r0 = shmget$private(0x0, 0x1000, 0x0, &(0x7f0000ffc000/0x1000)=nil)
perf_event_open(0x0, 0x0, 0x0, 0xffffffffffffffff, 0x0)
shmat(r0, &(0x7f0000ffc000/0x1000)=nil, 0x4000)
remap_file_pages(&(0x7f0000ffc000/0x1000)=nil, 0x1000, 0x0, 0x0, 0x0)