From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rolf Eike Beer Subject: Running the gdb 7.12.1 testsuite breaks kernel 4.13.8 on C8000 Date: Thu, 25 Jan 2018 09:59:03 +0100 Message-ID: <11946948.1Lt8Nslq4k@devpool21> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" To: linux-parisc@vger.kernel.org Return-path: List-ID: List-Id: linux-parisc.vger.kernel.org The last message I had for the crash below is: Running /var/tmp/portage/sys-devel/gdb-7.12.1/work/gdb-7.12.1/gdb/testsuite/gdb.base/bp-permanent.exp ... [ 909.754182] Backtrace: [ 909.756303] [ 909.756303] [ 909.756303] Bad Address (null pointer deref?): Code=6 (Instruction TLB miss fault) regs=000000007c818a50 (Addr=0000000000000000) [ 909.756303] CPU: 0 PID: 5191 Comm: bp-permanent Not tainted 4.13.8 #2 [ 909.756303] task: 000000007c8183d0 task.stack: 000000007aad8000 [ 909.756303] [ 909.756303] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [ 909.756303] PSW: 00000000000001000000011100001111 Not tainted [ 909.756303] r00-03 000000000004070f 00000000f8f07840 00000000000106bb 00000000f8f07880 [ 909.756303] r04-07 00000000f815bc70 00000000000e87a0 0000000000000000 00000000000e8818 [ 909.756303] r08-11 0000000000000000 0000000000000000 000000000000006c 0000000000000000 [ 909.756303] r12-15 0000000000000000 0000000000000000 0000000000080a74 00000000000e83f8 [ 909.756303] r16-19 00000000000c85c8 00000000000cbad8 00000000000c99e8 00000000f815bc70 [ 909.756303] r20-23 00000000000120bc 0000000000000004 ffffffffffffe520 0000000000012022 [ 909.756303] r24-27 00000000000120bc 00000000000105d8 00000000000120b8 0000000000012000 [ 909.756303] r28-31 00000000000120b8 0000000000000001 00000000f8f078c0 00000000f8bffa9f [ 909.756303] sr00-03 00000000010a1800 00000000010a1800 0000000000000000 00000000010a1800 [ 909.756303] sr04-07 00000000010a1800 00000000010a1800 00000000010a1800 00000000010a1800 [ 909.756303] [ 909.756303] IASQ: 00000000010a1800 00000000010a1800 IAOQ: 0000000000000000 0000000000000004 [ 909.756303] IIR: 43ffff80 ISR: 0000000010240000 IOR: 000000a43fb07880 [ 909.756303] CPU: 0 CR30: 000000007aad8000 CR31: ffffffffffffffff [ 909.756303] ORIG_R28: 0000000000000000 [ 909.756303] IAOQ[0]: (null) [ 909.756303] IAOQ[1]: 0x4 [ 909.756303] RP(r2): 0x106bb [ 909.756303] Backtrace: [ 909.756303] [ 909.756303] Kernel panic - not syncing: Bad Address (null pointer deref?) [ 909.756303] ---[ end Kernel panic - not syncing: Bad Address (null pointer deref?) This is actually the second place where it breaks, before that I had the same with this test (twice): Running /var/tmp/portage/sys-devel/gdb-7.12.1/work/gdb-7.12.1/gdb/testsuite/gdb.base/async.exp ... It's a Gentoo system, the kernel has been built with gcc 6.4.0.