On Wed, Feb 21, 2024 at 08:34:23AM -0800, Jeff Johnson wrote: > On 2/21/2024 6:39 AM, Vlastimil Babka wrote: > > Hi, > > > > starting with 6.8 rc series, I'm experiencing problems on resume from s2idle > > on my laptop, which is Lenovo T14s Gen3: > > > > LENOVO 21CRS0K63K/21CRS0K63K, BIOS R22ET65W (1.35 ) > > ath11k_pci 0000:01:00.0: wcn6855 hw2.1 > > ath11k_pci 0000:01:00.0: chip_id 0x12 chip_family 0xb board_id 0xff soc_id 0x400c1211 > > ath11k_pci 0000:01:00.0: fw_version 0x1106196e fw_build_timestamp 2024-01-12 11:30 fw_build_id WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.37 > > > > The problem is an allocation failure happening on resume from s2idle. After > > that the wifi stops working and even a reboot won't fix it, only a > > poweroff/poweron cycle of the laptop. > > Looks like WLAN is powered down during s2idle, which doesn't make sense. I hope Jeff will figure out what's going on. But if you can share the dmesg after enabling the debug prints of both ath11k and MHI, it will help a lot. - Mani > > This is order 4 (costly order), GFP_NOIO (maybe it's originally GFP_KERNEL > > but we restrict to GFP_NOIO during resume) allocation, thus it's impossible > > to do memory compaction and the page allocator gives up. Such high-order > > allocations should have a fallback using smaller pages, or maybe it could at > > least retry once the restricted GFP_NOIO context is gone. > > > > I don't know why it never happened before 6.8, didn't spot anything obvious > > and it happens too unreliably to go bisect. Any idea? > > I've asked the development team to look at this, but in the interim can > you apply the two hibernation patchsets to see if those cleanups also > fix your problem: > > [PATCH 0/5] wifi: ath11k: prepare for hibernation support > https://lore.kernel.org/linux-wireless/20240221024725.10057-1-quic_bqiang@xxxxxxxxxxx > > [PATCH 0/3] wifi: ath11k: hibernation support > https://lore.kernel.org/linux-wireless/20240221030026.10553-1-quic_bqiang@xxxxxxxxxxx -- மணிவண்ணன் சதாசிவம்
