Re: MM bug

Jeff Coy Jr. (
Tue, 28 May 1996 18:22:37 -0700 (MST)

On Tue, 28 May 1996 wrote:

=> On Mon, 27 May 1996, Alfredo Sanjuan wrote:
=> > On Mon, 27 May 1996, Martin Mares wrote:
=> >
=> > > yet): You can simply crash the system by issuing "grep any_string /dev/zero".
=> > > As the lines in /dev/zero have infinite length, grep tries to allocate still more
=> > > memory for its line buffer until the memory is exhausted. But no out of memory
=> > > message appear and the system gets frozen (interrupts work, but normal processes
=> >
=> > Hmmm....seems to work well for me...
=> Also works for me. I get a "grep: memory exhausted" error and the system
=> continues like normal.

for me, using kernel v1.99.8, libc v5.3.12, and grep v2.0, i get the

no memory left for grep

reprinting about every 20 seconds, and although i can switch VTs, the
system is utterly unusable and completely unresponsive. shift-scrllock
shows no swap memory left. the only way out is to hit reset (i waited
about 10 minutes).

i have 24 megs ram, with a 30 meg swap partition. 486dx2 if that helps


Why Linux? source code. POSIX. tcpip. job control. support from the authors.
drivers for most hardware.  because one terminal or process is never enough.
    forget the other O/Ss, i use Linux- the choice of a GNU generation.