Daniel Borkmann a703619127 bpf: No need to simulate speculative domain for immediates ... In 801c6058d1 ("bpf: Fix leakage of uninitialized bpf stack under speculation") we replaced masking logic with direct loads of immediates if the register is a known constant. Given in this case we do not apply any masking, there is also no reason for the operation to be truncated under the speculative domain. Therefore, there is also zero reason for the verifier to branch-off and simulate this case, it only needs to do it for unknown but bounded scalars. As a side-effect, this also enables few test cases that were previously rejected due to simulation under zero truncation. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Piotr Krysiuk <piotras@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org>		2021-05-25 22:08:53 +02:00
..
preload	bpf: Fix umd memory leak in copy_process()	2021-03-19 22:23:19 +01:00
Kconfig	bpf: Fix BPF_JIT kconfig symbol dependency	2021-05-20 23:48:37 +02:00
Makefile	bpf: Enable task local storage for tracing programs	2021-02-26 11:51:47 -08:00
arraymap.c	bpf: Add batched ops support for percpu array	2021-04-28 01:17:45 +02:00
bpf_inode_storage.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-03-25 15:31:22 -07:00
bpf_iter.c	bpf: Add bpf_for_each_map_elem() helper	2021-02-26 13:23:52 -08:00
bpf_local_storage.c	bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete]	2021-02-26 11:51:48 -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: Fix BPF_LSM kconfig symbol dependency	2021-05-25 21:16:23 +02:00
bpf_struct_ops.c	bpf: Fix fexit trampoline.	2021-03-18 00:22:51 +01:00
bpf_struct_ops_types.h	bpf: tcp: Support tcp_congestion_ops in bpf	2020-01-09 08:46:18 -08:00
bpf_task_storage.c	bpf: Make symbol 'bpf_task_storage_busy' static	2021-03-16 12:24:20 -07:00
btf.c	bpf: Forbid trampoline attach for functions with variable arguments	2021-05-07 01:28:28 +02:00
cgroup.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-02-16 13:14:06 -08:00
core.c	bpf: Remove unused parameter from ___bpf_prog_run	2021-04-03 01:38:52 +02:00
cpumap.c	bpf, cpumap: Bulk skb using netif_receive_skb_list	2021-04-27 17:13:49 +02:00
devmap.c	bpf, devmap: Move drop error path to devmap for XDP_REDIRECT	2021-03-18 16:38:51 +01:00
disasm.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2021-04-09 20:48:35 -07:00
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	kernel/bpf/: Fix misspellings using codespell tool	2021-03-16 12:22:20 -07:00
helpers.c	bpf: Avoid using ARRAY_SIZE on an uninitialized pointer	2021-05-20 23:48:38 +02:00
inode.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2021-04-25 18:02:32 -07:00
local_storage.c	bpf: Fix NULL pointer dereference in bpf_get_local_storage() helper	2021-03-25 18:31:36 -07:00
lpm_trie.c	bpf: Add support for batched ops in LPM trie maps	2021-03-25 18:51:08 -07:00
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: Prevent writable memory-mapping of read-only ringbuf pages	2021-05-11 13:31:10 +02:00
stackmap.c	bpf: Refcount task stack in bpf_get_task_stack	2021-04-01 13:58:07 -07:00
syscall.c	bpf: Add kconfig knob for disabling unpriv bpf by default	2021-05-11 13:56:16 -07:00
sysfs_btf.c	bpf: Load and verify kernel module BTFs	2020-11-10 15:25:53 -08:00
task_iter.c	bpf: Introduce task_vma bpf_iter	2021-02-12 12:56:53 -08:00
tnum.c	bpf: Verifier, do explicit ALU32 bounds tracking	2020-03-30 14:59:53 -07:00
trampoline.c	bpf: Allow trampoline re-attach for tracing and lsm programs	2021-04-25 21:09:01 -07:00
verifier.c	bpf: No need to simulate speculative domain for immediates	2021-05-25 22:08:53 +02:00