$ make -j$(nproc) CFG_FTRACE_SUPPORT=y CFG_SYSCALL_FTRACE=y CFG_FTRACE_BUF_SIZE=1000000 CFLAGS_ta_arm32=-pg QEMU_VIRTFS_AUTOMOUNT=y run
NW console:
optee: probing for conduit method.
optee: revision 4.2 (af3fb624)
optee: Asynchronous notifications enabled
optee: dynamic shared memory is enabled
optee: initialized driver
NET: Registered PF_PACKET protocol family
9pnet: Installing 9P2000 support
Registering SWP/SWPB emulation handler
rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
rcu: 0-...0: (6 ticks this GP) idle=0174/1/0x40000000 softirq=97/101 fqs=995
rcu: (detected by 1, t=2103 jiffies, g=-1107, q=13 ncpus=2)
SW console:
D/LD: ldelf:176 ELF (f04a0fe7-1f5d-4b9b-abf7-619b85b4ce8c) at 0x123000
So it looks like it hangs as soon as it enters the trusted keys TA.
Commenting out cflags$(sm) += -pg in core/core.mk solves the problem. Adding a few -pg here and there works (for example in Mbed TLS). So I guess we need to find out which core function should not be instrumented.
Platform: QEMUv7
NW console:
SW console:
So it looks like it hangs as soon as it enters the trusted keys TA.
Commenting out
cflags$(sm) += -pgincore/core.mksolves the problem. Adding a few-pghere and there works (for example in Mbed TLS). So I guess we need to find out which core function should not be instrumented.