Azure diagnostic/serviceability improvement
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-azure (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Invalid
|
Undecided
|
Unassigned | ||
linux-azure-4.15 (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Microsoft would like to request the inclusion of commits in all releases supported on Azure. These commits will enable reporting 4 Kbytes of dmesg information to Hyper-V when Linux takes a panic.
Microsoft would like to get all releases reporting this information, so that we can automatically get a rich picture of Linux panics in Azure. This will limit the need get serial console logs or other steps to manually acquire debug info.
We would like to request the folloiwng commits to enable the diagnostic/
f3a99e761efa ("x86/Hyper-V: Report crash data in die() when panic_on_oops is set")
040026df7088 ("x86/Hyper-V: Report crash register data when sysctl_
a11589563e96 ("x86/Hyper-V: Report crash register data or kmsg before running crash kernel")
73f26e526f19 ("x86/Hyper-V: Trigger crash enlightenment only once during system crash.")
7f11a2cc10a4 ("x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump")
74347a99e73a ("x86/Hyper-V: Unload vmbus channel in hv panic callback")
8afc06dd75c0 ("Drivers: hv: vmbus: Fix the issue with freeing up hv_ctl_table_hdr")
ddcaf3ca4c3c ("Drivers: hv: vmus: Fix the check for return value from kmsg get dump buffer")
81b18bce48af ("Drivers: HV: Send one page worth of kmsg dump over Hyper-V during panic")
7ed4325a44ea ("Drivers: hv: vmbus: Make panic reporting to be more useful")
CVE References
Changed in linux-azure-4.15 (Ubuntu Bionic): | |
status: | New → In Progress |
Changed in linux-azure-4.15 (Ubuntu Bionic): | |
status: | In Progress → Fix Committed |
The changes are only necessary for 4.15. 5.4 and 5.3 already have all the chances via mainline or upstream stable updates.