Public bug reported:
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]
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
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]
+ <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]
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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 linux package in Ubuntu:
New
Bug description:
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]
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