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| H A D | thread.c | 28d6e35a8dd5481da71270c28d8d321e9dbe009f Tue Aug 23 22:36:22 UTC 2022 Jerome Forissier <jerome.forissier@linaro.org> core: stack check: fix debug message
The lower limit for thread stacks printed by print_stack_limits()
when CFG_CORE_DEBUG_CHECK_STACKS=y is incorrect. It needs to be
increased by STACK_CHECK_EXTRA to be consistent with the value
returned by get_stack_soft_limits(). While we're at it, improve
the SP out of range message to make it EMSG() rather than DMSG() and
show the stack limits. This makes it easier to identify in which
stack the pointer was supposed to be.
Here is an example of a stack overflow panic in thread 0:
D/TC:? 0 ldelf_syscall_open_bin:142 Lookup user TA ELF cb3e5ba0-adf1-11e0-998b-0002a5d5c51b (Secure Storage TA)
E/TC:? 0 Stack pointer out of range! 0x7e7bd618 not in [0x7e7bd630 .. 0x7e7bf030]
D/TC:? 0 print_stack_limits:179 tmp [0] 0x7e7c1c90..0x7e7c24b0
D/TC:? 0 print_stack_limits:179 tmp [1] 0x7e7c2ad0..0x7e7c32f0
D/TC:? 0 print_stack_limits:179 tmp [2] 0x7e7c3910..0x7e7c4130
D/TC:? 0 print_stack_limits:179 tmp [3] 0x7e7c4750..0x7e7c4f70
D/TC:? 0 print_stack_limits:184 abt [0] 0x7e7b8710..0x7e7b9330
D/TC:? 0 print_stack_limits:184 abt [1] 0x7e7b9950..0x7e7ba570
D/TC:? 0 print_stack_limits:184 abt [2] 0x7e7bab90..0x7e7bb7b0
D/TC:? 0 print_stack_limits:184 abt [3] 0x7e7bbdd0..0x7e7bc9f0
D/TC:? 0 print_stack_limits:189 thr [0] 0x7e7bd630..0x7e7bf030
D/TC:? 0 print_stack_limits:189 thr [1] 0x7e7bfc70..0x7e7c1670
E/TC:1 0 Panic at core/kernel/thread.c:207 <check_stack_limits>
E/TC:1 0 TEE load address @ 0x7e6e5000
E/TC:1 0 Call stack:
E/TC:1 0 0x7e6f1b10 print_kernel_stack at optee_os/core/arch/arm/kernel/unwind_arm64.c:80
E/TC:1 0 0x7e7071b8 __do_panic at optee_os/core/kernel/panic.c:24
E/TC:1 0 0x7e70cd14 check_stack_limits at optee_os/core/kernel/thread.c:207
E/TC:1 0 0x7e70dcd8 __cyg_profile_func_enter at optee_os/core/kernel/thread.c:237
E/TC:1 0 0x7e766b74 memset at optee_os/lib/libutils/isoc/newlib/memset.c:76
E/TC:1 0 0x7e768928 memzero_explicit at optee_os/lib/libutils/ext/memzero_explicit.c:22
E/TC:1 0 0x7e74de54 zeromem at optee_os/core/lib/libtomcrypt/src/misc/zeromem.c:26 (discriminator 2)
E/TC:1 0 0x7e74ddd8 burn_stack at optee_os/core/lib/libtomcrypt/src/misc/burn_stack.c:24
E/TC:1 0 0x7e74a32c rijndael_ecb_encrypt at optee_os/core/lib/libtomcrypt/src/ciphers/aes/aes.c:454
E/TC:1 0 0x7e743e44 crypto_aes_enc_block at optee_os/core/lib/libtomcrypt/aes.c:45 (discriminator 2)
E/TC:1 0 0x7e6fa1d0 decrypt_block at optee_os/core/crypto/aes-gcm-sw.c:98
E/TC:1 0 0x7e6fa2ec decrypt_pl at optee_os/core/crypto/aes-gcm-sw.c:118 (discriminator 3)
E/TC:1 0 0x7e6fa400 internal_aes_gcm_update_payload_blocks at optee_os/core/crypto/aes-gcm-sw.c:143
E/TC:1 0 0x7e6f93f4 __gcm_update_payload at optee_os/core/crypto/aes-gcm.c:246
E/TC:1 0 0x7e6f9504 operation_final at optee_os/core/crypto/aes-gcm.c:273
E/TC:1 0 0x7e6f9780 __gcm_dec_final at optee_os/core/crypto/aes-gcm.c:328
E/TC:1 0 0x7e6f9840 internal_aes_gcm_dec_final at optee_os/core/crypto/aes-gcm.c:342
E/TC:1 0 0x7e6f9a64 aes_gcm_dec_final at optee_os/core/crypto/aes-gcm.c:500
E/TC:1 0 0x7e6f85cc crypto_authenc_dec_final at optee_os/core/crypto/crypto.c:427
E/TC:1 0 0x7e7352d8 authenc_decrypt_final at optee_os/core/tee/fs_htree.c:511
E/TC:1 0 0x7e736094 tee_fs_htree_read_block at optee_os/core/tee/fs_htree.c:899
E/TC:1 0 0x7e732234 ree_fs_read_primitive at optee_os/core/tee/tee_ree_fs.c:340
E/TC:1 0 0x7e7334e8 read_dent at optee_os/core/tee/fs_dirfile.c:103
E/TC:1 0 0x7e734024 tee_fs_dirfile_open at optee_os/core/tee/fs_dirfile.c:143
E/TC:1 0 0x7e731ab4 open_dirh at optee_os/core/tee/tee_ree_fs.c:552
E/TC:1 0 0x7e731b50 get_dirh at optee_os/core/tee/tee_ree_fs.c:573
E/TC:1 0 0x7e732e38 ree_fs_open at optee_os/core/tee/tee_ree_fs.c:626
E/TC:1 0 0x7e72ec60 tadb_open at optee_os/core/tee/tadb.c:227
E/TC:1 0 0x7e72f3a0 tee_tadb_open at optee_os/core/tee/tadb.c:246 (discriminator 1)
E/TC:1 0 0x7e72ff7c tee_tadb_ta_open at optee_os/core/tee/tadb.c:643
E/TC:1 0 0x7e70fed8 secstor_ta_open at optee_os/core/kernel/secstor_ta.c:19
E/TC:1 0 0x7e706648 ldelf_syscall_open_bin at optee_os/core/kernel/ldelf_syscalls.c:145
E/TC:1 0 0x7e6f54c0 tee_svc_do_call at optee_os/core/arch/arm/tee/arch_svc_a64.S:140
E/TC:1 0 0x7e6ec780 thread_svc_handler at optee_os/core/arch/arm/kernel/thread.c:1104 (discriminator 4)
E/TC:1 0 0x7e6ea35c el0_svc at optee_os/core/arch/arm/kernel/thread_a64.S:825
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
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