On Mon, 16 May 2022 07:16:22 +0100, Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote: > > The kernel crash reported on arm64 juno-r2 device with kselftest-merge config > while booting Linux next-20220513 kernel [1]. > > [ 0.000000] Booting Linux on physical CPU 0x0000000100 [0x410fd033] > [ 0.000000] Linux version 5.18.0-rc6-next-20220513 > (oe-user@oe-host) (aarch64-linaro-linux-gcc (GCC) 7.3.0, GNU ld (GNU > Binutils) 2.30.0.20180208) #1 SMP PREEMPT Fri May 13 08:34:42 UTC 2022 > [ 0.000000] Machine model: ARM Juno development board (r2) > [ 0.000000] earlycon: pl11 at MMIO 0x000000007ff80000 (options '') > [ 0.000000] printk: bootconsole [pl11] enabled > [ 0.000000] efi: UEFI not found. > [ 0.000000] NUMA: No NUMA configuration found > [ 0.000000] NUMA: Faking a node at [mem > 0x0000000080000000-0x00000009ffffffff] > [ 0.000000] NUMA: NODE_DATA [mem 0x9fefce600-0x9fefd0fff] > [ 0.000000] Zone ranges: > [ 0.000000] DMA [mem 0x0000000080000000-0x00000000ffffffff] > [ 0.000000] DMA32 empty > [ 0.000000] Normal [mem 0x0000000100000000-0x00000009ffffffff] > [ 0.000000] Movable zone start for each node > [ 0.000000] Early memory node ranges > [ 0.000000] node 0: [mem 0x0000000080000000-0x00000000feffffff] > [ 0.000000] node 0: [mem 0x0000000880000000-0x00000009ffffffff] > [ 0.000000] Initmem setup node 0 [mem 0x0000000080000000-0x00000009ffffffff] > [ 0.000000] On node 0, zone Normal: 4096 pages in unavailable ranges > [ 0.000000] cma: Reserved 32 MiB at 0x00000000fd000000 > [ 0.000000] psci: probing for conduit method from DT. > [ 0.000000] psci: PSCIv1.1 detected in firmware. > [ 0.000000] psci: Using standard PSCI v0.2 function IDs > [ 0.000000] psci: Trusted OS migration not required > [ 0.000000] psci: SMC Calling Convention v1.0 > [ 0.000000] percpu: Embedded 31 pages/cpu s89632 r8192 d29152 u126976 > [ 0.000000] pcpu-alloc: s89632 r8192 d29152 u126976 alloc=31*4096 > [ 0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 [0] 4 [0] 5 > [ 0.000000] Detected VIPT I-cache on CPU0 > [ 0.000000] CPU features: detected: ARM erratum 843419 > [ 0.000000] CPU features: detected: ARM erratum 845719 > [ 0.000000] Fallback order for Node 0: 0 > [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 2060288 > [ 0.000000] Policy zone: Normal > [ 0.000000] Kernel command line: console=ttyAMA0,115200n8 > root=/dev/nfs rw > nfsroot=10.66.16.125:/var/lib/lava/dispatcher/tmp/5021955/extract-nfsrootfs-23zdukp_,tcp,hard,vers=3 > rootwait earlycon=pl011,0x7ff80000 debug systemd.log_target=null > user_debug=31 androidboot.hardware=juno loglevel=9 > sky2.mac_address=0x00,0x02,0xF7,0x00,0x68,0x3F ip=dhcp > [ 0.000000] Unknown kernel command line parameters > \"user_debug=31\", will be passed to user space. > [ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, > 8388608 bytes, linear) > [ 0.000000] Inode-cache hash table entries: 524288 (order: 10, > 4194304 bytes, linear) > [ 0.000000] mem auto-init: stack:off, heap alloc:on, heap free:off > [ 0.000000] Stack Depot early init allocating hash table with > memblock_alloc, 8388608 bytes > [ 0.000000] software IO TLB: mapped [mem > 0x00000000f9000000-0x00000000fd000000] (64MB) > [ 0.000000] Memory: 8038640K/8372224K available (22784K kernel > code, 5468K rwdata, 11824K rodata, 11520K init, 11734K bss, 300816K > reserved, 32768K cma-reserved) > [ 0.000000] ********************************************************** > [ 0.000000] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** > [ 0.000000] ** ** > [ 0.000000] ** This system shows unhashed kernel memory addresses ** > [ 0.000000] ** via the console, logs, and other interfaces. This ** > [ 0.000000] ** might reduce the security of your system. ** > [ 0.000000] ** ** > [ 0.000000] ** If you see this message and you are not debugging ** > [ 0.000000] ** the kernel, report this immediately to your system ** > [ 0.000000] ** administrator! ** > [ 0.000000] ** ** > [ 0.000000] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** > [ 0.000000] ********************************************************** > [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=6, Nodes=1 > [ 0.000000] ftrace: allocating 69398 entries in 272 pages > [ 0.000000] ftrace: allocated 272 pages with 2 groups > [ 0.000000] trace event string verifier disabled > [ 0.000000] Running RCU self tests > [ 0.000000] rcu: Preemptible hierarchical RCU implementation. > [ 0.000000] rcu: RCU event tracing is enabled. > [ 0.000000] rcu: RCU lockdep checking is enabled. > [ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=6. > [ 0.000000] Trampoline variant of Tasks RCU enabled. > [ 0.000000] Rude variant of Tasks RCU enabled. > [ 0.000000] Tracing variant of Tasks RCU enabled. > [ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay > is 25 jiffies. > [ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=6 > [ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0 > [ 0.000000] Root IRQ handler: gic_handle_irq > [ 0.000000] GIC: Using split EOI/Deactivate mode > [ 0.000000] Unexpected kernel BRK exception at EL1 Huh. Who inserts random BRKs like this? > [ 0.000000] Internal error: BRK handler: f20003e8 [#1] PREEMPT SMP > [ 0.000000] Modules linked in: > [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted > 5.18.0-rc6-next-20220513 #1 > [ 0.000000] Hardware name: ARM Juno development board (r2) (DT) > [ 0.000000] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 0.000000] pc : gic_dist_config+0x4c/0x68 > [ 0.000000] lr : gic_init_bases+0xd4/0x248 Please provide a disassembly of this function. Thanks, M. -- Without deviation from the norm, progress is not possible.
