- 01 Jun, 2021 1 commit
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Krzysztof Kozlowski authored
It's possible to trigger NULL pointer dereference by local unprivileged user, when calling getsockname() after failed bind() (e.g. the bind fails because LLCP_SAP_MAX used as SAP): BUG: kernel NULL pointer dereference, address: 0000000000000000 CPU: 1 PID: 426 Comm: llcp_sock_getna Not tainted 5.13.0-rc2-next-20210521+ #9 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1 04/01/2014 Call Trace: llcp_sock_getname+0xb1/0xe0 __sys_getpeername+0x95/0xc0 ? lockdep_hardirqs_on_prepare+0xd5/0x180 ? syscall_enter_from_user_mode+0x1c/0x40 __x64_sys_getpeername+0x11/0x20 do_syscall_64+0x36/0x70 entry_SYSCALL_64_after_hwframe+0x44/0xae This can be reproduced with Syzkaller C repro (bind followed by getpeername): https://syzkaller.appspot.com/x/repro.c?x=14def446e00000 Cc: <stable@vger.kernel.org> Fixes: d646960f ("NFC: Initial LLCP support") Reported-by: syzbot+80fb126e7f7d8b1a5914@syzkaller.appspotmail.com Reported-by:
butt3rflyh4ck <butterflyhuangxx@gmail.com> Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Link: https://lore.kernel.org/r/20210531072138.5219-1-krzysztof.kozlowski@canonical.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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- 30 May, 2021 1 commit
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Sriranjani P authored
Fixed link does not need mdio bus and in that case mdio_bus_data will not be allocated. Before using mdio_bus_data we should check for NULL. This patch fix the kernel panic due to NULL pointer dereference of mdio_bus_data when it is not allocated. Without this patch we do see following kernel crash caused due to kernel NULL pointer dereference. Call trace: stmmac_dvr_probe+0x3c/0x10b0 dwc_eth_dwmac_probe+0x224/0x378 platform_probe+0x68/0xe0 really_probe+0x130/0x3d8 driver_probe_device+0x68/0xd0 device_driver_attach+0x74/0x80 __driver_attach+0x58/0xf8 bus_for_each_dev+0x7c/0xd8 driver_attach+0x24/0x30 bus_add_driver+0x148/0x1f0 driver_register+0x64/0x120 __platform_driver_register+0x28/0x38 dwc_eth_dwmac_driver_init+0x1c/0x28 do_one_initcall+0x78/0x158 kernel_init_freeable+0x1f0/0x244 kernel_init+0x14/0x118 ret_from_fork+0x10/0x30 Code: f9002bfb 9113e2d9 910e6273 aa0003f7 (f9405c78) ---[ end trace 32d9d41562ddc081 ]--- Fixes: e5e5b771 ("net: stmmac: make in-band AN mode parsing is supported for non-DT") Signed-off-by:
Sriranjani P <sriranjani.p@samsung.com> Signed-off-by:
Pankaj Dubey <pankaj.dubey@samsung.com> Link: https://lore.kernel.org/r/20210528071056.35252-1-sriranjani.p@samsung.comSigned-off-by:
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- 28 May, 2021 5 commits
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Jakub Kicinski authored
Mat Martineau says: ==================== mptcp: Fixes for 5.13 These patches address two issues in MPTCP. Patch 1 fixes a locking issue affecting MPTCP-level retransmissions. Patches 2-4 improve handling of out-of-order packet arrival early in a connection, so it falls back to TCP rather than forcing a reset. Includes a selftest. ==================== Link: https://lore.kernel.org/r/20210527233140.182728-1-mathew.j.martineau@linux.intel.comSigned-off-by:
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Paolo Abeni authored
The previous commit noted that we can have fallback scenario due to OoO (or packet drop). Update the self-tests accordingly Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by:
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Paolo Abeni authored
When some mapping related errors occurs we close the main MPC subflow with a RST. We should instead fallback gracefully to TCP, and do the reset only for MPJ subflows. Fixes: d22f4988 ("mptcp: process MP_CAPABLE data option") Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/192Reported-by:
Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by:
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Paolo Abeni authored
In subflow_syn_recv_sock() we currently skip options parsing for OoO packet, given that such packets may not carry the relevant MPC option. If the peer generates an MPC+data TSO packet and some of the early segments are lost or get reorder, we server will ignore the peer key, causing transient, unexpected fallback to TCP. The solution is always parsing the incoming MPTCP options, and do the fallback only for in-order packets. This actually cleans the existing code a bit. Fixes: d22f4988 ("mptcp: process MP_CAPABLE data option") Reported-by:
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Paolo Abeni authored
MPTCP sk_forward_memory handling is a bit special, as such field is protected by the msk socket spin_lock, instead of the plain socket lock. Currently we have a code path updating such field without handling the relevant lock: __mptcp_retrans() -> __mptcp_clean_una_wakeup() Several helpers in __mptcp_clean_una_wakeup() will update sk_forward_alloc, possibly causing such field corruption, as reported by Matthieu. Address the issue providing and using a new variant of blamed function which explicitly acquires the msk spin lock. Fixes: 64b9cea7 ("mptcp: fix spurious retransmissions") Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/172Reported-by:
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- 27 May, 2021 6 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfJakub Kicinski authored
Pablo Neira Ayuso says: ==================== Netfilter/IPVS fixes for net The following patchset contains Netfilter/IPVS fixes for net: 1) Fix incorrect sockopts unregistration from error path, from Florian Westphal. 2) A few patches to provide better error reporting when missing kernel netfilter options are missing in .config. 3) Fix dormant table flag updates. 4) Memleak in IPVS when adding service with IP_VS_SVC_F_HASHED flag. * git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf: ipvs: ignore IP_VS_SVC_F_HASHED flag when adding service netfilter: nf_tables: fix table flag updates netfilter: nf_tables: extended netlink error reporting for chain type netfilter: nf_tables: missing error reporting for not selected expressions netfilter: conntrack: unregister ipv4 sockopts on error unwind ==================== Link: https://lore.kernel.org/r/20210527190115.98503-1-pablo@netfilter.orgSigned-off-by:
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Ariel Levkovich authored
Fix current behavior of skipping template allocation in case the ct action is in zone 0. Skipping the allocation may cause the datapath ct code to ignore the entire ct action with all its attributes (commit, nat) in case the ct action in zone 0 was preceded by a ct clear action. The ct clear action sets the ct_state to untracked and resets the skb->_nfct pointer. Under these conditions and without an allocated ct template, the skb->_nfct pointer will remain NULL which will cause the tc ct action handler to exit without handling commit and nat actions, if such exist. For example, the following rule in OVS dp: recirc_id(0x2),ct_state(+new-est-rel-rpl+trk),ct_label(0/0x1), \ in_port(eth0),actions:ct_clear,ct(commit,nat(src=10.11.0.12)), \ recirc(0x37a) Will result in act_ct skipping the commit and nat actions in zone 0. The change removes the skipping of template allocation for zone 0 and treats it the same as any other zone. Fixes: b57dc7c1 ("net/sched: Introduce action ct") Signed-off-by:
Ariel Levkovich <lariel@nvidia.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Link: https://lore.kernel.org/r/20210526170110.54864-1-lariel@nvidia.comSigned-off-by:
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Paul Blakey authored
Currently established connections are not offloaded if the filter has a "ct commit" action. This behavior will not offload connections of the following scenario: $ tc_filter add dev $DEV ingress protocol ip prio 1 flower \ ct_state -trk \ action ct commit action goto chain 1 $ tc_filter add dev $DEV ingress protocol ip chain 1 prio 1 flower \ action mirred egress redirect dev $DEV2 $ tc_filter add dev $DEV2 ingress protocol ip prio 1 flower \ action ct commit action goto chain 1 $ tc_filter add dev $DEV2 ingress protocol ip prio 1 chain 1 flower \ ct_state +trk+est \ action mirred egress redirect dev $DEV Offload established connections, regardless of the commit flag. Fixes: 46475bb2 ("net/sched: act_ct: Software offload of established flows") Reviewed-by:
Oz Shlomo <ozsh@nvidia.com> Reviewed-by:
Jiri Pirko <jiri@nvidia.com> Acked-by:
Paul Blakey <paulb@nvidia.com> Link: https://lore.kernel.org/r/1622029449-27060-1-git-send-email-paulb@nvidia.comSigned-off-by:
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Parav Pandit authored
Physical port name, port number attributes do not belong to virtual port flavour. When VF or SF virtual ports are registered they incorrectly append "np0" string in the netdevice name of the VF/SF. Before this fix, VF netdevice name were ens2f0np0v0, ens2f0np0v1 for VF 0 and 1 respectively. After the fix, they are ens2f0v0, ens2f0v1. With this fix, reading /sys/class/net/ens2f0v0/phys_port_name returns -EOPNOTSUPP. Also devlink port show example for 2 VFs on one PF to ensure that any physical port attributes are not exposed. $ devlink port show pci/0000:06:00.0/65535: type eth netdev ens2f0np0 flavour physical port 0 splittable false pci/0000:06:00.3/196608: type eth netdev ens2f0v0 flavour virtual splittable false pci/0000:06:00.4/262144: type eth netdev ens2f0v1 flavour virtual splittable false This change introduces a netdevice name change on systemd/udev version 245 and higher which honors phys_port_name sysfs file for generation of netdevice name. This also aligns to phys_port_name usage which is limited to switchdev ports as described in [1]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/tree/Documentation/networking/switchdev.rst Fixes: acf1ee44 ("devlink: Introduce devlink port flavour virtual") Signed-off-by:
Parav Pandit <parav@nvidia.com> Reviewed-by:
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Julian Anastasov authored
syzbot reported memory leak [1] when adding service with HASHED flag. We should ignore this flag both from sockopt and netlink provided data, otherwise the service is not hashed and not visible while releasing resources. [1] BUG: memory leak unreferenced object 0xffff888115227800 (size 512): comm "syz-executor263", pid 8658, jiffies 4294951882 (age 12.560s) 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: [<ffffffff83977188>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff83977188>] kzalloc include/linux/slab.h:686 [inline] [<ffffffff83977188>] ip_vs_add_service+0x598/0x7c0 net/netfilter/ipvs/ip_vs_ctl.c:1343 [<ffffffff8397d770>] do_ip_vs_set_ctl+0x810/0xa40 net/netfilter/ipvs/ip_vs_ctl.c:2570 [<ffffffff838449a8>] nf_setsockopt+0x68/0xa0 net/netfilter/nf_sockopt.c:101 [<ffffffff839ae4e9>] ip_setsockopt+0x259/0x1ff0 net/ipv4/ip_sockglue.c:1435 [<ffffffff839fa03c>] raw_setsockopt+0x18c/0x1b0 net/ipv4/raw.c:857 [<ffffffff83691f20>] __sys_setsockopt+0x1b0/0x360 net/socket.c:2117 [<ffffffff836920f2>] __do_sys_setsockopt net/socket.c:2128 [inline] [<ffffffff836920f2>] __se_sys_setsockopt net/socket.c:2125 [inline] [<ffffffff836920f2>] __x64_sys_setsockopt+0x22/0x30 net/socket.c:2125 [<ffffffff84350efa>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae Reported-and-tested-by: syzbot+e562383183e4b1766930@syzkaller.appspotmail.com Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:Julian Anastasov <ja@ssi.bg> Reviewed-by:
Simon Horman <horms@verge.net.au> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from Jakub Kicinski: "Networking fixes for 5.13-rc4, including fixes from bpf, netfilter, can and wireless trees. Notably including fixes for the recently announced "FragAttacks" WiFi vulnerabilities. Rather large batch, touching some core parts of the stack, too, but nothing hair-raising. Current release - regressions: - tipc: make node link identity publish thread safe - dsa: felix: re-enable TAS guard band mode - stmmac: correct clocks enabled in stmmac_vlan_rx_kill_vid() - stmmac: fix system hang if change mac address after interface ifdown Current release - new code bugs: - mptcp: avoid OOB access in setsockopt() - bpf: Fix nested bpf_bprintf_prepare with more per-cpu buffers - ethtool: stats: fix a copy-paste error - init correct array size Previous releases - regressions: - sched: fix packet stuck problem for lockless qdisc - net: really orphan skbs tied to closing sk - mlx4: fix EEPROM dump support - bpf: fix alu32 const subreg bound tracking on bitwise operations - bpf: fix mask direction swap upon off reg sign change - bpf, offload: reorder offload callback 'prepare' in verifier - stmmac: Fix MAC WoL not working if PHY does not support WoL - packetmmap: fix only tx timestamp on request - tipc: skb_linearize the head skb when reassembling msgs Previous releases - always broken: - mac80211: address recent "FragAttacks" vulnerabilities - mac80211: do not accept/forward invalid EAPOL frames - mptcp: avoid potential error message floods - bpf, ringbuf: deny reserve of buffers larger than ringbuf to prevent out of buffer writes - bpf: forbid trampoline attach for functions with variable arguments - bpf: add deny list of functions to prevent inf recursion of tracing programs - tls splice: check SPLICE_F_NONBLOCK instead of MSG_DONTWAIT - can: isotp: prevent race between isotp_bind() and isotp_setsockopt() - netfilter: nft_set_pipapo_avx2: Add irq_fpu_usable() check, fallback to non-AVX2 version Misc: - bpf: add kconfig knob for disabling unpriv bpf by default" * tag 'net-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (172 commits) net: phy: Document phydev::dev_flags bits allocation mptcp: validate 'id' when stopping the ADD_ADDR retransmit timer mptcp: avoid error message on infinite mapping mptcp: drop unconditional pr_warn on bad opt mptcp: avoid OOB access in setsockopt() nfp: update maintainer and mailing list addresses net: mvpp2: add buffer header handling in RX bnx2x: Fix missing error code in bnx2x_iov_init_one() net: zero-initialize tc skb extension on allocation net: hns: Fix kernel-doc sctp: fix the proc_handler for sysctl encap_port sctp: add the missing setting for asoc encap_port bpf, selftests: Adjust few selftest result_unpriv outcomes bpf: No need to simulate speculative domain for immediates bpf: Fix mask direction swap upon off reg sign change bpf: Wrap aux data inside bpf_sanitize_info container bpf: Fix BPF_LSM kconfig symbol dependency selftests/bpf: Add test for l3 use of bpf_redirect_peer bpftool: Add sock_release help info for cgroup attach/prog load command net: dsa: microchip: enable phy errata workaround on 9567 ...
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- 26 May, 2021 2 commits
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Florian Fainelli authored
Document the phydev::dev_flags bit allocation to allow bits 15:0 to define PHY driver specific behavior, bits 23:16 to be reserved for now, and bits 31:24 to hold generic PHY driver flags. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Reviewed-by:
Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/20210526184617.3105012-1-f.fainelli@gmail.comSigned-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linuxLinus Torvalds authored
Pull MTD fixes from Miquel Raynal: "MTD parsers: - Fix ofpart subpartitions parsing Raw NAND: - Fix external use of SW Hamming ECC helper (txx9ndfmc, tmio, sharpsl, ndfc, lpc32xx_slc, fsmc, cs553x)" * tag 'mtd/fixes-for-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: mtd: parsers: ofpart: fix parsing subpartitions mtd: rawnand: txx9ndfmc: Fix external use of SW Hamming ECC helper mtd: rawnand: tmio: Fix external use of SW Hamming ECC helper mtd: rawnand: sharpsl: Fix external use of SW Hamming ECC helper mtd: rawnand: ndfc: Fix external use of SW Hamming ECC helper mtd: rawnand: lpc32xx_slc: Fix external use of SW Hamming ECC helper mtd: rawnand: fsmc: Fix external use of SW Hamming ECC helper mtd: rawnand: cs553x: Fix external use of SW Hamming ECC helper
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- 25 May, 2021 25 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller authored
Daniel Borkmann says: ==================== pull-request: bpf 2021-05-26 The following pull-request contains BPF updates for your *net* tree. We've added 14 non-merge commits during the last 14 day(s) which contain a total of 17 files changed, 513 insertions(+), 231 deletions(-). The main changes are: 1) Fix bpf_skb_change_head() helper to reset mac_len, from Jussi Maki. 2) Fix masking direction swap upon off-reg sign change, from Daniel Borkmann. 3) Fix BPF offloads in verifier by reordering driver callback, from Yinjun Zhang. 4) BPF selftest for ringbuf mmap ro/rw restrictions, from Andrii Nakryiko. 5) Follow-up fixes to nested bprintf per-cpu buffers, from Florent Revest. 6) Fix bpftool sock_release attach point help info, from Liu Jian. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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David S. Miller authored
Mat Martineau says: ==================== MPTCP fixes Here are a few fixes for the -net tree. Patch 1 fixes an attempt to access a tcp-specific field that does not exist in mptcp sockets. Patches 2 and 3 remove warning/error log output that could be flooded. Patch 4 performs more validation on address advertisement echo packets to improve RFC 8684 compliance. ==================== Signed-off-by: -
Davide Caratti authored
when Linux receives an echo-ed ADD_ADDR, it checks the IP address against the list of "announced" addresses. In case of a positive match, the timer that handles retransmissions is stopped regardless of the 'Address Id' in the received packet: this behaviour does not comply with RFC8684 3.4.1. Fix it by validating the 'Address Id' in received echo-ed ADD_ADDRs. Tested using packetdrill, with the following captured output: unpatched kernel: Out <...> Flags [.], ack 1, win 256, options [mptcp add-addr v1 id 1 198.51.100.2 hmac 0xfd2e62517888fe29,mptcp dss ack 3007449509], length 0 In <...> Flags [.], ack 1, win 257, options [mptcp add-addr v1-echo id 1 1.2.3.4,mptcp dss ack 3013740213], length 0 Out <...> Flags [.], ack 1, win 256, options [mptcp add-addr v1 id 1 198.51.100.2 hmac 0xfd2e62517888fe29,mptcp dss ack 3007449509], length 0 In <...> Flags [.], ack 1, win 257, options [mptcp add-addr v1-echo id 90 198.51.100.2,mptcp dss ack 3013740213], length 0 ^^^ retransmission is stopped here, but 'Address Id' is 90 patched kernel: Out <...> Flags [.], ack 1, win 256, options [mptcp add-addr v1 id 1 198.51.100.2 hmac 0x1cf372d59e05f4b8,mptcp dss ack 3007449509], length 0 In <...> Flags [.], ack 1, win 257, options [mptcp add-addr v1-echo id 1 1.2.3.4,mptcp dss ack 1672384568], length 0 Out <...> Flags [.], ack 1, win 256, options [mptcp add-addr v1 id 1 198.51.100.2 hmac 0x1cf372d59e05f4b8,mptcp dss ack 3007449509], length 0 In <...> Flags [.], ack 1, win 257, options [mptcp add-addr v1-echo id 90 198.51.100.2,mptcp dss ack 1672384568], length 0 Out <...> Flags [.], ack 1, win 256, options [mptcp add-addr v1 id 1 198.51.100.2 hmac 0x1cf372d59e05f4b8,mptcp dss ack 3007449509], length 0 In <...> Flags [.], ack 1, win 257, options [mptcp add-addr v1-echo id 1 198.51.100.2,mptcp dss ack 1672384568], length 0 ^^^ retransmission is stopped here, only when both 'Address Id' and 'IP Address' match Fixes: 00cfd77b ("mptcp: retransmit ADD_ADDR when timeout") Signed-off-by:Davide Caratti <dcaratti@redhat.com> Signed-off-by:
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Paolo Abeni authored
Another left-over. Avoid flooding dmesg with useless text, we already have a MIB for that event. Fixes: 648ef4b8 ("mptcp: Implement MPTCP receive path") Signed-off-by:
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Paolo Abeni authored
This is a left-over of early day. A malicious peer can flood the kernel logs with useless messages, just drop it. Fixes: f296234c ("mptcp: Add handling of incoming MP_JOIN requests") Signed-off-by:
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Paolo Abeni authored
We can't use tcp_set_congestion_control() on an mptcp socket, as such function can end-up accessing a tcp-specific field - prior_ssthresh - causing an OOB access. To allow propagating the correct ca algo on subflow, cache the ca name at initialization time. Additionally avoid overriding the user-selected CA (if any) at clone time. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/182 Fixes: aa1fbd94 ("mptcp: sockopt: add TCP_CONGESTION and TCP_INFO") Acked-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Simon Horman authored
Some of Netronome's activities and people have moved over to Corigine, including NFP driver maintenance and myself. Signed-off-by:
Simon Horman <simon.horman@corigine.com> Signed-off-by:
Louis Peens <louis.peens@corigine.com> Signed-off-by:
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Stefan Chulski authored
If Link Partner sends frames larger than RX buffer size, MAC mark it as oversize but still would pass it to the Packet Processor. In this scenario, Packet Processor scatter frame between multiple buffers, but only a single buffer would be returned to the Buffer Manager pool and it would not refill the poll. Patch add handling of oversize error with buffer header handling, so all buffers would be returned to the Buffer Manager pool. Fixes: 3f518509 ("ethernet: Add new driver for Marvell Armada 375 network unit") Reported-by:
Stefan Chulski <stefanc@marvell.com> Signed-off-by:
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Jiapeng Chong authored
Eliminate the follow smatch warning: drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c:1227 bnx2x_iov_init_one() warn: missing error code 'err'. Reported-by:
Abaci Robot <abaci@linux.alibaba.com> Signed-off-by:
Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by:
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Vlad Buslov authored
Function skb_ext_add() doesn't initialize created skb extension with any value and leaves it up to the user. However, since extension of type TC_SKB_EXT originally contained only single value tc_skb_ext->chain its users used to just assign the chain value without setting whole extension memory to zero first. This assumption changed when TC_SKB_EXT extension was extended with additional fields but not all users were updated to initialize the new fields which leads to use of uninitialized memory afterwards. UBSAN log: [ 778.299821] UBSAN: invalid-load in net/openvswitch/flow.c:899:28 [ 778.301495] load of value 107 is not a valid value for type '_Bool' [ 778.303215] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.12.0-rc7+ #2 [ 778.304933] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 778.307901] Call Trace: [ 778.308680] <IRQ> [ 778.309358] dump_stack+0xbb/0x107 [ 778.310307] ubsan_epilogue+0x5/0x40 [ 778.311167] __ubsan_handle_load_invalid_value.cold+0x43/0x48 [ 778.312454] ? memset+0x20/0x40 [ 778.313230] ovs_flow_key_extract.cold+0xf/0x14 [openvswitch] [ 778.314532] ovs_vport_receive+0x19e/0x2e0 [openvswitch] [ 778.315749] ? ovs_vport_find_upcall_portid+0x330/0x330 [openvswitch] [ 778.317188] ? create_prof_cpu_mask+0x20/0x20 [ 778.318220] ? arch_stack_walk+0x82/0xf0 [ 778.319153] ? secondary_startup_64_no_verify+0xb0/0xbb [ 778.320399] ? stack_trace_save+0x91/0xc0 [ 778.321362] ? stack_trace_consume_entry+0x160/0x160 [ 778.322517] ? lock_release+0x52e/0x760 [ 778.323444] netdev_frame_hook+0x323/0x610 [openvswitch] [ 778.324668] ? ovs_netdev_get_vport+0xe0/0xe0 [openvswitch] [ 778.325950] __netif_receive_skb_core+0x771/0x2db0 [ 778.327067] ? lock_downgrade+0x6e0/0x6f0 [ 778.328021] ? lock_acquire+0x565/0x720 [ 778.328940] ? generic_xdp_tx+0x4f0/0x4f0 [ 778.329902] ? inet_gro_receive+0x2a7/0x10a0 [ 778.330914] ? lock_downgrade+0x6f0/0x6f0 [ 778.331867] ? udp4_gro_receive+0x4c4/0x13e0 [ 778.332876] ? lock_release+0x52e/0x760 [ 778.333808] ? dev_gro_receive+0xcc8/0x2380 [ 778.334810] ? lock_downgrade+0x6f0/0x6f0 [ 778.335769] __netif_receive_skb_list_core+0x295/0x820 [ 778.336955] ? process_backlog+0x780/0x780 [ 778.337941] ? mlx5e_rep_tc_netdevice_event_unregister+0x20/0x20 [mlx5_core] [ 778.339613] ? seqcount_lockdep_reader_access.constprop.0+0xa7/0xc0 [ 778.341033] ? kvm_clock_get_cycles+0x14/0x20 [ 778.342072] netif_receive_skb_list_internal+0x5f5/0xcb0 [ 778.343288] ? __kasan_kmalloc+0x7a/0x90 [ 778.344234] ? mlx5e_handle_rx_cqe_mpwrq+0x9e0/0x9e0 [mlx5_core] [ 778.345676] ? mlx5e_xmit_xdp_frame_mpwqe+0x14d0/0x14d0 [mlx5_core] [ 778.347140] ? __netif_receive_skb_list_core+0x820/0x820 [ 778.348351] ? mlx5e_post_rx_mpwqes+0xa6/0x25d0 [mlx5_core] [ 778.349688] ? napi_gro_flush+0x26c/0x3c0 [ 778.350641] napi_complete_done+0x188/0x6b0 [ 778.351627] mlx5e_napi_poll+0x373/0x1b80 [mlx5_core] [ 778.352853] __napi_poll+0x9f/0x510 [ 778.353704] ? mlx5_flow_namespace_set_mode+0x260/0x260 [mlx5_core] [ 778.355158] net_rx_action+0x34c/0xa40 [ 778.356060] ? napi_threaded_poll+0x3d0/0x3d0 [ 778.357083] ? sched_clock_cpu+0x18/0x190 [ 778.358041] ? __common_interrupt+0x8e/0x1a0 [ 778.359045] __do_softirq+0x1ce/0x984 [ 778.359938] __irq_exit_rcu+0x137/0x1d0 [ 778.360865] irq_exit_rcu+0xa/0x20 [ 778.361708] common_interrupt+0x80/0xa0 [ 778.362640] </IRQ> [ 778.363212] asm_common_interrupt+0x1e/0x40 [ 778.364204] RIP: 0010:native_safe_halt+0xe/0x10 [ 778.365273] Code: 4f ff ff ff 4c 89 e7 e8 50 3f 40 fe e9 dc fe ff ff 48 89 df e8 43 3f 40 fe eb 90 cc e9 07 00 00 00 0f 00 2d 74 05 62 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d 64 05 62 00 f4 c3 cc cc 0f 1f 44 00 [ 778.369355] RSP: 0018:ffffffff84407e48 EFLAGS: 00000246 [ 778.370570] RAX: ffff88842de46a80 RBX: ffffffff84425840 RCX: ffffffff83418468 [ 778.372143] RDX: 000000000026f1da RSI: 0000000000000004 RDI: ffffffff8343af5e [ 778.373722] RBP: fffffbfff0884b08 R08: 0000000000000000 R09: ffff88842de46bcb [ 778.375292] R10: ffffed1085bc8d79 R11: 0000000000000001 R12: 0000000000000000 [ 778.376860] R13: ffffffff851124a0 R14: 0000000000000000 R15: dffffc0000000000 [ 778.378491] ? rcu_eqs_enter.constprop.0+0xb8/0xe0 [ 778.379606] ? default_idle_call+0x5e/0xe0 [ 778.380578] default_idle+0xa/0x10 [ 778.381406] default_idle_call+0x96/0xe0 [ 778.382350] do_idle+0x3d4/0x550 [ 778.383153] ? arch_cpu_idle_exit+0x40/0x40 [ 778.384143] cpu_startup_entry+0x19/0x20 [ 778.385078] start_kernel+0x3c7/0x3e5 [ 778.385978] secondary_startup_64_no_verify+0xb0/0xbb Fix the issue by providing new function tc_skb_ext_alloc() that allocates tc skb extension and initializes its memory to 0 before returning it to the caller. Change all existing users to use new API instead of calling skb_ext_add() directly. Fixes: 038ebb1a ("net/sched: act_ct: fix miss set mru for ovs after defrag in act_ct") Fixes: d29334c1 ("net/sched: act_api: fix miss set post_ct for ovs after do conntrack in act_ct") Signed-off-by:
Vlad Buslov <vladbu@nvidia.com> Acked-by:
Cong Wang <cong.wang@bytedance.com> Signed-off-by:
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Yang Li authored
Fix function name in hns_ethtool.c kernel-doc comment to remove these warnings found by clang_w1. drivers/net/ethernet/hisilicon/hns/hns_ethtool.c:202: warning: expecting prototype for hns_nic_set_link_settings(). Prototype was for hns_nic_set_link_ksettings() instead. drivers/net/ethernet/hisilicon/hns/hns_ethtool.c:837: warning: expecting prototype for get_ethtool_stats(). Prototype was for hns_get_ethtool_stats() instead. drivers/net/ethernet/hisilicon/hns/hns_ethtool.c:894: warning: expecting prototype for get_strings(). Prototype was for hns_get_strings() instead. Reported-by:
Yang Li <yang.lee@linux.alibaba.com> Signed-off-by:
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Xin Long authored
proc_dointvec() cannot do min and max check for setting a value when extra1/extra2 is set, so change it to proc_dointvec_minmax() for sysctl encap_port. Fixes: e8a3001c ("sctp: add encap_port for netns sock asoc and transport") Signed-off-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
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Xin Long authored
This patch is to add the missing setting back for asoc encap_port. Fixes: 8dba2960 ("sctp: add SCTP_REMOTE_UDP_ENCAPS_PORT sockopt") Signed-off-by:
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Kees Cook authored
Fix another "confused deputy" weakness[1]. Writes to /proc/$pid/attr/ files need to check the opener credentials, since these fds do not transition state across execve(). Without this, it is possible to trick another process (which may have different credentials) to write to its own /proc/$pid/attr/ files, leading to unexpected and possibly exploitable behaviors. [1] https://www.kernel.org/doc/html/latest/security/credentials.html?highlight=confused#open-file-credentials Fixes: 1da177e4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Signed-off-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Daniel Borkmann authored
Given we don't need to simulate the speculative domain for registers with immediates anymore since the verifier uses direct imm-based rewrites instead of having to mask, we can also lift a few cases that were previously rejected. Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Acked-by:
Alexei Starovoitov <ast@kernel.org>
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Daniel Borkmann authored
In 801c6058 ("bpf: Fix leakage of uninitialized bpf stack under speculation") we replaced masking logic with direct loads of immediates if the register is a known constant. Given in this case we do not apply any masking, there is also no reason for the operation to be truncated under the speculative domain. Therefore, there is also zero reason for the verifier to branch-off and simulate this case, it only needs to do it for unknown but bounded scalars. As a side-effect, this also enables few test cases that were previously rejected due to simulation under zero truncation. Signed-off-by:
Piotr Krysiuk <piotras@gmail.com> Acked-by:
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Daniel Borkmann authored
Masking direction as indicated via mask_to_left is considered to be calculated once and then used to derive pointer limits. Thus, this needs to be placed into bpf_sanitize_info instead so we can pass it to sanitize_ptr_alu() call after the pointer move. Piotr noticed a corner case where the off reg causes masking direction change which then results in an incorrect final aux->alu_limit. Fixes: 7fedb63a ("bpf: Tighten speculative pointer arithmetic mask") Reported-by:
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Daniel Borkmann authored
Add a container structure struct bpf_sanitize_info which holds the current aux info, and update call-sites to sanitize_ptr_alu() to pass it in. This is needed for passing in additional state later on. Signed-off-by:
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Daniel Borkmann authored
Similarly as 6bdacdb4 ("bpf: Fix BPF_JIT kconfig symbol dependency") we need to detangle the hard BPF_LSM dependency on NET. This was previously implicit by its dependency on BPF_JIT which itself was dependent on NET (but without any actual/real hard dependency code-wise). Given the latter was lifted, so should be the former as BPF_LSMs could well exist on net-less systems. This therefore also fixes a randconfig build error recently reported by Randy: ld: kernel/bpf/bpf_lsm.o: in function `bpf_lsm_func_proto': bpf_lsm.c:(.text+0x1a0): undefined reference to `bpf_sk_storage_get_proto' ld: bpf_lsm.c:(.text+0x1b8): undefined reference to `bpf_sk_storage_delete_proto' [...] Fixes: b24abcff ("bpf, kconfig: Add consolidated menu entry for bpf with core options") Reported-by:
Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
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Linus Torvalds authored
Merge tag 'netfs-lib-fixes-20200525' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull netfs fixes from David Howells: "A couple of fixes to the new netfs lib: - Pass the AOP flags through from netfs_write_begin() into grab_cache_page_write_begin(). - Automatically enable in Kconfig netfs lib rather than presenting an option for manual enablement" * tag 'netfs-lib-fixes-20200525' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: netfs: Make CONFIG_NETFS_SUPPORT auto-selected rather than manual netfs: Pass flags through to grab_cache_page_write_begin()
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Gustavo A. R. Silva authored
In preparation to enable -Wimplicit-fallthrough for Clang, fix multiple warnings by explicitly adding multiple fallthrough pseudo-keywords in places where the code is intended to fall through to the next case. Link: https://github.com/KSPP/linux/issues/115Signed-off-by:
Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by:
David Howells <dhowells@redhat.com> Reviewed-by:
Jeffrey Altman <jaltman@auristor.com> cc: linux-afs@lists.infradead.org cc: linux-hardening@vger.kernel.org Link: https://lore.kernel.org/r/51150b54e0b0431a2c401cd54f2c4e7f50e94601.1605896059.git.gustavoars@kernel.org/ # v1 Link: https://lore.kernel.org/r/20210420211615.GA51432@embeddedor/ # v2 Signed-off-by:
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Jussi Maki authored
Add a test case for using bpf_skb_change_head() in combination with bpf_redirect_peer() to redirect a packet from a L3 device to veth and back. The test uses a BPF program that adds L2 headers to the packet coming from a L3 device and then calls bpf_redirect_peer() to redirect the packet to a veth device. The test fails as skb->mac_len is not set properly and thus the ethernet headers are not properly skb_pull'd in cls_bpf_classify(), causing tcp_v4_rcv() to point the TCP header into middle of the IP header. Signed-off-by:
Jussi Maki <joamaki@gmail.com> Signed-off-by:
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Liu Jian authored
The help information was not added at the time when the function got added. Fix this and add the missing information to its cli, documentation and bash completion. Fixes: db94cc0b ("bpftool: Add support for BPF_CGROUP_INET_SOCK_RELEASE") Signed-off-by:
Liu Jian <liujian56@huawei.com> Signed-off-by:
Quentin Monnet <quentin@isovalent.com> Link: https://lore.kernel.org/bpf/20210525014139.323859-1-liujian56@huawei.com
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David Howells authored
Make the netfs helper library selected automatically by the things that use it rather than being manually configured, even though it's required[1]. Fixes: 3a5829fe ("netfs: Make a netfs helper module") Reported-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
Jeff Layton <jlayton@kernel.org> cc: linux-mm@kvack.org cc: linux-cachefs@redhat.com cc: linux-afs@lists.infradead.org cc: linux-nfs@vger.kernel.org cc: linux-cifs@vger.kernel.org cc: ceph-devel@vger.kernel.org cc: v9fs-developer@lists.sourceforge.net cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/CAMuHMdXJZ7iNQE964CdBOU=vRKVMFzo=YF_eiwsGgqzuvZ+TuA@mail.gmail.com [1] Link: https://lore.kernel.org/r/162090298141.3166007.2971118149366779916.stgit@warthog.procyon.org.uk # v1
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David Howells authored
In netfs_write_begin(), pass the AOP flags through to grab_cache_page_write_begin() so that a request to use GFP_NOFS is honoured. Fixes: e1b1240c ("netfs: Add write_begin helper") Reported-by:
Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by:
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