diff options
| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-21 21:21:26 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-21 21:21:26 +0200 |
| commit | 4b927bc37359dec23f67d3427fc982945f24f404 (patch) | |
| tree | 245449ef9146942dc7fffd0235b48b7e70a00bf2 /gitlab/issues/target_missing/host_missing/accel_missing/1696.toml | |
| parent | aa8bd79cec7bf6790ddb01d156c2ef2201abbaab (diff) | |
| download | emulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.tar.gz emulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.zip | |
add gitlab issues in toml format
Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/1696.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/1696.toml | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/1696.toml b/gitlab/issues/target_missing/host_missing/accel_missing/1696.toml new file mode 100644 index 00000000..e581f156 --- /dev/null +++ b/gitlab/issues/target_missing/host_missing/accel_missing/1696.toml @@ -0,0 +1,47 @@ +id = 1696 +title = "Linux kernel hangs rarely when booting on the latest qemu" +state = "closed" +created_at = "2023-06-08T14:54:10.244Z" +closed_at = "2023-06-22T14:01:51.130Z" +labels = [] +url = "https://gitlab.com/qemu-project/qemu/-/issues/1696" +host-os = "Fedora 37, 38 and Rawhide" +host-arch = "x86-64" +qemu-version = "qemu-system-x86-8.0.0-4.fc39.x86_64" +guest-os = "Linux" +guest-arch = "x86_64" +description = """(Downstream bug: https://bugzilla.redhat.com/show_bug.cgi?id=2213346) + +In Fedora we have noticed that the latest Linux kernel (rarely) hangs when booting +on the latest qemu. It hangs after printing: + +``` +[ 0.070120] x86/cpu: User Mode Instruction Prevention (UMIP) activated +[ 0.070120] Last level iTLB entries: 4KB 512, 2MB 255, 4MB 127 +[ 0.070120] Last level dTLB entries: 4KB 512, 2MB 255, 4MB 127, 1GB 0 +[ 0.070120] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization +[ 0.070120] Spectre V2 : Mitigation: Retpolines +[ 0.070120] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch +[ 0.070120] Spectre V2 : Spectre v2 / SpectreRSB : Filling RSB on VMEXIT +[ 0.070120] Spectre V2 : Enabling Speculation Barrier for firmware calls +[ 0.070120] RETBleed: Mitigation: untrained return thunk +[ 0.070120] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier +[ 0.070120] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl +[ 0.070120] Freeing SMP alternatives memory: 48K +``` + +The next line which would be printed (if it didn't hang) is: + +``` +[ 0.070794] smpboot: CPU0: AMD Ryzen 9 3900X 12-Core Processor (family: 0x17, model: 0x71, stepping: 0x0) +``` + +We've seen this hang on both AMD and Intel. It probably happens one in every 300 boots.""" +reproduce = """By far the easiest way to reproduce this is to just run guestfish in a loop: + +``` +$ while guestfish -a /dev/null -v run >& /tmp/log; do echo -n . ; done +```""" +additional = """The full qemu command is rather long but you can find it in this log file: + +https://bugzilla-attachments.redhat.com/attachment.cgi?id=1969620""" |