Messages in this thread | | | Date | Tue, 9 Mar 2004 14:39:22 -0800 | From | Andrew Morton <> | Subject | Re: [BUG] in generic.c, unloading alsa [Re: 2.6.4-rc2-mm1] |
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Malte Schröder <Malte.Schroeder@hanse.net> wrote: > > Hi, by trying to unload alsa (emu10k1) I get the following: > > ------------[ cut here ]------------ > kernel BUG at fs/proc/generic.c:664! > invalid operand: 0000 [#1] > PREEMPT > CPU: 0 > EIP: 0060:[<c0187be9>] Not tainted VLI > EFLAGS: 00010286 > EIP is at remove_proc_entry+0xe9/0x140 > eax: f3209cc0 ebx: f3fb85f0 ecx: f63d2140 edx: f7fece00 > esi: 00000005 edi: f375a140 ebp: 00000000 esp: f42ffe70 > ds: 007b es: 007b ss: 0068 > Process modprobe (pid: 1835, threadinfo=f42fe000 task=f23b7150) > Stack: f375a140 f375a188 f375a140 f3209dc0 f375a188 f9ada470 f375a240 00000080 > f9acfa7b f375a188 f3fb85c0 f74abe00 f74abe00 f9acf5b1 f375a240 f3fb85c0 > f42fe000 f9acddcf f74abe00 00000002 f22989c0 c0171bde f7ff7b2c f22989c0 > Call Trace: > [<f9acfa7b>] snd_info_unregister+0x3b/0x70 [snd] > [<f9acf5b1>] snd_info_card_free+0x31/0x60 [snd] > [<f9acddcf>] snd_card_free+0xef/0x230 [snd] > [<c0171bde>] destroy_inode+0x4e/0x50 > [<c016fca2>] dput+0x22/0x270 > [<f9b5e3a9>] snd_card_emu10k1_remove+0x19/0x30 [snd_emu10k1] > [<c01f1f8b>] pci_device_remove+0x3b/0x40
This means that the driver deleted a /proc directory while it still has live subdirectories. Arjan says this has been observed to lead to memory corruption later on.
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