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| author | Jakub Kicinski <kuba@kernel.org> | 2021-08-10 16:52:09 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-08-10 16:53:11 +0200 |
| commit | 2e273b0996abd1dd054a043c8e4dc0d93309ba1d (patch) | |
| tree | b9589b4678dc6b08387779c23cc092b5285f11d6 /include | |
| parent | Merge branch 'fdb-backpressure-fixes' (diff) | |
| parent | bpf, core: Fix kernel-doc notation (diff) | |
| download | linux-2e273b0996abd1dd054a043c8e4dc0d93309ba1d.tar.xz linux-2e273b0996abd1dd054a043c8e4dc0d93309ba1d.zip | |
Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
bpf 2021-08-10
We've added 5 non-merge commits during the last 2 day(s) which contain
a total of 7 files changed, 27 insertions(+), 15 deletions(-).
1) Fix missing bpf_read_lock_trace() context for BPF loader progs, from Yonghong Song.
2) Fix corner case where BPF prog retrieves wrong local storage, also from Yonghong Song.
3) Restrict availability of BPF write_user helper behind lockdown, from Daniel Borkmann.
4) Fix multiple kernel-doc warnings in BPF core, from Randy Dunlap.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf, core: Fix kernel-doc notation
bpf: Fix potentially incorrect results with bpf_get_local_storage()
bpf: Add missing bpf_read_[un]lock_trace() for syscall program
bpf: Add lockdown check for probe_write_user helper
bpf: Add _kernel suffix to internal lockdown_bpf_read
====================
Link: https://lore.kernel.org/r/20210810144025.22814-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf-cgroup.h | 4 | ||||
| -rw-r--r-- | include/linux/security.h | 3 |
2 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h index 8b77d08d4b47..6c9b10d82c80 100644 --- a/include/linux/bpf-cgroup.h +++ b/include/linux/bpf-cgroup.h @@ -201,8 +201,8 @@ static inline void bpf_cgroup_storage_unset(void) { int i; - for (i = 0; i < BPF_CGROUP_STORAGE_NEST_MAX; i++) { - if (unlikely(this_cpu_read(bpf_cgroup_storage_info[i].task) != current)) + for (i = BPF_CGROUP_STORAGE_NEST_MAX - 1; i >= 0; i--) { + if (likely(this_cpu_read(bpf_cgroup_storage_info[i].task) != current)) continue; this_cpu_write(bpf_cgroup_storage_info[i].task, NULL); diff --git a/include/linux/security.h b/include/linux/security.h index 24eda04221e9..5b7288521300 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -120,10 +120,11 @@ enum lockdown_reason { LOCKDOWN_MMIOTRACE, LOCKDOWN_DEBUGFS, LOCKDOWN_XMON_WR, + LOCKDOWN_BPF_WRITE_USER, LOCKDOWN_INTEGRITY_MAX, LOCKDOWN_KCORE, LOCKDOWN_KPROBES, - LOCKDOWN_BPF_READ, + LOCKDOWN_BPF_READ_KERNEL, LOCKDOWN_PERF, LOCKDOWN_TRACEFS, LOCKDOWN_XMON_RW, |