Hi,same problem here. i left my laptop on for a longer time and ifconfig failed too
ifconfig eth0 192.168.1.2 up returns the following error message:
laptop ~ # ifconfig eth0 192.168.1.2 up
SIOCSIFFLAGS: Cannot allocate memory
SIOCSIFFLAGS: Cannot allocate memory
output of dmesg:
ifconfig: page allocation failure. order:8, mode:0x21
[<c01382f2>] __alloc_pages+0x1d2/0x3a0
[<c01384df>] __get_free_pages+0x1f/0x40
[<c010923a>] dma_alloc_coherent+0xca/0x100
[<e00dec87>] b44_alloc_consistent+0xc7/0x1a0 [b44]
[<e00df1a1>] b44_open+0x21/0xd0 [b44]
[<c035e3ae>] schedule+0x2be/0x4e0
[<c02e0445>] dev_open+0x85/0xa0
[<c02e1953>] dev_change_flags+0x53/0x130
[<c031ec17>] devinet_ioctl+0x257/0x5b0
[<c0320f36>] inet_ioctl+0x66/0xb0
[<c02d76c9>] sock_ioctl+0xd9/0x2b0
[<c0162215>] sys_ioctl+0xd5/0x220
[<c0107417>] do_syscall_trace+0x47/0x90
[<c0102f43>] syscall_call+0x7/0xb
there's plenty of free memory available:
laptop ~ # free
total used free shared buffers cached
Mem: 506320 499728 6592 0 20036 274712
-/+ buffers/cache: 204980 301340
Swap: 987988 3144 984844
unloading and reloading the module didn't help, only a reboot fixed it (after ~36hours uptime)