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This reverts commit 2d52c58b9c.
We have had several folks complain that this causes hangs for them, which
is especially problematic as the commit has also hit stable already.
As no resolution seems to be forthcoming right now, revert the patch.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214503
Fixes: 2d52c58b9c ("block, bfq: honor already-setup queue merges")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This function copies strings around between multiple buffers
including a large on-stack array that causes a build warning
on 32-bit systems:
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c: In function 'hclge_dbg_dump_tm_pg':
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:782:1: error: the frame size of 1424 bytes is larger than 1400 bytes [-Werror=frame-larger-than=]
The function can probably be cleaned up a lot, to go back to
printing directly into the output buffer, but dynamically allocating
the structure is a simpler workaround for now.
Fixes: 04d96139dd ("net: hns3: refine function hclge_dbg_dump_tm_pri()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
According to the documentation the second resource is optional. But the
blamed commit ignores that and if the resource is not there it just
fails.
This patch reverts that to still allow the second resource to be
optional because other SoC have the some MDIO controller and doesn't
need to second resource.
Fixes: 672a1c3949 ("net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
unix_create1() returns NULL on error, and the callers assume that it never
fails for reasons other than out of memory. So, the callers always return
-ENOMEM when unix_create1() fails.
However, it also returns NULL when the number of af_unix sockets exceeds
twice the limit controlled by sysctl: fs.file-max. In this case, the
callers should return -ENFILE like alloc_empty_file().
This patch changes unix_create1() to return the correct error value instead
of NULL on error.
Out of curiosity, the assumption has been wrong since 1999 due to this
change introduced in 2.2.4 [0].
diff -u --recursive --new-file v2.2.3/linux/net/unix/af_unix.c linux/net/unix/af_unix.c
--- v2.2.3/linux/net/unix/af_unix.c Tue Jan 19 11:32:53 1999
+++ linux/net/unix/af_unix.c Sun Mar 21 07:22:00 1999
@@ -388,6 +413,9 @@
{
struct sock *sk;
+ if (atomic_read(&unix_nr_socks) >= 2*max_files)
+ return NULL;
+
MOD_INC_USE_COUNT;
sk = sk_alloc(PF_UNIX, GFP_KERNEL, 1);
if (!sk) {
[0]: https://cdn.kernel.org/pub/linux/kernel/v2.2/patch-2.2.4.gz
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
up->corkflag field can be read or written without any lock.
Annotate accesses to avoid possible syzbot/KCSAN reports.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When CONFIG_INET is not set, there are failing references to IPv4
functions, so make this driver depend on INET.
Fixes these build errors:
sparc64-linux-ld: drivers/net/ethernet/sun/sunvnet_common.o: in function `sunvnet_start_xmit_common':
sunvnet_common.c:(.text+0x1a68): undefined reference to `__icmp_send'
sparc64-linux-ld: drivers/net/ethernet/sun/sunvnet_common.o: in function `sunvnet_poll_common':
sunvnet_common.c:(.text+0x358c): undefined reference to `ip_send_check'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Aaron Young <aaron.young@oracle.com>
Cc: Rashmi Narasimhan <rashmi.narasimhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Don't print stats for which we haven't reserved space as it can
cause nasty memory bashing and related bad behaviors.
Fixes: aa620993b1 ("ionic: pull per-q stats work out of queue loops")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
nguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2021-09-27
This series contains updates to e100 driver only.
Jake corrects under allocation of register buffer due to incorrect
calculations and fixes buffer overrun of register dump.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Many architectures don't define virt_to_bus() any more, as drivers
should be using the dma-mapping interfaces where possible:
In file included from drivers/net/hamradio/dmascc.c:27:
drivers/net/hamradio/dmascc.c: In function 'tx_on':
drivers/net/hamradio/dmascc.c:976:30: error: implicit declaration of function 'virt_to_bus'; did you mean 'virt_to_fix'? [-Werror=implicit-function-declaration]
976 | virt_to_bus(priv->tx_buf[priv->tx_tail]) + n);
| ^~~~~~~~~~~
arch/arm/include/asm/dma.h:109:52: note: in definition of macro 'set_dma_addr'
109 | __set_dma_addr(chan, (void *)__bus_to_virt(addr))
| ^~~~
Add the Kconfig dependency to prevent this from being built on
architectures without virt_to_bus().
Fixes: bc1abb9e55 ("dmascc: use proper 'virt_to_bus()' rather than casting to 'int'")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
An object file cannot be built for both loadable module and built-in
use at the same time:
arm-linux-gnueabi-ld: drivers/net/ethernet/micrel/ks8851_common.o: in function `ks8851_probe_common':
ks8851_common.c:(.text+0xf80): undefined reference to `__this_module'
Change the ks8851_common code to be a standalone module instead,
and use Makefile logic to ensure this is built-in if at least one
of its two users is.
Fixes: 797047f875 ("net: ks8851: Implement Parallel bus operations")
Link: https://lore.kernel.org/netdev/20210125121937.3900988-1-arnd@kernel.org/
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix the case where the dst register maps to %rax as otherwise this produces
an incorrect mapping with the implementation in 981f94c3e9 ("bpf: Add
bitwise atomic instructions") as %rax is clobbered given it's part of the
cmpxchg as operand.
The issue is similar to b29dd96b90 ("bpf, x86: Fix BPF_FETCH atomic and/or/
xor with r0 as src") just that the case of dst register was missed.
Before, dst=r0 (%rax) src=r2 (%rsi):
[...]
c5: mov %rax,%r10
c8: mov 0x0(%rax),%rax <---+ (broken)
cc: mov %rax,%r11 |
cf: and %rsi,%r11 |
d2: lock cmpxchg %r11,0x0(%rax) <---+
d8: jne 0x00000000000000c8 |
da: mov %rax,%rsi |
dd: mov %r10,%rax |
[...] |
|
After, dst=r0 (%rax) src=r2 (%rsi): |
|
[...] |
da: mov %rax,%r10 |
dd: mov 0x0(%r10),%rax <---+ (fixed)
e1: mov %rax,%r11 |
e4: and %rsi,%r11 |
e7: lock cmpxchg %r11,0x0(%r10) <---+
ed: jne 0x00000000000000dd
ef: mov %rax,%rsi
f2: mov %r10,%rax
[...]
The remaining combinations were fine as-is though:
After, dst=r9 (%r15) src=r0 (%rax):
[...]
dc: mov %rax,%r10
df: mov 0x0(%r15),%rax
e3: mov %rax,%r11
e6: and %r10,%r11
e9: lock cmpxchg %r11,0x0(%r15)
ef: jne 0x00000000000000df _
f1: mov %rax,%r10 | (unneeded, but
f4: mov %r10,%rax _| not a problem)
[...]
After, dst=r9 (%r15) src=r4 (%rcx):
[...]
de: mov %rax,%r10
e1: mov 0x0(%r15),%rax
e5: mov %rax,%r11
e8: and %rcx,%r11
eb: lock cmpxchg %r11,0x0(%r15)
f1: jne 0x00000000000000e1
f3: mov %rax,%rcx
f6: mov %r10,%rax
[...]
The case of dst == src register is rejected by the verifier and
therefore not supported, but x86 JIT also handles this case just
fine.
After, dst=r0 (%rax) src=r0 (%rax):
[...]
eb: mov %rax,%r10
ee: mov 0x0(%r10),%rax
f2: mov %rax,%r11
f5: and %r10,%r11
f8: lock cmpxchg %r11,0x0(%r10)
fe: jne 0x00000000000000ee
100: mov %rax,%r10
103: mov %r10,%rax
[...]
Fixes: 981f94c3e9 ("bpf: Add bitwise atomic instructions")
Reported-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Co-developed-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Brendan Jackman <jackmanb@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
sid2groups keeps track of which stream id combinations belong to a
iommu_group to assign those correctly to devices.
When a iommu_group is freed a stale pointer will however remain in
sid2groups. This prevents devices with the same stream id combination
to ever be attached again (see below).
Fix that by creating a shadow copy of the stream id configuration
when a group is allocated for the first time and clear the sid2group
entry when that group is freed.
# echo 1 >/sys/bus/pci/devices/0000\:03\:00.0/remove
pci 0000:03:00.0: Removing from iommu group 1
# echo 1 >/sys/bus/pci/rescan
[...]
pci 0000:03:00.0: BAR 0: assigned [mem 0x6a0000000-0x6a000ffff 64bit pref]
pci 0000:03:00.0: BAR 2: assigned [mem 0x6a0010000-0x6a001ffff 64bit pref]
pci 0000:03:00.0: BAR 6: assigned [mem 0x6c0100000-0x6c01007ff pref]
tg3 0000:03:00.0: Failed to add to iommu group 1: -2
[...]
Fixes: 46d1fb072e ("iommu/dart: Add DART iommu driver")
Reported-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210924134502.15589-1-sven@svenpeter.dev
Signed-off-by: Joerg Roedel <jroedel@suse.de>
719a193356 ("iommu/vt-d: Tweak the description of a DMA fault") changed
the DMA fault reason from hex to decimal. It also added "0x" prefixes to
the PCI bus/device, e.g.,
- DMAR: [INTR-REMAP] Request device [00:00.5]
+ DMAR: [INTR-REMAP] Request device [0x00:0x00.5]
These no longer match dev_printk() and other similar messages in
dmar_match_pci_path() and dmar_acpi_insert_dev_scope().
Drop the "0x" prefixes from the bus and device addresses.
Fixes: 719a193356 ("iommu/vt-d: Tweak the description of a DMA fault")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20210903193711.483999-1-helgaas@kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210922054726.499110-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
apple_dart_tlb_flush_{all,walk} expect to get a struct apple_dart_domain
but instead get a struct iommu_domain right now. This breaks those two
functions and can lead to kernel panics like the one below.
DART can only invalidate the entire TLB and apple_dart_iotlb_sync will
already flush everything. There's no need to do that again inside those
two functions. Let's just drop them.
pci 0000:03:00.0: Removing from iommu group 1
Unable to handle kernel paging request at virtual address 0000000100000023
[...]
Call trace:
_raw_spin_lock_irqsave+0x54/0xbc
apple_dart_hw_stream_command.constprop.0+0x2c/0x130
apple_dart_tlb_flush_all+0x48/0x90
free_io_pgtable_ops+0x40/0x70
apple_dart_domain_free+0x2c/0x44
iommu_group_release+0x68/0xac
kobject_cleanup+0x4c/0x1fc
kobject_cleanup+0x14c/0x1fc
kobject_put+0x64/0x84
iommu_group_remove_device+0x110/0x180
iommu_release_device+0x50/0xa0
[...]
Fixes: 46d1fb072e ("iommu/dart: Add DART iommu driver")
Reported-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210921153934.35647-1-sven@svenpeter.dev
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The hrtimer callback pcsp_do_timer() prepares rearming of the timer with
hrtimer_forward(). hrtimer_forward() is intended to provide a mechanism to
forward the expiry time of the hrtimer by a multiple of the period argument
so that the expiry time greater than the time provided in the 'now'
argument.
pcsp_do_timer() invokes hrtimer_forward() with the current timer expiry
time as 'now' argument. That's providing a periodic timer expiry, but is
not really robust when the timer callback is delayed so that the resulting
new expiry time is already in the past which causes the callback to be
invoked immediately again. If the timer is delayed then the back to back
invocation is not really making it better than skipping the missed
periods. Sound is distorted in any case.
Use hrtimer_forward_now() which ensures that the next expiry is in the
future. This prevents hogging the CPU in the timer expiry code and allows
later on to remove hrtimer_forward() from the public interfaces.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: alsa-devel@alsa-project.org
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20210923153339.623208460@linutronix.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The same code is repeated in multiple locations. Create a helper
function for it.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210915172808.620546-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When the driver core defers the probe of a device, set the deferred
probe reason so that it's easier to debug. The deferred probe reason is
available in debugfs under devices_deferred.
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210915172808.620546-2-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It's not enough to set net.ipv4.conf.all.rp_filter=0, that does not override
a greater rp_filter value on the individual interfaces. We also need to set
net.ipv4.conf.default.rp_filter=0 before creating the interfaces. That way,
they'll also get their own rp_filter value of zero.
Fixes: 0fde56e438 ("selftests: bpf: add test_lwt_ip_encap selftest")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/b1cdd9d469f09ea6e01e9c89a6071c79b7380f89.1632386362.git.jbenc@redhat.com
When building bpf selftest with make -j, I'm randomly getting build failures
such as this one:
In file included from progs/bpf_flow.c:19:
[...]/tools/testing/selftests/bpf/tools/include/bpf/bpf_helpers.h:11:10: fatal error: 'bpf_helper_defs.h' file not found
#include "bpf_helper_defs.h"
^~~~~~~~~~~~~~~~~~~
The file that fails the build varies between runs but it's always in the
progs/ subdir.
The reason is a missing make dependency on libbpf for the .o files in
progs/. There was a dependency before commit 3ac2e20fba but that commit
removed it to prevent unneeded rebuilds. However, that only works if libbpf
has been built already; the 'wildcard' prerequisite does not trigger when
there's no bpf_helper_defs.h generated yet.
Keep the libbpf as an order-only prerequisite to satisfy both goals. It is
always built before the progs/ objects but it does not trigger unnecessary
rebuilds by itself.
Fixes: 3ac2e20fba ("selftests/bpf: BPF object files should depend only on libbpf headers")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/ee84ab66436fba05a197f952af23c98d90eb6243.1632758415.git.jbenc@redhat.com
If cgroup_sk_alloc() is called from interrupt context, then just assign the
root cgroup to skcd->cgroup. Prior to commit 8520e224f5 ("bpf, cgroups:
Fix cgroup v2 fallback on v1/v2 mixed mode") we would just return, and later
on in sock_cgroup_ptr(), we were NULL-testing the cgroup in fast-path, and
iff indeed NULL returning the root cgroup (v ?: &cgrp_dfl_root.cgrp). Rather
than re-adding the NULL-test to the fast-path we can just assign it once from
cgroup_sk_alloc() given v1/v2 handling has been simplified. The migration from
NULL test with returning &cgrp_dfl_root.cgrp to assigning &cgrp_dfl_root.cgrp
directly does /not/ change behavior for callers of sock_cgroup_ptr().
syzkaller was able to trigger a splat in the legacy netrom code base, where
the RX handler in nr_rx_frame() calls nr_make_new() which calls sk_alloc()
and therefore cgroup_sk_alloc() with in_interrupt() condition. Thus the NULL
skcd->cgroup, where it trips over on cgroup_sk_free() side given it expects
a non-NULL object. There are a few other candidates aside from netrom which
have similar pattern where in their accept-like implementation, they just call
to sk_alloc() and thus cgroup_sk_alloc() instead of sk_clone_lock() with the
corresponding cgroup_sk_clone() which then inherits the cgroup from the parent
socket. None of them are related to core protocols where BPF cgroup programs
are running from. However, in future, they should follow to implement a similar
inheritance mechanism.
Additionally, with a !CONFIG_CGROUP_NET_PRIO and !CONFIG_CGROUP_NET_CLASSID
configuration, the same issue was exposed also prior to 8520e224f5 due to
commit e876ecc67d ("cgroup: memcg: net: do not associate sock with unrelated
cgroup") which added the early in_interrupt() return back then.
Fixes: 8520e224f5 ("bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode")
Fixes: e876ecc67d ("cgroup: memcg: net: do not associate sock with unrelated cgroup")
Reported-by: syzbot+df709157a4ecaf192b03@syzkaller.appspotmail.com
Reported-by: syzbot+533f389d4026d86a2a95@syzkaller.appspotmail.com
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: syzbot+df709157a4ecaf192b03@syzkaller.appspotmail.com
Tested-by: syzbot+533f389d4026d86a2a95@syzkaller.appspotmail.com
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/bpf/20210927123921.21535-1-daniel@iogearbox.net
When a BPF object is compiled without BTF info (without -g),
trying to link such objects using bpftool causes a SIGSEGV due to
btf__get_nr_types accessing obj->btf which is NULL. Fix this by
checking for the NULL pointer, and return error.
Reproducer:
$ cat a.bpf.c
extern int foo(void);
int bar(void) { return foo(); }
$ cat b.bpf.c
int foo(void) { return 0; }
$ clang -O2 -target bpf -c a.bpf.c
$ clang -O2 -target bpf -c b.bpf.c
$ bpftool gen obj out a.bpf.o b.bpf.o
Segmentation fault (core dumped)
After fix:
$ bpftool gen obj out a.bpf.o b.bpf.o
libbpf: failed to find BTF info for object 'a.bpf.o'
Error: failed to link 'a.bpf.o': Unknown error -22 (-22)
Fixes: a46349227c (libbpf: Add linker extern resolution support for functions and global variables)
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210924023725.70228-1-memxor@gmail.com
BPF folks maintain these and they're not picked up by the current
MAINTAINERS entries.
Files caught by the added globs:
include/linux/btf.h
include/linux/btf_ids.h
include/uapi/linux/btf.h
Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210924193557.3081469-1-davemarchevsky@fb.com
When introducing CAP_BPF, bpf_jit_charge_modmem() was not changed to treat
programs with CAP_BPF as privileged for the purpose of JIT memory allocation.
This means that a program without CAP_BPF can block a program with CAP_BPF
from loading a program.
Fix this by checking bpf_capable() in bpf_jit_charge_modmem().
Fixes: 2c78ee898d ("bpf: Implement CAP_BPF")
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922111153.19843-1-lmb@cloudflare.com
This contains a fix for an UAPI error that happens when no IOMMU is
enabled, as well as a few build warning fixes and plugs a potential
memory leak.
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Merge tag 'drm/tegra/for-5.15-rc3' of ssh://git.freedesktop.org/git/tegra/linux into drm-fixes
drm/tegra: Fixes for v5.15-rc3
This contains a fix for an UAPI error that happens when no IOMMU is
enabled, as well as a few build warning fixes and plugs a potential
memory leak.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924143537.1341882-1-thierry.reding@gmail.com
commit 23e91d8b7c5a("cifs: rename cifs_common to smbfs_common") cause
the following warning from get_maintainer.pl.
./scripts/get_maintainer.pl --self-test=patterns complains:
warning: no file matches F: fs/cifs_common/
This patch rename cifs_common to smbfs_common in cifs and ksmbd entry.
Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
- Fix 'perf test' DWARF unwind for optimized builds.
- Fix 'perf test' 'Object code reading' when dealing with samples in @plt
symbols.
- Fix off-by-one directory paths in the ARM support code.
- Fix error message to eliminate confusion in 'perf config' when first creating
a config file.
- 'perf iostat' fix for system wide operation.
- Fix printing of metrics when 'perf iostat' is used with one or more
iio_root_ports and unconnected cpus (using -C).
- Fix several typos in the documentation files.
- Fix spelling mistake "icach" -> "icache" in the power8 JSON vendor files.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v5.15-2021-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull more perf tools fixes from Arnaldo Carvalho de Melo:
- Fix 'perf test' DWARF unwind for optimized builds.
- Fix 'perf test' 'Object code reading' when dealing with samples in
@plt symbols.
- Fix off-by-one directory paths in the ARM support code.
- Fix error message to eliminate confusion in 'perf config' when first
creating a config file.
- 'perf iostat' fix for system wide operation.
- Fix printing of metrics when 'perf iostat' is used with one or more
iio_root_ports and unconnected cpus (using -C).
- Fix several typos in the documentation files.
- Fix spelling mistake "icach" -> "icache" in the power8 JSON vendor
files.
* tag 'perf-tools-fixes-for-v5.15-2021-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf iostat: Fix Segmentation fault from NULL 'struct perf_counts_values *'
perf iostat: Use system-wide mode if the target cpu_list is unspecified
perf config: Refine error message to eliminate confusion
perf doc: Fix typos all over the place
perf arm: Fix off-by-one directory paths.
perf vendor events powerpc: Fix spelling mistake "icach" -> "icache"
perf tests: Fix flaky test 'Object code reading'
perf test: Fix DWARF unwind for optimized builds.
- missing TLB flush
- nested virtualization fixes for SMM (secure boot on nested hypervisor)
and other nested SVM fixes
- syscall fuzzing fixes
- live migration fix for AMD SEV
- mirror VMs now work for SEV-ES too
- fixes for reset
- possible out-of-bounds access in IOAPIC emulation
- fix enlightened VMCS on Windows 2022
ARM:
- Add missing FORCE target when building the EL2 object
- Fix a PMU probe regression on some platforms
Generic:
- KCSAN fixes
selftests:
- random fixes, mostly for clang compilation
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"A bit late... I got sidetracked by back-from-vacation routines and
conferences. But most of these patches are already a few weeks old and
things look more calm on the mailing list than what this pull request
would suggest.
x86:
- missing TLB flush
- nested virtualization fixes for SMM (secure boot on nested
hypervisor) and other nested SVM fixes
- syscall fuzzing fixes
- live migration fix for AMD SEV
- mirror VMs now work for SEV-ES too
- fixes for reset
- possible out-of-bounds access in IOAPIC emulation
- fix enlightened VMCS on Windows 2022
ARM:
- Add missing FORCE target when building the EL2 object
- Fix a PMU probe regression on some platforms
Generic:
- KCSAN fixes
selftests:
- random fixes, mostly for clang compilation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (43 commits)
selftests: KVM: Explicitly use movq to read xmm registers
selftests: KVM: Call ucall_init when setting up in rseq_test
KVM: Remove tlbs_dirty
KVM: X86: Synchronize the shadow pagetable before link it
KVM: X86: Fix missed remote tlb flush in rmap_write_protect()
KVM: x86: nSVM: don't copy virt_ext from vmcb12
KVM: x86: nSVM: test eax for 4K alignment for GP errata workaround
KVM: x86: selftests: test simultaneous uses of V_IRQ from L1 and L0
KVM: x86: nSVM: restore int_vector in svm_clear_vintr
kvm: x86: Add AMD PMU MSRs to msrs_to_save_all[]
KVM: x86: nVMX: re-evaluate emulation_required on nested VM exit
KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry
KVM: x86: VMX: synthesize invalid VM exit when emulating invalid guest state
KVM: x86: nSVM: refactor svm_leave_smm and smm_enter_smm
KVM: x86: SVM: call KVM_REQ_GET_NESTED_STATE_PAGES on exit from SMM mode
KVM: x86: reset pdptrs_from_userspace when exiting smm
KVM: x86: nSVM: restore the L1 host state prior to resuming nested guest on SMM exit
KVM: nVMX: Filter out all unsupported controls when eVMCS was activated
KVM: KVM: Use cpumask_available() to check for NULL cpumask when kicking vCPUs
KVM: Clean up benign vcpu->cpu data races when kicking vCPUs
...
Compiling sb_watchdog needs to clearly define SIBYTE_HDR_FEATURES.
In arch/mips/sibyte/Platform like:
cflags-$(CONFIG_SIBYTE_BCM112X) += \
-I$(srctree)/arch/mips/include/asm/mach-sibyte \
-DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL
Otherwise, SIBYTE_HDR_FEATURES is SIBYTE_HDR_FMASK_ALL.
SIBYTE_HDR_FMASK_ALL is mean:
#define SIBYTE_HDR_FMASK_ALL SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL \
| SIBYTE_HDR_FMASK_1480_ALL)
So, If not limited to CPU_SB1, we will get such an error:
arch/mips/include/asm/sibyte/bcm1480_scd.h:261: error: "M_SPC_CFG_CLEAR" redefined [-Werror]
arch/mips/include/asm/sibyte/bcm1480_scd.h:262: error: "M_SPC_CFG_ENABLE" redefined [-Werror]
Fixes: da2a68b3eb ("watchdog: Enable COMPILE_TEST where possible")
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The recent block layer refactoring broke the way how the pmem driver
abused device_add_disk. Fix this by properly passing the attribute groups
to device_add_disk.
Fixes: 52b85909f8 ("block: fold register_disk into device_add_disk")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Darrick J. Wong <djwong@kernel.org>
Link: https://lore.kernel.org/r/20210922173431.2454024-2-hch@lst.de
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
When ACPI NFIT table is failing to populate correct numa information
on arm64, dax_kmem will get NUMA_NO_NODE from the NFIT driver.
Without this patch, pmem can't be probed as RAM devices on arm64 guest:
$ndctl create-namespace -fe namespace0.0 --mode=devdax --map=dev -s 1g -a 128M
kmem dax0.0: rejecting DAX region [mem 0x240400000-0x2bfffffff] with invalid node: -1
kmem: probe of dax0.0 failed with error -22
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jia He <justin.he@arm.com>
Cc: <stable@vger.kernel.org>
Fixes: c221c0b030 ("device-dax: "Hotplug" persistent memory for use like normal RAM")
Link: https://lore.kernel.org/r/20210922152919.6940-1-justin.he@arm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Commit 9d682ea6bc ("vboxsf: Fix the check for the old binary
mount-arguments struct") was meant to fix a build error due to sign
mismatch in 'char' and the use of character constants, but it just moved
the error elsewhere, in that on some architectures characters and signed
and on others they are unsigned, and that's just how the C standard
works.
The proper fix is a simple "don't do that then". The code was just
being silly and odd, and it should never have cared about signed vs
unsigned characters in the first place, since what it is testing is not
four "characters", but four bytes.
And the way to compare four bytes is by using "memcmp()".
Which compilers will know to just turn into a single 32-bit compare with
a constant, as long as you don't have crazy debug options enabled.
Link: https://lore.kernel.org/lkml/20210927094123.576521-1-arnd@kernel.org/
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If the CQE size of the user space is not the size supported by the
hardware, the creation of CQ should be stopped.
Fixes: 09a5f210f6 ("RDMA/hns: Add support for CQE in size of 64 Bytes")
Link: https://lore.kernel.org/r/20210927125557.15031-3-liangwenpeng@huawei.com
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
The size of CQE is different for different versions of hardware, so the
driver needs to specify the size of CQE explicitly.
Fixes: 09a5f210f6 ("RDMA/hns: Add support for CQE in size of 64 Bytes")
Link: https://lore.kernel.org/r/20210927125557.15031-2-liangwenpeng@huawei.com
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Pointers should be printed with %p or %px rather than cast to 'unsigned
long long' and printed with %llx. Change %llx to %p to print the secured
pointer.
Fixes: 042a00f93a ("IB/{ipoib,hfi1}: Add a timeout handler for rdma_netdev")
Link: https://lore.kernel.org/r/20210922134857.619602-1-qtxuning1999@sjtu.edu.cn
Signed-off-by: Guo Zhi <qtxuning1999@sjtu.edu.cn>
Acked-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
io-wq threads block all signals, except SIGKILL and SIGSTOP. We should not
need any extra checking of signal_pending or fatal_signal_pending, rely
exclusively on whether or not get_signal() tells us to exit.
The original debugging of this issue led to the false positive that we
were exiting on non-fatal signals, but that is not the case. The issue
was around races with nr_workers accounting.
Fixes: 87c1696655 ("io-wq: ensure we exit if thread group is exiting")
Fixes: 15e20db2e0 ("io-wq: only exit on fatal signals")
Reported-by: Eric W. Biederman <ebiederm@xmission.com>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Some apple controllers use the command id as an index to implementation
specific data structures and will fail if the value is out of bounds.
The nvme driver's recently introduced command sequence number breaks
this controller.
Provide a quirk so these spec incompliant controllers can function as
before. The driver will not have the ability to detect bad completions
when this quirk is used, but we weren't previously checking this anyway.
The quirk bit was selected so that it can readily apply to stable.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=214509
Cc: Sven Peter <sven@svenpeter.dev>
Reported-by: Orlando Chamberlain <redecorating@protonmail.com>
Reported-by: Aditya Garg <gargaditya08@live.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Sven Peter <sven@svenpeter.dev>
Link: https://lore.kernel.org/r/20210927154306.387437-1-kbusch@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The e100_get_regs function is used to implement a simple register dump
for the e100 device. The data is broken into a couple of MAC control
registers, and then a series of PHY registers, followed by a memory dump
buffer.
The total length of the register dump is defined as (1 + E100_PHY_REGS)
* sizeof(u32) + sizeof(nic->mem->dump_buf).
The logic for filling in the PHY registers uses a convoluted inverted
count for loop which counts from E100_PHY_REGS (0x1C) down to 0, and
assigns the slots 1 + E100_PHY_REGS - i. The first loop iteration will
fill in [1] and the final loop iteration will fill in [1 + 0x1C]. This
is actually one more than the supposed number of PHY registers.
The memory dump buffer is then filled into the space at
[2 + E100_PHY_REGS] which will cause that memcpy to assign 4 bytes past
the total size.
The end result is that we overrun the total buffer size allocated by the
kernel, which could lead to a panic or other issues due to memory
corruption.
It is difficult to determine the actual total number of registers
here. The only 8255x datasheet I could find indicates there are 28 total
MDI registers. However, we're reading 29 here, and reading them in
reverse!
In addition, the ethtool e100 register dump interface appears to read
the first PHY register to determine if the device is in MDI or MDIx
mode. This doesn't appear to be documented anywhere within the 8255x
datasheet. I can only assume it must be in register 28 (the extra
register we're reading here).
Lets not change any of the intended meaning of what we copy here. Just
extend the space by 4 bytes to account for the extra register and
continue copying the data out in the same order.
Change the E100_PHY_REGS value to be the correct total (29) so that the
total register dump size is calculated properly. Fix the offset for
where we copy the dump buffer so that it doesn't overrun the total size.
Re-write the for loop to use counting up instead of the convoluted
down-counting. Correct the mdio_read offset to use the 0-based register
offsets, but maintain the bizarre reverse ordering so that we have the
ABI expected by applications like ethtool. This requires and additional
subtraction of 1. It seems a bit odd but it makes the flow of assignment
into the register buffer easier to follow.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reported-by: Felicitas Hetzelt <felicitashetzelt@gmail.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
commit abf9b90205 ("e100: cleanup unneeded math") tried to simplify
e100_get_regs_len and remove a double 'divide and then multiply'
calculation that the e100_reg_regs_len function did.
This change broke the size calculation entirely as it failed to account
for the fact that the numbered registers are actually 4 bytes wide and
not 1 byte. This resulted in a significant under allocation of the
register buffer used by e100_get_regs.
Fix this by properly multiplying the register count by u32 first before
adding the size of the dump buffer.
Fixes: abf9b90205 ("e100: cleanup unneeded math")
Reported-by: Felicitas Hetzelt <felicitashetzelt@gmail.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
A reference to the carrier module was taken on every open but was only
released once when the final reference to the tty struct was dropped.
Fix this by taking the module reference and initialising the tty driver
data when installing the tty.
Fixes: 82a82340ba ("ipoctal: get carrier driver to avoid rmmod")
Cc: stable@vger.kernel.org # 3.18
Cc: Federico Vaga <federico.vaga@cern.ch>
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210917114622.5412-6-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the missing error handling when allocating the transmit buffer to
avoid dereferencing a NULL pointer in write() should the allocation
ever fail.
Fixes: ba4dc61fe8 ("Staging: ipack: add support for IP-OCTAL mezzanine board")
Cc: stable@vger.kernel.org # 3.5
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210917114622.5412-5-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Registration of the ipoctal tty devices is unlikely to fail, but if it
ever does, make sure not to deregister a never registered tty device
(and dereference a NULL pointer) when the driver is later unbound.
Fixes: 2afb41d9d3 ("Staging: ipack/devices/ipoctal: Check tty_register_device return value.")
Cc: stable@vger.kernel.org # 3.7
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210917114622.5412-4-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make sure to set the tty class-device driver data before registering the
tty to avoid having a racing open() dereference a NULL pointer.
Fixes: 9c1d784afc ("Staging: ipack/devices/ipoctal: Get rid of ipoctal_list.")
Cc: stable@vger.kernel.org # 3.7
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210917114622.5412-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The tty driver name is used also after registering the driver and must
specifically not be allocated on the stack to avoid leaking information
to user space (or triggering an oops).
Drivers should not try to encode topology information in the tty device
name but this one snuck in through staging without anyone noticing and
another driver has since copied this malpractice.
Fixing the ABI is a separate issue, but this at least plugs the security
hole.
Fixes: ba4dc61fe8 ("Staging: ipack: add support for IP-OCTAL mezzanine board")
Cc: stable@vger.kernel.org # 3.5
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210917114622.5412-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When updating the host's mask for its MSR_IA32_TSX_CTRL user return entry,
clear the mask in the found uret MSR instead of vmx->guest_uret_msrs[i].
Modifying guest_uret_msrs directly is completely broken as 'i' does not
point at the MSR_IA32_TSX_CTRL entry. In fact, it's guaranteed to be an
out-of-bounds accesses as is always set to kvm_nr_uret_msrs in a prior
loop. By sheer dumb luck, the fallout is limited to "only" failing to
preserve the host's TSX_CTRL_CPUID_CLEAR. The out-of-bounds access is
benign as it's guaranteed to clear a bit in a guest MSR value, which are
always zero at vCPU creation on both x86-64 and i386.
Cc: stable@vger.kernel.org
Fixes: 8ea8b8d6f8 ("KVM: VMX: Use common x86's uret MSR list as the one true list")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210926015545.281083-1-zhenzhong.duan@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This contains a few fixes for the sdm660 driver:
- sdm660: Fix id of slv_cnoc_mnoc_cfg
- sdm660: Correct NOC_QOS_PRIORITY shift and mask
- sdm660: Add missing a2noc qos clocks
Signed-off-by: Georgi Djakov <djakov@kernel.org>
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Merge tag 'icc-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-linus
Georgi writes:
interconnect fixes for v5.15
This contains a few fixes for the sdm660 driver:
- sdm660: Fix id of slv_cnoc_mnoc_cfg
- sdm660: Correct NOC_QOS_PRIORITY shift and mask
- sdm660: Add missing a2noc qos clocks
Signed-off-by: Georgi Djakov <djakov@kernel.org>
* tag 'icc-5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc:
interconnect: qcom: sdm660: Add missing a2noc qos clocks
dt-bindings: interconnect: sdm660: Add missing a2noc qos clocks
interconnect: qcom: sdm660: Correct NOC_QOS_PRIORITY shift and mask
interconnect: qcom: sdm660: Fix id of slv_cnoc_mnoc_cfg
This is a nuisance when CONFIG_WERROR is set, so drop the variable
declaration since the code that used it was removed.
../arch/nios2/kernel/setup.c: In function 'setup_arch':
../arch/nios2/kernel/setup.c:152:13: warning: unused variable 'dram_start' [-Wunused-variable]
152 | int dram_start;
Fixes: 7f7bc20bc4 ("nios2: Don't use _end for calculating min_low_pfn")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Andreas Oetken <andreas.oetken@siemens.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
