Hi,
I have installed the “JetPack-L4T-3.0-linux-x64.run” Jetpack in my host machine.
Built the kernel for tegra (used defconfig : tegra18_defconfig) target by enabling the following debug symbols.
CONFIG_DEBUG_SPINLOCK=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_DEBUG_LOCK_ALLOC=y
CONFIG_LOCKDEP=y
CONFIG_LOCK_STAT=y
CONFIG_STACKTRACE=y
But on boot-up, I’m getting the following backtrace.
[ 8.996833] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 9.008519] IP-Config: Guessing netmask 255.0.0.0
[ 9.008676] INFO: trying to register non-static key.
[ 9.008677] the code is fine but needs lockdep annotation.
[ 9.008678] turning off the locking correctness validator.
[ 9.008681] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.15_nl-tegra-tx2+ #5
[ 9.008683] Hardware name: quill (DT)
[ 9.008684] Call trace:
[ 9.008691] [] dump_backtrace+0x0/0xe8
[ 9.008695] [] show_stack+0x14/0x20
[ 9.008699] [] dump_stack+0x98/0xb8
[ 9.008703] [] __lock_acquire.isra.16+0xc48/0xc50
[ 9.008704] [] lock_acquire+0xd8/0x1f0
[ 9.008709] [] _raw_spin_lock+0x50/0x90
[ 9.008713] [] eqos_start_xmit+0x70/0x380
[ 9.008717] [] dev_hard_start_xmit+0x30c/0x590
[ 9.008720] [] sch_direct_xmit+0x108/0x238
[ 9.008722] [] __dev_queue_xmit+0x228/0x648
[ 9.008724] [] dev_queue_xmit+0x10/0x18
[ 9.008727] [] neigh_resolve_output+0x134/0x1f0
[ 9.008730] [] ip6_finish_output2+0x2a8/0x778
[ 9.008732] [] ip6_finish_output+0x100/0x1f8
[ 9.008734] [] ip6_output+0xb8/0x1f8
[ 9.008738] [] mld_sendpack+0x400/0x4d8
[ 9.008740] [] mld_ifc_timer_expire+0x1e4/0x2c8
[ 9.008743] [] call_timer_fn+0xc4/0x330
[ 9.008744] [] run_timer_softirq+0x27c/0x300
[ 9.008747] [] __do_softirq+0x188/0x420
[ 9.008749] [] irq_exit+0x88/0xe0
[ 9.008752] [] __handle_domain_irq+0x60/0xb8
[ 9.008754] [] gic_handle_irq+0x64/0xc0
[ 9.008756] [] el1_irq+0x68/0xd8
[ 9.008759] [] cpuidle_enter+0x18/0x20
[ 9.008761] [] call_cpuidle+0x24/0x50
[ 9.008763] [] cpu_startup_entry+0x270/0x340
[ 9.008765] [] rest_init+0xc8/0xd8
[ 9.008769] [] start_kernel+0x398/0x3ac
[ 9.008770] [<0000000080b05000>] 0x80b05000
After this board is booted successfully.
This back-trace is coming from eqos ethernet driver.
Just to verify I built that driver as module and booted. On boot-up I have not observed any back-trace. Once I inserted the module into kernel by insmod, I could able to see the back-trace.
Can you help me to resolve the back-trace ?