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Opened 6 years ago

Closed 6 years ago

Last modified 4 years ago

#10375 closed defect (worksforme)

skbuff alloc of size 1926 failed

Reported by: andrzejmleczko@… Owned by: developers
Priority: normal Milestone: Barrier Breaker 14.07
Component: base system Version: Trunk
Keywords: Cc:

Description

After 4 days of uptime i got this kind of errors in dmesg:

size 1926 failed
skbuff alloc of size 1926 failed
skbuff alloc of size 1926 failed
alloc_pages_slowpath: 452 callbacks suppressed
swapper: page allocation failure. order:0, mode:0x4020
Call Trace:[<802537f4>] 0x802537f4
[<802537f4>] 0x802537f4
[<800adf34>] 0x800adf34
[<800d0018>] 0x800d0018
[<80076374>] 0x80076374
[<800d0b64>] 0x800d0b64
[<800d1944>] 0x800d1944
[<834a4080>] 0x834a4080
[<801cb76c>] 0x801cb76c
....

Logs are attached to ticket

using:
ATTITUDE ADJUSTMENT (bleeding edge, r28458) ----------
DIR-825B2

Attachments (3)

dmesg (14.8 KB) - added by Andrzej Mleczko <andrzejmleczko@…> 6 years ago.
lsmod (2.9 KB) - added by Andrzej Mleczko <andrzejmleczko@…> 6 years ago.
ps (2.2 KB) - added by Andrzej Mleczko <andrzejmleczko@…> 6 years ago.

Download all attachments as: .zip

Change History (9)

Changed 6 years ago by Andrzej Mleczko <andrzejmleczko@…>

Changed 6 years ago by Andrzej Mleczko <andrzejmleczko@…>

Changed 6 years ago by Andrzej Mleczko <andrzejmleczko@…>

comment:1 Changed 6 years ago by Andrzej Mleczko <andrzejmleczko@…>

I forgot to mention that system is running on full ext-root

comment:2 Changed 6 years ago by jow

You are out of RAM. Limit the maximum allowed number of conntrack entries to 4096 and reduce the tcp idle timeout to 300 in sysctl.conf. No, swap does not help here.

comment:3 Changed 6 years ago by Andrzej Mleczko <andrzejmleczko@…>

I'll try this. Thx :)

comment:4 Changed 6 years ago by nbd

  • Resolution set to worksforme
  • Status changed from new to closed

comment:5 Changed 6 years ago by anonymous123

Just had the same issue on a TP-Link WR741ND on OpenWRT Backfire [r28263]. I did some iperf tests yesterday between one WR741ND, a WR1043ND, a Dlink DIR300, a Nokia N900 and a laptop (AR928X Wireless Network Adapter (PCI-Express) (rev 01)). This morning the laptop was still connected to the WR741ND, I could also ping its master interface just fine (usually < 5ms latency), the one I was connected to.

dmesg:

skbuff alloc of size 1926 failed
[...]
skbuff alloc of size 1926 failed
skbuff alloc of size 1926 failed
skbuff alloc of size 1926 failed
skbuff alloc of size 1926 failed
eth1: out of memory
skbuff alloc of size 1926 failed
ieee80211 phy0: failed to reallocate TX buffer
ieee80211 phy0: failed to copy skb for wlan1

There still seems to be enough RAM left (at least this morning) on the according WR741ND:

# free
              total         used         free       shared      buffers
  Mem:        29372        15884        13488            0         1132
 Swap:            0            0            0
Total:        29372        15884        13488

comment:6 Changed 4 years ago by jow

  • Milestone changed from Attitude Adjustment 12.09 to Barrier Breaker 14.07

Milestone Attitude Adjustment 12.09 deleted

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