New oleg firmware version

[staticroute]

I do observe something similar after some time running the router:

$ dmesg
art_kernel+0x2c/0x4c4
[<80001524>] ret_from_irq+0x0/0x4
[<80006470>] schedule+0x41c/0xb9c
[<80006518>] schedule+0x4c4/0xb9c
[<800081cc>] schedule_hrtimeout_range+0xec/0x17c
[<c029a228>] wlc_phytxctl1_calc+0x2198/0x303c [wl]
[<c029d104>] wlc_prep_sdu+0x810/0x1590 [wl]
[<c032e0b4>] wlc_phy_chanspec_get+0x0/0x8 [wl]
[<80004de0>] memcpy+0x0/0x4
[<c029aa68>] wlc_phytxctl1_calc+0x29d8/0x303c [wl]
[<c029d104>] wlc_prep_sdu+0x810/0x1590 [wl]
[<c02a6d20>] wlc_dpc+0x710/0xa70 [wl]
[<80327a00>] start_kernel+0x2c/0x4c4
[<c029e058>] wlc_send_q+0x1d4/0x7f4 [wl]
[<c02a6d20>] wlc_dpc+0x710/0xa70 [wl]
[<80327a00>] start_kernel+0x2c/0x4c4
[<80327e00>] start_kernel+0x42c/0x4c4
[<800032f0>] stack_done+0x20/0x40

WARNING: at mm/slub.c:2432 kfree()
Call Trace:
[<c029c0c0>] wlc_dotxstatus+0xbe8/0x11fc [wl]
[<c02a7280>] wlc_scbfind+0x0/0xd4 [wl]
[<c02a6d94>] wlc_dpc+0x784/0xa70 [wl]
[<80327e00>] start_kernel+0x42c/0x4c4
[<c0296e38>] wl_intrson+0x228/0x3bc [wl]
[<80327e00>] start_kernel+0x42c/0x4c4
[<80327a00>] start_kernel+0x2c/0x4c4
[<80001524>] ret_from_irq+0x0/0x4
[<80006470>] schedule+0x41c/0xb9c
[<80006518>] schedule+0x4c4/0xb9c
[<800081cc>] schedule_hrtimeout_range+0xec/0x17c
[<c029a228>] wlc_phytxctl1_calc+0x2198/0x303c [wl]
[<c029d104>] wlc_prep_sdu+0x810/0x1590 [wl]
[<c032e0b4>] wlc_phy_chanspec_get+0x0/0x8 [wl]
[<80004de0>] memcpy+0x0/0x4
[<c029aa68>] wlc_phytxctl1_calc+0x29d8/0x303c [wl]
[<c029d104>] wlc_prep_sdu+0x810/0x1590 [wl]
[<c02a6d20>] wlc_dpc+0x710/0xa70 [wl]
[<80327a00>] start_kernel+0x2c/0x4c4
[<c029e058>] wlc_send_q+0x1d4/0x7f4 [wl]
[<c02a6d20>] wlc_dpc+0x710/0xa70 [wl]
[<80327a00>] start_kernel+0x2c/0x4c4
[<80327e00>] start_kernel+0x42c/0x4c4
[<800032f0>] stack_done+0x20/0x40

.
.
.
.

WARNING: at mm/slub.c:2432 kfree()
Call Trace:
[<c02a0a18>] wlc_recvdata+0xa60/0xdf4 [wl]
[<c029e0dc>] wlc_send_q+0x258/0x7f4 [wl]
[<c029c0c0>] wlc_dotxstatus+0xbe8/0x11fc [wl]
[<c02a6d94>] wlc_dpc+0x784/0xa70 [wl]
[<80327e00>] start_kernel+0x42c/0x4c4
[<c0296e38>] wl_intrson+0x228/0x3bc [wl]
[<80327e00>] start_kernel+0x42c/0x4c4
[<80001524>] ret_from_irq+0x0/0x4
[<80001524>] ret_from_irq+0x0/0x4
[<800032f0>] stack_done+0x20/0x40

With this, it seems that my router is not reachable via Web-IF (ssh works, though).
After reboot, no message like this and everything is fine.

you may try to re-compile whole firmware with SLAB allocator turned on by default in kernel, maybe it'd help (by default SLUB is selected).

it helped me to reduce load on my wl500gP equipped with BCM43222.

Regarding the ports-problems --> what is the preferred way to enable UPnP?

Thanks for help,
pheidrias

Check Virtual Server in WEB interface, I do not trust uPNP, better forward certain ports to your computer/router.