ISS-3449: Bazel target for linux-headers#1
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nate-nexthop
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#### Why I did it If one python wheel is already installed inside slave container, it will not install again. Below is a sample log: ``` sed: -e expression #1, char 11: extra characters after command WARNING: The directory '/var/user/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you should use sudo's -H flag. Processing ./target/python-wheels/bookworm/sonic_yang_models-1.0-py3-none-any.whl sonic-yang-models is already installed with the same version as the provided wheel. Use --force-reinstall to force an installation of the wheel. WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager, possibly rendering your system unusable.It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv. Use the --root-user-action option if you know what you are doing and want to suppress this warning. [notice] A new release of pip is available: 24.2 -> 25.3 [notice] To update, run: python3 -m pip install --upgrade pip Build end time: Wed Dec 3 22:53:07 UTC 2025 Elapsed time: 0h 0m 1s ``` However, we expect to reinstall the python wheel for target `$(PYTHON_WHEELS_PATH)/%-install` ##### Work item tracking - Microsoft ADO **(number only)**: #### How I did it Update slave.mk to enasure force install the python wheel. #### How to verify it After this change, local build will successfully force install the python wheel. See new logs: ``` sed: -e expression #1, char 11: extra characters after command WARNING: The directory '/var/qiluo/.cache/pip' or its parent directory is not owned or is not writable by the current user. The cache has been disabled. Check the permissions and owner of that directory. If executing pip with sudo, you should use sudo's -H flag. Processing ./target/python-wheels/bookworm/sonic_yang_models-1.0-py3-none-any.whl Installing collected packages: sonic-yang-models Attempting uninstall: sonic-yang-models Found existing installation: sonic-yang-models 1.0 Uninstalling sonic-yang-models-1.0: Successfully uninstalled sonic-yang-models-1.0 Successfully installed sonic-yang-models-1.0 WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager, possibly rendering your system unusable.It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv. Use the --root-user-action option if you know what you are doing and want to suppress this warning. [notice] A new release of pip is available: 24.2 -> 25.3 [notice] To update, run: python3 -m pip install --upgrade pip Build end time: Wed Dec 3 23:59:31 UTC 2025 ```
venu-nexthop
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Dec 17, 2025
…logs The `imklog` plugin of rsyslog collects the kernel logs from `/dev/kmsg` and enqueues it to the syslog. With `CONFIG_PRINTK_TIME` the kernel messages are by default prefixed with the elapsed time since boot. The `imklog` plugin parsing these messages have a few options such as to keep the timestamps as such or to interpret and adjust the syslog's reported time accordingly. The rsylog release `8.2312.0` has fixes in interpreting these timestamps, leading to the change in behavior observed in sonic-net#24386. https://salsa.debian.org/debian/rsyslog/-/blob/debian/8.2504.0-1/ChangeLog?ref_type=tags#L619 To restore the earlier behavior or retaining the kernel reported elapsed time, disable `KlogParseKernelTimestamp` as this leads to removal of timestamp from kernel messages and enable `KlogKeepKernelTimestamp` explicitly. The later is required as the default is now to discard the kernel timestamp. With this change, the logs retain the kernel timestamp: root@sonic:~# cat /var/log/syslog | grep "sonic.*kernel:" | head -n 3 2025 Nov 4 05:15:14.918946 sonic NOTICE kernel: [ 0.000000] Linux version 6.12.41+deb13-sonic-amd64 (debian-kernel@lists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT_DYNAMIC Debian 6.12.41-1 (2025-08-12) 2025 Nov 4 05:15:14.919533 sonic INFO kernel: [ 0.000000] Command line: BOOT_IMAGE=/image-trixie.0-dirty-20251102.122837/boot/vmlinuz-6.12.41+deb13-sonic-amd64 root=UUID=ac0b6826-f8a3-461f-a8ff-701df60d90b6 rw console=tty0 console=ttyS0,115200n8 quiet processor.max_cstate=1 intel_idle.max_cstate=0 net.ifnames=0 biosdevname=0 loop=image-trixie.0-dirty-20251102.122837/fs.squashfs loopfstype=squashfs apparmor=1 security=apparmor varlog_size=4096 usbcore.autosuspend=-1 intel_iommu=off modprobe.blacklist=gpio_ich,i2c-ismt,i2c_ismt,i2c-i801,i2c_i801 crashkernel=0M-2G:256M,2G-4G:320M,4G-8G:384M,8G-:448M acpi_no_watchdog 2025 Nov 4 05:15:14.919536 sonic INFO kernel: [ 0.000000] BIOS-provided physical RAM map: root@sonic:~# cat /var/log/syslog | grep "sonic.*kernel:" | tail -n 3 2025 Nov 4 05:17:26.831607 sonic WARNING kernel: [ 143.527486] PDDF_LED set_status_led: Set [FANTRAY_LED;1] color[green] 2025 Nov 4 05:17:26.912442 sonic WARNING kernel: [ 143.607086] PDDF_LED set_status_led: Set [FANTRAY_LED;2] color[green] 2025 Nov 4 05:20:32.499634 sonic WARNING kernel: [ 329.195319] PDDF_LED set_status_led: Set [SYS_LED;0] color[amber] root@sonic:~# Signed-off-by: Ramasamy Chandramouli <rachandr@celestica.com> Co-authored-by: Ramasamy Chandramouli <rachandr@celestica.com>
eswaran-nexthop
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Jan 21, 2026
…logs The `imklog` plugin of rsyslog collects the kernel logs from `/dev/kmsg` and enqueues it to the syslog. With `CONFIG_PRINTK_TIME` the kernel messages are by default prefixed with the elapsed time since boot. The `imklog` plugin parsing these messages have a few options such as to keep the timestamps as such or to interpret and adjust the syslog's reported time accordingly. The rsylog release `8.2312.0` has fixes in interpreting these timestamps, leading to the change in behavior observed in sonic-net#24386. https://salsa.debian.org/debian/rsyslog/-/blob/debian/8.2504.0-1/ChangeLog?ref_type=tags#L619 To restore the earlier behavior or retaining the kernel reported elapsed time, disable `KlogParseKernelTimestamp` as this leads to removal of timestamp from kernel messages and enable `KlogKeepKernelTimestamp` explicitly. The later is required as the default is now to discard the kernel timestamp. With this change, the logs retain the kernel timestamp: root@sonic:~# cat /var/log/syslog | grep "sonic.*kernel:" | head -n 3 2025 Nov 4 05:15:14.918946 sonic NOTICE kernel: [ 0.000000] Linux version 6.12.41+deb13-sonic-amd64 (debian-kernel@lists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT_DYNAMIC Debian 6.12.41-1 (2025-08-12) 2025 Nov 4 05:15:14.919533 sonic INFO kernel: [ 0.000000] Command line: BOOT_IMAGE=/image-trixie.0-dirty-20251102.122837/boot/vmlinuz-6.12.41+deb13-sonic-amd64 root=UUID=ac0b6826-f8a3-461f-a8ff-701df60d90b6 rw console=tty0 console=ttyS0,115200n8 quiet processor.max_cstate=1 intel_idle.max_cstate=0 net.ifnames=0 biosdevname=0 loop=image-trixie.0-dirty-20251102.122837/fs.squashfs loopfstype=squashfs apparmor=1 security=apparmor varlog_size=4096 usbcore.autosuspend=-1 intel_iommu=off modprobe.blacklist=gpio_ich,i2c-ismt,i2c_ismt,i2c-i801,i2c_i801 crashkernel=0M-2G:256M,2G-4G:320M,4G-8G:384M,8G-:448M acpi_no_watchdog 2025 Nov 4 05:15:14.919536 sonic INFO kernel: [ 0.000000] BIOS-provided physical RAM map: root@sonic:~# cat /var/log/syslog | grep "sonic.*kernel:" | tail -n 3 2025 Nov 4 05:17:26.831607 sonic WARNING kernel: [ 143.527486] PDDF_LED set_status_led: Set [FANTRAY_LED;1] color[green] 2025 Nov 4 05:17:26.912442 sonic WARNING kernel: [ 143.607086] PDDF_LED set_status_led: Set [FANTRAY_LED;2] color[green] 2025 Nov 4 05:20:32.499634 sonic WARNING kernel: [ 329.195319] PDDF_LED set_status_led: Set [SYS_LED;0] color[amber] root@sonic:~# Signed-off-by: Ramasamy Chandramouli <rachandr@celestica.com> Co-authored-by: Ramasamy Chandramouli <rachandr@celestica.com>
domingo-nexthop
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Mar 5, 2026
…net#25643) * [build] Add build timing report and dependency analysis tools Add three scripts for build performance instrumentation: - scripts/build-timing-report.sh: Parse per-package timing from build logs (HEADER/FOOTER timestamps), generate sorted duration table, phase breakdown, parallelism timeline, and CSV export. - scripts/build-dep-graph.py: Parse rules/*.mk dependency graph, compute critical path, fan-out/fan-in bottleneck analysis, and generate DOT/JSON output for visualization. - scripts/build-resource-monitor.sh: Sample CPU, memory, disk I/O, and Docker container count during builds for resource utilization analysis. Add "make build-report" target to slave.mk that runs the timing report and dependency analysis after a build completes. Example output from a VS build on 24-core/30GB machine: - 210 packages built in 53m wall time (173m CPU) - Max concurrency: 5 (with SONIC_CONFIG_BUILD_JOBS=4) - Critical path: 14 packages deep (libnl -> libswsscommon -> utilities) - Top bottleneck: LIBSWSSCOMMON with 48 downstream dependents Signed-off-by: Rustiqly <rustiqly@users.noreply.github.com> * Address Copilot review: fix 17 bugs in build analysis scripts - Use free -m with division instead of free -g to avoid rounding (#1) - Add = and ?= to Makefile dependency regex patterns (#2, sonic-net#7) - CPU calculation now uses /proc/stat delta (two reads) (#3, sonic-net#14) - Fix misleading 'critical path estimate' comment (sonic-net#4) - Fix parallelism timeline comment (60s not 10s) (sonic-net#5) - Include after-relationship packages in fan stats (sonic-net#6) - Guard disk I/O division by zero when INTERVAL<=1 (sonic-net#8) - Remove unused elapsed_line variable (sonic-net#9) - Remove redundant LIBSWSSCOMMON_DBG check (sonic-net#10) - Remove active_make_jobs from CSV header comment (sonic-net#11) - Wire up _RDEPENDS parsing to build reverse deps (sonic-net#12) - Remove unnecessary 'if v' filter on rdeps JSON (sonic-net#13) - Remove unused REPORT_FORMAT parameter (sonic-net#15) - Add cycle detection to critical path algorithm (sonic-net#16) - Add execute permission check for companion scripts (sonic-net#17) Signed-off-by: Rustiqly <rustiqly@users.noreply.github.com> --------- Signed-off-by: Rustiqly <rustiqly@users.noreply.github.com> Co-authored-by: Rustiqly <rustiqly@users.noreply.github.com>
saravanan-nexthop
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Mar 25, 2026
…dating udevd rules (sonic-net#26343) - Why I did it On SONiC SmartSwitch platforms with DPUs, systemd-udevd crashes with SIGABRT on every reboot when DPU firmware initialization is slow. During the initramfs boot phase, a standalone systemd-udevd daemon is started to handle device discovery. If DPU firmware takes longer than the 60-second udevadm settle timeout (BlueField-3 DPUs can take 120 seconds each in the failure case when they are stuck), the initramfs cannot stop this udevd before switch_root. The stale process survives into the real system but is never chrooted into the overlayfs root, leaving it with a broken filesystem view. When dpu-udev-manager.sh writes udev rules, the stale udevd detects the change and crashes on an assertion in systemd's chase() path resolution (assert(path_is_absolute(p)) at chase.c:648), because dir_fd_is_root() returns false for a process whose root still points to the initramfs rootfs rather than the overlayfs. This triggers a systemd issue : systemd/systemd#29559 which maintainers doesn't consider as a bug from systemd side. Raising this fix for our usecase. Core was generated by `/usr/lib/systemd/systemd-udevd --daemon --resolve-names=never'. Program terminated with signal SIGABRT, Aborted. #0 0x00007f29fe7f695c in ?? () from /lib/x86_64-linux-gnu/libc.so.6 (gdb) bt #0 0x00007f29fe7f695c in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x00007f29fe7a1cc2 in raise () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x00007f29fe78a4ac in abort () from /lib/x86_64-linux-gnu/libc.so.6 #3 0x00007f29fea50c11 in ?? () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#4 0x00007f29feb94a8b in chase () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#5 0x00007f29feb956e2 in chase_and_opendir () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#6 0x00007f29feb9a609 in conf_files_list_strv () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#7 0x00007f29fea913e8 in config_get_stats_by_path () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#8 0x0000559f295519cf in ?? () sonic-net#9 0x0000559f29553a77 in ?? () sonic-net#10 0x00007f29fec36055 in ?? () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#11 0x00007f29fec3668d in sd_event_dispatch () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#12 0x00007f29fec394a8 in sd_event_run () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#13 0x00007f29fec396c7 in sd_event_loop () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so sonic-net#14 0x0000559f29545820 in ?? () sonic-net#15 0x00007f29fe78bca8 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 sonic-net#16 0x00007f29fe78bd65 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 sonic-net#17 0x0000559f29545c51 in ?? () - How I did it Added a kill_stale_udevd() function to dpu-udev-manager.sh that runs before writing the udev rules. It identifies the systemd-managed udevd PID via systemctl show, then kills any other systemd-udevd --daemon process that doesn't match -- these are leftover initramfs instances. If no stale process exists (e.g. DPUs are healthy and the initramfs udevd exited cleanly), the function is a no-op. - How to verify it Deploy the image on a SmartSwitch with DPUs in a state where firmware initialization times out (>60s per DPU) by stopping image installation before firmware install step Reboot the switch Verify no new systemd-udevd coredumps in /var/core/ Verify the stale process was killed: journalctl -b 0 | grep dpu-udev-manager should show killing stale initramfs udevd PID (systemd udevd is PID ) Verify systemd-udevd.service is healthy: systemctl status systemd-udevd should show active (running) Verify DPU udev rules were written: cat /etc/udev/rules.d/92-midplane-intf.rules should contain the DPU interface naming rules Signed-off-by: Hemanth Kumar Tirupati <tirupatihemanthkumar@gmail.com>
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Why I did it
to build linux headers via bazel
How I did it
a la bazel
How to verify it
uncomment TODO in nhbroadcomsai/BUILD.bazel that points to
sonic_linux_headers, verify SAI builds successfullyWhich release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)