Re: port-arm/51453: mutex_vector_enter: locking against myself on RPi

[coypu%SDF.ORG@localhost]

The following reply was made to PR port-arm/51453; it has been noted by GNATS.

From: coypu%SDF.ORG@localhost
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: port-arm/51453: mutex_vector_enter: locking against myself on RPi
Date: Wed, 31 Aug 2016 08:00:57 +0000

 If it's interesting, I have a second similar panic.
 
 ...
 uhidev0: LITEON Technology USB Keyboard, rev 2.00/1.14, addr 5, iclass
 3/1
 ukbd0 at uhidev0: 8 modifier keys, 6 key codes
 
 Non-emulated page fault with intr_depth > 0
 Fatal kernel mode data abort: 'Translation Fault (S)'
 trapframe: 0x8a22dbb0
 FSR=00000005, FAR=0000003a, spsr=200d0113
 r0 =8be3e348, r1 =8bfa8ac4, r2 =00000000, r3 =00000001
 r4 =8bfa89a4, r5 =8bd8a460, r6 =00000000, r7 =8be3e008
 r8 =8bd89f60, r9 =8bfa8968, r10=8be3e348, r11=8a22dc44
 r12=8a22dc48, ssp=8a22dc00, slr=8020c19c, pc =8020b2c0
 
 panic: lock error: Mutex: mutex_vector_enter: locking against myself:
 lock 0x8be3e040 cpu 0 lwp 0x8b924600
 cpu0: Begin traceback...
 0x8a22d99c: netbsd:db_panic+0xc
 0x8a22d9b4: netbsd:vpanic+0x144
 0x8a22d9cc: netbsd:snprintf
 0x8a22da04: netbsd:lockdebug_abort+0x60
 0x8a22da34: netbsd:dwc2_softintr+0x30
 0x8a22da4c: netbsd:usbd_set_polling+0x44
 0x8a22da6c: netbsd:ukbd_cnpollc+0x54
 0x8a22da84: netbsd:cnpollc+0x44
 0x8a22dafc: netbsd:kdb_trap+0x7c
 0x8a22db24: netbsd:dab_fatal+0x11c
 0x8a22dbac: netbsd:data_abort_handler+0x1d4
 0x8a22dc44: netbsd:address_exception_entry+0x58
 0x8a22dc7c: netbsd:dwc2_hcd_select_transactions+0xb0
 0x8a22dccc: netbsd:dwc2_handle_hcd_intr+0x464
 0x8a22dce4: netbsd:dwc2_interrupt+0x28
 0x8a22dd04: netbsd:dwc2_intr+0xd0
 0x8a22dd24: netbsd:pic_dispatch+0x28
 0x8a22dda4: netbsd:pic_do_pending_ints+0x29c
 0x8a22df24: netbsd:irq_entry+0x60
 0x8a22dfac: netbsd:data_abort_handler+0x188
 cpu0: End traceback...