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The latest patch for glibc-2.40-12 includes a vDSO version of getrandom(). The new getrandom code in glibc calls the function internal_signal_block_all(), which uses the syscall rt_sigprocmask. dhcpcd uses seccomp, and doesn't (yet) allow this syscall - I've submitted an upstream issue: https://github.com/NetworkConfiguration/dhcpcd/issues/421 The patch for that issue should be applied for Fedora 41 so that dhcpcd doesn't crash with the updated glibc. Reproducible: Always Steps to Reproduce: 1. Configure dhcpcd for ipv6, which uses getrandom() 2. Start dhcpcd Actual Results: dhcpcd crashes with SIGSYS Expected Results: dhcpcd correctly configures the ipv6 addresses
Fix can be found here: https://src.fedoraproject.org/rpms/dhcpcd/pull-request/7 https://src.fedoraproject.org/rpms/dhcpcd/pull-request/8
This also seems to affect Fedora 40.
FEDORA-2025-0b4e2489b0 (dhcpcd-10.1.0-1.fc41) has been submitted as an update to Fedora 41. https://bodhi.fedoraproject.org/updates/FEDORA-2025-0b4e2489b0
FEDORA-2025-4553d23d99 (dhcpcd-10.1.0-1.fc40) has been submitted as an update to Fedora 40. https://bodhi.fedoraproject.org/updates/FEDORA-2025-4553d23d99
FEDORA-2025-0b4e2489b0 has been pushed to the Fedora 41 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2025-0b4e2489b0` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2025-0b4e2489b0 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2025-4553d23d99 has been pushed to the Fedora 40 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2025-4553d23d99` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2025-4553d23d99 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2025-0b4e2489b0 (dhcpcd-10.1.0-1.fc41) has been pushed to the Fedora 41 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2025-4553d23d99 (dhcpcd-10.1.0-1.fc40) has been pushed to the Fedora 40 stable repository. If problem still persists, please make note of it in this bug report.