Hi Larry, > I have been getting a number of page allocation failures of late on my x86_64 > system. The user-space app that hits the problem varies; however, there is > always a network connection. In addition, the failure is always of order 1. For > the instance reported below, git was updating a tree mounted on an NFS volume. > The problem started with 2.6.30-rc1, but persists with -rc3. > > I have seen the problem with the b43 and p54usb wireless drivers. The user-space > apps include cc1, git components, and firefox; thus not all involve nfs. > > I will be happy to supply any further information. > > kernel: git: page allocation failure. order:1, mode:0x4020 > kernel: [<ffffffffa0220711>] ieee80211_skb_resize+0x91/0xc7 [mac80211] ... > kernel: 427298 pages non-shared It's a little curious that you have order:1 allocations here. I think below the printout you showed you would see a line like phy0: failed to reallocate TX buffer Is that there? Could you track down that message in the code (around net/mac80211/tx.c line 1368) and add to it the following: "%d, %d, need %d, %d", skb->data_len, skb->len, head_need, tail_need and then try to reproduce this problem please? With both p54 and b43 you should only have packets far smaller than 4096 bytes so no order 1 allocation should be needed, afaict. johannes
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