diff options
| author | Jiri Olsa <[email protected]> | 2021-07-14 09:43:53 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2021-07-16 00:16:06 +0000 |
| commit | 7e6f3cd89f04a0a577002d5696288b482109d25c (patch) | |
| tree | dd610c2eeeeab77706fdbe55b881323d4b01dc9e /net/unix/af_unix.c | |
| parent | Merge branch 'bpf-timers' (diff) | |
| download | kernel-7e6f3cd89f04a0a577002d5696288b482109d25c.tar.gz kernel-7e6f3cd89f04a0a577002d5696288b482109d25c.zip | |
bpf, x86: Store caller's ip in trampoline stack
Storing caller's ip in trampoline's stack. Trampoline programs
can reach the IP in (ctx - 8) address, so there's no change in
program's arguments interface.
The IP address is takes from [fp + 8], which is return address
from the initial 'call fentry' call to trampoline.
This IP address will be returned via bpf_get_func_ip helper
helper, which is added in following patches.
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Alexei Starovoitov <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions