False positives in constant-time tests when using MSan on Clang >= 16 #1516

issue real-or-random openend this issue on April 9, 2024
  1. real-or-random commented at 2:19 pm on April 9, 2024: contributor

    (Description partly copied from #1512 (comment))

    The default of what is considered a “use” of uninitialized memory was changed in clang 16. Returning an uninitialized variables from a function, or passing uninitialized values to a function as a parameter is now considered, and MSan will report it by default. See the Clang 16.0.09 Release Notes:

    -fsanitize-memory-param-retval is turned on by default. With -fsanitize=memory, passing uninitialized variables to functions and returning uninitialized variables from functions is more aggressively reported. -fno-sanitize-memory-param-retval restores the previous behavior.

    This makes sense for actual memory checking, in the sense that uninitialized memory at the boundary of a function call should probably be considered a bug or at least a smell. But that’s certainly not what we want if we (ab)use MSan for constant-time checking, and this gives us false positives.

    We should pass -fno-sanitize-memory-param-retval to clang >=16, but probably only for the ctime_test target.

      0> ./ctime_tests
  1==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
  2    [#0](/bitcoin-core-secp256k1/0/) 0x77094683e2fa in secp256k1_ecdsa_sign_inner /home/tim/bs/dev/secp256k1/src/secp256k1.c:544:5
  3    [#1](/bitcoin-core-secp256k1/1/) 0x77094683c06f in secp256k1_ecdsa_sign /home/tim/bs/dev/secp256k1/src/secp256k1.c:556:11
  4    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a11f in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:106:11
  5    [#3](/bitcoin-core-secp256k1/3/) 0x5cb76630a11f in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
  6    [#4](/bitcoin-core-secp256k1/4/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
  7    [#5](/bitcoin-core-secp256k1/5/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
  8    [#6](/bitcoin-core-secp256k1/6/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
  9
 10SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:544:5 in secp256k1_ecdsa_sign_inner
 11==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 12    [#0](/bitcoin-core-secp256k1/0/) 0x77094685787c in secp256k1_ecdh /home/tim/bs/dev/secp256k1/src/modules/ecdh/main_impl.h:69:1
 13    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a1bd in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:115:11
 14    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a1bd in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 15    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 16    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 17    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 18
 19SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/ecdh/main_impl.h:69:1 in secp256k1_ecdh
 20==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 21    [#0](/bitcoin-core-secp256k1/0/) 0x77094683e2fa in secp256k1_ecdsa_sign_inner /home/tim/bs/dev/secp256k1/src/secp256k1.c:544:5
 22    [#1](/bitcoin-core-secp256k1/1/) 0x77094685aadf in secp256k1_ecdsa_sign_recoverable /home/tim/bs/dev/secp256k1/src/modules/recovery/main_impl.h:132:11
 23    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a232 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:123:11
 24    [#3](/bitcoin-core-secp256k1/3/) 0x5cb76630a232 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 25    [#4](/bitcoin-core-secp256k1/4/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 26    [#5](/bitcoin-core-secp256k1/5/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 27    [#6](/bitcoin-core-secp256k1/6/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 28
 29SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:544:5 in secp256k1_ecdsa_sign_inner
 30==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 31    [#0](/bitcoin-core-secp256k1/0/) 0x77094683e43f in secp256k1_ec_seckey_verify /home/tim/bs/dev/secp256k1/src/secp256k1.c:570:1
 32    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a2e7 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:132:11
 33    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a2e7 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 34    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 35    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 36    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 37
 38SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:570:1 in secp256k1_ec_seckey_verify
 39==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 40    [#0](/bitcoin-core-secp256k1/0/) 0x77094683f05a in secp256k1_ec_seckey_negate /home/tim/bs/dev/secp256k1/src/secp256k1.c:618:1
 41    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a343 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:137:11
 42    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a343 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 43    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 44    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 45    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 46
 47SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:618:1 in secp256k1_ec_seckey_negate
 48==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 49    [#0](/bitcoin-core-secp256k1/0/) 0x770946840027 in secp256k1_ec_seckey_tweak_add_helper /home/tim/bs/dev/secp256k1/src/secp256k1.c:648:5
 50    [#1](/bitcoin-core-secp256k1/1/) 0x77094683f6ed in secp256k1_ec_seckey_tweak_add /home/tim/bs/dev/secp256k1/src/secp256k1.c:659:12
 51    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a3b7 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:143:11
 52    [#3](/bitcoin-core-secp256k1/3/) 0x5cb76630a3b7 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 53    [#4](/bitcoin-core-secp256k1/4/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 54    [#5](/bitcoin-core-secp256k1/5/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 55    [#6](/bitcoin-core-secp256k1/6/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 56
 57SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:648:5 in secp256k1_ec_seckey_tweak_add_helper
 58==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 59    [#0](/bitcoin-core-secp256k1/0/) 0x77094683fb54 in secp256k1_ec_seckey_tweak_add /home/tim/bs/dev/secp256k1/src/secp256k1.c:665:1
 60    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a3b7 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:143:11
 61    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a3b7 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 62    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 63    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 64    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 65
 66SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:665:1 in secp256k1_ec_seckey_tweak_add
 67==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 68    [#0](/bitcoin-core-secp256k1/0/) 0x770946840dc4 in secp256k1_ec_seckey_tweak_mul /home/tim/bs/dev/secp256k1/src/secp256k1.c:713:1
 69    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a42b in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:149:11
 70    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a42b in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 71    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 72    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 73    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 74
 75SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:713:1 in secp256k1_ec_seckey_tweak_mul
 76==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 77    [#0](/bitcoin-core-secp256k1/0/) 0x77094685fd09 in secp256k1_keypair_create /home/tim/bs/dev/secp256k1/src/modules/extrakeys/main_impl.h:212:1
 78    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a48f in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:156:11
 79    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a48f in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 80    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 81    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 82    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 83
 84SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/extrakeys/main_impl.h:212:1 in secp256k1_keypair_create
 85==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 86    [#0](/bitcoin-core-secp256k1/0/) 0x770946840027 in secp256k1_ec_seckey_tweak_add_helper /home/tim/bs/dev/secp256k1/src/secp256k1.c:648:5
 87    [#1](/bitcoin-core-secp256k1/1/) 0x770946860c1a in secp256k1_keypair_xonly_tweak_add /home/tim/bs/dev/secp256k1/src/modules/extrakeys/main_impl.h:273:12
 88    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a4f6 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:162:11
 89    [#3](/bitcoin-core-secp256k1/3/) 0x5cb76630a4f6 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 90    [#4](/bitcoin-core-secp256k1/4/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 91    [#5](/bitcoin-core-secp256k1/5/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
 92    [#6](/bitcoin-core-secp256k1/6/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
 93
 94SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/secp256k1.c:648:5 in secp256k1_ec_seckey_tweak_add_helper
 95==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
 96    [#0](/bitcoin-core-secp256k1/0/) 0x77094685fd09 in secp256k1_keypair_create /home/tim/bs/dev/secp256k1/src/modules/extrakeys/main_impl.h:212:1
 97    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a5ce in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:175:11
 98    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a5ce in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
 99    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
100    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
101    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
102
103SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/extrakeys/main_impl.h:212:1 in secp256k1_keypair_create
104==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
105    [#0](/bitcoin-core-secp256k1/0/) 0x770946863ca2 in secp256k1_schnorrsig_sign_internal /home/tim/bs/dev/secp256k1/src/modules/schnorrsig/main_impl.h:193:1
106    [#1](/bitcoin-core-secp256k1/1/) 0x7709468619ab in secp256k1_schnorrsig_sign32 /home/tim/bs/dev/secp256k1/src/modules/schnorrsig/main_impl.h:197:12
107    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a630 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:178:11
108    [#3](/bitcoin-core-secp256k1/3/) 0x5cb76630a630 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
109    [#4](/bitcoin-core-secp256k1/4/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
110    [#5](/bitcoin-core-secp256k1/5/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
111    [#6](/bitcoin-core-secp256k1/6/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
112
113SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/schnorrsig/main_impl.h:193:1 in secp256k1_schnorrsig_sign_internal
114==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
115    [#0](/bitcoin-core-secp256k1/0/) 0x770946871648 in secp256k1_ellswift_create /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:487:1
116    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a693 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:185:11
117    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a693 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
118    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
119    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
120    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
121
122SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:487:1 in secp256k1_ellswift_create
123==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
124    [#0](/bitcoin-core-secp256k1/0/) 0x770946871648 in secp256k1_ellswift_create /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:487:1
125    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a6f7 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:190:11
126    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a6f7 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
127    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
128    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
129    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
130
131SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:487:1 in secp256k1_ellswift_create
132==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
133    [#0](/bitcoin-core-secp256k1/0/) 0x7709468770b2 in secp256k1_ellswift_xdh /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1
134    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a7af in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:197:15
135    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a7af in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
136    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
137    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
138    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
139
140SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1 in secp256k1_ellswift_xdh
141==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
142    [#0](/bitcoin-core-secp256k1/0/) 0x7709468770b2 in secp256k1_ellswift_xdh /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1
143    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a84c in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:203:15
144    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a84c in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
145    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
146    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
147    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
148
149SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1 in secp256k1_ellswift_xdh
150==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
151    [#0](/bitcoin-core-secp256k1/0/) 0x7709468770b2 in secp256k1_ellswift_xdh /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1
152    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a8e0 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:197:15
153    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a8e0 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
154    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
155    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
156    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
157
158SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1 in secp256k1_ellswift_xdh
159==18035==WARNING: MemorySanitizer: use-of-uninitialized-value
160    [#0](/bitcoin-core-secp256k1/0/) 0x7709468770b2 in secp256k1_ellswift_xdh /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1
161    [#1](/bitcoin-core-secp256k1/1/) 0x5cb76630a979 in run_tests /home/tim/bs/dev/secp256k1/src/ctime_tests.c:203:15
162    [#2](/bitcoin-core-secp256k1/2/) 0x5cb76630a979 in main /home/tim/bs/dev/secp256k1/src/ctime_tests.c:57:5
163    [#3](/bitcoin-core-secp256k1/3/) 0x770946518ccf  (/usr/lib/libc.so.6+0x25ccf) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
164    [#4](/bitcoin-core-secp256k1/4/) 0x770946518d89 in __libc_start_main (/usr/lib/libc.so.6+0x25d89) (BuildId: c0caa0b7709d3369ee575fcd7d7d0b0fc48733af)
165    [#5](/bitcoin-core-secp256k1/5/) 0x5cb766271254 in _start (/home/tim/bs/dev/secp256k1/.libs/ctime_tests+0x31254) (BuildId: b302b3c7acd04fb3473e01ac13d3e3e0eb931f49)
166
167SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/tim/bs/dev/secp256k1/src/modules/ellswift/main_impl.h:588:1 in secp256k1_ellswift_xdh
168MemorySanitizer: 18 warnings reported.

    cc @hebasto

  2. real-or-random added the label assurance on Apr 9, 2024
  3. real-or-random added the label build on Apr 9, 2024
  4. real-or-random added the label side-channel on Apr 9, 2024
  5. real-or-random referenced this in commit 1791f6fce4 on May 27, 2024
  6. real-or-random closed this on Jun 10, 2024


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