Function demote_incompat_holders iterates over the list of glock holders
with list_for_each_entry, and it then sometimes removes the current
holder from the list. This will get the loop stuck; we must use
list_for_each_entry_safe instead.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Fix the length of holes reported at the end of a file: the length is
relative to the beginning of the extent, not the seek position which is
rounded down to the filesystem block size.
This bug went unnoticed for some time, but is now caught by the
following assertion in iomap_iter_done():
WARN_ON_ONCE(iter->iomap.offset + iter->iomap.length <= iter->pos)
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Before this patch, evict would clear the iopen glock's gl_object after
releasing the inode glock. In the meantime, another process could reuse
the same block and thus glocks for a new inode. It would lock the inode
glock (exclusively), and then the iopen glock (shared). The shared
locking mode doesn't provide any ordering against the evict, so by the
time the iopen glock is reused, evict may not have gotten to setting
gl_object to NULL.
Fix that by releasing the iopen glock before the inode glock in
gfs2_evict_inode.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>gl_object
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Replace test_bit() + set_bit() with test_and_set_bit() where we need an atomic
operation. Use clear_and_wake_up_bit() instead of open coding it.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Pull gfs2 updates from Andreas Gruenbacher:
- Fix a locking order inversion between the inode and iopen glocks in
gfs2_inode_lookup.
- Implement proper queuing of glock holders for glocks that require
instantiation (like reading an inode or bitmap blocks from disk).
Before, multiple glock holders could race with each other and
half-initialized objects could be exposed; the GL_SKIP flag further
exacerbated this problem.
- Fix a rare deadlock between inode lookup / creation and remote delete
work.
- Fix a rare scheduling-while-atomic bug in dlm during glock hash table
walks.
- Various other minor fixes and cleanups.
* tag 'gfs2-v5.15-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (21 commits)
gfs2: Fix unused value warning in do_gfs2_set_flags()
gfs2: check context in gfs2_glock_put
gfs2: Fix glock_hash_walk bugs
gfs2: Cancel remote delete work asynchronously
gfs2: set glock object after nq
gfs2: remove RDF_UPTODATE flag
gfs2: Eliminate GIF_INVALID flag
gfs2: fix GL_SKIP node_scope problems
gfs2: split glock instantiation off from do_promote
gfs2: further simplify do_promote
gfs2: re-factor function do_promote
gfs2: Remove 'first' trace_gfs2_promote argument
gfs2: change go_lock to go_instantiate
gfs2: dump glocks from gfs2_consist_OBJ_i
gfs2: dequeue iopen holder in gfs2_inode_lookup error
gfs2: Save ip from gfs2_glock_nq_init
gfs2: Allow append and immutable bits to coexist
gfs2: Switch some BUG_ON to GLOCK_BUG_ON for debug
gfs2: move GL_SKIP check from glops to do_promote
gfs2: Add GL_SKIP holder flag to dump_holder
...
Pull gfs2 mmap + page fault deadlocks fixes from Andreas Gruenbacher:
"Functions gfs2_file_read_iter and gfs2_file_write_iter are both
accessing the user buffer to write to or read from while holding the
inode glock.
In the most basic deadlock scenario, that buffer will not be resident
and it will be mapped to the same file. Accessing the buffer will
trigger a page fault, and gfs2 will deadlock trying to take the same
inode glock again while trying to handle that fault.
Fix that and similar, more complex scenarios by disabling page faults
while accessing user buffers. To make this work, introduce a small
amount of new infrastructure and fix some bugs that didn't trigger so
far, with page faults enabled"
* tag 'gfs2-v5.15-rc5-mmap-fault' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
gfs2: Fix mmap + page fault deadlocks for direct I/O
iov_iter: Introduce nofault flag to disable page faults
gup: Introduce FOLL_NOFAULT flag to disable page faults
iomap: Add done_before argument to iomap_dio_rw
iomap: Support partial direct I/O on user copy failures
iomap: Fix iomap_dio_rw return value for user copies
gfs2: Fix mmap + page fault deadlocks for buffered I/O
gfs2: Eliminate ip->i_gh
gfs2: Move the inode glock locking to gfs2_file_buffered_write
gfs2: Introduce flag for glock holder auto-demotion
gfs2: Clean up function may_grant
gfs2: Add wrapper for iomap_file_buffered_write
iov_iter: Introduce fault_in_iov_iter_writeable
iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable
gup: Turn fault_in_pages_{readable,writeable} into fault_in_{readable,writeable}
powerpc/kvm: Fix kvm_use_magic_page
iov_iter: Fix iov_iter_get_pages{,_alloc} page fault return value
Pull KVM updates from Paolo Bonzini:
"ARM:
- More progress on the protected VM front, now with the full fixed
feature set as well as the limitation of some hypercalls after
initialisation.
- Cleanup of the RAZ/WI sysreg handling, which was pointlessly
complicated
- Fixes for the vgic placement in the IPA space, together with a
bunch of selftests
- More memcg accounting of the memory allocated on behalf of a guest
- Timer and vgic selftests
- Workarounds for the Apple M1 broken vgic implementation
- KConfig cleanups
- New kvmarm.mode=none option, for those who really dislike us
RISC-V:
- New KVM port.
x86:
- New API to control TSC offset from userspace
- TSC scaling for nested hypervisors on SVM
- Switch masterclock protection from raw_spin_lock to seqcount
- Clean up function prototypes in the page fault code and avoid
repeated memslot lookups
- Convey the exit reason to userspace on emulation failure
- Configure time between NX page recovery iterations
- Expose Predictive Store Forwarding Disable CPUID leaf
- Allocate page tracking data structures lazily (if the i915 KVM-GT
functionality is not compiled in)
- Cleanups, fixes and optimizations for the shadow MMU code
s390:
- SIGP Fixes
- initial preparations for lazy destroy of secure VMs
- storage key improvements/fixes
- Log the guest CPNC
Starting from this release, KVM-PPC patches will come from Michael
Ellerman's PPC tree"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (227 commits)
RISC-V: KVM: fix boolreturn.cocci warnings
RISC-V: KVM: remove unneeded semicolon
RISC-V: KVM: Fix GPA passed to __kvm_riscv_hfence_gvma_xyz() functions
RISC-V: KVM: Factor-out FP virtualization into separate sources
KVM: s390: add debug statement for diag 318 CPNC data
KVM: s390: pv: properly handle page flags for protected guests
KVM: s390: Fix handle_sske page fault handling
KVM: x86: SGX must obey the KVM_INTERNAL_ERROR_EMULATION protocol
KVM: x86: On emulation failure, convey the exit reason, etc. to userspace
KVM: x86: Get exit_reason as part of kvm_x86_ops.get_exit_info
KVM: x86: Clarify the kvm_run.emulation_failure structure layout
KVM: s390: Add a routine for setting userspace CPU state
KVM: s390: Simplify SIGP Set Arch handling
KVM: s390: pv: avoid stalls when making pages secure
KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
KVM: s390: pv: avoid double free of sida page
KVM: s390: pv: add macros for UVC CC values
s390/mm: optimize reset_guest_reference_bit()
s390/mm: optimize set_guest_storage_key()
s390/mm: no need for pte_alloc_map_lock() if we know the pmd is present
...
Pull hyperv updates from Wei Liu:
- Initial patch set for Hyper-V isolation VM support (Tianyu Lan)
- Fix a warning on preemption (Vitaly Kuznetsov)
- A bunch of misc cleanup patches
* tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
x86/hyperv: Protect set_hv_tscchange_cb() against getting preempted
Drivers: hv : vmbus: Adding NULL pointer check
x86/hyperv: Remove duplicate include
x86/hyperv: Remove duplicated include in hv_init
Drivers: hv: vmbus: Remove unused code to check for subchannels
Drivers: hv: vmbus: Initialize VMbus ring buffer for Isolation VM
Drivers: hv: vmbus: Add SNP support for VMbus channel initiate message
x86/hyperv: Add ghcb hvcall support for SNP VM
x86/hyperv: Add Write/Read MSR registers via ghcb page
Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM
x86/hyperv: Add new hvcall guest address host visibility support
x86/hyperv: Initialize shared memory boundary in the Isolation VM.
x86/hyperv: Initialize GHCB page in Isolation VM
Pull printk updates from Petr Mladek:
- Extend %pGp print format to print hex value of the page flags
- Use kvmalloc instead of kmalloc to allocate devkmsg buffers
- Misc cleanup and warning fixes
* tag 'printk-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
vsprintf: Update %pGp documentation about that it prints hex value
lib/vsprintf.c: Amend static asserts for format specifier flags
vsprintf: Make %pGp print the hex value
test_printf: Append strings more efficiently
test_printf: Remove custom appending of '|'
test_printf: Remove separate page_flags variable
test_printf: Make pft array const
ia64: don't do IA64_CMPXCHG_DEBUG without CONFIG_PRINTK
printk: use gnu_printf format attribute for printk_sprint()
printk: avoid -Wsometimes-uninitialized warning
printk: use kvmalloc instead of kmalloc for devkmsg_user
Pull integrity subsystem updates from Mimi Zohar:
"Other than the new gid IMA policy rule support and the RCU locking
fix, the couple of remaining changes are minor/trivial (e.g.
__ro_after_init, replacing strscpy)"
* tag 'integrity-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
evm: mark evm_fixmode as __ro_after_init
ima: Use strscpy instead of strlcpy
ima_policy: Remove duplicate 'the' in docs comment
ima: add gid support
ima: fix uid code style problems
ima: fix deadlock when traversing "ima_default_rules".
Pull libata updates from Damien Le Moal:
- Remove duplicated AHCI adapter PCI device IDs (from Krzysztof)
- Cleanup of device DMA state checking to consistantly use
ata_dma_enabled() (from Reimar)
* tag 'libata-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
pata_radisys: fix checking of DMA state
pata_optidma: fix checking of DMA state
pata_amd: fix checking of DMA state
pata_ali: fix checking of DMA state
libata-scsi: fix checking of DMA state
libata: fix checking of DMA state
Add AHCI support for ASM1062+JBM575 cards
ahci: remove duplicated PCI device IDs
Pull x86 core updates from Borislav Petkov:
- Do not #GP on userspace use of CLI/STI but pretend it was a NOP to
keep old userspace from breaking. Adjust the corresponding iopl
selftest to that.
- Improve stack overflow warnings to say which stack got overflowed and
raise the exception stack sizes to 2 pages since overflowing the
single page of exception stack is very easy to do nowadays with all
the tracing machinery enabled. With that, rip out the custom mapping
of AMD SEV's too.
- A bunch of changes in preparation for FGKASLR like supporting more
than 64K section headers in the relocs tool, correct ORC lookup table
size to cover the whole kernel .text and other adjustments.
* tag 'x86_core_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/x86/iopl: Adjust to the faked iopl CLI/STI usage
vmlinux.lds.h: Have ORC lookup cover entire _etext - _stext
x86/boot/compressed: Avoid duplicate malloc() implementations
x86/boot: Allow a "silent" kaslr random byte fetch
x86/tools/relocs: Support >64K section headers
x86/sev: Make the #VC exception stacks part of the default stacks storage
x86: Increase exception stack sizes
x86/mm/64: Improve stack overflow warnings
x86/iopl: Fake iopl(3) CLI/STI usage
Pull networking updates from Jakub Kicinski:
"Core:
- Remove socket skb caches
- Add a SO_RESERVE_MEM socket op to forward allocate buffer space and
avoid memory accounting overhead on each message sent
- Introduce managed neighbor entries - added by control plane and
resolved by the kernel for use in acceleration paths (BPF / XDP
right now, HW offload users will benefit as well)
- Make neighbor eviction on link down controllable by userspace to
work around WiFi networks with bad roaming implementations
- vrf: Rework interaction with netfilter/conntrack
- fq_codel: implement L4S style ce_threshold_ect1 marking
- sch: Eliminate unnecessary RCU waits in mini_qdisc_pair_swap()
BPF:
- Add support for new btf kind BTF_KIND_TAG, arbitrary type tagging
as implemented in LLVM14
- Introduce bpf_get_branch_snapshot() to capture Last Branch Records
- Implement variadic trace_printk helper
- Add a new Bloomfilter map type
- Track <8-byte scalar spill and refill
- Access hw timestamp through BPF's __sk_buff
- Disallow unprivileged BPF by default
- Document BPF licensing
Netfilter:
- Introduce egress hook for looking at raw outgoing packets
- Allow matching on and modifying inner headers / payload data
- Add NFT_META_IFTYPE to match on the interface type either from
ingress or egress
Protocols:
- Multi-Path TCP:
- increase default max additional subflows to 2
- rework forward memory allocation
- add getsockopts: MPTCP_INFO, MPTCP_TCPINFO, MPTCP_SUBFLOW_ADDRS
- MCTP flow support allowing lower layer drivers to configure msg
muxing as needed
- Automatic Multicast Tunneling (AMT) driver based on RFC7450
- HSR support the redbox supervision frames (IEC-62439-3:2018)
- Support for the ip6ip6 encapsulation of IOAM
- Netlink interface for CAN-FD's Transmitter Delay Compensation
- Support SMC-Rv2 eliminating the current same-subnet restriction, by
exploiting the UDP encapsulation feature of RoCE adapters
- TLS: add SM4 GCM/CCM crypto support
- Bluetooth: initial support for link quality and audio/codec offload
Driver APIs:
- Add a batched interface for RX buffer allocation in AF_XDP buffer
pool
- ethtool: Add ability to control transceiver modules' power mode
- phy: Introduce supported interfaces bitmap to express MAC
capabilities and simplify PHY code
- Drop rtnl_lock from DSA .port_fdb_{add,del} callbacks
New drivers:
- WiFi driver for Realtek 8852AE 802.11ax devices (rtw89)
- Ethernet driver for ASIX AX88796C SPI device (x88796c)
Drivers:
- Broadcom PHYs
- support 72165, 7712 16nm PHYs
- support IDDQ-SR for additional power savings
- PHY support for QCA8081, QCA9561 PHYs
- NXP DPAA2: support for IRQ coalescing
- NXP Ethernet (enetc): support for software TCP segmentation
- Renesas Ethernet (ravb) - support DMAC and EMAC blocks of
Gigabit-capable IP found on RZ/G2L SoC
- Intel 100G Ethernet
- support for eswitch offload of TC/OvS flow API, including
offload of GRE, VxLAN, Geneve tunneling
- support application device queues - ability to assign Rx and Tx
queues to application threads
- PTP and PPS (pulse-per-second) extensions
- Broadcom Ethernet (bnxt)
- devlink health reporting and device reload extensions
- Mellanox Ethernet (mlx5)
- offload macvlan interfaces
- support HW offload of TC rules involving OVS internal ports
- support HW-GRO and header/data split
- support application device queues
- Marvell OcteonTx2:
- add XDP support for PF
- add PTP support for VF
- Qualcomm Ethernet switch (qca8k): support for QCA8328
- Realtek Ethernet DSA switch (rtl8366rb)
- support bridge offload
- support STP, fast aging, disabling address learning
- support for Realtek RTL8365MB-VC, a 4+1 port 10M/100M/1GE switch
- Mellanox Ethernet/IB switch (mlxsw)
- multi-level qdisc hierarchy offload (e.g. RED, prio and shaping)
- offload root TBF qdisc as port shaper
- support multiple routing interface MAC address prefixes
- support for IP-in-IP with IPv6 underlay
- MediaTek WiFi (mt76)
- mt7921 - ASPM, 6GHz, SDIO and testmode support
- mt7915 - LED and TWT support
- Qualcomm WiFi (ath11k)
- include channel rx and tx time in survey dump statistics
- support for 80P80 and 160 MHz bandwidths
- support channel 2 in 6 GHz band
- spectral scan support for QCN9074
- support for rx decapsulation offload (data frames in 802.3
format)
- Qualcomm phone SoC WiFi (wcn36xx)
- enable Idle Mode Power Save (IMPS) to reduce power consumption
during idle
- Bluetooth driver support for MediaTek MT7922 and MT7921
- Enable support for AOSP Bluetooth extension in Qualcomm WCN399x and
Realtek 8822C/8852A
- Microsoft vNIC driver (mana)
- support hibernation and kexec
- Google vNIC driver (gve)
- support for jumbo frames
- implement Rx page reuse
Refactor:
- Make all writes to netdev->dev_addr go thru helpers, so that we can
add this address to the address rbtree and handle the updates
- Various TCP cleanups and optimizations including improvements to
CPU cache use
- Simplify the gnet_stats, Qdisc stats' handling and remove
qdisc->running sequence counter
- Driver changes and API updates to address devlink locking
deficiencies"
* tag 'net-next-for-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2122 commits)
Revert "net: avoid double accounting for pure zerocopy skbs"
selftests: net: add arp_ndisc_evict_nocarrier
net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter
net: arp: introduce arp_evict_nocarrier sysctl parameter
libbpf: Deprecate AF_XDP support
kbuild: Unify options for BTF generation for vmlinux and modules
selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
net: vmxnet3: remove multiple false checks in vmxnet3_ethtool.c
net: avoid double accounting for pure zerocopy skbs
tcp: rename sk_wmem_free_skb
netdevsim: fix uninit value in nsim_drv_configure_vfs()
selftests/bpf: Fix also no-alu32 strobemeta selftest
bpf: Add missing map_delete_elem method to bloom filter map
selftests/bpf: Add bloom map success test for userspace calls
bpf: Add alignment padding for "map_extra" + consolidate holes
bpf: Bloom filter map naming fixups
selftests/bpf: Add test cases for struct_ops prog
bpf: Add dummy BPF STRUCT_OPS for test purpose
...
Pull crypto updates from Herbert Xu:
"API:
- Delay boot-up self-test for built-in algorithms
Algorithms:
- Remove fallback path on arm64 as SIMD now runs with softirq off
Drivers:
- Add Keem Bay OCS ECC Driver"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (61 commits)
crypto: testmgr - fix wrong key length for pkcs1pad
crypto: pcrypt - Delay write to padata->info
crypto: ccp - Make use of the helper macro kthread_run()
crypto: sa2ul - Use the defined variable to clean code
crypto: s5p-sss - Add error handling in s5p_aes_probe()
crypto: keembay-ocs-ecc - Add Keem Bay OCS ECC Driver
dt-bindings: crypto: Add Keem Bay ECC bindings
crypto: ecc - Export additional helper functions
crypto: ecc - Move ecc.h to include/crypto/internal
crypto: engine - Add KPP Support to Crypto Engine
crypto: api - Do not create test larvals if manager is disabled
crypto: tcrypt - fix skcipher multi-buffer tests for 1420B blocks
hwrng: s390 - replace snprintf in show functions with sysfs_emit
crypto: octeontx2 - set assoclen in aead_do_fallback()
crypto: ccp - Fix whitespace in sev_cmd_buffer_len()
hwrng: mtk - Force runtime pm ops for sleep ops
crypto: testmgr - Only disable migration in crypto_disable_simd_for_test()
crypto: qat - share adf_enable_pf2vf_comms() from adf_pf2vf_msg.c
crypto: qat - extract send and wait from adf_vf2pf_request_version()
crypto: qat - add VF and PF wrappers to common send function
...
Pull audit updates from Paul Moore:
"Add some additional audit logging to capture the openat2() syscall
open_how struct info.
Previous variations of the open()/openat() syscalls allowed audit
admins to inspect the syscall args to get the information contained in
the new open_how struct used in openat2()"
* tag 'audit-pr-20211101' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: return early if the filter rule has a lower priority
audit: add OPENAT2 record to list "how" info
audit: add support for the openat2 syscall
audit: replace magic audit syscall class numbers with macros
lsm_audit: avoid overloading the "key" audit field
audit: Convert to SPDX identifier
audit: rename struct node to struct audit_node to prevent future name collisions
Pull selinux updates from Paul Moore:
- Add LSM/SELinux/Smack controls and auditing for io-uring.
As usual, the individual commit descriptions have more detail, but we
were basically missing two things which we're adding here:
+ establishment of a proper audit context so that auditing of
io-uring ops works similarly to how it does for syscalls (with
some io-uring additions because io-uring ops are *not* syscalls)
+ additional LSM hooks to enable access control points for some of
the more unusual io-uring features, e.g. credential overrides.
The additional audit callouts and LSM hooks were done in conjunction
with the io-uring folks, based on conversations and RFC patches
earlier in the year.
- Fixup the binder credential handling so that the proper credentials
are used in the LSM hooks; the commit description and the code
comment which is removed in these patches are helpful to understand
the background and why this is the proper fix.
- Enable SELinux genfscon policy support for securityfs, allowing
improved SELinux filesystem labeling for other subsystems which make
use of securityfs, e.g. IMA.
* tag 'selinux-pr-20211101' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
security: Return xattr name from security_dentry_init_security()
selinux: fix a sock regression in selinux_ip_postroute_compat()
binder: use cred instead of task for getsecid
binder: use cred instead of task for selinux checks
binder: use euid from cred instead of using task
LSM: Avoid warnings about potentially unused hook variables
selinux: fix all of the W=1 build warnings
selinux: make better use of the nf_hook_state passed to the NF hooks
selinux: fix race condition when computing ocontext SIDs
selinux: remove unneeded ipv6 hook wrappers
selinux: remove the SELinux lockdown implementation
selinux: enable genfscon labeling for securityfs
Smack: Brutalist io_uring support
selinux: add support for the io_uring access controls
lsm,io_uring: add LSM hooks to io_uring
io_uring: convert io_uring to the secure anon inode interface
fs: add anon_inode_getfile_secure() similar to anon_inode_getfd_secure()
audit: add filtering for io_uring records
audit,io_uring,io-wq: add some basic audit support to io_uring
audit: prepare audit_context for use in calling contexts beyond syscalls
Pull RCU updates from Paul McKenney:
- Miscellaneous fixes
- Torture-test updates for smp_call_function(), most notably improved
checking of module parameters.
- Tasks-trace RCU updates that fix a number of rare but important
race-condition bugs.
- Other torture-test updates, most notably better checking of module
parameters. In addition, rcutorture may once again be run on
CONFIG_PREEMPT_RT kernels.
- Torture-test scripting updates, most notably specifying the new
CONFIG_KCSAN_STRICT kconfig option rather than maintaining an
ever-changing list of individual KCSAN kconfig options.
* tag 'rcu.2021.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (46 commits)
rcu: Fix rcu_dynticks_curr_cpu_in_eqs() vs noinstr
rcu: Always inline rcu_dynticks_task*_{enter,exit}()
torture: Make kvm-remote.sh print size of downloaded tarball
torture: Allot 1G of memory for scftorture runs
tools/rcu: Add an extract-stall script
scftorture: Warn on individual scf_torture_init() error conditions
scftorture: Count reschedule IPIs
scftorture: Account for weight_resched when checking for all zeroes
scftorture: Shut down if nonsensical arguments given
scftorture: Allow zero weight to exclude an smp_call_function*() category
rcu: Avoid unneeded function call in rcu_read_unlock()
rcu-tasks: Update comments to cond_resched_tasks_rcu_qs()
rcu-tasks: Fix IPI failure handling in trc_wait_for_one_reader
rcu-tasks: Fix read-side primitives comment for call_rcu_tasks_trace
rcu-tasks: Clarify read side section info for rcu_tasks_rude GP primitives
rcu-tasks: Correct comparisons for CPU numbers in show_stalled_task_trace
rcu-tasks: Correct firstreport usage in check_all_holdout_tasks_trace
rcu-tasks: Fix s/rcu_add_holdout/trc_add_holdout/ typo in comment
rcu-tasks: Move RTGS_WAIT_CBS to beginning of rcu_tasks_kthread() loop
rcu-tasks: Fix s/instruction/instructions/ typo in comment
...
Pull tracing updates from Steven Rostedt:
- kprobes: Restructured stack unwinder to show properly on x86 when a
stack dump happens from a kretprobe callback.
- Fix to bootconfig parsing
- Have tracefs allow owner and group permissions by default (only
denying others). There's been pressure to allow non root to tracefs
in a controlled fashion, and using groups is probably the safest.
- Bootconfig memory managament updates.
- Bootconfig clean up to have the tools directory be less dependent on
changes in the kernel tree.
- Allow perf to be traced by function tracer.
- Rewrite of function graph tracer to be a callback from the function
tracer instead of having its own trampoline (this change will happen
on an arch by arch basis, and currently only x86_64 implements it).
- Allow multiple direct trampolines (bpf hooks to functions) be batched
together in one synchronization.
- Allow histogram triggers to add variables that can perform
calculations against the event's fields.
- Use the linker to determine architecture callbacks from the ftrace
trampoline to allow for proper parameter prototypes and prevent
warnings from the compiler.
- Extend histogram triggers to key off of variables.
- Have trace recursion use bit magic to determine preempt context over
if branches.
- Have trace recursion disable preemption as all use cases do anyway.
- Added testing for verification of tracing utilities.
- Various small clean ups and fixes.
* tag 'trace-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (101 commits)
tracing/histogram: Fix semicolon.cocci warnings
tracing/histogram: Fix documentation inline emphasis warning
tracing: Increase PERF_MAX_TRACE_SIZE to handle Sentinel1 and docker together
tracing: Show size of requested perf buffer
bootconfig: Initialize ret in xbc_parse_tree()
ftrace: do CPU checking after preemption disabled
ftrace: disable preemption when recursion locked
tracing/histogram: Document expression arithmetic and constants
tracing/histogram: Optimize division by a power of 2
tracing/histogram: Covert expr to const if both operands are constants
tracing/histogram: Simplify handling of .sym-offset in expressions
tracing: Fix operator precedence for hist triggers expression
tracing: Add division and multiplication support for hist triggers
tracing: Add support for creating hist trigger variables from literal
selftests/ftrace: Stop tracing while reading the trace file by default
MAINTAINERS: Update KPROBES and TRACING entries
test_kprobes: Move it from kernel/ to lib/
docs, kprobes: Remove invalid URL and add new reference
samples/kretprobes: Fix return value if register_kretprobe() failed
lib/bootconfig: Fix the xbc_get_info kerneldoc
...
Alexei Starovoitov says:
====================
pull-request: bpf-next 2021-11-01
We've added 181 non-merge commits during the last 28 day(s) which contain
a total of 280 files changed, 11791 insertions(+), 5879 deletions(-).
The main changes are:
1) Fix bpf verifier propagation of 64-bit bounds, from Alexei.
2) Parallelize bpf test_progs, from Yucong and Andrii.
3) Deprecate various libbpf apis including af_xdp, from Andrii, Hengqi, Magnus.
4) Improve bpf selftests on s390, from Ilya.
5) bloomfilter bpf map type, from Joanne.
6) Big improvements to JIT tests especially on Mips, from Johan.
7) Support kernel module function calls from bpf, from Kumar.
8) Support typeless and weak ksym in light skeleton, from Kumar.
9) Disallow unprivileged bpf by default, from Pawan.
10) BTF_KIND_DECL_TAG support, from Yonghong.
11) Various bpftool cleanups, from Quentin.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (181 commits)
libbpf: Deprecate AF_XDP support
kbuild: Unify options for BTF generation for vmlinux and modules
selftests/bpf: Add a testcase for 64-bit bounds propagation issue.
bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit.
bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off.
selftests/bpf: Fix also no-alu32 strobemeta selftest
bpf: Add missing map_delete_elem method to bloom filter map
selftests/bpf: Add bloom map success test for userspace calls
bpf: Add alignment padding for "map_extra" + consolidate holes
bpf: Bloom filter map naming fixups
selftests/bpf: Add test cases for struct_ops prog
bpf: Add dummy BPF STRUCT_OPS for test purpose
bpf: Factor out helpers for ctx access checking
bpf: Factor out a helper to prepare trampoline for struct_ops prog
selftests, bpf: Fix broken riscv build
riscv, libbpf: Add RISC-V (RV64) support to bpf_tracing.h
tools, build: Add RISC-V to HOSTARCH parsing
riscv, bpf: Increase the maximum number of iterations
selftests, bpf: Add one test for sockmap with strparser
selftests, bpf: Fix test_txmsg_ingress_parser error
...
====================
Link: https://lore.kernel.org/r/20211102013123.9005-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This tests the sysctl options for ARP/ND:
/net/ipv4/conf/<iface>/arp_evict_nocarrier
/net/ipv4/conf/all/arp_evict_nocarrier
/net/ipv6/conf/<iface>/ndisc_evict_nocarrier
/net/ipv6/conf/all/ndisc_evict_nocarrier
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In most situations the neighbor discovery cache should be cleared on a
NOCARRIER event which is currently done unconditionally. But for wireless
roams the neighbor discovery cache can and should remain intact since
the underlying network has not changed.
This patch introduces a sysctl option ndisc_evict_nocarrier which can
be disabled by a wireless supplicant during a roam. This allows packets
to be sent after a roam immediately without having to wait for
neighbor discovery.
A user reported roughly a 1 second delay after a roam before packets
could be sent out (note, on IPv4). This delay was due to the ARP
cache being cleared. During testing of this same scenario using IPv6
no delay was noticed, but regardless there is no reason to clear
the ndisc cache for wireless roams.
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This change introduces a new sysctl parameter, arp_evict_nocarrier.
When set (default) the ARP cache will be cleared on a NOCARRIER event.
This new option has been defaulted to '1' which maintains existing
behavior.
Clearing the ARP cache on NOCARRIER is relatively new, introduced by:
commit 859bd2ef1f
Author: David Ahern <dsahern@gmail.com>
Date: Thu Oct 11 20:33:49 2018 -0700
net: Evict neighbor entries on carrier down
The reason for this changes is to prevent the ARP cache from being
cleared when a wireless device roams. Specifically for wireless roams
the ARP cache should not be cleared because the underlying network has not
changed. Clearing the ARP cache in this case can introduce significant
delays sending out packets after a roam.
A user reported such a situation here:
https://lore.kernel.org/linux-wireless/CACsRnHWa47zpx3D1oDq9JYnZWniS8yBwW1h0WAVZ6vrbwL_S0w@mail.gmail.com/
After some investigation it was found that the kernel was holding onto
packets until ARP finished which resulted in this 1 second delay. It
was also found that the first ARP who-has was never responded to,
which is actually what caues the delay. This change is more or less
working around this behavior, but again, there is no reason to clear
the cache on a roam anyways.
As for the unanswered who-has, we know the packet made it OTA since
it was seen while monitoring. Why it never received a response is
unknown. In any case, since this is a problem on the AP side of things
all that can be done is to work around it until it is solved.
Some background on testing/reproducing the packet delay:
Hardware:
- 2 access points configured for Fast BSS Transition (Though I don't
see why regular reassociation wouldn't have the same behavior)
- Wireless station running IWD as supplicant
- A device on network able to respond to pings (I used one of the APs)
Procedure:
- Connect to first AP
- Ping once to establish an ARP entry
- Start a tcpdump
- Roam to second AP
- Wait for operstate UP event, and note the timestamp
- Start pinging
Results:
Below is the tcpdump after UP. It was recorded the interface went UP at
10:42:01.432875.
10:42:01.461871 ARP, Request who-has 192.168.254.1 tell 192.168.254.71, length 28
10:42:02.497976 ARP, Request who-has 192.168.254.1 tell 192.168.254.71, length 28
10:42:02.507162 ARP, Reply 192.168.254.1 is-at ac:86:74:55:b0:20, length 46
10:42:02.507185 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 1, length 64
10:42:02.507205 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 2, length 64
10:42:02.507212 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 3, length 64
10:42:02.507219 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 4, length 64
10:42:02.507225 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 5, length 64
10:42:02.507232 IP 192.168.254.71 > 192.168.254.1: ICMP echo request, id 52792, seq 6, length 64
10:42:02.515373 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 1, length 64
10:42:02.521399 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 2, length 64
10:42:02.521612 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 3, length 64
10:42:02.521941 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 4, length 64
10:42:02.522419 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 5, length 64
10:42:02.523085 IP 192.168.254.1 > 192.168.254.71: ICMP echo reply, id 52792, seq 6, length 64
You can see the first ARP who-has went out very quickly after UP, but
was never responded to. Nearly a second later the kernel retries and
gets a response. Only then do the ping packets go out. If an ARP entry
is manually added prior to UP (after the cache is cleared) it is seen
that the first ping is never responded to, so its not only an issue with
ARP but with data packets in general.
As mentioned prior, the wireless interface was also monitored to verify
the ping/ARP packet made it OTA which was observed to be true.
Signed-off-by: James Prestwood <prestwoj@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pull hwmon updates from Guenter Roeck:
"New driver:
- Maxim MAX6620
Notable functional enhancements:
- Add Asus WMI support to nct6775 driver, and list boards supporting
it
- Move TMP461 support from tm401 driver to lm90 driver
- Add support for fanX_min, fanX_max and fanX_target to dell-smm
driver, and clean it up while doing so
- Extend mlxreg-fan driver to support multiple cooling devices and
multiple PWM channels. Also increase number of supported fan
tachometers.
- Add a new customer ID (for ASRock) to nct6683 driver
- Make temperature/voltage sensors on nct7802 configurable
- Add mfg_id debugfs entry to pmbus/ibm-cffps driver
- Support configurable sense resistor values in pmbus/lm25066, and
fix various coefficients
- Use generic notification mechanism in raspberrypi driver
Notable cleanups:
- Convert various devicetree bindings to dtschema, and add missing
bindings
- Convert i5500_temp and tmp103 drivers to
devm_hwmon_device_register_with_info
- Clean up non-bool "valid" data fields
- Improve devicetree configurability for tmp421 driver"
* tag 'hwmon-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (73 commits)
hwmon: (nct7802) Add of_node_put() before return
hwmon: (tmp401) Drop support for TMP461
hwmon: (lm90) Add basic support for TI TMP461
hwmon: (lm90) Introduce flag indicating extended temperature support
hwmon: (nct6775) add ProArt X570-CREATOR WIFI.
hwmon: (nct7802) Make temperature/voltage sensors configurable
dt-bindings: hwmon: Add nct7802 bindings
hwmon: (dell-smm) Speed up setting of fan speed
hwmon: (dell-smm) Add comment explaining usage of i8k_config_data[]
hwmon: (dell-smm) Return -ENOIOCTLCMD instead of -EINVAL
hwmon: (dell-smm) Use strscpy_pad()
hwmon: (dell-smm) Sort includes in alphabetical order
hwmon: (tmp421) Add of_node_put() before return
hwmon: (max31722) Warn about failure to put device in stand-by in .remove()
hwmon: (acpi_power_meter) Use acpi_bus_get_acpi_device()
hwmon: (dell-smm) Add support for fanX_min, fanX_max and fanX_target
dt-bindings: hwmon: allow specifying channels for tmp421
hwmon: (tmp421) ignore non-channel related DT nodes
hwmon: (tmp421) update documentation
hwmon: (tmp421) support HWMON_T_ENABLE
...
Pull spi updates from Mark Brown:
"This is quite a quiet release for SPI, there's been a bit of cleanup
to the core from Uwe but nothing functionality wise.
We have added several new drivers, Cadence XSPI, Ingenic JZ47xx,
Qualcomm SC7280 and SC7180 and Xilinx Versal OSPI"
* tag 'spi-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (41 commits)
spi: Convert NXP flexspi to json schema
spi: spi-geni-qcom: Add support for GPI dma
spi: fsi: Fix contention in the FSI2SPI engine
spi: spi-rpc-if: Check return value of rpcif_sw_init()
spi: tegra210-quad: Put device into suspend on driver removal
spi: tegra20-slink: Put device into suspend on driver removal
spi: bcm-qspi: Fix missing clk_disable_unprepare() on error in bcm_qspi_probe()
spi: at91-usart: replacing legacy gpio interface for gpiod
spi: replace snprintf in show functions with sysfs_emit
spi: cadence: Add of_node_put() before return
spi: orion: Add of_node_put() before goto
spi: cadence-quadspi: fix dma_unmap_single() call
spi: tegra20: fix build with CONFIG_PM_SLEEP=n
spi: bcm-qspi: add support for 3-wire mode for half duplex transfer
spi: bcm-qspi: Add mspi spcr3 32/64-bits xfer mode
spi: Make several public functions private to spi.c
spi: Reorder functions to simplify the next commit
spi: Remove unused function spi_busnum_to_master()
spi: Move comment about chipselect check to the right place
spi: fsi: Print status on error
...
Pull regulator updates from Mark Brown:
"Thanks to the removal of the unused TPS80021 driver the regulator
updates for this cycle actually have a negative diffstat.
Otherwise it's been quite a quiet release, lots of fixes and small
improvements with the biggest individual changes being several
conversions of DT bindings to YAML format"
* tag 'regulator-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (34 commits)
regulator: Don't error out fixed regulator in regulator_sync_voltage()
regulator: tps80031: Remove driver
regulator: Fix SY7636A breakage
regulator: uniphier: Add binding for NX1 SoC
regulator: uniphier: Add USB-VBUS compatible string for NX1 SoC
regulator: qcom,rpmh: Add compatible for PM6350
regulator: qcom-rpmh: Add PM6350 regulators
regulator: sy7636a: Remove requirement on sy7636a mfd
regulator: tps62360: replacing legacy gpio interface for gpiod
regulator: lp872x: Remove lp872x_dvs_state
regulator: lp872x: replacing legacy gpio interface for gpiod
regulator: dt-bindings: samsung,s5m8767: convert to dtschema
regulator: dt-bindings: samsung,s2mpa01: convert to dtschema
regulator: dt-bindings: samsung,s2m: convert to dtschema
dt-bindings: clock: samsung,s2mps11: convert to dtschema
regulator: dt-bindings: samsung,s5m8767: correct s5m8767,pmic-buck-default-dvs-idx property
regulator: s5m8767: do not use reset value as DVS voltage if GPIO DVS is disabled
regulator: dt-bindings: maxim,max8973: convert to dtschema
regulator: dt-bindings: maxim,max8997: convert to dtschema
regulator: dt-bindings: maxim,max8952: convert to dtschema
...
Pull regmap update from Mark Brown:
"A single change to use the maximum transfer and message sizes
advertised by SPI controllers to configure limits within the
regmap core, ensuring better interoperation"
* tag 'regmap-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: spi: Set regmap max raw r/w from max_transfer_size
Pull mailbox updates from Jassi Brar:
"qcom:
- add support for qcm2290
- consolidate msm8994 type apcs_data
mtk:
- fix clock id usage
apple:
- add driver for ASC/M3 controllers
pcc:
- reorganise PCC pcc_mbox_request_channel
- add support for PCCT extended PCC subspaces
misc:
- make use of devm_platform_ioremap_resource()
- change Altera, PCC and Apple mailbox maintainers"
* tag 'mailbox-v5.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration: (38 commits)
mailbox: imx: support i.MX8ULP S4 MU
dt-bindings: mailbox: imx-mu: add i.MX8ULP S400 MU support
ACPI/PCC: Add maintainer for PCC mailbox driver
mailbox: pcc: Move bulk of PCCT parsing into pcc_mbox_probe
mailbox: pcc: Add support for PCCT extended PCC subspaces(type 3/4)
mailbox: pcc: Drop handling invalid bit-width in {read,write}_register
mailbox: pcc: Avoid accessing PCCT table in pcc_send_data and pcc_mbox_irq
mailbox: pcc: Add PCC register bundle and associated accessor functions
mailbox: pcc: Rename doorbell ack to platform interrupt ack register
mailbox: pcc: Use PCC mailbox channel pointer instead of standard
mailbox: pcc: Add pcc_mbox_chan structure to hold shared memory region info
mailbox: pcc: Consolidate subspace doorbell register parsing
mailbox: pcc: Consolidate subspace interrupt information parsing
mailbox: pcc: Refactor all PCC channel information into a structure
mailbox: pcc: Fix kernel doc warnings
mailbox: apple: Add driver for Apple mailboxes
dt-bindings: mailbox: Add Apple mailbox bindings
MAINTAINERS: Add Apple mailbox files
mailbox: mtk-cmdq: Fix local clock ID usage
mailbox: mtk-cmdq: Validate alias_id on probe
...
Pull MMC and MEMSTICK updates from Ulf Hansson:
"MMC core:
- Update maintainer and URL for the mmc-utils
- Set default label for slot-gpio in case of no con-id
- Convert MMC card DT bindings to a schema
- Add optional host specific tuning support for eMMC HS400
- Add error handling of add_disk()
MMC host:
- mtk-sd: Add host specific tuning support for eMMC HS400
- mtk-sd: Make DMA handling more robust
- dw_mmc: Prevent hangs for some data writes
- dw_mmc: Move away from using the ->init_card() callback
- mxs-mmc: Manage the regulator in the error path and in ->remove()
- sdhci-cadence: Add support for the Microchip MPFS variant
- sdhci-esdhc-imx: Add support for the NXP S32G2 variant
- sdhci-of-arasan: Add support for the Intel Thunder Bay variant
- sdhci-omap: Prepare to support more SoCs
- sdhci-omap: Add support for omap3 and omap4 variants
- sdhci-omap: Add support for power management
- sdhci-omap: Add support for system wakeups
- sdhci-msm: Add support for the msm8226 variant
- sdhci-sprd: Verify that the DLL locks according to spec
MEMSTICK:
- Add error handling of add_disk()
- A couple of small fixes and improvements"
* tag 'mmc-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (60 commits)
docs: mmc: update maintainer name and URL
mmc: dw_mmc: exynos: Fix spelling mistake "candiates" -> candidates
MAINTAINERS: drop obsolete file pattern in SDHCI DRIVER section
mmc: sdhci-esdhc-imx: add NXP S32G2 support
dt-bindings: mmc: fsl-imx-esdhc: add NXP S32G2 support
mmc: dw_mmc: Drop use of ->init_card() callback
mmc: sdhci-omap: Fix build if CONFIG_PM_SLEEP is not set
mmc: sdhci-omap: Remove forward declaration of sdhci_omap_context_save()
memstick: r592: Fix a UAF bug when removing the driver
mmc: mxs-mmc: disable regulator on error and in the remove function
mmc: sdhci-omap: Configure optional wakeirq
mmc: sdhci-omap: Allow SDIO card power off and enable aggressive PM
mmc: sdhci-omap: Implement PM runtime functions
mmc: sdhci-omap: Add omap_offset to support omap3 and earlier
mmc: sdhci-omap: Handle voltages to add support omap4
dt-bindings: sdhci-omap: Update binding for legacy SoCs
mmc: sdhci-pci: Remove dead code (rst_n_gpio et al)
mmc: sdhci-pci: Remove dead code (cd_gpio, cd_irq et al)
mmc: sdhci-pci: Remove dead code (struct sdhci_pci_data et al)
mmc: sdhci: Remove unused prototype declaration in the header
...
Pull IPMI driver updates from Corey Minyard:
"A new type of low-level IPMI driver is added for direct communication
over the IPMI message bus without a BMC between the driver and the
bus.
Other than that, lots of little bug fixes and enhancements"
* tag 'for-linus-5.16-1' of https://github.com/cminyard/linux-ipmi:
ipmi: kcs_bmc: Fix a memory leak in the error handling path of 'kcs_bmc_serio_add_device()'
char: ipmi: replace snprintf in show functions with sysfs_emit
ipmi: ipmb: fix dependencies to eliminate build error
ipmi:ipmb: Add OF support
ipmi: bt: Add ast2600 compatible string
ipmi: bt-bmc: Use registers directly
ipmi: ipmb: Fix off-by-one size check on rcvlen
ipmi:ssif: Use depends on, not select, for I2C
ipmi: Add docs for the IPMI IPMB driver
ipmi: Add docs for IPMB direct addressing
ipmi:ipmb: Add initial support for IPMI over IPMB
ipmi: Add support for IPMB direct messages
ipmi: Export ipmb_checksum()
ipmi: Fix a typo
ipmi: Check error code before processing BMC response
ipmi:devintf: Return a proper error when recv buffer too small
ipmi: Disable some operations during a panic
ipmi:watchdog: Set panic count to proper value on a panic
Pull LED updates from Pavel Machek:
"Johannes pointed out that locking is still problematic with triggers
list, attempt to solve that by using RCU"
* tag 'leds-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds:
leds: trigger: Disable CPU trigger on PREEMPT_RT
leds: trigger: use RCU to protect the led_cdevs list
led-class-flash: fix -Wrestrict warning
Pull media updates from Mauro Carvalho Chehab:
- New driver for SK Hynix Hi-846 8M pixel camera
- New driver for the ov13b10 camera
- New driver for Renesas R-Car ISP
- mtk-vcodec gained support for version 2 of decoder firmware ABI
- The legacy sir_ir driver got removed
- videobuf2: the vb2_mem_ops kAPI had some improvements
- lots of cleanups, fixes and new features at device drivers
* tag 'media/v5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (328 commits)
media: venus: core: Add sdm660 DT compatible and resource struct
media: dt-bindings: media: venus: Add sdm660 dt schema
media: venus: vdec: decoded picture buffer handling during reconfig sequence
media: venus: Handle fatal errors during encoding and decoding
media: venus: helpers: Add helper to mark fatal vb2 error
media: venus: hfi: Check for sys error on session hfi functions
media: venus: Make sys_error flag an atomic bitops
media: venus: venc: Use pmruntime autosuspend
media: allegro: write vui parameters for HEVC
media: allegro: nal-hevc: implement generator for vui
media: allegro: write correct colorspace into SPS
media: allegro: extract nal value lookup functions to header
media: allegro: correctly scale the bit rate in SPS
media: allegro: remove external QP table
media: allegro: fix row and column in response message
media: allegro: add control to disable encoder buffer
media: allegro: add encoder buffer support
media: allegro: add pm_runtime support
media: allegro: lookup VCU settings
media: allegro: fix module removal if initialization failed
...
Deprecate AF_XDP support in libbpf ([0]). This has been moved to
libxdp as it is a better fit for that library. The AF_XDP support only
uses the public libbpf functions and can therefore just use libbpf as
a library from libxdp. The libxdp APIs are exactly the same so it
should just be linking with libxdp instead of libbpf for the AF_XDP
functionality. If not, please submit a bug report. Linking with both
libraries is supported but make sure you link in the correct order so
that the new functions in libxdp are used instead of the deprecated
ones in libbpf.
Libxdp can be found at https://github.com/xdp-project/xdp-tools.
[0] Closes: https://github.com/libbpf/libbpf/issues/270
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20211029090111.4733-1-magnus.karlsson@gmail.com
./test_progs-no_alu32 -vv -t twfw
Before the 64-bit_into_32-bit fix:
19: (25) if r1 > 0x3f goto pc+6
R1_w=inv(id=0,umax_value=63,var_off=(0x0; 0xff),s32_max_value=255,u32_max_value=255)
and eventually:
invalid access to map value, value_size=8 off=7 size=8
R6 max value is outside of the allowed memory range
libbpf: failed to load object 'no_alu32/twfw.o'
After the fix:
19: (25) if r1 > 0x3f goto pc+6
R1_w=inv(id=0,umax_value=63,var_off=(0x0; 0x3f))
verif_twfw:OK
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211101222153.78759-3-alexei.starovoitov@gmail.com
Before this fix:
166: (b5) if r2 <= 0x1 goto pc+22
from 166 to 189: R2=invP(id=1,umax_value=1,var_off=(0x0; 0xffffffff))
After this fix:
166: (b5) if r2 <= 0x1 goto pc+22
from 166 to 189: R2=invP(id=1,umax_value=1,var_off=(0x0; 0x1))
While processing BPF_JLE the reg_set_min_max() would set true_reg->umax_value = 1
and call __reg_combine_64_into_32(true_reg).
Without the fix it would not pass the condition:
if (__reg64_bound_u32(reg->umin_value) && __reg64_bound_u32(reg->umax_value))
since umin_value == 0 at this point.
Before commit 10bf4e8316 the umin was incorrectly ingored.
The commit 10bf4e8316 fixed the correctness issue, but pessimized
propagation of 64-bit min max into 32-bit min max and corresponding var_off.
Fixes: 10bf4e8316 ("bpf: Fix propagation of 32 bit unsigned bounds from 64 bit bounds")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20211101222153.78759-1-alexei.starovoitov@gmail.com
Pull smack updates from Casey Schaufler:
"Multiple corrections to smackfs:
- a change for overlayfs support that corrects the initial attributes
on created files
- code clean-up for netlabel processing
- several fixes in smackfs for a variety of reasons
- Errors reported by W=1 have been addressed
All told, nothing challenging"
* tag 'Smack-for-5.16' of https://github.com/cschaufler/smack-next:
smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi
smackfs: use __GFP_NOFAIL for smk_cipso_doi()
Smack: fix W=1 build warnings
smack: remove duplicated hook function
Smack:- Use overlay inode label in smack_inode_copy_up()
smack: Guard smack_ipv6_lock definition within a SMACK_IPV6_PORT_LABELING block
smackfs: Fix use-after-free in netlbl_catmap_walk()
Pull fallthrough fixes from Gustavo A. R. Silva:
"Fix some fall-through warnings when building with Clang and
-Wimplicit-fallthrough"
* tag 'fallthrough-fixes-clang-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
pcmcia: db1xxx_ss: Fix fall-through warning for Clang
MIPS: Fix fall-through warnings for Clang
scsi: st: Fix fall-through warning for Clang
Pull hardening fixes and cleanups from Gustavo A. R. Silva:
"Various hardening fixes and cleanups that I've been collecting during
the last development cycle:
Fix -Wcast-function-type error:
- firewire: Remove function callback casts (Oscar Carter)
Fix application of sizeof operator:
- firmware/psci: fix application of sizeof to pointer (jing yangyang)
Replace open coded instances with size_t saturating arithmetic
helpers:
- assoc_array: Avoid open coded arithmetic in allocator arguments
(Len Baker)
- writeback: prefer struct_size over open coded arithmetic (Len
Baker)
- aio: Prefer struct_size over open coded arithmetic (Len Baker)
- dmaengine: pxa_dma: Prefer struct_size over open coded arithmetic
(Len Baker)
Flexible array transformation:
- KVM: PPC: Replace zero-length array with flexible array member (Len
Baker)
Use 2-factor argument multiplication form:
- nouveau/svm: Use kvcalloc() instead of kvzalloc() (Gustavo A. R.
Silva)
- xfs: Use kvcalloc() instead of kvzalloc() (Gustavo A. R. Silva)"
* tag 'kspp-misc-fixes-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
firewire: Remove function callback casts
nouveau/svm: Use kvcalloc() instead of kvzalloc()
firmware/psci: fix application of sizeof to pointer
dmaengine: pxa_dma: Prefer struct_size over open coded arithmetic
KVM: PPC: Replace zero-length array with flexible array member
aio: Prefer struct_size over open coded arithmetic
writeback: prefer struct_size over open coded arithmetic
xfs: Use kvcalloc() instead of kvzalloc()
assoc_array: Avoid open coded arithmetic in allocator arguments
Pull seccomp updates from Kees Cook:
"These are x86-specific, but I carried these since they're also
seccomp-specific.
This flips the defaults for spec_store_bypass_disable and
spectre_v2_user from "seccomp" to "prctl", as enough time has passed
to allow system owners to have updated the defensive stances of their
various workloads, and it's long overdue to unpessimize seccomp
threads.
Extensive rationale and details are in Andrea's main patch.
Summary:
- set spec_store_bypass_disable & spectre_v2_user to prctl (Andrea Arcangeli)"
* tag 'seccomp-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
x86: deduplicate the spectre_v2_user documentation
x86: change default to spec_store_bypass_disable=prctl spectre_v2_user=prctl
Pull overflow updates from Kees Cook:
"The end goal of the current buffer overflow detection work[0] is to
gain full compile-time and run-time coverage of all detectable buffer
overflows seen via array indexing or memcpy(), memmove(), and
memset(). The str*() family of functions already have full coverage.
While much of the work for these changes have been on-going for many
releases (i.e. 0-element and 1-element array replacements, as well as
avoiding false positives and fixing discovered overflows[1]), this
series contains the foundational elements of several related buffer
overflow detection improvements by providing new common helpers and
FORTIFY_SOURCE changes needed to gain the introspection required for
compiler visibility into array sizes. Also included are a handful of
already Acked instances using the helpers (or related clean-ups), with
many more waiting at the ready to be taken via subsystem-specific
trees[2].
The new helpers are:
- struct_group() for gaining struct member range introspection
- memset_after() and memset_startat() for clearing to the end of
structures
- DECLARE_FLEX_ARRAY() for using flex arrays in unions or alone in
structs
Also included is the beginning of the refactoring of FORTIFY_SOURCE to
support memcpy() introspection, fix missing and regressed coverage
under GCC, and to prepare to fix the currently broken Clang support.
Finishing this work is part of the larger series[0], but depends on
all the false positives and buffer overflow bug fixes to have landed
already and those that depend on this series to land.
As part of the FORTIFY_SOURCE refactoring, a set of both a
compile-time and run-time tests are added for FORTIFY_SOURCE and the
mem*()-family functions respectively. The compile time tests have
found a legitimate (though corner-case) bug[6] already.
Please note that the appearance of "panic" and "BUG" in the
FORTIFY_SOURCE refactoring are the result of relocating existing code,
and no new use of those code-paths are expected nor desired.
Finally, there are two tree-wide conversions for 0-element arrays and
flexible array unions to gain sane compiler introspection coverage
that result in no known object code differences.
After this series (and the changes that have now landed via netdev and
usb), we are very close to finally being able to build with
-Warray-bounds and -Wzero-length-bounds.
However, due corner cases in GCC[3] and Clang[4], I have not included
the last two patches that turn on these options, as I don't want to
introduce any known warnings to the build. Hopefully these can be
solved soon"
Link: https://lore.kernel.org/lkml/20210818060533.3569517-1-keescook@chromium.org/ [0]
Link: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/?qt=grep&q=FORTIFY_SOURCE [1]
Link: https://lore.kernel.org/lkml/202108220107.3E26FE6C9C@keescook/ [2]
Link: https://lore.kernel.org/lkml/3ab153ec-2798-da4c-f7b1-81b0ac8b0c5b@roeck-us.net/ [3]
Link: https://bugs.llvm.org/show_bug.cgi?id=51682 [4]
Link: https://lore.kernel.org/lkml/202109051257.29B29745C0@keescook/ [5]
Link: https://lore.kernel.org/lkml/20211020200039.170424-1-keescook@chromium.org/ [6]
* tag 'overflow-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (30 commits)
fortify: strlen: Avoid shadowing previous locals
compiler-gcc.h: Define __SANITIZE_ADDRESS__ under hwaddress sanitizer
treewide: Replace 0-element memcpy() destinations with flexible arrays
treewide: Replace open-coded flex arrays in unions
stddef: Introduce DECLARE_FLEX_ARRAY() helper
btrfs: Use memset_startat() to clear end of struct
string.h: Introduce memset_startat() for wiping trailing members and padding
xfrm: Use memset_after() to clear padding
string.h: Introduce memset_after() for wiping trailing members/padding
lib: Introduce CONFIG_MEMCPY_KUNIT_TEST
fortify: Add compile-time FORTIFY_SOURCE tests
fortify: Allow strlen() and strnlen() to pass compile-time known lengths
fortify: Prepare to improve strnlen() and strlen() warnings
fortify: Fix dropped strcpy() compile-time write overflow check
fortify: Explicitly disable Clang support
fortify: Move remaining fortify helpers into fortify-string.h
lib/string: Move helper functions out of string.c
compiler_types.h: Remove __compiletime_object_size()
cm4000_cs: Use struct_group() to zero struct cm4000_dev region
can: flexcan: Use struct_group() to zero struct flexcan_regs regions
...
Pull compiler hardening updates from Kees Cook:
"These are various compiler-related hardening feature updates. Notable
is the addition of an explicit limited rationale for, and deprecation
schedule of, gcc-plugins.
gcc-plugins:
- remove support for GCC 4.9 and older (Ard Biesheuvel)
- remove duplicate include in gcc-common.h (Ye Guojin)
- Explicitly document purpose and deprecation schedule (Kees Cook)
- Remove cyc_complexity (Kees Cook)
instrumentation:
- Avoid harmless Clang option under CONFIG_INIT_STACK_ALL_ZERO (Kees Cook)
Clang LTO:
- kallsyms: strip LTO suffixes from static functions (Nick Desaulniers)"
* tag 'hardening-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
gcc-plugins: remove duplicate include in gcc-common.h
gcc-plugins: Remove cyc_complexity
gcc-plugins: Explicitly document purpose and deprecation schedule
kallsyms: strip LTO suffixes from static functions
gcc-plugins: remove support for GCC 4.9 and older
hardening: Avoid harmless Clang option under CONFIG_INIT_STACK_ALL_ZERO
