The virtual memory information stored in os_info area is
required for creation of the kernel image PT_LOAD program
header for kernels since commit a2ec5bec56dd ("s390/mm:
uncouple physical vs virtual address spaces").
By contrast, if such information in os_info is absent the
PT_LOAD program header should not be created.
Currently the proper PT_LOAD program header is created for
kernels that contain the virtual memory information, but
for kernels without one an invalid header of zero size is
created. That in turn leads to stand-alone dump failures.
Use OS_INFO_KASLR_OFFSET variable to check whether os_info
is present or not (same as crash and makedumpfile tools do)
and based on that create or do not create the kernel image
PT_LOAD program header.
Fixes: f4cac27dc0 ("s390/crash: Use old os_info to create PT_LOAD headers")
Tested-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Acked-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Merge ACPI EC driver fixes, an ACPI APEI fix and PNP fixes for
6.10-rc3:
- Fix error handling during EC operation region accesses in the ACPI EC
driver (Armin Wolf).
- Fix a memory leak in the APEI error injection driver introduced
during its converion to a platform driver (Dan Williams).
- Fix build failures related to the dev_is_pnp() macro by redefining it
as a proper function and exporting it to modules as appropriate and
unexport pnp_bus_type which need not be exported any more (Andy
Shevchenko).
* acpi-ec:
ACPI: EC: Avoid returning AE_OK on errors in address space handler
ACPI: EC: Abort address space access upon error
* acpi-apei:
ACPI: APEI: EINJ: Fix einj_dev release leak
* pnp:
PNP: Hide pnp_bus_type from the non-PNP code
PNP: Make dev_is_pnp() to be a function and export it for modules
Now that all libbpf/bpftool code switched to btf_field_iter, remove
btf_type_visit_type_ids() and btf_type_visit_str_offs() callback-based
helpers as not needed anymore.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240605001629.4061937-6-andrii@kernel.org
Switch bpftool's code which is using libbpf-internal
btf_type_visit_type_ids() helper to new btf_field_iter functionality.
This makes bpftool code simpler, but also unblocks removing libbpf's
btf_type_visit_type_ids() helper completely.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Reviewed-by: Quentin Monnet <qmo@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240605001629.4061937-5-andrii@kernel.org
Use new BTF field iterator logic to replace all the callback-based
visitor calls. There is still a .BTF.ext callback-based visitor APIs
that should be converted, which will happens as a follow up.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240605001629.4061937-4-andrii@kernel.org
Switch all BPF linker code dealing with iterating BTF type ID and string
offset fields to new btf_field_iter facilities.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240605001629.4061937-3-andrii@kernel.org
Implement iterator-based type ID and string offset BTF field iterator.
This is used extensively in BTF-handling code and BPF linker code for
various sanity checks, rewriting IDs/offsets, etc. Currently this is
implemented as visitor pattern calling custom callbacks, which makes the
logic (especially in simple cases) unnecessarily obscure and harder to
follow.
Having equivalent functionality using iterator pattern makes for simpler
to understand and maintain code. As we add more code for BTF processing
logic in libbpf, it's best to switch to iterator pattern before adding
more callback-based code.
The idea for iterator-based implementation is to record offsets of
necessary fields within fixed btf_type parts (which should be iterated
just once), and, for kinds that have multiple members (based on vlen
field), record where in each member necessary fields are located.
Generic iteration code then just keeps track of last offset that was
returned and handles N members correctly. Return type is just u32
pointer, where NULL is returned when all relevant fields were already
iterated.
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Alan Maguire <alan.maguire@oracle.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/bpf/20240605001629.4061937-2-andrii@kernel.org
in bch2_move_data_btree, we might start with the trans unlocked from a
previous loop iteration - we need a trans_begin() before iter_init().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This fixes an issue where setting a device to durability=0 after it's
been used makes it impossible to remove.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Ingo reported that he was seeing these when hitting Control+C during a
perf tools build:
Makefile.perf:1149: *** Missing bpftool input for generating vmlinux.h. Stop.
The failure happens when you don't have vmlinux.h or vmlinux with BTF.
ifeq ($(VMLINUX_H),)
ifeq ($(VMLINUX_BTF),)
$(error Missing bpftool input for generating vmlinux.h)
endif
endif
VMLINUX_BTF can be empty if you didn't build a kernel or it doesn't have
a BTF section and the current kernel also has no BTF. This is totally
ok.
But VMLINUX_H should be set to the minimal version in the source tree
(unless you overwrite it manually) when you don't pass GEN_VMLINUX_H=1
(which requires VMLINUX_BTF should not be empty). The problem is that
it's defined in Makefile.config which is not included for `make clean`.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Link: http://lore.kernel.org/lkml/CAM9d7ch5HTr+k+_GpbMrX0HUo5BZ11byh1xq0Two7B7RQACuNw@mail.gmail.com
Link: http://lore.kernel.org/lkml/ZjssGrj+abyC6mYP@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This reverts commit 7d1405c71d.
This causes segfaults in some cases, as reported by Milian:
```
sudo /usr/bin/perf record -z --call-graph dwarf -e cycles -e
raw_syscalls:sys_enter ls
...
[ perf record: Woken up 3 times to write data ]
malloc(): invalid next size (unsorted)
Aborted
```
Backtrace with GDB + debuginfod:
```
malloc(): invalid next size (unsorted)
Thread 1 "perf" received signal SIGABRT, Aborted.
__pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6,
no_tid=no_tid@entry=0) at pthread_kill.c:44
Downloading source file /usr/src/debug/glibc/glibc/nptl/pthread_kill.c
44 return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO
(ret) : 0;
(gdb) bt
#0 __pthread_kill_implementation (threadid=<optimized out>,
signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#1 0x00007ffff6ea8eb3 in __pthread_kill_internal (threadid=<optimized out>,
signo=6) at pthread_kill.c:78
#2 0x00007ffff6e50a30 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/
raise.c:26
#3 0x00007ffff6e384c3 in __GI_abort () at abort.c:79
#4 0x00007ffff6e39354 in __libc_message_impl (fmt=fmt@entry=0x7ffff6fc22ea
"%s\n") at ../sysdeps/posix/libc_fatal.c:132
#5 0x00007ffff6eb3085 in malloc_printerr (str=str@entry=0x7ffff6fc5850
"malloc(): invalid next size (unsorted)") at malloc.c:5772
#6 0x00007ffff6eb657c in _int_malloc (av=av@entry=0x7ffff6ff6ac0
<main_arena>, bytes=bytes@entry=368) at malloc.c:4081
#7 0x00007ffff6eb877e in __libc_calloc (n=<optimized out>,
elem_size=<optimized out>) at malloc.c:3754
#8 0x000055555569bdb6 in perf_session.do_write_header ()
#9 0x00005555555a373a in __cmd_record.constprop.0 ()
#10 0x00005555555a6846 in cmd_record ()
#11 0x000055555564db7f in run_builtin ()
#12 0x000055555558ed77 in main ()
```
Valgrind memcheck:
```
==45136== Invalid write of size 8
==45136== at 0x2B38A5: perf_event__synthesize_id_sample (in /usr/bin/perf)
==45136== by 0x157069: __cmd_record.constprop.0 (in /usr/bin/perf)
==45136== by 0x15A845: cmd_record (in /usr/bin/perf)
==45136== by 0x201B7E: run_builtin (in /usr/bin/perf)
==45136== by 0x142D76: main (in /usr/bin/perf)
==45136== Address 0x6a866a8 is 0 bytes after a block of size 40 alloc'd
==45136== at 0x4849BF3: calloc (vg_replace_malloc.c:1675)
==45136== by 0x3574AB: zalloc (in /usr/bin/perf)
==45136== by 0x1570E0: __cmd_record.constprop.0 (in /usr/bin/perf)
==45136== by 0x15A845: cmd_record (in /usr/bin/perf)
==45136== by 0x201B7E: run_builtin (in /usr/bin/perf)
==45136== by 0x142D76: main (in /usr/bin/perf)
==45136==
==45136== Syscall param write(buf) points to unaddressable byte(s)
==45136== at 0x575953D: __libc_write (write.c:26)
==45136== by 0x575953D: write (write.c:24)
==45136== by 0x35761F: ion (in /usr/bin/perf)
==45136== by 0x357778: writen (in /usr/bin/perf)
==45136== by 0x1548F7: record__write (in /usr/bin/perf)
==45136== by 0x15708A: __cmd_record.constprop.0 (in /usr/bin/perf)
==45136== by 0x15A845: cmd_record (in /usr/bin/perf)
==45136== by 0x201B7E: run_builtin (in /usr/bin/perf)
==45136== by 0x142D76: main (in /usr/bin/perf)
==45136== Address 0x6a866a8 is 0 bytes after a block of size 40 alloc'd
==45136== at 0x4849BF3: calloc (vg_replace_malloc.c:1675)
==45136== by 0x3574AB: zalloc (in /usr/bin/perf)
==45136== by 0x1570E0: __cmd_record.constprop.0 (in /usr/bin/perf)
==45136== by 0x15A845: cmd_record (in /usr/bin/perf)
==45136== by 0x201B7E: run_builtin (in /usr/bin/perf)
==45136== by 0x142D76: main (in /usr/bin/perf)
==45136==
-----
Closes: https://lore.kernel.org/linux-perf-users/23879991.0LEYPuXRzz@milian-workstation/
Reported-by: Milian Wolff <milian.wolff@kdab.com>
Tested-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: stable@kernel.org # 6.8+
Link: https://lore.kernel.org/lkml/Zl9ksOlHJHnKM70p@x1
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
For ${atomic}_sub_and_test() the @i parameter is the value to subtract,
not add. Fix the typo in the kerneldoc template and generate the headers
with this update.
Fixes: ad8110706f ("locking/atomic: scripts: generate kerneldoc comments")
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20240515133844.3502360-1-cmllamas@google.com
In our production environment, we found many hung tasks which are
blocked for more than 18 hours. Their call traces are like this:
[346278.191038] __schedule+0x2d8/0x890
[346278.191046] schedule+0x4e/0xb0
[346278.191049] perf_event_free_task+0x220/0x270
[346278.191056] ? init_wait_var_entry+0x50/0x50
[346278.191060] copy_process+0x663/0x18d0
[346278.191068] kernel_clone+0x9d/0x3d0
[346278.191072] __do_sys_clone+0x5d/0x80
[346278.191076] __x64_sys_clone+0x25/0x30
[346278.191079] do_syscall_64+0x5c/0xc0
[346278.191083] ? syscall_exit_to_user_mode+0x27/0x50
[346278.191086] ? do_syscall_64+0x69/0xc0
[346278.191088] ? irqentry_exit_to_user_mode+0x9/0x20
[346278.191092] ? irqentry_exit+0x19/0x30
[346278.191095] ? exc_page_fault+0x89/0x160
[346278.191097] ? asm_exc_page_fault+0x8/0x30
[346278.191102] entry_SYSCALL_64_after_hwframe+0x44/0xae
The task was waiting for the refcount become to 1, but from the vmcore,
we found the refcount has already been 1. It seems that the task didn't
get woken up by perf_event_release_kernel() and got stuck forever. The
below scenario may cause the problem.
Thread A Thread B
... ...
perf_event_free_task perf_event_release_kernel
...
acquire event->child_mutex
...
get_ctx
... release event->child_mutex
acquire ctx->mutex
...
perf_free_event (acquire/release event->child_mutex)
...
release ctx->mutex
wait_var_event
acquire ctx->mutex
acquire event->child_mutex
# move existing events to free_list
release event->child_mutex
release ctx->mutex
put_ctx
... ...
In this case, all events of the ctx have been freed, so we couldn't
find the ctx in free_list and Thread A will miss the wakeup. It's thus
necessary to add a wakeup after dropping the reference.
Fixes: 1cf8dfe8a6 ("perf/core: Fix race between close() and fork()")
Signed-off-by: Haifeng Xu <haifeng.xu@shopee.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20240513103948.33570-1-haifeng.xu@shopee.com
Tariq Toukan says:
====================
mlx5 core fixes 20240603
This small patchset provides two bug fixes from the team to the mlx5 core driver.
Series generated against:
commit 33700a0c9b ("net/tcp: Don't consider TCP_CLOSE in TCP_AO_ESTABLISHED")
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
In case pci channel becomes offline the driver should not wait for PCI
reads during health dump and recovery flow. The driver has timeout for
each of these loops trying to read PCI, so it would fail anyway.
However, in case of recovery waiting till timeout may cause the pci
error_detected() callback fail to meet pci_dpc_recovered() wait timeout.
Fixes: b3bd076f75 ("net/mlx5: Report devlink health on FW fatal issues")
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drori <shayd@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mainline MTK ethernet driver suffers long time from rarly but
annoying tx queue timeouts. We think that this is caused by fixed
dma sizes hardcoded for all SoCs.
We suspect this problem arises from a low level of free TX DMADs,
the TX Ring alomost full.
The transmit timeout is caused by the Tx queue not waking up. The
Tx queue stops when the free counter is less than ring->thres, and
it will wake up once the free counter is greater than ring->thres.
If the CPU is too late to wake up the Tx queues, it may cause a
transmit timeout.
Therefore, we increased the TX and RX DMADs to improve this error
situation.
Use the dma-size implementation from SDK in a per SoC manner. In
difference to SDK we have no RSS feature yet, so all RX/TX sizes
should be raised from 512 to 2048 byte except fqdma on mt7988 to
avoid the tx timeout issue.
Fixes: 656e705243 ("net-next: mediatek: add support for MT7623 ethernet")
Suggested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kevin Yang says:
====================
tcp: add sysctl_tcp_rto_min_us
Adding a sysctl knob to allow user to specify a default
rto_min at socket init time.
After this patch series, the rto_min will has multiple sources:
route option has the highest precedence, followed by the
TCP_BPF_RTO_MIN socket option, followed by this new
tcp_rto_min_us sysctl.
v3:
fix typo, simplify min/max_t to min/max
v2:
fit line width to 80 column.
v2: https://lore.kernel.org/netdev/20240530153436.2202800-1-yyd@google.com/
v1: https://lore.kernel.org/netdev/20240528171320.1332292-1-yyd@google.com/
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Adding a sysctl knob to allow user to specify a default
rto_min at socket init time, other than using the hard
coded 200ms default rto_min.
Note that the rto_min route option has the highest precedence
for configuring this setting, followed by the TCP_BPF_RTO_MIN
socket option, followed by the tcp_rto_min_us sysctl.
Signed-off-by: Kevin Yang <yyd@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rto_min now has multiple sources, ordered by preprecedence high to
low: ip route option rto_min, icsk->icsk_rto_min.
When derive delack_max from rto_min, we should not only use ip
route option, but should use tcp_rto_min helper to get the correct
rto_min.
Signed-off-by: Kevin Yang <yyd@google.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Reviewed-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In some configurations __const_iowrite32_copy() does not get inlined
and gcc runs into the BUILD_BUG():
In file included from <command-line>:
In function '__const_memcpy_toio_aligned32',
inlined from '__const_iowrite32_copy' at arch/arm64/include/asm/io.h:203:3,
inlined from '__const_iowrite32_copy' at arch/arm64/include/asm/io.h:199:20:
include/linux/compiler_types.h:487:45: error: call to '__compiletime_assert_538' declared with attribute error: BUILD_BUG failed
487 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:468:25: note: in definition of macro '__compiletime_assert'
468 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:487:9: note: in expansion of macro '_compiletime_assert'
487 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:59:21: note: in expansion of macro 'BUILD_BUG_ON_MSG'
59 | #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
| ^~~~~~~~~~~~~~~~
arch/arm64/include/asm/io.h:193:17: note: in expansion of macro 'BUILD_BUG'
193 | BUILD_BUG();
| ^~~~~~~~~
Move the check for constant arguments into the inline function to ensure
it is still constant if the compiler decides against inlining it, and
mark them as __always_inline to override the logic that sometimes leads
to the compiler not producing the simplified output.
Note that either the __always_inline annotation or the check for a
constant value are sufficient here, but combining the two looks cleaner
as it also avoids the macro. With clang-8 and older, the macro was still
needed, but all versions of gcc and clang can reliably perform constant
folding here.
Fixes: ead79118da ("arm64/io: Provide a WC friendly __iowriteXX_copy()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240604210006.668912-1-arnd@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Jaroslav reports Dell's OMSA Systems Management Data Engine
expects NLM_DONE in a separate recvmsg(), both for rtnl_dump_ifinfo()
and inet_dump_ifaddr(). We already added a similar fix previously in
commit 460b0d33cf ("inet: bring NLM_DONE out to a separate recv() again")
Instead of modifying all the dump handlers, and making them look
different than modern for_each_netdev_dump()-based dump handlers -
put the workaround in rtnetlink code. This will also help us move
the custom rtnl-locking from af_netlink in the future (in net-next).
Note that this change is not touching rtnl_dump_all(). rtnl_dump_all()
is different kettle of fish and a potential problem. We now mix families
in a single recvmsg(), but NLM_DONE is not coalesced.
Tested:
./cli.py --dbg-small-recv 4096 --spec netlink/specs/rt_addr.yaml \
--dump getaddr --json '{"ifa-family": 2}'
./cli.py --dbg-small-recv 4096 --spec netlink/specs/rt_route.yaml \
--dump getroute --json '{"rtm-family": 2}'
./cli.py --dbg-small-recv 4096 --spec netlink/specs/rt_link.yaml \
--dump getlink
Fixes: 3e41af9076 ("rtnetlink: use xarray iterator to implement rtnl_dump_ifinfo()")
Fixes: cdb2f80f1c ("inet: use xa_array iterator to implement inet_dump_ifaddr()")
Reported-by: Jaroslav Pulchart <jaroslav.pulchart@gooddata.com>
Link: https://lore.kernel.org/all/CAK8fFZ7MKoFSEzMBDAOjoUt+vTZRRQgLDNXEOfdCCXSoXXKE0g@mail.gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Like previous patch does in TCP, we need to adhere to RFC 1213:
"tcpCurrEstab OBJECT-TYPE
...
The number of TCP connections for which the current state
is either ESTABLISHED or CLOSE- WAIT."
So let's consider CLOSE-WAIT sockets.
The logic of counting
When we increment the counter?
a) Only if we change the state to ESTABLISHED.
When we decrement the counter?
a) if the socket leaves ESTABLISHED and will never go into CLOSE-WAIT,
say, on the client side, changing from ESTABLISHED to FIN-WAIT-1.
b) if the socket leaves CLOSE-WAIT, say, on the server side, changing
from CLOSE-WAIT to LAST-ACK.
Fixes: d9cd27b8cd ("mptcp: add CurrEstab MIB counter support")
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
According to RFC 1213, we should also take CLOSE-WAIT sockets into
consideration:
"tcpCurrEstab OBJECT-TYPE
...
The number of TCP connections for which the current state
is either ESTABLISHED or CLOSE- WAIT."
After this, CurrEstab counter will display the total number of
ESTABLISHED and CLOSE-WAIT sockets.
The logic of counting
When we increment the counter?
a) if we change the state to ESTABLISHED.
b) if we change the state from SYN-RECEIVED to CLOSE-WAIT.
When we decrement the counter?
a) if the socket leaves ESTABLISHED and will never go into CLOSE-WAIT,
say, on the client side, changing from ESTABLISHED to FIN-WAIT-1.
b) if the socket leaves CLOSE-WAIT, say, on the server side, changing
from CLOSE-WAIT to LAST-ACK.
Please note: there are two chances that old state of socket can be changed
to CLOSE-WAIT in tcp_fin(). One is SYN-RECV, the other is ESTABLISHED.
So we have to take care of the former case.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
These fields can be read and written locklessly, add annotations
around these minor races.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds support to dump NIX transmit queue topology.
There are multiple levels of scheduling/shaping supported by
NIX and a packet traverses through multiple levels before sending
the packet out. At each level, there are set of scheduling/shaping
rules applied to a packet flow.
Each packet traverses through multiple levels
SQ->SMQ->TL4->TL3->TL2->TL1 and these levels are mapped in a parent-child
relationship.
This patch dumps the debug information related to all TM Levels in
the following way.
Example:
$ echo <nixlf> > /sys/kernel/debug/octeontx2/nix/tm_tree
$ cat /sys/kernel/debug/octeontx2/nix/tm_tree
A more desriptive set of registers at each level can be dumped
in the following way.
Example:
$ echo <nixlf> > /sys/kernel/debug/octeontx2/nix/tm_topo
$ cat /sys/kernel/debug/octeontx2/nix/tm_topo
Signed-off-by: Anshumali Gaur <agaur@marvell.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Drop the second snapshot of mmu_invalidate_seq in kvm_faultin_pfn().
Before checking the mismatch of private vs. shared, mmu_invalidate_seq is
saved to fault->mmu_seq, which can be used to detect an invalidation
related to the gfn occurred, i.e. KVM will not install a mapping in page
table if fault->mmu_seq != mmu_invalidate_seq.
Currently there is a second snapshot of mmu_invalidate_seq, which may not
be same as the first snapshot in kvm_faultin_pfn(), i.e. the gfn attribute
may be changed between the two snapshots, but the gfn may be mapped in
page table without hindrance. Therefore, drop the second snapshot as it
has no obvious benefits.
Fixes: f6adeae81f ("KVM: x86/mmu: Handle no-slot faults at the beginning of kvm_faultin_pfn()")
Signed-off-by: Tao Su <tao1.su@linux.intel.com>
Message-ID: <20240528102234.2162763-1-tao1.su@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
- Large set of FP/SVE fixes for pKVM, addressing the fallout
from the per-CPU data rework and making sure that the host
is not involved in the FP/SVE switching any more
- Allow FEAT_BTI to be enabled with NV now that FEAT_PAUTH
is copletely supported
- Fix for the respective priorities of Failed PAC, Illegal
Execution state and Instruction Abort exceptions
- Fix the handling of AArch32 instruction traps failing their
condition code, which was broken by the introduction of
ESR_EL2.ISS2
- Allow vpcus running in AArch32 state to be restored in
System mode
- Fix AArch32 GPR restore that would lose the 64 bit state
under some conditions
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Merge tag 'kvmarm-fixes-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.10, take #1
- Large set of FP/SVE fixes for pKVM, addressing the fallout
from the per-CPU data rework and making sure that the host
is not involved in the FP/SVE switching any more
- Allow FEAT_BTI to be enabled with NV now that FEAT_PAUTH
is copletely supported
- Fix for the respective priorities of Failed PAC, Illegal
Execution state and Instruction Abort exceptions
- Fix the handling of AArch32 instruction traps failing their
condition code, which was broken by the introduction of
ESR_EL2.ISS2
- Allow vpcus running in AArch32 state to be restored in
System mode
- Fix AArch32 GPR restore that would lose the 64 bit state
under some conditions
The function run_all_insn_set_hw_mode() is registered as startup callback
of 'CPUHP_AP_ARM64_ISNDEP_STARTING', it invokes set_hw_mode() methods of
all emulated instructions.
As the STARTING callbacks are not expected to fail, if one of the
set_hw_mode() fails, e.g. due to el0 mixed-endian is not supported for
'setend', it will report a warning:
```
CPU[2] cannot support the emulation of setend
CPU 2 UP state arm64/isndep:starting (136) failed (-22)
CPU2: Booted secondary processor 0x0000000002 [0x414fd0c1]
```
To fix it, add a check for INSN_UNAVAILABLE status and skip the process.
Signed-off-by: Wei Li <liwei391@huawei.com>
Tested-by: Huisong Li <lihuisong@huawei.com>
Link: https://lore.kernel.org/r/20240423093501.3460764-1-liwei391@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
hsr_redbox.sh test need to create bridge for testing. Add the missing
config CONFIG_BRIDGE in config file.
Fixes: eafbf0574e ("test: hsr: Extend the hsr_redbox.sh to have more SAN devices connected")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Tested-by: Simon Horman <horms@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit f58f45c1e5 ("vxlan: drop packets from invalid src-address")
has recently been added to vxlan mainly in the context of source
address snooping/learning so that when it is enabled, an entry in the
FDB is not being created for an invalid address for the corresponding
tunnel endpoint.
Before commit f58f45c1e5 vxlan was similarly behaving as geneve in
that it passed through whichever macs were set in the L2 header. It
turns out that this change in behavior breaks setups, for example,
Cilium with netkit in L3 mode for Pods as well as tunnel mode has been
passing before the change in f58f45c1e5 for both vxlan and geneve.
After mentioned change it is only passing for geneve as in case of
vxlan packets are dropped due to vxlan_set_mac() returning false as
source and destination macs are zero which for E/W traffic via tunnel
is totally fine.
Fix it by only opting into the is_valid_ether_addr() check in
vxlan_set_mac() when in fact source address snooping/learning is
actually enabled in vxlan. This is done by moving the check into
vxlan_snoop(). With this change, the Cilium connectivity test suite
passes again for both tunnel flavors.
Fixes: f58f45c1e5 ("vxlan: drop packets from invalid src-address")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Bauer <mail@david-bauer.net>
Cc: Ido Schimmel <idosch@nvidia.com>
Cc: Nikolay Aleksandrov <razor@blackwall.org>
Cc: Martin KaFai Lau <martin.lau@kernel.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: David Bauer <mail@david-bauer.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
q->bands will be assigned to qopt->bands to execute subsequent code logic
after kmalloc. So the old q->bands should not be used in kmalloc.
Otherwise, an out-of-bounds write will occur.
Fixes: c2999f7fb0 ("net: sched: multiq: don't call qdisc_put() while holding tree lock")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Acked-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe JAILLET says:
====================
devlink: Constify struct devlink_dpipe_table_ops
Patch 1 updates devl_dpipe_table_register() and struct
devlink_dpipe_table to accept "const struct devlink_dpipe_table_ops".
Then patch 2 updates the only user of this function.
This is compile tested only.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
'struct devlink_dpipe_table_ops' are not modified in this driver.
Constifying these structures moves some data to a read-only section, so
increase overall security.
On a x86_64, with allmodconfig:
Before:
======
text data bss dec hex filename
15557 712 0 16269 3f8d drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.o
After:
=====
text data bss dec hex filename
15789 488 0 16277 3f95 drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
"struct devlink_dpipe_table_ops" only contains some function pointers.
Update "struct devlink_dpipe_table" and the 'table_ops' parameter of
devl_dpipe_table_register() so that structures in drivers can be
constified.
Constifying these structures will move some data to a read-only section, so
increase overall security.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Aquantia Ethernet PHYs got 3 LED output pins which are typically used
to indicate link status and activity.
Add a minimal LED controller driver supporting the most common uses
with the 'netdev' trigger as well as software-driven forced control of
the LEDs.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
[ rework indentation, fix checkpatch error and improve some functions ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
In preparation for LEDs support, move priv and hw stat to header to
reference priv struct also in other .c outside aquantia.main
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
'cable_test_tdr_req_info' is unused since the original
commit f2bc8ad31a ("net: ethtool: Allow PHY cable test TDR data to
configured").
Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
'cfpktq' has been unused since
commit 73d6ac633c ("caif: code cleanup").
'caif_packet_funcs' is declared but never defined.
Remove both of them.
Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When I was doing some experiments, I found that when using the first
parameter, namely, struct net, in ip_metrics_convert() always triggers NULL
pointer crash. Then I digged into this part, realizing that we can remove
this one due to its uselessness.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Smatch complains:
net/bridge/br_netlink_tunnel.c:
318 br_process_vlan_tunnel_info() warn: inconsistent indenting
Fix it with a proper indenting
Signed-off-by: Chen Hanxiao <chenhx.fnst@fujitsu.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
KSZ8061 needs to write to a MMD register at driver initialization to fix
an errata. This worked in 5.0 kernel but not in newer kernels. The
issue is the main phylib code no longer resets PHY at the very beginning.
Calling phy resuming code later will reset the chip if it is already
powered down at the beginning. This wipes out the MMD register write.
Solution is to implement a phy resume function for KSZ8061 to take care
of this problem.
Fixes: 232ba3a51c ("net: phy: Micrel KSZ8061: link failure after cable connect")
Signed-off-by: Tristram Ha <tristram.ha@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This rewrites the Vitesse VSC73xx DSA switches DT binding in
schema.
It was a bit tricky since I needed to come up with some way
of applying the SPI properties only on SPI devices and not
platform devices, but I figured something out that works.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
When copying smc settings to clcsock, avoid setting clcsock's sk_sndbuf
to sysctl_tcp_wmem[1], since this may overwrite the value set by
tcp_sndbuf_expand() in TCP connection establishment.
And the other setting sk_{snd|rcv}buf to sysctl value in
smc_adjust_sock_bufsizes() can also be omitted since the initialization
of smc sock and clcsock has set sk_{snd|rcv}buf to smc.sysctl_{w|r}mem
or ipv4_sysctl_tcp_{w|r}mem[1].
Fixes: 30c3c4a449 ("net/smc: Use correct buffer sizes when switching between TCP and SMC")
Link: https://lore.kernel.org/r/5eaf3858-e7fd-4db8-83e8-3d7a3e0e9ae2@linux.alibaba.com
Signed-off-by: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Reviewed-by: Gerd Bayer <gbayer@linux.ibm.com>, too.
Signed-off-by: David S. Miller <davem@davemloft.net>
PF mcam entries has to be at low priority always so that VF
can install longest prefix match rules at higher priority.
This was taken care currently but when priority allocation
wrt reference entry is requested then entries are allocated
from mid-zone instead of low priority zone. Fix this and
always allocate entries from low priority zone for PFs.
Fixes: 7df5b4b260 ("octeontx2-af: Allocate low priority entries for PF")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The EFI runtime wrappers are a sandbox for calling into EFI runtime
services, which are invoked using indirect calls. When running with kCFI
enabled, the compiler will require the target of any indirect call to be
type annotated.
Given that the EFI runtime services prototypes and calling convention
are governed by the EFI spec, not the Linux kernel, adding such type
annotations for firmware routines is infeasible, and so the compiler
must be informed that prototype validation should be omitted.
Add the __nocfi annotation at the appropriate places in the EFI runtime
wrapper code to achieve this.
Note that this currently only affects 32-bit ARM, given that other
architectures that support both kCFI and EFI use an asm wrapper to call
EFI runtime services, and this hides the indirect call from the
compiler.
Fixes: 1a4fec49ef ("ARM: 9392/2: Support CLANG CFI")
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
