linux.git/arch/um, branch v2.6.13

[PATCH] mmaper_kern.c fixes [buffer overruns]

2005-08-27T17:11:40+00:00

 - copy_from_user() can fail; ->write() must check its return value.

 - severe buffer overruns both in ->read() and ->write() - lseek to the
   end (i.e.  to mmapper_size) and

	if (count + *ppos > mmapper_size)
		count = count + *ppos - mmapper_size;

   will do absolutely nothing.  Then it will call

	copy_to_user(buf,&v_buf[*ppos],count);

   with obvious results (similar for ->write()).

   Fixed by turning read to simple_read_from_buffer() and by doing
   normal limiting of count in ->write().

 - gratitious lock_kernel() in ->mmap() - it's useless there.

 - lots of gratuitous includes.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

[PATCH] uml: fix a crash under screen

2005-08-18T19:53:58+00:00

Running UML inside a detached screen delivers SIGWINCH when UML is not
expecting it.  This patch ignores them.

Signed-off-by: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: fix the x86_64 build

2005-08-18T19:53:58+00:00

asm/elf.h breaks the x86_64 build.

Signed-off-by: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: fix vsyscall brokenness

2005-07-29T22:01:14+00:00

The #if/#ifdef cleanup exposed a bug in UML's ELF header processing.  With
this bug fixed, UML recognizes the vsyscall info coming from the host.  On
FC4, there is a vsyscall page low in the address space, which UML doesn't
provide.  This causes an infinite page fault loop and a hang on boot.

This patch works around that by making this look like a no-vsyscall system.

Signed-off-by: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: implement hostfs syncing

2005-07-29T04:46:05+00:00

Actually implement the hostfs "sync" method.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso 
Cc: Jeff Dike 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: Clean up prink calls

2005-07-29T04:46:05+00:00

printk() calls should include appropriate KERN_* constant.

Signed-off-by: Christophe Lucas 
Signed-off-by: Domen Puncer 
Signed-off-by: Jeff Dike 
Cc: Paolo 'Blaisorblade' Giarrusso 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: Fix typo

2005-07-29T04:46:04+00:00

Fix a typo in wait_stub_done.

Signed-off-by: Bodo Stroesser 
Signed-off-by: Jeff Dike 
Cc: Paolo 'Blaisorblade' Giarrusso 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: Fix load average >=1

2005-07-29T04:46:04+00:00

update_process_times was missing its irq_enter/irq_exit wrapper.  This caused
ksoftirqd to be scheduled on every clock tick.

Signed-off-by: Jeff Dike 
Cc: Paolo 'Blaisorblade' Giarrusso 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: Fix redundant assignment

2005-07-29T04:46:04+00:00

By this point, .is_user has already been set, so this assignment is useless.

Signed-off-by: Jeff Dike 
Cc: Paolo 'Blaisorblade' Giarrusso 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] uml: Fix skas0 stub return

2005-07-29T04:46:04+00:00

It's wrong to pop a fixed number of words from stack before calling sigreturn,
as the number depends on what code is generated by the compiler for the start
of stub_segv_handler().  What we need is esp containing the address of
sigcontext.  So we explicitly load that pointer into esp.

Signed-off-by: Bodo Stroesser 
Signed-off-by: Jeff Dike 
Cc: Paolo 'Blaisorblade' Giarrusso 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds