This bug was fixed in the package systemd - 229-4ubuntu21.4 --------------- systemd (229-4ubuntu21.4) xenial; urgency=medium
* debian/extra/start-udev: test that sync parameters file is writable, before writing to it. On old kernels (e.g. v4.4) the file is available but is read-only, thus writing to it causes init to fail and thus raise a kernel panic. As an extra caution ignore failures to write into that file anyway, since synchronous scsi probing is not critical enough to prevent starting d-i. LP: #1784454 -- Dimitri John Ledkov <x...@ubuntu.com> Mon, 30 Jul 2018 19:58:15 +0100 ** Changed in: systemd (Ubuntu Xenial) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1784454 Title: kernel panic on booting kernel 4.4 based d-i from 16.04.5 RC image Status in debian-installer package in Ubuntu: New Status in linux package in Ubuntu: Invalid Status in systemd package in Ubuntu: New Status in systemd source package in Xenial: Fix Released Bug description: Booting d-i based on kernel 4.4 (from ./boot folder) from the 16.04.5 RC image on a z/VM guest leads to a kernel panic: /lib/debian-installer/start-udev: line 15: can't create /sys/module/scsi_mod/par ameters/scan: Permission denied ¬ 0.845071| Kernel panic - not syncing: Attempted to kill initÜ exitcode=0x00 000100 ¬ 0.845071| ¬ 0.845075| CPU: 0 PID: 1 Comm: /init Not tainted 4.4.0-131-generic #157-Ubun tu ¬ 0.845077| 000000007d107c20 000000007d107cb0 0000000000000002 0000000 000000000 000000007d107d50 000000007d107cc8 000000007d107cc8 0000000000114732 000000000000008b 00000000009a304c 00000000009f11d0 000000000000000b 000000007d107d10 000000007d107cb0 0000000000000000 0000000000000000 0400000001cdf800 0000000000114732 000000007d107cb0 000000007d107d10 ¬ 0.845089| Call Trace: ¬ 0.845093| (¬<000000000011461a>| show_trace+0xfa/0x150) ¬ 0.845095| ¬<00000000001146e2>| show_stack+0x72/0xf8 ¬ 0.845099| ¬<0000000000555752>| dump_stack+0x82/0xb8 ¬ 0.845101| ¬<0000000000286390>| panic+0x108/0x250 ¬ 0.845104| ¬<0000000000166228>| do_exit+0xac0/0xba0 ¬ 0.845106| ¬<00000000001663c8>| do_group_exit+0x50/0xe0 ¬ 0.845108| ¬<0000000000166488>| __wake_up_parent+0x0/0x28 ¬ 0.845111| ¬<00000000007eadda>| system_call+0xee/0x28c ¬ 0.845113| ¬<000003ff8953983a>| 0x3ff8953983a 00: HCPGIR450W CP entered; disabled wait PSW 00020001 80000000 00000000 0010F8CA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/1784454/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp