linux/kernel/bpf
KP Singh dcf456c9a0 bpf: Fix usage of trace RCU in local storage.
bpf_{sk,task,inode}_storage_free() do not need to use
call_rcu_tasks_trace as no BPF program should be accessing the owner
as it's being destroyed. The only other reader at this point is
bpf_local_storage_map_free() which uses normal RCU.

The only path that needs trace RCU are:

* bpf_local_storage_{delete,update} helpers
* map_{delete,update}_elem() syscalls

Fixes: 0fe4b381a5 ("bpf: Allow bpf_local_storage to be used by sleepable programs")
Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20220418155158.2865678-1-kpsingh@kernel.org
2022-04-19 17:55:45 -07:00
..
preload bpf: Remove redundant slash 2022-03-07 22:19:32 -08:00
arraymap.c bpf: generalise tail call map compatibility check 2022-01-21 14:14:03 -08:00
bloom_filter.c bpf: Add missing map_get_next_key method to bloom filter map. 2021-12-29 09:38:31 -08:00
bpf_inode_storage.c bpf: Fix usage of trace RCU in local storage. 2022-04-19 17:55:45 -07:00
bpf_iter.c bpf: Remove redundant assignment to meta.seq in __task_seq_show() 2022-04-11 21:14:34 +02:00
bpf_local_storage.c bpf: Fix usage of trace RCU in local storage. 2022-04-19 17:55:45 -07:00
bpf_lru_list.c bpf_lru_list: Read double-checked variable once without lock 2021-02-10 15:54:26 -08:00
bpf_lru_list.h bpf: Fix a typo "inacitve" -> "inactive" 2020-04-06 21:54:10 +02:00
bpf_lsm.c bpf-lsm: Make bpf_lsm_kernel_read_file() as sleepable 2022-03-10 18:57:55 -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: Remove unnecessary type castings 2022-04-14 01:02:24 +02:00
bpf_task_storage.c bpf: Fix usage of trace RCU in local storage. 2022-04-19 17:55:45 -07:00
btf.c bpf: Ensure type tags precede modifiers in BTF 2022-04-19 14:02:49 -07:00
cgroup.c bpf: Move rcu lock management out of BPF_PROG_RUN routines 2022-04-19 09:45:47 -07:00
core.c bpf: Fix bpf_prog_pack when PMU_SIZE is not defined 2022-03-21 13:53:45 -07:00
cpumap.c bpf: generalise tail call map compatibility check 2022-01-21 14:14:03 -08:00
devmap.c bpf: generalise tail call map compatibility check 2022-01-21 14:14:03 -08:00
disasm.c bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause 2021-09-02 14:49:23 +02:00
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: Remove bpf_image tree 2020-03-13 12:49:52 -07:00
hashtab.c bpf: Remove unnecessary type castings 2022-04-14 01:02:24 +02:00
helpers.c bpf: Replace strncpy() with strscpy() 2022-03-07 22:04:33 -08:00
inode.c bpf: Convert bpf_preload.ko to use light skeleton. 2022-02-10 23:31:51 +01:00
Kconfig bpf: Add "live packet" mode for XDP in BPF_PROG_RUN 2022-03-09 14:19:22 -08:00
local_storage.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
lpm_trie.c bpf: Fix typo in a comment in bpf lpm_trie. 2021-12-30 18:42:34 -08:00
Makefile bpf: Prepare relo_core.c for kernel duty. 2021-12-02 11:18:34 -08:00
map_in_map.c bpf: Remember BTF of inner maps. 2021-07-15 22:31:10 +02:00
map_in_map.h bpf: Add map_meta_equal map ops 2020-08-28 15:41:30 +02:00
map_iter.c bpf: Introduce MEM_RDONLY flag 2021-12-18 13:27:41 -08:00
mmap_unlock_work.h bpf: Introduce helper bpf_find_vma 2021-11-07 11:54:51 -08:00
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, offload: Replace bitwise AND by logical AND in bpf_prog_offload_info_fill 2020-02-17 16:53:49 +01:00
percpu_freelist.c bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI 2020-10-06 00:04:11 +02:00
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: Eliminate rlimit-based memory accounting for queue_stack_maps maps 2020-12-02 18:32:46 -08:00
reuseport_array.c bpf: Cleanup comments 2022-02-23 15:17:51 -08:00
ringbuf.c bpf: Use VM_MAP instead of VM_ALLOC for ringbuf 2022-02-02 23:15:24 -08:00
stackmap.c bpf: Fix excessive memory allocation in stack_map_alloc() 2022-04-09 00:28:21 +02:00
syscall.c bpf: Move BPF sysctls from kernel/sysctl.c to BPF core 2022-04-13 21:36:56 +02:00
sysfs_btf.c bpf: Load and verify kernel module BTFs 2020-11-10 15:25:53 -08:00
task_iter.c bpf: Remove redundant assignment to meta.seq in __task_seq_show() 2022-04-11 21:14:34 +02:00
tnum.c bpf, tnums: Provably sound, faster, and more precise algorithm for tnum_mul 2021-06-01 13:34:15 +02:00
trampoline.c Add support for Intel CET-IBT, available since Tigerlake (11th gen), which is a 2022-03-27 10:17:23 -07:00
verifier.c bpf: Reject writes for PTR_TO_MAP_KEY in check_helper_mem_access 2022-04-06 10:32:12 -07:00