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Stanislav Fomichev e254e034da vrf: Drop existing dst reference in vrf_ip6_input_dst 
[ Upstream commit f388f807ec ]

Commit ff3fbcdd47 ("selftests: tc: Add generic erspan_opts matching support
for tc-flower") started triggering the following kmemleak warning:

unreferenced object 0xffff888015fb0e00 (size 512):
  comm "softirq", pid 0, jiffies 4294679065
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 40 d2 85 9e ff ff ff ff  ........@.......
    41 69 59 9d ff ff ff ff 00 00 00 00 00 00 00 00  AiY.............
  backtrace (crc 30b71e8b):
    __kmalloc_noprof+0x359/0x460
    metadata_dst_alloc+0x28/0x490
    erspan_rcv+0x4f1/0x1160 [ip_gre]
    gre_rcv+0x217/0x240 [ip_gre]
    gre_rcv+0x1b8/0x400 [gre]
    ip_protocol_deliver_rcu+0x31d/0x3a0
    ip_local_deliver_finish+0x37d/0x620
    ip_local_deliver+0x174/0x460
    ip_rcv+0x52b/0x6b0
    __netif_receive_skb_one_core+0x149/0x1a0
    process_backlog+0x3c8/0x1390
    __napi_poll.constprop.0+0xa1/0x390
    net_rx_action+0x59b/0xe00
    handle_softirqs+0x22b/0x630
    do_softirq+0xb1/0xf0
    __local_bh_enable_ip+0x115/0x150

vrf_ip6_input_dst unconditionally sets skb dst entry, add a call to
skb_dst_drop to drop any existing entry.

Cc: David Ahern <dsahern@kernel.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Fixes: 9ff7438460 ("net: vrf: Handle ipv6 multicast and link-local addresses")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250725160043.350725-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-08-15 12:05:00 +02:00
arch um: rtc: Avoid shadowing err in uml_rtc_start() 2025-08-15 12:04:58 +02:00
block scsi: sd_zbc: block: Respect bio vector limits for REPORT ZONES buffer 2025-05-22 14:10:06 +02:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2025-04-25 10:44:04 +02:00
crypto crypto: xts - Only add ecb if it is not already there 2025-06-27 11:07:06 +01:00
Documentation x86/bugs: Add a Transient Scheduler Attacks mitigation 2025-07-10 15:59:54 +02:00
drivers vrf: Drop existing dst reference in vrf_ip6_input_dst 2025-08-15 12:05:00 +02:00
fs Revert "fs/ntfs3: Replace inode_trylock with inode_lock" 2025-08-15 12:04:52 +02:00
include net_sched: act_ctinfo: use atomic64_t for three counters 2025-08-15 12:04:58 +02:00
init sched/isolation: Make CONFIG_CPU_ISOLATION depend on CONFIG_SMP 2025-05-02 07:47:04 +02:00
io_uring io_uring/poll: fix POLLERR handling 2025-07-24 08:51:48 +02:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:07:30 +01:00
kernel kcsan: test: Initialize dummy variable 2025-08-15 12:04:59 +02:00
lib maple_tree: fix mt_destroy_walk() on root leaf node 2025-07-17 18:32:09 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm: khugepaged: fix call hpage_collapse_scan_file() for anonymous vma 2025-08-15 12:04:51 +02:00
net netfilter: xt_nfacct: don't assume acct name is null-terminated 2025-08-15 12:05:00 +02:00
rust rust: module: place cleanup_module() in .exit.text section 2025-07-06 10:57:54 +02:00
samples samples: mei: Fix building on musl libc 2025-08-15 12:04:55 +02:00
scripts kbuild: Add KBUILD_CPPFLAGS to as-option invocation 2025-06-27 11:07:24 +01:00
security selinux: fix selinux_xfrm_alloc_user() to set correct ctx_len 2025-06-27 11:07:37 +01:00
sound ASoC: ops: dynamically allocate struct snd_ctl_elem_value 2025-08-15 12:04:53 +02:00
tools selftests: rtnetlink.sh: remove esp4_offload after test 2025-08-15 12:05:00 +02:00
usr kbuild: hdrcheck: fix cross build with clang 2025-06-27 11:07:25 +01:00
virt KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() 2024-06-27 13:46:21 +02:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-01 12:42:46 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore Remove *.orig pattern from .gitignore 2024-10-17 15:21:15 +02:00
.mailmap 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove Michal Marek from Kbuild maintainers 2022-11-16 14:53:00 +09:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS sign-file,extract-cert: move common SSL helper functions to a header 2025-04-25 10:44:04 +02:00
Makefile Linux 6.1.147 2025-07-24 08:51:55 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.