The PLIC specification does not describe the interrupt pendings bits as
read-write, only that they "can be read". To allow for retriggering of
interrupts (and the use of the irq debugfs interface) enable
HARDIRQS_SW_RESEND for RISC-V.
Link: https://github.com/riscv/riscv-plic-spec/blob/master/riscv-plic.adoc#interrupt-pending-bits
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Tested-by: Palmer Dabbelt <palmer@rivosinc.com> # on QEMU
Reviewed-by: Björn Töpel <bjorn@kernel.org>
Link: https://lore.kernel.org/r/20220729111116.259146-1-conor.dooley@microchip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Zong Li <zong.li@sifive.com> says:
Since composable cache may be L3 cache if private L2 cache exists, we
should use its original name "composable cache" to prevent confusion.
This patchset contains the modification which is related to ccache, such
as DT binding and EDAC driver.
* b4-shazam-merge:
riscv: Add cache information in AUX vector
soc: sifive: ccache: define the macro for the register shifts
soc: sifive: ccache: use pr_fmt() to remove CCACHE: prefixes
soc: sifive: ccache: reduce printing on init
soc: sifive: ccache: determine the cache level from dts
soc: sifive: ccache: Rename SiFive L2 cache to Composable cache.
dt-bindings: sifive-ccache: change Sifive L2 cache to Composable cache
Link: https://lore.kernel.org/r/20220913061817.22564-1-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
There are no standard CSR registers to provide cache information, the
way for RISC-V is to get this information from DT. sysconf syscall
could use them to get information of cache through AUX vector.
The result of 'getconf -a|grep -i cache' as follows:
LEVEL1_ICACHE_SIZE 32768
LEVEL1_ICACHE_ASSOC 2
LEVEL1_ICACHE_LINESIZE 64
LEVEL1_DCACHE_SIZE 32768
LEVEL1_DCACHE_ASSOC 4
LEVEL1_DCACHE_LINESIZE 64
LEVEL2_CACHE_SIZE 524288
LEVEL2_CACHE_ASSOC 8
LEVEL2_CACHE_LINESIZE 64
LEVEL3_CACHE_SIZE 4194304
LEVEL3_CACHE_ASSOC 16
LEVEL3_CACHE_LINESIZE 64
LEVEL4_CACHE_SIZE 0
LEVEL4_CACHE_ASSOC 0
LEVEL4_CACHE_LINESIZE 0
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
Suggested-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220913061817.22564-8-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Define the macro for the register shifts, it could make the code be
more readable
Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220913061817.22564-7-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Use the pr_fmt() macro to prefix all the output with "CCACHE:"
to avoid having to write it out each time, or make a large diff
when the next change comes along.
Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220913061817.22564-6-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The driver prints out 6 lines on startup, which can easily be redcued
to two lines without losing any information.
Note, to make the types work better, uint64_t has been replaced with
ULL to make the unsigned long long match the format in the print
statement.
Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220913061817.22564-5-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Composable cache could be L2 or L3 cache, use 'cache-level' property of
device node to determine the level.
Signed-off-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220913061817.22564-4-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Since composable cache may be L3 cache if there is a L2 cache, we should
use its original name composable cache to prevent confusion.
There are some new lines were generated due to adding the compatible
"sifive,ccache0" into ID table and indent requirement.
The sifive L2 has been renamed to sifive CCACHE, EDAC driver needs to
apply the change as well.
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
Co-developed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220913061817.22564-3-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Since composable cache may be L3 cache if private L2 cache exists, we
should use its original name Composable cache to prevent confusion.
Signed-off-by: Zong Li <zong.li@sifive.com>
Suggested-by: Conor Dooley <conor.dooley@microchip.com>
Suggested-by: Ben Dooks <ben.dooks@sifive.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220913061817.22564-2-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
catching the Chinese translation up with the front-page rework.
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Merge tag 'docs-6.1-2' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of relatively simple documentation fixes, plus a set of
patches catching the Chinese translation up with the front-page
rework"
* tag 'docs-6.1-2' of git://git.lwn.net/linux:
Documentation: rtla: Correct command line example
docs/zh_CN: add a man-pages link to zh_CN/index.rst
docs/zh_CN: Rewrite the Chinese translation front page
docs/zh_CN: add zh_CN/arch.rst
docs/zh_CN: promote the title of zh_CN/process/index.rst
docs/zh_CN: Update the translation of page_owner to 6.0-rc7
docs/zh_CN: Update the translation of ksm to 6.0-rc7
docs/howto: Replace abundoned URL of gmane.org
Documentation: ubifs: Fix compression idiom
Documentation/mm/page_owner.rst: delete frequently changing experimental data
docs/zh_CN: Fix build warning
docs: ftrace: Correct access mode
Current release - regressions:
- Revert "net/sched: taprio: make qdisc_leaf() see
the per-netdev-queue pfifo child qdiscs", it may cause crashes
when the qdisc is reconfigured
- inet: ping: fix splat due to packet allocation refactoring in inet
- tcp: clean up kernel listener's reqsk in inet_twsk_purge(),
fix UAF due to races when per-netns hash table is used
Current release - new code bugs:
- eth: adin1110: check in netdev_event that netdev belongs to driver
- fixes for PTR_ERR() vs NULL bugs in driver code, from Dan and co.
Previous releases - regressions:
- ipv4: handle attempt to delete multipath route when fib_info
contains an nh reference, avoid oob access
- wifi: fix handful of bugs in the new Multi-BSSID code
- wifi: mt76: fix rate reporting / throughput regression on mt7915
and newer, fix checksum offload
- wifi: iwlwifi: mvm: fix double list_add at
iwl_mvm_mac_wake_tx_queue (other cases)
- wifi: mac80211: do not drop packets smaller than the LLC-SNAP
header on fast-rx
Previous releases - always broken:
- ieee802154: don't warn zero-sized raw_sendmsg()
- ipv6: ping: fix wrong checksum for large frames
- mctp: prevent double key removal and unref
- tcp/udp: fix memory leaks and races around IPV6_ADDRFORM
- hv_netvsc: fix race between VF offering and VF association message
Misc:
- remove -Warray-bounds silencing in the drivers, compilers fixed
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter, and wifi.
Current release - regressions:
- Revert "net/sched: taprio: make qdisc_leaf() see the
per-netdev-queue pfifo child qdiscs", it may cause crashes when the
qdisc is reconfigured
- inet: ping: fix splat due to packet allocation refactoring in inet
- tcp: clean up kernel listener's reqsk in inet_twsk_purge(), fix UAF
due to races when per-netns hash table is used
Current release - new code bugs:
- eth: adin1110: check in netdev_event that netdev belongs to driver
- fixes for PTR_ERR() vs NULL bugs in driver code, from Dan and co.
Previous releases - regressions:
- ipv4: handle attempt to delete multipath route when fib_info
contains an nh reference, avoid oob access
- wifi: fix handful of bugs in the new Multi-BSSID code
- wifi: mt76: fix rate reporting / throughput regression on mt7915
and newer, fix checksum offload
- wifi: iwlwifi: mvm: fix double list_add at
iwl_mvm_mac_wake_tx_queue (other cases)
- wifi: mac80211: do not drop packets smaller than the LLC-SNAP
header on fast-rx
Previous releases - always broken:
- ieee802154: don't warn zero-sized raw_sendmsg()
- ipv6: ping: fix wrong checksum for large frames
- mctp: prevent double key removal and unref
- tcp/udp: fix memory leaks and races around IPV6_ADDRFORM
- hv_netvsc: fix race between VF offering and VF association message
Misc:
- remove -Warray-bounds silencing in the drivers, compilers fixed"
* tag 'net-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
sunhme: fix an IS_ERR() vs NULL check in probe
net: marvell: prestera: fix a couple NULL vs IS_ERR() checks
kcm: avoid potential race in kcm_tx_work
tcp: Clean up kernel listener's reqsk in inet_twsk_purge()
net: phy: micrel: Fixes FIELD_GET assertion
openvswitch: add nf_ct_is_confirmed check before assigning the helper
tcp: Fix data races around icsk->icsk_af_ops.
ipv6: Fix data races around sk->sk_prot.
tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
udp: Call inet6_destroy_sock() in setsockopt(IPV6_ADDRFORM).
tcp/udp: Fix memory leak in ipv6_renew_options().
mctp: prevent double key removal and unref
selftests: netfilter: Fix nft_fib.sh for all.rp_filter=1
netfilter: rpfilter/fib: Populate flowic_l3mdev field
selftests: netfilter: Test reverse path filtering
net/mlx5: Make ASO poll CQ usable in atomic context
tcp: cdg: allow tcp_cdg_release() to be called multiple times
inet: ping: fix recent breakage
ipv6: ping: fix wrong checksum for large frames
net: ethernet: ti: am65-cpsw: set correct devlink flavour for unused ports
...
Fix a regression in virtio pci on power.
Add a reviewer for ifcvf.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
- Fix a regression in virtio pci on power
- Add a reviewer for ifcvf
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa/ifcvf: add reviewer
virtio_pci: use irq to detect interrupt support
- Found that the synthetic events were using strlen/strscpy() on values
that could have come from userspace, and that is bad.
Consolidate the string logic of kprobe and eprobe and extend it to
the synthetic events to safely process string addresses.
- Clean up content of text dump in ftrace_bug() where the output does not
make char reads into signed and sign extending the byte output.
- Fix some kernel docs in the ring buffer code.
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Merge tag 'trace-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Found that the synthetic events were using strlen/strscpy() on values
that could have come from userspace, and that is bad.
Consolidate the string logic of kprobe and eprobe and extend it to
the synthetic events to safely process string addresses.
- Clean up content of text dump in ftrace_bug() where the output does
not make char reads into signed and sign extending the byte output.
- Fix some kernel docs in the ring buffer code.
* tag 'trace-v6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix reading strings from synthetic events
tracing: Add "(fault)" name injection to kernel probes
tracing: Move duplicate code of trace_kprobe/eprobe.c into header
ring-buffer: Fix kernel-doc
ftrace: Fix char print issue in print_ip_ins()
noteworthy one being some additional wakeups in cap handling code, and
a messenger cleanup.
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Merge tag 'ceph-for-6.1-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"A quiet round this time: several assorted filesystem fixes, the most
noteworthy one being some additional wakeups in cap handling code, and
a messenger cleanup"
* tag 'ceph-for-6.1-rc1' of https://github.com/ceph/ceph-client:
ceph: remove Sage's git tree from documentation
ceph: fix incorrectly showing the .snap size for stat
ceph: fail the open_by_handle_at() if the dentry is being unlinked
ceph: increment i_version when doing a setattr with caps
ceph: Use kcalloc for allocating multiple elements
ceph: no need to wait for transition RDCACHE|RD -> RD
ceph: fail the request if the peer MDS doesn't support getvxattr op
ceph: wake up the waiters if any new caps comes
libceph: drop last_piece flag from ceph_msg_data_cursor
- New Features:
- Add NFSv4.2 xattr tracepoints
- Replace xprtiod WQ in rpcrdma
- Flexfiles cancels I/O on layout recall or revoke
- Bugfixes and Cleanups:
- Directly use ida_alloc() / ida_free()
- Don't open-code max_t()
- Prefer using strscpy over strlcpy
- Remove unused forward declarations
- Always return layout states on flexfiles layout return
- Have LISTXATTR treat NFS4ERR_NOXATTR as an empty reply instead of error
- Allow more xprtrdma memory allocations to fail without triggering a reclaim
- Various other xprtrdma clean ups
- Fix rpc_killall_tasks() races
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Merge tag 'nfs-for-6.1-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"New Features:
- Add NFSv4.2 xattr tracepoints
- Replace xprtiod WQ in rpcrdma
- Flexfiles cancels I/O on layout recall or revoke
Bugfixes and Cleanups:
- Directly use ida_alloc() / ida_free()
- Don't open-code max_t()
- Prefer using strscpy over strlcpy
- Remove unused forward declarations
- Always return layout states on flexfiles layout return
- Have LISTXATTR treat NFS4ERR_NOXATTR as an empty reply instead of
error
- Allow more xprtrdma memory allocations to fail without triggering a
reclaim
- Various other xprtrdma clean ups
- Fix rpc_killall_tasks() races"
* tag 'nfs-for-6.1-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (27 commits)
NFSv4/flexfiles: Cancel I/O if the layout is recalled or revoked
SUNRPC: Add API to force the client to disconnect
SUNRPC: Add a helper to allow pNFS drivers to selectively cancel RPC calls
SUNRPC: Fix races with rpc_killall_tasks()
xprtrdma: Fix uninitialized variable
xprtrdma: Prevent memory allocations from driving a reclaim
xprtrdma: Memory allocation should be allowed to fail during connect
xprtrdma: MR-related memory allocation should be allowed to fail
xprtrdma: Clean up synopsis of rpcrdma_regbuf_alloc()
xprtrdma: Clean up synopsis of rpcrdma_req_create()
svcrdma: Clean up RPCRDMA_DEF_GFP
SUNRPC: Replace the use of the xprtiod WQ in rpcrdma
NFSv4.2: Add a tracepoint for listxattr
NFSv4.2: Add tracepoints for getxattr, setxattr, and removexattr
NFSv4.2: Move TRACE_DEFINE_ENUM(NFS4_CONTENT_*) under CONFIG_NFS_V4_2
NFSv4.2: Add special handling for LISTXATTR receiving NFS4ERR_NOXATTR
nfs: remove nfs_wait_atomic_killable() and nfs_write_prepare() declaration
NFSv4: remove nfs4_renewd_prepare_shutdown() declaration
fs/nfs/pnfs_nfs.c: fix spelling typo and syntax error in comment
NFSv4/pNFS: Always return layout stats on layout return for flexfiles
...
The '-t/-T' parameters seem to have been swapped:
-t/--trace[=file]: save the stopped trace
to [file|timerlat_trace.txt]
-T/--thread us: stop trace if the thread latency
is higher than the argument in us
Swap them back.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Link: https://lore.kernel.org/r/20221006084409.3882542-1-pierre.gondois@arm.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The devm_request_region() function does not return error pointers, it
returns NULL on error.
Fixes: 914d9b2711 ("sunhme: switch to devres")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Link: https://lore.kernel.org/r/Y0bWzJL8JknX8MUf@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The __prestera_nexthop_group_create() function returns NULL on error
and the prestera_nexthop_group_get() returns error pointers. Fix these
two checks.
Fixes: 0a23ae2371 ("net: marvell: prestera: Add router nexthops ABI")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/Y0bWq+7DoKK465z8@kili
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet reported a use-after-free related to the per-netns ehash
series. [0]
When we create a TCP socket from userspace, the socket always holds a
refcnt of the netns. This guarantees that a reqsk timer is always fired
before netns dismantle. Each reqsk has a refcnt of its listener, so the
listener is not freed before the reqsk, and the net is not freed before
the listener as well.
OTOH, when in-kernel users create a TCP socket, it might not hold a refcnt
of its netns. Thus, a reqsk timer can be fired after the netns dismantle
and access freed per-netns ehash.
To avoid the use-after-free, we need to clean up TCP_NEW_SYN_RECV sockets
in inet_twsk_purge() if the netns uses a per-netns ehash.
[0]: https://lore.kernel.org/netdev/CANn89iLXMup0dRD_Ov79Xt8N9FM0XdhCHEN05sf3eLwxKweM6w@mail.gmail.com/
BUG: KASAN: use-after-free in tcp_or_dccp_get_hashinfo
include/net/inet_hashtables.h:181 [inline]
BUG: KASAN: use-after-free in reqsk_queue_unlink+0x320/0x350
net/ipv4/inet_connection_sock.c:913
Read of size 8 at addr ffff88807545bd80 by task syz-executor.2/8301
CPU: 1 PID: 8301 Comm: syz-executor.2 Not tainted
6.0.0-syzkaller-02757-gaf7d23f9d96a #0
Hardware name: Google Google Compute Engine/Google Compute Engine,
BIOS Google 09/22/2022
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:317 [inline]
print_report.cold+0x2ba/0x719 mm/kasan/report.c:433
kasan_report+0xb1/0x1e0 mm/kasan/report.c:495
tcp_or_dccp_get_hashinfo include/net/inet_hashtables.h:181 [inline]
reqsk_queue_unlink+0x320/0x350 net/ipv4/inet_connection_sock.c:913
inet_csk_reqsk_queue_drop net/ipv4/inet_connection_sock.c:927 [inline]
inet_csk_reqsk_queue_drop_and_put net/ipv4/inet_connection_sock.c:939 [inline]
reqsk_timer_handler+0x724/0x1160 net/ipv4/inet_connection_sock.c:1053
call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790
__run_timers kernel/time/timer.c:1768 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
__do_softirq+0x1d0/0x9c8 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1107
</IRQ>
Fixes: d1e5e6408b ("tcp: Introduce optional per-netns ehash.")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20221012145036.74960-1-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiko Stuebner <heiko@sntech.de> says:
As noted by some people, some parts of the recently added extensions
(svpbmt, zicbom) + t-head errata could use some styling upgrades.
So this series provides these.
changes in v2:
- add patch also converting cpufeature probe to BIT()
- update commit message in patch1 (Conor)
Heiko Stuebner (5):
riscv: cleanup svpbmt cpufeature probing
riscv: drop some idefs from CMO initialization
riscv: use BIT() macros in t-head errata init
riscv: use BIT() marco for cpufeature probing
riscv: check for kernel config option in t-head memory types errata
arch/riscv/errata/thead/errata.c | 14 ++++++-----
arch/riscv/include/asm/cacheflush.h | 2 ++
arch/riscv/kernel/cpufeature.c | 39 ++++++++++++-----------------
3 files changed, 26 insertions(+), 29 deletions(-)
Link: https://lore.kernel.org/r/20220905111027.2463297-1-heiko@sntech.de
* b4-shazam-merge:
riscv: check for kernel config option in t-head memory types errata
riscv: use BIT() marco for cpufeature probing
riscv: use BIT() macros in t-head errata init
riscv: drop some idefs from CMO initialization
riscv: cleanup svpbmt cpufeature probing
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
The t-head variant of page-based memory types should also check first
for the enabled kernel config option.
Fixes: a35707c3d8 ("riscv: add memory-type errata for T-Head")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20220905111027.2463297-6-heiko@sntech.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Wrapping things in #ifdefs makes the code harder to read
while we also have IS_ENABLED() macros to do this in regular code
and the extension detection is not _that_ runtime critical.
So define a stub for riscv_noncoherent_supported() in the
non-CONFIG_RISCV_DMA_NONCOHERENT case and move the code to
us IS_ENABLED.
Suggested-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20220905111027.2463297-3-heiko@sntech.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
For better readability (and compile time coverage) use IS_ENABLED
instead of ifdef and drop the new unneeded switch statement.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20220905111027.2463297-2-heiko@sntech.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
lld since llvm:6611d58f5bbc ("[ELF] Relax R_RISCV_ALIGN"), which will be
included in the 15.0.0 release, has implemented some RISC-V linker
relaxation. -mno-relax is no longer needed in
KBUILD_CFLAGS/KBUILD_AFLAGS to suppress R_RISCV_ALIGN which older lld
can not handle:
ld.lld: error: capability.c:(.fixup+0x0): relocation R_RISCV_ALIGN
requires unimplemented linker relaxation; recompile with -mno-relax
but the .o is already compiled with -mno-relax
Signed-off-by: Fangrui Song <maskray@google.com>
Link: https://lore.kernel.org/r/20220710071117.446112-1-maskray@google.com/
Link: https://lore.kernel.org/r/20220918092933.19943-1-palmer@rivosinc.com
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Improve code readability by using existing macros:
Replace hardcoded alignment computations (e.g. (len + 7) & ~0x7) by
ALIGN()/IS_ALIGNED() macros.
Also replace (DIV_ROUND_UP(len, 8) * 8) with ALIGN(len, 8), which, if
not optimized by the compiler, has the overhead of a multiplication
and a division. Do the same for roundup() by replacing it by round_up()
(division-less version, but requires the multiple to be a power of 2,
which is always the case for us).
And remove some unnecessary checks where !IS_ALIGNED() would fit, but
calling round_up() directly is fine as it's a no-op if the value is
already aligned.
Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This allows us to use cached attributes for the entries in a cached
directory for as long as a lease is held on the directory itself.
Previously we have always allowed "used cached attributes for 1 second"
but this extends this to the lifetime of the lease as well as making the
caching safer.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This expands the directory caching to now cache an open handle for all
directories (up to a maximum) and not just the root directory.
In this patch, locking and refcounting is intended to work as so:
The main function to get a reference to a cached handle is
find_or_create_cached_dir() called from open_cached_dir()
These functions are protected under the cfid_list_lock spin-lock
to make sure we do not race creating new references for cached dirs
with deletion of expired ones.
An successful open_cached_dir() will take out 2 references to the cfid if
this was the very first and successful call to open the directory and
it acquired a lease from the server.
One reference is for the lease and the other is for the cfid that we
return. The is lease reference is tracked by cfid->has_lease.
If the directory already has a handle with an active lease, then we just
take out one new reference for the cfid and return it.
It can happen that we have a thread that tries to open a cached directory
where we have a cfid already but we do not, yet, have a working lease. In
this case we will just return NULL, and this the caller will fall back to
the case when no handle was available.
In this model the total number of references we have on a cfid is
1 for while the handle is open and we have a lease, and one additional
reference for each open instance of a cfid.
Once we get a lease break (cached_dir_lease_break()) we remove the
cfid from the list under the spinlock. This prevents any new threads to
use it, and we also call smb2_cached_lease_break() via the work_queue
in order to drop the reference we got for the lease (we drop it outside
of the spin-lock.)
Anytime a thread calls close_cached_dir() we also drop a reference to the
cfid.
When the last reference to the cfid is released smb2_close_cached_fid()
will be invoked which will drop the reference ot the dentry we held for
this cfid and it will also, if we the handle is open/has a lease
also call SMB2_close() to close the handle on the server.
Two events require special handling:
invalidate_all_cached_dirs() this function is called from SMB2_tdis()
and cifs_mark_open_files_invalid().
In both cases the tcon is either gone already or will be shortly so
we do not need to actually close the handles. They will be dropped
server side as part of the tcon dropping.
But we have to be careful about a potential race with a concurrent
lease break so we need to take out additional refences to avoid the
cfid from being freed while we are still referencing it.
free_cached_dirs() which is called from tconInfoFree().
This is called quite late in the umount process so there should no longer
be any open handles or files and we can just free all the remaining data.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Prevent copying past @data buffer in smb2_validate_and_copy_iov() as
the output buffer in @iov might be potentially bigger and thus copying
more bytes than requested in @minbufsize.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Fix uninitialised variable @idata when calling smb2_compound_op() with
SMB2_OP_POSIX_QUERY_INFO.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
When creating inode for symlink, the client used to send below
requests to fill it in:
* create+query_info+close (STATUS_STOPPED_ON_SYMLINK)
* create(+reparse_flag)+query_info+close (set file attrs)
* create+ioctl(get_reparse)+close (query reparse tag)
and then for every access to the symlink dentry, the ->link() method
would send another:
* create+ioctl(get_reparse)+close (parse symlink)
So, in order to improve:
(i) Get rid of unnecessary roundtrips and then resolve symlinks as
follows:
* create+query_info+close (STATUS_STOPPED_ON_SYMLINK +
parse symlink + get reparse tag)
* create(+reparse_flag)+query_info+close (set file attrs)
(ii) Set the resolved symlink target directly in inode->i_link and
use simple_get_link() for ->link() to simply return it.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
When server does not return network interfaces, clarify the
message to indicate that "multichannel not available" not just
that "empty network interface returned by server ..."
Suggested-by: Tom Talpey <tom@talpey.com>
Reviewed-by: Bharath SM <bharathsm@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
BZ: 215375
Fixes: 76a3c92ec9 ("cifs: remove support for NTLM and weaker authentication algorithms")
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Zhu Lingshan has been writing and reviewing ifcvf patches for
a while now, add as reviewer.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Zhu Lingshan <lingshan.zhu@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
commit 71491c54ea ("virtio_pci: don't try to use intxif pin is zero")
breaks virtio_pci on powerpc, when running as a qemu guest.
vp_find_vqs() bails out because pci_dev->pin == 0.
But pci_dev->irq is populated correctly, so vp_find_vqs_intx() would
succeed if we called it - which is what the code used to do.
This seems to happen because pci_dev->pin is not populated in
pci_assign_irq(). A PCI core bug? Maybe.
However Linus said:
I really think that that is basically the only time you should use
that 'pci_dev->pin' thing: it basically exists not for "does this
device have an IRQ", but for "what is the routing of this irq on this
device".
and
The correct way to check for "no irq" doesn't use NO_IRQ at all, it just does
if (dev->irq) ...
so let's just check irq and be done with it.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Fixes: 71491c54ea ("virtio_pci: don't try to use intxif pin is zero")
Cc: "Angus Chen" <angus.chen@jaguarmicro.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221012220312.308522-1-mst@redhat.com>
The recently moved dtl code must be compiled-in if
CONFIG_VIRT_CPU_ACCOUNTING_NATIVE=y even if CONFIG_DTL=n.
Fixes: 6ba5aa541a ("powerpc/pseries: Move dtl scanning and steal time accounting to pseries platform")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221013073131.1485742-1-npiggin@gmail.com
It's possible for an interrupt returning to an irqs-disabled context to
lose a pending soft-masked irq because it branches to part of the exit
code for irqs-enabled contexts, which is meant to clear only the
PACA_IRQS_HARD_DIS flag from PACAIRQHAPPENED by zeroing the byte. This
just looks like a simple thinko from a recent commit (if there was no
hard mask pending, there would be no reason to clear it anyway).
This also adds comment to the code that actually does need to clear the
flag.
Fixes: e485f6c751 ("powerpc/64/interrupt: Fix return to masked context after hard-mask irq becomes pending")
Reported-by: Sachin Sant <sachinp@linux.ibm.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221013064418.1311104-1-npiggin@gmail.com
This has only the fixes for the scan parsing issues.
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Merge tag 'wireless-2022-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes Berg says:
====================
More wireless fixes for 6.1
This has only the fixes for the scan parsing issues.
* tag 'wireless-2022-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: cfg80211: update hidden BSSes to avoid WARN_ON
wifi: mac80211: fix crash in beacon protection for P2P-device
wifi: mac80211_hwsim: avoid mac80211 warning on bad rate
wifi: cfg80211: avoid nontransmitted BSS list corruption
wifi: cfg80211: fix BSS refcounting bugs
wifi: cfg80211: ensure length byte is present before access
wifi: mac80211: fix MBSSID parsing use-after-free
wifi: cfg80211/mac80211: reject bad MBSSID elements
wifi: cfg80211: fix u8 overflow in cfg80211_update_notlisted_nontrans()
====================
Link: https://lore.kernel.org/r/20221013100522.46346-1-johannes@sipsolutions.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
I don't think we can actually die() without a regs pointer, but the
compiler was warning about a NULL check after a dereference. It seems
prudent to just avoid the possibly-NULL dereference, given that when
die()ing the system is already toast so who knows how we got there.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220920200037.6727-1-palmer@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
kmap_to_page() is used to get the page for a virtual address which may
be kmap'ed. Unfortunately, kmap_local_page() stores mappings in a
thread local array separate from kmap(). These mappings were not
checked by the call.
Check the kmap_local_page() mappings and return the page if found.
Because it is intended to remove kmap_to_page() add a warn on once to
the kmap checks to flag potential issues early.
NOTE Due to 32bit x86 use of kmap local in iomap atmoic, KMAP_LOCAL does
not require HIGHMEM to be set. Therefore the support calls required a
new KMAP_LOCAL section to fix 0day build errors.
[akpm@linux-foundation.org: fix warning]
Link: https://lkml.kernel.org/r/20221006040555.1502679-1-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: kernel test robot <lkp@intel.com>
Cc: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
PGFREE and PGALLOC represent the number of freed and allocated pages. So
the page order must be considered.
Link: https://lkml.kernel.org/r/20221006101540.40686-1-laoar.shao@gmail.com
Fixes: 44042b4498 ("mm/page_alloc: allow high-order pages to be stored on the per-cpu lists")
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
It's not obvious why we had a write check for each of the missing
messages, especially when it should be a locking op. Add a rich comment
for that, and also try to explain its good side and limitations, so that
if someone hit it again for either a bug or a different glibc impl
there'll be some clue to start with.
Link: https://lkml.kernel.org/r/20221004193400.110155-4-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Conor Dooley
Palmer Dabbelt
Jisheng Zhang
Greentime Hu
Zong Li
Ben Dooks
Linus Torvalds
Pierre Gondois
Dan Carpenter
Eric Dumazet
Kuniyuki Iwashima
Frank Rowand
Heiko Stuebner
Fangrui Song
Enzo Matsumiya
Ronnie Sahlberg
Paulo Alcantara
Steve French
Michael S. Tsirkin
Nicholas Piggin
Paolo Abeni
Johannes Berg
Ira Weiny
Yafang Shao
Peter Xu