diff options
Diffstat (limited to 'results/classifier/deepseek-r1:32b/output/instruction/2487')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/output/instruction/2487 | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/output/instruction/2487 b/results/classifier/deepseek-r1:32b/output/instruction/2487 new file mode 100644 index 000000000..c5d0c2770 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/output/instruction/2487 @@ -0,0 +1,71 @@ + + + +qemu-x86_64: qemu/tcg/ppc/tcg-target.c.inc:1777:tcg_out_test: code should not be reached +Description of problem: +Using this basic test file: + +```c +int +main (void) +{ + return 0; +} +``` + +compiled into a static executable using an x86_64 toolchain (glibc or musl both tested), + +``` +gwyn ~/qemu-bug # file test1 +test1: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), static-pie linked, with debug_info, not stripped + +gwyn ~/qemu-bug # file test2 +test2: ELF 64-bit LSB executable, x86-64, version 1 (GNU/Linux), statically linked, BuildID[sha1]=276dc49ee7cbd3b760e24761bf9fb9e1cc4b4349, for GNU/Linux 3.2.0, not stripped +``` + +Using QEMU from 15957eb9efe2da67c796612cead95cba28ba9bda or newer: + +``` +gwyn ~/qemu-bug # ../emus-ppc64/bin/qemu-x86_64 --version +qemu-x86_64 version 9.0.50 (v9.0.0-521-g15957eb9ef-dirty) +Copyright (c) 2003-2024 Fabrice Bellard and the QEMU Project developers +``` + +QEMU crashes: + +``` +gwyn ~/qemu-bug # ../emus-ppc64/bin/qemu-x86_64 ./test2 +** +ERROR:/root/qemu/tcg/ppc/tcg-target.c.inc:1777:tcg_out_test: code should not be reached +Bail out! ERROR:/root/qemu/tcg/ppc/tcg-target.c.inc:1777:tcg_out_test: code should not be reached +Aborted +``` +Steps to reproduce: +1. Build QEMU user for ppc64 (may affect other hosts) using commit 15957eb9efe2da67c796612cead95cba28ba9bda or newer. +2. Run any simple x86_64 executable. +3. Observe the crash. +Additional information: +Bisected to here: + +``` +commit 15957eb9efe2da67c796612cead95cba28ba9bda +Author: Paolo Bonzini <pbonzini@redhat.com> +Date: Fri Oct 27 05:57:31 2023 +0200 + + target/i386: use TSTEQ/TSTNE to test low bits + + When testing the sign bit or equality to zero of a partial register, it + is useful to use a single TSTEQ or TSTNE operation. It can also be used + to test the parity flag, using bit 0 of the population count. + + Do not do this for target_ulong-sized values however; the optimizer would + produce a comparison against zero anyway, and it avoids shifts by 64 + which are undefined behavior. + + Reviewed-by: Richard Henderson <richard.henderson@linaro.org> + Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> + + target/i386/tcg/emit.c.inc | 5 ++--- + target/i386/tcg/translate.c | 28 ++++++++++++++++++++-------- + 2 files changed, 22 insertions(+), 11 deletions(-) +``` |