Carsten Menke wrote:
using 2.4.12.4 and disabling Preemption makes the problem even worse
now c2faxsend is marked defunct and could not be killed producing this stack trace:
Aug 12 19:40:45 localhost kernel: c011ba8a
Aug 12 19:40:45 localhost kernel: SMP
Aug 12 19:40:45 localhost kernel: Modules linked in: ipv6 piix ide_generic b1pci
b1dma b1 n_hdlc tun capi capifs kernelcapi evdev pcspkr parpo
Aug 12 19:40:45 localhost kernel: CPU: 1
Aug 12 19:40:45 localhost kernel: EIP: 0060:[mm_release+58/144] Not
tainted VLI
Aug 12 19:40:45 localhost kernel: EFLAGS: 00010282 (2.6.12.4)
Aug 12 19:40:45 localhost kernel: EIP is at mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: eax: 00000000 ebx: df96f020 ecx: b7c3abf8
edx: df96f000
Aug 12 19:40:45 localhost kernel: esi: 00000000 edi: df96f020 ebp: 0000000b
esp: dd05a7c8
Aug 12 19:40:45 localhost kernel: ds: 007b es: 007b ss: 0068
Aug 12 19:40:45 localhost kernel: Process c2faxsend (pid: 3245,
threadinfo=dd05a000 task=df96f020)
Aug 12 19:40:45 localhost kernel: Stack: c0448388 c04890c0 00000001 c0122e46
c0448388 0000000a 00000000 df96f020
Aug 12 19:40:45 localhost kernel: c011fb1a df96f020 00000000 dd05a000
df96f020 df96f4cc 0000000b c012053f
Aug 12 19:40:45 localhost kernel: df96f020 c037a677 00000000 c03c0c0c
00000000 dd05a000 dd05a944 c037a677
Aug 12 19:40:45 localhost kernel: Call Trace:
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [load_balance+359/384]
load_balance+0x167/0x180
Aug 12 19:40:45 localhost kernel: [__mod_timer+249/320] __mod_timer+0xf9/0x140
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465] do_page_fault+0x0/0x5b9
Aug 12 19:40:45 localhost kernel: [error_code+79/84] error_code+0x4f/0x54
Aug 12 19:40:45 localhost kernel: [mm_release+58/144] mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [load_balance+359/384]
load_balance+0x167/0x180
Aug 12 19:40:45 localhost kernel: [__mod_timer+249/320] __mod_timer+0xf9/0x140
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465]
do_page_fault+0x0/0x5b9
Aug 12 19:40:45 localhost kernel: [error_code+79/84] error_code+0x4f/0x54
Aug 12 19:40:45 localhost kernel: [mm_release+58/144] mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [load_balance+359/384]
load_balance+0x167/0x180
Aug 12 19:40:45 localhost kernel: [__mod_timer+249/320] __mod_timer+0xf9/0x140
Aug 12 19:40:45 localhost kernel: [neigh_periodic_timer+232/384]
neigh_periodic_timer+0xe8/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465] do_page_fault+0x0/0x5b9
Aug 12 19:40:45 localhost kernel: [error_code+79/84] error_code+0x4f/0x54
Aug 12 19:40:45 localhost kernel: [mm_release+58/144] mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [load_balance+359/384]
load_balance+0x167/0x180
Aug 12 19:40:45 localhost kernel: [__mod_timer+249/320] __mod_timer+0xf9/0x140
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465]
do_page_fault+0x0/0x5b9
Aug 12 19:40:45 localhost kernel: [error_code+79/84] error_code+0x4f/0x54
Aug 12 19:40:45 localhost kernel: [mm_release+58/144] mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [load_balance+359/384]
load_balance+0x167/0x180
Aug 12 19:40:45 localhost kernel: [__mod_timer+249/320] __mod_timer+0xf9/0x140
Aug 12 19:40:45 localhost kernel: [__mod_timer+249/320] __mod_timer+0xf9/0x140
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465]
do_page_fault+0x0/0x5b9
Aug 12 19:40:45 localhost kernel: [error_code+79/84] error_code+0x4f/0x54
Aug 12 19:40:45 localhost kernel: [mm_release+58/144] mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [recalc_task_prio+136/336]
recalc_task_prio+0x88/0x150
Aug 12 19:40:45 localhost kernel: [activate_task+144/176] activate_task+0x90/0xb0
Aug 12 19:40:45 localhost kernel: [try_to_wake_up+658/736]
try_to_wake_up+0x292/0x2e0
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465] do_page_fault+0x0/0x5b9
[ .. ]
Aug 12 19:40:45 localhost kernel: [mm_release+58/144] mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [__wake_up_common+65/112]
__wake_up_common+0x41/0x70
Aug 12 19:40:45 localhost kernel: [__wake_up+62/96] __wake_up+0x3e/0x60
Aug 12 19:40:45 localhost kernel: [__queue_work+83/112] __queue_work+0x53/0x70
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465] do_page_fault+0x0/0x5b9
Aug 12 19:40:45 localhost kernel: [error_code+79/84] error_code+0x4f/0x54
Aug 12 19:40:45 localhost kernel: [mm_release+58/144] mm_release+0x3a/0x90
Aug 12 19:40:45 localhost kernel: [__do_softirq+214/240] __do_softirq+0xd6/0xf0
Aug 12 19:40:45 localhost kernel: [exit_mm+26/304] exit_mm+0x1a/0x130
Aug 12 19:40:45 localhost kernel: [do_exit+191/832] do_exit+0xbf/0x340
Aug 12 19:40:45 localhost kernel: [die+380/384] die+0x17c/0x180
Aug 12 19:40:45 localhost kernel: [do_page_fault+739/1465]
do_page_fault+0x2e3/0x5b9
Aug 12 19:40:45 localhost kernel: [__wake_up+62/96] __wake_up+0x3e/0x60
Aug 12 19:40:45 localhost kernel: [release_console_sem+185/192]
release_console_sem+0xb9/0xc0
Aug 12 19:40:45 localhost kernel: [vprintk+413/592] vprintk+0x19d/0x250
Aug 12 19:40:45 localhost kernel: [xfs_log_move_tail+70/416]
xfs_log_move_tail+0x46/0x1a0
Aug 12 19:40:45 localhost kernel: [do_page_fault+0/1465] do_page_fault+0x0/0x5b9
Aug 12 19:40:45 localhost kernel: [error_code+79/84] error_code+0x4f/0x54
Aug 12 19:40:45 localhost kernel: [pg0+541760898/1068758016]
capilib_release_appl+0x52/0x70 [kernelcapi]
Aug 12 19:40:45 localhost kernel: [pg0+541727529/1068758016]
b1dma_release_appl+0x29/0xe0 [b1dma]
Aug 12 19:40:45 localhost kernel: [pg0+541749418/1068758016]
release_appl+0x1a/0x60 [kernelcapi]
Aug 12 19:40:45 localhost kernel: [pg0+541752528/1068758016]
capi20_release+0xc0/0xd0 [kernelcapi]
Aug 12 19:40:45 localhost kernel: [pg0+541537843/1068758016]
capidev_free+0x93/0xa0 [capi]
Aug 12 19:40:45 localhost kernel: [pg0+541542169/1068758016]
capi_release+0x19/0x30 [capi]
Aug 12 19:40:45 localhost kernel: [__fput+270/288] __fput+0x10e/0x120
Aug 12 19:40:45 localhost kernel: [filp_close+89/144] filp_close+0x59/0x90
Aug 12 19:40:45 localhost kernel: [put_files_struct+100/208]
put_files_struct+0x64/0xd0
Aug 12 19:40:45 localhost kernel: [do_exit+238/832] do_exit+0xee/0x340
Aug 12 19:40:45 localhost kernel: [do_group_exit+64/176] do_group_exit+0x40/0xb0
Aug 12 19:40:45 localhost kernel: [get_signal_to_deliver+560/832]
get_signal_to_deliver+0x230/0x340
Aug 12 19:40:45 localhost kernel: [do_signal+155/304] do_signal+0x9b/0x130
Aug 12 19:40:45 localhost kernel: [wake_up_state+24/32] wake_up_state+0x18/0x20
Aug 12 19:40:45 localhost kernel: [signal_wake_up+46/80] signal_wake_up+0x2e/0x50
Aug 12 19:40:45 localhost kernel: [force_sig_info+113/176] force_sig_info+0x71/0xb0
Aug 12 19:40:45 localhost kernel: [force_sig+32/48] force_sig+0x20/0x30
Aug 12 19:40:45 localhost kernel: [do_general_protection+135/416]
do_general_protection+0x87/0x1a0
Aug 12 19:40:45 localhost kernel: [sys_gettimeofday+60/144]
sys_gettimeofday+0x3c/0x90
Aug 12 19:40:45 localhost kernel: [do_general_protection+0/416]
do_general_protection+0x0/0x1a0
Aug 12 19:40:45 localhost kernel: [do_notify_resume+55/60]
do_notify_resume+0x37/0x3c
Aug 12 19:40:45 localhost kernel: [work_notifysig+19/21] work_notifysig+0x13/0x15
Aug 12 19:40:45 localhost kernel: Code: 31 f6 8b 83 0c 01 00 00 8e e6 8e ee 85
c0 74 0d 31 d2 89 93 0c 01 00 00 e8 44 dc ff ff 8b 8b 14 01 00 00 85 c9 74 0a 8b
44 24 28 <8b> 40 20 48 7f 10 8b 5c 24 18 8b 74 24 1c 83 c4 20 c3 8d 74 26
tual address 00000020
Aug 12 19:40:45 localhost kernel: <1>Unable to handle kernel NULL pointer
dereference at virtual address 00000020
--
"There are two major products that came out of Berkeley: LSD and UNIX.
We don't believe this to be a coincidence." --Jeremy S. Anderson
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