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| author | David S. Miller | 2018-05-21 22:01:54 +0200 |
|---|---|---|
| committer | David S. Miller | 2018-05-21 22:01:54 +0200 |
| commit | 6f6e434aa267a6030477876d89444fe3a6b7a48d (patch) | |
| tree | 67755c422f1e85451aa646eae21d4c6f3f389d9f /kernel/events/ring_buffer.c | |
| parent | vmcore: move get_vmcore_size out of __init (diff) | |
| parent | Merge tag 'mips_fixes_4.17_2' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff) | |
| download | kernel-qcow2-linux-6f6e434aa267a6030477876d89444fe3a6b7a48d.tar.gz kernel-qcow2-linux-6f6e434aa267a6030477876d89444fe3a6b7a48d.tar.xz kernel-qcow2-linux-6f6e434aa267a6030477876d89444fe3a6b7a48d.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
S390 bpf_jit.S is removed in net-next and had changes in 'net',
since that code isn't used any more take the removal.
TLS data structures split the TX and RX components in 'net-next',
put the new struct members from the bug fix in 'net' into the RX
part.
The 'net-next' tree had some reworking of how the ERSPAN code works in
the GRE tunneling code, overlapping with a one-line headroom
calculation fix in 'net'.
Overlapping changes in __sock_map_ctx_update_elem(), keep the bits
that read the prog members via READ_ONCE() into local variables
before using them.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/events/ring_buffer.c')
| -rw-r--r-- | kernel/events/ring_buffer.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 6c6b3c48db71..1d8ca9ea9979 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -14,6 +14,7 @@ #include <linux/slab.h> #include <linux/circ_buf.h> #include <linux/poll.h> +#include <linux/nospec.h> #include "internal.h" @@ -867,8 +868,10 @@ perf_mmap_to_page(struct ring_buffer *rb, unsigned long pgoff) return NULL; /* AUX space */ - if (pgoff >= rb->aux_pgoff) - return virt_to_page(rb->aux_pages[pgoff - rb->aux_pgoff]); + if (pgoff >= rb->aux_pgoff) { + int aux_pgoff = array_index_nospec(pgoff - rb->aux_pgoff, rb->aux_nr_pages); + return virt_to_page(rb->aux_pages[aux_pgoff]); + } } return __perf_mmap_to_page(rb, pgoff); |