On Saturday 31 May 2008 16:23:58 Stefanik Gábor wrote: > In the latest wireless-testing kernel, I get a panic when I try to > connect to a network or inject a packet in monitor mode using b43 > (stack obtained using kdump and crash): > > crash> bt -l > PID: 0 TASK: c0431340 CPU: 0 COMMAND: "swapper" > #0 [c04617bc] crash_kexec at c015ce2a > /usr/src/wl-hack/wireless-testing/kernel/kexec.c: 1077 > #1 [c046180c] die at c01054ba > /usr/src/wl-hack/wireless-testing/arch/x86/kernel/traps_32.c: 476 > #2 [c0461828] do_page_fault at c034ef1f > /usr/src/wl-hack/wireless-testing/arch/x86/mm/fault.c: 858 > #3 [c0461994] error_code (via page_fault) at c034d2e8 > /usr/src/wl-hack/wireless-testing/arch/i386/kernel/entry.S > EAX: 00000000 EBX: 00000000 ECX: f6103000 EDX: f75ed4a0 EBP: c0461a58 > DS: 007b ESI: 00000002 ES: 007b EDI: 00000074 > CS: 0060 EIP: f8dd3a99 ERR: ffffffff EFLAGS: 00010046 > #4 [c04619c8] b43_generate_txhdr at f8dd3a99 > #5 [c0461a5c] b43_dma_tx at f8dd83d7 > #6 [c0461ae4] b43_op_tx at f8dc4d32 > #7 [c0461afc] __ieee80211_tx at f89c3ed4 > #8 [c0461b14] ieee80211_master_start_xmit at f89c4b6d > #9 [c0461b74] dev_hard_start_xmit at c02d4cb5 > /usr/src/wl-hack/wireless-testing/net/core/dev.c: 1558 > #10 [c0461ba0] __qdisc_run at c02e678d > /usr/src/wl-hack/wireless-testing/net/sched/sch_generic.c: 155 > #11 [c0461bd8] dev_queue_xmit at c02d5172 > include/net/pkt_sched.h: 89 > #12 [c0461c04] ieee80211_subif_start_xmit at f89c45db > #13 [c0461cc0] dev_hard_start_xmit at c02d4cb5 > /usr/src/wl-hack/wireless-testing/net/core/dev.c: 1558 > #14 [c0461cec] __qdisc_run at c02e678d > /usr/src/wl-hack/wireless-testing/net/sched/sch_generic.c: 155 > #15 [c0461d24] dev_queue_xmit at c02d5172 > include/net/pkt_sched.h: 89 > #16 [c0461d50] neigh_resolve_output at c02dac3e > /usr/src/wl-hack/wireless-testing/net/core/neighbour.c: 1215 > #17 [c0461d90] ip6_output_finish at f8d55c9e > #18 [c0461db0] ip6_output2 at f8d57e63 > #19 [c0461dd4] ip6_output at f8d58418 > #20 [c0461e50] mld_sendpack at f8d70d8d > #21 [c0461ebc] mld_ifc_timer_expire at f8d71a94 > #22 [c0461ef0] run_timer_softirq at c0138547 > /usr/src/wl-hack/wireless-testing/kernel/timer.c: 798 > #23 [c0461f34] __do_softirq at c0134230 > /usr/src/wl-hack/wireless-testing/kernel/softirq.c: 234 > #24 [c0461f50] do_softirq at c0134318 > /usr/src/wl-hack/wireless-testing/kernel/softirq.c: 271 > #25 [c0461f5c] irq_exit at c01344b0 > /usr/src/wl-hack/wireless-testing/kernel/softirq.c: 310 > #26 [c0461f64] smp_apic_timer_interrupt at c0113583 > /usr/src/wl-hack/wireless-testing/arch/x86/kernel/apic_32.c: 619 > #27 [c0461f7c] apic_timer_interrupt at c0104963 > include/linux/kdev_t.h: 52 > #28 [c0461fbc] cpu_idle at c0102d69 > /usr/src/wl-hack/wireless-testing/arch/x86/kernel/process_32.c: 188 > > No out-of-tree patches applied on b43. (I used to have a patch > applied, but I removed it to test reproducibility of this crash.) > > Any ideas why this happens? Please provide more information. For example as for what "crash" means. Is this a NULL pointer dereference or whatever? Please put a few printks into b43_generate_txhdr() -- Greetings Michael. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
