Fails to boot under Xen PV: BUG: unable to handle kernel paging request at edc21fd9
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
High
|
Joseph Salisbury | ||
Bionic |
Fix Released
|
High
|
Joseph Salisbury |
Bug Description
== SRU Justification ==
After an upgrade to Bionic, the bug reporter states the 32-bit kernel
does not boot under Xen PV mode. This bug does not affect 64-bit
kernels and if fixed by mainline commit 6a92b11169a6.
== Fix ==
6a92b11169a6 ("x86/EISA: Don't probe EISA bus for Xen PV guests")
== Regression Potential ==
Low. This commit only affects x86 kernels. This commit has also been cc'd to upstream stable, so it has had
additional upstream review.
== Test Case ==
A test kernel was built with this patch and tested by the original bug reporter.
The bug reporter states the test kernel resolved the bug.
After the most recent 18.04 32-bit upgrade of linux-image-
.
.
.
[ 0.114370] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.114382] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.114423] pinctrl core: initialized pinctrl subsystem
[ 0.134326] RTC time: 165:165:165, date: 165/165/65
[ 0.134442] NET: Registered protocol family 16
[ 0.134457] xen:grant_table: Grant tables using version 1 layout
[ 0.134502] Grant table initialized
[ 0.134544] audit: initializing netlink subsys (disabled)
[ 0.134611] audit: type=2000 audit(153530779
[ 0.134678] EISA bus registered
[ 0.136019] PCI: setting up Xen PCI frontend stub
[ 0.136073] BUG: unable to handle kernel paging request at edc21fd9
[ 0.136084] IP: eisa_bus_
[ 0.136089] *pdpt = 0000000001ee6027 *pde = 0000000029cc6067 *pte = 0000000000000000
[ 0.136100] Oops: 0000 [#1] SMP
[ 0.136105] Modules linked in:
[ 0.136111] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.15.0-33-generic #36-Ubuntu
[ 0.136120] EIP: eisa_bus_
[ 0.136125] EFLAGS: 00010246 CPU: 0
[ 0.136130] EAX: edc21fd9 EBX: 00000000 ECX: 01e0d000 EDX: 00000200
[ 0.136138] ESI: c1d0d452 EDI: c1dd34a4 EBP: e9c89f24 ESP: e9c89f24
[ 0.136145] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: e021
[ 0.136154] CR0: 80050033 CR2: edc21fd9 CR3: 01e10000 CR4: 00042660
[ 0.136166] Call Trace:
[ 0.136173] do_one_
[ 0.136179] ? parse_args+
[ 0.136187] ? set_debug_
[ 0.136193] kernel_
[ 0.136201] ? rest_init+0xa0/0xa0
[ 0.136207] kernel_
[ 0.136213] ret_from_
[ 0.140000] Code: ff b8 df 43 ae c1 e8 35 1b 88 ff e8 20 12 88 ff c9 c3 3e 8d 74 26 00 55 b9 04 00 00 00 31 d2 b8 d9 ff 0f 00 89 e5 e8 35 8d 35 ff <8b> 10 81 fa 45 49 53 41 75 0a c7 05 a0 76 ed c1 01 00 00 00 e8
[ 0.140000] EIP: eisa_bus_
[ 0.140000] CR2: 00000000edc21fd9
[ 0.140000] ---[ end trace 8c00b3cb7d4f06ba ]---
[ 0.140013] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
This is: [ 0.000000] Linux version 4.15.0-33-generic (buildd@
Switching to a 64-bit kernel allows boot to proceed.
I cannot include output of the commands you request (uname, version_signature, dmesg, lspci) because the guest doesn't boot. The above kernel output is from a just-installed clean guest however.
affects: | linux-meta (Ubuntu) → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Released |
tags: | added: cscc |
Additionally, this means that the netboot installer at e.g. http:// gb.archive. ubuntu. com/ubuntu/ dists/bionic/ main/installer- i386/current/ images/ netboot/ xen/vmlinuz also does not boot under Xen PV. Again, the 64-bit equivalent does still work.