Zhen Chen
194a7d5a75
MALI: bifrost: Fix a null pointer exception when event tracing is enabled
The issue was reported in https://redmine.rock-chips.com/issues/442097.
The kernel crash log:
[ 10.737137][ T1028] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010
...
[ 10.747955][ T1028] pc : __pi_strlen+0x60/0x84
[ 10.748673][ T1028] lr : trace_event_raw_event_dma_fence+0xe0/0x1e8
...
[ 10.761907][ T1028] Call trace:
[ 10.762198][ T1028] __pi_strlen+0x60/0x84
[ 10.762561][ T1028] dma_fence_init+0xd4/0xfc
[ 10.762951][ T1028] kbasep_kcpu_fence_signal_init+0x6c/0x1b0
[ 10.763454][ T1028] kbase_kcpu_fence_signal_prepare+0x6c/0x134
[ 10.763980][ T1028] kbase_csf_kcpu_queue_enqueue+0x1d0/0x10ec
[ 10.764499][ T1028] kbase_ioctl+0xa80/0xf78
[ 10.764890][ T1028] __arm64_sys_ioctl+0x90/0xc8
[ 10.765296][ T1028] el0_svc_common+0xac/0x1ac
[ 10.765691][ T1028] do_el0_svc+0x1c/0x28
[ 10.766058][ T1028] el0_svc+0x10/0x1c
[ 10.766389][ T1028] el0_sync_handler+0x68/0xac
[ 10.766796][ T1028] el0_sync+0x160/0x180
Change-Id: I68739107dd9486b3a964746583c526a51f68e1ae
Signed-off-by: Zhen Chen <chenzhen@rock-chips.com>