Tried the test firmware, but unfortunately got exactly the same problem.
Printer is an HP PSC 2210.
Below the log:
Apr 18 13:15:22 WL500g user.warn klogd: Oops in fault.c::do_page_fault, line 192:
Apr 18 13:15:22 WL500g user.warn klogd: $0 : 00000000 c00a0000 0000006e c00a77a7 c00a7f3f 00000000 ffffffff c00a7ef8
Apr 18 13:15:22 WL500g user.warn klogd: $8 : 00004366 0000000a 00000000 00000000 8019132a fffffff9 0000000a 807bdcb2
Apr 18 13:15:22 WL500g user.warn klogd: $16: 00000001 80133058 80a2cc02 00000000 807fc3b8 80ac2800 00000000 c009c460
Apr 18 13:15:22 WL500g user.warn klogd: $24: ffffffff 00000002 807bc000 807bdde0 00000000 c00a5440
Apr 18 13:15:22 WL500g user.warn klogd: Hi : 00000000
Apr 18 13:15:22 WL500g user.warn klogd: Lo : 00000042
Apr 18 13:15:22 WL500g user.warn klogd: epc : c00a53b4 Not tainted
Apr 18 13:15:22 WL500g user.warn klogd: Status: 1000fc03
Apr 18 13:15:22 WL500g user.warn klogd: Cause : 00000008
Apr 18 13:15:22 WL500g user.warn klogd: Process khubd (pid: 533, stackpage=807bc000)
Apr 18 13:15:22 WL500g user.warn klogd: Stack: c00a773c 00000000 0000009e 80a2cc02 00000001 00000000 80a2cc00
Apr 18 13:15:22 WL500g user.warn klogd: 000003ff 80ac2a00 c00a5000 c00a7844 80010fac c00a6ec8 c00a6e4c c00a79c0
Apr 18 13:15:22 WL500g user.warn klogd: 80183a64 807fc6a0 00000002 00000001 00000000 00000002 000003f0 00002911
Apr 18 13:15:22 WL500g user.warn klogd: 807fc383 0030706c 80ac49e0 c00a7df8 00000001 c00a7db4 c00a7e18 c008b484
Apr 18 13:15:22 WL500g user.warn klogd: c008bf90 00000190 c0080008 c009c5e0 80010fac 80ac2828 00000018 00000002
Apr 18 13:15:22 WL500g user.warn klogd: 80ac2800 ...
Apr 18 13:15:22 WL500g user.warn klogd: Call Trace: [<c00a773c>] [<c00a7844>] [<80010fac>] [<c00a6ec8>] [<c00a6e4c>]
Apr 18 13:15:22 WL500g user.warn klogd: [<c00a79c0>] [<c00a7df8>] [<c00a7db4>] [<c00a7e18>] [<c008b484>] [<c008bf90>]
Apr 18 13:15:22 WL500g user.warn klogd: [<c0080008>] [<c009c5e0>] [<80010fac>] [<c008b2c4>] [<c008b0f4>] [<c008b960>]
Apr 18 13:15:22 WL500g user.warn klogd: [<c0095fc4>] [<80010fac>] [<c009c4c4>] [<c008e4d4>] [<c008e460>] [<80010fac>]
Apr 18 13:15:22 WL500g user.warn klogd: [<c0090964>] [<c009a7ac>] [<c00901c4>] [<c008f2fc>] [<80010fac>] [<c00906d0>]
Apr 18 13:15:22 WL500g user.warn klogd: [<c0090ca0>] [<8000d04c>] [<8000cda8>] [<c009c4d0>] [<8000eb64>] [<8000ea80>]
Apr 18 13:15:22 WL500g user.warn klogd: [<c009c4e0>] [<c009c4d0>] [<c0090a50>] [<c0090fe4>] [<800113f4>] ...
Apr 18 13:15:22 WL500g user.warn klogd:
Apr 18 13:15:22 WL500g user.warn klogd: Code: 10a00021 00008021 24a50004 <80a30000> 2402003b 10620003 00003021 1200000c 00a01821
