On my freshly built 3.14-rc1 kernel, I get the following new warning splat from
slub:
[ 69.008845] ------------[ cut here ]------------
[ 69.008861] WARNING: CPU: 0 PID: 1578 at mm/slub.c:1007
deactivate_slab+0x4bb/0x520()
[ 69.008863] Modules linked in: rfcomm nfs fscache af_packet lockd sunrpc bnep
rtl8723be arc4 rtl8723_common b43 rtl_pci rtlwifi mac80211 cfg80211 btusb bl
uetooth powernow_k8 kvm_amd kvm snd_hda_intel snd_hda_codec bcma snd_hwdep r852
sdhci_pci sdhci snd_pcm sr_mod snd_seq ssb cdrom forcedeth sm_common pcspkr s
nd_timer serio_raw snd_seq_device snd nand mtd mmc_core rfkill ata_generic
pata_amd nand_ids nand_bch bch nand_ecc 6lowpan_iphc soundcore btcoexist r592 ac v
ideo memstick button battery sg dm_mod autofs4 thermal processor thermal_sys hwmon
[ 69.008934] CPU: 0 PID: 1578 Comm: akonadi_newmail Not tainted 3.14.0-rc1-wl+ #60
[ 69.008936] Hardware name: Hewlett-Packard HP Pavilion dv2700 Notebook
PC/30D6, BIOS F.27 11/27/2008
[ 69.008939] 0000000000000009 ffff880085ab1cd0 ffffffff815ee4a0 0000000000000000
[ 69.008945] ffff880085ab1d08 ffffffff8104e768 ffffea0001ee69c0 ffff8800bb401800
[ 69.008950] 0000000000000000 ffff8800bb400c80 0000000000000002 ffff880085ab1d18
[ 69.008956] Call Trace:
[ 69.008965] [<ffffffff815ee4a0>] dump_stack+0x4d/0x6f
[ 69.008971] [<ffffffff8104e768>] warn_slowpath_common+0x78/0xa0
[ 69.008976] [<ffffffff8104e845>] warn_slowpath_null+0x15/0x20
[ 69.008980] [<ffffffff8118581b>] deactivate_slab+0x4bb/0x520
[ 69.008985] [<ffffffff81183429>] ? new_slab+0x1f9/0x300
[ 69.008989] [<ffffffff815ebe57>] __slab_alloc+0x34d/0x4f5
[ 69.008994] [<ffffffff81185a6b>] ? kmem_cache_alloc+0x18b/0x1c0
[ 69.008999] [<ffffffff810770d1>] ? prepare_creds+0x21/0x1a0
[ 69.009003] [<ffffffff810770d1>] ? prepare_creds+0x21/0x1a0
[ 69.009007] [<ffffffff81185a6b>] kmem_cache_alloc+0x18b/0x1c0
[ 69.009011] [<ffffffff810770d1>] prepare_creds+0x21/0x1a0
[ 69.009016] [<ffffffff8119f955>] SyS_access+0x35/0x1f0
[ 69.009019] [<ffffffff815fe8a2>] system_call_fastpath+0x16/0x1b
[ 69.009019] ---[ end trace c63f75644bfb030a ]---
There is a similar warning for my other CPU as well. The warning comes from
"lockdep_assert_held(&n->list_lock);".
If needed, I can bisect this issue.
Larry
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>