4 files changed, 17 insertions, 6 deletions

diff --git a/README.md b/README.md
index cd432f05b..abccc2b4d 100644
--- a/README.md
+++ b/README.md
@@ -140,6 +140,9 @@ pciconfig_write, prof, profil, putpmsg, rtas, s390_runtime_instr, s390_mmio_read
 security, setdomainname,  sethostname, sgetmask, ssetmask, stty, subpage_prot, switch_endian,
 ulimit, vhangup, vserver. This brings us to a total of 91 syscalls blacklisted by default.
 
+get_mempolicy syscall was temporarily removed from the default seccomp list. It seems to break
+playing youtube videos on Firefox Nightly.
+
 
 
 ## New profiles:
diff --git a/src/fseccomp/seccomp.c b/src/fseccomp/seccomp.c
index 7d2ccbbce..a30a9e00b 100644
--- a/src/fseccomp/seccomp.c
+++ b/src/fseccomp/seccomp.c
@@ -162,9 +162,13 @@ static void add_default_list(int fd, int allow_debuggers) {
 #ifdef SYS_mbind
         filter_add_blacklist(fd, SYS_mbind, 0);
 #endif
-#ifdef SYS_get_mempolicy
-        filter_add_blacklist(fd, SYS_get_mempolicy, 0);
-#endif
+
+// breaking Firefox nightly when playing youtube videos
+// TODO: test again when firefox sandbox is finally released
+//#ifdef SYS_get_mempolicy
+//      filter_add_blacklist(fd, SYS_get_mempolicy, 0);
+//#endif
+
 #ifdef SYS_set_mempolicy
         filter_add_blacklist(fd, SYS_set_mempolicy, 0);
 #endif
diff --git a/src/fseccomp/seccomp_secondary.c b/src/fseccomp/seccomp_secondary.c
index 8270b7018..fceb2c3ec 100644
--- a/src/fseccomp/seccomp_secondary.c
+++ b/src/fseccomp/seccomp_secondary.c
@@ -67,7 +67,9 @@ void seccomp_secondary_64(const char *fname) {
                 BLACKLIST(210), // io_cancel
                 BLACKLIST(216), // remap_file_pages
                 BLACKLIST(237), // mbind
-                BLACKLIST(239), // get_mempolicy
+// breaking Firefox nightly when playing youtube videos
+// TODO: test again when firefox sandbox is finally released
+//              BLACKLIST(239), // get_mempolicy
                 BLACKLIST(238), // set_mempolicy
                 BLACKLIST(256), // migrate_pages
                 BLACKLIST(279), // move_pages
@@ -148,7 +150,9 @@ void seccomp_secondary_32(const char *fname) {
                 BLACKLIST(249), // io_cancel
                 BLACKLIST(257), // remap_file_pages
                 BLACKLIST(274), // mbind
-                BLACKLIST(275), // get_mempolicy
+// breaking Firefox nightly when playing youtube videos
+// TODO: test again when firefox sandbox is finally released
+//              BLACKLIST(275), // get_mempolicy
                 BLACKLIST(276), // set_mempolicy
                 BLACKLIST(294), // migrate_pages
                 BLACKLIST(317), // move_pages
diff --git a/src/man/firejail.txt b/src/man/firejail.txt
index 3a5e8560c..af2724aa9 100644
--- a/src/man/firejail.txt
+++ b/src/man/firejail.txt
@@ -1488,7 +1488,7 @@ iopl, ioperm, ioprio_set, swapon, swapoff, syslog, process_vm_readv, process_vm_
 sysfs,_sysctl, adjtimex, clock_adjtime, lookup_dcookie, perf_event_open, fanotify_init, kcmp,
 add_key, request_key, keyctl, uselib, acct, modify_ldt, pivot_root, io_setup,
 io_destroy, io_getevents, io_submit, io_cancel,
-remap_file_pages, mbind, get_mempolicy, set_mempolicy,
+remap_file_pages, mbind, set_mempolicy,
 migrate_pages, move_pages, vmsplice, chroot,
 tuxcall, reboot, mfsservctl, get_kernel_syms,
 bpf, clock_settime, personality, process_vm_writev, query_module,