[RFC] PCMCIA locking updates for 2.6.34

[Komuro]

Hi,

Same result as Wolfram.

 
> "echo d > /proc/sysrq-trigger"

No output from sysrq-trigger.



pcmcia 0.0: pcmcia: registering new device pcmcia0.0
pcmcia 0.1: pcmcia: registering new device pcmcia0.1
INFO: task modprobe:2191 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
modprobe      D 0000001c     0  2191   2187 0x00000080
 f45f1dd8 00000086 36e648c7 0000001c f518c2f4 c0922ec0 c091e394 c0922ec0
 f518c2f4 c0922ec0 c0922ec0 f45f0000 fffd451a c3a84394 00000001 00000000
 0000001c f518c060 000000d8 00000000 00000000 00000000 f6a1f178 f6a1f170
Call Trace:
 [<c06c880c>] __mutex_lock_common+0x109/0x158
 [<c06644bf>] ? alloc_netdev_mq+0x19e/0x1bf
 [<c06c8872>] __mutex_lock_slowpath+0x17/0x1a
 [<c06c8961>] ? mutex_lock+0x30/0x3e
 [<c06c8961>] mutex_lock+0x30/0x3e
 [<f88b8f9d>] pcmcia_request_io+0x23/0xc9 [pcmcia]
 [<fb62d879>] tc589_probe+0xfb/0x2eb [3c589_cs]
 [<f88b78b3>] pcmcia_device_probe+0x121/0x1a9 [pcmcia]
 [<c05d5100>] ? device_release_driver+0xd/0x28
 [<c05d526a>] driver_probe_device+0x7e/0xf2
 [<c05d5326>] __driver_attach+0x48/0x64
 [<c05d4a62>] bus_for_each_dev+0x42/0x6c
 [<c05d5134>] driver_attach+0x19/0x1b
 [<c05d52de>] ? __driver_attach+0x0/0x64
 [<c05d4e34>] bus_add_driver+0x94/0x1c4
 [<c054f8e4>] ? kset_find_obj+0x12/0x4f
 [<c05d557b>] driver_register+0x7e/0xe5
 [<f88b8172>] pcmcia_register_driver+0xc2/0xf2 [pcmcia]
 [<f80a7000>] ? init_tc589+0x0/0xf [3c589_cs]
 [<f80a700d>] init_tc589+0xd/0xf [3c589_cs]
 [<c040305b>] do_one_initcall+0x51/0x144
 [<c0469d6b>] sys_init_module+0xac/0x1e0
 [<c0408058>] sysenter_do_call+0x12/0x2d
INFO: task modprobe:2192 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
modprobe      D 0000001c     0  2192   2188 0x00000080
 f45f3e64 00000086 3840b4f3 0000001c f5378f74 000026c0 c091e394 c0922ec0
 f5378f74 c0922ec0 c0922ec0 f45f3e5c fffd457c c3a04394 00000000 00000000
 0000001c f5378ce0 f45f3e94 00000000 00000000 00000000 f712fc9c f712fc94
Call Trace:
 [<c06c8382>] schedule_timeout+0x1b/0x95
 [<f88b7e95>] ? pcmcia_devmatch+0x2a3/0x2b4 [pcmcia]
 [<c050c09e>] ? __sysfs_add_one+0x2b/0x7a
 [<c050c437>] ? sysfs_addrm_finish+0x1b/0x93
 [<c050c5f4>] ? sysfs_add_one+0x18/0xc2
 [<c06c8c3b>] __down_common+0x82/0xb9
 [<c06c8cd1>] __down+0x17/0x19
 [<c045a16c>] down+0x27/0x37
 [<c05d530d>] __driver_attach+0x2f/0x64
 [<c05d4a62>] bus_for_each_dev+0x42/0x6c
 [<c05d5134>] driver_attach+0x19/0x1b
 [<c05d52de>] ? __driver_attach+0x0/0x64
 [<c05d4e34>] bus_add_driver+0x94/0x1c4
 [<c054f8f5>] ? kset_find_obj+0x23/0x4f
 [<c05d557b>] driver_register+0x7e/0xe5
 [<f88b8172>] pcmcia_register_driver+0xc2/0xf2 [pcmcia]
 [<fb66d000>] ? init_serial_cs+0x0/0xf [serial_cs]
 [<fb66d00d>] init_serial_cs+0xd/0xf [serial_cs]
 [<c040305b>] do_one_initcall+0x51/0x144
 [<c0469d6b>] sys_init_module+0xac/0x1e0
 [<c0408058>] sysenter_do_call+0x12/0x2d
SysRq : HELP : loglevel(0-9) reBoot Crash terminate-all-tasks(E) memory-full-oom-kill(F) kill-all-tasks(I) thaw-filesystems(J) saK show-backtrace-all-active-cpus(L) show-memory-usage(M) nice-all-RT-tasks(N) powerOff show-registers(P) show-all-timers(Q) unRaw Sync show-task-states(T) Unmount force-fb(V) show-blocked-tasks(W) dump-ftrace-buffer(Z) 
INFO: task modprobe:2191 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
modprobe      D 0000001c     0  2191      1 0x00000080
 f45f1dd8 00000086 36e648c7 0000001c f518c2f4 c0922ec0 c091e394 c0922ec0
 f518c2f4 c0922ec0 c0922ec0 f45f0000 fffd451a c3a84394 00000001 00000000
 0000001c f518c060 000000d8 00000000 00000000 00000000 f6a1f178 f6a1f170
Call Trace:
 [<c06c880c>] __mutex_lock_common+0x109/0x158
 [<c06644bf>] ? alloc_netdev_mq+0x19e/0x1bf
 [<c06c8872>] __mutex_lock_slowpath+0x17/0x1a
 [<c06c8961>] ? mutex_lock+0x30/0x3e
 [<c06c8961>] mutex_lock+0x30/0x3e
 [<f88b8f9d>] pcmcia_request_io+0x23/0xc9 [pcmcia]
 [<fb62d879>] tc589_probe+0xfb/0x2eb [3c589_cs]
 [<f88b78b3>] pcmcia_device_probe+0x121/0x1a9 [pcmcia]
 [<c05d5100>] ? device_release_driver+0xd/0x28
 [<c05d526a>] driver_probe_device+0x7e/0xf2
 [<c05d5326>] __driver_attach+0x48/0x64
 [<c05d4a62>] bus_for_each_dev+0x42/0x6c
 [<c05d5134>] driver_attach+0x19/0x1b
 [<c05d52de>] ? __driver_attach+0x0/0x64
 [<c05d4e34>] bus_add_driver+0x94/0x1c4
 [<c054f8e4>] ? kset_find_obj+0x12/0x4f
 [<c05d557b>] driver_register+0x7e/0xe5
 [<f88b8172>] pcmcia_register_driver+0xc2/0xf2 [pcmcia]
 [<f80a7000>] ? init_tc589+0x0/0xf [3c589_cs]
 [<f80a700d>] init_tc589+0xd/0xf [3c589_cs]
 [<c040305b>] do_one_initcall+0x51/0x144
 [<c0469d6b>] sys_init_module+0xac/0x1e0
 [<c0408058>] sysenter_do_call+0x12/0x2d
INFO: task modprobe:2192 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
modprobe      D 0000001c     0  2192      1 0x00000080
 f45f3e64 00000086 3840b4f3 0000001c f5378f74 000026c0 c091e394 c0922ec0
 f5378f74 c0922ec0 c0922ec0 f45f3e5c fffd457c c3a04394 00000000 00000000
 0000001c f5378ce0 f45f3e94 00000000 00000000 00000000 f712fc9c f712fc94
Call Trace:
 [<c06c8382>] schedule_timeout+0x1b/0x95
 [<f88b7e95>] ? pcmcia_devmatch+0x2a3/0x2b4 [pcmcia]
 [<c050c09e>] ? __sysfs_add_one+0x2b/0x7a
 [<c050c437>] ? sysfs_addrm_finish+0x1b/0x93
 [<c050c5f4>] ? sysfs_add_one+0x18/0xc2
 [<c06c8c3b>] __down_common+0x82/0xb9
 [<c06c8cd1>] __down+0x17/0x19
 [<c045a16c>] down+0x27/0x37
 [<c05d530d>] __driver_attach+0x2f/0x64
 [<c05d4a62>] bus_for_each_dev+0x42/0x6c
 [<c05d5134>] driver_attach+0x19/0x1b
 [<c05d52de>] ? __driver_attach+0x0/0x64
 [<c05d4e34>] bus_add_driver+0x94/0x1c4
 [<c054f8f5>] ? kset_find_obj+0x23/0x4f
 [<c05d557b>] driver_register+0x7e/0xe5
 [<f88b8172>] pcmcia_register_driver+0xc2/0xf2 [pcmcia]
 [<fb66d000>] ? init_serial_cs+0x0/0xf [serial_cs]
 [<fb66d00d>] init_serial_cs+0xd/0xf [serial_cs]
 [<c040305b>] do_one_initcall+0x51/0x144
 [<c0469d6b>] sys_init_module+0xac/0x1e0
 [<c0408058>] sysenter_do_call+0x12/0x2d
SysRq : HELP : loglevel(0-9) reBoot Crash terminate-all-tasks(E) memory-full-oom-kill(F) kill-all-tasks(I) thaw-filesystems(J) saK show-backtrace-all-active-cpus(L) show-memory-usage(M) nice-all-RT-tasks(N) powerOff show-registers(P) show-all-timers(Q) unRaw Sync show-task-states(T) Unmount force-fb(V) show-blocked-tasks(W) dump-ftrace-buffer(Z)