Re: Why replacing running executable file is forbidden, but overwriting of memory mapped shared object is allowed ?

On Fri, 10 Nov 2017 21:04:22 +0300, Lev Olshvang said:

I am going to patch inode reference count of mapped shared libs

Congrats. You just corrupted your file system. Hint 1: What happens if you decrement the count by one unnecessarily, and later on, probably during system shutdown, the reference count drops to zero instead of one? Hint 2: What happens if you incremented the count, and at system shutdown, there's still a reference left when the kernel tries to unmount and sync the filesystem?