Date: Fri, 09 May 2025 23:23:57 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 286703] During bsdinstall, pkg hangs outputting to serial console Message-ID: <bug-286703-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286703 Bug ID: 286703 Summary: During bsdinstall, pkg hangs outputting to serial console Product: Base System Version: 14.2-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: rpokala@panasas.com Platform: AMD EPYC 9xx5 CPU (aka "Turin", aka "Zen5"). The serial console is uart.1 (0x2f8), which is connected to the BMC's Serial-Over-LAN service. To install our system, we boot from LAN. The bootloader comes up, finds and loads the kernel and pre-load modules, and boots into an NFS root filesystem. It then runs `bsdinstall' with a pre-generated config file: > bsdinstall script /bsdinstall.cfg The install begins normally: it finds the NICs and storage devices, nukes installation target and creates a new ZFS root there, expands the base system tarball (releng/14.2 + driver backports from stable/14) into the newly-created root, and bootstraps a newer version of `pkg'. It then starts installing our master PKG, which installs various other PKGs (some from the PKG mirrors, some built from ports, and some proprietary) as dependencies. It is during this stage -- installing dependencies -- that the wheels sometimes fall off the wagon. It will be humming along, and then just stops. The serial console becomes unresponsive, even to the serial debugger sequence ([return] [tilde] [ctrl-b]). The kernel still responds to pings, but because we don't have SSH up and running yet, we can't get much more than that. We determined that if we use IPMI to trigger an NMI -- from another machine, run `ipmitool -U ${BMC_USER} -P ${BMC_PASSWORD} -H ${BMC_ADDR} chassis power diag' -- then the hung node is able to enter `ddb'. At that point, the serial console becomes responsive again. Running `ps' from the debugger shows that `pkg' is waiting on the console: ``` 2267 2266 19 0 S+ ttyout 0xfffff8012e8c68c0 pkg 2266 2224 19 0 S+ wait 0xfffffe14dd714ac0 pkg 2224 1707 19 0 S+ wait 0xfffffe1176466ae0 sh ``` Runing `show msgbuf' shows that the last line in the buffer is for a PKG that gets installed later than the PKG which is mentioned in the last line of console output. That is congruent with the idea that output from `pkg' is getting stuck in the output queue and not being emitted to the console. At that point, it is possible to `continue' to exit `ddb', and the install resumes and runs to completion. This suggests a problem with the serial console drivers. The console config is as follows: 'loader.conf': ``` comconsole_port="0x2f8" comconsole_speed="115200" boot_serial="YES" console="efi" ``` 'device.hints': ``` hint.uart.0.at="acpi" hint.uart.0.port="0x3F8" hint.uart.0.flags="0x00" hint.uart.1.at="acpi" hint.uart.1.port="0x2F8" hint.uart.1.flags="0x90" hint.uart.1.baud="115200" ``` -- You are receiving this mail because: You are the assignee for the bug.home | help
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