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authorChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:07 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-05-30 16:52:17 +0200
commit9260319e7411ff8281700a532caa436f40120ec4 (patch)
tree2f6bfe5f3458dd49d328d3a9eb508595450adec0 /gitlab/issues/target_missing/host_missing/accel_missing/2686.toml
parent225caa38269323af1bfc2daadff5ec8bd930747f (diff)
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@@ -1,58 +0,0 @@
-id = 2686
-title = "rng-seed addition causing test_loongarch64_virt.py to hang in EFI startup"
-state = "closed"
-created_at = "2024-11-18T19:53:27.441Z"
-closed_at = "2024-12-03T18:00:27.975Z"
-labels = ["kind::Bug", "workflow::Patch available"]
-url = "https://gitlab.com/qemu-project/qemu/-/issues/2686"
-host-os = "Fedora 41"
-host-arch = "x86_64"
-qemu-version = "git d9bd1ccbf1d84d872aed684c65fec33814b8ac1b"
-guest-os = "n/a"
-guest-arch = "n/a"
-description = """Since the rng-seed addition, the test_loongarch64_virt.py test will periodically hang.
-
-git bisect blames this
-
-```
-commit d9bd1ccbf1d84d872aed684c65fec33814b8ac1b
-Author: Jason A. Donenfeld <Jason@zx2c4.com>
-Date:   Thu Sep 5 17:33:16 2024 +0200
-
-    hw/loongarch: virt: pass random seed to fdt
-    
-    If the FDT contains /chosen/rng-seed, then the Linux RNG will use it to
-    initialize early. Set this using the usual guest random number
-    generation function.
-    
-    This is the same procedure that's done in b91b6b5a2c ("hw/microblaze:
-    pass random seed to fdt"), e4b4f0b71c ("hw/riscv: virt: pass random seed
-    to fdt"), c6fe3e6b4c ("hw/openrisc: virt: pass random seed to fdt"),
-    67f7e426e5 ("hw/i386: pass RNG seed via setup_data entry"), c287941a4d
-    ("hw/rx: pass random seed to fdt"), 5e19cc68fb ("hw/mips: boston: pass
-    random seed to fdt"), 6b23a67916 ("hw/nios2: virt: pass random seed to fdt")
-    c4b075318e ("hw/ppc: pass random seed to fdt"), and 5242876f37
-    ("hw/arm/virt: dt: add rng-seed property").
-    
-    These earlier commits later were amended to rerandomize the RNG seed on
-    snapshot load, but the LoongArch code somehow already does that, despite
-    not having this patch here, presumably due to some lucky copy and
-    pasting.
-    
-    Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
-    Reviewed-by: Song Gao <gaosong@loongson.cn>
-    Message-Id: <20240905153316.2038769-1-Jason@zx2c4.com>
-    Signed-off-by: Song Gao <gaosong@loongson.cn>
-```
-
-When it hangs, test_loongarch64_virt.py will get stuck waiting for serial console output from the guest.
-
-Looking at the console.log file shows it to be completely empty. 
-
-This appears to indicate it has hung before EDK has even initialized, as it has not even printed the 'Entering C environment' message"""
-reproduce = """1. ./configure --target-list=loongarch64-softmmu
-2. make -j 20
-3. n=0 ; while true ; do n=$(expr $n + 1); echo $n ; QEMU_TEST_QEMU_BINARY=./build/qemu-system-loongarch64  PYTHONPATH=./python ./tests/functional/test_loongarch64_virt.py  ; done
-
-Most commonly it will hang within 10 iterations, very occasionally needing upto 25"""
-additional = "n/a"