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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 16:52:07 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 16:52:17 +0200 |
| commit | 9260319e7411ff8281700a532caa436f40120ec4 (patch) | |
| tree | 2f6bfe5f3458dd49d328d3a9eb508595450adec0 /gitlab/issues/target_ppc/host_missing/accel_missing/1361.toml | |
| parent | 225caa38269323af1bfc2daadff5ec8bd930747f (diff) | |
| download | emulator-bug-study-9260319e7411ff8281700a532caa436f40120ec4.tar.gz emulator-bug-study-9260319e7411ff8281700a532caa436f40120ec4.zip | |
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Diffstat (limited to 'gitlab/issues/target_ppc/host_missing/accel_missing/1361.toml')
| -rw-r--r-- | gitlab/issues/target_ppc/host_missing/accel_missing/1361.toml | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/gitlab/issues/target_ppc/host_missing/accel_missing/1361.toml b/gitlab/issues/target_ppc/host_missing/accel_missing/1361.toml deleted file mode 100644 index a3fde8eb..00000000 --- a/gitlab/issues/target_ppc/host_missing/accel_missing/1361.toml +++ /dev/null @@ -1,28 +0,0 @@ -id = 1361 -title = "ppc64le linux user emulation w/ 64KiB pages seems broken since v5.0.0" -state = "opened" -created_at = "2022-12-11T07:09:13.156Z" -closed_at = "n/a" -labels = ["linux-user", "target: ppc"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1361" -host-os = "Various Linux (Ubuntu, Debian under WSL)" -host-arch = "x86" -qemu-version = "See below" -guest-os = "Linux" -guest-arch = "ppc64el" -description = """[Our (snmalloc's)](https://github.com/microsoft/snmalloc) CI includes running a PowerPC64 little-endian Linux build inside qemu, running with 64KiB pages as, at least, Debian runs them by default. As reported [over there](https://github.com/microsoft/snmalloc/issues/576), this broke when GitHub's CI runners moved from Ubuntu Focal (20.04) to Jammy (22.04), bringing qemu from v4.2 to v6.2. - -The failing test case appears to die of an erroneous `SIGSEGV` `SEGV_MAPERR`: -``` ---- SIGSEGV {si_signo=SIGSEGV, si_code=1, si_addr=0x0000004001be5000} --- -``` -despite that address nominally being mapped by the last memory syscall to touch that area -``` -openat(AT_FDCWD,"/usr/powerpc64le-linux-gnu/lib/libstdc++.so.6",O_RDONLY|O_CLOEXEC) = 4 -[...] -mmap(0x0000004001bd0000,131072,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,4,0x2f0000) = 0x4001bd0000 -``` - -Bisection reveals that the breakage first occurred with 4dcf078f094d436866ef793aa25c96fba85ac8d0, though I suspect this is merely the commit that exposes some underlying bug rather than being the actual root cause.""" -reproduce = """Run a ppc64el Linux executable under `qemu-user` with `-p 65536`.""" -additional = """Please advise what more would be useful.""" |