tracing, kasan: Silence Kasan warning in check_stack of stack_tracer
When enabling stack trace via "echo 1 > /proc/sys/kernel/stack_tracer_enabled", the below KASAN warning is triggered: BUG: KASAN: stack-out-of-bounds in check_stack+0x344/0x848 at addr ffffffc0689ebab8 Read of size 8 by task ksoftirqd/4/29 page:ffffffbdc3a27ac0 count:0 mapcount:0 mapping: (null) index:0x0 flags: 0x0() page dumped because: kasan: bad access detected CPU: 4 PID: 29 Comm: ksoftirqd/4 Not tainted 4.5.0-rc1 #129 Hardware name: Freescale Layerscape 2085a RDB Board (DT) Call trace: [<ffffffc000091300>] dump_backtrace+0x0/0x3a0 [<ffffffc0000916c4>] show_stack+0x24/0x30 [<ffffffc0009bbd78>] dump_stack+0xd8/0x168 [<ffffffc000420bb0>] kasan_report_error+0x6a0/0x920 [<ffffffc000421688>] kasan_report+0x70/0xb8 [<ffffffc00041f7f0>] __asan_load8+0x60/0x78 [<ffffffc0002e05c4>] check_stack+0x344/0x848 [<ffffffc0002e0c8c>] stack_trace_call+0x1c4/0x370 [<ffffffc0002af558>] ftrace_ops_no_ops+0x2c0/0x590 [<ffffffc00009f25c>] ftrace...
parent
9a154c89
Please register or sign in to comment