Hi,
getting warning bellow on IGEPv2. Anyone seen it as well before digging
into it?
Thanks,
ladis
=========================================================
[ INFO: possible irq lock inversion dependency detected ]
4.7.0 #1 Not tainted
---------------------------------------------------------
irq/72-48070000/43 just changed the state of lock:
(&(&musb->lock)->rlock){-.....}, at: [<c041ab3c>] omap2430_musb_interrupt+0x10/0xa0
but this lock took another, HARDIRQ-unsafe lock in the past:
(&phy->mutex){+.+...}
and interrupts could create inverse lock ordering between them.
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&phy->mutex);
local_irq_disable();
lock(&(&musb->lock)->rlock);
lock(&phy->mutex);
<Interrupt>
lock(&(&musb->lock)->rlock);
*** DEADLOCK ***
no locks held by irq/72-48070000/43.
the shortest dependencies between 2nd lock and 1st lock:
-> (&phy->mutex){+.+...} ops: 3 {
HARDIRQ-ON-W at:
[<c05b3dbc>] mutex_lock_nested+0x3c/0x30c
[<c033bcdc>] phy_init+0x34/0x9c
[<c041aa18>] omap2430_musb_init+0xbc/0x1d0
[<c0413268>] musb_probe+0x1b4/0x844
[<c0387250>] platform_drv_probe+0x50/0xa0
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c0385170>] deferred_probe_work_func+0x74/0xa8
[<c013e324>] process_one_work+0x224/0x3c8
[<c013ea64>] worker_thread+0x2ac/0x3d4
[<c0142cf4>] kthread+0xd0/0xe4
[<c0107570>] ret_from_fork+0x14/0x24
SOFTIRQ-ON-W at:
[<c05b3dbc>] mutex_lock_nested+0x3c/0x30c
[<c033bcdc>] phy_init+0x34/0x9c
[<c041aa18>] omap2430_musb_init+0xbc/0x1d0
[<c0413268>] musb_probe+0x1b4/0x844
[<c0387250>] platform_drv_probe+0x50/0xa0
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c0385170>] deferred_probe_work_func+0x74/0xa8
[<c013e324>] process_one_work+0x224/0x3c8
[<c013ea64>] worker_thread+0x2ac/0x3d4
[<c0142cf4>] kthread+0xd0/0xe4
[<c0107570>] ret_from_fork+0x14/0x24
INITIAL USE at:
[<c05b3dbc>] mutex_lock_nested+0x3c/0x30c
[<c033bcdc>] phy_init+0x34/0x9c
[<c041aa18>] omap2430_musb_init+0xbc/0x1d0
[<c0413268>] musb_probe+0x1b4/0x844
[<c0387250>] platform_drv_probe+0x50/0xa0
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c0385170>] deferred_probe_work_func+0x74/0xa8
[<c013e324>] process_one_work+0x224/0x3c8
[<c013ea64>] worker_thread+0x2ac/0x3d4
[<c0142cf4>] kthread+0xd0/0xe4
[<c0107570>] ret_from_fork+0x14/0x24
}
... key at: [<c11f87b0>] __key.25212+0x0/0x8
... acquired at:
[<c033b3a0>] phy_power_on+0x58/0xe0
[<c041a8dc>] omap2430_musb_enable+0xf8/0x110
[<c0413bd4>] musb_start+0x104/0x128
[<c04152c4>] musb_hub_control+0x234/0x434
[<c03f09a0>] usb_hcd_submit_urb+0x5cc/0x844
[<c03f225c>] usb_start_wait_urb+0x44/0x12c
[<c03f23e0>] usb_control_msg+0x9c/0xc4
[<c03e6f48>] set_port_feature+0x40/0x48
[<c03ea23c>] hub_power_on+0xa4/0xf8
[<c03ea3ec>] hub_activate+0x15c/0x644
[<c03ed8c4>] hub_probe+0x49c/0xcf0
[<c03f5f60>] usb_probe_interface+0x1ac/0x258
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c03830f8>] device_add+0x414/0x53c
[<c03f43ec>] usb_set_configuration+0x65c/0x6fc
[<c03fd8a4>] generic_probe+0x3c/0x74
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c03830f8>] device_add+0x414/0x53c
[<c03eb300>] usb_new_device+0x2c0/0x408
[<c03ef838>] usb_add_hcd+0x5ec/0x8dc
[<c0419248>] musb_host_setup+0x90/0xac
[<c04136c4>] musb_probe+0x610/0x844
[<c0387250>] platform_drv_probe+0x50/0xa0
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c0385170>] deferred_probe_work_func+0x74/0xa8
[<c013e324>] process_one_work+0x224/0x3c8
[<c013ea64>] worker_thread+0x2ac/0x3d4
[<c0142cf4>] kthread+0xd0/0xe4
[<c0107570>] ret_from_fork+0x14/0x24
-> (&(&musb->lock)->rlock){-.....} ops: 5 {
IN-HARDIRQ-W at:
[<c05b632c>] _raw_spin_lock_irqsave+0x38/0x4c
[<c041ab3c>] omap2430_musb_interrupt+0x10/0xa0
[<c015b740>] handle_irq_event_percpu+0x34/0x134
[<c015b878>] handle_irq_event+0x38/0x5c
[<c015e1b4>] handle_level_irq+0xcc/0x108
[<c015af80>] generic_handle_irq+0x18/0x28
[<c015b228>] __handle_domain_irq+0x80/0xa0
[<c010bb78>] __irq_svc+0x58/0x78
[<c05b64a0>] _raw_spin_unlock_irq+0x28/0x2c
[<c015c32c>] irq_finalize_oneshot+0xcc/0xec
[<c015c378>] irq_thread_fn+0x2c/0x34
[<c015c578>] irq_thread+0xbc/0x198
[<c0142cf4>] kthread+0xd0/0xe4
[<c0107570>] ret_from_fork+0x14/0x24
INITIAL USE at:
[<c05b632c>] _raw_spin_lock_irqsave+0x38/0x4c
[<c04150b4>] musb_hub_control+0x24/0x434
[<c03f09a0>] usb_hcd_submit_urb+0x5cc/0x844
[<c03f225c>] usb_start_wait_urb+0x44/0x12c
[<c03f23e0>] usb_control_msg+0x9c/0xc4
[<c03ed750>] hub_probe+0x328/0xcf0
[<c03f5f60>] usb_probe_interface+0x1ac/0x258
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c03830f8>] device_add+0x414/0x53c
[<c03f43ec>] usb_set_configuration+0x65c/0x6fc
[<c03fd8a4>] generic_probe+0x3c/0x74
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c03830f8>] device_add+0x414/0x53c
[<c03eb300>] usb_new_device+0x2c0/0x408
[<c03ef838>] usb_add_hcd+0x5ec/0x8dc
[<c0419248>] musb_host_setup+0x90/0xac
[<c04136c4>] musb_probe+0x610/0x844
[<c0387250>] platform_drv_probe+0x50/0xa0
[<c0385a0c>] driver_probe_device+0x1cc/0x40c
[<c0383de8>] bus_for_each_drv+0x84/0x94
[<c0385748>] __device_attach+0x8c/0x12c
[<c0384c04>] bus_probe_device+0x28/0x84
[<c0385170>] deferred_probe_work_func+0x74/0xa8
[<c013e324>] process_one_work+0x224/0x3c8
[<c013ea64>] worker_thread+0x2ac/0x3d4
[<c0142cf4>] kthread+0xd0/0xe4
[<c0107570>] ret_from_fork+0x14/0x24
}
... key at: [<c11fa194>] __key.33567+0x0/0x8
... acquired at:
[<c01530b8>] __lock_acquire+0x340/0x17cc
[<c01548e0>] lock_acquire+0x70/0x90
[<c05b632c>] _raw_spin_lock_irqsave+0x38/0x4c
[<c041ab3c>] omap2430_musb_interrupt+0x10/0xa0
[<c015b740>] handle_irq_event_percpu+0x34/0x134
[<c015b878>] handle_irq_event+0x38/0x5c
[<c015e1b4>] handle_level_irq+0xcc/0x108
[<c015af80>] generic_handle_irq+0x18/0x28
[<c015b228>] __handle_domain_irq+0x80/0xa0
[<c010bb78>] __irq_svc+0x58/0x78
[<c05b64a0>] _raw_spin_unlock_irq+0x28/0x2c
[<c015c32c>] irq_finalize_oneshot+0xcc/0xec
[<c015c378>] irq_thread_fn+0x2c/0x34
[<c015c578>] irq_thread+0xbc/0x198
[<c0142cf4>] kthread+0xd0/0xe4
[<c0107570>] ret_from_fork+0x14/0x24
stack backtrace:
CPU: 0 PID: 43 Comm: irq/72-48070000 Not tainted 4.7.0 #1
Hardware name: Generic OMAP36xx (Flattened Device Tree)
[<c010d2f4>] (unwind_backtrace) from [<c010b140>] (show_stack+0x10/0x14)
[<c010b140>] (show_stack) from [<c0196114>] (print_irq_inversion_bug.part.9+0x170/0x1a8)
[<c0196114>] (print_irq_inversion_bug.part.9) from [<c0151b08>] (check_usage_forwards+0x10c/0x140)
[<c0151b08>] (check_usage_forwards) from [<c0152634>] (mark_lock+0x36c/0x618)
[<c0152634>] (mark_lock) from [<c01530b8>] (__lock_acquire+0x340/0x17cc)
[<c01530b8>] (__lock_acquire) from [<c01548e0>] (lock_acquire+0x70/0x90)
[<c01548e0>] (lock_acquire) from [<c05b632c>] (_raw_spin_lock_irqsave+0x38/0x4c)
[<c05b632c>] (_raw_spin_lock_irqsave) from [<c041ab3c>] (omap2430_musb_interrupt+0x10/0xa0)
[<c041ab3c>] (omap2430_musb_interrupt) from [<c015b740>] (handle_irq_event_percpu+0x34/0x134)
[<c015b740>] (handle_irq_event_percpu) from [<c015b878>] (handle_irq_event+0x38/0x5c)
[<c015b878>] (handle_irq_event) from [<c015e1b4>] (handle_level_irq+0xcc/0x108)
[<c015e1b4>] (handle_level_irq) from [<c015af80>] (generic_handle_irq+0x18/0x28)
[<c015af80>] (generic_handle_irq) from [<c015b228>] (__handle_domain_irq+0x80/0xa0)
[<c015b228>] (__handle_domain_irq) from [<c010bb78>] (__irq_svc+0x58/0x78)
[<c010bb78>] (__irq_svc) from [<c05b64a0>] (_raw_spin_unlock_irq+0x28/0x2c)
[<c05b64a0>] (_raw_spin_unlock_irq) from [<c015c32c>] (irq_finalize_oneshot+0xcc/0xec)
[<c015c32c>] (irq_finalize_oneshot) from [<c015c378>] (irq_thread_fn+0x2c/0x34)
[<c015c378>] (irq_thread_fn) from [<c015c578>] (irq_thread+0xbc/0x198)
[<c015c578>] (irq_thread) from [<c0142cf4>] (kthread+0xd0/0xe4)
[<c0142cf4>] (kthread) from [<c0107570>] (ret_from_fork+0x14/0x24)
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