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| author |   Ilya Leoshkevich <iii@linux.ibm.com> | 2022-02-09 03:17:44 +0100 |
|---|---|---|
| committer |   Andrii Nakryiko <andrii@kernel.org> | 2022-02-08 21:37:50 -0800 |
| commit | fbca4a2f649730b67488a8b36140ce4d2cf13c63 (patch) | |
| tree | bd85a4c47968388af6f52981ec4dd94e3e02e4ba /include/net/net_namespace.h | |
| parent | libbpf: Allow overriding PT_REGS_PARM1{_CORE}_SYSCALL (diff) | |
| download | wireguard-linux-fbca4a2f649730b67488a8b36140ce4d2cf13c63.tar.xz wireguard-linux-fbca4a2f649730b67488a8b36140ce4d2cf13c63.zip | |
libbpf: Fix accessing the first syscall argument on arm64
On arm64, the first syscall argument should be accessed via orig_x0
(see arch/arm64/include/asm/syscall.h). Currently regs[0] is used
instead, leading to bpf_syscall_macro test failure.
orig_x0 cannot be added to struct user_pt_regs, since its layout is a
part of the ABI. Therefore provide access to it only through
PT_REGS_PARM1_CORE_SYSCALL() by using a struct pt_regs flavor.
Reported-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220209021745.2215452-10-iii@linux.ibm.com
Diffstat (limited to 'include/net/net_namespace.h')
0 files changed, 0 insertions, 0 deletions