Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751704AbdG0Tpc (ORCPT ); Thu, 27 Jul 2017 15:45:32 -0400 Received: from mail-lf0-f66.google.com ([209.85.215.66]:35026 "EHLO mail-lf0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751577AbdG0Tpa (ORCPT ); Thu, 27 Jul 2017 15:45:30 -0400 From: Mikael Pettersson X-Google-Original-From: "Mikael Pettersson" MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <22906.17109.563338.559874@gargle.gargle.HOWL> Date: Thu, 27 Jul 2017 21:45:25 +0200 To: sparclinux@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "David S. Miller" Subject: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels X-Mailer: VM 8.1.2 under 25.2.1 (x86_64-redhat-linux-gnu) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7777 Lines: 136 Attempting to build strace-4.18 as sparcv9 code and run its test suite on a sparc64 machine (Sun Blade 2500 w/ 2 x USIIIi in my case) fails reliably in three test cases (sched.gen, sched_xetattr.gen, and poll) because two test binaries (sched_xetattr and poll) OOPS the kernel and get killed. Sample dmesg from 4.13-rc2: [42912.270398] Unable to handle kernel NULL pointer dereference [42912.327717] tsk->{mm,active_mm}->context = 000000000000136a [42912.383789] tsk->{mm,active_mm}->pgd = fff0000227db4000 [42912.435247] \|/ ____ \|/ "@'/ .. \`@" /_| \__/ |_\ \__U_/ [42912.559982] sched_xetattr(21866): Oops [#1] [42912.597773] CPU: 0 PID: 21866 Comm: sched_xetattr Not tainted 4.13.0-rc2 #1 [42912.672138] task: fff0000229a5c380 task.stack: fff0000227dec000 [42912.732876] TSTATE: 0000004411001603 TPC: 00000000007570fc TNPC: 0000000000757110 Y: 00000000 Not tainted [42912.845079] TPC: <__bzero+0x20/0xc0> [42912.874870] g0: 0000000000000000 g1: 0000000000000000 g2: 0000003000000000 g3: 00000000008ca100 [42912.972120] g4: fff0000229a5c380 g5: fff000023ef44000 g6: fff0000227dec000 g7: 0000000000000030 [42913.069446] o0: 0000000000000030 o1: fff0000227defe70 o2: 0000000000000000 o3: 0000000000000030 [42913.166765] o4: fff0000227defe70 o5: 0000000000000000 sp: fff0000227def5c1 ret_pc: 0000000000474fa4 [42913.268664] RPC: [42913.311046] l0: 00000000f7b6caa8 l1: 00000000cccccccd l2: 00000000ffc2e7d4 l3: 00000000f7b6c888 [42913.408293] l4: 0000000000000000 l5: 0000000000000000 l6: 0000000000000000 l7: 00000000f7ba2000 [42913.505627] i0: 0000000000000000 i1: 00000000f79f1ffc i2: 0000000000000000 i3: 0000000000000000 [42913.602940] i4: fff0000227defe70 i5: fff0000227defe70 i6: fff0000227def6a1 i7: 00000000004061b4 [42913.700268] I7: [42913.744966] Call Trace: [42913.759938] [00000000004061b4] linux_sparc_syscall32+0x34/0x60 [42913.820656] Disabling lock debugging due to kernel taint [42913.873374] Caller[00000000004061b4]: linux_sparc_syscall32+0x34/0x60 [42913.940953] Caller[0000000000010ed0]: 0x10ed0 [42913.981081] Instruction DUMP: [42913.981085] c56a2000 [42914.002817] 808a2003 [42914.016643] 02480006 [42914.030363] [42914.044094] 90022001 [42914.057816] 808a2003 [42914.071539] 1247fffd [42914.085269] 92226001 [42914.098992] 808a2007 [42914.471525] Unable to handle kernel NULL pointer dereference [42914.528830] tsk->{mm,active_mm}->context = 00000000000017cd [42914.584862] tsk->{mm,active_mm}->pgd = fff0000227b78000 [42914.636319] \|/ ____ \|/ "@'/ .. \`@" /_| \__/ |_\ \__U_/ [42914.761013] sched_xetattr(22483): Oops [#2] [42914.798837] CPU: 0 PID: 22483 Comm: sched_xetattr Tainted: G D 4.13.0-rc2 #1 [42914.889222] task: fff000123c73bc00 task.stack: fff0001238998000 [42914.949915] TSTATE: 0000004411001603 TPC: 00000000007570fc TNPC: 0000000000757110 Y: 00000000 Tainted: G D [42915.078076] TPC: <__bzero+0x20/0xc0> [42915.107875] g0: 0000000000000000 g1: 0000000000000000 g2: 0000003000000000 g3: 00000000008ca100 [42915.205205] g4: fff000123c73bc00 g5: fff000023ef44000 g6: fff0001238998000 g7: 0000000000000030 [42915.302532] o0: 0000000000000030 o1: fff000123899be70 o2: 0000000000000000 o3: 0000000000000030 [42915.399851] o4: fff000123899be70 o5: 0000000000000000 sp: fff000123899b5c1 ret_pc: 0000000000474fa4 [42915.501731] RPC: [42915.544033] l0: 00000000f784caa8 l1: 00000000cccccccd l2: 00000000ff91c7d4 l3: 00000000f784c888 [42915.641289] l4: 0000000000000000 l5: 0000000000000000 l6: 0000000000000000 l7: 00000000f7882000 [42915.738582] i0: 0000000000000000 i1: 00000000f76d1ffc i2: 0000000000000000 i3: 0000000000000000 [42915.835827] i4: fff000123899be70 i5: fff000123899be70 i6: fff000123899b6a1 i7: 00000000004061b4 [42915.933160] I7: [42915.977822] Call Trace: [42915.992698] [00000000004061b4] linux_sparc_syscall32+0x34/0x60 [42916.053335] Caller[00000000004061b4]: linux_sparc_syscall32+0x34/0x60 [42916.120934] Caller[0000000000010ed0]: 0x10ed0 [42916.161052] Instruction DUMP: [42916.161056] c56a2000 [42916.182878] 808a2003 [42916.196607] 02480006 [42916.210330] [42916.224052] 90022001 [42916.237781] 808a2003 [42916.251502] 1247fffd [42916.265224] 92226001 [42916.278955] 808a2007 [42918.071476] ------------[ cut here ]------------ [42918.115146] WARNING: CPU: 0 PID: 23177 at arch/sparc/kernel/sys_sparc32.c:150 compat_SyS_sparc_sigaction+0x34/0x4c [42918.234167] Modules linked in: af_packet ipv6 hid_generic tg3 hwmon i2c_ali1535 ohci_pci ptp ohci_hcd evdev i2c_core pps_core flash sr_mod cdrom pata_ali libata [42918.405845] CPU: 0 PID: 23177 Comm: sigaction Tainted: G D 4.13.0-rc2 #1 [42918.491645] Call Trace: [42918.506518] [0000000000455b18] __warn+0xb4/0xc4 [42918.549976] [00000000004449e4] compat_SyS_sparc_sigaction+0x34/0x4c [42918.616319] [00000000004061b4] linux_sparc_syscall32+0x34/0x60 [42918.677014] ---[ end trace 4800f70b0fef934e ]--- [42947.617187] Unable to handle kernel NULL pointer dereference [42947.674440] tsk->{mm,active_mm}->context = 00000000000018d3 [42947.730560] tsk->{mm,active_mm}->pgd = fff0000202a04000 [42947.782020] \|/ ____ \|/ "@'/ .. \`@" /_| \__/ |_\ \__U_/ [42947.906726] poll(31644): Oops [#3] [42947.934244] CPU: 0 PID: 31644 Comm: poll Tainted: G D W 4.13.0-rc2 #1 [42948.014399] task: fff000023c68cb00 task.stack: fff0000227adc000 [42948.075064] TSTATE: 0000004411001601 TPC: 00000000007570fc TNPC: 0000000000757110 Y: 00000000 Tainted: G D W [42948.203275] TPC: <__bzero+0x20/0xc0> [42948.233069] g0: fff000123c5a8828 g1: 0000000000000000 g2: 0000000000000000 g3: 00000000008ca100 [42948.330322] g4: fff000023c68cb00 g5: fff000023ef44000 g6: fff0000227adc000 g7: 0000000000000008 [42948.427651] o0: 000000000000000c o1: fff0000227adfa80 o2: 0000000000000000 o3: 000000000000000c [42948.524959] o4: fff0000227adfa7c o5: 00000000000000fb sp: fff0000227adf181 ret_pc: 0000000000516ee0 [42948.626876] RPC: [42948.662408] l0: 0000000000000002 l1: 00000000014000c0 l2: 00000000000003fe l3: fff0000227adfa7c [42948.759738] l4: 0000000000000000 l5: 0000000000000000 l6: 000000000000006d l7: ffffffffffffffea [42948.857064] i0: 00000000f7dbdff8 i1: 0000000000000002 i2: fff0000227adfe90 i3: fff0000227adfa70 [42948.954389] i4: 000ffffdd8520590 i5: fff0000227adfa70 i6: fff0000227adf5e1 i7: 00000000005177f8 [42949.051703] I7: [42949.081507] Call Trace: [42949.096407] [00000000005177f8] SyS_poll+0x74/0xd0 [42949.142242] [00000000004061b4] linux_sparc_syscall32+0x34/0x60 [42949.202876] Caller[00000000005177f8]: SyS_poll+0x74/0xd0 [42949.255596] Caller[00000000004061b4]: linux_sparc_syscall32+0x34/0x60 [42949.323177] Caller[0000000000010a20]: 0x10a20 [42949.363284] Instruction DUMP: [42949.363288] c56a2000 [42949.385037] 808a2003 [42949.398841] 02480006 [42949.412564] [42949.426287] 90022001 [42949.440034] 808a2003 [42949.453739] 1247fffd [42949.467465] 92226001 [42949.481188] 808a2007 [42965.393520] pc[534]: segfault at 1085c ip 000000000001085c (rpc 0000000000010854) sp 00000000ffba8da8 error 30001 in pc[20000+2000] This occurs reliably with the 4.13-rc2, 4.13-rc1, and 4.12.0 kernels. With 4.11.0 and older kernels the binaries get some EFAULTs but they survive that, and there are also no OOPSes. /Mikael