On Mon, Nov 19, 2018 at 11:32:39AM +0100, Christian Brauner wrote: > diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl > index 3cf7b533b3d1..e637eab883e9 100644 > --- a/arch/x86/entry/syscalls/syscall_32.tbl > +++ b/arch/x86/entry/syscalls/syscall_32.tbl > @@ -398,3 +398,4 @@ > 384 i386 arch_prctl sys_arch_prctl __ia32_compat_sys_arch_prctl > 385 i386 io_pgetevents sys_io_pgetevents __ia32_compat_sys_io_pgetevents > 386 i386 rseq sys_rseq __ia32_sys_rseq > +387 i386 procfd_signal sys_procfd_signal __ia32_sys_procfd_signal > diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl > index f0b1709a5ffb..e95f6741ab42 100644 > --- a/arch/x86/entry/syscalls/syscall_64.tbl > +++ b/arch/x86/entry/syscalls/syscall_64.tbl > @@ -343,6 +343,7 @@ > 332 common statx __x64_sys_statx > 333 common io_pgetevents __x64_sys_io_pgetevents > 334 common rseq __x64_sys_rseq > +335 common procfd_signal __x64_sys_procfd_signal You have wired up the syscall on x86 but have not added the syscall number to the generic syscall header (include/uapi/asm-generic/unistd.h), why?