diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc
index 7f181258eab52..b7da659875574 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors_ioctl.inc
@@ -370,15 +370,6 @@ static void ioctl_table_fill() {
 
 #if SANITIZER_GLIBC
   // _(SIOCDEVPLIP, WRITE, struct_ifreq_sz); // the same as EQL_ENSLAVE
-  _(CYGETDEFTHRESH, WRITE, sizeof(int));
-  _(CYGETDEFTIMEOUT, WRITE, sizeof(int));
-  _(CYGETMON, WRITE, struct_cyclades_monitor_sz);
-  _(CYGETTHRESH, WRITE, sizeof(int));
-  _(CYGETTIMEOUT, WRITE, sizeof(int));
-  _(CYSETDEFTHRESH, NONE, 0);
-  _(CYSETDEFTIMEOUT, NONE, 0);
-  _(CYSETTHRESH, NONE, 0);
-  _(CYSETTIMEOUT, NONE, 0);
   _(EQL_EMANCIPATE, WRITE, struct_ifreq_sz);
   _(EQL_ENSLAVE, WRITE, struct_ifreq_sz);
   _(EQL_GETMASTRCFG, WRITE, struct_ifreq_sz);
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
index 12dd39e674ac8..7abaeb880bf34 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.cpp
@@ -143,7 +143,6 @@ typedef struct user_fpregs elf_fpregset_t;
 # include <sys/procfs.h>
 #endif
 #include <sys/user.h>
-#include <linux/cyclades.h>
 #include <linux/if_eql.h>
 #include <linux/if_plip.h>
 #include <linux/lp.h>
@@ -459,7 +458,6 @@ unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
 
 #if SANITIZER_GLIBC
   unsigned struct_ax25_parms_struct_sz = sizeof(struct ax25_parms_struct);
-  unsigned struct_cyclades_monitor_sz = sizeof(struct cyclades_monitor);
 #if EV_VERSION > (0x010000)
   unsigned struct_input_keymap_entry_sz = sizeof(struct input_keymap_entry);
 #else
@@ -823,15 +821,6 @@ unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
 #endif // SANITIZER_LINUX
 
 #if SANITIZER_LINUX && !SANITIZER_ANDROID
-  unsigned IOCTL_CYGETDEFTHRESH = CYGETDEFTHRESH;
-  unsigned IOCTL_CYGETDEFTIMEOUT = CYGETDEFTIMEOUT;
-  unsigned IOCTL_CYGETMON = CYGETMON;
-  unsigned IOCTL_CYGETTHRESH = CYGETTHRESH;
-  unsigned IOCTL_CYGETTIMEOUT = CYGETTIMEOUT;
-  unsigned IOCTL_CYSETDEFTHRESH = CYSETDEFTHRESH;
-  unsigned IOCTL_CYSETDEFTIMEOUT = CYSETDEFTIMEOUT;
-  unsigned IOCTL_CYSETTHRESH = CYSETTHRESH;
-  unsigned IOCTL_CYSETTIMEOUT = CYSETTIMEOUT;
   unsigned IOCTL_EQL_EMANCIPATE = EQL_EMANCIPATE;
   unsigned IOCTL_EQL_ENSLAVE = EQL_ENSLAVE;
   unsigned IOCTL_EQL_GETMASTRCFG = EQL_GETMASTRCFG;
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
index 836b178c131ba..8a156b7fcb80a 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_posix.h
@@ -983,7 +983,6 @@ extern unsigned struct_vt_mode_sz;
 
 #if SANITIZER_LINUX && !SANITIZER_ANDROID
 extern unsigned struct_ax25_parms_struct_sz;
-extern unsigned struct_cyclades_monitor_sz;
 extern unsigned struct_input_keymap_entry_sz;
 extern unsigned struct_ipx_config_data_sz;
 extern unsigned struct_kbdiacrs_sz;
@@ -1328,15 +1327,6 @@ extern unsigned IOCTL_VT_WAITACTIVE;
 #endif  // SANITIZER_LINUX
 
 #if SANITIZER_LINUX && !SANITIZER_ANDROID
-extern unsigned IOCTL_CYGETDEFTHRESH;
-extern unsigned IOCTL_CYGETDEFTIMEOUT;
-extern unsigned IOCTL_CYGETMON;
-extern unsigned IOCTL_CYGETTHRESH;
-extern unsigned IOCTL_CYGETTIMEOUT;
-extern unsigned IOCTL_CYSETDEFTHRESH;
-extern unsigned IOCTL_CYSETDEFTIMEOUT;
-extern unsigned IOCTL_CYSETTHRESH;
-extern unsigned IOCTL_CYSETTIMEOUT;
 extern unsigned IOCTL_EQL_EMANCIPATE;
 extern unsigned IOCTL_EQL_ENSLAVE;
 extern unsigned IOCTL_EQL_GETMASTRCFG;