Toke Høiland-Jørgensen f562e4c4aa cpumap: Zero-initialise xdp_rxq_info struct before running XDP program ...

[ Upstream commit 2487007aa3b9fafbd2cb14068f49791ce1d7ede5 ]

When running an XDP program that is attached to a cpumap entry, we don't
initialise the xdp_rxq_info data structure being used in the xdp_buff
that backs the XDP program invocation. Tobias noticed that this leads to
random values being returned as the xdp_md->rx_queue_index value for XDP
programs running in a cpumap.

This means we're basically returning the contents of the uninitialised
memory, which is bad. Fix this by zero-initialising the rxq data
structure before running the XDP program.

Fixes: 9216477449 ("bpf: cpumap: Add the possibility to attach an eBPF program to cpumap")
Reported-by: Tobias Böhm <tobias@aibor.de>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20240305213132.11955-1-toke@redhat.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2024-03-15 10:48:18 -04:00

..

preload

bpf: make preloaded map iterators to display map elements count

2023-07-06 12:42:25 -07:00

arraymap.c

bpf: Set need_defer as false when clearing fd array during map free

2024-02-05 20:14:20 +00:00

bloom_filter.c

bpf: Centralize permissions checks for all BPF map types

2023-06-19 14:04:04 +02:00

bpf_cgrp_storage.c

bpf: Teach verifier that certain helpers accept NULL pointer.

2023-04-04 16:57:16 -07:00

bpf_inode_storage.c

Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2023-04-26 16:07:23 -07:00

bpf_iter.c

bpf: implement numbers iterator

2023-03-08 16:19:51 -08:00

bpf_local_storage.c

bpf: bpf_sk_storage: Fix the missing uncharge in sk_omem_alloc

2023-09-06 11:08:14 +02:00

bpf_lru_list.c

bpf: Address KCSAN report on bpf_lru_list

2023-05-12 12:01:03 -07:00

bpf_lru_list.h

bpf: lru: Remove unused declaration bpf_lru_promote()

2023-08-08 17:21:42 -07:00

bpf_lsm.c

bpf: Fix the kernel crash caused by bpf_setsockopt().

2023-01-26 23:26:40 -08:00

bpf_struct_ops_types.h

bpf: Add dummy BPF STRUCT_OPS for test purpose

2021-11-01 14:10:00 -07:00

bpf_struct_ops.c

bpf: Support default .validate() and .update() behavior for struct_ops links

2023-08-14 22:23:39 -07:00

bpf_task_storage.c

bpf: Teach verifier that certain helpers accept NULL pointer.

2023-04-04 16:57:16 -07:00

btf.c

bpf: Add bpf_sock_addr_set_sun_path() to allow writing unix sockaddr from bpf

2024-01-31 16:19:04 -08:00

cgroup_iter.c

cgroup: bpf: use cgroup_lock()/cgroup_unlock() wrappers

2023-03-17 12:07:13 -10:00

cgroup.c

bpf: Propagate modified uaddrlen from cgroup sockaddr programs

2024-01-31 16:19:04 -08:00

core.c

bpf: Fix a verifier bug due to incorrect branch offset comparison with cpu=v4

2023-12-13 18:45:04 +01:00

cpumap.c

cpumap: Zero-initialise xdp_rxq_info struct before running XDP program

2024-03-15 10:48:18 -04:00

cpumask.c

bpf: Convert bpf_cpumask to bpf_mem_cache_free_rcu.

2023-07-12 23:45:23 +02:00

devmap.c

bpf, devmap: Remove unused dtab field from bpf_dtab_netdev

2023-07-31 18:26:08 -07:00

disasm.c

bpf: change bpf_alu_sign_string and bpf_movsx_string to static

2023-08-04 16:15:50 -07:00

disasm.h

bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause

2021-09-02 14:49:23 +02:00

dispatcher.c

bpf: Synchronize dispatcher update with bpf_dispatcher_xdp_func

2022-12-14 12:02:14 -08:00

hashtab.c

bpf: Add map and need_defer parameters to .map_fd_put_ptr()

2024-01-25 15:35:22 -08:00

helpers.c

bpf: Fix racing between bpf_timer_cancel_and_free and bpf_timer_cancel

2024-03-01 13:35:07 +01:00

inode.c

bpf: convert to ctime accessor functions

2023-07-24 10:30:07 +02:00

Kconfig

bpf: Add fd-based tcx multi-prog infra with link support

2023-07-19 10:07:27 -07:00

link_iter.c

bpf: Add bpf_link iterator

2022-05-10 11:20:45 -07:00

local_storage.c

Merge tag 'cgroup-for-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2023-04-29 10:05:22 -07:00

log.c

bpf: drop unnecessary user-triggerable WARN_ONCE in verifierl log

2023-05-16 22:34:50 -07:00

lpm_trie.c

bpf, lpm: Fix check prefixlen before walking trie

2024-01-25 15:35:19 -08:00

Makefile

bpf: Add fd-based tcx multi-prog infra with link support

2023-07-19 10:07:27 -07:00

map_in_map.c

bpf: Defer the free of inner map when necessary

2024-01-25 15:35:22 -08:00

map_in_map.h

bpf: Add map and need_defer parameters to .map_fd_put_ptr()

2024-01-25 15:35:22 -08:00

map_iter.c

bpf: allow any program to use the bpf_map_sum_elem_count kfunc

2023-07-19 09:48:53 -07:00

memalloc.c

bpf: Use c->unit_size to select target cache during free

2024-01-25 15:35:28 -08:00

mmap_unlock_work.h

bpf: Introduce helper bpf_find_vma

2021-11-07 11:54:51 -08:00

mprog.c

bpf: Handle bpf_mprog_query with NULL entry

2023-10-06 17:11:20 -07:00

net_namespace.c

net: Add includes masked by netdevice.h including uapi/bpf.h

2021-12-29 20:03:05 -08:00

offload.c

bpf: Avoid dummy bpf_offload_netdev in __bpf_prog_dev_bound_init

2023-09-11 22:06:06 -07:00

percpu_freelist.c

bpf: Initialize same number of free nodes for each pcpu_freelist

2022-11-11 12:05:14 -08:00

percpu_freelist.h

bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI

2020-10-06 00:04:11 +02:00

prog_iter.c

bpf: Refactor bpf_iter_reg to have separate seq_info member

2020-07-25 20:16:32 -07:00

queue_stack_maps.c

bpf: Avoid deadlock when using queue and stack maps from NMI

2023-09-11 19:04:49 -07:00

reuseport_array.c

bpf: Centralize permissions checks for all BPF map types

2023-06-19 14:04:04 +02:00

ringbuf.c

bpf: Remove unnecessary ring buffer size check

2023-07-05 14:09:45 +02:00

stackmap.c

bpf: Add crosstask check to __bpf_get_stack

2024-01-25 15:35:19 -08:00

syscall.c

bpf: Set uattr->batch.count as zero before batched update or deletion

2024-02-05 20:14:21 +00:00

sysfs_btf.c

bpf: Load and verify kernel module BTFs

2020-11-10 15:25:53 -08:00

task_iter.c

bpf: keep a reference to the mm, in case the task is dead.

2022-12-28 14:11:48 -08:00

tcx.c

bpf: Handle bpf_mprog_query with NULL entry

2023-10-06 17:11:20 -07:00

tnum.c

bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul

2021-06-01 13:34:15 +02:00

trampoline.c

bpf, x64: Fix tailcall infinite loop

2023-11-20 11:58:55 +01:00

verifier.c

bpf: check bpf_func_state->callback_depth when pruning states

2024-03-15 10:48:17 -04:00