As John Fastabend reports [0], psock state tear-down can happen on receive
path *after* unlocking the socket, if the only other psock user, that is
sockmap or sockhash, releases its psock reference before tcp_bpf_recvmsg
does so:
tcp_bpf_recvmsg()
psock = sk_psock_get(sk) <- refcnt 2
lock_sock(sk);
...
sock_map_free() <- refcnt 1
release_sock(sk)
sk_psock_put() <- refcnt 0
Remove the lockdep check for socket lock in psock tear-down that got
introduced in 7e81a35302 ("bpf: Sockmap, ensure sock lock held during
tear down").
[0] https://lore.kernel.org/netdev/5e25dc995d7d_74082aaee6e465b441@john-XPS-13-9370.notmuch/
Fixes: 7e81a35302 ("bpf: Sockmap, ensure sock lock held during tear down")
Reported-by: syzbot+d73682fcf7fee6982fe3@syzkaller.appspotmail.com
Suggested-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
in the same manner as commit 690afc165b ("net: ip6_gre: fix moving
ip6gre between namespaces"), fix namespace moving as it was broken since
commit 2e15ea390e ("ip_gre: Add support to collect tunnel metadata.").
Indeed, the ip6_gre commit removed the local flag for collect_md
condition, so there is no reason to keep it for ip_gre/ip_tunnel.
this patch will fix both ip_tunnel and ip_gre modules.
Fixes: 2e15ea390e ("ip_gre: Add support to collect tunnel metadata.")
Signed-off-by: William Dauchy <w.dauchy@criteo.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Not sure how this got in here. git blame says the second assignment was
added in 3a9a57f6, but that commit also removed the first assignment.
Signed-off-by: Theodore Dubois <tblodt@icloud.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
As reported by Eric Dumazet, there are still some outstanding
cases where the driver does not handle TSO correctly when skb's
are over a certain size. Most cases have been fixed, this patch
should ensure that forwarded SKB's that are greater than
MAX_SINGLE_PACKET_SIZE - TX_OVERHEAD are software segmented
and handled correctly.
Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
do_div() does a 64-by-32 division. Use div64_long() instead of it
if the divisor is long, to avoid truncation to 32-bit.
And as a nice side effect also cleans up the function a bit.
Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netdev_register_kobject is calling device_initialize. In case of error
reference taken by device_initialize is not given up.
Drivers are supposed to call free_netdev in case of error. In non-error
case the last reference is given up there and device release sequence
is triggered. In error case this reference is kept and the release
sequence is never started.
Fix this by setting reg_state as NETREG_UNREGISTERED if registering
fails.
This is the rootcause for couple of memory leaks reported by Syzkaller:
BUG: memory leak unreferenced object 0xffff8880675ca008 (size 256):
comm "netdev_register", pid 281, jiffies 4294696663 (age 6.808s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<0000000058ca4711>] kmem_cache_alloc_trace+0x167/0x280
[<000000002340019b>] device_add+0x882/0x1750
[<000000001d588c3a>] netdev_register_kobject+0x128/0x380
[<0000000011ef5535>] register_netdevice+0xa1b/0xf00
[<000000007fcf1c99>] __tun_chr_ioctl+0x20d5/0x3dd0
[<000000006a5b7b2b>] tun_chr_ioctl+0x2f/0x40
[<00000000f30f834a>] do_vfs_ioctl+0x1c7/0x1510
[<00000000fba062ea>] ksys_ioctl+0x99/0xb0
[<00000000b1c1b8d2>] __x64_sys_ioctl+0x78/0xb0
[<00000000984cabb9>] do_syscall_64+0x16f/0x580
[<000000000bde033d>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[<00000000e6ca2d9f>] 0xffffffffffffffff
BUG: memory leak
unreferenced object 0xffff8880668ba588 (size 8):
comm "kobject_set_nam", pid 286, jiffies 4294725297 (age 9.871s)
hex dump (first 8 bytes):
6e 72 30 00 cc be df 2b nr0....+
backtrace:
[<00000000a322332a>] __kmalloc_track_caller+0x16e/0x290
[<00000000236fd26b>] kstrdup+0x3e/0x70
[<00000000dd4a2815>] kstrdup_const+0x3e/0x50
[<0000000049a377fc>] kvasprintf_const+0x10e/0x160
[<00000000627fc711>] kobject_set_name_vargs+0x5b/0x140
[<0000000019eeab06>] dev_set_name+0xc0/0xf0
[<0000000069cb12bc>] netdev_register_kobject+0xc8/0x320
[<00000000f2e83732>] register_netdevice+0xa1b/0xf00
[<000000009e1f57cc>] __tun_chr_ioctl+0x20d5/0x3dd0
[<000000009c560784>] tun_chr_ioctl+0x2f/0x40
[<000000000d759e02>] do_vfs_ioctl+0x1c7/0x1510
[<00000000351d7c31>] ksys_ioctl+0x99/0xb0
[<000000008390040a>] __x64_sys_ioctl+0x78/0xb0
[<0000000052d196b7>] do_syscall_64+0x16f/0x580
[<0000000019af9236>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[<00000000bc384531>] 0xffffffffffffffff
v3 -> v4:
Set reg_state to NETREG_UNREGISTERED if registering fails
v2 -> v3:
* Replaced BUG_ON with WARN_ON in free_netdev and netdev_release
v1 -> v2:
* Relying on driver calling free_netdev rather than calling
put_device directly in error path
Reported-by: syzbot+ad8ca40ecd77896d51e2@syzkaller.appspotmail.com
Cc: David Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Jouni Hogander <jouni.hogander@unikie.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After LRO/GRO is applied, SRv6 encapsulated packets have
SKB_GSO_IPXIP6 feature flag, and this flag must be removed right after
decapulation procedure.
Currently, SKB_GSO_IPXIP6 flag is not removed on End.D* actions, which
creates inconsistent packet state, that is, a normal TCP/IP packets
have the SKB_GSO_IPXIP6 flag. This behavior can cause unexpected
fallback to GSO on routing to netdevices that do not support
SKB_GSO_IPXIP6. For example, on inter-VRF forwarding, decapsulated
packets separated into small packets by GSO because VRF devices do not
support TSO for packets with SKB_GSO_IPXIP6 flag, and this degrades
forwarding performance.
This patch removes encapsulation related GSO flags from the skb right
after the End.D* action is applied.
Fixes: d7a669dd2f ("ipv6: sr: add helper functions for seg6local")
Signed-off-by: Yuki Taguchi <tagyounit@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steffen Klassert says:
====================
pull request (net): ipsec 2020-01-21
1) Fix packet tx through bpf_redirect() for xfrm and vti
interfaces. From Nicolas Dichtel.
2) Do not confirm neighbor when do pmtu update on a virtual
xfrm interface. From Xu Wang.
3) Support output_mark for offload ESP packets, this was
forgotten when the output_mark was added initially.
From Ulrich Weber.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
A compliation error happen when building branch 5.5-rc7
In file included from net/hsr/hsr_main.c:12:0:
net/hsr/hsr_main.h:194:20: error: two or more data types in declaration specifiers
static inline void void hsr_debugfs_rename(struct net_device *dev)
So Removed one void.
Fixes: 4c2d5e33dc ("hsr: rename debugfs file when interface name is changed")
Signed-off-by: xiaofeng.yan <yanxiaofeng7@jd.com>
Acked-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Support for moving IPv4 GRE tunnels between namespaces was added in
commit b57708add3 ("gre: add x-netns support"). The respective change
for IPv6 tunnels, commit 22f08069e8 ("ip6gre: add x-netns support")
did not drop NETIF_F_NETNS_LOCAL flag so moving them from one netns to
another is still denied in IPv6 case. Drop NETIF_F_NETNS_LOCAL flag from
ip6gre tunnels to allow moving ip6gre tunnel endpoints between network
namespaces.
Signed-off-by: Niko Kortstrom <niko.kortstrom@nokia.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Three fixes for RISC-V:
- Don't free and reuse memory containing the code that CPUs parked at
boot reside in.
- Fix rv64 build problems for ubsan and some modules by adding logical
and arithmetic shift helpers for 128-bit values. These are from
libgcc and are similar to what's present for ARM64.
- Fix vDSO builds to clean up their own temporary files.
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Merge tag 'riscv/for-v5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
"Three fixes for RISC-V:
- Don't free and reuse memory containing the code that CPUs parked at
boot reside in.
- Fix rv64 build problems for ubsan and some modules by adding
logical and arithmetic shift helpers for 128-bit values. These are
from libgcc and are similar to what's present for ARM64.
- Fix vDSO builds to clean up their own temporary files"
* tag 'riscv/for-v5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Less inefficient gcc tishift helpers (and export their symbols)
riscv: delete temporary files
riscv: make sure the cores stay looping in .Lsecondary_park
Pull networking fixes from David Miller:
1) Fix non-blocking connect() in x25, from Martin Schiller.
2) Fix spurious decryption errors in kTLS, from Jakub Kicinski.
3) Netfilter use-after-free in mtype_destroy(), from Cong Wang.
4) Limit size of TSO packets properly in lan78xx driver, from Eric
Dumazet.
5) r8152 probe needs an endpoint sanity check, from Johan Hovold.
6) Prevent looping in tcp_bpf_unhash() during sockmap/tls free, from
John Fastabend.
7) hns3 needs short frames padded on transmit, from Yunsheng Lin.
8) Fix netfilter ICMP header corruption, from Eyal Birger.
9) Fix soft lockup when low on memory in hns3, from Yonglong Liu.
10) Fix NTUPLE firmware command failures in bnxt_en, from Michael Chan.
11) Fix memory leak in act_ctinfo, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits)
cxgb4: reject overlapped queues in TC-MQPRIO offload
cxgb4: fix Tx multi channel port rate limit
net: sched: act_ctinfo: fix memory leak
bnxt_en: Do not treat DSN (Digital Serial Number) read failure as fatal.
bnxt_en: Fix ipv6 RFS filter matching logic.
bnxt_en: Fix NTUPLE firmware command failures.
net: systemport: Fixed queue mapping in internal ring map
net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec
net: dsa: sja1105: Don't error out on disabled ports with no phy-mode
net: phy: dp83867: Set FORCE_LINK_GOOD to default after reset
net: hns: fix soft lockup when there is not enough memory
net: avoid updating qdisc_xmit_lock_key in netdev_update_lockdep_key()
net/sched: act_ife: initalize ife->metalist earlier
netfilter: nat: fix ICMP header corruption on ICMP errors
net: wan: lapbether.c: Use built-in RCU list checking
netfilter: nf_tables: fix flowtable list del corruption
netfilter: nf_tables: fix memory leak in nf_tables_parse_netdev_hooks()
netfilter: nf_tables: remove WARN and add NLA_STRING upper limits
netfilter: nft_tunnel: ERSPAN_VERSION must not be null
netfilter: nft_tunnel: fix null-attribute check
...
A queue can't belong to multiple traffic classes. So, reject
any such configuration that results in overlapped queues for a
traffic class.
Fixes: b1396c2bd6 ("cxgb4: parse and configure TC-MQPRIO offload")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
T6 can support 2 egress traffic management channels per port to
double the total number of traffic classes that can be configured.
In this configuration, if the class belongs to the other channel,
then all the queues must be bound again explicitly to the new class,
for the rate limit parameters on the other channel to take effect.
So, always explicitly bind all queues to the port rate limit traffic
class, regardless of the traffic management channel that it belongs
to. Also, only bind queues to port rate limit traffic class, if all
the queues don't already belong to an existing different traffic
class.
Fixes: 4ec4762d8e ("cxgb4: add TC-MATCHALL classifier egress offload")
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The existing __lshrti3 was really inefficient, and the other two helpers
are also needed to compile some modules.
Add the missing versions, and export all of the symbols like arm64
already does.
This code is based on the assembly generated by libgcc builds.
This fixes a build break triggered by ubsan:
riscv64-unknown-linux-gnu-ld: lib/ubsan.o: in function `.L2':
ubsan.c:(.text.unlikely+0x38): undefined reference to `__ashlti3'
riscv64-unknown-linux-gnu-ld: ubsan.c:(.text.unlikely+0x42): undefined reference to `__ashrti3'
Signed-off-by: Olof Johansson <olof@lixom.net>
[paul.walmsley@sifive.com: use SYM_FUNC_{START,END} instead of
ENTRY/ENDPROC; note libgcc origin]
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
core mst:
- serialize down messages and clear timeslots are on unplug
amdgpu:
- Update golden settings for renoir
- eDP fix
i915:
- uAPI fix: Remove dash and colon from PMU names to comply with tools/perf
- Fix for include file that was indirectly included
- Two fixes to make sure VMA are marked active for error capture
virtio:
- maintain obj reservation lock when submitting cmds
rockchip:
- increase link rate var size to accommodate rates
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Merge tag 'drm-fixes-2020-01-19' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Back from LCA2020, fixes wasn't too busy last week, seems to have
quieten down appropriately, some amdgpu, i915, then a core mst fix and
one fix for virtio-gpu and one for rockchip:
core mst:
- serialize down messages and clear timeslots are on unplug
amdgpu:
- Update golden settings for renoir
- eDP fix
i915:
- uAPI fix: Remove dash and colon from PMU names to comply with
tools/perf
- Fix for include file that was indirectly included
- Two fixes to make sure VMA are marked active for error capture
virtio:
- maintain obj reservation lock when submitting cmds
rockchip:
- increase link rate var size to accommodate rates"
* tag 'drm-fixes-2020-01-19' of git://anongit.freedesktop.org/drm/drm:
drm/amd/display: Reorder detect_edp_sink_caps before link settings read.
drm/amdgpu: update goldensetting for renoir
drm/dp_mst: Have DP_Tx send one msg at a time
drm/dp_mst: clear time slots for ports invalid
drm/i915/pmu: Do not use colons or dashes in PMU names
drm/rockchip: fix integer type used for storing dp data rate
drm/i915/gt: Mark ring->vma as active while pinned
drm/i915/gt: Mark context->state vma as active while pinned
drm/i915/gt: Skip trying to unbind in restore_ggtt_mappings
drm/i915: Add missing include file <linux/math64.h>
drm/virtio: add missing virtio_gpu_array_lock_resv call
Temporary files used in the VDSO build process linger on even after make
mrproper: vdso-dummy.o.tmp, vdso.so.dbg.tmp.
Delete them once they're no longer needed.
Signed-off-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- a resctrl fix for uninitialized objects found by debugobjects
- a resctrl memory leak fix
- fix the unintended re-enabling of the of SME and SEV CPU flags if
memory encryption was disabled at bootup via the MSR space"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/CPU/AMD: Ensure clearing of SME/SEV features is maintained
x86/resctrl: Fix potential memory leak
x86/resctrl: Fix an imbalance in domain_remove_cpu()
Pull timer fixes from Ingo Molnar:
"Three fixes: fix link failure on Alpha, fix a Sparse warning and
annotate/robustify a lockless access in the NOHZ code"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick/sched: Annotate lockless access to last_jiffies_update
lib/vdso: Make __cvdso_clock_getres() static
time/posix-stubs: Provide compat itimer supoprt for alpha
Pull cpu/SMT fix from Ingo Molnar:
"Fix a build bug on CONFIG_HOTPLUG_SMT=y && !CONFIG_SYSFS kernels"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu/SMT: Fix x86 link error without CONFIG_SYSFS
Pull x86 RAS fix from Ingo Molnar:
"Fix a thermal throttling race that can result in easy to trigger boot
crashes on certain Ice Lake platforms"
* 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce/therm_throt: Do not access uninitialized therm_work
Pull perf fixes from Ingo Molnar:
"Tooling fixes, three Intel uncore driver fixes, plus an AUX events fix
uncovered by the perf fuzzer"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Remove PCIe3 unit for SNR
perf/x86/intel/uncore: Fix missing marker for snr_uncore_imc_freerunning_events
perf/x86/intel/uncore: Add PCI ID of IMC for Xeon E3 V5 Family
perf: Correctly handle failed perf_get_aux_event()
perf hists: Fix variable name's inconsistency in hists__for_each() macro
perf map: Set kmap->kmaps backpointer for main kernel map chunks
perf report: Fix incorrectly added dimensions as switch perf data file
tools lib traceevent: Fix memory leakage in filter_event
Pull locking fixes from Ingo Molnar:
"Three fixes:
- Fix an rwsem spin-on-owner crash, introduced in v5.4
- Fix a lockdep bug when running out of stack_trace entries,
introduced in v5.4
- Docbook fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Fix kernel crash when spinning on RWSEM_OWNER_UNKNOWN
futex: Fix kernel-doc notation warning
locking/lockdep: Fix buffer overrun problem in stack_trace[]
Pull irq fix from Ingo Molnar:
"Fix a recent regression in the Ingenic SoCs irqchip driver that floods
the syslog"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/ingenic: Get rid of the legacy IRQ domain
Pull EFI fixes from Ingo Molnar:
"Three EFI fixes:
- Fix a slow-boot-scrolling regression but making sure we use WC for
EFI earlycon framebuffer mappings on x86
- Fix a mixed EFI mode boot crash
- Disable paging explicitly before entering startup_32() in mixed
mode bootup"
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/efistub: Disable paging at mixed mode entry
efi/libstub/random: Initialize pointer variables to zero for mixed mode
efi/earlycon: Fix write-combine mapping on x86
Pull rseq fixes from Ingo Molnar:
"Two rseq bugfixes:
- CLONE_VM !CLONE_THREAD didn't work properly, the kernel would end
up corrupting the TLS of the parent. Technically a change in the
ABI but the previous behavior couldn't resonably have been relied
on by applications so this looks like a valid exception to the ABI
rule.
- Make the RSEQ_FLAG_UNREGISTER ABI behavior consistent with the
handling of other flags. This is not thought to impact any
applications either"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
rseq: Unregister rseq for clone CLONE_VM
rseq: Reject unknown flags on rseq unregister
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Merge tag 'for-linus-2020-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull thread fixes from Christian Brauner:
"Here is an urgent fix for ptrace_may_access() permission checking.
Commit 69f594a389 ("ptrace: do not audit capability check when
outputing /proc/pid/stat") introduced the ability to opt out of audit
messages for accesses to various proc files since they are not
violations of policy.
While doing so it switched the check from ns_capable() to
has_ns_capability{_noaudit}(). That means it switched from checking
the subjective credentials (ktask->cred) of the task to using the
objective credentials (ktask->real_cred). This is appears to be wrong.
ptrace_has_cap() is currently only used in ptrace_may_access() And is
used to check whether the calling task (subject) has the
CAP_SYS_PTRACE capability in the provided user namespace to operate on
the target task (object). According to the cred.h comments this means
the subjective credentials of the calling task need to be used.
With this fix we switch ptrace_has_cap() to use security_capable() and
thus back to using the subjective credentials.
As one example where this might be particularly problematic, Jann
pointed out that in combination with the upcoming IORING_OP_OPENAT{2}
feature, this bug might allow unprivileged users to bypass the
capability checks while asynchronously opening files like /proc/*/mem,
because the capability checks for this would be performed against
kernel credentials.
To illustrate on the former point about this being exploitable: When
io_uring creates a new context it records the subjective credentials
of the caller. Later on, when it starts to do work it creates a kernel
thread and registers a callback. The callback runs with kernel creds
for ktask->real_cred and ktask->cred.
To prevent this from becoming a full-blown 0-day io_uring will call
override_cred() and override ktask->cred with the subjective
credentials of the creator of the io_uring instance. With
ptrace_has_cap() currently looking at ktask->real_cred this override
will be ineffective and the caller will be able to open arbitray proc
files as mentioned above.
Luckily, this is currently not exploitable but would be so once
IORING_OP_OPENAT{2} land in v5.6. Let's fix it now.
To minimize potential regressions I successfully ran the criu
testsuite. criu makes heavy use of ptrace() and extensively hits
ptrace_may_access() codepaths and has a good change of detecting any
regressions.
Additionally, I succesfully ran the ptrace and seccomp kernel tests"
* tag 'for-linus-2020-01-18' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()
- Fix printing misleading Secure-IPL enabled message when it is not.
- Fix a race condition between host ap bus and guest ap bus doing
device reset in crypto code.
- Fix sanity check in CCA cipher key function (CCA AES cipher key
support), which fails otherwise.
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Merge tag 's390-5.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Fix printing misleading Secure-IPL enabled message when it is not.
- Fix a race condition between host ap bus and guest ap bus doing
device reset in crypto code.
- Fix sanity check in CCA cipher key function (CCA AES cipher key
support), which fails otherwise.
* tag 's390-5.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/setup: Fix secure ipl message
s390/zcrypt: move ap device reset from bus to driver code
s390/zcrypt: Fix CCA cipher key gen with clear key value function
Three fixes in drivers with no impact to core code. The mptfusion fix
is enormous because the driver API had to be rethreaded to pass down
the necessary iocp pointer, but once that's done a significant chunk
of code is deleted. The other two patches are small.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Three fixes in drivers with no impact to core code.
The mptfusion fix is enormous because the driver API had to be
rethreaded to pass down the necessary iocp pointer, but once that's
done a significant chunk of code is deleted.
The other two patches are small"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: mptfusion: Fix double fetch bug in ioctl
scsi: storvsc: Correctly set number of hardware queues for IDE disk
scsi: fnic: fix invalid stack access
Here are some small fixes for 5.5-rc7
Included here are:
- two lkdtm fixes
- coresight build fix
- Documentation update for the hw process document
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Here are some small fixes for 5.5-rc7
Included here are:
- two lkdtm fixes
- coresight build fix
- Documentation update for the hw process document
All of these have been in linux-next with no reported issues"
* tag 'char-misc-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Documentation/process: Add Amazon contact for embargoed hardware issues
lkdtm/bugs: fix build error in lkdtm_UNSET_SMEP
lkdtm/bugs: Make double-fault test always available
coresight: etm4x: Fix unused function warning
Here are some small staging and iio driver fixes for 5.5-rc7
All of them are for some small reported issues. Nothing major, full
details in the shortlog.
All have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO driver fixes from Greg KH:
"Here are some small staging and iio driver fixes for 5.5-rc7
All of them are for some small reported issues. Nothing major, full
details in the shortlog.
All have been in linux-next with no reported issues"
* tag 'staging-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: comedi: ni_routes: allow partial routing information
staging: comedi: ni_routes: fix null dereference in ni_find_route_source()
iio: light: vcnl4000: Fix scale for vcnl4040
iio: buffer: align the size of scan bytes to size of the largest element
iio: chemical: pms7003: fix unmet triggered buffer dependency
iio: imu: st_lsm6dsx: Fix selection of ST_LSM6DS3_ID
iio: adc: ad7124: Fix DT channel configuration
Here are some small USB driver and core fixes for 5.5-rc7
There's one fix for hub wakeup issues and a number of small usb-serial
driver fixes and device id updates.
The hub fix has been in linux-next for a while with no reported issues,
and the usb-serial ones have all passed 0-day with no problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB driver fixes from Greg KH:
"Here are some small USB driver and core fixes for 5.5-rc7
There's one fix for hub wakeup issues and a number of small usb-serial
driver fixes and device id updates.
The hub fix has been in linux-next for a while with no reported
issues, and the usb-serial ones have all passed 0-day with no
problems"
* tag 'usb-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: serial: quatech2: handle unbound ports
USB: serial: keyspan: handle unbound ports
USB: serial: io_edgeport: add missing active-port sanity check
USB: serial: io_edgeport: handle unbound ports on URB completion
USB: serial: ch341: handle unbound port at reset_resume
USB: serial: suppress driver bind attributes
USB: serial: option: add support for Quectel RM500Q in QDL mode
usb: core: hub: Improved device recognition on remote wakeup
USB: serial: opticon: fix control-message timeouts
USB: serial: option: Add support for Quectel RM500Q
USB: serial: simple: Add Motorola Solutions TETRA MTP3xxx and MTP85xx
Michael Chan says:
====================
bnxt_en: Bug fixes.
3 small bug fix patches. The 1st two are aRFS fixes and the last one
fixes a fatal driver load failure on some kernels without PCIe
extended config space support enabled.
Please also queue these for -stable. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
DSN read can fail, for example on a kdump kernel without PCIe extended
config space support. If DSN read fails, don't set the
BNXT_FLAG_DSN_VALID flag and continue loading. Check the flag
to see if the stored DSN is valid before using it. Only VF reps
creation should fail without valid DSN.
Fixes: 03213a9965 ("bnxt: move bp->switch_id initialization to PF probe")
Reported-by: Marc Smith <msmith626@gmail.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix bnxt_fltr_match() to match ipv6 source and destination addresses.
The function currently only checks ipv4 addresses and will not work
corrently on ipv6 filters.
Fixes: c0c050c58d ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The NTUPLE related firmware commands are sent to the wrong firmware
channel, causing all these commands to fail on new firmware that
supports the new firmware channel. Fix it by excluding the 3
NTUPLE firmware commands from the list for the new firmware channel.
Fixes: 760b6d3341 ("bnxt_en: Add support for 2nd firmware message channel.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 69f594a389 ("ptrace: do not audit capability check when outputing /proc/pid/stat")
introduced the ability to opt out of audit messages for accesses to various
proc files since they are not violations of policy. While doing so it
somehow switched the check from ns_capable() to
has_ns_capability{_noaudit}(). That means it switched from checking the
subjective credentials of the task to using the objective credentials. This
is wrong since. ptrace_has_cap() is currently only used in
ptrace_may_access() And is used to check whether the calling task (subject)
has the CAP_SYS_PTRACE capability in the provided user namespace to operate
on the target task (object). According to the cred.h comments this would
mean the subjective credentials of the calling task need to be used.
This switches ptrace_has_cap() to use security_capable(). Because we only
call ptrace_has_cap() in ptrace_may_access() and in there we already have a
stable reference to the calling task's creds under rcu_read_lock() there's
no need to go through another series of dereferences and rcu locking done
in ns_capable{_noaudit}().
As one example where this might be particularly problematic, Jann pointed
out that in combination with the upcoming IORING_OP_OPENAT feature, this
bug might allow unprivileged users to bypass the capability checks while
asynchronously opening files like /proc/*/mem, because the capability
checks for this would be performed against kernel credentials.
To illustrate on the former point about this being exploitable: When
io_uring creates a new context it records the subjective credentials of the
caller. Later on, when it starts to do work it creates a kernel thread and
registers a callback. The callback runs with kernel creds for
ktask->real_cred and ktask->cred. To prevent this from becoming a
full-blown 0-day io_uring will call override_cred() and override
ktask->cred with the subjective credentials of the creator of the io_uring
instance. With ptrace_has_cap() currently looking at ktask->real_cred this
override will be ineffective and the caller will be able to open arbitray
proc files as mentioned above.
Luckily, this is currently not exploitable but will turn into a 0-day once
IORING_OP_OPENAT{2} land in v5.6. Fix it now!
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Eric Paris <eparis@redhat.com>
Cc: stable@vger.kernel.org
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Reviewed-by: Jann Horn <jannh@google.com>
Fixes: 69f594a389 ("ptrace: do not audit capability check when outputing /proc/pid/stat")
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
rockchip: increase link rate var size to accommodate rates (Tobias)
mst: serialize down messages and clear timeslots are on unplug (Wayne)
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Tobias Schramm <t.schramm@manjaro.org>
Cc: Wayne Lin <Wayne.Lin@amd.com>
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Merge tag 'drm-misc-fixes-2020-01-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
virtio: maintain obj reservation lock when submitting cmds (Gerd)
rockchip: increase link rate var size to accommodate rates (Tobias)
mst: serialize down messages and clear timeslots are on unplug (Wayne)
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Tobias Schramm <t.schramm@manjaro.org>
Cc: Wayne Lin <Wayne.Lin@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20200116162856.GA11524@art_vandelay
As we reset the GPMI block at resume, the timing parameters setup by a
previous exec_op is lost. Rewriting GPMI timing registers on first exec_op
after resume fixes the problem.
Fixes: ef347c0cfd ("mtd: rawnand: gpmi: Implement exec_op")
Cc: stable@vger.kernel.org
Signed-off-by: Esben Haabendal <esben@geanix.com>
Acked-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
The commit 7b678c69c0 ("mtd: spi-nor: Merge spansion Quad Enable
methods") forgot to actually set the QE bit in some cases. Thus this
breaks quad mode accesses to flashes which support readback of the
status register-2. Fix it.
Fixes: 7b678c69c0 ("mtd: spi-nor: Merge spansion Quad Enable methods")
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
mtd->size is still unassigned when running spansion_post_sfdp_fixups()
hook, therefore use nor->params.size to determine the size of flash device.
This makes sure that 4-byte addressing opcodes are used on Spansion
flashes that are larger than 16MiB and don't have SFDP 4BAIT table
populated.
Fixes: 92094ebc38 ("mtd: spi-nor: Add spansion_post_sfdp_fixups()")
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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Merge tag 'io_uring-5.5-2020-01-16' of git://git.kernel.dk/linux-block
Pull io_uring fixes form Jens Axboe:
- Ensure ->result is always set when IO is retried (Bijan)
- In conjunction with the above, fix a regression in polled IO issue
when retried (me/Bijan)
- Don't setup async context for read/write fixed, otherwise we may
wrongly map the iovec on retry (me)
- Cancel io-wq work if we fail getting mm reference (me)
- Ensure dependent work is always initialized correctly (me)
- Only allow original task to submit IO, don't allow it from a passed
ring fd (me)
* tag 'io_uring-5.5-2020-01-16' of git://git.kernel.dk/linux-block:
io_uring: only allow submit from owning task
io_uring: ensure workqueue offload grabs ring mutex for poll list
io_uring: clear req->result always before issuing a read/write request
io_uring: be consistent in assigning next work from handler
io-wq: cancel work if we fail getting a mm reference
io_uring: don't setup async context for read/write fixed
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Merge tag 'for-5.5-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"A few more fixes that have been in the works during last twp weeks.
All have a user visible effect and are stable material:
- scrub: properly update progress after calling cancel ioctl, calling
'resume' would start from the beginning otherwise
- fix subvolume reference removal, after moving out of the original
path the reference is not recognized and will lead to transaction
abort
- fix reloc root lifetime checks, could lead to crashes when there's
subvolume cleaning running in parallel
- fix memory leak when quotas get disabled in the middle of extent
accounting
- fix transaction abort in case of balance being started on degraded
mount on eg. RAID1"
* tag 'for-5.5-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: check rw_devices, not num_devices for balance
Btrfs: always copy scrub arguments back to user space
btrfs: relocation: fix reloc_root lifespan and access
btrfs: fix memory leak in qgroup accounting
btrfs: do not delete mismatched root refs
btrfs: fix invalid removal of root ref
btrfs: rework arguments of btrfs_unlink_subvol
Here are a few fixes for issues related to unbound port devices which
could lead to NULL-pointer dereferences. Notably the bind attributes for
usb-serial (port) drivers are removed as almost none of the drivers can
handle individual ports going away once they've been bound.
Included are also some new device ids.
All but the unbound-port fixes have been in linux-next with no reported
issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-5.5-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for 5.5-rc7
Here are a few fixes for issues related to unbound port devices which
could lead to NULL-pointer dereferences. Notably the bind attributes for
usb-serial (port) drivers are removed as almost none of the drivers can
handle individual ports going away once they've been bound.
Included are also some new device ids.
All but the unbound-port fixes have been in linux-next with no reported
issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
* tag 'usb-serial-5.5-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: quatech2: handle unbound ports
USB: serial: keyspan: handle unbound ports
USB: serial: io_edgeport: add missing active-port sanity check
USB: serial: io_edgeport: handle unbound ports on URB completion
USB: serial: ch341: handle unbound port at reset_resume
USB: serial: suppress driver bind attributes
USB: serial: option: add support for Quectel RM500Q in QDL mode
USB: serial: opticon: fix control-message timeouts
USB: serial: option: Add support for Quectel RM500Q
USB: serial: simple: Add Motorola Solutions TETRA MTP3xxx and MTP85xx
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Merge tag 'fuse-fixes-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fix from Miklos Szeredi:
"Fix a regression in the last release affecting the ftp module of the
gvfs filesystem"
* tag 'fuse-fixes-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: fix fuse_send_readpages() in the syncronous read case
