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| H A D | tee_rpmb_fs.c | ce9a20c120ffc0348421d0d6778968bdcdbb7f60 Thu Jul 30 13:01:02 UTC 2020 Jerome Forissier <jerome@forissier.org> rmpb: fix infinite recursion in dump_fat() when CFG_TEE_CORE_LOG_LEVEL=4
When CFG_TEE_CORE_LOG_LEVEL=4 and CFG_RPMB_FS=y, the TEE core crashes
with a dead stack canary message:
E/TC:0 0 Dead canary at end of 'stack_abt[3]'
E/TC:0 0 Panic at core/arch/arm/kernel/thread.c:192 <thread_check_canaries>
E/TC:0 0 TEE load address @ 0x1bd0f000
E/TC:0 0 Call stack:
E/TC:0 0 0x1bd17b3d print_kernel_stack at optee_os/core/arch/arm/kernel/unwind_arm32.c:452
E/TC:0 0 0x1bd23a07 __do_panic at optee_os/core/kernel/panic.c:32 (discriminator 1)
E/TC:0 0 0x1bd120cb thread_check_canaries at optee_os/core/arch/arm/kernel/thread.c:188 (discriminator 2)
E/TC:0 0 0x1bd12c1f thread_state_suspend at optee_os/core/arch/arm/kernel/thread.c:754
E/TC:0 0 0x1bd14610 thread_rpc at optee_os/core/arch/arm/kernel/thread_optee_smc_a32.S:227
The issue happens to be with the debug function dump_fat() which causes
infinite recursion. Fix it by doing nothing until after RPMB
initialization has completed.
Fixes: 5f68d7848fe8 ("core: RPMB FS: Caching for FAT FS entries")
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
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