exp_ddgst is of type __le32, &cmd->exp_ddgst + cmd->offset increases
&cmd->exp_ddgst by 4 * cmd->offset, fix this by type casting
&cmd->exp_ddgst to u8 *.
Fixes: 872d26a391 ("nvmet-tcp: add NVMe over TCP target driver")
Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
ddgst is of type __le32, &req->ddgst + req->offset
increases &req->ddgst by 4 * req->offset, fix this by
type casting &req->ddgst to u8 *.
Fixes: 3f2304f8c6 ("nvme-tcp: add NVMe over TCP host driver")
Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
With commit db5ad6b7f8 ("nvme-tcp: try to send request in queue_rq
context") r2t and response PDU can get processed while send function
is executing.
Current data digest send code uses req->offset after kernel_sendmsg(),
this creates a race condition where req->offset gets reset before it
is used in send function.
This can happen in two cases -
1. Target sends r2t PDU which resets req->offset.
2. Target send response PDU which completes the req and then req is
used for a new command, nvme_tcp_setup_cmd_pdu() resets req->offset.
Fix this by storing req->offset in a local variable and using
this local variable after kernel_sendmsg().
Fixes: db5ad6b7f8 ("nvme-tcp: try to send request in queue_rq context")
Signed-off-by: Varun Prakash <varun@chelsio.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
One last set of small fixes for the soc tree:
- Incorrect ethernet phy settings found on i.mx and
allwinner platforms
- a revert for a Qualcomm DT change that caused a boot
regression
- four patches for incorrect settings in i.MX DT files
- new MAINTAINER file entries for dhcom boards
- a Kconfig fix for a reset driver that became unselectable
- three more code changes for bugs in reset drivers
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Merge tag 'arm-soc-fixes-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"One last set of small fixes for the soc tree:
- Incorrect ethernet phy settings found on i.mx and allwinner
platforms
- a revert for a Qualcomm DT change that caused a boot regression
- four patches for incorrect settings in i.MX DT files
- new MAINTAINER file entries for dhcom boards
- a Kconfig fix for a reset driver that became unselectable
- three more code changes for bugs in reset drivers"
* tag 'arm-soc-fixes-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
MAINTAINERS: Add maintainers for DHCOM i.MX6 and DHCOM/DHCOR STM32MP1
Revert "arm64: dts: qcom: sm8250: remove bus clock from the mdss node for sm8250 target"
arm64: dts: imx8mm-kontron: Fix connection type for VSC8531 RGMII PHY
arm64: dts: imx8mm-kontron: Fix CAN SPI clock frequency
arm64: dts: imx8mm-kontron: Fix polarity of reg_rst_eth2
arm64: dts: imx8mm-kontron: Set lower limit of VDD_SNVS to 800 mV
arm64: dts: imx8mm-kontron: Make sure SOC and DRAM supply voltages are correct
reset: socfpga: add empty driver allowing consumers to probe
reset: tegra-bpmp: Handle errors in BPMP response
reset: pistachio: Re-enable driver selection
reset: brcmstb-rescal: fix incorrect polarity of status bit
ARM: dts: sun7i: A20-olinuxino-lime2: Fix ethernet phy-mode
arm64: dts: allwinner: h5: NanoPI Neo 2: Fix ethernet node
When dispatching a zone append write request to a SCSI zoned block device,
if the target zone of the request is already locked, the device driver will
return BLK_STS_ZONE_RESOURCE and the request will be pushed back to the
hctx dipatch queue. The queue will be marked as RESTART in
dd_finish_request() and restarted in __blk_mq_free_request(). However, this
restart applies to the hctx of the completed request. If the requeued
request is on a different hctx, dispatch will no be retried until another
request is submitted or the next periodic queue run triggers, leading to up
to 30 seconds latency for the requeued request.
Fix this problem by scheduling a queue restart similarly to the
BLK_STS_RESOURCE case or when we cannot get the budget.
Also, consolidate the checks into the "need_resource" variable to simplify
the condition.
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Niklas Cassel <Niklas.Cassel@wdc.com>
Link: https://lore.kernel.org/r/20211026165127.4151055-1-naohiro.aota@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Daniel Borkmann says:
====================
pull-request: bpf 2021-10-26
We've added 12 non-merge commits during the last 7 day(s) which contain
a total of 23 files changed, 118 insertions(+), 98 deletions(-).
The main changes are:
1) Fix potential race window in BPF tail call compatibility check, from Toke Høiland-Jørgensen.
2) Fix memory leak in cgroup fs due to missing cgroup_bpf_offline(), from Quanyang Wang.
3) Fix file descriptor reference counting in generic_map_update_batch(), from Xu Kuohai.
4) Fix bpf_jit_limit knob to the max supported limit by the arch's JIT, from Lorenz Bauer.
5) Fix BPF sockmap ->poll callbacks for UDP and AF_UNIX sockets, from Cong Wang and Yucong Sun.
6) Fix BPF sockmap concurrency issue in TCP on non-blocking sendmsg calls, from Liu Jian.
7) Fix build failure of INODE_STORAGE and TASK_STORAGE maps on !CONFIG_NET, from Tejun Heo.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Fix potential race in tail call compatibility check
bpf: Move BPF_MAP_TYPE for INODE_STORAGE and TASK_STORAGE outside of CONFIG_NET
selftests/bpf: Use recv_timeout() instead of retries
net: Implement ->sock_is_readable() for UDP and AF_UNIX
skmsg: Extract and reuse sk_msg_is_readable()
net: Rename ->stream_memory_read to ->sock_is_readable
tcp_bpf: Fix one concurrency problem in the tcp_bpf_send_verdict function
cgroup: Fix memory leak caused by missing cgroup_bpf_offline
bpf: Fix error usage of map_fd and fdget() in generic_map_update_batch()
bpf: Prevent increasing bpf_jit_limit above max
bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT
bpf: Define bpf_jit_alloc_exec_limit for riscv JIT
====================
Link: https://lore.kernel.org/r/20211026201920.11296-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Lorenzo noticed that the code testing for program type compatibility of
tail call maps is potentially racy in that two threads could encounter a
map with an unset type simultaneously and both return true even though they
are inserting incompatible programs.
The race window is quite small, but artificially enlarging it by adding a
usleep_range() inside the check in bpf_prog_array_compatible() makes it
trivial to trigger from userspace with a program that does, essentially:
map_fd = bpf_create_map(BPF_MAP_TYPE_PROG_ARRAY, 4, 4, 2, 0);
pid = fork();
if (pid) {
key = 0;
value = xdp_fd;
} else {
key = 1;
value = tc_fd;
}
err = bpf_map_update_elem(map_fd, &key, &value, 0);
While the race window is small, it has potentially serious ramifications in
that triggering it would allow a BPF program to tail call to a program of a
different type. So let's get rid of it by protecting the update with a
spinlock. The commit in the Fixes tag is the last commit that touches the
code in question.
v2:
- Use a spinlock instead of an atomic variable and cmpxchg() (Alexei)
v3:
- Put lock and the members it protects into an embedded 'owner' struct (Daniel)
Fixes: 3324b584b6 ("ebpf: misc core cleanup")
Reported-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211026110019.363464-1-toke@redhat.com
bpf_types.h has BPF_MAP_TYPE_INODE_STORAGE and BPF_MAP_TYPE_TASK_STORAGE
declared inside #ifdef CONFIG_NET although they are built regardless of
CONFIG_NET. So, when CONFIG_BPF_SYSCALL && !CONFIG_NET, they are built
without the declarations leading to spurious build failures and not
registered to bpf_map_types making them unavailable.
Fix it by moving the BPF_MAP_TYPE for the two map types outside of
CONFIG_NET.
Reported-by: kernel test robot <lkp@intel.com>
Fixes: a10787e6d5 ("bpf: Enable task local storage for tracing programs")
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/YXG1cuuSJDqHQfRY@slm.duckdns.org
Cong Wang says:
====================
This patchset fixes ->poll() for sockets in sockmap and updates
selftests accordingly with select(). Please check each patch
for more details.
Fixes: c50524ec4e ("Merge branch 'sockmap: add sockmap support for unix datagram socket'")
Fixes: 89d69c5d0f ("Merge branch 'sockmap: introduce BPF_SK_SKB_VERDICT and support UDP'")
Acked-by: John Fastabend <john.fastabend@gmail.com>
---
v4: add a comment in udp_poll()
v3: drop sk_psock_get_checked()
reuse tcp_bpf_sock_is_readable()
v2: rename and reuse ->stream_memory_read()
fix a compile error in sk_psock_get_checked()
Cong Wang (3):
net: rename ->stream_memory_read to ->sock_is_readable
skmsg: extract and reuse sk_msg_is_readable()
net: implement ->sock_is_readable() for UDP and AF_UNIX
====================
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
We use non-blocking sockets in those tests, retrying for
EAGAIN is ugly because there is no upper bound for the packet
arrival time, at least in theory. After we fix poll() on
sockmap sockets, now we can switch to select()+recv().
Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211008203306.37525-5-xiyou.wangcong@gmail.com
Yucong noticed we can't poll() sockets in sockmap even
when they are the destination sockets of redirections.
This is because we never poll any psock queues in ->poll(),
except for TCP. With ->sock_is_readable() now we can
overwrite >sock_is_readable(), invoke and implement it for
both UDP and AF_UNIX sockets.
Reported-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211008203306.37525-4-xiyou.wangcong@gmail.com
The proto ops ->stream_memory_read() is currently only used
by TCP to check whether psock queue is empty or not. We need
to rename it before reusing it for non-TCP protocols, and
adjust the exsiting users accordingly.
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211008203306.37525-2-xiyou.wangcong@gmail.com
With two Msgs, msgA and msgB and a user doing nonblocking sendmsg calls (or
multiple cores) on a single socket 'sk' we could get the following flow.
msgA, sk msgB, sk
----------- ---------------
tcp_bpf_sendmsg()
lock(sk)
psock = sk->psock
tcp_bpf_sendmsg()
lock(sk) ... blocking
tcp_bpf_send_verdict
if (psock->eval == NONE)
psock->eval = sk_psock_msg_verdict
..
< handle SK_REDIRECT case >
release_sock(sk) < lock dropped so grab here >
ret = tcp_bpf_sendmsg_redir
psock = sk->psock
tcp_bpf_send_verdict
lock_sock(sk) ... blocking on B
if (psock->eval == NONE) <- boom.
psock->eval will have msgA state
The problem here is we dropped the lock on msgA and grabbed it with msgB.
Now we have old state in psock and importantly psock->eval has not been
cleared. So msgB will run whatever action was done on A and the verdict
program may never see it.
Fixes: 604326b41a ("bpf, sockmap: convert to generic sk_msg interface")
Signed-off-by: Liu Jian <liujian56@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20211012052019.184398-1-liujian56@huawei.com
TI's implementation does not service the watchdog even if the kernel
command line parameter omap_wdt.early_enable is set to 1. This patch
fixes the issue.
Signed-off-by: Walter Stoll <walter.stoll@duagon.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/88a8fe5229cd68fa0f1fd22f5d66666c1b7057a0.camel@duagon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
The MODULE_DEVICE_TABLE already creates proper alias for platform
driver. Having another MODULE_ALIAS causes the alias to be duplicated.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210917092024.19323-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
SBSA says of the generic watchdog:
All registers are 32 bits in size and should be accessed using 32-bit
reads and writes. If an access size other than 32 bits is used then
the results are IMPLEMENTATION DEFINED.
and for qemu, the implementation will only allow 32-bit accesses
resulting in a synchronous external abort when configuring the watchdog.
Use lo_hi_* accessors rather than a readq/writeq.
Fixes: abd3ac7902 ("watchdog: sbsa: Support architecture version 1")
Signed-off-by: Jamie Iles <quic_jiles@quicinc.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Link: https://lore.kernel.org/r/20210903112101.493552-1-quic_jiles@quicinc.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This reverts commit cb011044e3 ("watchdog: iTCO_wdt: Account for
rebooting on second timeout") and commit aec42642d9 ("watchdog: iTCO_wdt:
Fix detection of SMI-off case") since those patches cause a regression
on certain boards (https://bugzilla.kernel.org/show_bug.cgi?id=213809).
While this revert may result in some boards to only reset after twice
the configured timeout value, that is still better than a watchdog reset
after half the configured value.
Fixes: cb011044e3 ("watchdog: iTCO_wdt: Account for rebooting on second timeout")
Fixes: aec42642d9 ("watchdog: iTCO_wdt: Fix detection of SMI-off case")
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Mantas Mikulėnas <grawity@gmail.com>
Reported-by: Javier S. Pedro <debbugs@javispedro.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20211008003302.1461733-1-linux@roeck-us.net
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
While mmc0 enter suspend state, we need halt CQE to send legacy cmd(flush
cache) and disable cqe, for resume back, we enable CQE and not clear HALT
state.
In this case MediaTek mmc host controller will keep the value for HALT
state after CQE disable/enable flow, so the next CQE transfer after resume
will be timeout due to CQE is in HALT state, the log as below:
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: timeout for tag 2
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: ============ CQHCI REGISTER DUMP ===========
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Caps: 0x100020b6 | Version: 0x00000510
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Config: 0x00001103 | Control: 0x00000001
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Int stat: 0x00000000 | Int enab: 0x00000006
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Int sig: 0x00000006 | Int Coal: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: TDL base: 0xfd05f000 | TDL up32: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Doorbell: 0x8000203c | TCN: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Dev queue: 0x00000000 | Dev Pend: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Task clr: 0x00000000 | SSC1: 0x00001000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: SSC2: 0x00000001 | DCMD rsp: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: RED mask: 0xfdf9a080 | TERRI: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: Resp idx: 0x00000000 | Resp arg: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: CRNQP: 0x00000000 | CRNQDUN: 0x00000000
<4>.(4)[318:kworker/4:1H]mmc0: cqhci: CRNQIS: 0x00000000 | CRNQIE: 0x00000000
This change check HALT state after CQE enable, if CQE is in HALT state, we
will clear it.
Signed-off-by: Wenbin Mei <wenbin.mei@mediatek.com>
Cc: stable@vger.kernel.org
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: a4080225f5 ("mmc: cqhci: support for command queue enabled host")
Link: https://lore.kernel.org/r/20211026070812.9359-1-wenbin.mei@mediatek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Even though there are candiates value if can't find best value, it's
returned -EIO. It's not proper behavior.
If there is not best value, use a first candiate value to work eMMC.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Christian Hewitt <christianshewitt@gmail.com>
Cc: stable@vger.kernel.org
Fixes: c537a1c5ff ("mmc: dw_mmc: exynos: add variable delay tuning sequence")
Link: https://lore.kernel.org/r/20211022082106.1557-1-jh80.chung@samsung.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Before removing disk from sysfs, userspace still may change queue via
sysfs, such as switching elevator or setting wbt latency, both may
reinitialize wbt, then the warning in blk_free_queue_stats() will be
triggered since rq_qos_exit() is moved to del_gendisk().
Fixes the issue by moving draining queue & tearing down after disk is
removed from sysfs, at that time no one can come into queue's
store()/show().
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Fixes: 8e141f9eb8 ("block: drain file system I/O on del_gendisk")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20211026101204.2897166-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This reverts a clock change in the Qualcomm RB5 devicetree which in some
combinations of firmware and configuration causes the device to crash
during boot.
Data on an adjacent platform indicates that this is probably not be the
root cause of the problem, but this resolves the regression seen on RB5
and will allow the SM8250 platform to boot v5.15.
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Merge tag 'qcom-arm64-fixes-for-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes
Qualcomm ARM64 DTS one more fix for 5.15
This reverts a clock change in the Qualcomm RB5 devicetree which in some
combinations of firmware and configuration causes the device to crash
during boot.
Data on an adjacent platform indicates that this is probably not be the
root cause of the problem, but this resolves the regression seen on RB5
and will allow the SM8250 platform to boot v5.15.
* tag 'qcom-arm64-fixes-for-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
Revert "arm64: dts: qcom: sm8250: remove bus clock from the mdss node for sm8250 target"
Link: https://lore.kernel.org/r/20211025201213.1145348-1-bjorn.andersson@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add the missing endpoint max-packet sanity check to probe() to avoid
division by zero in lan78xx_tx_bh() in case a malicious device has
broken descriptors (or when doing descriptor fuzz testing).
Note that USB core will reject URBs submitted for endpoints with zero
wMaxPacketSize but that drivers doing packet-size calculations still
need to handle this (cf. commit 2548288b4f ("USB: Fix: Don't skip
endpoint descriptors with maxpacket=0")).
Fixes: 55d7de9de6 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Cc: stable@vger.kernel.org # 4.3
Cc: Woojung.Huh@microchip.com <Woojung.Huh@microchip.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Syzbot reported ODEBUG warning in batadv_nc_mesh_free(). The problem was
in wrong error handling in batadv_mesh_init().
Before this patch batadv_mesh_init() was calling batadv_mesh_free() in case
of any batadv_*_init() calls failure. This approach may work well, when
there is some kind of indicator, which can tell which parts of batadv are
initialized; but there isn't any.
All written above lead to cleaning up uninitialized fields. Even if we hide
ODEBUG warning by initializing bat_priv->nc.work, syzbot was able to hit
GPF in batadv_nc_purge_paths(), because hash pointer in still NULL. [1]
To fix these bugs we can unwind batadv_*_init() calls one by one.
It is good approach for 2 reasons: 1) It fixes bugs on error handling
path 2) It improves the performance, since we won't call unneeded
batadv_*_free() functions.
So, this patch makes all batadv_*_init() clean up all allocated memory
before returning with an error to no call correspoing batadv_*_free()
and open-codes batadv_mesh_free() with proper order to avoid touching
uninitialized fields.
Link: https://lore.kernel.org/netdev/000000000000c87fbd05cef6bcb0@google.com/ [1]
Reported-and-tested-by: syzbot+28b0702ada0bf7381f58@syzkaller.appspotmail.com
Fixes: c6c8fea297 ("net: Add batman-adv meshing protocol")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Acked-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The function tipc_crypto_key_rcv is used to parse MSG_CRYPTO messages
to receive keys from other nodes in the cluster in order to decrypt any
further messages from them.
This patch verifies that any supplied sizes in the message body are
valid for the received message.
Fixes: 1ef6f7c939 ("tipc: add automatic session key exchange")
Signed-off-by: Max VA <maxv@sentinelone.com>
Acked-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
During probing, the driver tries to get a list (mask) of supported
command types in port100_get_command_type_mask() function. The value
is u64 and 0 is treated as invalid mask (no commands supported). The
function however returns also -ERRNO as u64 which will be interpret as
valid command mask.
Return 0 on every error case of port100_get_command_type_mask(), so the
probing will stop.
Cc: <stable@vger.kernel.org>
Fixes: 0347a6ab30 ("NFC: port100: Commands mechanism implementation")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2021-10-25
This series contains updates to ice driver only.
Dave adds event handler for LAG NETDEV_UNREGISTER to unlink device from
link aggregate.
Yongxin Liu adds a check for PTP support during release which would
cause a call trace on non-PTP supported devices.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
During a testing of an user-space application which transmits UDP
multicast datagrams and utilizes multicast routing to send the UDP
datagrams out of defined network interfaces, I've found a multicast
router does not fill-in UDP checksum into locally produced, looped-back
and forwarded UDP datagrams, if an original output NIC the datagrams
are sent to has UDP TX checksum offload enabled.
The datagrams are sent malformed out of the NIC the datagrams have been
forwarded to.
It is because:
1. If TX checksum offload is enabled on the output NIC, UDP checksum
is not calculated by kernel and is not filled into skb data.
2. dev_loopback_xmit(), which is called solely by
ip_mc_finish_output(), sets skb->ip_summed = CHECKSUM_UNNECESSARY
unconditionally.
3. Since 35fc92a9 ("[NET]: Allow forwarding of ip_summed except
CHECKSUM_COMPLETE"), the ip_summed value is preserved during
forwarding.
4. If ip_summed != CHECKSUM_PARTIAL, checksum is not calculated during
a packet egress.
The minimum fix in dev_loopback_xmit():
1. Preserves skb->ip_summed CHECKSUM_PARTIAL. This is the
case when the original output NIC has TX checksum offload enabled.
The effects are:
a) If the forwarding destination interface supports TX checksum
offloading, the NIC driver is responsible to fill-in the
checksum.
b) If the forwarding destination interface does NOT support TX
checksum offloading, checksums are filled-in by kernel before
skb is submitted to the NIC driver.
c) For local delivery, checksum validation is skipped as in the
case of CHECKSUM_UNNECESSARY, thanks to skb_csum_unnecessary().
2. Translates ip_summed CHECKSUM_NONE to CHECKSUM_UNNECESSARY. It
means, for CHECKSUM_NONE, the behavior is unmodified and is there
to skip a looped-back packet local delivery checksum validation.
Signed-off-by: Cyril Strejc <cyril.strejc@skoda.cz>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There are missing braces in the function that verify controller parameters,
then an error is always returned when the parameter to select Microwire
frames operation is used on devices allowing it.
Signed-off-by: Thomas Perrot <thomas.perrot@bootlin.com>
Link: https://lore.kernel.org/r/20211022142104.1386379-1-thomas.perrot@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
We should not access request members after the last send, even to
determine if indeed it was the last data payload send. The reason is
that a completion could have arrived and trigger a new execution of the
request which overridden these members. This was fixed by commit
825619b09a ("nvme-tcp: fix possible use-after-completion").
Commit e371af033c broke that assumption again to address cases where
multiple r2t pdus are sent per request. To fix it, we need to record the
request data_sent and data_len and after the payload network send we
reference these counters to determine weather we should advance the
request iterator.
Fixes: e371af033c ("nvme-tcp: fix incorrect h2cdata pdu offset accounting")
Reported-by: Keith Busch <kbusch@kernel.org>
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
page_frag_free() won't completely release the memory
allocated for the commands, the cache page must be explicitly
freed by calling __page_frag_cache_drain().
This bug can be easily reproduced by repeatedly
executing the following command on the initiator:
$echo 1 > /sys/devices/virtual/nvme-fabrics/ctl/nvme0/reset_controller
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: John Meneghini <jmeneghi@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reading out the DP encoders' DPCD during booting or resume is only
required for enabled encoders: such encoders may be modesetted during
the initial commit and the link training this involves depends on an
initialized DPCD. For DDI encoders reading out the DPCD is skipped, do
the same on pre-DDI platforms.
Atm, the first DPCD readout without a sink connected - which is a likely
scneario if the encoder is disabled - leaves intel_dp->num_common_rates
at 0, which resulted in
intel_dp_sync_state()->intel_dp_max_common_rate()
in a
intel_dp->common_rates[-1]
access. This by definition results in an undefined behaviour, though to
my best knowledge in all HW/compiler configurations it actually results
in accessing the array item type value preceding the array. In this
case the preceding value happens to be intel_dp->num_common_rates,
which is 0, so this issue - by luck - didn't cause a user visible
problem.
Nevertheless it's still an undefined behaviour and in CONFIG_UBSAN
builds leads to a kernel BUG() (which revealed this problem for us),
hence CC:stable.
A related problem in case the encoder is enabled but the sink is not
connected or the DPCD readout fails is fixed by the next patch.
v2: Amend the commit message describing the root cause of the
CONFIG_UBSAN BUG().
Fixes: a532cde31d ("drm/i915/tc: Fix TypeC port init/resume time sanitization")
References: https://gitlab.freedesktop.org/drm/intel/-/issues/4297
Reported-and-tested-by: Mat Jonczyk <mat.jonczyk@o2.pl>
Cc: Mat Jonczyk <mat.jonczyk@o2.pl>
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211018094154.1407705-2-imre.deak@intel.com
(cherry picked from commit 4ec5ffc341)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Replace the unconditional clflush() with drm_clflush_virt_range()
which does the wbinvd() fallback when clflush is not available.
This time no justification is given for the clflush in the
offending commit.
Cc: stable@vger.kernel.org
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Fixes: 2c8ab3339e ("drm/i915: Pin timeline map after first timeline pin, v4.")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211014090941.12159-4-ville.syrjala@linux.intel.com
Reviewed-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 9ced12182d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This one is apparently a "clflush for good measure", so bit more
justification (if you can call it that) than some of the others.
Convert to drm_clflush_virt_range() again so that machines without
clflush will survive the ordeal.
Cc: stable@vger.kernel.org
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Hellström <thomas.hellstrom@intel.com> #v1
Fixes: 12ca695d2c ("drm/i915: Do not share hwsp across contexts any more, v8.")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211014090941.12159-3-ville.syrjala@linux.intel.com
Reviewed-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit af7b6d234e)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
When the driver fails to allocate a new Rx buffer, it passes an empty Rx
descriptor (contains zero address and size) to the device and marks it
as invalid by setting the skb pointer in the descriptor's metadata to
NULL.
After processing enough Rx descriptors, the driver will try to process
the invalid descriptor, but will return immediately seeing that the skb
pointer is NULL. Since the driver no longer passes new Rx descriptors to
the device, the Rx queue will eventually become full and the device will
start to drop packets.
Fix this by recycling the received packet if allocation of the new
packet failed. This means that allocation is no longer performed at the
end of the Rx routine, but at the start, before tearing down the DMA
mapping of the received packet.
Remove the comment about the descriptor being zeroed as it is no longer
correct. This is OK because we either use the descriptor as-is (when
recycling) or overwrite its address and size fields with that of the
newly allocated Rx buffer.
The issue was discovered when a process ("perf") consumed too much
memory and put the system under memory pressure. It can be reproduced by
injecting slab allocation failures [1]. After the fix, the Rx queue no
longer comes to a halt.
[1]
# echo 10 > /sys/kernel/debug/failslab/times
# echo 1000 > /sys/kernel/debug/failslab/interval
# echo 100 > /sys/kernel/debug/failslab/probability
FAULT_INJECTION: forcing a failure.
name failslab, interval 1000, probability 100, space 0, times 8
[...]
Call Trace:
<IRQ>
dump_stack_lvl+0x34/0x44
should_fail.cold+0x32/0x37
should_failslab+0x5/0x10
kmem_cache_alloc_node+0x23/0x190
__alloc_skb+0x1f9/0x280
__netdev_alloc_skb+0x3a/0x150
mlxsw_pci_rdq_skb_alloc+0x24/0x90
mlxsw_pci_cq_tasklet+0x3dc/0x1200
tasklet_action_common.constprop.0+0x9f/0x100
__do_softirq+0xb5/0x252
irq_exit_rcu+0x7a/0xa0
common_interrupt+0x83/0xa0
</IRQ>
asm_common_interrupt+0x1e/0x40
RIP: 0010:cpuidle_enter_state+0xc8/0x340
[...]
mlxsw_spectrum2 0000:06:00.0: Failed to alloc skb for RDQ
Fixes: eda6500a98 ("mlxsw: Add PCI bus implementation")
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/20211024064014.1060919-1-idosch@idosch.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Originally all DAX access when through block_device operations and thus
needed a queue reference. But since commit cccbce6715
("filesystem-dax: convert to dax_direct_access()") all this happens at
the DAX device level which uses its own refcounting. Having the external
refcount thus wasn't needed but has otherwise been harmless for long
time.
But now that "block: drain file system I/O on del_gendisk" waits for
q_usage_count to reach 0 in del_gendisk this whole scheme can't work
anymore (and pmem is the only driver abusing q_usage_count like that).
So switch to the internal reference and remove the unbalanced
blk_freeze_queue_start that is taken care of by del_gendisk.
Fixes: 8e141f9eb8 ("block: drain file system I/O on del_gendisk")
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211019073641.2323410-2-hch@lst.de
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
PTP is currently only supported on E810 devices, it is checked
in ice_ptp_init(). However, there is no check in ice_ptp_release().
For other E800 series devices, ice_ptp_release() will be wrongly executed.
Fix the following calltrace.
INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
Workqueue: ice ice_service_task [ice]
Call Trace:
dump_stack_lvl+0x5b/0x82
dump_stack+0x10/0x12
register_lock_class+0x495/0x4a0
? find_held_lock+0x3c/0xb0
__lock_acquire+0x71/0x1830
lock_acquire+0x1e6/0x330
? ice_ptp_release+0x3c/0x1e0 [ice]
? _raw_spin_lock+0x19/0x70
? ice_ptp_release+0x3c/0x1e0 [ice]
_raw_spin_lock+0x38/0x70
? ice_ptp_release+0x3c/0x1e0 [ice]
ice_ptp_release+0x3c/0x1e0 [ice]
ice_prepare_for_reset+0xcb/0xe0 [ice]
ice_do_reset+0x38/0x110 [ice]
ice_service_task+0x138/0xf10 [ice]
? __this_cpu_preempt_check+0x13/0x20
process_one_work+0x26a/0x650
worker_thread+0x3f/0x3b0
? __kthread_parkme+0x51/0xb0
? process_one_work+0x650/0x650
kthread+0x161/0x190
? set_kthread_struct+0x40/0x40
ret_from_fork+0x1f/0x30
Fixes: 4dd0d5c33c ("ice: add lock around Tx timestamp tracker flush")
Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
When the PF is a member of a link aggregate, and the driver
is removed, the process will hang unless we respond to the
NETDEV_UNREGISTER event that is sent to the event_handler
for LAG.
Add a case statement for the ice_lag_event_handler to unlink
the PF from the link aggregate.
Also remove code that was incorrectly applying a dev_hold to
peer_netdevs that were associated with the ice driver.
Fixes: df006dd4b1 ("ice: Add initial support framework for LAG")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Tested-by: Tony Brelinski <tony.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
This reverts commit 001ce9785c.
This upstream commit broke AOSP (post Android 12 merge) build
on RB5. The device either silently crashes into USB crash mode
after android boot animation or we see a blank blue screen
with following dpu errors in dmesg:
[ T444] hw recovery is not complete for ctl:3
[ T444] [drm:dpu_encoder_phys_vid_prepare_for_kickoff:539] [dpu error]enc31 intf1 ctl 3 reset failure: -22
[ T444] [drm:dpu_encoder_phys_vid_wait_for_commit_done:513] [dpu error]vblank timeout
[ T444] [drm:dpu_kms_wait_for_commit_done:454] [dpu error]wait for commit done returned -110
[ C7] [drm:dpu_encoder_frame_done_timeout:2127] [dpu error]enc31 frame done timeout
[ T444] [drm:dpu_encoder_phys_vid_wait_for_commit_done:513] [dpu error]vblank timeout
[ T444] [drm:dpu_kms_wait_for_commit_done:454] [dpu error]wait for commit done returned -110
Fixes: 001ce9785c ("arm64: dts: qcom: sm8250: remove bus clock from the mdss node for sm8250 target")
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211014135410.4136412-1-dmitry.baryshkov@linaro.org
Commit 110860541f ("mm/secretmem: use refcount_t instead of atomic_t")
attempted to fix the problem of secretmem_users wrapping to zero and
allowing suspend once again.
But it was reverted in commit 87066fdd2e ("Revert 'mm/secretmem: use
refcount_t instead of atomic_t'") because of the problems it caused - a
refcount_t was not semantically the right type to use.
Instead prevent secretmem_users from wrapping to zero by forbidding new
users if the number of users has wrapped from positive to negative.
This stops a long way short of reaching the necessary 4 billion users
where it wraps to zero again, so there's no need to be clever with
special anti-wrap types or checking the return value from atomic_inc().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Jordy Zomer <jordy@pwning.systems>
Cc: Kees Cook <keescook@chromium.org>,
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit efafec27c5 ("spi: Fix tegra20 build with CONFIG_PM=n") already
fixed the build without PM support once. There was an alternative fix
by Guenter in commit 2bab94090b ("spi: tegra20-slink: Declare runtime
suspend and resume functions conditionally"), and Mark then merged the
two correctly in ffb1e76f4f ("Merge tag 'v5.15-rc2' into spi-5.15").
But for some inexplicable reason, Mark then merged things _again_ in
commit 59c4e190b1 ("Merge tag 'v5.15-rc3' into spi-5.15"), and screwed
things up at that point, and the __maybe_unused attribute on
tegra_slink_runtime_resume() went missing.
Reinstate it, so that alpha (and other architectures without PM support)
builds cleanly again.
Btw, this is another prime example of how random back-merges are not
good. Just don't do them. Subsystem developers should not merge my
tree in any normal circumstances. Both of those merge commits pointed
to above are bad: even the one that got the merge result right doesn't
even mention _why_ it was done, and the one that got it wrong is
obviously broken.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Fix clang-related relocation warning in futex code
- Fix incorrect use of get_kernel_nofault()
- Fix bad code generation in __get_user_check() when kasan is enabled
- Ensure TLB function table is correctly aligned
- Remove duplicated string function definitions in decompressor
- Fix link-time orphan section warnings
- Fix old-style function prototype for arch_init_kprobes()
- Only warn about XIP address when not compile testing
- Handle BE32 big endian for keystone2 remapping
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
- Fix clang-related relocation warning in futex code
- Fix incorrect use of get_kernel_nofault()
- Fix bad code generation in __get_user_check() when kasan is enabled
- Ensure TLB function table is correctly aligned
- Remove duplicated string function definitions in decompressor
- Fix link-time orphan section warnings
- Fix old-style function prototype for arch_init_kprobes()
- Only warn about XIP address when not compile testing
- Handle BE32 big endian for keystone2 remapping
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9148/1: handle CONFIG_CPU_ENDIAN_BE32 in arch/arm/kernel/head.S
ARM: 9141/1: only warn about XIP address when not compile testing
ARM: 9139/1: kprobes: fix arch_init_kprobes() prototype
ARM: 9138/1: fix link warning with XIP + frame-pointer
ARM: 9134/1: remove duplicate memcpy() definition
ARM: 9133/1: mm: proc-macros: ensure *_tlb_fns are 4B aligned
ARM: 9132/1: Fix __get_user_check failure with ARM KASAN images
ARM: 9125/1: fix incorrect use of get_kernel_nofault()
ARM: 9122/1: select HAVE_FUTEX_CMPXCHG
A single fix in this pull request addressing an invalid error code
return in the sata_mv driver (from Zheyu).
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Merge tag 'libata-5.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull libata fix from Damien Le Moal:
"A single fix in this pull request addressing an invalid error code
return in the sata_mv driver (from Zheyu)"
* tag 'libata-5.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: sata_mv: Fix the error handling of mv_chip_id()
