From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <407D2786.3080801@imc-berlin.de> Date: Wed, 14 Apr 2004 13:59:02 +0200 From: Steven Scholz MIME-Version: 1.0 To: LinuxPPC Subject: Re: kfree_skb on hard IRQ ??? References: <407C065A.9010004@imc-berlin.de> <407C1601.2080100@imc-berlin.de> In-Reply-To: <407C1601.2080100@imc-berlin.de> Content-Type: text/plain; charset=us-ascii; format=flowed Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Steven Scholz wrote: > And what means > > alloc_skb called nonatomically from interrupt c00eb8d0 > kernel BUG at skbuff.c:174! > Oops: Kernel Mode Software FPU Emulation, sig: 8 > NIP: C00E065C XER: 00000000 LR: C00E065C SP: C016BC80 REGS: c016bbd0 TRAP: > 1000 Not tainted > MSR: 00001032 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11 > TASK = c0169fa0[0] 'swapper' Last syscall: 120 > last math 00000000 last altivec 00000000 > ... > Kernel panic: Aiee, killing interrupt handler! > In interrupt handler - not syncing > <0>Rebooting in 10 seconds.. BTW the backtrace shows 0xc00dd374 -- 0xc00dd2f4 + 0x0080 alloc_skb 0xc00e85e8 -- 0xc00e85c0 + 0x0028 rtmsg_ifinfo 0xc00e8bb4 -- 0xc00e8b50 + 0x0064 rtnetlink_event 0xc001c200 -- 0xc001c1c0 + 0x0040 notifier_call_chain 0xc00e1668 -- 0xc00e15b0 + 0x00b8 dev_close 0xc00e3b84 -- 0xc00e3b60 + 0x0024 unregister_netdevice 0xc00b396c -- 0xc00b394c + 0x0020 unregister_netdev 0xc39c320c -- 0xc01afe08 + 0x3813404 _end 0xc39c5bbc -- 0xc01afe08 + 0x3815db4 _end 0xc39a8b60 -- 0xc01afe08 + 0x37f8d58 _end 0xc39a8c80 -- 0xc01afe08 + 0x37f8e78 _end 0xc39b4dac -- 0xc01afe08 + 0x3804fa4 _end 0xc0003844 -- 0xc00036b4 + 0x0190 ppc_irq_dispatch_handler 0xc0003924 -- 0xc00038e8 + 0x003c do_IRQ The irq comes from unplugging the WLAN pcmcia card without calling "cardctl eject" before (which btw worked for every other wlan card so far). Ideas? Steven ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/