On Thu, Dec 12, 2013 at 04:56:20PM -0700, Bjorn Helgaas wrote: > On Thu, Dec 12, 2013 at 4:17 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > > On Sat, Dec 7, 2013 at 12:41 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote: > >> On Wed, Nov 27, 2013 at 11:46 AM, Greg Kroah-Hartman > >> <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > >>> From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > >>> > >>> The PCI MSI sysfs code is a mess with kobjects for things that don't > >>> really need to be kobjects. This patch creates attributes dynamically > >>> for the MSI interrupts instead of using kobjects. > >>> > >>> Note, this removes a directory from the current MSI interrupt sysfs > >>> code: > >>> > >>> old MSI kobjects: > >>> pci_device > >>> └── msi_irqs > >>> └── 40 > >>> └── mode > >>> > >>> new MSI attributes: > >>> pci_device > >>> └── msi_irqs > >>> └── 40 > >>> > >>> As there was only one file "mode" with the kobject model, the interrupt > >>> number is now a file that returns the "mode" of the interrupt (msi vs. > >>> msix). > >>> > >>> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > >> > >> I added the acks from Neil and Veaceslav, folded in the > >> Documentation/ABI update, and applied the whole thing to my pci/misc > >> branch for v3.14. Thanks! > > > > got: > > [ 71.429735] BUG: key ffff887fcf082a58 not in .data! > > [ 71.429737] ------------[ cut here ]------------ > > [ 71.429742] WARNING: CPU: 0 PID: 4 at kernel/locking/lockdep.c:2987 lockdep_i > > nit_map+0x127/0x5b0() > > [ 71.429743] DEBUG_LOCKS_WARN_ON(1) > > [ 71.429744] Modules linked in: > > [ 71.429747] CPU: 0 PID: 4 Comm: kworker/0:0 Tainted: G I 3.13.0-rc3 > > -yh-01187-ge0e4e4e-dirty #45 > > [ 71.429757] Workqueue: events work_for_cpu_fn > > [ 71.429792] 0000000000000009 ffff881fcf95da58 ffffffff82020475 ffff881fcf95d > > aa0 > > [ 71.429800] ffff881fcf95da90 ffffffff81097c3d ffff887fcf082a58 ffff88dfcec1a > > d28 > > [ 71.429809] 0000000000000000 0000000000000000 ffff889fcf2eecd0 ffff881fcf95d > > af0 > > [ 71.429809] Call Trace: > > [ 71.429814] [<ffffffff82020475>] dump_stack+0x45/0x56 > > [ 71.429818] [<ffffffff81097c3d>] warn_slowpath_common+0x7d/0xa0 > > [ 71.429822] [<ffffffff81097cac>] warn_slowpath_fmt+0x4c/0x50 > > [ 71.429826] [<ffffffff810e3d97>] lockdep_init_map+0x127/0x5b0 > > [ 71.429835] [<ffffffff81242fe8>] ? sysfs_new_dirent+0x98/0x140 > > [ 71.429839] [<ffffffff81242033>] sysfs_add_file_mode_ns+0x63/0xc0 > > [ 71.429843] [<ffffffff8124491d>] internal_create_group+0x18d/0x260 > > [ 71.429853] [<ffffffff81556345>] ? populate_msi_sysfs+0x185/0x1d0 > > [ 71.429857] [<ffffffff81244a52>] sysfs_create_groups+0x42/0xa0 > > [ 71.429861] [<ffffffff81556367>] populate_msi_sysfs+0x1a7/0x1d0 > > [ 71.429865] [<ffffffff81556b67>] pci_enable_msi_block+0x1f7/0x2a0 > > [ 71.429870] [<ffffffff81549795>] pcie_port_device_register+0x335/0x520 > > [ 71.429874] [<ffffffff81549f08>] pcie_portdrv_probe+0x68/0xa0 > > [ 71.429883] [<ffffffff8153cf75>] local_pci_probe+0x45/0xa0 > > [ 71.429887] [<ffffffff810b0af4>] work_for_cpu_fn+0x14/0x20 > > [ 71.429891] [<ffffffff810b431b>] process_one_work+0x28b/0x4a0 > > [ 71.429895] [<ffffffff810b4292>] ? process_one_work+0x202/0x4a0 > > [ 71.429899] [<ffffffff810b55db>] worker_thread+0x26b/0x3a0 > > [ 71.429903] [<ffffffff810e262d>] ? trace_hardirqs_on+0xd/0x10 > > [ 71.429906] [<ffffffff810b5370>] ? manage_workers.isra.17+0x340/0x340 > > [ 71.429912] [<ffffffff810bc031>] kthread+0x111/0x120 > > [ 71.429919] [<ffffffff810cddab>] ? local_clock+0x2b/0x40 > > [ 71.429923] [<ffffffff810bbf20>] ? kthread_stop+0xf0/0xf0 > > [ 71.429927] [<ffffffff8203842c>] ret_from_fork+0x7c/0xb0 > > [ 71.429931] [<ffffffff810bbf20>] ? kthread_stop+0xf0/0xf0 > > [ 71.429933] ---[ end trace c511e3d74efea94e ]--- > > > > looks like Greg forgot adding attr init. > > > > Can you fold attached patch into Greg's patch ? > > Sure. I don't know how to reproduce it, so I couldn't verify the fix, > but I added it to Greg's patch. Thanks! I think lockdep has to be enabled for this to show up, I wasn't running with that enabled when I tested the code, my fault, sorry. greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
