Re: [Bugme-new] [Bug 8940] New: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000
Matthew Wilcox <[email protected]>
| Newsgroups | gmane.linux.scsi,gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
On Sun, Aug 26, 2007 at 12:52:07AM -0700, Andrew Morton wrote: > On Sat, 25 Aug 2007 09:47:40 -0700 (PDT) [email protected] wrote: > > Problem Description: I got this error message: > > BUG: unable to handle kernel NULL pointer dereference at virtual address > > 00000000 > > in dmesg output when connecting a USB device. Turning off > > CONFIG_SCSI_SCAN_ASYNC fixed the problem. Apparently there is a bug in SCSI > > core code. I don't think SCSI_SCAN_ASYNC is the problem. It's probably a coincidence. SCSI_SCAN_ASYNC doesn't touch the call-path reported in the backtrace. In any case, if it is SCSI_SCAN_ASYNC-related, there's an outstanding patch to fix the locking, which is slated for inclusion in 2.6.24. http://git.kernel.org/?p=linux/kernel/git/jejb/scsi-misc-2.6.git;a=commit;h=a93a091df8232fad60867d41fbc3be855a0b78f2 -- "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html