This bug was fixed in the package linux-oem-6.11 - 6.11.0-1008.8
---------------
linux-oem-6.11 (6.11.0-1008.8) noble; urgency=medium
* noble/linux-oem-6.11: 6.11.0-1008.8 -proposed tracker (LP: #2088051)
* Packaging resync (LP: #1786013)
- [Packaging] debian.oem/dkms-versions -- manual update for Intel MIPI
Camera
* Stalls unless C-states disabled - Intel Lunarlake (LP: #2087815)
- SAUCE: x86/cpu: Add INTEL_FAM6_LUNARLAKE_M to X86_BUG_MONITOR
* [SRU] Fix error of resume on rtl8168fp (LP: #2087507)
- r8169: avoid unsolicited interrupts
* Unreadable thunderbolt nvm_version under sysfs (LP: #2085945)
- thunderbolt: Add only on-board retimers when
!CONFIG_USB4_DEBUGFS_MARGINING
* NVIDIA WANR_ON call trace right after power on or resumed on 6.11 kernel
(LP: #2086668)
- mm: introduce ARCH_SUPPORTS_HUGE_PFNMAP and special bits to pmd/pud
- mm: new follow_pfnmap API
- mm/x86/pat: use the new follow_pfnmap API
- mm/x86: support large pfn mappings
- mm: fix follow_pfnmap API lockdep assert
- [Config] enable ARCH_SUPPORTS_{HUGE,PMD,PUD}_PFNMAP
* Ubuntu 24.04 OS can't install on the nvme(on PCH) with raid on mode
(LP: #2085853)
- SAUCE: PCI: vmd: Clean up vmd_enable_domain function
- SAUCE: PCI: vmd: Add VMD PCH rootbus support
- SAUCE: PCI: vmd: Add WA for VMD PCH rootbus support
* Fix phantom monitor on some machines with kernel 6.11 (LP: #2085456)
- firmware/sysfb: Disable sysfb for firmware buffers with unknown parent
* Internal microphone recording voice with noise on Dell D14 AIO systems
(LP: #2085777)
- ALSA: hda/realtek: Limit internal Mic boost on Dell platform
-- Kuan-Ying Lee <[email protected]> Wed, 13 Nov 2024
17:27:37 +0800
** Changed in: linux-oem-6.11 (Ubuntu Noble)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2086668
Title:
NVIDIA WANR_ON call trace right after power on or resumed on 6.11
kernel
Status in HWE Next:
New
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux-oem-6.11 source package in Noble:
Fix Released
Bug description:
[Impact]
Shows follow_pte() warning with nvidia dirver + 6.11 kernel.
Aug 09 09:20:42 ubuntu-202407-34200 kernel: WARNING: CPU: 0 PID: 2918
at include/linux/rwsem.h:80 follow_pte+0x220/0x230
[Fix]
This occurs during suspend when a function from the NVIDIA
'nv_revoke_gpu_mappings_locked()' calls the kernel function
'unmap_mapping_range()', which eventually ends up calling 'follow_pte()'. The
function 'follow_pte()' calls an assertion 'mmap_assert_locked' to check if the
'mmap_lock' has been taken.
This assertion fails, and we see a warning call trace (no functional issue,
just some output in dmesg). All of this happens in kernel versions v6.10
through v6.11.
This is a kernel bug, not an NVIDIA driver bug, and has also been discussed
here in the kernel mailing list :
https://lore.kernel.org/linux-mm/[email protected]/T/#u
There is a series of patches to address this issue and replace the
follow_pte()
https://lore.kernel.org/linux-mm/[email protected]/
We try to cherry pick the new functions and at the same time preserve the
follow_pte() for compatiblity with the old drivers.
b1b46751671b mm: fix follow_pfnmap API lockdep assert
75182022a043 mm/x86: support large pfn mappings
cbea8536d933 mm/x86/pat: use the new follow_pfnmap API
6da8e9634bb7 mm: new follow_pfnmap API
6857be5fecae mm: introduce ARCH_SUPPORTS_HUGE_PFNMAP and special bits to
pmd/pud
[Test]
1. Boot up the machine with 6.11 kernel + nvidia driver
2. Do suspend/resume and check dmesg
3. There should be no nvidia call trace
[Where problems could occur]
Only this patch change the code that uses follow_pfnmap() to replace
follow_pfn()
cbea8536d933 ("mm/x86/pat: use the new follow_pfnmap API")
The changes are 1x1 mappingable and should do the identical things.
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