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Diffstat (limited to 'results/scraper/launchpad-without-comments/1918149')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1918149 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1918149 b/results/scraper/launchpad-without-comments/1918149 new file mode 100644 index 00000000..ec360a8f --- /dev/null +++ b/results/scraper/launchpad-without-comments/1918149 @@ -0,0 +1,10 @@ +qemu-user reports wrong fault_addr in signal handler + +When a SEGV signal occurs and si_addr of the info struct is nil, qemu still tries to translate the address from host to guest (handle_cpu_signal in accel/tcg/user-exec.c). This means, that the actual signal handler, will receive a fault_addr that is something like 0xffffffffbf709000. + +I was able to get this to happen, by branching to a non canonical address on aarch64. +I used 5.2 (commit: 553032db17). However, building from source, this only seems to happen, if I use the same configure flags as the debian build: + +../configure --static --target-list=aarch64-linux-user --disable-system --enable-trace-backends=simple --disable-linux-io-uring --disable-pie --extra-cflags="-fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2" --extra-ldflags="-Wl,-z,relro -Wl,--as-needed" + +Let me know, if you need more details. \ No newline at end of file |