[Bug 568844] Re: mmap_min_addr /proc entry not visible to regular users

[Riku Voipio]

This breaks qemu linux-user as reads this file to know where to mmap:

open("/proc/sys/vm/mmap_min_addr", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=0, ...}) = 0
read(3, 0x7f82b8f7b000, 1024)           = -1 EPERM (Operation not permitted)
close(3)                                = 0
...
mmap(0x8000, 454656, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0) = -1 EPERM (Operation not permitted)
write(4, "mmap: Operation not permitted\n", 30mmap: Operation not permitted
...

-- 
mmap_min_addr /proc entry not visible to regular users
https://bugs.launchpad.net/bugs/568844
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.