Re: Really good idea to allow mmap(0, FIXED)?

Arjan van de Ven writes:
 > >     mmap(0, 4096, PROT_READ|PROT_EXEC|PROT_WRITE,
 > >         MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
 > >     struct s *bar = 0;
 > 
 > the question isn't if it's a good idea to allow mmap(0) but to allow
 > mmap PROT_WRITE | PROT_EXEC !

It is if you want JITs, code loaders, virtualisation engines, etc
to continue working.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Follow-Ups:
- Re: Really good idea to allow mmap(0, FIXED)?
  - From: Arjan van de Ven <[email protected]>

References:
- Really good idea to allow mmap(0, FIXED)?
  - From: Michael Buesch <[email protected]>
- Re: Really good idea to allow mmap(0, FIXED)?
  - From: [email protected] (David Wagner)
- Re: Really good idea to allow mmap(0, FIXED)?
  - From: Arjan van de Ven <[email protected]>

Prev by Date: Re: [RFC PATCH] add pci_{request,free}_irq take #3
Next by Date: Re: [PATCH 3/5] ioremap balanced with iounmap for drivers/char/moxa.c
Previous by thread: Re: Really good idea to allow mmap(0, FIXED)?
Next by thread: Re: Really good idea to allow mmap(0, FIXED)?
Index(es):
- Date
- Thread

[Index of Archives] [Kernel Newbies] [Netfilter] [Bugtraq] [Photo] [Stuff] [Gimp] [Yosemite News] [MIPS Linux] [ARM Linux] [Linux Security] [Linux RAID] [Video 4 Linux] [Linux for the blind] [Linux Resources]