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
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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
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