bitcoin-qt/bitcoind crashes upon startup of crypto/sha256_shani. Illegal instruction #18456

issue rebroad opened this issue on March 28, 2020

rebroad commented at 11:52 AM on March 28, 2020: contributor

Version 0.19.1 compiles fine. Configured with debugging enabled on Ubuntu 18.04.3 LTS

When running with gdb:-

(gdb) run
Starting program: /home/bitcoin/src/qt/bitcoind
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGILL, Illegal instruction.
0x0000555555ebddf8 in _mm_set_epi64x (__q0=289644378169868803, __q1=868365760874482187) at /usr/lib/gcc/x86_64-linux-gnu/7/include/emmintrin.h:592
592       return __extension__ (__m128i)(__v2di){ __q0, __q1 };
(gdb) bt
[#0](/bitcoin-bitcoin/0/)  0x0000555555ebddf8 in _mm_set_epi64x (__q0=289644378169868803, __q1=868365760874482187) at /usr/lib/gcc/x86_64-linux-gnu/7/include/emmintrin.h:592
[#1](/bitcoin-bitcoin/1/)  __static_initialization_and_destruction_0 (__initialize_p=1, __priority=65535) at crypto/sha256_shani.cpp:19
[#2](/bitcoin-bitcoin/2/)  0x0000555555ebdea9 in _GLOBAL__sub_I__ZN12sha256_shani9TransformEPjPKhm () at crypto/sha256_shani.cpp:357
[#3](/bitcoin-bitcoin/3/)  0x0000555555f1f54d in __libc_csu_init ()
[#4](/bitcoin-bitcoin/4/)  0x00007ffff3879b28 in __libc_start_main (main=0x5555555c1ffc <main(int, char**)>, argc=1, argv=0x7fffffffe478, init=0x555555f1f500 <__libc_csu_init>,
    fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffe468) at ../csu/libc-start.c:266
[#5](/bitcoin-bitcoin/5/)  0x00005555555c1e7a in _start ()

rebroad added the label Bug on Mar 28, 2020
rebroad renamed this:
~~bitcoin-qt crashes upon startup. Illegal instruction~~
bitcoin-qt/bitcoind crashes upon startup. Illegal instruction
on Mar 28, 2020
elichai commented at 9:34 AM on March 29, 2020: contributor
hmm looks like it enabled sha-ni even though your cpu doesn't support it. Could you please paste the following:
1. all the commands you ran to compile the code.
2. cat /proc/cpuinfo
3. gcc -march=native -dM -E - </dev/null

rebroad commented at 12:43 AM on March 30, 2020: contributor

the commands as documented in built-unix.md
4 instances of (but different processor number)

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 28
model name      : Intel(R) Atom(TM) CPU  330   @ 1.60GHz
stepping        : 2
microcode       : 0x219
cpu MHz         : 1599.992
cache size      : 512 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts nopl cpuid aperfmperf pni dtes64 monitor ds_cpl tm2 ssse3 cx16 xtpr pdcm movbe lahf_lm dtherm
bugs            :
bogomips        : 3199.92
clflush size    : 64
cache_alignment : 64
address sizes   : 32 bits physical, 48 bits virtual
power management:

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#define __UINT_FAST64_MAX__ 0xffffffffffffffffUL
#define __SIG_ATOMIC_TYPE__ int
#define __DBL_MIN_10_EXP__ (-307)
#define __FINITE_MATH_ONLY__ 0
#define __GNUC_PATCHLEVEL__ 0
#define __FLT32_HAS_DENORM__ 1
#define __UINT_FAST8_MAX__ 0xff
#define __has_include(STR) __has_include__(STR)
#define __DEC64_MAX_EXP__ 385
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#define __FLT_HAS_INFINITY__ 1
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#define __SSE2__ 1
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#define __FLT32X_DIG__ 15
#define __LDBL_MANT_DIG__ 64
#define __DBL_HAS_QUIET_NAN__ 1
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#define __FLT64X_MAX__ 1.18973149535723176502126385303097021e+4932F64x
#define __SIG_ATOMIC_MIN__ (-__SIG_ATOMIC_MAX__ - 1)
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#define __UINTPTR_MAX__ 0xffffffffffffffffUL
#define __INT_FAST64_WIDTH__ 64
#define __DEC64_MIN_EXP__ (-382)
#define __FLT32_DECIMAL_DIG__ 9
#define __INT_FAST64_MAX__ 0x7fffffffffffffffL
#define __GCC_ATOMIC_TEST_AND_SET_TRUEVAL 1
#define __FLT_DIG__ 6
#define __FLT32_HAS_INFINITY__ 1
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#define __INT_LEAST64_MAX__ 0x7fffffffffffffffL
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#define __UINT8_C(c) c
#define __FLT64_MAX_EXP__ 1024
#define __atom__ 1
#define __INT_LEAST32_TYPE__ int
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#define __UINT64_TYPE__ long unsigned int
#define __FLT128_HAS_QUIET_NAN__ 1
#define __INT_FAST8_TYPE__ signed char
#define __FLT64X_MIN__ 3.36210314311209350626267781732175260e-4932F64x
#define __GNUC_STDC_INLINE__ 1
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#define __FLT32_EPSILON__ 1.19209289550781250000000000000000000e-7F32
#define __DBL_DECIMAL_DIG__ 17
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#define __FLT32X_MAX__ 1.79769313486231570814527423731704357e+308F32x
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#define __UINT_FAST32_TYPE__ long unsigned int
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#define __INT32_TYPE__ int
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#define __FLT64_MIN__ 2.22507385850720138309023271733240406e-308F64
#define __INT_LEAST32_WIDTH__ 32
#define __INTMAX_TYPE__ long int
#define __DEC128_MAX_EXP__ 6145
#define __FLT32X_HAS_QUIET_NAN__ 1
#define __ATOMIC_CONSUME 1
#define __GNUC_MINOR__ 5
#define __INT_FAST16_WIDTH__ 64
#define __UINTMAX_MAX__ 0xffffffffffffffffUL
#define __DEC32_MANT_DIG__ 7
#define __FLT32X_DENORM_MIN__ 4.94065645841246544176568792868221372e-324F32x
#define __DBL_MAX_10_EXP__ 308
#define __LDBL_DENORM_MIN__ 3.64519953188247460252840593361941982e-4951L
#define __INT16_C(c) c
#define __STDC__ 1
#define __PTRDIFF_TYPE__ long int
#define __ATOMIC_SEQ_CST 5
#define __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 1
#define __UINT32_TYPE__ unsigned int
#define __FLT32X_MIN_10_EXP__ (-307)
#define __UINTPTR_TYPE__ long unsigned int
#define __DEC64_SUBNORMAL_MIN__ 0.000000000000001E-383DD
#define __DEC128_MANT_DIG__ 34
#define __LDBL_MIN_10_EXP__ (-4931)
#define __FLT128_EPSILON__ 1.92592994438723585305597794258492732e-34F128
#define __SIZEOF_LONG_LONG__ 8
#define __FLT128_DECIMAL_DIG__ 36
#define __GCC_ATOMIC_LLONG_LOCK_FREE 2
#define __FLT32X_MIN__ 2.22507385850720138309023271733240406e-308F32x
#define __LDBL_DIG__ 18
#define __FLT_DECIMAL_DIG__ 9
#define __UINT_FAST16_MAX__ 0xffffffffffffffffUL
#define __GCC_ATOMIC_SHORT_LOCK_FREE 2
#define __INT_LEAST64_WIDTH__ 64
#define __SSE3__ 1
#define __UINT_FAST8_TYPE__ unsigned char
#define __ATOMIC_ACQ_REL 4
#define __ATOMIC_RELEASE 3`

MarcoFalke added this to the milestone 0.20.0 on Mar 30, 2020
MarcoFalke added the label Utils/log/libs on Mar 30, 2020
MarcoFalke renamed this:
~~bitcoin-qt/bitcoind crashes upon startup. Illegal instruction~~
bitcoin-qt/bitcoind crashes upon startup of crypto/sha256_shani. Illegal instruction
on Mar 30, 2020
MarcoFalke commented at 12:53 AM on March 30, 2020: member

Added milestone 0.20.0
rebroad commented at 2:51 PM on April 3, 2020: contributor

@MarcoFalke what is the fix for this please? Or, do you know at what version it was introduced?
MarcoFalke commented at 3:43 PM on April 3, 2020: member

@rebroad Sorry, I don't have CPU hardware background. You could bisect to find out when it was introduced.
sipa commented at 4:32 AM on April 7, 2020: member
~~Can you post the initial lines of debug.log? In particular lines like "Using the 'shani(1way,2way)' SHA256 implementation" or similar things mentioning SHA256.~~

EDIT: nevermind, this is in a global constructor, before main() runs.

I'm very confused here, because:
- It's crashing in an SSE2 instruction, which your CPU supports
- It's running the SHA-NI based SHA256 implementation, which shouldn't even be tried on a system that doesn't support SSE4 (like yours).
sipa commented at 5:29 AM on April 7, 2020: member

@rebroad Please try #18553
rebroad commented at 7:43 AM on April 12, 2020: contributor

@sipa yes, that fixed it
laanwj referenced this in commit ce4e1f0282 on Apr 22, 2020
laanwj closed this on Apr 22, 2020
sidhujag referenced this in commit a4fe4e7bb9 on Apr 23, 2020
codeofalltrades referenced this in commit 8736fc78be on May 27, 2021
PastaPastaPasta referenced this in commit f66330da12 on Dec 22, 2021
PastaPastaPasta referenced this in commit 34ad1fd1a8 on Dec 22, 2021
PastaPastaPasta referenced this in commit d4279129c0 on Dec 22, 2021
PastaPastaPasta referenced this in commit b330a1adbd on Dec 28, 2021
DrahtBot locked this on Feb 15, 2022

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#1 JSON-RPC support for mobile devices ("ultra-lightweight" clients)#2 Long-term, safe, store-of-value #3 Encrypt wallet #4 Export/Import wallet in a human readable, future-proof format #5 Make the version number the protocol version and not the client version #18553 Avoid non-trivial global constants in SHA-NI code