On Mon 08-10-12 17:10:52, Neil Salstrom wrote: > On 10/08/2012 10:14 AM, Jan Kara wrote: > >On Sat 06-10-12 10:20:26, Neil Salstrom wrote: > >>I've not submitted a kernel bug before but I've read the bug > >>reporting pages. I'll try to do my best and if you need more > >>information please let me know. Please feel free to cc me on the > >>answer or if you have questions. > >> > >>I'm using Linux Mint 13 (64 bit) on AMD hardware with a self > >>compiled 3.6.0 kernel for my MythTV HTPC. > >> > >>Kernel version: Linux version 3.6.0 (gcc version 4.6.3 > >>(Ubuntu/Linaro 4.6.3-1ubuntu5) ) #1 SMP Tue Oct 2 15:34:46 PDT 2012 > >> > >>CPU: model name : AMD A6-3500 APU with Radeon(tm) HD Graphics > >> > >>If you need any other system variables please let me know and I can > >>get those as well. > >> > >>Upon shutdown or restart (from either the hard button on the case or > >>a "sudo shutdown -r now" the system crashes and does not actually > >>shut down. I can ssh in to the system and a dmesg shows the > >>following: > > There should be a line like: > >BUG: Dentry ... still in use (%d) [unmount of %s %s] > > > >just before the oops. Can you please post that one as well? Also I see that > >you are using nvidia module which taints the kernel. Can you try > >reproducing the issue without the module loaded? > > > > Honza > > Here is the full output with no nvidia module. I also have the full > dmeg from start to finish if you would like it. Thanks for the new report. Since the use count of the problematic dentry is 1, I guess this is really some bug in rpc_pipefs. Bruce, any idea?
Honza > [ 237.186167] BUG: Dentry ffff880118772540{i=6e,n=info} still in > use (1) [unmount of rpc_pipefs rpc_pipefs] > [ 237.186179] ------------[ cut here ]------------ > [ 237.186181] kernel BUG at fs/dcache.c:967! > [ 237.186182] invalid opcode: 0000 [#1] SMP > [ 237.186185] Modules linked in: nls_utf8 udf crc_itu_t nfsv4 > binfmt_misc nfsd nfs_acl auth_rpcgss nfs fscache lockd sunrpc > snd_hda_codec_hdmi snd_hda_codec_realtek xfs snd_hda_intel > snd_hda_codec snd_seq_midi snd_hwdep snd_rawmidi snd_pcm psmouse > snd_seq_midi_event rc_imon_mce serio_raw snd_seq imon rc_core > snd_timer snd_seq_device snd soundcore snd_page_alloc f71882fg r8169 > ahci libahci > [ 237.186203] CPU 2 > [ 237.186206] Pid: 3063, comm: umount Not tainted 3.6.0 #1 System > manufacturer System Product Name/F1A55-M LX PLUS > [ 237.186208] RIP: 0010:[<ffffffff8116c606>] [<ffffffff8116c606>] > shrink_dcache_for_umount_subtree+0x1e6/0x1f0 > [ 237.186214] RSP: 0018:ffff8801181afd98 EFLAGS: 00010296 > [ 237.186215] RAX: 000000000000005d RBX: ffff880118772540 RCX: > 00000000000014bd > [ 237.186217] RDX: 0000000000003256 RSI: 0000000000000046 RDI: > ffffffff81bbf9bc > [ 237.186218] RBP: ffff8801181afdb8 R08: 000000000000000a R09: > 0000000000000000 > [ 237.186219] R10: 0000000000000383 R11: 0000000000000382 R12: > ffff88011873b9c0 > [ 237.186220] R13: ffff8801177a2b80 R14: ffff8801177a2bb0 R15: > ffff88011287d800 > [ 237.186222] FS: 00007f67049b1800(0000) GS:ffff88011ed00000(0000) > knlGS:0000000000000000 > [ 237.186223] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 237.186225] CR2: 00007f3e1de80000 CR3: 0000000118a18000 CR4: > 00000000000007e0 > [ 237.186226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 237.186227] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 237.186229] Process umount (pid: 3063, threadinfo > ffff8801181ae000, task ffff880110fbc440) > [ 237.186230] Stack: > [ 237.186231] ffff88011287db50 ffff88011873b780 ffff88011287d800 > ffffffffa021d3c0 > [ 237.186233] ffff8801181afdd8 ffffffff8116de93 0000000000000001 > ffff88011287d800 > [ 237.186235] ffff8801181afe08 ffffffff811583bc ffff88011873b820 > 0000000000000015 > [ 237.186238] Call Trace: > [ 237.186241] [<ffffffff8116de93>] shrink_dcache_for_umount+0x33/0x60 > [ 237.186244] [<ffffffff811583bc>] generic_shutdown_super+0x2c/0xf0 > [ 237.186247] [<ffffffff81158516>] kill_anon_super+0x16/0x30 > [ 237.186249] [<ffffffff81158557>] kill_litter_super+0x27/0x30 > [ 237.186265] [<ffffffffa02174a9>] rpc_kill_sb+0x99/0xc0 [sunrpc] > [ 237.186268] [<ffffffff8115877c>] deactivate_locked_super+0x3c/0xa0 > [ 237.186270] [<ffffffff8115938e>] deactivate_super+0x4e/0x70 > [ 237.186273] [<ffffffff81174416>] mntput_no_expire+0x106/0x160 > [ 237.186276] [<ffffffff8117543e>] sys_umount+0x6e/0x3b0 > [ 237.186279] [<ffffffff81583d96>] system_call_fastpath+0x1a/0x1f > [ 237.186280] Code: 00 00 48 8b 40 28 4c 8b 08 48 8b 43 30 48 85 c0 > 74 04 48 8b 50 40 48 89 34 24 48 c7 c7 48 69 7c 81 48 89 de 31 c0 e8 > 09 62 40 00 <0f> 0b 0f 0b 66 0f 1f 44 00 00 55 48 89 e5 41 54 53 66 > 66 66 66 > [ 237.186301] RIP [<ffffffff8116c606>] > shrink_dcache_for_umount_subtree+0x1e6/0x1f0 > [ 237.186303] RSP <ffff8801181afd98> > [ 237.186320] ---[ end trace 74629a120592ec3c ]--- > [ 238.707925] mtrr: no MTRR for f9000000,e00000 found > [ 245.162939] imon:send_packet: task interrupted > [ 245.218338] nfsd: last server has exited, flushing export cache -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/