Commit 48ef50fa86 added a test on tb_sa[MACSEC_SA_ATTR_PN], but
nothing guarantees that it's not NULL at this point. The same code was
added to macsec_add_txsa, but there it's not a problem because
validate_add_txsa checks that the MACSEC_SA_ATTR_PN attribute is
present.
Note: it's not possible to reproduce with iproute, because iproute
doesn't allow creating an SA without specifying the PN.
Fixes: 48ef50fa86 ("macsec: Netlink support of XPN cipher suites (IEEE 802.1AEbw)")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=208315
Reported-by: Frantisek Sumsal <fsumsal@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace 'the the' with 'the' in the comment.
Signed-off-by: Slark Xiao <slark_xiao@163.com>
Acked-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Lorenzo Bianconi says:
====================
mtk_eth_soc: add xdp support
Introduce XDP support for mtk_eth_soc driver if rx hwlro is not
enabled in the chipset (e.g. mt7986).
Supported XDP verdicts:
- XDP_PASS
- XDP_DROP
- XDP_REDIRECT
- XDP_TX
- ndo_xdp_xmit
Rely on page_pool allocator for single page buffers in order to keep
them dma mapped and add skb recycling support.
Changes since v3:
- add missing rcu_read_lock()/rcu_read_unlock()
- introduce mtk_page_pool_enabled() utility routine
Changes since v2:
- fix leftover sparse warning
- add page_pool ethtool stats
Changes since v1:
- do not allocate mtk_xdp_stats array on the stack in mtk_rx_poll
- add rcu annotation to bpf program
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce support for the page_pool stats API into mtk_eth_soc driver.
Report page_pool stats through ethtool.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce XDP support for XDP_TX verdict and ndo_xdp_xmit function
pointer.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce basic XDP support to mtk_eth_soc driver.
Supported XDP verdicts:
- XDP_PASS
- XDP_DROP
- XDP_REDIRECT
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rely on page_pool allocator for single page buffers in order to keep
them dma mapped and add skb recycling support.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since commit 1033990ac5 ("sctp: implement memory accounting on tx path"),
SCTP has supported memory accounting on tx path where 'sctp_wmem' is used
by sk_wmem_schedule(). So we should fix the description for this option in
ip-sysctl.rst accordingly.
v1->v2:
- Improve the description as Marcelo suggested.
Fixes: 1033990ac5 ("sctp: implement memory accounting on tx path")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tls_device_down takes a reference on all contexts it's going to move to
the degraded state (software fallback). If sk_destruct runs afterwards,
it can reduce the reference counter back to 1 and return early without
destroying the context. Then tls_device_down will release the reference
it took and call tls_device_free_ctx. However, the context will still
stay in tls_device_down_list forever. The list will contain an item,
memory for which is released, making a memory corruption possible.
Fix the above bug by properly removing the context from all lists before
any call to tls_device_free_ctx.
Fixes: 3740651bf7 ("tls: Fix context leak on tls_device_down")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
enough in order for the LBR MSR access to not #GP
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Merge tag 'perf_urgent_for_v5.19_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Borislav Petkov:
- Reorganize the perf LBR init code so that a TSX quirk is applied
early enough in order for the LBR MSR access to not #GP
* tag 'perf_urgent_for_v5.19_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/lbr: Fix unchecked MSR access error on HSW
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Merge tag 'sched_urgent_for_v5.19_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Borislav Petkov:
"A single fix to correct a wrong BUG_ON() condition for deboosted
tasks"
* tag 'sched_urgent_for_v5.19_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Fix BUG_ON condition for deboosted tasks
work if even needed, at all).
- Prevent return thunks patching of the LKDTM modules as it is not needed there
- Avoid writing the SPEC_CTRL MSR on every kernel entry on eIBRS parts
- Enhance error output of apply_returns() when it fails to patch a return thunk
- A sparse fix to the sev-guest module
- Protect EFI fw calls by issuing an IBPB on AMD
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Merge tag 'x86_urgent_for_v5.19_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
"A couple more retbleed fallout fixes.
It looks like their urgency is decreasing so it seems like we've
managed to catch whatever snafus the limited -rc testing has exposed.
Maybe we're getting ready... :)
- Make retbleed mitigations 64-bit only (32-bit will need a bit more
work if even needed, at all).
- Prevent return thunks patching of the LKDTM modules as it is not
needed there
- Avoid writing the SPEC_CTRL MSR on every kernel entry on eIBRS
parts
- Enhance error output of apply_returns() when it fails to patch a
return thunk
- A sparse fix to the sev-guest module
- Protect EFI fw calls by issuing an IBPB on AMD"
* tag 'x86_urgent_for_v5.19_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/speculation: Make all RETbleed mitigations 64-bit only
lkdtm: Disable return thunks in rodata.c
x86/bugs: Warn when "ibrs" mitigation is selected on Enhanced IBRS parts
x86/alternative: Report missing return thunk details
virt: sev-guest: Pass the appropriate argument type to iounmap()
x86/amd: Use IBPB for firmware calls
driver.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"One more fix to set the correct IO mapping for a clk gate in the
lan966x driver"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: lan966x: Fix the lan966x clock gate register address
* Fix use of sched_setaffinity in selftests
* Sync kernel headers to tools
* Fix KVM_STATS_UNIT_MAX
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
- Check for invalid flags to KVM_CAP_X86_USER_SPACE_MSR
- Fix use of sched_setaffinity in selftests
- Sync kernel headers to tools
- Fix KVM_STATS_UNIT_MAX
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Protect the unused bits in MSR exiting flags
tools headers UAPI: Sync linux/kvm.h with the kernel sources
KVM: selftests: Fix target thread to be migrated in rseq_test
KVM: stats: Fix value for KVM_STATS_UNIT_MAX for boolean stats
The mitigations for RETBleed are currently ineffective on x86_32 since
entry_32.S does not use the required macros. However, for an x86_32
target, the kconfig symbols for them are still enabled by default and
/sys/devices/system/cpu/vulnerabilities/retbleed will wrongly report
that mitigations are in place.
Make all of these symbols depend on X86_64, and only enable RETHUNK by
default on X86_64.
Fixes: f43b9876e8 ("x86/retbleed: Add fine grained Kconfig knobs")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/YtwSR3NNsWp1ohfV@decadent.org.uk
Tony Nguyen says:
====================
100GbE Intel Wired LAN Driver Updates 2022-07-21
This series contains updates to ice driver only.
Karol adds implementation for GNSS write; data is written to the GNSS
module through TTY device using u-blox UBX protocol.
* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
ice: add write functionality for GNSS TTY
ice: add i2c write command
====================
Link: https://lore.kernel.org/r/20220721202842.3276257-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The current code allows for VXLAN and GENEVE to inherit the TOS
respective the TTL when skb-protocol is ETH_P_IP or ETH_P_IPV6.
However when the payload is VLAN encapsulated, then this inheriting
does not work, because the visible skb-protocol is of type
ETH_P_8021Q or ETH_P_8021AD.
Instead of skb->protocol use skb_protocol().
Signed-off-by: Matthias May <matthias.may@westermo.com>
Link: https://lore.kernel.org/r/20220721202718.10092-1-matthias.may@westermo.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Justin Chen says:
====================
net: usb: ax88179_178a: improvements and bug fixes
Power management was partially broken. There were two issues when dropping
into a sleep state.
1. Resume was not doing a fully HW restore. Only a partial restore. This
lead to a couple things being broken on resume. One of them being tcp rx.
2. wolopt was not being restored properly on resume.
Also did some general improvements and clean up to make it easier to fix
the issues mentioned above.
====================
Link: https://lore.kernel.org/r/1658363296-15734-1-git-send-email-justinpopo6@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Check if wol is supported on reset instead of everytime get_wol
is called.
- Save wolopts in private data instead of relying on the HW to save it.
- Defer enabling WoL until suspend instead of enabling it everytime
set_wol is called.
Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
We need more space to save WoL context. So lets allocate memory
for ax88179_data instead of using struct usbnet data field which
only supports 5 words. We continue to use the struct usbnet data
field for multicast filters. However since we no longer have the
private data stored there, we can shift it to the beginning.
Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The hardware state was only partially restored, which meant certain
functionality was broken on resume. Do a full HW reset on resume to
fix this.
Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Instead of passing in_pm flags all over the place, use the private
struct to handle in_pm mode.
Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Bind and reset are basically doing the same thing. Remove the duplicate
code and have bind call into reset.
Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Add support for IM Networks PID 0x3568
- Add support for BCM4349B1
- Add support for CYW55572
- Add support for MT7922 VID/PID 0489/e0e2
- Add support for Realtek RTL8852C
- Initial support for Isochronous Channels/ISO sockets
- Remove HCI_QUIRK_BROKEN_ERR_DATA_REPORTING quirk
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Merge tag 'for-net-next-2022-07-22' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Luiz Augusto von Dentz says:
====================
bluetooth-next pull request for net-next:
- Add support for IM Networks PID 0x3568
- Add support for BCM4349B1
- Add support for CYW55572
- Add support for MT7922 VID/PID 0489/e0e2
- Add support for Realtek RTL8852C
- Initial support for Isochronous Channels/ISO sockets
- Remove HCI_QUIRK_BROKEN_ERR_DATA_REPORTING quirk
* tag 'for-net-next-2022-07-22' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (58 commits)
Bluetooth: btusb: Detect if an ACL packet is in fact an ISO packet
Bluetooth: btusb: Add support for ISO packets
Bluetooth: ISO: Add broadcast support
Bluetooth: Add initial implementation of BIS connections
Bluetooth: Add BTPROTO_ISO socket type
Bluetooth: Add initial implementation of CIS connections
Bluetooth: hci_core: Introduce hci_recv_event_data
Bluetooth: Convert delayed discov_off to hci_sync
Bluetooth: Remove update_scan hci_request dependancy
Bluetooth: Remove dead code from hci_request.c
Bluetooth: btrtl: Fix typo in comment
Bluetooth: MGMT: Fix holding hci_conn reference while command is queued
Bluetooth: mgmt: Fix using hci_conn_abort
Bluetooth: Use bt_status to convert from errno
Bluetooth: Add bt_status
Bluetooth: hci_sync: Split hci_dev_open_sync
Bluetooth: hci_sync: Refactor remove Adv Monitor
Bluetooth: hci_sync: Refactor add Adv Monitor
Bluetooth: hci_sync: Remove HCI_QUIRK_BROKEN_ERR_DATA_REPORTING
Bluetooth: btusb: Remove HCI_QUIRK_BROKEN_ERR_DATA_REPORTING for fake CSR
...
====================
Link: https://lore.kernel.org/r/20220723002232.964796-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Fix up the packet type if ISO packets are sent over the bulk endpoint.
Note: This is a stopgap since the Bluetooth specification currently
doesn't define any endpoint to transport ISO packets.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This adds broadcast support for BTPROTO_ISO by extending the
sockaddr_iso with a new struct sockaddr_iso_bc where the socket user
can set the broadcast address when receiving, the SID and the BIS
indexes it wants to synchronize.
When using BTPROTO_ISO for broadcast the roles are:
Broadcaster -> uses connect with address set to BDADDR_ANY:
> tools/isotest -s 00:00:00:00:00:00
Broadcast Receiver -> uses listen with address set to broadcaster:
> tools/isotest -d 00:AA:01:00:00:00
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This introduces a new socket type BTPROTO_ISO which can be enabled with
use of ISO Socket experiemental UUID, it can used to initiate/accept
connections and transfer packets between userspace and kernel similarly
to how BTPROTO_SCO works:
Central -> uses connect with address set to destination bdaddr:
> tools/isotest -s 00:AA:01:00:00:00
Peripheral -> uses listen:
> tools/isotest -d
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Daniel Borkmann says:
====================
bpf-next 2022-07-22
We've added 73 non-merge commits during the last 12 day(s) which contain
a total of 88 files changed, 3458 insertions(+), 860 deletions(-).
The main changes are:
1) Implement BPF trampoline for arm64 JIT, from Xu Kuohai.
2) Add ksyscall/kretsyscall section support to libbpf to simplify tracing kernel
syscalls through kprobe mechanism, from Andrii Nakryiko.
3) Allow for livepatch (KLP) and BPF trampolines to attach to the same kernel
function, from Song Liu & Jiri Olsa.
4) Add new kfunc infrastructure for netfilter's CT e.g. to insert and change
entries, from Kumar Kartikeya Dwivedi & Lorenzo Bianconi.
5) Add a ksym BPF iterator to allow for more flexible and efficient interactions
with kernel symbols, from Alan Maguire.
6) Bug fixes in libbpf e.g. for uprobe binary path resolution, from Dan Carpenter.
7) Fix BPF subprog function names in stack traces, from Alexei Starovoitov.
8) libbpf support for writing custom perf event readers, from Jon Doron.
9) Switch to use SPDX tag for BPF helper man page, from Alejandro Colomar.
10) Fix xsk send-only sockets when in busy poll mode, from Maciej Fijalkowski.
11) Reparent BPF maps and their charging on memcg offlining, from Roman Gushchin.
12) Multiple follow-up fixes around BPF lsm cgroup infra, from Stanislav Fomichev.
13) Use bootstrap version of bpftool where possible to speed up builds, from Pu Lehui.
14) Cleanup BPF verifier's check_func_arg() handling, from Joanne Koong.
15) Make non-prealloced BPF map allocations low priority to play better with
memcg limits, from Yafang Shao.
16) Fix BPF test runner to reject zero-length data for skbs, from Zhengchao Shao.
17) Various smaller cleanups and improvements all over the place.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (73 commits)
bpf: Simplify bpf_prog_pack_[size|mask]
bpf: Support bpf_trampoline on functions with IPMODIFY (e.g. livepatch)
bpf, x64: Allow to use caller address from stack
ftrace: Allow IPMODIFY and DIRECT ops on the same function
ftrace: Add modify_ftrace_direct_multi_nolock
bpf/selftests: Fix couldn't retrieve pinned program in xdp veth test
bpf: Fix build error in case of !CONFIG_DEBUG_INFO_BTF
selftests/bpf: Fix test_verifier failed test in unprivileged mode
selftests/bpf: Add negative tests for new nf_conntrack kfuncs
selftests/bpf: Add tests for new nf_conntrack kfuncs
selftests/bpf: Add verifier tests for trusted kfunc args
net: netfilter: Add kfuncs to set and change CT status
net: netfilter: Add kfuncs to set and change CT timeout
net: netfilter: Add kfuncs to allocate and insert CT
net: netfilter: Deduplicate code in bpf_{xdp,skb}_ct_lookup
bpf: Add documentation for kfuncs
bpf: Add support for forcing kfunc args to be trusted
bpf: Switch to new kfunc flags infrastructure
tools/resolve_btfids: Add support for 8-byte BTF sets
bpf: Introduce 8-byte BTF set
...
====================
Link: https://lore.kernel.org/r/20220722221218.29943-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A few more small driver specific fixes, this is obviously rather late
and if you think it's best to leave these until the next release that
would be reasonable.
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Merge tag 'spi-fix-v5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few more small driver specific fixes"
* tag 'spi-fix-v5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: spi-rspi: Fix PIO fallback on RZ platforms
spi: spi-cadence: Fix SPI NO Slave Select macro definition
spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers
This reverts commit 4a41f453be.
This to-be-reverted commit was meant to apply a stricter rule for the
stack to enter pingpong mode. However, the condition used to check for
interactive session "before(tp->lsndtime, icsk->icsk_ack.lrcvtime)" is
jiffy based and might be too coarse, which delays the stack entering
pingpong mode.
We revert this patch so that we no longer use the above condition to
determine interactive session, and also reduce pingpong threshold to 1.
Fixes: 4a41f453be ("tcp: change pingpong threshold to 3")
Reported-by: LemmyHuang <hlm3280@163.com>
Suggested-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Wei Wang <weiwan@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220721204404.388396-1-weiwan@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Because of how struct msghdr is usually initialised some fields and
sg_from_iter in particular might be left out not initialised, so we
can't safely use it in __zerocopy_sg_from_iter().
For now use the callback only when there is ->msg_ubuf set relying on
the fact that they're used together and we properly zero ->msg_ubuf.
Fixes: ebe73a284f ("net: Allow custom iter handler in msghdr")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Message-Id: <ce8b68b41351488f79fd998b032b3c56e9b1cc6c.1658401817.git.asml.silence@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Do devl_unlock() before freeing the devlink in
mlxsw_core_bus_device_unregister() function.
Reported-by: Ido Schimmel <idosch@nvidia.com>
Fixes: 72a4c8c94e ("mlxsw: convert driver to use unlocked devlink API during init/fini")
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20220721142424.3975704-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This introduces hci_recv_event_data to make it simpler to access the
contents of last received event rather than having to pass its contents
to the likes of *_ind/*_cfm callbacks.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Simplify the logic that selects bpf_prog_pack_size, and always use
(PMD_SIZE * num_possible_nodes()). This is a good tradeoff, as most of
the performance benefit observed is from less direct map fragmentation [0].
Also, module_alloc(4MB) may not allocate 4MB aligned memory. Therefore,
we cannot use (ptr & bpf_prog_pack_mask) to find the correct address of
bpf_prog_pack. Fix this by checking the header address falls in the range
of pack->ptr and (pack->ptr + bpf_prog_pack_size).
[0] https://lore.kernel.org/bpf/20220707223546.4124919-1-song@kernel.org/
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20220713204950.3015201-1-song@kernel.org
When tracing a function with IPMODIFY ftrace_ops (livepatch), the bpf
trampoline must follow the instruction pointer saved on stack. This needs
extra handling for bpf trampolines with BPF_TRAMP_F_CALL_ORIG flag.
Implement bpf_tramp_ftrace_ops_func and use it for the ftrace_ops used
by BPF trampoline. This enables tracing functions with livepatch.
This also requires moving bpf trampoline to *_ftrace_direct_mult APIs.
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/all/20220602193706.2607681-2-song@kernel.org/
Link: https://lore.kernel.org/bpf/20220720002126.803253-5-song@kernel.org
Currently we call the original function by using the absolute address
given at the JIT generation. That's not usable when having trampoline
attached to multiple functions, or the target address changes dynamically
(in case of live patch). In such cases we need to take the return address
from the stack.
Adding support to retrieve the original function address from the stack
by adding new BPF_TRAMP_F_ORIG_STACK flag for arch_prepare_bpf_trampoline
function.
Basically we take the return address of the 'fentry' call:
function + 0: call fentry # stores 'function + 5' address on stack
function + 5: ...
The 'function + 5' address will be used as the address for the
original function to call.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220720002126.803253-4-song@kernel.org
IPMODIFY (livepatch) and DIRECT (bpf trampoline) ops are both important
users of ftrace. It is necessary to allow them work on the same function
at the same time.
First, DIRECT ops no longer specify IPMODIFY flag. Instead, DIRECT flag is
handled together with IPMODIFY flag in __ftrace_hash_update_ipmodify().
Then, a callback function, ops_func, is added to ftrace_ops. This is used
by ftrace core code to understand whether the DIRECT ops can share with an
IPMODIFY ops. To share with IPMODIFY ops, the DIRECT ops need to implement
the callback function and adjust the direct trampoline accordingly.
If DIRECT ops is attached before the IPMODIFY ops, ftrace core code calls
ENABLE_SHARE_IPMODIFY_PEER on the DIRECT ops before registering the
IPMODIFY ops.
If IPMODIFY ops is attached before the DIRECT ops, ftrace core code calls
ENABLE_SHARE_IPMODIFY_SELF in __ftrace_hash_update_ipmodify. Owner of the
DIRECT ops may return 0 if the DIRECT trampoline can share with IPMODIFY,
so error code otherwise. The error code is propagated to
register_ftrace_direct_multi so that onwer of the DIRECT trampoline can
handle it properly.
For more details, please refer to comment before enum ftrace_ops_cmd.
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/all/20220602193706.2607681-2-song@kernel.org/
Link: https://lore.kernel.org/all/20220718055449.3960512-1-song@kernel.org/
Link: https://lore.kernel.org/bpf/20220720002126.803253-3-song@kernel.org
This is similar to modify_ftrace_direct_multi, but does not acquire
direct_mutex. This is useful when direct_mutex is already locked by the
user.
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/bpf/20220720002126.803253-2-song@kernel.org
* Two kexec-related build fixes.
* A DTS update to make the GPIO nodes match the upcoming dtschema.
* A fix that passes -mno-relax directly to the assembler when building
modules, to work around compilers that fail to do so.
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Merge tag 'riscv-for-linus-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- Two kexec-related build fixes
- A DTS update to make the GPIO nodes match the upcoming dtschema
- A fix that passes -mno-relax directly to the assembler when building
modules, to work around compilers that fail to do so
* tag 'riscv-for-linus-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: add as-options for modules with assembly compontents
riscv: dts: align gpio-key node names with dtschema
RISC-V: kexec: Fix build error without CONFIG_KEXEC
RISCV: kexec: Fix build error without CONFIG_MODULES
Fix yet another piece of ACPI CPPC changes fallout on AMD
platforms (Mario Limonciello).
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Merge tag 'acpi-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix yet another piece of ACPI CPPC changes fallout on AMD platforms
(Mario Limonciello)"
* tag 'acpi-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: CPPC: Don't require flexible address space if X86_FEATURE_CPPC is supported
The timed ending of Discoverability was handled in hci_requst.c, with
calls using the deprecated hci_req_add() mechanism. Converted to live
inside mgmt.c using the same delayed work queue, but with hci_sync
version of hci_update_discoverable().
Signed-off-by: Brian Gix <brian.gix@intel.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Sabrina Dubroca