Date: Wed, 21 Aug 2013 09:48:46 +0200 From: Johan Henselmans <johan@netsense.nl> To: Martin Laabs <mailinglists@martinlaabs.de> Cc: freebsd-arm@freebsd.org Subject: Re: Debug stalling Raspberry Message-ID: <81E82602-C147-429A-96BB-7DD7B7AAA38E@netsense.nl> In-Reply-To: <5213CD1A.7000506@martinlaabs.de> References: <5213CD1A.7000506@martinlaabs.de>
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On 20 aug. 2013, at 22:10, Martin Laabs <mailinglists@martinlaabs.de> = wrote: > Hi, >=20 > currently I run r254441 on a raspberry pi b and every time I run = portsnap > the cpu stopps running. > This happens during the snapshot verify while around 25k files are = gunziped > and sha256ed (file after file of cause). I can reproduce this but the = Pi > does not hang reproducible at the same file but the last processed = file is > different from try to try. I have exactly the same experience on BBB, also with portsnap. The only = way I could get portsnap to finish is by locating /var/db/portsnap on = NFS.=20 I am still testing what is causing it. I have used class 4 and class 10 = cards, both freeze. =20 I have the serial console connected to screen, and nothing is displayed = during the freeze.=20 I do have an error about the keyboard during startup, as Tim mention = that pressing the keyboard would continue the BBB. I have not tested = that, as I do not see a console on my HDMI monitor on the BBB.=20 (r254571) =3D=3D=3D=3D=3D=3D=3D=3D=3D link_elf: symbol genkbd_get_fkeystr undefined link_elf: symbol genkbd_get_fkeystr undefined aintc0: Spurious interrupt detected (0xffffffff) =3D=3D=3D=3D=3D=3D=3D=3D=3D Another message I got while starting up: =3D=3D=3D=3D=3D=3D=3D=3D=3D lock order reversal: 1st 0xc09aa0bc pmap (pmap) @ /usr/src/sys/arm/arm/pmap-v6.c:2967 2nd 0xc07c5fc0 kmem vm object (kmem vm object) @ = /usr/src/sys/vm/vm_kern.c:344 KDB: stack backtrace: db_trace_self() at db_trace_self pc =3D 0xc05293f8 lr =3D 0xc022db88 = (db_trace_self_wrapper+0x30) sp =3D 0xc2ab4930 fp =3D 0xc2ab4a48 r10 =3D 0xc09aa0bc db_trace_self_wrapper() at db_trace_self_wrapper+0x30 pc =3D 0xc022db88 lr =3D 0xc038d150 (kdb_backtrace+0x38) sp =3D 0xc2ab4a50 fp =3D 0xc2ab4a58 r4 =3D 0xc065ed14 r5 =3D 0xc05a6f1c r6 =3D 0xc058a3b3 r7 =3D 0xc05abd59 kdb_backtrace() at kdb_backtrace+0x38 pc =3D 0xc038d150 lr =3D 0xc03a72c0 (witness_checkorder+0xddc) sp =3D 0xc2ab4a60 fp =3D 0xc2ab4ab0 r4 =3D 0xc05a7fd4 witness_checkorder() at witness_checkorder+0xddc pc =3D 0xc03a72c0 lr =3D 0xc0355768 (_rw_wlock_cookie+0x7c) sp =3D 0xc2ab4ab8 fp =3D 0xc2ab4ae0 r4 =3D 0x00000158 r5 =3D 0xc05a6f19 r6 =3D 0xc07c5fd0 r7 =3D 0xc07c5fc0 r8 =3D 0xc07c5fc0 r9 =3D 0x00000101 r10 =3D 0x00000000 _rw_wlock_cookie() at _rw_wlock_cookie+0x7c pc =3D 0xc0355768 lr =3D 0xc0504794 (kmem_back+0x68) sp =3D 0xc2ab4ae8 fp =3D 0xc2ab4b28 r4 =3D 0xc07c5fc0 r5 =3D 0x00001000 r6 =3D 0x00000000 r7 =3D 0xc07c5fc0 r8 =3D 0x00000101 kmem_back() at kmem_back+0x68 pc =3D 0xc0504794 lr =3D 0xc05046f0 (kmem_malloc+0x6c) sp =3D 0xc2ab4b30 fp =3D 0xc2ab4b48 r4 =3D 0xc0661780 r5 =3D 0x00001000 r6 =3D 0x00000000 r7 =3D 0x00000101 r8 =3D 0xc04fd5e0 r9 =3D 0x00000101 r10 =3D 0x00000000 kmem_malloc() at kmem_malloc+0x6c pc =3D 0xc05046f0 lr =3D 0xc04fd600 (page_alloc+0x20) sp =3D 0xc2ab4b50 fp =3D 0xc2ab4b50 r4 =3D 0xc09d3cc0 r5 =3D 0x00000001 r6 =3D 0x00000000 r7 =3D 0xc09d3cd0 page_alloc() at page_alloc+0x20 pc =3D 0xc04fd600 lr =3D 0xc04fd094 (keg_alloc_slab+0xb4) sp =3D 0xc2ab4b58 fp =3D 0xc2ab4b80 keg_alloc_slab() at keg_alloc_slab+0xb4 pc =3D 0xc04fd094 lr =3D 0xc04fdcd0 (keg_fetch_slab+0x148) sp =3D 0xc2ab4b88 fp =3D 0xc2ab4bc0 r4 =3D 0xc09d3cc0 r5 =3D 0xc09ce408 r6 =3D 0x00000001 r7 =3D 0xc09ce360 r8 =3D 0x00000000 r9 =3D 0xc09ce3f8 r10 =3D 0x00000000 keg_fetch_slab() at keg_fetch_slab+0x148 pc =3D 0xc04fdcd0 lr =3D 0xc04fe0c4 (zone_fetch_slab+0x64) sp =3D 0xc2ab4bc8 fp =3D 0xc2ab4be0 r4 =3D 0x00000001 r5 =3D 0xc09ce360 r6 =3D 0xc09d3cc0 r7 =3D 0xc09d3cc0 r8 =3D 0x00000001 r9 =3D 0xc2ff4fa8 r10 =3D 0x00000002 zone_fetch_slab() at zone_fetch_slab+0x64 pc =3D 0xc04fe0c4 lr =3D 0xc04fe150 (zone_import+0x4c) sp =3D 0xc2ab4be8 fp =3D 0xc2ab4c28 r4 =3D 0xc2ff4fac r5 =3D 0xc05a621a r6 =3D 0x00000001 r7 =3D 0xc09d3cc0 r8 =3D 0x00000000 zone_import() at zone_import+0x4c pc =3D 0xc04fe150 lr =3D 0xc04fbdc0 (uhub2: 4 ports with 4 = removable, self powered uma_zalloc_arg+0x2a0) sp =3D 0xc2ab4c30 fp =3D 0xc2ab4c70 r4 =3D 0x00000001 r5 =3D 0xc05a621a r6 =3D 0xc09b0e0c r7 =3D 0xc04fe104 r8 =3D 0xc09ce360 r9 =3D 0xc09ce418 r10 =3D 0xc09b0e00 uma_zalloc_arg() at uma_zalloc_arg+0x2a0 pc =3D 0xc04fbdc0 lr =3D 0xc053349c = (pmap_alloc_l2_bucket+0x1b4) sp =3D 0xc2ab4c78 fp =3D 0xc2ab4ca0 r4 =3D 0xc05abd56 r5 =3D 0xc09999f8 r6 =3D 0xc09999f4 r7 =3D 0xc07c0de8 r8 =3D 0xc05abd56 r9 =3D 0xc09abaac r10 =3D 0xc09abb38 pmap_alloc_l2_bucket() at pmap_alloc_l2_bucket+0x1b4 pc =3D 0xc053349c lr =3D 0xc0533158 (pmap_copy+0x158) sp =3D 0xc2ab4ca8 fp =3D 0xc2ab4ce0 r4 =3D 0xc09aba9c r5 =3D 0x20049000 r6 =3D 0xc05abd56 r7 =3D 0x2002e000 r8 =3D 0x0001b000 r9 =3D 0xc09964b8 r10 =3D 0x0001b000 pmap_copy() at pmap_copy+0x158 pc =3D 0xc0533158 lr =3D 0xc050a660 (vmspace_fork+0x790) sp =3D 0xc2ab4ce8 fp =3D 0xc2ab4d20 r4 =3D 0xc09aa000 r5 =3D 0x00000000 r6 =3D 0x2002e000 r7 =3D 0xc099c500 r8 =3D 0xc09ab9e0 r9 =3D 0xc099df50 r10 =3D 0x0001b000 vmspace_fork() at vmspace_fork+0x790 pc =3D 0xc050a660 lr =3D 0xc0327004 (fork1+0x1a4) sp =3D 0xc2ab4d28 fp =3D 0xc2ab4d98 r4 =3D 0xc2ffc960 r5 =3D 0x00000000 r6 =3D 0xc2fc5000 r7 =3D 0x0000000c r8 =3D 0xc2fc5320 r9 =3D 0xc2ffcc80 r10 =3D 0xc2ab4dac fork1() at fork1+0x1a4 pc =3D 0xc0327004 lr =3D 0xc0326e40 (sys_fork+0x24) sp =3D 0xc2ab4da0 fp =3D 0xc2ab4db8 r4 =3D 0xc2ffcc80 r5 =3D 0x00000000 r6 =3D 0x00000000 r7 =3D 0x00000000 r8 =3D 0xc2ab4e10 r9 =3D 0xc2fc5320 r10 =3D 0x00000000 sys_fork() at sys_fork+0x24 pc =3D 0xc0326e40 lr =3D 0xc0538ee4 (swi_handler+0x284) sp =3D 0xc2ab4dc0 fp =3D 0xc2ab4e58 r4 =3D 0xc2ffcc80 r5 =3D 0x00000000 swi_handler() at swi_handler+0x284 pc =3D 0xc0538ee4 lr =3D 0xc052aa54 (swi_entry+0x2c) sp =3D 0xc2ab4e60 fp =3D 0xbfffec18 r4 =3D 0x00030998 r5 =3D 0x2080d020 r6 =3D 0x00000000 r7 =3D 0x00000002 r8 =3D 0x00000003 r9 =3D 0x2080d020 swi_entry() at swi_entry+0x2c pc =3D 0xc052aa54 lr =3D 0xc052aa54 (swi_entry+0x2c) sp =3D 0xc2ab4e60 fp =3D 0xbfffec18 Unable to unwind further =3D=3D=3D=3D=3D=3D=3D=3D=3D >=20 > There is, at least at the video console, no kernel panic. The kernel = itself > still responds to icmp ping packages and echos the keyboard output. = But > everything else does not work. (I know this behavior from disconnected > harddisks containing the kernel/system) > The current consumption also dropps around 100mA. >=20 > It is very interesting that this behavior is not limited to the = internal > MMC card but also occurs when the data is stored external on an usb = stick. >=20 > My question is how to debug this bug since I have no idea where to = start. >> =46rom my experience with bare metal arm systems I would start = connecting a > jtag debugger but I am afraid getting all the symbols mapped correct = to the > gdb. And even if this works - what should I monitor and what should I = test for? > There might be however a more simple solution. So any suggestion is = welcome. >=20 > If you can reproduce this bug I also would be very happy. >=20 > Best regards, > Martin Laabs >=20 > _______________________________________________ > freebsd-arm@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" Johan Henselmans johan@netsense.nl
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