- 18 Dec, 2021 9 commits
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George Kennedy authored
Avoid double free in tun_free_netdev() by moving the dev->tstats and tun->security allocs to a new ndo_init routine (tun_net_init()) that will be called by register_netdevice(). ndo_init is paired with the desctructor (tun_free_netdev()), so if there's an error in register_netdevice() the destructor will handle the frees. BUG: KASAN: double-free or invalid-free in selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605 CPU: 0 PID: 25750 Comm: syz-executor416 Not tainted 5.16.0-rc2-syzk #1 Hardware name: Red Hat KVM, BIOS Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106 print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:247 kasan_report_invalid_free+0x55/0x80 mm/kasan/report.c:372 ____kasan_slab_free mm/kasan/common.c:346 [inline] __kasan_slab_free+0x107/0x120 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook mm/slub.c:1749 [inline] slab_free mm/slub.c:3513 [inline] kfree+0xac/0x2d0 mm/slub.c:4561 selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605 security_tun_dev_free_security+0x4f/0x90 security/security.c:2342 tun_free_netdev+0xe6/0x150 drivers/net/tun.c:2215 netdev_run_todo+0x4df/0x840 net/core/dev.c:10627 rtnl_unlock+0x13/0x20 net/core/rtnetlink.c:112 __tun_chr_ioctl+0x80c/0x2870 drivers/net/tun.c:3302 tun_chr_ioctl+0x2f/0x40 drivers/net/tun.c:3311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported-by:
syzkaller <syzkaller@googlegroups.com> Signed-off-by:
George Kennedy <george.kennedy@oracle.com> Suggested-by:
Jakub Kicinski <kuba@kernel.org> Link: https://lore.kernel.org/r/1639679132-19884-1-git-send-email-george.kennedy@oracle.comSigned-off-by:
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Yevhen Orlov authored
In line: upper = info->upper_dev; We access upper_dev field, which is related only for particular events (e.g. event == NETDEV_CHANGEUPPER). So, this line cause invalid memory access for another events, when ptr is not netdev_notifier_changeupper_info. The KASAN logs are as follows: [ 30.123165] BUG: KASAN: stack-out-of-bounds in prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera] [ 30.133336] Read of size 8 at addr ffff80000cf772b0 by task udevd/778 [ 30.139866] [ 30.141398] CPU: 0 PID: 778 Comm: udevd Not tainted 5.16.0-rc3 #6 [ 30.147588] Hardware name: DNI AmazonGo1 A7040 board (DT) [ 30.153056] Call trace: [ 30.155547] dump_backtrace+0x0/0x2c0 [ 30.159320] show_stack+0x18/0x30 [ 30.162729] dump_stack_lvl+0x68/0x84 [ 30.166491] print_address_description.constprop.0+0x74/0x2b8 [ 30.172346] kasan_report+0x1e8/0x250 [ 30.176102] __asan_load8+0x98/0xe0 [ 30.179682] prestera_netdev_port_event.constprop.0+0x68/0x538 [prestera] [ 30.186847] prestera_netdev_event_handler+0x1b4/0x1c0 [prestera] [ 30.193313] raw_notifier_call_chain+0x74/0xa0 [ 30.197860] call_netdevice_notifiers_info+0x68/0xc0 [ 30.202924] register_netdevice+0x3cc/0x760 [ 30.207190] register_netdev+0x24/0x50 [ 30.211015] prestera_device_register+0x8a0/0xba0 [prestera] Fixes: 3d5048cc ("net: marvell: prestera: move netdev topology validation to prestera_main") Signed-off-by:
Yevhen Orlov <yevhen.orlov@plvision.eu> Link: https://lore.kernel.org/r/20211216171714.11341-1-yevhen.orlov@plvision.euSigned-off-by:
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Yevhen Orlov authored
In case, when some ports is in list and we don't find requested - we return last iterator state and not return NULL as expected. Fixes: 501ef306 ("net: marvell: prestera: Add driver for Prestera family ASIC devices") Signed-off-by:
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Hoang Le authored
This reverts commit 86c3a3e9. The tipc_aead_init() function can be calling from an interrupt routine. This allocation might sleep with GFP_KERNEL flag, hence the following BUG is reported. [ 17.657509] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:230 [ 17.660916] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/3 [ 17.664093] preempt_count: 302, expected: 0 [ 17.665619] RCU nest depth: 2, expected: 0 [ 17.667163] Preemption disabled at: [ 17.667165] [<0000000000000000>] 0x0 [ 17.669753] CPU: 3 PID: 0 Comm: swapper/3 Kdump: loaded Tainted: G W 5.16.0-rc4+ #1 [ 17.673006] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 17.675540] Call Trace: [ 17.676285] <IRQ> [ 17.676913] dump_stack_lvl+0x34/0x44 [ 17.678033] __might_resched.cold+0xd6/0x10f [ 17.679311] kmem_cache_alloc_trace+0x14d/0x220 [ 17.680663] tipc_crypto_start+0x4a/0x2b0 [tipc] [ 17.682146] ? kmem_cache_alloc_trace+0xd3/0x220 [ 17.683545] tipc_node_create+0x2f0/0x790 [tipc] [ 17.684956] tipc_node_check_dest+0x72/0x680 [tipc] [ 17.686706] ? ___cache_free+0x31/0x350 [ 17.688008] ? skb_release_data+0x128/0x140 [ 17.689431] tipc_disc_rcv+0x479/0x510 [tipc] [ 17.690904] tipc_rcv+0x71c/0x730 [tipc] [ 17.692219] ? __netif_receive_skb_core+0xb7/0xf60 [ 17.693856] tipc_l2_rcv_msg+0x5e/0x90 [tipc] [ 17.695333] __netif_receive_skb_list_core+0x20b/0x260 [ 17.697072] netif_receive_skb_list_internal+0x1bf/0x2e0 [ 17.698870] ? dev_gro_receive+0x4c2/0x680 [ 17.700255] napi_complete_done+0x6f/0x180 [ 17.701657] virtnet_poll+0x29c/0x42e [virtio_net] [ 17.703262] __napi_poll+0x2c/0x170 [ 17.704429] net_rx_action+0x22f/0x280 [ 17.705706] __do_softirq+0xfd/0x30a [ 17.706921] common_interrupt+0xa4/0xc0 [ 17.708206] </IRQ> [ 17.708922] <TASK> [ 17.709651] asm_common_interrupt+0x1e/0x40 [ 17.711078] RIP: 0010:default_idle+0x18/0x20 Fixes: 86c3a3e9 ("tipc: use consistent GFP flags") Acked-by:
Jon Maloy <jmaloy@redhat.com> Signed-off-by:
Hoang Le <hoang.h.le@dektech.com.au> Link: https://lore.kernel.org/r/20211217030059.5947-1-hoang.h.le@dektech.com.auSigned-off-by:
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Aleksander Jan Bajkowski authored
If the user sets a lower mtu on the CPU port than on the switch, then DMA inserts a few more bytes into the buffer than expected. In the worst case, it may exceed the size of the buffer. The experiments showed that the buffer should be a multiple of the burst length value. This patch rounds the length of the rx buffer upwards and fixes this bug. The reservation of FCS space in the buffer has been removed as PMAC strips the FCS. Fixes: 998ac358 ("net: lantiq: add support for jumbo frames") Reported-by:
Thomas Nixon <tom@tomn.co.uk> Signed-off-by:
Aleksander Jan Bajkowski <olek2@wp.pl> Signed-off-by:
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Jakub Kicinski authored
Paul Blakey says: ==================== net/sched: Fix ct zone matching for invalid conntrack state Currently, when a packet is marked as invalid conntrack_in in act_ct, post_ct will be set, and connection info (nf_conn) will be removed from the skb. Later openvswitch and flower matching will parse this as ct_state=+trk+inv. But because the connection info is missing, there is also no zone info to match against even though the packet is tracked. This series fixes that, by passing the last executed zone by act_ct. The zone info is passed along from act_ct to the ct flow dissector (used by flower to extract zone info) and to ovs, the same way as post_ct is passed, via qdisc layer skb cb to dissector, and via skb extension to OVS. Since adding any more data to qdisc skb cb, there will be no room for BPF skb cb to extend it and stay under skb->cb size, this series moves the tc related info from within qdisc skb cb to a tc specific cb that also extends it. ==================== Link: https://lore.kernel.org/r/20211214172435.24207-1-paulb@nvidia.comSigned-off-by:
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Paul Blakey authored
Zone id is not restored if we passed ct and ct rejected the connection, as there is no ct info on the skb. Save the zone from tc skb cb to tc skb extension and pass it on to ovs, use that info to restore the zone id for invalid connections. Fixes: d29334c1 ("net/sched: act_api: fix miss set post_ct for ovs after do conntrack in act_ct") Signed-off-by:
Paul Blakey <paulb@nvidia.com> Signed-off-by:
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Paul Blakey authored
If ct rejects a flow, it removes the conntrack info from the skb. act_ct sets the post_ct variable so the dissector will see this case as an +tracked +invalid state, but the zone id is lost with the conntrack info. To restore the zone id on such cases, set the last executed zone, via the tc control block, when passing ct, and read it back in the dissector if there is no ct info on the skb (invalid connection). Fixes: 7baf2429 ("net/sched: cls_flower add CT_FLAGS_INVALID flag support") Signed-off-by:
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Paul Blakey authored
BPF layer extends the qdisc control block via struct bpf_skb_data_end and because of that there is no more room to add variables to the qdisc layer control block without going over the skb->cb size. Extend the qdisc control block with a tc control block, and move all tc related variables to there as a pre-step for extending the tc control block with additional members. Signed-off-by:
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- 17 Dec, 2021 2 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfDavid S. Miller authored
Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: 1) Fix UAF in set catch-all element, from Eric Dumazet. 2) Fix MAC mangling for multicast/loopback traffic in nfnetlink_queue and nfnetlink_log, from Ignacy Gawędzki. 3) Remove expired entries from ctnetlink dump path regardless the tuple direction, from Florian Westphal. ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Xiang wangx authored
The double 'as' in a comment is repeated, thus it should be removed. Signed-off-by:
Xiang wangx <wangxiang@cdjrlc.com> Signed-off-by:
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- 16 Dec, 2021 29 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/auditLinus Torvalds authored
Pull audit fix from Paul Moore: "A single patch to fix a problem where the audit queue could grow unbounded when the audit daemon is forcibly stopped" * tag 'audit-pr-20211216' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit: audit: improve robustness of the audit queue handling
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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, including fixes from mac80211, wifi, bpf. Relatively large batches of fixes from BPF and the WiFi stack, calm in general networking. Current release - regressions: - dpaa2-eth: fix buffer overrun when reporting ethtool statistics Current release - new code bugs: - bpf: fix incorrect state pruning for <8B spill/fill - iavf: - add missing unlocks in iavf_watchdog_task() - do not override the adapter state in the watchdog task (again) - mlxsw: spectrum_router: consolidate MAC profiles when possible Previous releases - regressions: - mac80211 fixes: - rate control, avoid driver crash for retransmitted frames - regression in SSN handling of addba tx - a memory leak where sta_info is not freed - marking TX-during-stop for TX in in_reconfig, prevent stall - cfg80211: acquire wiphy mutex on regulatory work - wifi drivers: fix build regressions and LED config dependency - virtio_net: fix rx_drops stat for small pkts - dsa: mv88e6xxx: unforce speed & duplex in mac_link_down() Previous releases - always broken: - bpf fixes: - kernel address leakage in atomic fetch - kernel address leakage in atomic cmpxchg's r0 aux reg - signed bounds propagation after mov32 - extable fixup offset - extable address check - mac80211: - fix the size used for building probe request - send ADDBA requests using the tid/queue of the aggregation session - agg-tx: don't schedule_and_wake_txq() under sta->lock, avoid deadlocks - validate extended element ID is present - mptcp: - never allow the PM to close a listener subflow (null-defer) - clear 'kern' flag from fallback sockets, prevent crash - fix deadlock in __mptcp_push_pending() - inet_diag: fix kernel-infoleak for UDP sockets - xsk: do not sleep in poll() when need_wakeup set - smc: avoid very long waits in smc_release() - sch_ets: don't remove idle classes from the round-robin list - netdevsim: - zero-initialize memory for bpf map's value, prevent info leak - don't let user space overwrite read only (max) ethtool parms - ixgbe: set X550 MDIO speed before talking to PHY - stmmac: - fix null-deref in flower deletion w/ VLAN prio Rx steering - dwmac-rk: fix oob read in rk_gmac_setup - ice: time stamping fixes - systemport: add global locking for descriptor life cycle" * tag 'net-5.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (89 commits) bpf, selftests: Fix racing issue in btf_skc_cls_ingress test selftest/bpf: Add a test that reads various addresses. bpf: Fix extable address check. bpf: Fix extable fixup offset. bpf, selftests: Add test case trying to taint map value pointer bpf: Make 32->64 bounds propagation slightly more robust bpf: Fix signed bounds propagation after mov32 sit: do not call ipip6_dev_free() from sit_init_net() net: systemport: Add global locking for descriptor lifecycle net/smc: Prevent smc_release() from long blocking net: Fix double 0x prefix print in SKB dump virtio_net: fix rx_drops stat for small pkts dsa: mv88e6xxx: fix debug print for SPEED_UNFORCED sfc_ef100: potential dereference of null pointer net: stmmac: dwmac-rk: fix oob read in rk_gmac_setup net: usb: lan78xx: add Allied Telesis AT29M2-AF net/packet: rx_owner_map depends on pg_vec netdevsim: Zero-initialize memory for new map's value in function nsim_bpf_map_alloc dpaa2-eth: fix ethtool statistics ixgbe: set X550 MDIO speed before talking to PHY ... -
git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds authored
Pull ARM SoC fixes from Arnd Bergmann: "There are a number of DT fixes, mostly for mistakes found through static checking of the dts files again, as well as a couple of minor changes to address incorrect DT settings. For i.MX, there is yet another series of devitree changes to update RGMII delay settings for ethernet, which is an ongoing problem after some driver changes. For SoC specific device drivers, a number of smaller fixes came up: - i.MX SoC identification was incorrectly registered non-i.MX machines when the driver is built-in - One fix on imx8m-blk-ctrl driver to get i.MX8MM MIPI reset work properly - a few compile fixes for warnings that get in the way of -Werror - a string overflow in the scpi firmware driver - a boot failure with FORTIFY_SOURCE on Rockchips machines - broken error handling in the AMD TEE driver - a revert for a tegra reset driver commit that broke HDA" * tag 'soc-fixes-5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (25 commits) soc/tegra: fuse: Fix bitwise vs. logical OR warning firmware: arm_scpi: Fix string overflow in SCPI genpd driver soc: imx: Register SoC device only on i.MX boards soc: imx: imx8m-blk-ctrl: Fix imx8mm mipi reset ARM: dts: imx6ull-pinfunc: Fix CSI_DATA07__ESAI_TX0 pad name arm64: dts: imx8mq: remove interconnect property from lcdif ARM: socfpga: dts: fix qspi node compatible arm64: dts: apple: add #interrupt-cells property to pinctrl nodes dt-bindings: i2c: apple,i2c: allow multiple compatibles arm64: meson: remove COMMON_CLK arm64: meson: fix dts for JetHub D1 tee: amdtee: fix an IS_ERR() vs NULL bug arm64: dts: apple: change ethernet0 device type to ethernet arm64: dts: ten64: remove redundant interrupt declaration for gpio-keys arm64: dts: rockchip: fix poweroff on helios64 arm64: dts: rockchip: fix audio-supply for Rock Pi 4 arm64: dts: rockchip: fix rk3399-leez-p710 vcc3v3-lan supply arm64: dts: rockchip: fix rk3308-roc-cc vcc-sd supply arm64: dts: rockchip: remove mmc-hs400-enhanced-strobe from rk3399-khadas-edge ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up ... -
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfJakub Kicinski authored
Daniel Borkmann says: ==================== pull-request: bpf 2021-12-16 We've added 15 non-merge commits during the last 7 day(s) which contain a total of 12 files changed, 434 insertions(+), 30 deletions(-). The main changes are: 1) Fix incorrect verifier state pruning behavior for <8B register spill/fill, from Paul Chaignon. 2) Fix x86-64 JIT's extable handling for fentry/fexit when return pointer is an ERR_PTR(), from Alexei Starovoitov. 3) Fix 3 different possibilities that BPF verifier missed where unprivileged could leak kernel addresses, from Daniel Borkmann. 4) Fix xsk's poll behavior under need_wakeup flag, from Magnus Karlsson. 5) Fix an oob-write in test_verifier due to a missed MAX_NR_MAPS bump, from Kumar Kartikeya Dwivedi. 6) Fix a race in test_btf_skc_cls_ingress selftest, from Martin KaFai Lau. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: bpf, selftests: Fix racing issue in btf_skc_cls_ingress test selftest/bpf: Add a test that reads various addresses. bpf: Fix extable address check. bpf: Fix extable fixup offset. bpf, selftests: Add test case trying to taint map value pointer bpf: Make 32->64 bounds propagation slightly more robust bpf: Fix signed bounds propagation after mov32 bpf, selftests: Update test case for atomic cmpxchg on r0 with pointer bpf: Fix kernel address leakage in atomic cmpxchg's r0 aux reg bpf, selftests: Add test case for atomic fetch on spilled pointer bpf: Fix kernel address leakage in atomic fetch selftests/bpf: Fix OOB write in test_verifier xsk: Do not sleep in poll() when need_wakeup set selftests/bpf: Tests for state pruning with u32 spill/fill bpf: Fix incorrect state pruning for <8B spill/fill ==================== Link: https://lore.kernel.org/r/20211216210005.13815-1-daniel@iogearbox.netSigned-off-by:
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Martin KaFai Lau authored
The libbpf CI reported occasional failure in btf_skc_cls_ingress: test_syncookie:FAIL:Unexpected syncookie states gen_cookie:80326634 recv_cookie:0 bpf prog error at line 97 "error at line 97" means the bpf prog cannot find the listening socket when the final ack is received. It then skipped processing the syncookie in the final ack which then led to "recv_cookie:0". The problem is the userspace program did not do accept() and went ahead to close(listen_fd) before the kernel (and the bpf prog) had a chance to process the final ack. The fix is to add accept() call so that the userspace will wait for the kernel to finish processing the final ack first before close()-ing everything. Fixes: 9a856cae ("bpf: selftest: Add test_btf_skc_cls_ingress") Reported-by:
Andrii Nakryiko <andrii@kernel.org> Signed-off-by:
Martin KaFai Lau <kafai@fb.com> Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20211216191630.466151-1-kafai@fb.com
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Alexei Starovoitov authored
Add a function to bpf_testmod that returns invalid kernel and user addresses. Then attach an fexit program to that function that tries to read memory through these addresses. This logic checks that bpf_probe_read_kernel and BPF_PROBE_MEM logic is sane. Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
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Alexei Starovoitov authored
The verifier checks that PTR_TO_BTF_ID pointer is either valid or NULL, but it cannot distinguish IS_ERR pointer from valid one. When offset is added to IS_ERR pointer it may become small positive value which is a user address that is not handled by extable logic and has to be checked for at the runtime. Tighten BPF_PROBE_MEM pointer check code to prevent this case. Fixes: 4c5de127 ("bpf: Emit explicit NULL pointer checks for PROBE_LDX instructions.") Reported-by:
Lorenzo Fontana <lorenzo.fontana@elastic.co> Signed-off-by:
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Alexei Starovoitov authored
The prog - start_of_ldx is the offset before the faulting ldx to the location after it, so this will be used to adjust pt_regs->ip for jumping over it and continuing, and with old temp it would have been fixed up to the wrong offset, causing crash. Fixes: 4c5de127 ("bpf: Emit explicit NULL pointer checks for PROBE_LDX instructions.") Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fix from Stephen Boyd: "A single fix for the clk framework that needed some more bake time in linux-next. The problem is that two clks being registered at the same time can lead to a busted clk tree if the parent isn't fully registered by the time the child finds the parent. We rejigger the place where we mark the parent as fully registered so that the child can't find the parent until things are proper" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: Don't parent clks until the parent is fully registered
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Daniel Borkmann authored
Add a test case which tries to taint map value pointer arithmetic into a unknown scalar with subsequent export through the map. Before fix: # ./test_verifier 1186 #1186/u map access: trying to leak tained dst reg FAIL Unexpected success to load! verification time 24 usec stack depth 8 processed 15 insns (limit 1000000) max_states_per_insn 0 total_states 1 peak_states 1 mark_read 1 #1186/p map access: trying to leak tained dst reg FAIL Unexpected success to load! verification time 8 usec stack depth 8 processed 15 insns (limit 1000000) max_states_per_insn 0 total_states 1 peak_states 1 mark_read 1 Summary: 0 PASSED, 0 SKIPPED, 2 FAILED After fix: # ./test_verifier 1186 #1186/u map access: trying to leak tained dst reg OK #1186/p map access: trying to leak tained dst reg OK Summary: 2 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by:
John Fastabend <john.fastabend@gmail.com> Acked-by:
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Daniel Borkmann authored
Make the bounds propagation in __reg_assign_32_into_64() slightly more robust and readable by aligning it similarly as we did back in the __reg_combine_64_into_32() counterpart. Meaning, only propagate or pessimize them as a smin/smax pair. Signed-off-by:
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Daniel Borkmann authored
For the case where both s32_{min,max}_value bounds are positive, the __reg_assign_32_into_64() directly propagates them to their 64 bit counterparts, otherwise it pessimises them into [0,u32_max] universe and tries to refine them later on by learning through the tnum as per comment in mentioned function. However, that does not always happen, for example, in mov32 operation we call zext_32_to_64(dst_reg) which invokes the __reg_assign_32_into_64() as is without subsequent bounds update as elsewhere thus no refinement based on tnum takes place. Thus, not calling into the __update_reg_bounds() / __reg_deduce_bounds() / __reg_bound_offset() triplet as we do, for example, in case of ALU ops via adjust_scalar_min_max_vals(), will lead to more pessimistic bounds when dumping the full register state: Before fix: 0: (b4) w0 = -1 1: R0_w=invP4294967295 (id=0,imm=ffffffff, smin_value=4294967295,smax_value=4294967295, umin_value=4294967295,umax_value=4294967295, var_off=(0xffffffff; 0x0), s32_min_value=-1,s32_max_value=-1, u32_min_value=-1,u32_max_value=-1) 1: (bc) w0 = w0 2: R0_w=invP4294967295 (id=0,imm=ffffffff, smin_value=0,smax_value=4294967295, umin_value=4294967295,umax_value=4294967295, var_off=(0xffffffff; 0x0), s32_min_value=-1,s32_max_value=-1, u32_min_value=-1,u32_max_value=-1) Technically, the smin_value=0 and smax_value=4294967295 bounds are not incorrect, but given the register is still a constant, they break assumptions about const scalars that smin_value == smax_value and umin_value == umax_value. After fix: 0: (b4) w0 = -1 1: R0_w=invP4294967295 (id=0,imm=ffffffff, smin_value=4294967295,smax_value=4294967295, umin_value=4294967295,umax_value=4294967295, var_off=(0xffffffff; 0x0), s32_min_value=-1,s32_max_value=-1, u32_min_value=-1,u32_max_value=-1) 1: (bc) w0 = w0 2: R0_w=invP4294967295 (id=0,imm=ffffffff, smin_value=4294967295,smax_value=4294967295, umin_value=4294967295,umax_value=4294967295, var_off=(0xffffffff; 0x0), s32_min_value=-1,s32_max_value=-1, u32_min_value=-1,u32_max_value=-1) Without the smin_value == smax_value and umin_value == umax_value invariant being intact for const scalars, it is possible to leak out kernel pointers from unprivileged user space if the latter is enabled. For example, when such registers are involved in pointer arithmtics, then adjust_ptr_min_max_vals() will taint the destination register into an unknown scalar, and the latter can be exported and stored e.g. into a BPF map value. Fixes: 3f50f132 ("bpf: Verifier, do explicit ALU32 bounds tracking") Reported-by:Kuee K1r0a <liulin063@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fix from Catalin Marinas: "Fix missing error code on kexec failure path" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: kexec: Fix missing error code 'ret' warning in load_other_segments()
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Linus Torvalds authored
Merge tag 'for-5.16/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: - Fix use after free in DM btree remove's rebalance_children() - Fix DM integrity data corruption, introduced during 5.16 merge, due to improper use of bvec_kmap_local() * tag 'for-5.16/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm integrity: fix data corruption due to improper use of bvec_kmap_local dm btree remove: fix use after free in rebalance_children()
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Lakshmi Ramasubramanian authored
Since commit ac10be5c ("arm64: Use common of_kexec_alloc_and_setup_fdt()"), smatch reports the following warning: arch/arm64/kernel/machine_kexec_file.c:152 load_other_segments() warn: missing error code 'ret' Return code is not set to an error code in load_other_segments() when of_kexec_alloc_and_setup_fdt() call returns a NULL dtb. This results in status success (return code set to 0) being returned from load_other_segments(). Set return code to -EINVAL if of_kexec_alloc_and_setup_fdt() returns NULL dtb. Signed-off-by:
Lakshmi Ramasubramanian <nramas@linux.microsoft.com> Reported-by:
kernel test robot <lkp@intel.com> Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Fixes: ac10be5c ("arm64: Use common of_kexec_alloc_and_setup_fdt()") Link: https://lore.kernel.org/r/20211210010121.101823-1-nramas@linux.microsoft.comSigned-off-by:
Will Deacon <will@kernel.org> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com>
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David Howells authored
Fix afs_add_open_map() to check that the vnode isn't already on the list when it adds it. It's possible that afs_drop_open_mmap() decremented the cb_nr_mmap counter, but hadn't yet got into the locked section to remove it. Also vnode->cb_mmap_link should be initialised, so fix that too. Fixes: 6e0e99d5 ("afs: Fix mmap coherency vs 3rd-party changes") Reported-by: kafs-testing+fedora34_64checkkafs-build-300@auristor.com Suggested-by:
Marc Dionne <marc.dionne@auristor.com> Signed-off-by:
David Howells <dhowells@redhat.com> Tested-by: kafs-testing+fedora34_64checkkafs-build-300@auristor.com cc: linux-afs@lists.infradead.org Link: https://lore.kernel.org/r/686465.1639435380@warthog.procyon.org.uk/ # v1 Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Eric Dumazet authored
ipip6_dev_free is sit dev->priv_destructor, already called by register_netdevice() if something goes wrong. Alternative would be to make ipip6_dev_free() robust against multiple invocations, but other drivers do not implement this strategy. syzbot reported: dst_release underflow WARNING: CPU: 0 PID: 5059 at net/core/dst.c:173 dst_release+0xd8/0xe0 net/core/dst.c:173 Modules linked in: CPU: 1 PID: 5059 Comm: syz-executor.4 Not tainted 5.16.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dst_release+0xd8/0xe0 net/core/dst.c:173 Code: 4c 89 f2 89 d9 31 c0 5b 41 5e 5d e9 da d5 44 f9 e8 1d 90 5f f9 c6 05 87 48 c6 05 01 48 c7 c7 80 44 99 8b 31 c0 e8 e8 67 29 f9 <0f> 0b eb 85 0f 1f 40 00 53 48 89 fb e8 f7 8f 5f f9 48 83 c3 a8 48 RSP: 0018:ffffc9000aa5faa0 EFLAGS: 00010246 RAX: d6894a925dd15a00 RBX: 00000000ffffffff RCX: 0000000000040000 RDX: ffffc90005e19000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000000 R08: ffffffff816a1f42 R09: ffffed1017344f2c R10: ffffed1017344f2c R11: 0000000000000000 R12: 0000607f462b1358 R13: 1ffffffff1bfd305 R14: ffffe8ffffcb1358 R15: dffffc0000000000 FS: 00007f66c71a2700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f88aaed5058 CR3: 0000000023e0f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> dst_cache_destroy+0x107/0x1e0 net/core/dst_cache.c:160 ipip6_dev_free net/ipv6/sit.c:1414 [inline] sit_init_net+0x229/0x550 net/ipv6/sit.c:1936 ops_init+0x313/0x430 net/core/net_namespace.c:140 setup_net+0x35b/0x9d0 net/core/net_namespace.c:326 copy_net_ns+0x359/0x5c0 net/core/net_namespace.c:470 create_new_namespaces+0x4ce/0xa00 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x11e/0x180 kernel/nsproxy.c:226 ksys_unshare+0x57d/0xb50 kernel/fork.c:3075 __do_sys_unshare kernel/fork.c:3146 [inline] __se_sys_unshare kernel/fork.c:3144 [inline] __x64_sys_unshare+0x34/0x40 kernel/fork.c:3144 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f66c882ce99 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f66c71a2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f66c893ff60 RCX: 00007f66c882ce99 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000048040200 RBP: 00007f66c8886ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6634832f R14: 00007f66c71a2300 R15: 0000000000022000 </TASK> Fixes: cf124db5 ("net: Fix inconsistent teardown and release of private netdev state.") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
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Florian Fainelli authored
The descriptor list is a shared resource across all of the transmit queues, and the locking mechanism used today only protects concurrency across a given transmit queue between the transmit and reclaiming. This creates an opportunity for the SYSTEMPORT hardware to work on corrupted descriptors if we have multiple producers at once which is the case when using multiple transmit queues. This was particularly noticeable when using multiple flows/transmit queues and it showed up in interesting ways in that UDP packets would get a correct UDP header checksum being calculated over an incorrect packet length. Similarly TCP packets would get an equally correct checksum computed by the hardware over an incorrect packet length. The SYSTEMPORT hardware maintains an internal descriptor list that it re-arranges when the driver produces a new descriptor anytime it writes to the WRITE_PORT_{HI,LO} registers, there is however some delay in the hardware to re-organize its descriptors and it is possible that concurrent TX queues eventually break this internal allocation scheme to the point where the length/status part of the descriptor gets used for an incorrect data buffer. The fix is to impose a global serialization for all TX queues in the short section where we are writing to the WRITE_PORT_{HI,LO} registers which solves the corruption even with multiple concurrent TX queues being used. Fixes: 80105bef ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver") Signed-off-by:Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20211215202450.4086240-1-f.fainelli@gmail.comSigned-off-by:
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D. Wythe authored
In nginx/wrk benchmark, there's a hung problem with high probability on case likes that: (client will last several minutes to exit) server: smc_run nginx client: smc_run wrk -c 10000 -t 1 http://server Client hangs with the following backtrace: 0 [ffffa7ce8Of3bbf8] __schedule at ffffffff9f9eOd5f 1 [ffffa7ce8Of3bc88] schedule at ffffffff9f9eløe6 2 [ffffa7ce8Of3bcaO] schedule_timeout at ffffffff9f9e3f3c 3 [ffffa7ce8Of3bd2O] wait_for_common at ffffffff9f9el9de 4 [ffffa7ce8Of3bd8O] __flush_work at ffffffff9fOfeOl3 5 [ffffa7ce8øf3bdfO] smc_release at ffffffffcO697d24 [smc] 6 [ffffa7ce8Of3be2O] __sock_release at ffffffff9f8O2e2d 7 [ffffa7ce8Of3be4ø] sock_close at ffffffff9f8ø2ebl 8 [ffffa7ce8øf3be48] __fput at ffffffff9f334f93 9 [ffffa7ce8Of3be78] task_work_run at ffffffff9flOlff5 10 [ffffa7ce8Of3beaO] do_exit at ffffffff9fOe5Ol2 11 [ffffa7ce8Of3bflO] do_group_exit at ffffffff9fOe592a 12 [ffffa7ce8Of3bf38] __x64_sys_exit_group at ffffffff9fOe5994 13 [ffffa7ce8Of3bf4O] do_syscall_64 at ffffffff9f9d4373 14 [ffffa7ce8Of3bfsO] entry_SYSCALL_64_after_hwframe at ffffffff9fa0007c This issue dues to flush_work(), which is used to wait for smc_connect_work() to finish in smc_release(). Once lots of smc_connect_work() was pending or all executing work dangling, smc_release() has to block until one worker comes to free, which is equivalent to wait another smc_connnect_work() to finish. In order to fix this, There are two changes: 1. For those idle smc_connect_work(), cancel it from the workqueue; for executing smc_connect_work(), waiting for it to finish. For that purpose, replace flush_work() with cancel_work_sync(). 2. Since smc_connect() hold a reference for passive closing, if smc_connect_work() has been cancelled, release the reference. Fixes: 24ac3a08 ("net/smc: rebuild nonblocking connect") Reported-by:
Tony Lu <tonylu@linux.alibaba.com> Tested-by:
Dust Li <dust.li@linux.alibaba.com> Reviewed-by:
D. Wythe <alibuda@linux.alibaba.com> Acked-by:
Karsten Graul <kgraul@linux.ibm.com> Link: https://lore.kernel.org/r/1639571361-101128-1-git-send-email-alibuda@linux.alibaba.comSigned-off-by:
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Arnd Bergmann authored
Merge tag 'tegra-for-5.16-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/fixes soc/tegra: Fixes for v5.16-rc6 This contains a single build fix without which ARM allmodconfig builds are broken if -Werror is enabled. * tag 'tegra-for-5.16-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: soc/tegra: fuse: Fix bitwise vs. logical OR warning Link: https://lore.kernel.org/r/20211215162618.3568474-1-thierry.reding@gmail.comSigned-off-by:
Arnd Bergmann <arnd@arndb.de>
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Florian Westphal authored
When dumping conntrack table to userspace via ctnetlink, check if the ct has already expired before doing any of the 'skip' checks. This expires dead entries faster. /proc handler also removes outdated entries first. Reported-by:
Vitaly Zuevsky <vzuevsky@ns1.com> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
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Gal Pressman authored
When printing netdev features %pNF already takes care of the 0x prefix, remove the explicit one. Fixes: 6413139d ("skbuff: increase verbosity when dumping skb data") Signed-off-by:
Gal Pressman <gal@nvidia.com> Signed-off-by:
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Wenliang Wang authored
We found the stat of rx drops for small pkts does not increment when build_skb fail, it's not coherent with other mode's rx drops stat. Signed-off-by:
Wenliang Wang <wangwenliang.1995@bytedance.com> Acked-by:
Jason Wang <jasowang@redhat.com> Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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Andrey Eremeev authored
Debug print uses invalid check to detect if speed is unforced: (speed != SPEED_UNFORCED) should be used instead of (!speed). Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by:
Andrey Eremeev <Axtone4all@yandex.ru> Fixes: 96a2b40c ("net: dsa: mv88e6xxx: add port's MAC speed setter") Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Jiasheng Jiang authored
The return value of kmalloc() needs to be checked. To avoid use in efx_nic_update_stats() in case of the failure of alloc. Fixes: b593b6f1 ("sfc_ef100: statistics gathering") Signed-off-by:
Jiasheng Jiang <jiasheng@iscas.ac.cn> Reported-by:
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John Keeping authored
KASAN reports an out-of-bounds read in rk_gmac_setup on the line: while (ops->regs[i]) { This happens for most platforms since the regs flexible array member is empty, so the memory after the ops structure is being read here. It seems that mostly this happens to contain zero anyway, so we get lucky and everything still works. To avoid adding redundant data to nearly all the ops structures, add a new flag to indicate whether the regs field is valid and avoid this loop when it is not. Fixes: 3bb3d6b1 ("net: stmmac: Add RK3566/RK3568 SoC support") Signed-off-by:John Keeping <john@metanate.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queueDavid S. Miller authored
Tony Nguyen says: ==================== Intel Wired LAN Driver Updates 2021-12-15 This series contains updates to igb, igbvf, igc and ixgbe drivers. Karen moves checks for invalid VF MAC filters to occur earlier for igb. Letu Ren fixes a double free issue in igbvf probe. Sasha fixes incorrect min value being used when calculating for max for igc. Robert Schlabbach adds documentation on enabling NBASE-T support for ixgbe. Cyril Novikov adds missing initialization of MDIO bus speed for ixgbe. ==================== Signed-off-by: -
Greg Jesionowski authored
This adds the vendor and product IDs for the AT29M2-AF which is a lan7801-based device. Signed-off-by:
Greg Jesionowski <jesionowskigreg@gmail.com> Link: https://lore.kernel.org/r/20211214221027.305784-1-jesionowskigreg@gmail.comSigned-off-by:
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Willem de Bruijn authored
Packet sockets may switch ring versions. Avoid misinterpreting state between versions, whose fields share a union. rx_owner_map is only allocated with a packet ring (pg_vec) and both are swapped together. If pg_vec is NULL, meaning no packet ring was allocated, then neither was rx_owner_map. And the field may be old state from a tpacket_v3. Fixes: 61fad681 ("net/packet: tpacket_rcv: avoid a producer race condition") Reported-by:
Syzbot <syzbot+1ac0994a0a0c55151121@syzkaller.appspotmail.com> Signed-off-by:
Willem de Bruijn <willemb@google.com> Reviewed-by:
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