Vanilla 2.6.13 doesn't crash.
However, unpack a fresh copy of 2.6.13, edit include/linux/loop.h to
change LO_KEY_SIZE from 32 to 1844, and *boom*. [Don't ask me why
1844... that's just what PPDD wants.]
It's crashing somewhere in loop_set_status_old, probably during the
call to copy_from_user, but the crash messages aren't that helpful as
they are different each time, often seem to happen during an interrupt,
and usually contain pages of recursive calls to do_page_fault and
error_code.
The loop_set_status_old function has two local variables, each of which
is now 1812 bytes longer than it was, and I'm wondering if it's a stack
overflow problem. How much stack is a kernel function allowed to use,
anyway?
Replacing these variables with kmalloc'd pointers seems to stop the crashes
anyway, so I'll pass that tip on to the PPDD folks.
imc
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |