation needs of HMAC sessions.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The session handling code uses a "salted" session, meaning a session
whose salt is encrypted to the public part of another TPM key so an
observer cannot obtain it (and thus deduce the session keys). This
patch creates and context saves in the tpm_chip area the primary key
of the NULL hierarchy for this purpose.
[jarkko@kernel.org: fixed documentation errors]
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The TPM2 session HMAC and encryption handling code needs to save and
restore a single volatile context for the elliptic curve version of
the NULL seed, so export the APIs which do this for internal use.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Replace all instances of &buf.data[TPM_HEADER_SIZE] with a new
function tpm_buf_parameters() because encryption sessions change
where the return parameters are located in the buffer since if a
return session is present they're 4 bytes beyond the header with those
4 bytes giving the parameter length. If there is no return session,
then they're in the usual place immediately after the header.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Implement AES in CFB mode using the existing, mostly constant-time
generic AES library implementation. This will be used by the TPM code
to encrypt communications with TPM hardware, which is often a discrete
component connected using sniffable wires or traces.
While a CFB template does exist, using a skcipher is a major pain for
non-performance critical synchronous crypto where the algorithm is known
at compile time and the data is in contiguous buffers with valid kernel
virtual addresses.
Tested-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/all/20230216201410.15010-1-James.Bottomley@HansenPartnership.com/
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Take advantage of the new sized buffer (TPM2B) mode of struct tpm_buf in
tpm2_seal_trusted(). This allows to add robustness to the command
construction without requiring to calculate buffer sizes manually.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Declare reader functions for the instances of struct tpm_buf. If the read
goes out of boundary, TPM_BUF_BOUNDARY_ERROR is set, and subsequent read
will do nothing.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Declare tpm_buf_init_sized() and tpm_buf_reset_sized() for creating TPM2B
formatted buffers. These buffers are also known as sized buffers in the
specifications and literature.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
TPM2B buffers, or sized buffers, have a two byte header, which contains the
length of the payload as a 16-bit big-endian number, without counting in
the space taken by the header. This differs from encoding in the TPM header
where the length includes also the bytes taken by the header.
Unbound the length of a tpm_buf from the value stored to the TPM command
header. A separate encoding and decoding step so that different buffer
types can be supported, with variant header format and length encoding.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Remove deprecated portions and document enum values.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
separate out the tpm_buf_... handling functions from static inlines in
tpm.h and move them to their own tpm-buf.c file. This is a precursor
to adding new functions for other TPM type handling because the amount
of code will grow from the current 70 lines in tpm.h to about 200
lines when the additions are done. 200 lines of inline functions is a
bit too much to keep in a header file.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Open code the last remaining call site for tpm_send().
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The helper function has no call sites. Thus, remove it.
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
The recent change to handle HAS_IOPORT removed the TPM_INF_IO_PORT
define for the HAS_IOPORT=n case despite the define being used in
sections of code not covered by the same ifdef check. This was missed
because at the moment TCG_INFINEON indirectly depends on HAS_IOPORT via
PNP which depends on ACPI || ISA. As TCG_INFINEON does in principle
support MMIO only use add it for COMPILE_TEST to cover the HAS_IOPORT=n
case.
Link: https://lore.kernel.org/lkml/9d9fa267-067e-421b-9a39-aa178b913298@app.fastmail.com/
Fixes: dab56f80e7f9 ("char: tpm: handle HAS_IOPORT dependencies")
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Add the ST chip st33ktpm2xi2c to the supported compatible strings of the
TPM TIS I2C schema. The Chip is compliant with the TCG PC Client TPM
Profile specification.
For reference, a datasheet is available at:
https://www.st.com/resource/en/data_brief/st33ktpm2xi2c.pdf
Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Signed-off-by: Michael Haener <michael.haener@siemens.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Based recent discussions on LKML, provide preliminary bits of tpm_tis_core
dependent drivers. Includes only bare essentials but can be extended later
on case by case. This way some people may even want to read it later on.
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Variable ret is being assigned and error code that is never read, it is
either being re-assigned in an error exit path or never referenced again
on the non-error path. The assignment is redundant and can be removed.
Cleans up clang scan build warning:
drivers/char/tpm/eventlog/acpi.c:145:2: warning: Value stored to 'ret'
is never read [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at
compile time. We thus need to add this dependency and ifdef sections of
code using inb()/outb() as alternative access methods.
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
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Merge tag '6.9-rc7-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
"Five ksmbd server fixes, all also for stable
- Three fixes related to SMB3 leases (fixes two xfstests, and a
locking issue)
- Unitialized variable fix
- Socket creation fix when bindv6only is set"
* tag '6.9-rc7-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: do not grant v2 lease if parent lease key and epoch are not set
ksmbd: use rwsem instead of rwlock for lease break
ksmbd: avoid to send duplicate lease break notifications
ksmbd: off ipv6only for both ipv4/ipv6 binding
ksmbd: fix uninitialized symbol 'share' in smb2_tree_connect()
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Merge tag 'fuse-fixes-6.9-final' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fixes from Miklos Szeredi:
"Two one-liner fixes for issues introduced in -rc1"
* tag 'fuse-fixes-6.9-final' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
virtiofs: include a newline in sysfs tag
fuse: verify zero padding in fuse_backing_map
- Fix xfstests generic/013 test failure with dirsync mount option.
- Initialize the reserved fields of deleted file and stream extension
dentries to zero.
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Merge tag 'exfat-for-6.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat
Pull exfat fixes from Namjae Jeon:
- Fix xfstests generic/013 test failure with dirsync mount option
- Initialize the reserved fields of deleted file and stream extension
dentries to zero
* tag 'exfat-for-6.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: zero the reserved fields of file and stream extension dentries
exfat: fix timing of synchronizing bitmap and inode
- Various syzbot fixes; mainly small gaps in validation
- Fix an integer overflow in fiemap() which was preventing filefrag from
returning the full list of extents
- Fix a refcounting bug on the device refcount, turned up by new
assertions in the development branch
- Fix a device removal/readd bug; write_super() was repeatedly dropping
and retaking bch_dev->io_ref references
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Merge tag 'bcachefs-2024-05-07.2' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs fixes from Kent Overstreet:
- Various syzbot fixes; mainly small gaps in validation
- Fix an integer overflow in fiemap() which was preventing filefrag
from returning the full list of extents
- Fix a refcounting bug on the device refcount, turned up by new
assertions in the development branch
- Fix a device removal/readd bug; write_super() was repeatedly dropping
and retaking bch_dev->io_ref references
* tag 'bcachefs-2024-05-07.2' of https://evilpiepirate.org/git/bcachefs:
bcachefs: Add missing sched_annotate_sleep() in bch2_journal_flush_seq_async()
bcachefs: Fix race in bch2_write_super()
bcachefs: BCH_SB_LAYOUT_SIZE_BITS_MAX
bcachefs: Add missing skcipher_request_set_callback() call
bcachefs: Fix snapshot_t() usage in bch2_fs_quota_read_inode()
bcachefs: Fix shift-by-64 in bformat_needs_redo()
bcachefs: Guard against unknown k.k->type in __bkey_invalid()
bcachefs: Add missing validation for superblock section clean
bcachefs: Fix assert in bch2_alloc_v4_invalid()
bcachefs: fix overflow in fiemap
bcachefs: Add a better limit for maximum number of buckets
bcachefs: Fix lifetime issue in device iterator helpers
bcachefs: Fix bch2_dev_lookup() refcounting
bcachefs: Initialize bch_write_op->failed in inline data path
bcachefs: Fix refcount put in sb_field_resize error path
bcachefs: Inodes need extra padding for varint_decode_fast()
bcachefs: Fix early error path in bch2_fs_btree_key_cache_exit()
bcachefs: bucket_pos_to_bp_noerror()
bcachefs: don't free error pointers
bcachefs: Fix a scheduler splat in __bch2_next_write_buffer_flush_journal_buf()
These are a couple of last minute fixes that came in over the
previous week, addressing:
- A pin configuration bug on a qualcomm board that caused
issues with ethernet and mmc.
- Two minor code fixes for misleading console output in the
microchip firmware driver.
- A build warning in the sifive cache driver
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Merge tag 'soc-fixes-6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"These are a couple of last minute fixes that came in over the previous
week, addressing:
- A pin configuration bug on a qualcomm board that caused issues with
ethernet and mmc
- Two minor code fixes for misleading console output in the microchip
firmware driver
- A build warning in the sifive cache driver"
* tag 'soc-fixes-6.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
firmware: microchip: clarify that sizes and addresses are in hex
firmware: microchip: don't unconditionally print validation success
arm64: dts: qcom: sa8155p-adp: fix SDHC2 CD pin configuration
cache: sifive_ccache: Silence unused variable warning
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Merge tag 'pci-v6.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:
- Update kernel-parameters doc to describe "pcie_aspm=off" more
accurately (Bjorn Helgaas)
- Restore the parent's (not the child's) ASPM state to the parent
during resume, which fixes a reboot during resume (Kai-Heng Feng)
* tag 'pci-v6.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
PCI/ASPM: Restore parent state to parent, child state to child
PCI/ASPM: Clarify that pcie_aspm=off means leave ASPM untouched
The internal tag string doesn't contain a newline. Append one when
emitting the tag via sysfs.
[Stefan] Orthogonal to the newline issue, sysfs_emit(buf, "%s", fs->tag) is
needed to prevent format string injection.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Fixes: a8f62f50b4e4 ("virtiofs: export filesystem tags through sysfs")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
bch2_write_super() was looping over online devices multiple times -
dropping and retaking io_ref each time.
This meant it could race with device removal; it could increment the
sequence number on a device but fail to write it - and then if the
device was re-added, it would get confused the next time around thinking
a superblock write was silently dropped.
Fix this by taking io_ref once, and stashing pointers to online devices
in a darray.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
On ths SA8155P automotive platform, the wrong gpio controller is defined
for the SD-card detect pin, which depending on probe ordering of things
cause ethernet to be broken. The card detect pin reference is corrected
to solve this problem.
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Merge tag 'qcom-arm64-fixes-for-6.9-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes
One more Qualcomm Arm64 DeviceTree fix for v6.9
On ths SA8155P automotive platform, the wrong gpio controller is defined
for the SD-card detect pin, which depending on probe ordering of things
cause ethernet to be broken. The card detect pin reference is corrected
to solve this problem.
* tag 'qcom-arm64-fixes-for-6.9-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
arm64: dts: qcom: sa8155p-adp: fix SDHC2 CD pin configuration
Link: https://lore.kernel.org/r/20240427153817.1430382-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'for-6.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Two more fixes, both have some visible effects on user space:
- add check if quotas are enabled when passing qgroup inheritance
info, this affects snapper that could fail to create a snapshot
- do check for leaf/node flag WRITTEN earlier so that nodes are
completely validated before access, this used to be done by
integrity checker but it's been removed and left an unhandled case"
* tag 'for-6.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: make sure that WRITTEN is set on all metadata blocks
btrfs: qgroup: do not check qgroup inherit if qgroup is disabled
This reverts commit 07ed11afb68d94eadd4ffc082b97c2331307c5ea.
Stephen Rostedt reports:
"I went to run my tests on my VMs and the tests hung on boot up.
Unfortunately, the most I ever got out was:
[ 93.607888] Testing event system initcall: OK
[ 93.667730] Running tests on all trace events:
[ 93.669757] Testing all events: OK
[ 95.631064] ------------[ cut here ]------------
Timed out after 60 seconds"
and further debugging points to a possible circular locking dependency
between the console_owner locking and the worker pool locking.
Reverting the commit allows Steve's VM to boot to completion again.
[ This may obviously result in the "[TTM] Buffer eviction failed"
messages again, which was the reason for that original revert. But at
this point this seems preferable to a non-booting system... ]
Reported-and-bisected-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lore.kernel.org/all/20240502081641.457aa25f@gandalf.local.home/
Acked-by: Maxime Ripard <mripard@kernel.org>
Cc: Alex Constantino <dreaming.about.electric.sheep@gmail.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Timo Lindfors <timo.lindfors@iki.fi>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There's a typo that makes parent device uses child LNKCTL value and vice
versa. This causes Micron NVMe to trigger a reboot upon system resume.
Correct the typo to fix the issue.
Fixes: 64dbb2d70744 ("PCI/ASPM: Disable L1 before configuring L1 Substates")
Link: https://lore.kernel.org/r/20240506051602.1990743-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
[bhelgaas: update subject]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Merge tag 'slab-for-6.9-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Fix for cleanup infrastructure (Dan Carpenter)
This makes the __free(kfree) cleanup hooks not crash on error
pointers.
- SLUB fix for freepointer checking (Nicolas Bouchinet)
This fixes a recently introduced bug that manifests when
init_on_free, CONFIG_SLAB_FREELIST_HARDENED and consistency checks
(slub_debug=F) are all enabled, and results in false-positive
freepointer corrupt reports for caches that store freepointer outside
of the object area.
* tag 'slab-for-6.9-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: make __free(kfree) accept error pointers
mm/slub: avoid zeroing outside-object freepointer for single free
* A couple of non-critical build fixes to Character LCD library
* Miscellaneous fixes here and there
The following is an automated git shortlog grouped by driver:
charlcd:
- Don't rebuild when CONFIG_PANEL_BOOT_MESSAGE=y
- Add missing MODULE_DESCRIPTION()
linedisp:
- Group display drivers together
seg-led-gpio:
- Convert to platform remove callback returning void
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Merge tag 'auxdisplay-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay
Pull auxdisplay fixes from Andy Shevchenko:
- A couple of non-critical build fixes to Character LCD library
- Miscellaneous fixes here and there
* tag 'auxdisplay-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
auxdisplay: charlcd: Don't rebuild when CONFIG_PANEL_BOOT_MESSAGE=y
auxdisplay: charlcd: Add missing MODULE_DESCRIPTION()
auxdisplay: seg-led-gpio: Convert to platform remove callback returning void
auxdisplay: linedisp: Group display drivers together
bch2_fs_quota_read_inode() wasn't entirely updated to the
bch2_snapshot_tree() helper, which takes rcu lock.
Reported-by: syzbot+a3a9a61224ed3b7f0010@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Ancient versions of bcachefs produced packed formats that could
represent keys that our in memory format cannot represent;
bformat_needs_redo() has some tricky shifts to check for this sort of
overflow.
Reported-by: syzbot+594427aebfefeebe91c6@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
For forwards compatibility we have to allow unknown key types, and only
run the checks that make sense against them.
Fix a missing guard on k.k->type being known.
Reported-by: syzbot+ae4dc916da3ce51f284f@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We were forgetting to check for jset entries that overrun the end of the
section - both in validate and to_text(); to_text() needs to be safe for
types that fail to validate.
Reported-by: syzbot+c48865e11e7e893ec4ab@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
filefrag (and potentially other utilities that call fiemap) sometimes
pass ULONG_MAX as the length. fiemap_prep clamps excessively large
lengths - but the calculation of end can overflow if it occurs before
calling fiemap_prep. When this happens, filefrag assumes it has read to
the end and exits.
Signed-off-by: Reed Riley <reed@riley.engineer>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
The bucket_gens array is a single array allocation (one byte per
bucket), and kernel allocations are still limited to INT_MAX.
Check this limit to avoid failing the bucket_gens array allocation.
Reported-by: syzbot+b29f436493184ea42e2b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_get_next_dev() and bch2_get_next_online_dev() iterate over devices,
dropping and taking refs as they go; we can't access the previous device
(for ca->dev_idx) after we've dropped our ref to it, unless we take
rcu_read_lock() first.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_dev_lookup() is supposed to take a ref on the device it returns, but
for_each_member_device() takes refs as it iterates,
for_each_member_device_rcu() does not.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Normally this is initialized in __bch2_write(), which is executed in a
loop, but the inline data path skips this.
Reported-by: syzbot+fd3ccb331eb21f05d13b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
