Ilya Leoshkevich b2e37a7114 bpf: Fix subreg optimization for BPF_FETCH ...

All 32-bit variants of BPF_FETCH (add, and, or, xor, xchg, cmpxchg)
define a 32-bit subreg and thus have zext_dst set. Their encoding,
however, uses dst_reg field as a base register, which causes
opt_subreg_zext_lo32_rnd_hi32() to zero-extend said base register
instead of the one the insn really defines (r0 or src_reg).

Fix by properly choosing a register being defined, similar to how
check_atomic() already does that.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210210204502.83429-1-iii@linux.ibm.com

2021-02-11 22:03:19 -08:00

..

preload

bpf: Remove unnecessary <argp.h> include from preload/iterators

2021-01-08 13:39:24 -08:00

arraymap.c

bpf: Eliminate rlimit-based memory accounting for arraymap maps

2020-12-02 18:32:46 -08:00

bpf_inode_storage.c

bpf: Fix typo in bpf_inode_storage.c

2021-01-12 16:07:57 +01:00

bpf_iter.c

bpf: Permit cond_resched for some iterators

2020-10-28 14:54:31 -07:00

bpf_local_storage.c

bpf: Eliminate rlimit-based memory accounting for bpf local storage maps

2020-12-02 18:32:47 -08:00

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: Add a BPF helper for getting the IMA hash of an inode

2020-11-26 00:04:04 +01:00

bpf_struct_ops_types.h

bpf: tcp: Support tcp_congestion_ops in bpf

2020-01-09 08:46:18 -08:00

bpf_struct_ops.c

bpf: Eliminate rlimit-based memory accounting for bpf_struct_ops maps

2020-12-02 18:32:46 -08:00

bpf_task_storage.c

bpf: Local storage helpers should check nullness of owner ptr passed

2021-01-12 16:07:56 +01:00

btf.c

bpf: Permit size-0 datasec

2021-01-20 14:14:09 -08:00

cgroup.c

bpf: Allow rewriting to ports under ip_unprivileged_port_start

2021-01-27 18:18:15 -08:00

core.c

bpf: Clear per_cpu pointers during bpf_prog_realloc

2021-02-11 19:35:00 -08:00

cpumap.c

net, xdp: Introduce __xdp_build_skb_from_frame utility routine

2021-01-20 14:10:35 -08:00

devmap.c

bpf: Eliminate rlimit-based memory accounting for devmap maps

2020-12-02 18:32:46 -08:00

disasm.c

bpf: Change 'BPF_ADD' to 'BPF_AND' in print_bpf_insn()

2021-01-27 22:23:46 +01:00

disasm.h

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295

2019-06-05 17:36:38 +02:00

dispatcher.c

bpf: Remove bpf_image tree

2020-03-13 12:49:52 -07:00

hashtab.c

bpf: Allows per-cpu maps and map-in-map in sleepable programs

2021-02-11 16:19:26 +01:00

helpers.c

bpf: Simplify cases in bpf_base_func_proto

2021-01-29 02:20:28 +01:00

inode.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2020-09-22 16:45:34 -07:00

local_storage.c

bpf: Eliminate rlimit-based memory accounting for cgroup storage maps

2020-12-02 18:32:46 -08:00

lpm_trie.c

bpf: Eliminate rlimit-based memory accounting for lpm_trie maps

2020-12-02 18:32:46 -08:00

Makefile

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2020-11-14 09:13:41 -08:00

map_in_map.c

bpf: Relax max_entries check for most of the inner map types

2020-08-28 15:41:30 +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: Implement link_query callbacks in map element iterators

2020-08-21 14:01:39 -07:00

net_namespace.c

bpf: Add support for forced LINK_DETACH command

2020-08-01 20:38:28 -07:00

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: Eliminate rlimit-based memory accounting for reuseport_array maps

2020-12-02 18:32:47 -08:00

ringbuf.c

bpf: Eliminate rlimit-based memory accounting for bpf ringbuffer

2020-12-02 18:32:47 -08:00

stackmap.c

bpf: Add size arg to build_id_parse function

2021-01-14 19:29:58 -08:00

syscall.c

bpf: Count the number of times recursion was prevented

2021-02-11 16:19:20 +01:00

sysfs_btf.c

bpf: Load and verify kernel module BTFs

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

task_iter.c

bpf: Fix a task_iter bug caused by a merge conflict resolution

2021-01-03 01:41:32 +01:00

tnum.c

bpf: Verifier, do explicit ALU32 bounds tracking

2020-03-30 14:59:53 -07:00

trampoline.c

bpf: Count the number of times recursion was prevented

2021-02-11 16:19:20 +01:00

verifier.c

bpf: Fix subreg optimization for BPF_FETCH

2021-02-11 22:03:19 -08:00