Date: Tue, 14 Feb 2006 16:35:46 -0600 (CST) From: Mark Tinguely <tinguely@casselton.net> To: chris@unixpages.org, current@freebsd.org Subject: Re: panic: Trying sleep, but thread marked as sleeping prohibited Message-ID: <200602142235.k1EMZknZ002411@casselton.net> In-Reply-To: <20060214205050.GA6218@haakonia.hitnet.RWTH-Aachen.DE>
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>
> I get the following panic now and then when trying to mount my external
> usb drive. The panic only occurs when the machine has been up for some
> time.
>
> FreeBSD serenity.local 7.0-CURRENT FreeBSD 7.0-CURRENT #8: Sun Feb 12
> 11:00:10 CET 2006 chris@serenity.local:/usr/obj/usr/src/sys/SERENITY
> i386
>
> panic: Trying sleep, but thread marked as sleeping prohibited
There are 2 open problems on this one error. Try:
*** vm_contig.c.orig Mon Jan 30 09:22:51 2006
--- vm_contig.c Wed Feb 1 07:51:33 2006
***************
*** 86,92 ****
#include <vm/vm_extern.h>
static int
! vm_contig_launder_page(vm_page_t m)
{
vm_object_t object;
vm_page_t m_tmp;
--- 86,92 ----
#include <vm/vm_extern.h>
static int
! vm_contig_launder_page(vm_page_t m, int flags)
{
vm_object_t object;
vm_page_t m_tmp;
***************
*** 95,100 ****
--- 95,114 ----
object = m->object;
if (!VM_OBJECT_TRYLOCK(object))
return (EAGAIN);
+
+ if (flags & M_NOWAIT) { /* cannot sleep in interrupt mode */
+ if ((m->flags & PG_BUSY) || m->busy) {
+ VM_OBJECT_UNLOCK(object);
+ return (EBUSY);
+ } else {
+ vm_page_test_dirty(m);
+ if (m->dirty) {
+ VM_OBJECT_UNLOCK(object);
+ return (EAGAIN);
+ }
+ }
+ }
+
if (vm_page_sleep_if_busy(m, TRUE, "vpctw0")) {
VM_OBJECT_UNLOCK(object);
vm_page_lock_queues();
***************
*** 129,135 ****
}
static int
! vm_contig_launder(int queue)
{
vm_page_t m, next;
int error;
--- 143,149 ----
}
static int
! vm_contig_launder(int queue, int flags)
{
vm_page_t m, next;
int error;
***************
*** 143,149 ****
KASSERT(VM_PAGE_INQUEUE2(m, queue),
("vm_contig_launder: page %p's queue is not %d", m, queue));
! error = vm_contig_launder_page(m);
if (error == 0)
return (TRUE);
if (error == EBUSY)
--- 157,163 ----
KASSERT(VM_PAGE_INQUEUE2(m, queue),
("vm_contig_launder: page %p's queue is not %d", m, queue));
! error = vm_contig_launder_page(m, flags);
if (error == 0)
return (TRUE);
if (error == EBUSY)
***************
*** 224,235 ****
actmax = vm_page_queues[PQ_ACTIVE].lcnt;
again1:
if (inactl < inactmax &&
! vm_contig_launder(PQ_INACTIVE)) {
inactl++;
goto again1;
}
if (actl < actmax &&
! vm_contig_launder(PQ_ACTIVE)) {
actl++;
goto again1;
}
--- 238,249 ----
actmax = vm_page_queues[PQ_ACTIVE].lcnt;
again1:
if (inactl < inactmax &&
! vm_contig_launder(PQ_INACTIVE, flags)) {
inactl++;
goto again1;
}
if (actl < actmax &&
! vm_contig_launder(PQ_ACTIVE, flags)) {
actl++;
goto again1;
}
***************
*** 381,387 ****
vm_page_t
vm_page_alloc_contig(vm_pindex_t npages, vm_paddr_t low, vm_paddr_t high,
! vm_offset_t alignment, vm_offset_t boundary)
{
vm_object_t object;
vm_offset_t size;
--- 395,401 ----
vm_page_t
vm_page_alloc_contig(vm_pindex_t npages, vm_paddr_t low, vm_paddr_t high,
! vm_offset_t alignment, vm_offset_t boundary, int flags)
{
vm_object_t object;
vm_offset_t size;
***************
*** 474,480 ****
pqtype != PQ_CACHE) {
if (m->queue == PQ_ACTIVE ||
m->queue == PQ_INACTIVE) {
! if (vm_contig_launder_page(m) != 0)
goto cleanup_freed;
pqtype = m->queue - m->pc;
if (pqtype != PQ_FREE &&
--- 488,494 ----
pqtype != PQ_CACHE) {
if (m->queue == PQ_ACTIVE ||
m->queue == PQ_INACTIVE) {
! if (vm_contig_launder_page(m, flags) != 0)
goto cleanup_freed;
pqtype = m->queue - m->pc;
if (pqtype != PQ_FREE &&
***************
*** 581,587 ****
boundary, kernel_map);
} else {
pages = vm_page_alloc_contig(npgs, low, high,
! alignment, boundary);
if (pages == NULL) {
ret = NULL;
} else {
--- 595,601 ----
boundary, kernel_map);
} else {
pages = vm_page_alloc_contig(npgs, low, high,
! alignment, boundary, flags);
if (pages == NULL) {
ret = NULL;
} else {
*** vm_page.h.orig Wed Jan 25 09:01:28 2006
--- vm_page.h Wed Feb 1 07:50:32 2006
***************
*** 321,327 ****
void vm_page_activate (vm_page_t);
vm_page_t vm_page_alloc (vm_object_t, vm_pindex_t, int);
vm_page_t vm_page_alloc_contig (vm_pindex_t, vm_paddr_t, vm_paddr_t,
! vm_offset_t, vm_offset_t);
void vm_page_release_contig (vm_page_t, vm_pindex_t);
vm_page_t vm_page_grab (vm_object_t, vm_pindex_t, int);
void vm_page_cache (register vm_page_t);
--- 321,327 ----
void vm_page_activate (vm_page_t);
vm_page_t vm_page_alloc (vm_object_t, vm_pindex_t, int);
vm_page_t vm_page_alloc_contig (vm_pindex_t, vm_paddr_t, vm_paddr_t,
! vm_offset_t, vm_offset_t, int);
void vm_page_release_contig (vm_page_t, vm_pindex_t);
vm_page_t vm_page_grab (vm_object_t, vm_pindex_t, int);
void vm_page_cache (register vm_page_t);
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