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[68.228.73.187]) by smtp.googlemail.com with ESMTPSA id u9-v6sm1181872otc.14.2018.10.03.20.02.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Oct 2018 20:02:25 -0700 (PDT) To: "linux-kernel@vger.kernel.org" , kvmarm@lists.cs.columbia.edu, linux ARM , Russell King , Marc Zyngier , christoffer.dall@arm.com From: Florian Fainelli Subject: kernel BUG at arch/arm/kvm/coproc.c:1406! Openpgp: preference=signencrypt Autocrypt: addr=f.fainelli@gmail.com; prefer-encrypt=mutual; keydata= xsDiBEjPuBIRBACW9MxSJU9fvEOCTnRNqG/13rAGsj+vJqontvoDSNxRgmafP8d3nesnqPyR xGlkaOSDuu09rxuW+69Y2f1TzjFuGpBk4ysWOR85O2Nx8AJ6fYGCoeTbovrNlGT1M9obSFGQ X3IzRnWoqlfudjTO5TKoqkbOgpYqIo5n1QbEjCCwCwCg3DOH/4ug2AUUlcIT9/l3pGvoRJ0E AICDzi3l7pmC5IWn2n1mvP5247urtHFs/uusE827DDj3K8Upn2vYiOFMBhGsxAk6YKV6IP0d ZdWX6fqkJJlu9cSDvWtO1hXeHIfQIE/xcqvlRH783KrihLcsmnBqOiS6rJDO2x1eAgC8meAX SAgsrBhcgGl2Rl5gh/jkeA5ykwbxA/9u1eEuL70Qzt5APJmqVXR+kWvrqdBVPoUNy/tQ8mYc nzJJ63ng3tHhnwHXZOu8hL4nqwlYHRa9eeglXYhBqja4ZvIvCEqSmEukfivk+DlIgVoOAJbh qIWgvr3SIEuR6ayY3f5j0f2ejUMYlYYnKdiHXFlF9uXm1ELrb0YX4GMHz80nRmxvcmlhbiBG YWluZWxsaSA8Zi5mYWluZWxsaUBnbWFpbC5jb20+wmYEExECACYCGyMGCwkIBwMCBBUCCAME FgIDAQIeAQIXgAUCVF/S8QUJHlwd3wAKCRBhV5kVtWN2DvCVAJ4u4/bPF4P3jxb4qEY8I2gS 6hG0gACffNWlqJ2T4wSSn+3o7CCZNd7SLSDOw00ESM+4EhAQAL/o09boR9D3Vk1Tt7+gpYr3 WQ6hgYVON905q2ndEoA2J0dQxJNRw3snabHDDzQBAcqOvdi7YidfBVdKi0wxHhSuRBfuOppu pdXkb7zxuPQuSveCLqqZWRQ+Cc2QgF7SBqgznbe6Ngout5qXY5Dcagk9LqFNGhJQzUGHAsIs hap1f0B1PoUyUNeEInV98D8Xd/edM3mhO9nRpUXRK9Bvt4iEZUXGuVtZLT52nK6Wv2EZ1TiT OiqZlf1P+vxYLBx9eKmabPdm3yjalhY8yr1S1vL0gSA/C6W1o/TowdieF1rWN/MYHlkpyj9c Rpc281gAO0AP3V1G00YzBEdYyi0gaJbCEQnq8Vz1vDXFxHzyhgGz7umBsVKmYwZgA8DrrB0M oaP35wuGR3RJcaG30AnJpEDkBYHznI2apxdcuTPOHZyEilIRrBGzDwGtAhldzlBoBwE3Z3MY 31TOpACu1ZpNOMysZ6xiE35pWkwc0KYm4hJA5GFfmWSN6DniimW3pmdDIiw4Ifcx8b3mFrRO BbDIW13E51j9RjbO/nAaK9ndZ5LRO1B/8Fwat7bLzmsCiEXOJY7NNpIEpkoNoEUfCcZwmLrU +eOTPzaF6drw6ayewEi5yzPg3TAT6FV3oBsNg3xlwU0gPK3v6gYPX5w9+ovPZ1/qqNfOrbsE FRuiSVsZQ5s3AAMFD/9XjlnnVDh9GX/r/6hjmr4U9tEsM+VQXaVXqZuHKaSmojOLUCP/YVQo 7IiYaNssCS4FCPe4yrL4FJJfJAsbeyDykMN7wAnBcOkbZ9BPJPNCbqU6dowLOiy8AuTYQ48m vIyQ4Ijnb6GTrtxIUDQeOBNuQC/gyyx3nbL/lVlHbxr4tb6YkhkO6shjXhQh7nQb33FjGO4P WU11Nr9i/qoV8QCo12MQEo244RRA6VMud06y/E449rWZFSTwGqb0FS0seTcYNvxt8PB2izX+ HZA8SL54j479ubxhfuoTu5nXdtFYFj5Lj5x34LKPx7MpgAmj0H7SDhpFWF2FzcC1bjiW9mjW HaKaX23Awt97AqQZXegbfkJwX2Y53ufq8Np3e1542lh3/mpiGSilCsaTahEGrHK+lIusl6mz Joil+u3k01ofvJMK0ZdzGUZ/aPMZ16LofjFA+MNxWrZFrkYmiGdv+LG45zSlZyIvzSiG2lKy kuVag+IijCIom78P9jRtB1q1Q5lwZp2TLAJlz92DmFwBg1hyFzwDADjZ2nrDxKUiybXIgZp9 aU2d++ptEGCVJOfEW4qpWCCLPbOT7XBr+g/4H3qWbs3j/cDDq7LuVYIe+wchy/iXEJaQVeTC y5arMQorqTFWlEOgRA8OP47L9knl9i4xuR0euV6DChDrguup2aJVU8JPBBgRAgAPAhsMBQJU X9LxBQkeXB3fAAoJEGFXmRW1Y3YOj4UAn3nrFLPZekMeqX5aD/aq/dsbXSfyAKC45Go0YyxV HGuUuzv+GKZ6nsysJw== Message-ID: <6b134030-f9a4-1983-caac-5cfcc2be9776@gmail.com> Date: Wed, 3 Oct 2018 20:02:22 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Seeing the following BUG_ON() being triggered on a Lamobo R1 (SUN7I/Cortex-A7), did not have the time to run a bisection since I was chasing another regression. My guess would be that 3e8a8a50c7ef1a4f71921731f0e1748a7f70ddaa ("KVM: arm: vgic-v3: Add support for ICC_SGI0R and ICC_ASGI1R accesses") is the culprit since it does add new entries to cp15_regs[]. Thanks! Uncompressing Linux... done, booting the kernel. [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Linux version 4.19.0-rc5+ (florian@bender) (gcc version 7.3.0 (OpenWrt GCC 7.3.0 r8056-4fca0e889673)) #0 SMP PREEMPT Wed Sep 12 00:19:51 2018 [ 0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), cr=30c5387d [ 0.000000] CPU: div instructions available: patching division code [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] OF: fdt: Machine model: Lamobo R1 [ 0.000000] bootconsole [earlycon0] enabled [ 0.000000] Memory policy: Data cache writealloc [ 0.000000] psci: probing for conduit method from DT. [ 0.000000] psci: Using PSCI v0.1 Function IDs from DT [ 0.000000] random: get_random_bytes called from start_kernel+0x98/0x4f8 with crng_init=0 [ 0.000000] percpu: Embedded 17 pages/cpu @(ptrval) s40844 r8192 d20596 u69632 [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 260608 [ 0.000000] Kernel command line: console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p2 rootwait [ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) [ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) [ 0.000000] Memory: 1026088K/1048576K available (7106K kernel code, 693K rwdata, 1620K rodata, 2048K init, 252K bss, 22488K reserved, 0K cma-reserved, 262144K highmem) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) [ 0.000000] vmalloc : 0xf0800000 - 0xff800000 ( 240 MB) [ 0.000000] lowmem : 0xc0000000 - 0xf0000000 ( 768 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0x(ptrval) - 0x(ptrval) (9123 kB) [ 0.000000] .init : 0x(ptrval) - 0x(ptrval) (2048 kB) [ 0.000000] .data : 0x(ptrval) - 0x(ptrval) ( 694 kB) [ 0.000000] .bss : 0x(ptrval) - 0x(ptrval) ( 253 kB) [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1 [ 0.000000] ftrace: allocating 25465 entries in 75 pages [ 0.000000] rcu: Preemptible hierarchical RCU implementation. [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 0.000000] Tasks RCU enabled. [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 [ 0.000000] GIC: Using split EOI/Deactivate mode [ 0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (phys). [ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns [ 0.000008] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns [ 0.008005] Switching to timer-based delay loop, resolution 41ns [ 0.014376] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns [ 0.023773] clocksource: hstimer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 6370868154 ns [ 0.033325] Console: colour dummy device 80x30 [ 0.037819] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000) [ 0.048187] pid_max: default: 32768 minimum: 301 [ 0.052962] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.059600] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes) [ 0.067270] CPU: Testing write buffer coherency: ok [ 0.072642] /cpus/cpu@0 missing clock-frequency property [ 0.077964] /cpus/cpu@1 missing clock-frequency property [ 0.083323] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 [ 0.143531] Setting up static identity map for 0x40200000 - 0x40200060 [ 0.150249] rcu: Hierarchical SRCU implementation. [ 0.195224] smp: Bringing up secondary CPUs ... [ 0.265699] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 [ 0.265883] smp: Brought up 1 node, 2 CPUs [ 0.275699] SMP: Total of 2 processors activated (96.00 BogoMIPS). [ 0.281871] CPU: All CPU(s) started in HYP mode. [ 0.286498] CPU: Virtualization extensions available. [ 0.299610] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 4 [ 0.308215] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.318130] futex hash table entries: 512 (order: 3, 32768 bytes) [ 0.324653] pinctrl core: initialized pinctrl subsystem [ 0.331725] NET: Registered protocol family 16 [ 0.336539] DMA: preallocated 256 KiB pool for atomic coherent allocations [ 0.346011] No ATAGs? [ 0.346151] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers. [ 0.356470] hw-breakpoint: maximum watchpoint size is 8 bytes. [ 0.439264] SCSI subsystem initialized [ 0.443426] usbcore: registered new interface driver usbfs [ 0.451004] usbcore: registered new interface driver hub [ 0.456575] usbcore: registered new device driver usb [ 0.462285] pps_core: LinuxPPS API ver. 1 registered [ 0.467253] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 0.476478] PTP clock support registered [ 0.480847] Advanced Linux Sound Architecture Driver Initialized. [ 0.488639] clocksource: Switched to clocksource arch_sys_counter [ 0.593639] NET: Registered protocol family 2 [ 0.598892] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes) [ 0.606569] TCP established hash table entries: 8192 (order: 3, 32768 bytes) [ 0.613748] TCP bind hash table entries: 8192 (order: 4, 65536 bytes) [ 0.620333] TCP: Hash tables configured (established 8192 bind 8192) [ 0.626834] UDP hash table entries: 512 (order: 2, 16384 bytes) [ 0.632856] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes) [ 0.639880] NET: Registered protocol family 1 [ 0.644703] kvm [1]: 8-bit VMID [ 0.648317] kvm [1]: vgic interrupt IRQ16 [ 0.652470] kvm [1]: reg table (ptrval) out of order (41) [ 0.657878] ------------[ cut here ]------------ [ 0.662488] kernel BUG at arch/arm/kvm/coproc.c:1406! [ 0.667533] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM [ 0.673359] Modules linked in: [ 0.676421] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.0-rc5+ #0 [ 0.682764] Hardware name: Allwinner sun7i (A20) Family [ 0.687995] PC is at kvm_coproc_table_init+0xa8/0xb8 [ 0.692959] LR is at vprintk_emit+0xac/0x1e8 [ 0.697223] pc : [] lr : [] psr: 20000113 [ 0.703471] sp : ef11fe18 ip : ef11fd50 fp : ef11fe2c [ 0.708688] r10: c0c8d018 r9 : c0e05170 r8 : 00000000 [ 0.713905] r7 : c0e04c84 r6 : c0eadd58 r5 : c0e04d54 r4 : 00000008 [ 0.720423] r3 : e126e865 r2 : e126e865 r1 : 2eb34000 r0 : 00000001 [ 0.726942] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 0.734066] Control: 30c5387d Table: 40003000 DAC: fffffffd [ 0.739804] Process swapper/0 (pid: 1, stack limit = 0x(ptrval)) [ 0.745802] Stack: (0xef11fe18 to 0xef120000) [ 0.750155] fe00: 00000008 c0e04d54 [ 0.758324] fe20: ef11fe6c ef11fe30 c021d1e0 c0218c0c c0c59a18 c0e04c54 00000001 e126e865 [ 0.766493] fe40: c0c02a30 c0e04c54 c0e97680 00000000 c021ac30 00000000 00000000 c0c00714 [ 0.774662] fe60: ef11febc ef11fe70 c020f0c4 c021ce40 00000164 00000000 c0e8b340 e126e865 [ 0.782831] fe80: ef11fec4 00000f60 c08cfad4 e126e865 ef11feac c0e04c54 c0e97680 00000000 [ 0.791000] fea0: c021ac30 ffffe000 c0c59834 c0c00714 ef11fecc ef11fec0 c021ac58 c020f098 [ 0.799169] fec0: ef11ff44 ef11fed0 c020341c c021ac3c c09d59c4 c09d59a4 c09d59f0 c09e307c [ 0.807338] fee0: c0e04c54 00000000 00000000 c09d5938 c0a2c760 00000006 00000006 c0e9abd8 [ 0.815507] ff00: c0c00714 c0a84598 ef11ff2c efffce35 00000000 e126e865 00000000 e126e865 [ 0.823676] ff20: c0e97680 c0c8bb08 00000007 c0ead740 c0ead740 c0c59834 ef11ff94 ef11ff48 [ 0.831845] ff40: c0c01380 c02033c4 00000006 00000006 00000000 c0c00714 ef11ff7c ef11ff68 [ 0.840013] ff60: c0a84598 000000a6 ffffe000 00000000 c08e73c0 00000000 00000000 00000000 [ 0.848182] ff80: 00000000 00000000 ef11ffac ef11ff98 c08e73d8 c0c010b0 00000000 c08e73c0 [ 0.856351] ffa0: 00000000 ef11ffb0 c02011f8 c08e73cc 00000000 00000000 00000000 00000000 [ 0.864519] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 0.872688] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [ 0.880878] [] (kvm_coproc_table_init) from [] (kvm_arch_init+0x3ac/0x4b8) [ 0.889486] [] (kvm_arch_init) from [] (kvm_init+0x38/0x2b0) [ 0.896878] [] (kvm_init) from [] (arm_init+0x28/0x2c) [ 0.903751] [] (arm_init) from [] (do_one_initcall+0x64/0x288) [ 0.911321] [] (do_one_initcall) from [] (kernel_init_freeable+0x2dc/0x374) [ 0.920016] [] (kernel_init_freeable) from [] (kernel_init+0x18/0x128) [ 0.928276] [] (kernel_init) from [] (ret_from_fork+0x14/0x3c) [ 0.935833] Exception stack(0xef11ffb0 to 0xef11fff8) [ 0.940879] ffa0: 00000000 00000000 00000000 00000000 [ 0.949047] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 0.957214] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 0.963825] Code: e89da830 e3e02000 e1e03312 eafffff9 (e7f001f2) [ 0.969931] ---[ end trace cc97e2085c3575af ]--- [ 0.974544] Kernel panic - not syncing: Fatal exception [ 0.979773] CPU1: stopping [ 0.982486] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G D 4.19.0-rc5+ #0 [ 0.990216] Hardware name: Allwinner sun7i (A20) Family [ 0.995453] [] (unwind_backtrace) from [] (show_stack+0x20/0x24) [ 1.003195] [] (show_stack) from [] (dump_stack+0x90/0xa4) [ 1.010415] [] (dump_stack) from [] (handle_IPI+0x424/0x438) [ 1.017807] [] (handle_IPI) from [] (gic_handle_irq+0x9c/0xa0) [ 1.025371] [] (gic_handle_irq) from [] (__irq_svc+0x58/0x8c) [ 1.032841] Exception stack(0xef155f30 to 0xef155f78) [ 1.037888] 5f20: 00000000 00000614 ef7d66cc c0243e40 [ 1.046057] 5f40: ffffe000 c0e04c7c c0e04cb8 00000002 00000001 c0e972eb c09d6ae4 ef155f8c [ 1.054224] 5f60: ef155f90 ef155f80 c0230d40 c0230d44 60000013 ffffffff [ 1.060840] [] (__irq_svc) from [] (arch_cpu_idle+0x48/0x4c) [ 1.068237] [] (arch_cpu_idle) from [] (default_idle_call+0x30/0x3c) [ 1.076326] [] (default_idle_call) from [] (do_idle+0xf4/0x164) [ 1.083980] [] (do_idle) from [] (cpu_startup_entry+0x28/0x2c) [ 1.091546] [] (cpu_startup_entry) from [] (secondary_start_kernel+0x190/0x1b4) [ 1.100577] [] (secondary_start_kernel) from [<4020294c>] (0x4020294c) [ 1.107971] Rebooting in 1 seconds.. [ 3.111688] Reboot failed -- System halted -- Florian