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| author | Ilya Leoshkevich <[email protected]> | 2022-02-09 02:17:44 +0000 |
|---|---|---|
| committer | Andrii Nakryiko <[email protected]> | 2022-02-09 05:37:50 +0000 |
| commit | fbca4a2f649730b67488a8b36140ce4d2cf13c63 (patch) | |
| tree | bd85a4c47968388af6f52981ec4dd94e3e02e4ba /net/switchdev/switchdev.c | |
| parent | libbpf: Allow overriding PT_REGS_PARM1{_CORE}_SYSCALL (diff) | |
| download | kernel-fbca4a2f649730b67488a8b36140ce4d2cf13c63.tar.gz kernel-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 <[email protected]>
Signed-off-by: Ilya Leoshkevich <[email protected]>
Signed-off-by: Andrii Nakryiko <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions