** Changed in: linux-oem-6.1 (Ubuntu Jammy)
Status: In Progress => Fix Committed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.0 in Ubuntu.
https://bugs.launchpad.net/bugs/2011389
Title:
vmd may fail to create sysfs entry while `pci_rescan_bus()` called in
some other drivers like wwan
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.0 package in Ubuntu:
Invalid
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Invalid
Status in linux-oem-6.0 source package in Jammy:
Won't Fix
Status in linux-oem-6.1 source package in Jammy:
Fix Committed
Status in linux source package in Lunar:
In Progress
Status in linux-oem-6.0 source package in Lunar:
Invalid
Status in linux-oem-6.1 source package in Lunar:
Invalid
Bug description:
[SRU Justification]
[Impact]
With wwan t7xx driver patched, vmd may fail the probe process because
it does not lock properly.
[Fix]
https://lore.kernel.org/linux-
pci/20230313173733.1815277-1-vicamo.y...@canonical.com/T/#u
[Test Case]
Verify on platforms with FM350 wwan module with prebuilt oem-6.1 or
above kernels. No vmd probe error should be found in dmesg.
[Where problems could occur]
This is the way it should have been done.
[Other Info]
This is not reproducible with v6.0 or older kernels, so only Lunar and
oem-6.1 are nominated for fix. OEM-6.0 patch goes to Gerrit instead.
========== original bug report ==========
vmd may fail to create sysfs entry while `pci_rescan_bus()` called in
some other drivers like wwan.
This happens after bug 2002089 re-added pci rescan feature back to
wwan t7xx driver to support firmware updates via devlink. t7xx may
call `pci_rescan_bus()` with proper locks, but vmd doesn't.
sysfs: cannot create duplicate filename '/devices/.../resource0'
Call Trace:
<TASK>
sysfs_warn_dup.cold+0x17/0x34
sysfs_add_bin_file_mode_ns+0xc0/0xf0
sysfs_create_bin_file+0x6d/0xb0
pci_create_attr+0x117/0x260
pci_create_resource_files+0x6b/0x150
pci_create_sysfs_dev_files+0x18/0x30
pci_bus_add_device+0x30/0x80
pci_bus_add_devices+0x31/0x80
pci_bus_add_devices+0x5b/0x80
vmd_enable_domain.constprop.0+0x6b7/0x880 [vmd]
vmd_probe+0x16d/0x193 [vmd]
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2011389/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
