Tool/software: Linux
Hello,
We are working on AM5726 custom board.
We have connected SPI slave, and communicating on that through SPI read/write command.
But we are getting below crash
==============================================================================
[ 77.688365] Length = 32
[ 77.693206] ######################### FINAL Write DONE #####################
[ 77.700590] BUG: unsupported FP instruction in kernel mode
[ 77.706100] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT SMP ARM
[ 77.713523] Modules linked in: ov798cam rpmsg_proto 8021q cbc jitterentropy_rng drbg xfrm_user xfrm4_tunnel ipcomp xfrm_ipcomp esp4 ah4 xhci_pl)
[ 77.779752] CPU: 0 PID: 1126 Comm: ov798_app_spifl Tainted: G O 4.4.32-gadde2ca9f8 #9
[ 77.788744] Hardware name: Generic DRA74X (Flattened Device Tree)
[ 77.794859] task: ed8cb600 ti: eda98000 task.ti: eda98000
[ 77.800280] PC is at vfp_reload_hw+0x30/0x44
[ 77.804566] LR is at __und_usr_fault_32+0x0/0x8
[ 77.809112] pc : [<c000ae2c>] lr : [<c0014240>] psr: a0000013
[ 77.809112] sp : eda99fb0 ip : 00021f3c fp : 00000000
[ 77.820634] r10: eda981f8 r9 : c00142a0 r8 : eda99e30
[ 77.825877] r7 : 00000001 r6 : c0982054 r5 : 00000000 r4 : ec4a40f8
[ 77.832427] r3 : c0982058 r2 : b6e576c2 r1 : ecd08540 r0 : ed2d8b02
[ 77.838978] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
[ 77.846139] Control: 30c5387d Table: adb33400 DAC: fffffffd
[ 77.851905] Process ov798_app_spifl (pid: 1126, stack limit = 0xeda98210)
[ 77.858718] Stack: (0xeda99fb0 to 0xeda9a000)
[ 77.863089] 9fa0: be9658f8 00011940 be9659d0 000b89e8
[ 77.871299] 9fc0: 00000000 b6f2e4c0 b6f0fd00 00011940 be9659d0 be9659e4 b6f3c000 00000000
[ 77.879507] 9fe0: 00021f3c be9658cc b6e6f457 b6e576c2 60000030 ffffffff e1805005 e3a0100f
[ 77.887713] Backtrace: no frame pointer
[ 77.891575] Code: 128aa080 e89a0162 e3110102 0a000003 (eee96a10)
[ 77.897691] ---[ end trace 4d201cb41bd81d96 ]---
[ 77.902325] note: ov798_app_spifl[1126] exited with preempt_count 2
Segmentation fault
==============================================================================
We have gone through kgdb also and in that we are getting
Can you please guide us for the same error?, Do the needful.
Regards,
Prerak