Messages in this thread | | | Date | Tue, 29 Jul 2014 11:05:56 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v3] x86, hotplug: fix llc shared map unreleased during cpu hotplug |
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On Tue, Jul 29, 2014 at 04:59:13PM +0800, Wanpeng Li wrote: > [ 220.262245] Call Trace: > [ 220.262252] [<ffffffff810e8396>] load_balance+0x156/0x980 > [ 220.262259] [<ffffffff816eeffe>] ? _raw_spin_unlock_irqrestore+0x2e/0xa0 > [ 220.262266] [<ffffffff810e9aa3>] idle_balance+0xe3/0x150 > [ 220.262270] [<ffffffff816ec4e7>] __schedule+0x797/0x8d0 > [ 220.262277] [<ffffffff816ec934>] schedule+0x24/0x70 > [ 220.262283] [<ffffffff816e9cd9>] schedule_timeout+0x119/0x1f0 > [ 220.262294] [<ffffffff810bb6e0>] ? lock_timer_base+0x70/0x70 > [ 220.262301] [<ffffffff816e9dc9>] schedule_timeout_uninterruptible+0x19/0x20 > [ 220.262308] [<ffffffff810bd3e8>] msleep+0x18/0x20 > [ 220.262317] [<ffffffff813aa11a>] lock_device_hotplug_sysfs+0x2a/0x50 > [ 220.262323] [<ffffffff813aa16e>] online_store+0x2e/0x80 > [ 220.262358] [<ffffffff813a873b>] dev_attr_store+0x1b/0x20
No, this is not what I meant. See, those numbers above only make the commit message unreadable and don't say a lot after time has passed or on another user's machine. What we rather want is this below, which shows how we ended up here but doesn't contain unnecessary and useless information.
Ok?
BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 IP: [..] find_busiest_group PGD 5a9d5067 PUD 13067 PMD 0 Oops: 0000 [#3] SMP [...] Call Trace: load_balance ? _raw_spin_unlock_irqrestore idle_balance __schedule schedule schedule_timeout ? lock_timer_base schedule_timeout_uninterruptible msleep lock_device_hotplug_sysfs online_store dev_attr_store sysfs_write_file vfs_write SyS_write system_call_fastpath
Thanks.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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