linux-kernel - Lock Directory failure

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Message-ID: <20140818163209.GJ9662@saruman.home>
Date:	Mon, 18 Aug 2014 11:32:09 -0500
From:	Felipe Balbi <balbi@...com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	<hughd@...gle.com>,
	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>
Subject: Lock Directory failure

Hi folks,

with today's Linux next I keep getting below kernel error rather
frequently with my beagle bone black (ARM Cortex A8):

[    5.096203] systemd[1]: Mounting User Runtime Directory...
         Mounting User Runtime Directory...
[    5.135060] systemd[1]: Mounting Lock Directory...
         Mounting Lock Directory...
[    5.183453] systemd[1]: Started Various fixups to make systemd work better on Debian.
[    5.248340] systemd[1]: Starting Load Random Seed...
[    5.295601] Unable to handle kernel paging request at virtual address 6c617578
[    5.303340] pgd = de5c0000
[    5.306169] [6c617578] *pgd=00000000
[    5.309969] Internal error: Oops: 805 [#1] SMP ARM
[    5.314972] Modules linked in:
[    5.318170] CPU: 0 PID: 1092 Comm: mount Not tainted 3.17.0-rc1-next-20140818-00002-gd236526 #636
[    5.327433] task: de6d0dc0 ti: de350000 task.ti: de350000
[    5.333082] PC is at mnt_set_mountpoint+0x80/0x94
[    5.337996] LR is at _raw_spin_unlock+0x20/0x24
[    5.342723] pc : [<c0148114>]    lr : [<c0564f84>]    psr: 20000013
[    5.342723] sp : de351eb8  ip : 00000000  fp : 00000000
[    5.354705] r10: de024dc0  r9 : de250740  r8 : c01487ac
[    5.360157] r7 : de024dc0  r6 : ddd44468  r5 : de1ecc40  r4 : de250740
[    5.366969] r3 : 6c617574  r2 : de1eccb8  r1 : de6d0dc0  r0 : ddd444c8
[    5.373783] Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user
[    5.381230] Control: 10c5387d  Table: 9e5c0019  DAC: 00000015
[    5.387226] Process mount (pid: 1092, stack limit = 0xde350248)
[    5.393405] Stack: (0xde351eb8 to 0xde352000)
[    5.397952] 1ea0:                                                       de1ecc68 de1ecc40
[    5.406490] 1ec0: de1ecc40 00000000 c0824380 c0148690 00000001 00000000 c01487ac 00000000
[    5.415028] 1ee0: ddd44468 00000000 de022000 de1ecc40 de250740 de351f38 00000027 de6a7180
[    5.423567] 1f00: de151740 00000000 00000000 c01487ac 00000008 00000027 c087c3c0 de1ecc50
[    5.432105] 1f20: c0874cc0 c0149864 de6ae000 de6ae000 000250d8 c0080d4c de024dd0 ddd44468
[    5.440644] 1f40: de6aefff 00000000 21977150 00001000 de351f8c 00000000 de1e1000 000250b8
[    5.449182] 1f60: c0ed000e c000e604 de350000 00000000 000250d8 c014a52c de6ae000 00000006
[    5.457720] 1f80: c000e604 de151740 de6a7180 de6ae000 c0ed000e 00025150 00023548 c0ed000e
[    5.466259] 1fa0: 00000015 c000e440 00025150 00023548 000250b8 000250c8 000250d8 c0ed000e
[    5.474797] 1fc0: 00025150 00023548 c0ed000e 00000015 be8deb7c 00000000 00025150 000250d8
[    5.483335] 1fe0: b6e125f0 be8deaf8 0000c708 b6e12600 60000010 000250b8 00000000 00000000
[    5.491887] [<c0148114>] (mnt_set_mountpoint) from [<c0148690>] (attach_recursive_mnt+0x278/0x294)
[    5.501244] [<c0148690>] (attach_recursive_mnt) from [<c01487ac>] (do_add_mount+0x90/0xd8)
[    5.509875] [<c01487ac>] (do_add_mount) from [<c0149864>] (do_mount+0x234/0xb78)
[    5.517599] [<c0149864>] (do_mount) from [<c014a52c>] (SyS_mount+0x84/0xb8)
[    5.524877] [<c014a52c>] (SyS_mount) from [<c000e440>] (ret_fast_syscall+0x0/0x48)
[    5.532783] Code: e594300c e2852078 e3530000 e5853078 (15832004) 
[    5.539224] ---[ end trace 29fe002647800da6 ]---

since that's mounted as tmpfs, adding Hugh

-- 
balbi

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