Analysis of device restart jamming -reboot jamming

Reboot Analysis of stuck problem

The equipment adopts Xintang processor NUC972, The device has a probability of jamming during restart The recurrence rate is very low

Problem phenomenon

equipment IP：192.168.0.89
[ 39.940000] PC is at yaffs_tags_marshall_write+0xc0/0xdc
[ 39.940000] LR is at yaffs2_checkpt_flush_buffer+0x9c/0x294
[ 39.940000] pc : [] lr : [] psr: 60000013
[ 39.940000] [] (yaffs_tags_marshall_write+0x0/0xdc) from [] (yaffs2_checkpt_flush_buffer+0x9c/0x294)
[ 39.940000] r9:c16915ec r8:00000001 r7:c16915f0 r6:0000004d r5:0000a18c
[ 39.940000] r4:c62ea000
[ 39.940000] [] (yaffs2_checkpt_flush_buffer+0x0/0x294) from [] (yaffs_checkpt_close+0x2c/0x130)
[ 39.940000] r7:c16915f0 r6:c62ea000 r5:c6363388 r4:c62ea000
[ 39.940000] [] (yaffs_checkpt_close+0x0/0x130) from [] (yaffs_checkpoint_save+0x140/0x504)
[ 39.940000] r4:c62d93cc r3:00000000
[ 39.940000] [] (yaffs_checkpoint_save+0x0/0x504) from [] (yaffs_flush_super+0x8c/0xa8)
[