[Bug 90271] New: WARNING: CPU: 0 PID: 225 at kernel/sched/core.c:7303 __might_sleep+0xb8/0xd0()

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=90271

            Bug ID: 90271
           Summary: WARNING: CPU: 0 PID: 225 at kernel/sched/core.c:7303
                    __might_sleep+0xb8/0xd0()
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.19.0-rc1
          Hardware: i386
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: PCMCIA
          Assignee: linux-pcmcia at lists.infradead.org
          Reporter: bugzilla at colorremedies.com
        Regression: No

Created attachment 161741
  --> https://bugzilla.kernel.org/attachment.cgi?id=161741&action=edit
dmesg

This is a regression, it doesn't happen with kernel-debug-3.18.1-2.fc22.i686.
3.19.0 kernel build method listed below.

Problem:

Two processes are using 100% CPU.

 PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND
 227 root      20   0       0      0      0 R 49.7  0.0   2:40.84 pccardd       
 232 root      20   0       0      0      0 R 49.7  0.0   2:40.59 pccardd   


And I get this trace. Attaching complete dmesg, and lspci.


[    5.958090] ------------[ cut here ]------------
[    5.958167] WARNING: CPU: 0 PID: 227 at kernel/sched/core.c:7303
__might_sleep+0xb8/0xd0()
[    5.958269] do not call blocking ops when !TASK_RUNNING; state=1 set at
[<c08e9c30>] pccardd+0xc0/0x450
[    5.958367] Modules linked in: ttm drm ptp ata_generic yenta_socket
pata_acpi pps_core uas usb_storage
[    5.958690] CPU: 0 PID: 227 Comm: pccardd Not tainted 3.19.0-rc1cmbtrfsdebug
#1
[    5.958785] Hardware name: Dell Computer Corporation Latitude D600          
        /0G5152, BIOS A16 06/29/2005
[    5.958884]  00000000 c5084202 00000000 f49abe08 c0b3e64f f49abe4c f49abe3c
c045e13b
[    5.959180]  c0d169e0 f49abe6c 000000e3 c0d23cb4 00001c87 c0487ab8 00001c87
c0487ab8
[    5.959447]  00000001 f533c230 f533c230 f49abe58 c045e1ae 00000009 f49abe4c
c0d169e0
[    5.959715] Call Trace:
[    5.959779]  [<c0b3e64f>] dump_stack+0x48/0x60
[    5.959844]  [<c045e13b>] warn_slowpath_common+0x8b/0xc0
[    5.959907]  [<c0487ab8>] ? __might_sleep+0xb8/0xd0
[    5.959969]  [<c0487ab8>] ? __might_sleep+0xb8/0xd0
[    5.960051]  [<c045e1ae>] warn_slowpath_fmt+0x3e/0x60
[    5.960114]  [<c0487ab8>] __might_sleep+0xb8/0xd0
[    5.960176]  [<c08e9c30>] ? pccardd+0xc0/0x450
[    5.960238]  [<c08e9c30>] ? pccardd+0xc0/0x450
[    5.960303]  [<c0b42f1e>] mutex_lock_nested+0x2e/0x3e0
[    5.960368]  [<c04b331c>] ? trace_hardirqs_on_caller+0x13c/0x1e0
[    5.960433]  [<c04b33cb>] ? trace_hardirqs_on+0xb/0x10
[    5.960496]  [<c08e9c8e>] pccardd+0x11e/0x450
[    5.960559]  [<c08e9b70>] ? pcmcia_socket_dev_complete+0x40/0x40
[    5.960626]  [<c048022d>] kthread+0xcd/0xe0
[    5.960688]  [<c04b33cb>] ? trace_hardirqs_on+0xb/0x10
[    5.960752]  [<c0b47401>] ret_from_kernel_thread+0x21/0x30
[    5.960816]  [<c0480160>] ? kthread_create_on_node+0x180/0x180
[    5.960879] ---[ end trace 232873d0de401016 ]---

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