From: Tomas Kalibera <kalibera@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai-core <xenomai@xenomai.org>
Subject: Re: [Xenomai-core] Kernel crash with Xenomai (caused by fork?)
Date: Mon, 31 Mar 2008 20:00:50 -0400 [thread overview]
Message-ID: <47F17B32.7070505@domain.hid> (raw)
In-Reply-To: <18417.18921.588809.645062@domain.hid>
[-- Attachment #1: Type: text/plain, Size: 614 bytes --]
I added a missing underscore and re-tried, and none of the debug
messages was printed. I added another one to make sure that there is not
a problem with getting printk messages to the serial console. The
resulting highmem_32.c and the output is attached.
T
Gilles Chanteperdrix wrote:
> Gilles Chanteperdrix wrote:
> > Tomas Kalibera wrote:
> > >
> > > Crashed on the very same line as before
> > > Tomas
> >
> > Ok. Let us look for unbalanced kmap_atomics then. Try this patch instead.
>
> Just when I hit the reply button, I realize that I forgot something. So,
> try this one instead.
>
>
[-- Attachment #2: highmem_32.c --]
[-- Type: text/x-csrc, Size: 3867 bytes --]
#include <linux/highmem.h>
#include <linux/module.h>
static struct {
const char *file;
unsigned line;
} last_km_user0 [NR_CPUS];
void *kmap(struct page *page)
{
might_sleep();
if (!PageHighMem(page))
return page_address(page);
return kmap_high(page);
}
void kunmap(struct page *page)
{
if (in_interrupt())
BUG();
if (!PageHighMem(page))
return;
kunmap_high(page);
}
/*
* kmap_atomic/kunmap_atomic is significantly faster than kmap/kunmap because
* no global lock is needed and because the kmap code must perform a global TLB
* invalidation when the kmap pool wraps.
*
* However when holding an atomic kmap is is not legal to sleep, so atomic
* kmaps are appropriate for short, tight code paths only.
*/
void *_kmap_atomic_prot(struct page *page, enum km_type type,
pgprot_t prot, const char *file, unsigned line)
{
enum fixed_addresses idx;
unsigned long vaddr;
/* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */
pagefault_disable();
if (!PageHighMem(page))
return page_address(page);
idx = type + KM_TYPE_NR*smp_processor_id();
vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
if (!pte_none(*(kmap_pte-idx))) {
if (type == KM_USER0) {
printk("KM_USER0 already mapped at %s:%d\n",
last_km_user0[smp_processor_id()].file,
last_km_user0[smp_processor_id()].line);
} else {
printk("type is NOT KM_USER0\n");
}
BUG();
} else if (type == KM_USER0) {
last_km_user0[smp_processor_id()].file = file;
last_km_user0[smp_processor_id()].line = line;
}
set_pte(kmap_pte-idx, mk_pte(page, prot));
arch_flush_lazy_mmu_mode();
return (void *)vaddr;
}
void *_kmap_atomic(struct page *page, enum km_type type,
const char *file, unsigned line)
{
return _kmap_atomic_prot(page, type, kmap_prot, file, line);
}
void kunmap_atomic(void *kvaddr, enum km_type type)
{
unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
/*
* Force other mappings to Oops if they'll try to access this pte
* without first remap it. Keeping stale mappings around is a bad idea
* also, in case the page changes cacheability attributes or becomes
* a protected page in a hypervisor.
*/
if (vaddr == __fix_to_virt(FIX_KMAP_BEGIN+idx))
kpte_clear_flush(kmap_pte-idx, vaddr);
else {
#ifdef CONFIG_DEBUG_HIGHMEM
BUG_ON(vaddr < PAGE_OFFSET);
BUG_ON(vaddr >= (unsigned long)high_memory);
#endif
}
if (type == KM_USER0) {
last_km_user0[smp_processor_id()].file = NULL;
last_km_user0[smp_processor_id()].line = 0;
}
arch_flush_lazy_mmu_mode();
pagefault_enable();
}
/* This is the same as kmap_atomic() but can map memory that doesn't
* have a struct page associated with it.
*/
void *_kmap_atomic_pfn(unsigned long pfn, enum km_type type,
const char *file, unsigned line)
{
enum fixed_addresses idx;
unsigned long vaddr;
pagefault_disable();
idx = type + KM_TYPE_NR*smp_processor_id();
vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
if (!pte_none(*(kmap_pte-idx))) {
if (type == KM_USER0)
printk("KM_USER0 already mapped at %s:%d\n",
last_km_user0[smp_processor_id()].file,
last_km_user0[smp_processor_id()].line);
BUG();
} else if (type == KM_USER0) {
last_km_user0[smp_processor_id()].file = file;
last_km_user0[smp_processor_id()].line = line;
}
set_pte(kmap_pte-idx, pfn_pte(pfn, kmap_prot));
arch_flush_lazy_mmu_mode();
return (void*) vaddr;
}
struct page *kmap_atomic_to_page(void *ptr)
{
unsigned long idx, vaddr = (unsigned long)ptr;
pte_t *pte;
if (vaddr < FIXADDR_START)
return virt_to_page(ptr);
idx = virt_to_fix(vaddr);
pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
return pte_page(*pte);
}
EXPORT_SYMBOL(kmap);
EXPORT_SYMBOL(kunmap);
EXPORT_SYMBOL(_kmap_atomic);
EXPORT_SYMBOL(kunmap_atomic);
EXPORT_SYMBOL(kmap_atomic_to_page);
[-- Attachment #3: all --]
[-- Type: text/plain, Size: 17463 bytes --]
[ 255.285392] ------------[ cut here ]------------
[ 255.289992] kernel BUG at arch/x86/mm/highmem_32.c:56!
[ 255.295107] invalid opcode: 0000 [#1] PREEMPT SMP
[ 255.299901] Modules linked in: rfcomm l2cap bluetooth ppdev sbp2 ipv6 parport_pc lp parport pcspkr iTCO_wdt iTCO_vendor_se
[ 255.327057]
[ 255.328538] Pid: 4986, comm: ovmtask Not tainted (2.6.24.3xenomaip3 #2)
[ 255.335123] EIP: 0060:[<c011a966>] EFLAGS: 00010286 CPU: 0
[ 255.340588] EIP is at _kmap_atomic_prot+0xa6/0x120
[ 255.345356] EAX: 00000027 EBX: c2b27520 ECX: 00000000 EDX: 02bcf000
[ 255.351594] ESI: fffff000 EDI: 00000007 EBP: 00000007 ESP: decade70
[ 255.357832] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 255.363205] Process ovmtask (pid: 4986, ti=decac000 task=df820d90 task.ti=decac000)<0>
[ 255.370653] I-pipe domain Linux
[ 255.374044] Stack: c039a438 00000010 00000000 0000022b c03a1f9e 00000163 0000022b 00000000
[ 255.382435] c2b2752c 08003875 c011a9fa c03a1f9e 0000022b fffb2000 c01a9976 0000022b
[ 255.390827] fffb7000 fffb6000 df472ba8 dee09ac0 dee09740 df3b4084 df3b1084 08615000
[ 255.399221] Call Trace:
[ 255.401835] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 255.406440] [<c01a9976>] copy_page_range+0x146/0x590
[ 255.411484] [<c01225ff>] copy_process+0x8df/0x1250
[ 255.416353] [<c01231ac>] do_fork+0x4c/0x200
[ 255.420613] [<c01022d2>] sys_clone+0x32/0x40
[ 255.424960] [<c01043a1>] sysenter_past_esp+0x6e/0x72
[ 255.429998] =======================
[ 255.433554] Code: 04 82 8b 35 f8 4a 3d c0 8d 2c 38 8d 04 ad 00 00 00 00 29 c1 8b 01 85 c0 74 1b 83 ff 03 74 3f c7 04 24 3
[ 255.452899] EIP: [<c011a966>] _kmap_atomic_prot+0xa6/0x120 SS:ESP 0068:decade70
[ 255.460280] ---[ end trace 6f16dfbea90303ec ]---
[ 255.464881] note: ovmtask[4986] exited with preempt_count 1
[ 255.470435] BUG: scheduling while atomic: ovmtask/4986/0x00000002
[ 255.476505] Pid: 4986, comm: ovmtask Tainted: G D 2.6.24.3xenomaip3 #2
[ 255.483440] [<c0313fed>] schedule+0x53d/0x770
[ 255.487882] [<c0140e04>] clockevents_program_event+0xa4/0x120
[ 255.493710] [<c0315229>] rwsem_down_failed_common+0x69/0x190
[ 255.499448] [<c031539a>] rwsem_down_read_failed+0x1a/0x24
[ 255.504926] [<c0315407>] call_rwsem_down_read_failed+0x7/0xc
[ 255.510663] [<c0314a5a>] down_read+0xa/0x10
[ 255.514929] [<c0143a69>] futex_wake+0x19/0xd0
[ 255.519369] [<c011459e>] smp_apic_timer_interrupt+0x4e/0x80
[ 255.525020] [<c027b0bc>] serial_in+0x2c/0xa0
[ 255.529374] [<c0144d98>] do_futex+0x5d8/0xb30
[ 255.533816] [<c015667c>] __xirq_end+0x0/0x50
[ 255.538172] [<c01569da>] __ipipe_unstall_root+0x4a/0x50
[ 255.543475] [<c012493a>] vprintk+0x2ca/0x3b0
[ 255.547830] [<c0145388>] sys_futex+0x98/0x110
[ 255.552270] [<c0121bc7>] mm_release+0x87/0xa0
[ 255.556709] [<c0126073>] exit_mm+0x13/0xf0
[ 255.560889] [<c0127b3f>] do_exit+0x4ef/0x820
[ 255.565243] [<c0105b67>] die+0x267/0x270
[ 255.569252] [<c0105e81>] do_invalid_op+0x81/0x90
[ 255.573952] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 255.579084] [<c01388db>] autoremove_wake_function+0x1b/0x50
[ 255.584749] [<c011b19b>] __wake_up_common+0x4b/0x80
[ 255.589708] [<c011c3be>] __wake_up+0x3e/0x60
[ 255.594062] [<c0315cc2>] _spin_unlock_irqrestore+0x12/0x40
[ 255.599625] [<c01242bb>] wake_up_klogd+0x3b/0x40
[ 255.604323] [<c012493a>] vprintk+0x2ca/0x3b0
[ 255.608676] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 255.614417] [<c0315ecb>] error_code+0x77/0x84
[ 255.618860] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 255.623993] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 255.628606] [<c01a9976>] copy_page_range+0x146/0x590
[ 255.633657] [<c01225ff>] copy_process+0x8df/0x1250
[ 255.638532] [<c01231ac>] do_fork+0x4c/0x200
[ 255.642801] [<c01022d2>] sys_clone+0x32/0x40
[ 255.647154] [<c01043a1>] sysenter_past_esp+0x6e/0x72
[ 255.652200] =======================
[ 255.656668] type is NOT KM_USER0
[ 255.659886] ------------[ cut here ]------------
[ 255.664482] kernel BUG at arch/x86/mm/highmem_32.c:56!
[ 255.669596] invalid opcode: 0000 [#2] PREEMPT SMP
[ 255.674389] Modules linked in: rfcomm l2cap bluetooth ppdev sbp2 ipv6 parport_pc lp parport pcspkr iTCO_wdt iTCO_vendor_se
[ 255.701549]
[ 255.703029] Pid: 4306, comm: syslogd Tainted: G D (2.6.24.3xenomaip3 #2)
[ 255.710132] EIP: 0060:[<c011a966>] EFLAGS: 00010296 CPU: 0
[ 255.715593] EIP is at _kmap_atomic_prot+0xa6/0x120
[ 255.720360] EAX: 00000027 EBX: c2b28240 ECX: 02bcf000 EDX: 00000000
[ 255.726597] ESI: fffff000 EDI: 00000007 EBP: 00000007 ESP: dedf5ebc
[ 255.732835] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 255.738208] Process syslogd (pid: 4306, ti=dedf4000 task=decc0c10 task.ti=dedf4000)<0>
[ 255.745656] I-pipe domain Linux
[ 255.749046] Stack: c039a438 decc0c10 c01388c0 00000a21 c03a1f9e 00000163 00000a21 df806128
[ 255.757438] c044a720 f7fd73c0 c011a9fa c03a1f9e 00000a21 00000000 c01a8d71 00000a21
[ 255.765829] 00000000 00000002 f7a5c7dc 00000000 b7f48390 df806128 f7fd73c0 df8a8b7c
[ 255.774221] Call Trace:
[ 255.776835] [<c01388c0>] autoremove_wake_function+0x0/0x50
[ 255.782391] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 255.786995] [<c01a8d71>] handle_mm_fault+0x91/0x690
[ 255.791946] [<c01bac7a>] do_readv_writev+0x13a/0x1b0
[ 255.796983] [<c0317b36>] do_page_fault+0x336/0x750
[ 255.801849] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 255.807578] [<c01bad2c>] vfs_writev+0x3c/0x50
[ 255.812010] [<c0315ecb>] error_code+0x77/0x84
[ 255.816443] =======================
[ 255.819999] Code: 04 82 8b 35 f8 4a 3d c0 8d 2c 38 8d 04 ad 00 00 00 00 29 c1 8b 01 85 c0 74 1b 83 ff 03 74 3f c7 04 24 3
[ 255.839315] EIP: [<c011a966>] _kmap_atomic_prot+0xa6/0x120 SS:ESP 0068:dedf5ebc
[ 255.846634] ---[ end trace 6f16dfbea90303ec ]---
[ 255.851233] note: syslogd[4306] exited with preempt_count 1
[ 255.856790] type is NOT KM_USER0
[ 255.860006] ------------[ cut here ]------------
[ 255.864602] kernel BUG at arch/x86/mm/highmem_32.c:56!
[ 255.869717] invalid opcode: 0000 [#3] PREEMPT SMP
[ 255.874510] Modules linked in: rfcomm l2cap bluetooth ppdev sbp2 ipv6 parport_pc lp parport pcspkr iTCO_wdt iTCO_vendor_se
[ 255.901662]
[ 255.903143] Pid: 4306, comm: syslogd Tainted: G D (2.6.24.3xenomaip3 #2)
[ 255.910245] EIP: 0060:[<c011a966>] EFLAGS: 00010282 CPU: 0
[ 255.915706] EIP is at _kmap_atomic_prot+0xa6/0x120
[ 255.920472] EAX: 00000027 EBX: c2b281a0 ECX: 02bcf000 EDX: 00000000
[ 255.926709] ESI: fffff000 EDI: 00000007 EBP: 00000007 ESP: dedf5c80
[ 255.932947] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 255.938319] Process syslogd (pid: 4306, ti=dedf4000 task=decc0c10 task.ti=dedf4000)<0>
[ 255.945768] I-pipe domain Linux
[ 255.949158] Stack: c039a438 c044a5e0 c0449280 000002bc c03a1f9e 00000163 000002bc df9c1128
[ 255.957547] 08048000 00000000 c011a9fa c03a1f9e 000002bc 00000000 c01a7611 000002bc
[ 255.965935] 0804efff 00000000 df9c1128 dedf5d28 00000000 00000001 0804f000 df8a8080
[ 255.974323] Call Trace:
[ 255.976937] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 255.981542] [<c01a7611>] unmap_vmas+0x181/0x5a0
[ 255.986148] [<c01aae6d>] exit_mmap+0x7d/0x120
[ 255.990580] [<c0121c40>] mmput+0x30/0xe0
[ 255.994578] [<c012779c>] do_exit+0x14c/0x820
[ 255.998924] [<c0105b67>] die+0x267/0x270
[ 256.002924] [<c0105e81>] do_invalid_op+0x81/0x90
[ 256.007615] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 256.012738] [<c015667c>] __xirq_end+0x0/0x50
[ 256.017083] [<c01569da>] __ipipe_unstall_root+0x4a/0x50
[ 256.022377] [<c012493a>] vprintk+0x2ca/0x3b0
[ 256.026721] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 256.032451] [<c0315ecb>] error_code+0x77/0x84
[ 256.036882] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 256.042005] [<c01388c0>] autoremove_wake_function+0x0/0x50
[ 256.047562] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 256.052165] [<c01a8d71>] handle_mm_fault+0x91/0x690
[ 256.057115] [<c01bac7a>] do_readv_writev+0x13a/0x1b0
[ 256.062153] [<c0317b36>] do_page_fault+0x336/0x750
[ 256.067016] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 256.072744] [<c01bad2c>] vfs_writev+0x3c/0x50
[ 256.077175] [<c0315ecb>] error_code+0x77/0x84
[ 256.081607] =======================
[ 256.085164] Code: 04 82 8b 35 f8 4a 3d c0 8d 2c 38 8d 04 ad 00 00 00 00 29 c1 8b 01 85 c0 74 1b 83 ff 03 74 3f c7 04 24 3
[ 256.104476] EIP: [<c011a966>] _kmap_atomic_prot+0xa6/0x120 SS:ESP 0068:dedf5c80
[ 256.111791] ---[ end trace 6f16dfbea90303ec ]---
[ 256.116389] Fixing recursive fault but reboot is needed!
[ 256.121683] BUG: scheduling while atomic: syslogd/4306/0x00000004
[ 256.127753] Pid: 4306, comm: syslogd Tainted: G D 2.6.24.3xenomaip3 #2
[ 256.134688] [<c0313fed>] schedule+0x53d/0x770
[ 256.139130] [<c0235908>] cfq_free_io_context+0xb8/0xc0
[ 256.144351] [<c0127e39>] do_exit+0x7e9/0x820
[ 256.148705] [<c0124a8b>] printk+0x6b/0xf0
[ 256.152800] [<c0105b67>] die+0x267/0x270
[ 256.156807] [<c0105e81>] do_invalid_op+0x81/0x90
[ 256.161506] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 256.166642] [<c015667c>] __xirq_end+0x0/0x50
[ 256.170997] [<c01569da>] __ipipe_unstall_root+0x4a/0x50
[ 256.176301] [<c012493a>] vprintk+0x2ca/0x3b0
[ 256.180654] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 256.186394] [<c0315ecb>] error_code+0x77/0x84
[ 256.190836] [<c01100d8>] generic_set_all+0x198/0x2e0
[ 256.195882] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 256.201016] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 256.205628] [<c01a7611>] unmap_vmas+0x181/0x5a0
[ 256.210243] [<c01aae6d>] exit_mmap+0x7d/0x120
[ 256.214684] [<c0121c40>] mmput+0x30/0xe0
[ 256.218691] [<c012779c>] do_exit+0x14c/0x820
[ 256.223046] [<c0105b67>] die+0x267/0x270
[ 256.227053] [<c0105e81>] do_invalid_op+0x81/0x90
[ 256.231754] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 256.236887] [<c015667c>] __xirq_end+0x0/0x50
[ 256.241242] [<c01569da>] __ipipe_unstall_root+0x4a/0x50
[ 256.246548] [<c012493a>] vprintk+0x2ca/0x3b0
[ 256.250902] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 256.256640] [<c0315ecb>] error_code+0x77/0x84
[ 256.261080] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 256.266212] [<c01388c0>] autoremove_wake_function+0x0/0x50
[ 256.271778] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 256.276391] [<c01a8d71>] handle_mm_fault+0x91/0x690
[ 256.281351] [<c01bac7a>] do_readv_writev+0x13a/0x1b0
[ 256.286397] [<c0317b36>] do_page_fault+0x336/0x750
[ 256.291273] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 256.297011] [<c01bad2c>] vfs_writev+0x3c/0x50
[ 256.301450] [<c0315ecb>] error_code+0x77/0x84
[ 256.305892] =======================
[ 308.807005] type is NOT KM_USER0
[ 308.810230] ------------[ cut here ]------------
[ 308.814826] kernel BUG at arch/x86/mm/highmem_32.c:56!
[ 308.819938] invalid opcode: 0000 [#4] PREEMPT SMP
[ 308.824733] Modules linked in: rfcomm l2cap bluetooth ppdev sbp2 ipv6 parport_pc lp parport pcspkr iTCO_wdt iTCO_vendor_se
[ 308.851890]
[ 308.853371] Pid: 4944, comm: gdmgreeter Tainted: G D (2.6.24.3xenomaip3 #2)
[ 308.860734] EIP: 0060:[<c011a966>] EFLAGS: 00210296 CPU: 0
[ 308.866196] EIP is at _kmap_atomic_prot+0xa6/0x120
[ 308.870963] EAX: 00000027 EBX: c2b21ca0 ECX: 02bcf000 EDX: 00000000
[ 308.877200] ESI: fffff000 EDI: 00000007 EBP: 00000007 ESP: df69debc
[ 308.883439] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 308.888813] Process gdmgreeter (pid: 4944, ti=df69c000 task=decc06a0 task.ti=df69c000)<0>
[ 308.896521] I-pipe domain Linux
[ 308.899913] Stack: c039a438 f7c1d000 c01c4888 00000a21 c03a1f9e 00000163 00000a21 dfb9f56c
[ 308.908304] c044a720 df9b6200 c011a9fa c03a1f9e 00000a21 00000001 c01a8d71 00000a21
[ 308.916694] 0100809b 000081a4 00000001 00000000 08354e98 dfb9f56c df9b6200 df9f7080
[ 308.925085] Call Trace:
[ 308.927697] [<c01c4888>] do_path_lookup+0x78/0x1c0
[ 308.932562] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 308.937167] [<c01a8d71>] handle_mm_fault+0x91/0x690
[ 308.942118] [<c0317b36>] do_page_fault+0x336/0x750
[ 308.946984] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 308.952714] [<c0315ecb>] error_code+0x77/0x84
[ 308.957147] =======================
[ 308.960703] Code: 04 82 8b 35 f8 4a 3d c0 8d 2c 38 8d 04 ad 00 00 00 00 29 c1 8b 01 85 c0 74 1b 83 ff 03 74 3f c7 04 24 3
[ 308.980015] EIP: [<c011a966>] _kmap_atomic_prot+0xa6/0x120 SS:ESP 0068:df69debc
[ 308.987334] ---[ end trace 6f16dfbea90303ec ]---
[ 308.991933] note: gdmgreeter[4944] exited with preempt_count 1
[ 308.997758] type is NOT KM_USER0
[ 309.000975] ------------[ cut here ]------------
[ 309.005570] kernel BUG at arch/x86/mm/highmem_32.c:56!
[ 309.010683] invalid opcode: 0000 [#5] PREEMPT SMP
[ 309.015476] Modules linked in: rfcomm l2cap bluetooth ppdev sbp2 ipv6 parport_pc lp parport pcspkr iTCO_wdt iTCO_vendor_se
[ 309.042627]
[ 309.044107] Pid: 4944, comm: gdmgreeter Tainted: G D (2.6.24.3xenomaip3 #2)
[ 309.051469] EIP: 0060:[<c011a966>] EFLAGS: 00210282 CPU: 0
[ 309.056929] EIP is at _kmap_atomic_prot+0xa6/0x120
[ 309.061696] EAX: 00000027 EBX: c2b21ca0 ECX: 02bcf000 EDX: 00000000
[ 309.067933] ESI: fffff000 EDI: 00000007 EBP: 00000007 ESP: df69dc80
[ 309.074171] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 309.079544] Process gdmgreeter (pid: 4944, ti=df69c000 task=decc06a0 task.ti=df69c000)<0>
[ 309.087252] I-pipe domain Linux
[ 309.090644] Stack: c039a438 c044a5e0 c0449280 000002bc c03a1f9e 00000163 000002bc dfb9f668
[ 309.099031] 08048000 00000000 c011a9fa c03a1f9e 000002bc 00000000 c01a7611 000002bc
[ 309.107418] 08075fff 00000000 dfb9f668 df69dd28 00000000 00000001 08076000 df9f7080
[ 309.115807] Call Trace:
[ 309.118421] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 309.123026] [<c01a7611>] unmap_vmas+0x181/0x5a0
[ 309.127631] [<c01aae6d>] exit_mmap+0x7d/0x120
[ 309.132062] [<c0121c40>] mmput+0x30/0xe0
[ 309.136061] [<c012779c>] do_exit+0x14c/0x820
[ 309.140406] [<c0105b67>] die+0x267/0x270
[ 309.144405] [<c0105e81>] do_invalid_op+0x81/0x90
[ 309.149095] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 309.154217] [<c013007b>] kill_pgrp+0xb/0x20
[ 309.158474] [<c015667c>] __xirq_end+0x0/0x50
[ 309.162817] [<c0110060>] generic_set_all+0x120/0x2e0
[ 309.167856] [<c01569da>] __ipipe_unstall_root+0x4a/0x50
[ 309.173150] [<c012493a>] vprintk+0x2ca/0x3b0
[ 309.177496] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 309.183227] [<c0315ecb>] error_code+0x77/0x84
[ 309.187659] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 309.192782] [<c01c4888>] do_path_lookup+0x78/0x1c0
[ 309.197646] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 309.202250] [<c01a8d71>] handle_mm_fault+0x91/0x690
[ 309.207201] [<c0317b36>] do_page_fault+0x336/0x750
[ 309.212067] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 309.217798] [<c0315ecb>] error_code+0x77/0x84
[ 309.222230] =======================
[ 309.225786] Code: 04 82 8b 35 f8 4a 3d c0 8d 2c 38 8d 04 ad 00 00 00 00 29 c1 8b 01 85 c0 74 1b 83 ff 03 74 3f c7 04 24 3
[ 309.245098] EIP: [<c011a966>] _kmap_atomic_prot+0xa6/0x120 SS:ESP 0068:df69dc80
[ 309.252414] ---[ end trace 6f16dfbea90303ec ]---
[ 309.257013] Fixing recursive fault but reboot is needed!
[ 309.262306] BUG: scheduling while atomic: gdmgreeter/4944/0x00000004
[ 309.268635] Pid: 4944, comm: gdmgreeter Tainted: G D 2.6.24.3xenomaip3 #2
[ 309.275830] [<c0313fed>] schedule+0x53d/0x770
[ 309.280272] [<c0235908>] cfq_free_io_context+0xb8/0xc0
[ 309.285492] [<c0127e39>] do_exit+0x7e9/0x820
[ 309.289847] [<c0124a8b>] printk+0x6b/0xf0
[ 309.293943] [<c0105b67>] die+0x267/0x270
[ 309.297951] [<c0105e81>] do_invalid_op+0x81/0x90
[ 309.302651] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 309.307784] [<c015667c>] __xirq_end+0x0/0x50
[ 309.312138] [<c01569da>] __ipipe_unstall_root+0x4a/0x50
[ 309.317457] [<c012493a>] vprintk+0x2ca/0x3b0
[ 309.321812] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 309.327550] [<c0315ecb>] error_code+0x77/0x84
[ 309.331992] [<c01100d8>] generic_set_all+0x198/0x2e0
[ 309.337037] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 309.342171] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 309.346784] [<c01a7611>] unmap_vmas+0x181/0x5a0
[ 309.351399] [<c01aae6d>] exit_mmap+0x7d/0x120
[ 309.355841] [<c0121c40>] mmput+0x30/0xe0
[ 309.359849] [<c012779c>] do_exit+0x14c/0x820
[ 309.364204] [<c0105b67>] die+0x267/0x270
[ 309.368211] [<c0105e81>] do_invalid_op+0x81/0x90
[ 309.372911] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 309.378044] [<c013007b>] kill_pgrp+0xb/0x20
[ 309.382311] [<c015667c>] __xirq_end+0x0/0x50
[ 309.386664] [<c0110060>] generic_set_all+0x120/0x2e0
[ 309.391712] [<c01569da>] __ipipe_unstall_root+0x4a/0x50
[ 309.397016] [<c012493a>] vprintk+0x2ca/0x3b0
[ 309.401371] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 309.407109] [<c0315ecb>] error_code+0x77/0x84
[ 309.411550] [<c011a966>] _kmap_atomic_prot+0xa6/0x120
[ 309.416682] [<c01c4888>] do_path_lookup+0x78/0x1c0
[ 309.421556] [<c011a9fa>] _kmap_atomic+0x1a/0x20
[ 309.426170] [<c01a8d71>] handle_mm_fault+0x91/0x690
[ 309.431130] [<c0317b36>] do_page_fault+0x336/0x750
[ 309.436003] [<c011705d>] __ipipe_handle_exception+0xbd/0x220
[ 309.441742] [<c0315ecb>] error_code+0x77/0x84
[ 309.446226] =======================
next prev parent reply other threads:[~2008-04-01 0:00 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-28 21:06 [Xenomai-core] Kernel crash with Xenomai (caused by fork?) Tomas Kalibera
2008-03-28 23:25 ` Gilles Chanteperdrix
2008-03-29 0:08 ` Gilles Chanteperdrix
2008-03-29 1:36 ` Tomas Kalibera
2008-03-29 20:17 ` Gilles Chanteperdrix
2008-03-30 20:27 ` Gilles Chanteperdrix
2008-03-31 4:04 ` Tomas Kalibera
2008-03-31 20:21 ` Gilles Chanteperdrix
2008-03-31 20:30 ` Gilles Chanteperdrix
2008-04-01 0:00 ` Tomas Kalibera [this message]
2008-04-01 5:52 ` Gilles Chanteperdrix
2008-04-01 7:59 ` Gilles Chanteperdrix
2008-04-01 13:54 ` Tomas Kalibera
2008-04-01 14:03 ` Gilles Chanteperdrix
2008-04-01 15:45 ` Tomas Kalibera
2008-04-01 15:58 ` Gilles Chanteperdrix
2008-04-01 21:23 ` Tomas Kalibera
2008-04-02 8:42 ` Gilles Chanteperdrix
2008-04-02 15:02 ` Tomas Kalibera
2008-04-02 15:07 ` Gilles Chanteperdrix
2008-04-02 18:14 ` Tomas Kalibera
2008-04-02 19:38 ` Tomas Kalibera
2008-04-02 19:42 ` Bill Gatliff
2008-04-02 19:44 ` Gilles Chanteperdrix
2008-04-02 21:45 ` Tomas Kalibera
2008-04-02 22:34 ` Gilles Chanteperdrix
2008-04-02 22:53 ` Gilles Chanteperdrix
2008-04-03 17:31 ` Tomas Kalibera
2008-04-05 4:32 ` Tomas Kalibera
2008-04-05 9:10 ` Jan Kiszka
2008-04-02 23:46 ` Tomas Kalibera
2008-04-03 9:04 ` Gilles Chanteperdrix
2008-04-02 19:52 ` Gilles Chanteperdrix
2008-04-02 21:37 ` Tomas Kalibera
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