Date: Thu, 31 Aug 2017 20:30:39 -0700 From: bob prohaska <fbsd@www.zefox.net> To: freebsd-arm@freebsd.org Subject: RPI2, panic: pmap_fault: PT2MAP abort Message-ID: <20170901033039.GA68647@www.zefox.net>
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Has anybody else seen a panic on RPI2 that looks like this? r322942 was building world on r323029. This happened a couple of days ago, the panic repeated on restart but went away using an old kernel and the system built successfully. _That_ system then built r323029, so I thought the problem was solved. A web search on the panic message didn't produce any recent hits, only one from about a year ago. Here's the console output: panic: pmap_fault: PT2MAP abort cpuid = 2 time = 1504234464 KDB: stack backtrace: db_trace_self() at db_trace_self pc = 0xc05a2a04 lr = 0xc0155b6c (db_trace_self_wrapper+0x30) sp = 0xc1e68a98 fp = 0xc1e68bb0 db_trace_self_wrapper() at db_trace_self_wrapper+0x30 pc = 0xc0155b6c lr = 0xc02de7c4 (vpanic+0x158) sp = 0xc1e68bb8 fp = 0xc1e68bd8 r4 = 0x00000100 r5 = 0x00000001 r6 = 0xc0671211 r7 = 0xc086f1f0 vpanic() at vpanic+0x158 pc = 0xc02de7c4 lr = 0xc02de834 (kproc_shutdown) sp = 0xc1e68be0 fp = 0xc1e68be4 r4 = 0x00000000 r5 = 0xbfc909ac r6 = 0xc3cfeb04 r7 = 0x00000007 r8 = 0x00000013 r9 = 0xc09072e0 r10 = 0x00000007 kproc_shutdown() at kproc_shutdown pc = 0xc02de834 lr = 0xc05bcefc (pmap_fault+0x410) sp = 0xc1e68bec fp = 0xc1e68c18 r4 = 0xc02de834 r5 = 0xc1e68bec pmap_fault() at pmap_fault+0x410 pc = 0xc05bcefc lr = 0xc05c12f4 (abort_handler+0xec) sp = 0xc1e68c20 fp = 0xc1e68cb0 r4 = 0x056210c0 r5 = 0xbfc909ac r6 = 0x00000007 r7 = 0x00000007 r8 = 0x00000013 r9 = 0x00000000 r10 = 0xc1e68cb8 abort_handler() at abort_handler+0xec pc = 0xc05c12f4 lr = 0xc05a53dc (exception_exit) sp = 0xc1e68cb8 fp = 0xc1e68d68 r4 = 0x00000001 r5 = 0x2426bff0 r6 = 0xc3cfeb04 r7 = 0x00000006 r8 = 0xc3cfeb14 r9 = 0xc09072e0 r10 = 0x00000806 exception_exit() at exception_exit pc = 0xc05a53dc lr = 0xc02c4478 (__mtx_lock_flags+0x138) sp = 0xc1e68d48 fp = 0xc1e68d68 r0 = 0x000909ac r1 = 0xbfc00000 r2 = 0x00000000 r3 = 0xffffffff r4 = 0x00000001 r5 = 0x2426bff0 r6 = 0xc3cfeb04 r7 = 0x00000006 r8 = 0xc3cfeb14 r9 = 0xc09072e0 r10 = 0x00000806 r12 = 0xc0670a57 pmap_fault() at pmap_fault+0xd0 pc = 0xc05bcbbc lr = 0xc05c12f4 (abort_handler+0xec) sp = 0xc1e68d70 fp = 0xc1e68e00 r4 = 0x056210bf r5 = 0x2426bff0 r6 = 0x00000006 r7 = 0x00000806 r8 = 0x00000010 r9 = 0x00000000 r10 = 0xc1e68e08 abort_handler() at abort_handler+0xec pc = 0xc05c12f4 lr = 0xc05a53dc (exception_exit) sp = 0xc1e68e08 fp = 0xbfbfd108 r4 = 0x2423a008 r5 = 0x2423a024 r6 = 0x00000001 r7 = 0x00000005 r8 = 0x2423a008 r9 = 0x2426bff0 r10 = 0x2423a0f0 exception_exit() at exception_exit pc = 0xc05a53dc lr = 0x034ee574 (0x34ee574) sp = 0xc1e68e98 fp = 0xbfbfd108 r0 = 0x2426bff0 r1 = 0x00000010 r2 = 0x5a5a5a5a r3 = 0x5a5a5a5a r4 = 0x2423a008 r5 = 0x2423a024 r6 = 0x00000001 r7 = 0x00000005 r8 = 0x2423a008 r9 = 0x2426bff0 r10 = 0x2423a0f0 r12 = 0x2426bff0 Unable to unwind into user mode KDB: enter: panic [ thread pid 35088 tid 100113 ] Stopped at $d.3: ldrb r15, [r15, r15, ror r15]! db> Thanks for reading, and any insights.... bob prohaska
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