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2024-11-11selftests: ncdevmem: Unify error handlingStanislav Fomichev
There is a bunch of places where error() calls look out of place. Use the same error(1, errno, ...) pattern everywhere. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-4-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Separate out dmabuf providerStanislav Fomichev
So we can plug the other ones in the future if needed. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-3-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: ncdevmem: Redirect all non-payload output to stderrStanislav Fomichev
That should make it possible to do expected payload validation on the caller side. Reviewed-by: Mina Almasry <almasrymina@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Signed-off-by: Stanislav Fomichev <sdf@fomichev.me> Link: https://patch.msgid.link/20241107181211.3934153-2-sdf@fomichev.me Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: hsr: Add test for VLANMD Danish Anwar
Add test for VLAN ping for HSR. The test adds vlan interfaces to the hsr interface and then verifies if ping to them works. Signed-off-by: MD Danish Anwar <danishanwar@ti.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20241106091710.3308519-5-danishanwar@ti.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11ipv6: Fix soft lockups in fib6_select_path under high next hop churnOmid Ehtemam-Haghighi
Soft lockups have been observed on a cluster of Linux-based edge routers located in a highly dynamic environment. Using the `bird` service, these routers continuously update BGP-advertised routes due to frequently changing nexthop destinations, while also managing significant IPv6 traffic. The lockups occur during the traversal of the multipath circular linked-list in the `fib6_select_path` function, particularly while iterating through the siblings in the list. The issue typically arises when the nodes of the linked list are unexpectedly deleted concurrently on a different core—indicated by their 'next' and 'previous' elements pointing back to the node itself and their reference count dropping to zero. This results in an infinite loop, leading to a soft lockup that triggers a system panic via the watchdog timer. Apply RCU primitives in the problematic code sections to resolve the issue. Where necessary, update the references to fib6_siblings to annotate or use the RCU APIs. Include a test script that reproduces the issue. The script periodically updates the routing table while generating a heavy load of outgoing IPv6 traffic through multiple iperf3 clients. It consistently induces infinite soft lockups within a couple of minutes. Kernel log: 0 [ffffbd13003e8d30] machine_kexec at ffffffff8ceaf3eb 1 [ffffbd13003e8d90] __crash_kexec at ffffffff8d0120e3 2 [ffffbd13003e8e58] panic at ffffffff8cef65d4 3 [ffffbd13003e8ed8] watchdog_timer_fn at ffffffff8d05cb03 4 [ffffbd13003e8f08] __hrtimer_run_queues at ffffffff8cfec62f 5 [ffffbd13003e8f70] hrtimer_interrupt at ffffffff8cfed756 6 [ffffbd13003e8fd0] __sysvec_apic_timer_interrupt at ffffffff8cea01af 7 [ffffbd13003e8ff0] sysvec_apic_timer_interrupt at ffffffff8df1b83d -- <IRQ stack> -- 8 [ffffbd13003d3708] asm_sysvec_apic_timer_interrupt at ffffffff8e000ecb [exception RIP: fib6_select_path+299] RIP: ffffffff8ddafe7b RSP: ffffbd13003d37b8 RFLAGS: 00000287 RAX: ffff975850b43600 RBX: ffff975850b40200 RCX: 0000000000000000 RDX: 000000003fffffff RSI: 0000000051d383e4 RDI: ffff975850b43618 RBP: ffffbd13003d3800 R8: 0000000000000000 R9: ffff975850b40200 R10: 0000000000000000 R11: 0000000000000000 R12: ffffbd13003d3830 R13: ffff975850b436a8 R14: ffff975850b43600 R15: 0000000000000007 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 9 [ffffbd13003d3808] ip6_pol_route at ffffffff8ddb030c 10 [ffffbd13003d3888] ip6_pol_route_input at ffffffff8ddb068c 11 [ffffbd13003d3898] fib6_rule_lookup at ffffffff8ddf02b5 12 [ffffbd13003d3928] ip6_route_input at ffffffff8ddb0f47 13 [ffffbd13003d3a18] ip6_rcv_finish_core.constprop.0 at ffffffff8dd950d0 14 [ffffbd13003d3a30] ip6_list_rcv_finish.constprop.0 at ffffffff8dd96274 15 [ffffbd13003d3a98] ip6_sublist_rcv at ffffffff8dd96474 16 [ffffbd13003d3af8] ipv6_list_rcv at ffffffff8dd96615 17 [ffffbd13003d3b60] __netif_receive_skb_list_core at ffffffff8dc16fec 18 [ffffbd13003d3be0] netif_receive_skb_list_internal at ffffffff8dc176b3 19 [ffffbd13003d3c50] napi_gro_receive at ffffffff8dc565b9 20 [ffffbd13003d3c80] ice_receive_skb at ffffffffc087e4f5 [ice] 21 [ffffbd13003d3c90] ice_clean_rx_irq at ffffffffc0881b80 [ice] 22 [ffffbd13003d3d20] ice_napi_poll at ffffffffc088232f [ice] 23 [ffffbd13003d3d80] __napi_poll at ffffffff8dc18000 24 [ffffbd13003d3db8] net_rx_action at ffffffff8dc18581 25 [ffffbd13003d3e40] __do_softirq at ffffffff8df352e9 26 [ffffbd13003d3eb0] run_ksoftirqd at ffffffff8ceffe47 27 [ffffbd13003d3ec0] smpboot_thread_fn at ffffffff8cf36a30 28 [ffffbd13003d3ee8] kthread at ffffffff8cf2b39f 29 [ffffbd13003d3f28] ret_from_fork at ffffffff8ce5fa64 30 [ffffbd13003d3f50] ret_from_fork_asm at ffffffff8ce03cbb Fixes: 66f5d6ce53e6 ("ipv6: replace rwlock with rcu and spinlock in fib6_table") Reported-by: Adrian Oliver <kernel@aoliver.ca> Signed-off-by: Omid Ehtemam-Haghighi <omid.ehtemamhaghighi@menlosecurity.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Ido Schimmel <idosch@idosch.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Simon Horman <horms@kernel.org> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/20241106010236.1239299-1-omid.ehtemamhaghighi@menlosecurity.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: netdevsim: add ethtool features to macsec offload testsSabrina Dubroca
The test verifies that available features aren't changed by toggling offload on the device. Creating a device with offload off and then enabling it later should result in the same features as creating the device with offload enabled directly. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/ba801bd0a75b02de2dddbfc77f9efceb8b3d8a2e.1730929545.git.sd@queasysnail.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: netdevsim: add test toggling macsec offloadSabrina Dubroca
The test verifies that toggling offload works (both via rtnetlink and macsec's genetlink APIs). This is only possible when no SA is configured. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/bf8e27ee0d921caa4eb35f1e830eca6d4080ddb2.1730929545.git.sd@queasysnail.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: move macsec offload tests from net/rtnetlink to drivers/net/netdvesimSabrina Dubroca
We're going to expand this test, and macsec offload is only lightly related to rtnetlink. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/a1f92c250cc129b4bb111a206c4b560bab4e24a5.1730929545.git.sd@queasysnail.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11selftests: netdevsim: add a test checking ethtool featuresSabrina Dubroca
Add a test checking that some features are active by default and changeable. Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/fff58fa70f8a300440958b5020f6a4eb2e9dad61.1730929545.git.sd@queasysnail.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11mm: page_frag: avoid caller accessing 'page_frag_cache' directlyYunsheng Lin
Use appropriate frag_page API instead of caller accessing 'page_frag_cache' directly. CC: Andrew Morton <akpm@linux-foundation.org> CC: Linux-MM <linux-mm@kvack.org> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Acked-by: Chuck Lever <chuck.lever@oracle.com> Link: https://patch.msgid.link/20241028115343.3405838-5-linyunsheng@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11mm: move the page fragment allocator from page_alloc into its own fileYunsheng Lin
Inspired by [1], move the page fragment allocator from page_alloc into its own c file and header file, as we are about to make more change for it to replace another page_frag implementation in sock.c As this patchset is going to replace 'struct page_frag' with 'struct page_frag_cache' in sched.h, including page_frag_cache.h in sched.h has a compiler error caused by interdependence between mm_types.h and mm.h for asm-offsets.c, see [2]. So avoid the compiler error by moving 'struct page_frag_cache' to mm_types_task.h as suggested by Alexander, see [3]. 1. https://lore.kernel.org/all/20230411160902.4134381-3-dhowells@redhat.com/ 2. https://lore.kernel.org/all/15623dac-9358-4597-b3ee-3694a5956920@gmail.com/ 3. https://lore.kernel.org/all/CAKgT0UdH1yD=LSCXFJ=YM_aiA4OomD-2wXykO42bizaWMt_HOA@mail.gmail.com/ CC: David Howells <dhowells@redhat.com> CC: Linux-MM <linux-mm@kvack.org> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Link: https://patch.msgid.link/20241028115343.3405838-3-linyunsheng@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-11mm: page_frag: add a test module for page_fragYunsheng Lin
The testing is done by ensuring that the fragment allocated from a frag_frag_cache instance is pushed into a ptr_ring instance in a kthread binded to a specified cpu, and a kthread binded to a specified cpu will pop the fragment from the ptr_ring and free the fragment. CC: Andrew Morton <akpm@linux-foundation.org> CC: Linux-MM <linux-mm@kvack.org> Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Link: https://patch.msgid.link/20241028115343.3405838-2-linyunsheng@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-09bridge: Allow deleting FDB entries with non-existent VLANIdo Schimmel
It is currently impossible to delete individual FDB entries (as opposed to flushing) that were added with a VLAN that no longer exists: # ip link add name dummy1 up type dummy # ip link add name br1 up type bridge vlan_filtering 1 # ip link set dev dummy1 master br1 # bridge fdb add 00:11:22:33:44:55 dev dummy1 master static vlan 1 # bridge vlan del vid 1 dev dummy1 # bridge fdb get 00:11:22:33:44:55 br br1 vlan 1 00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static # bridge fdb del 00:11:22:33:44:55 dev dummy1 master vlan 1 RTNETLINK answers: Invalid argument # bridge fdb get 00:11:22:33:44:55 br br1 vlan 1 00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static This is in contrast to MDB entries that can be deleted after the VLAN was deleted: # bridge vlan add vid 10 dev dummy1 # bridge mdb add dev br1 port dummy1 grp 239.1.1.1 permanent vid 10 # bridge vlan del vid 10 dev dummy1 # bridge mdb get dev br1 grp 239.1.1.1 vid 10 dev br1 port dummy1 grp 239.1.1.1 permanent vid 10 # bridge mdb del dev br1 port dummy1 grp 239.1.1.1 permanent vid 10 # bridge mdb get dev br1 grp 239.1.1.1 vid 10 Error: bridge: MDB entry not found. Align the two interfaces and allow user space to delete FDB entries that were added with a VLAN that no longer exists: # ip link add name dummy1 up type dummy # ip link add name br1 up type bridge vlan_filtering 1 # ip link set dev dummy1 master br1 # bridge fdb add 00:11:22:33:44:55 dev dummy1 master static vlan 1 # bridge vlan del vid 1 dev dummy1 # bridge fdb get 00:11:22:33:44:55 br br1 vlan 1 00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static # bridge fdb del 00:11:22:33:44:55 dev dummy1 master vlan 1 # bridge fdb get 00:11:22:33:44:55 br br1 vlan 1 Error: Fdb entry not found. Add a selftest to make sure this behavior does not regress: # ./rtnetlink.sh -t kci_test_fdb_del PASS: bridge fdb del Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Andy Roulin <aroulin@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20241105133954.350479-1-idosch@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.12-rc7). Conflicts: drivers/net/ethernet/freescale/enetc/enetc_pf.c e15c5506dd39 ("net: enetc: allocate vf_state during PF probes") 3774409fd4c6 ("net: enetc: build enetc_pf_common.c as a separate module") https://lore.kernel.org/20241105114100.118bd35e@canb.auug.org.au Adjacent changes: drivers/net/ethernet/ti/am65-cpsw-nuss.c de794169cf17 ("net: ethernet: ti: am65-cpsw: Fix multi queue Rx on J7") 4a7b2ba94a59 ("net: ethernet: ti: am65-cpsw: Use tstats instead of open coded version") Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-06selftests: net: really check for bg process completionPaolo Abeni
A recent refactor transformed the check for process completion in a true statement, due to a typo. As a result, the relevant test-case is unable to catch the regression it was supposed to detect. Restore the correct condition. Fixes: 691bb4e49c98 ("selftests: net: avoid just another constant wait") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://patch.msgid.link/0e6f213811f8e93a235307e683af8225cc6277ae.1730828007.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-06Merge tag 'tracefs-v6.12-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracefs fixes from Steven Rostedt: "Fix tracefs mount options. Commit 78ff64081949 ("vfs: Convert tracefs to use the new mount API") broke the gid setting when set by fstab or other mount utility. It is ignored when it is set. Fix the code so that it recognises the option again and will honor the settings on mount at boot up. Update the internal documentation and create a selftest to make sure it doesn't break again in the future" * tag 'tracefs-v6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing/selftests: Add tracefs mount options test tracing: Document tracefs gid mount option tracing: Fix tracefs mount options
2024-11-05selftests: netfilter: nft_queue.sh: fix warnings with socat 1.8.0.0Florian Westphal
Updated to a more recent socat release and saw this: socat E xioopen_ipdgram_listen(): unknown address family 0 socat W address is opened in read-write mode but only supports read-only First error is avoided via pf=ipv4 option, second one via -u (unidirectional) mode. Signed-off-by: Florian Westphal <fw@strlen.de> Link: https://patch.msgid.link/20241104142821.2608-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-05selftests: netfilter: run conntrack_dump_flush in netnsFlorian Westphal
This test will fail if the initial namespace has conntrack active due to unexpected number of flows returned on dump: conntrack_dump_flush.c:451:test_flush_by_zone:Expected ret (7) == 2 (2) test_flush_by_zone: Test failed FAIL conntrack_dump_flush.test_flush_by_zone not ok 2 conntrack_dump_flush.test_flush_by_zone Add a wrapper that unshares this program to avoid this problem. Signed-off-by: Florian Westphal <fw@strlen.de> Link: https://patch.msgid.link/20241104142529.2352-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-05selftests: net: include lib/sh/*.sh with lib.shMatthieu Baerts (NGI0)
Recently, the net/lib.sh file has been modified to include defer.sh from net/lib/sh/ directory. The Makefile from net/lib has been modified accordingly, but not the ones from the sub-targets using net/lib.sh. Because of that, the new file is not installed as expected when installing the Forwarding, MPTCP, and Netfilter targets, e.g. # make -C tools/testing/selftests TARGETS=net/mptcp install \ INSTALL_PATH=/tmp/kself # cd /tmp/kself/ # ./run_kselftest.sh -c net/mptcp TAP version 13 1..7 # timeout set to 1800 # selftests: net/mptcp: mptcp_connect.sh # ./../lib.sh: line 5: /tmp/kself/net/lib/sh/defer.sh: No such file or directory # (...) This can be fixed simply by adding all the .sh files from net/lib/sh directory to the TEST_INCLUDES variable in the different Makefile's. Fixes: a6e263f125cd ("selftests: net: lib: Introduce deferred commands") Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Reviewed-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/20241104-net-next-selftests-lib-sh-deps-v1-1-7c9f7d939fc2@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-04tools: ynl-gen: de-kdocify enums with no doc for entriesJakub Kicinski
Sometimes the names of the enum entries are self-explanatory or come from standards. Forcing authors to write trivial kdoc for each of such entries seems unreasonable, but kdoc would complain about undocumented entries. Detect enums which only have documentation for the entire type and no documentation for entries. Render their doc as a plain comment. Link: https://patch.msgid.link/20241103165314.1631237-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-03selftests/tc-testing: add tests for qdisc_tree_reduce_backlogPedro Tammela
Add 3 tests to check for the expected behaviour of qdisc_tree_reduce_backlog in special scenarios. - The first test checks if the qdisc class is notified of deletion for major handle 'ffff:'. - The second test checks the same as the first test but with 'ffff:' as the root qdisc. - The third test checks if everything works if ingress is active. Acked-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Pedro Tammela <pctammela@mojatatu.com> Acked-by: Cong Wang <cong.wang@bytedance.com> Link: https://patch.msgid.link/20241101143148.1218890-1-pctammela@mojatatu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-03Merge tag 'for-netdev' of ↵Jakub Kicinski
https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-10-31 We've added 13 non-merge commits during the last 16 day(s) which contain a total of 16 files changed, 710 insertions(+), 668 deletions(-). The main changes are: 1) Optimize and homogenize bpf_csum_diff helper for all archs and also add a batch of new BPF selftests for it, from Puranjay Mohan. 2) Rewrite and migrate the test_tcp_check_syncookie.sh BPF selftest into test_progs so that it can be run in BPF CI, from Alexis Lothoré. 3) Two BPF sockmap selftest fixes, from Zijian Zhang. 4) Small XDP synproxy BPF selftest cleanup to remove IP_DF check, from Vincent Li. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: selftests/bpf: Add a selftest for bpf_csum_diff() selftests/bpf: Don't mask result of bpf_csum_diff() in test_verifier bpf: bpf_csum_diff: Optimize and homogenize for all archs net: checksum: Move from32to16() to generic header selftests/bpf: remove xdp_synproxy IP_DF check selftests/bpf: remove test_tcp_check_syncookie selftests/bpf: test MSS value returned with bpf_tcp_gen_syncookie selftests/bpf: add ipv4 and dual ipv4/ipv6 support in btf_skc_cls_ingress selftests/bpf: get rid of global vars in btf_skc_cls_ingress selftests/bpf: add missing ns cleanups in btf_skc_cls_ingress selftests/bpf: factorize conn and syncookies tests in a single runner selftests/bpf: Fix txmsg_redir of test_txmsg_pull in test_sockmap selftests/bpf: Fix msg_verify_data in test_sockmap ==================== Link: https://patch.msgid.link/20241031221543.108853-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-03Merge tag 'mm-hotfixes-stable-2024-11-03-10-50' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "17 hotfixes. 9 are cc:stable. 13 are MM and 4 are non-MM. The usual collection of singletons - please see the changelogs" * tag 'mm-hotfixes-stable-2024-11-03-10-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm: multi-gen LRU: use {ptep,pmdp}_clear_young_notify() mm: multi-gen LRU: remove MM_LEAF_OLD and MM_NONLEAF_TOTAL stats mm, mmap: limit THP alignment of anonymous mappings to PMD-aligned sizes mm: shrinker: avoid memleak in alloc_shrinker_info .mailmap: update e-mail address for Eugen Hristev vmscan,migrate: fix page count imbalance on node stats when demoting pages mailmap: update Jarkko's email addresses mm: allow set/clear page_type again nilfs2: fix potential deadlock with newly created symlinks Squashfs: fix variable overflow in squashfs_readpage_block kasan: remove vmalloc_percpu test tools/mm: -Werror fixes in page-types/slabinfo mm, swap: avoid over reclaim of full clusters mm: fix PSWPIN counter for large folios swap-in mm: avoid VM_BUG_ON when try to map an anon large folio to zero page. mm/codetag: fix null pointer check logic for ref and tag mm/gup: stop leaking pinned pages in low memory conditions
2024-11-03net: netconsole: selftests: Add userdata validationBreno Leitao
Extend netcons_basic selftest to verify the userdata functionality by: 1. Creating a test key in the userdata configfs directory 2. Writing a known value to the key 3. Validating the key-value pair appears in the captured network output This ensures the userdata feature is properly tested during selftests. Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20241029090030.1793551-3-leitao@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-03net: netconsole: selftests: Change the IP subnetBreno Leitao
Use a less populated IP range to run the tests, as suggested by Petr in Link: https://lore.kernel.org/netdev/87ikvukv3s.fsf@nvidia.com/. Suggested-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20241029090030.1793551-2-leitao@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-11-03Merge tag 'usb-6.12-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB / Thunderbolt fixes from Greg KH: "Here are some small USB and Thunderbolt driver fixes for 6.12-rc6 that have been sitting in my tree this week. Included in here are the following: - thunderbolt driver fixes for reported issues - USB typec driver fixes - xhci driver fixes for reported problems - dwc2 driver revert for a broken change - usb phy driver fix - usbip tool fix All of these have been in linux-next this week with no reported issues" * tag 'usb-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: typec: tcpm: restrict SNK_WAIT_CAPABILITIES_TIMEOUT transitions to non self-powered devices usb: phy: Fix API devm_usb_put_phy() can not release the phy usb: typec: use cleanup facility for 'altmodes_node' usb: typec: fix unreleased fwnode_handle in typec_port_register_altmodes() usb: typec: qcom-pmic-typec: fix missing fwnode removal in error path usb: typec: qcom-pmic-typec: use fwnode_handle_put() to release fwnodes usb: acpi: fix boot hang due to early incorrect 'tunneled' USB3 device links Revert "usb: dwc2: Skip clock gating on Broadcom SoCs" xhci: Fix Link TRB DMA in command ring stopped completion event xhci: Use pm_runtime_get to prevent RPM on unsupported systems usbip: tools: Fix detach_port() invalid port error path thunderbolt: Honor TMU requirements in the domain when setting TMU mode thunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()
2024-11-01Merge tag 'linux_kselftest-fixes-6.12-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest fixes from Shuah Khan: - fix syntax error in frequency calculation arithmetic expression in intel_pstate run.sh - add missing cpupower dependency check intel_pstate run.sh - fix idmap_mount_tree_invalid test failure due to incorrect argument - fix watchdog-test run leaving the watchdog timer enabled causing system reboot. With this fix, the test disables the watchdog timer when it gets terminated with SIGTERM, SIGKILL, and SIGQUIT in addition to SIGINT * tag 'linux_kselftest-fixes-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/watchdog-test: Fix system accidentally reset after watchdog-test selftests/intel_pstate: check if cpupower is installed selftests/intel_pstate: fix operand expected error selftests/mount_setattr: fix idmap_mount_tree_invalid failed to run
2024-11-01Merge tag 'cxl-fixes-6.12-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull cxl fixes from Ira Weiny: "The bulk of these fixes center around an initialization order bug reported by Gregory Price and some additional fall out from the debugging effort. In summary, cxl_acpi and cxl_mem race and previously worked because of a bus_rescan_devices() while testing without modules built in. Unfortunately with modules built in the rescan would fail due to the cxl_port driver being registered late via the build order. Furthermore it was found bus_rescan_devices() did not guarantee a probe barrier which CXL was expecting. Additional fixes to cxl-test and decoder allocation came along as they were found in this debugging effort. The other fixes are pretty minor but one affects trace point data seen by user space. Summary: - Fix crashes when running with cxl-test code - Fix Trace DRAM Event Record field decodes - Fix module/built in initialization order errors - Fix use after free on decoder shutdowns - Fix out of order decoder allocations - Improve cxl-test to better reflect real world systems" * tag 'cxl-fixes-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: cxl/test: Improve init-order fidelity relative to real-world systems cxl/port: Prevent out-of-order decoder allocation cxl/port: Fix use-after-free, permit out-of-order decoder shutdown cxl/acpi: Ensure ports ready at cxl_acpi_probe() return cxl/port: Fix cxl_bus_rescan() vs bus_rescan_devices() cxl/port: Fix CXL port initialization order when the subsystem is built-in cxl/events: Fix Trace DRAM Event Record cxl/core: Return error when cxl_endpoint_gather_bandwidth() handles a non-PCI device
2024-11-01tracing/selftests: Add tracefs mount options testKalesh Singh
Add a selftest to check that the tracefs gid mount option is applied correctly. ./ftracetest test.d/00basic/mount_options.tc Use the new readme string "[gid=<gid>] as a requirement and also update test_ownership.tc requirements to use this. Cc: Eric Sandeen <sandeen@redhat.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Ali Zahraee <ahzahraee@gmail.com> Cc: Christian Brauner <brauner@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Link: https://lore.kernel.org/20241030171928.4168869-4-kaleshsingh@google.com Signed-off-by: Kalesh Singh <kaleshsingh@google.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2024-10-31selftests/net: Fix ./ns-XXXXXX not cleanupLi Zhijian
``` readonly STATS="$(mktemp -p /tmp ns-XXXXXX)" readonly BASE=`basename $STATS` ``` It could be a mistake to write to $BASE rather than $STATS, where $STATS is used to save the NSTAT_HISTORY and it will be cleaned up before exit. Although since we've been creating the wrong file this whole time and everything worked, it's fine to remove these 2 lines completely Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> Link: https://patch.msgid.link/20241030005943.400225-1-lizhijian@fujitsu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-31selftests: netdevsim: add fib_notifications to MakefileJakub Kicinski
Commit 19d36d2971e6 ("selftests: netdevsim: Add fib_notifications test") added the test but didn't include it in the Makefile. Reviewed-by: Joe Damato <jdamato@fastly.com> Link: https://patch.msgid.link/20241029192603.509295-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-31netlink: add NLA_POLICY_MAX_LEN macroAntonio Quartulli
Similarly to NLA_POLICY_MIN_LEN, NLA_POLICY_MAX_LEN defines a policy with a maximum length value. The netlink generator for YAML specs has been extended accordingly. Signed-off-by: Antonio Quartulli <antonio@openvpn.net> Reviewed-by: Donald Hunter <donald.hunter@gmail.com> Link: https://patch.msgid.link/20241029-b4-ovpn-v11-1-de4698c73a25@openvpn.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-31Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR (net-6.12-rc6). Conflicts: drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c cbe84e9ad5e2 ("wifi: iwlwifi: mvm: really send iwl_txpower_constraints_cmd") 188a1bf89432 ("wifi: mac80211: re-order assigning channel in activate links") https://lore.kernel.org/all/20241028123621.7bbb131b@canb.auug.org.au/ net/mac80211/cfg.c c4382d5ca1af ("wifi: mac80211: update the right link for tx power") 8dd0498983ee ("wifi: mac80211: Fix setting txpower with emulate_chanctx") drivers/net/ethernet/intel/ice/ice_ptp_hw.h 6e58c3310622 ("ice: fix crash on probe for DPLL enabled E810 LOM") e4291b64e118 ("ice: Align E810T GPIO to other products") ebb2693f8fbd ("ice: Read SDP section from NVM for pin definitions") ac532f4f4251 ("ice: Cleanup unused declarations") https://lore.kernel.org/all/20241030120524.1ee1af18@canb.auug.org.au/ No adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-31Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfLinus Torvalds
Pull bpf fixes from Daniel Borkmann: - Fix BPF verifier to force a checkpoint when the program's jump history becomes too long (Eduard Zingerman) - Add several fixes to the BPF bits iterator addressing issues like memory leaks and overflow problems (Hou Tao) - Fix an out-of-bounds write in trie_get_next_key (Byeonguk Jeong) - Fix BPF test infra's LIVE_FRAME frame update after a page has been recycled (Toke Høiland-Jørgensen) - Fix BPF verifier and undo the 40-bytes extra stack space for bpf_fastcall patterns due to various bugs (Eduard Zingerman) - Fix a BPF sockmap race condition which could trigger a NULL pointer dereference in sock_map_link_update_prog (Cong Wang) - Fix tcp_bpf_recvmsg_parser to retrieve seq_copied from tcp_sk under the socket lock (Jiayuan Chen) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: bpf, test_run: Fix LIVE_FRAME frame update after a page has been recycled selftests/bpf: Add three test cases for bits_iter bpf: Use __u64 to save the bits in bits iterator bpf: Check the validity of nr_words in bpf_iter_bits_new() bpf: Add bpf_mem_alloc_check_size() helper bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf: disallow 40-bytes extra stack for bpf_fastcall patterns selftests/bpf: Add test for trie_get_next_key() bpf: Fix out-of-bounds write in trie_get_next_key() selftests/bpf: Test with a very short loop bpf: Force checkpoint when jmp history is too long bpf: fix filed access without lock sock_map: fix a NULL pointer dereference in sock_map_link_update_prog()
2024-10-31Merge tag 'net-6.12-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from WiFi, bluetooth and netfilter. No known new regressions outstanding. Current release - regressions: - wifi: mt76: do not increase mcu skb refcount if retry is not supported Current release - new code bugs: - wifi: - rtw88: fix the RX aggregation in USB 3 mode - mac80211: fix memory corruption bug in struct ieee80211_chanctx Previous releases - regressions: - sched: - stop qdisc_tree_reduce_backlog on TC_H_ROOT - sch_api: fix xa_insert() error path in tcf_block_get_ext() - wifi: - revert "wifi: iwlwifi: remove retry loops in start" - cfg80211: clear wdev->cqm_config pointer on free - netfilter: fix potential crash in nf_send_reset6() - ip_tunnel: fix suspicious RCU usage warning in ip_tunnel_find() - bluetooth: fix null-ptr-deref in hci_read_supported_codecs - eth: mlxsw: add missing verification before pushing Tx header - eth: hns3: fixed hclge_fetch_pf_reg accesses bar space out of bounds issue Previous releases - always broken: - wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower - netfilter: sanitize offset and length before calling skb_checksum() - core: - fix crash when config small gso_max_size/gso_ipv4_max_size - skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension - mptcp: protect sched with rcu_read_lock - eth: ice: fix crash on probe for DPLL enabled E810 LOM - eth: macsec: fix use-after-free while sending the offloading packet - eth: stmmac: fix unbalanced DMA map/unmap for non-paged SKB data - eth: hns3: fix kernel crash when 1588 is sent on HIP08 devices - eth: mtk_wed: fix path of MT7988 WO firmware" * tag 'net-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (70 commits) net: hns3: fix kernel crash when 1588 is sent on HIP08 devices net: hns3: fixed hclge_fetch_pf_reg accesses bar space out of bounds issue net: hns3: initialize reset_timer before hclgevf_misc_irq_init() net: hns3: don't auto enable misc vector net: hns3: Resolved the issue that the debugfs query result is inconsistent. net: hns3: fix missing features due to dev->features configuration too early net: hns3: fixed reset failure issues caused by the incorrect reset type net: hns3: add sync command to sync io-pgtable net: hns3: default enable tx bounce buffer when smmu enabled netfilter: nft_payload: sanitize offset and length before calling skb_checksum() net: ethernet: mtk_wed: fix path of MT7988 WO firmware selftests: forwarding: Add IPv6 GRE remote change tests mlxsw: spectrum_ipip: Fix memory leak when changing remote IPv6 address mlxsw: pci: Sync Rx buffers for device mlxsw: pci: Sync Rx buffers for CPU mlxsw: spectrum_ptp: Add missing verification before pushing Tx header net: skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecs netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6() netfilter: Fix use-after-free in get_info() ...
2024-10-31Merge tag 'nf-24-10-31' of ↵Paolo Abeni
git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf Pablo Neira Ayuso says: ==================== The following patchset contains Netfilter fixes for net: 1) Remove unused parameters in conntrack_dump_flush.c used by selftests, from Liu Jing. 2) Fix possible UaF when removing xtables module via getsockopt() interface, from Dong Chenchen. 3) Fix potential crash in nf_send_reset6() reported by syzkaller. From Eric Dumazet 4) Validate offset and length before calling skb_checksum() in nft_payload, otherwise hitting BUG() is possible. netfilter pull request 24-10-31 * tag 'nf-24-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf: netfilter: nft_payload: sanitize offset and length before calling skb_checksum() netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6() netfilter: Fix use-after-free in get_info() selftests: netfilter: remove unused parameter ==================== Link: https://patch.msgid.link/ Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2024-10-30tools/mm: -Werror fixes in page-types/slabinfoWladislav Wiebe
Commit e6d2c436ff693 ("tools/mm: allow users to provide additional cflags/ldflags") passes now CFLAGS to Makefile. With this, build systems with default -Werror enabled found: slabinfo.c:1300:25: error: ignoring return value of 'chdir' declared with attribute 'warn_unused_result' [-Werror=unused-result]                          chdir("..");                          ^~~~~~~~~~~ page-types.c:397:35: error: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'uint64_t' {aka 'long long unsigned int'} [-Werror=format=]                          printf("%lu\t", mapcnt0);                                  ~~^     ~~~~~~~ .. Fix page-types by using PRIu64 for uint64_t prints and check in slabinfo for return code on chdir(".."). Link: https://lkml.kernel.org/r/c1ceb507-94bc-461c-934d-c19b77edd825@gmail.com Fixes: e6d2c436ff69 ("tools/mm: allow users to provide additional cflags/ldflags") Signed-off-by: Wladislav Wiebe <wladislav.kw@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Herton R. Krzesinski <herton@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-10-30selftests: forwarding: Add IPv6 GRE remote change testsIdo Schimmel
Test that after changing the remote address of an ip6gre net device traffic is forwarded as expected. Test with both flat and hierarchical topologies and with and without an input / output keys. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Link: https://patch.msgid.link/02b05246d2cdada0cf2fccffc0faa8a424d0f51b.1729866134.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-30tests: hsr: Increase timeout to 50 secondsYunshui Jiang
The HSR test, hsr_ping.sh, actually needs 7 min to run. Around 375s to be exact, and even more on a debug kernel or kernel with other network security limits. The timeout setting for the kselftest is currently 45 seconds, which is way too short to integrate hsr tests to run_kselftest infrastructure. However, timeout of hundreds of seconds is quite a long time, especially in a CI/CD environment. It seems that we need accelerate the test and balance with timeout setting. The most time-consuming func is do_ping_long, where ping command sends 10 packages to the given address. The default interval between two ping packages is 1s according to the ping Mannual. There isn't any operation between pings thus we could pass -i 0.1 to ping to make it 10 times faster. While even with this short interval, the test still need about 46.4 seconds to finish because of the two HSR interfaces, each of which is tested by calling do_ping func 12 times and do_ping_long func 19 times and sleep for 3s. So, an explicit setting is also needed to slightly increase the timeout. And to leave us some slack, use 50 as default timeout. Signed-off-by: Yunshui Jiang <jiangyunshui@kylinos.cn> Link: https://patch.msgid.link/20241028082757.2945232-1-jiangyunshui@kylinos.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-30Merge tag 'perf-tools-fixes-for-v6.12-2-2024-10-30' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools fixes from Arnaldo Carvalho de Melo: - Update more header copies with the kernel sources, including const.h, msr-index.h, arm64's cputype.h, kvm's, bits.h and unaligned.h - The return from 'write' isn't a pid, fix cut'n'paste error in 'perf trace' - Fix up the python binding build on architectures without HAVE_KVM_STAT_SUPPORT - Add some more bounds checks to augmented_raw_syscalls.bpf.c (used to collect syscall pointer arguments in 'perf trace') to make the resulting bytecode to pass the kernel BPF verifier, allowing us to go back accepting clang 12.0.1 as the minimum version required for compiling BPF sources - Add __NR_capget for x86 to fix a regression on running perf + intel PT (hw tracing) as non-root setting up the capabilities as described in https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html - Fix missing syscalltbl in non-explicitly listed architectures, noticed on ARM 32-bit, that still needs a .tbl generator for the syscall id<->name tables, should be added for v6.13 - Handle 'perf test' failure when handling broken DWARF for ASM files * tag 'perf-tools-fixes-for-v6.12-2-2024-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: perf cap: Add __NR_capget to arch/x86 unistd tools headers: Update the linux/unaligned.h copy with the kernel sources tools headers arm64: Sync arm64's cputype.h with the kernel sources tools headers: Synchronize {uapi/}linux/bits.h with the kernel sources tools arch x86: Sync the msr-index.h copy with the kernel sources perf python: Fix up the build on architectures without HAVE_KVM_STAT_SUPPORT perf test: Handle perftool-testsuite_probe failure due to broken DWARF tools headers UAPI: Sync kvm headers with the kernel sources perf trace: Fix non-listed archs in the syscalltbl routines perf build: Change the clang check back to 12.0.1 perf trace augmented_raw_syscalls: Add more checks to pass the verifier perf trace augmented_raw_syscalls: Add extra array index bounds checking to satisfy some BPF verifiers perf trace: The return from 'write' isn't a pid tools headers UAPI: Sync linux/const.h with the kernel headers
2024-10-30selftests/bpf: Add three test cases for bits_iterHou Tao
Add more test cases for bits iterator: (1) huge word test Verify the multiplication overflow of nr_bits in bits_iter. Without the overflow check, when nr_words is 67108865, nr_bits becomes 64, causing bpf_probe_read_kernel_common() to corrupt the stack. (2) max word test Verify correct handling of maximum nr_words value (511). (3) bad word test Verify early termination of bits iteration when bits iterator initialization fails. Also rename bits_nomem to bits_too_big to better reflect its purpose. Signed-off-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/r/20241030100516.3633640-6-houtao@huaweicloud.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-10-30selftests/bpf: Add a selftest for bpf_csum_diff()Puranjay Mohan
Add a selftest for the bpf_csum_diff() helper. This selftests runs the helper in all three configurations(push, pull, and diff) and verifies its output. The correct results have been computed by hand and by the helper's older implementation. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20241026125339.26459-5-puranjay@kernel.org
2024-10-30selftests/bpf: Don't mask result of bpf_csum_diff() in test_verifierPuranjay Mohan
The bpf_csum_diff() helper has been fixed to return a 16-bit value for all archs, so now we don't need to mask the result. This commit is basically reverting the below: commit 6185266c5a85 ("selftests/bpf: Mask bpf_csum_diff() return value to 16 bits in test_verifier") Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20241026125339.26459-4-puranjay@kernel.org
2024-10-30selftests: netfilter: remove unused parameterLiu Jing
err is never used, remove it. Signed-off-by: Liu Jing <liujing@cmss.chinamobile.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2024-10-29bpf: disallow 40-bytes extra stack for bpf_fastcall patternsEduard Zingerman
Hou Tao reported an issue with bpf_fastcall patterns allowing extra stack space above MAX_BPF_STACK limit. This extra stack allowance is not integrated properly with the following verifier parts: - backtracking logic still assumes that stack can't exceed MAX_BPF_STACK; - bpf_verifier_env->scratched_stack_slots assumes only 64 slots are available. Here is an example of an issue with precision tracking (note stack slot -8 tracked as precise instead of -520): 0: (b7) r1 = 42 ; R1_w=42 1: (b7) r2 = 42 ; R2_w=42 2: (7b) *(u64 *)(r10 -512) = r1 ; R1_w=42 R10=fp0 fp-512_w=42 3: (7b) *(u64 *)(r10 -520) = r2 ; R2_w=42 R10=fp0 fp-520_w=42 4: (85) call bpf_get_smp_processor_id#8 ; R0_w=scalar(...) 5: (79) r2 = *(u64 *)(r10 -520) ; R2_w=42 R10=fp0 fp-520_w=42 6: (79) r1 = *(u64 *)(r10 -512) ; R1_w=42 R10=fp0 fp-512_w=42 7: (bf) r3 = r10 ; R3_w=fp0 R10=fp0 8: (0f) r3 += r2 mark_precise: frame0: last_idx 8 first_idx 0 subseq_idx -1 mark_precise: frame0: regs=r2 stack= before 7: (bf) r3 = r10 mark_precise: frame0: regs=r2 stack= before 6: (79) r1 = *(u64 *)(r10 -512) mark_precise: frame0: regs=r2 stack= before 5: (79) r2 = *(u64 *)(r10 -520) mark_precise: frame0: regs= stack=-8 before 4: (85) call bpf_get_smp_processor_id#8 mark_precise: frame0: regs= stack=-8 before 3: (7b) *(u64 *)(r10 -520) = r2 mark_precise: frame0: regs=r2 stack= before 2: (7b) *(u64 *)(r10 -512) = r1 mark_precise: frame0: regs=r2 stack= before 1: (b7) r2 = 42 9: R2_w=42 R3_w=fp42 9: (95) exit This patch disables the additional allowance for the moment. Also, two test cases are removed: - bpf_fastcall_max_stack_ok: it fails w/o additional stack allowance; - bpf_fastcall_max_stack_fail: this test is no longer necessary, stack size follows regular rules, pattern invalidation is checked by other test cases. Reported-by: Hou Tao <houtao@huaweicloud.com> Closes: https://lore.kernel.org/bpf/20241023022752.172005-1-houtao@huaweicloud.com/ Fixes: 5b5f51bff1b6 ("bpf: no_caller_saved_registers attribute for helper calls") Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Acked-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/r/20241029193911.1575719-1-eddyz87@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-10-29Merge tag 'sched_ext-for-6.12-rc5-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext Pull sched_ext fixes from Tejun Heo: - Instances of scx_ops_bypass() could race each other leading to misbehavior. Fix by protecting the operation with a spinlock. - selftest and userspace header fixes * tag 'sched_ext-for-6.12-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: sched_ext: Fix enq_last_no_enq_fails selftest sched_ext: Make cast_mask() inline scx: Fix raciness in scx_ops_bypass() scx: Fix exit selftest to use custom DSQ sched_ext: Fix function pointer type mismatches in BPF selftests selftests/sched_ext: add order-only dependency of runner.o on BPFOBJ
2024-10-29selftests/bpf: Add test for trie_get_next_key()Byeonguk Jeong
Add a test for out-of-bounds write in trie_get_next_key() when a full path from root to leaf exists and bpf_map_get_next_key() is called with the leaf node. It may crashes the kernel on failure, so please run in a VM. Signed-off-by: Byeonguk Jeong <jungbu2855@gmail.com> Acked-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/r/Zxx4ep78tsbeWPVM@localhost.localdomain Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2024-10-29selftests/bpf: remove xdp_synproxy IP_DF checkVincent Li
In real world production websites, the IP_DF flag is not always set for each packet from these websites. the IP_DF flag check breaks Internet connection to these websites for home based firewall like BPFire when XDP synproxy program is attached to firewall Internet facing side interface. see [0] [0] https://github.com/vincentmli/BPFire/issues/59 Signed-off-by: Vincent Li <vincent.mc.li@gmail.com> Link: https://lore.kernel.org/r/20241025031952.1351150-1-vincent.mc.li@gmail.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2024-10-29selftests: tc-testing: Fix typo errorKaran Sanghavi
Correct the typo errors in json files - "diffferent" is corrected to "different". - "muliple" and "miltiple" is corrected to "multiple". Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Karan Sanghavi <karansanghvi98@gmail.com> Link: https://patch.msgid.link/20241022-multiple_spell_error-v2-1-7e5036506fe5@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-29selftests/bpf: Test with a very short loopEduard Zingerman
The test added is a simplified reproducer from syzbot report [1]. If verifier does not insert checkpoint somewhere inside the loop, verification of the program would take a very long time. This would happen because mark_chain_precision() for register r7 would constantly trace jump history of the loop back, processing many iterations for each mark_chain_precision() call. [1] https://lore.kernel.org/bpf/670429f6.050a0220.49194.0517.GAE@google.com/ Signed-off-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20241029172641.1042523-2-eddyz87@gmail.com