• Mark Rutland's avatar
    arm64: Correct __NR_compat_syscalls for bpf · 0f9132ce
    Mark Rutland authored
    Commit 97b56be1 (arm64: compat: Enable bpf syscall) made the
    usual mistake of forgetting to update __NR_compat_syscalls. Due to this,
    when el0_sync_compat calls el0_svc_naked, the test against sc_nr
    (__NR_compat_syscalls) will fail, and we'll call ni_sys, returning
    -ENOSYS to userspace.
    This patch bumps __NR_compat_syscalls appropriately, enabling the use of
    the bpf syscall from compat tasks.
    Due to the reorganisation of unistd{,32}.h as part of commit
    f3e5c847 (arm64: Add __NR_* definitions for compat syscalls) it
    is not currently possible to include both headers and sanity-check the
    value of __NR_compat_syscalls at build-time to prevent this from
    happening again. Additional rework is required to make such niceties a
    Cc: Will Deacon <will.deacon@arm.com>
    Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
    Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
    Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
unistd.h 1.61 KB