Messages in this thread | | | From | (Eric W. Biederman) | Subject | Re: [Bug 7505] Linux-2.6.19 fails to boot on AMD64 machine | Date | Thu, 30 Nov 2006 14:46:48 -0700 |
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bugme-daemon@bugzilla.kernel.org writes:
> http://bugzilla.kernel.org/show_bug.cgi?id=7505
> one. I think this was a better bisection and I got this
> Bisecting: 1 revisions left to test after this > [d71374dafbba7ec3f67371d3b7e9f6310a588808] PCI: fix race with pci_walk_bus and > pci_destroy_dev > d71374dafbba7ec3f67371d3b7e9f6310a588808 is first bad commit > commit d71374dafbba7ec3f67371d3b7e9f6310a588808 > Author: Zhang Yanmin <yanmin.zhang@intel.com> > Date: Fri Jun 2 12:35:43 2006 +0800 > > [PATCH] PCI: fix race with pci_walk_bus and pci_destroy_dev > > pci_walk_bus has a race with pci_destroy_dev. When cb is called > in pci_walk_bus, pci_destroy_dev might unlink the dev pointed by next. > Later on in the next loop, pointer next becomes NULL and cause > kernel panic. > > Below patch against 2.6.17-rc4 fixes it by changing pci_bus_lock (spin_lock) > to pci_bus_sem (rw_semaphore). > > Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> > > :040000 040000 570ec0423dac5f57a4b7db859e4f502fab422b4d > 3fbe35bcc512418894e9ae3862f44363b8b0ab4e M drivers >
Let's try and discussing this someplace where people are watching. Bugzilla seems to be a horrible medium for tracking down bugs.
Does reverting the above commit allow later kernels to boot? Or do you still get the impossible oops?
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