Kernel/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-20 04:19:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
linux/kernel/bpf
History
Alexei Starovoitov f56407fa6e bpf: Remove bpf_lsm_file_mprotect from sleepable list. 
Technically the bpf programs can sleep while attached to bpf_lsm_file_mprotect,
but such programs need to access user memory. So they're in might_fault()
category. Which means they cannot be called from file_mprotect lsm hook that
takes write lock on mm->mmap_lock.
Adjust the test accordingly.

Also add might_fault() to __bpf_prog_enter_sleepable() to catch such deadlocks early.

Fixes: 1e6c62a88215 ("bpf: Introduce sleepable BPF programs")
Fixes: e68a144547fc ("selftests/bpf: Add sleepable tests")
Reported-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200831201651.82447-1-alexei.starovoitov@gmail.com
2020-08-31 23:03:57 +02:00
..
preload
bpf: Disallow BPF_PRELOAD in allmodconfig builds
2020-08-25 15:23:46 -07:00
arraymap.c
bpf: Introduce sleepable BPF programs
2020-08-28 21:20:33 +02:00
bpf_inode_storage.c
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
bpf_iter.c
bpf: Implement link_query for bpf iterators
2020-08-21 14:01:39 -07:00
bpf_local_storage.c
bpf: Split bpf_local_storage to bpf_sk_storage
2020-08-25 15:00:04 -07:00
bpf_lru_list.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
bpf_lru_list.h
bpf: Fix a typo "inacitve" -> "inactive"
2020-04-06 21:54:10 +02:00
bpf_lsm.c
bpf: Allow local storage to be used from LSM programs
2020-08-25 15:00:04 -07:00
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: Move btf_resolve_size into __btf_resolve_size
2020-08-25 15:37:41 -07:00
btf.c
bpf: Add BTF_SET_START/END macros
2020-08-25 15:37:41 -07:00
cgroup.c
bpf: Add support for forced LINK_DETACH command
2020-08-01 20:38:28 -07:00
core.c
bpf: Delete repeated words in comments
2020-08-07 18:57:24 +02:00
cpumap.c
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
devmap.c
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
disasm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295
2019-06-05 17:36:38 +02:00
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: Introduce sleepable BPF programs
2020-08-28 21:20:33 +02:00
helpers.c
bpf: Add bpf_copy_from_user() helper.
2020-08-28 21:20:33 +02:00
inode.c
bpf: Add kernel module with user mode driver that populates bpffs.
2020-08-20 16:02:36 +02:00
local_storage.c
bpf/local_storage: Fix build without CONFIG_CGROUP
2020-07-25 20:16:36 -07:00
lpm_trie.c
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
Makefile
bpf: Implement bpf_local_storage for inodes
2020-08-25 15:00:04 -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: Dont iterate over possible CPUs with interrupts disabled
2020-02-24 16:18:20 -08:00
percpu_freelist.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206
2019-05-30 11:29:53 -07:00
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: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
reuseport_array.c
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
ringbuf.c
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
stackmap.c
bpf: Add map_meta_equal map ops
2020-08-28 15:41:30 +02:00
syscall.c
bpf: Introduce sleepable BPF programs
2020-08-28 21:20:33 +02:00
sysfs_btf.c
bpf: Support llvm-objcopy for vmlinux BTF
2020-03-19 12:32:38 +01:00
task_iter.c
bpf: Refactor to provide aux info to bpf_iter_init_seq_priv_t
2020-07-25 20:16:32 -07:00
tnum.c
bpf: Verifier, do explicit ALU32 bounds tracking
2020-03-30 14:59:53 -07:00
trampoline.c
bpf: Remove bpf_lsm_file_mprotect from sleepable list.
2020-08-31 23:03:57 +02:00
verifier.c
bpf: Remove bpf_lsm_file_mprotect from sleepable list.
2020-08-31 23:03:57 +02:00