[Bug 997639] New: backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760 - openSUSE Bugs - openSUSE Mailing Lists

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[Bug 997639] New: backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

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bugzilla_noreply＠novell.com

7 Sep 2016 7 Sep '16

14:30

http://bugzilla.suse.com/show_bug.cgi?id=997639 Bug ID: 997639 Summary: backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760 Classification: openSUSE Product: openSUSE Distribution Version: Leap 42.2 Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: meissner@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- leap 42.2 current beta: uname -a Linux westernhagen 4.4.19-1-default #1 SMP Fri Aug 26 14:09:03 UTC 2016 (669e7ae) x86_64 x86_64 x86_64 GNU/Linux [436126.572250] BUG: sleeping function called from invalid context at ../fs/dcache.c:760 [436126.572253] in_atomic(): 1, irqs_disabled(): 0, pid: 32309, name: automount [436126.572255] CPU: 4 PID: 32309 Comm: automount Tainted: G IO 4.4.19-1-default #1 [436126.572256] Hardware name: Dell Inc. Precision WorkStation T3500 /09KPNV, BIOS A15 03/28/2012 [436126.572261] 0000000000000000 ffffffff81326827 ffff880305693798 ffff8802f1fb4860 [436126.572264] ffffffff8121ae0a ffff8801000fbd50 ffff8802f1fb4860 ffff8803016186a0 [436126.572264] 0000000000000000 ffffffff8120de92 ffff880305693798 ffff880305693798 [436126.572267] Call Trace: [436126.572278] [<ffffffff81019e69>] dump_trace+0x59/0x320 [436126.572283] [<ffffffff8101a22a>] show_stack_log_lvl+0xfa/0x180 [436126.572287] [<ffffffff8101afd1>] show_stack+0x21/0x40 [436126.572291] [<ffffffff81326827>] dump_stack+0x5c/0x85 [436126.572295] [<ffffffff8121ae0a>] dput+0x2a/0x250 [436126.572301] [<ffffffff8120de92>] follow_down_one+0x22/0x50 [436126.572307] [<ffffffffa0002ec4>] autofs4_mount_busy+0x34/0x110 [autofs4] [436126.572311] [<ffffffffa000327e>] should_expire+0x4e/0x3c0 [autofs4] [436126.572315] [<ffffffffa00038dc>] autofs4_expire_indirect+0x1bc/0x390 [autofs4] [436126.572319] [<ffffffffa0003dc2>] autofs4_do_expire_multi+0x92/0xa0 [autofs4] [436126.572323] [<ffffffffa0004780>] _autofs_dev_ioctl+0x2a0/0x340 [autofs4] [436126.572329] [<ffffffffa000482f>] autofs_dev_ioctl+0xf/0x20 [autofs4] [436126.572333] [<ffffffff8121710c>] do_vfs_ioctl+0x30c/0x570 [436126.572343] [<ffffffff812173e4>] SyS_ioctl+0x74/0x80 [436126.572348] [<ffffffff81607ef2>] entry_SYSCALL_64_fastpath+0x16/0x71 [436126.574784] DWARF2 unwinder stuck at entry_SYSCALL_64_fastpath+0x16/0x71 [436126.574787] Leftover inexact backtrace: -- You are receiving this mail because: You are on the CC list for the bug.

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bugzilla_noreply＠novell.com

7 Sep 7 Sep

15:21

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c1 Takashi Iwai changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tiwai@suse.com --- Comment #1 from Takashi Iwai --- It looks like a bug I've been hitting with the upstream kernel, too. Strangely it appears since recently. I got a fix patch from the upstream dev, but it's still not merged to upstream tree. -- You are receiving this mail because: You are on the CC list for the bug.

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15:23

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 Takashi Iwai changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |nfbrown@suse.com -- You are receiving this mail because: You are on the CC list for the bug.

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15:24

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c2 --- Comment #2 from Takashi Iwai --- Created attachment 691196 --> http://bugzilla.suse.com/attachment.cgi?id=691196&action=edit Fix patch -- You are receiving this mail because: You are on the CC list for the bug.

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15:55

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c3 Takashi Iwai changed: What |Removed |Added ---------------------------------------------------------------------------- Flags| |needinfo?(nfbrown@suse.com) --- Comment #3 from Takashi Iwai --- I merged the fix to master and stable branches. But it's not cleanly applicable to older kernels. Neil, could you take a look at it? -- You are receiving this mail because: You are on the CC list for the bug.

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8 Sep 8 Sep

00:26

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c4 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|kernel-maintainers@forge.pr |nfbrown@suse.com |ovo.novell.com | --- Comment #4 from Neil Brown --- That patch is imperfect. + schedule_timeout(HZ/10); should be + schedule_timeout_uninterruptible(HZ/10); There is a similar bug in fscache_object_sleep_till_congested() A quick look suggests the problem goes back quite a way, probably at least to Commit: 97e7449a7ad8 ("autofs4: fix indirect mount pending expire race") in 2.6.27. So I probably need to examine each kernel and see if there is a problem to fix, rather than trying to backport. -- You are receiving this mail because: You are on the CC list for the bug.

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00:54

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c5 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jslaby@suse.com Flags| |needinfo?(jslaby@suse.com) --- Comment #5 from Neil Brown --- On closer examination, I don't think anything needs to be backported as long as Commit: 47be61845c77 ("fs/dcache.c: avoid soft-lockup in dput()") doesn't slip in through -stable. It is in 4.4-stable, which is why SLE12-SP2 has the problem. Jiri: could you make sure 47be61845c77 doesn't get into 3.12-stable? I don't think it is really all that important. If someone does want it, we at least need to fix autofs. There may be other fallout. -- You are receiving this mail because: You are on the CC list for the bug.

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13:06

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c6 --- Comment #6 from Takashi Iwai --- (In reply to Neil Brown from comment #4)

That patch is imperfect. + schedule_timeout(HZ/10); should be + schedule_timeout_uninterruptible(HZ/10);

Good catch, I'll update the patch for stable/master branches.

There is a similar bug in fscache_object_sleep_till_congested()

Care to report both issues to upstream? Thanks. -- You are receiving this mail because: You are on the CC list for the bug.

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9 Sep 9 Sep

01:57

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c7 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- Flags|needinfo?(nfbrown@suse.com) | --- Comment #7 from Neil Brown ---

Care to report both issues to upstream? Thanks.

Done. https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1227516.html -- You are receiving this mail because: You are on the CC list for the bug.

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15 Sep 15 Sep

10:15

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c8 --- Comment #8 from Takashi Iwai --- The fix for SLE12-SP2 / openSUSE-42.2 is still missing and it would need more changes in addition. The upstream has a commit ea01a18494b3d7a91b2f1f2a6a5aaef4741bc294 autofs races Neil, could you check this as well? -- You are receiving this mail because: You are on the CC list for the bug.

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17 Sep 17 Sep

14:29

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c10 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jeffm@suse.com Flags| |needinfo?(jeffm@suse.com) --- Comment #10 from Neil Brown --- Sorry, I didn't get to finish this, and I am now on leave. We have two options. 1/ backport ea01a18494b3d7a91b2f1f2a6 and http://ozlabs.org/~akpm/mmotm/broken-out/autofs-use-dentry-flags-to-block-wa... or 2/ revert 47be6184 I'm not convinced that 47be patch is really all that helpful, but it probably makes sense to stay with mainline. The two patches needing backporting are non-trivial so I wanted to review them properly before committing them, and with everything else happening I didn't manage that. I have no reason to doubt them, except that I doubt everything. Maybe you could look, Jeff, before I get back? -- You are receiving this mail because: You are on the CC list for the bug.

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20 Sep 20 Sep

10:34

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c11 --- Comment #11 from Takashi Iwai --- FYI, the fix patch was merged to Linus tree, commit 7cbdb4a286a60c5d519cb9223fe2134d26870d39 -- You are receiving this mail because: You are on the CC list for the bug.

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26 Sep 26 Sep

17:53

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c12 Takashi Iwai changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |lnussel@suse.com --- Comment #12 from Takashi Iwai --- *** Bug 1001232 has been marked as a duplicate of this bug. *** -- You are receiving this mail because: You are on the CC list for the bug.

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28 Sep 28 Sep

13:35

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c13 --- Comment #13 from Takashi Iwai --- Two fix commits were queued to 4.4.x stable now, so the upstream took option 1. I'll merge the patches now so that they'll be fixed for openSUSE-42.2 beta3 in time. -- You are receiving this mail because: You are on the CC list for the bug.

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13:47

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c14 Takashi Iwai changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED Target Milestone|--- |Leap 42.2 RC 1 Flags|needinfo?(jeffm@suse.com) | --- Comment #14 from Takashi Iwai --- Bah, I forgot that Jeff already worked on this and the fixes have been merged... Then let's close the bug now. It'll be included in openSUSE-42.2 beta3 (or RC1) and SLE12-SP2 update. -- You are receiving this mail because: You are on the CC list for the bug.

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30 Sep 30 Sep

04:49

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c15 --- Comment #15 from Neil Brown --- Hi Takashi, I'm confused by the above. SLE12-SP2 doesn't contain the patches yet. and they aren't in v4.4.22. Do we just wait for 4.4.23 to get released and will it (and 4.4.22) get merged then? I note that you wrote in an email WE'LL TAKE ONLY P1 BUG FIXES UNTIL GM RELEASE. This bug isn't P1 ... so ... should we make it "P1"? I think that it is important to fix this before GM one way or another. -- You are receiving this mail because: You are on the CC list for the bug.

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06:57

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c16 --- Comment #16 from Takashi Iwai --- P1-policy is only about SLE12-SP2 main branch. Jeff has already sent the patches as post-GM fixes, and they are found in users/tiwai/SLE12-SP2/for-update branch. And openSUSE-42.2 still keeps merging from SLE12-SP2/for-update branch (since it's still in beta), so openSUSE-42.2 contains more fixes than SLE12-SP2 GM as of now. (You can submit other non-P1 fixes to for-update branch even now, too, as mentioned in my announcement :) -- You are receiving this mail because: You are on the CC list for the bug.

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07:58

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c17 --- Comment #17 from Neil Brown ---

they are found in users/tiwai/SLE12-SP2/for-update branch.

Ahhh, I see. Still, it seems less than ideal that anyone use autofs on SP2 GM will likely get BUG: sleeping function called from invalid context warnings... -- You are receiving this mail because: You are on the CC list for the bug.

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08:28

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c18 --- Comment #18 from Takashi Iwai --- (In reply to Neil Brown from comment #17)

...
they are found in users/tiwai/SLE12-SP2/for-update branch.

Ahhh, I see.

Still, it seems less than ideal that anyone use autofs on SP2 GM will likely get BUG: sleeping function called from invalid context

warnings...

If these fixes are 100% safe to apply to GM, no problem to take them. If you're confident, please just talk to release managers. The P1-only is merely a basic rule, and a rule has always an exception :) -- You are receiving this mail because: You are on the CC list for the bug.

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7 Oct 7 Oct

06:19

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c19 Stefan Behlert changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED CC| |behlert@suse.com Resolution|FIXED |--- --- Comment #19 from Stefan Behlert --- Re-opening following a discussion with Neil, looks like we have to revert for SP2 :/ Revert approved. -- You are receiving this mail because: You are on the CC list for the bug.

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13 Oct 13 Oct

11:18

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c21 --- Comment #21 from Ludwig Nussel --- What's the status for Leap here? Will we have the fix? -- You are receiving this mail because: You are on the CC list for the bug.

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11:56

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c22 --- Comment #22 from Ruediger Meier --- (In reply to Ludwig Nussel from comment #21)

What's the status for Leap here? Will we have the fix?

I don't see this bug anymore in 42.2 kernel version 4.4.22. -- You are receiving this mail because: You are on the CC list for the bug.

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17 Oct 17 Oct

10:18

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c23 --- Comment #23 from Takashi Iwai --- openSUSE-42.2 contains the upstream fixes as mentioned in comment 16. -- You are receiving this mail because: You are on the CC list for the bug.

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27 Oct 27 Oct

03:18

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c24 Neil Brown changed: What |Removed |Added ---------------------------------------------------------------------------- Status|REOPENED |RESOLVED Resolution|--- |FIXED Flags|needinfo?(jslaby@suse.com) | --- Comment #24 from Neil Brown --- The revert is in place for SP2:GA, and it has been removed in favour of the upstream fix in the "for-update" branch for SP2. So I'm closing this again now. -- You are receiving this mail because: You are on the CC list for the bug.

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14 Dec 14 Dec

19:20

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Whiteboard| |ibs:running:3814:important -- You are receiving this mail because: You are on the CC list for the bug.

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17 Jan 17 Jan

18:44

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 http://bugzilla.suse.com/show_bug.cgi?id=997639#c25 --- Comment #25 from Swamp Workflow Management --- SUSE-SU-2017:0181-1: An update that solves 13 vulnerabilities and has 127 fixes is now available. Category: security (important) Bug References: 1000118,1000189,1000287,1000304,1000433,1000776,1001169,1001171,1001310,1001462,1001486,1001888,1002322,1002770,1002786,1003068,1003566,1003581,1003606,1003813,1003866,1003964,1004048,1004052,1004252,1004365,1004517,1005169,1005327,1005545,1005666,1005745,1005895,1005917,1005921,1005923,1005925,1005929,1006103,1006175,1006267,1006528,1006576,1006804,1006809,1006827,1006915,1006918,1007197,1007615,1007653,1007955,1008557,1008979,1009062,1009969,1010040,1010158,1010444,1010478,1010507,1010665,1010690,1010970,1011176,1011250,1011913,1012060,1012094,1012452,1012767,1012829,1012992,1013001,1013479,1013531,1013700,1014120,1014392,1014701,1014710,1015212,1015359,1015367,1015416,799133,914939,922634,963609,963655,963904,964462,966170,966172,966186,966191,966316,966318,966325,966471,969474,969475,969476,969477,969756,971975,971989,972993,974313,974842,974843,978907,979378,979681,981825,983087,983152,983318,985850,986255,986987,987641,987703,987805,988524,988715,990384,992555,993739,993841,993 891,994881,995278,997059,997639,997807,998054,998689,999907,999932 CVE References: CVE-2015-1350,CVE-2015-8964,CVE-2016-7039,CVE-2016-7042,CVE-2016-7425,CVE-2016-7913,CVE-2016-7917,CVE-2016-8645,CVE-2016-8666,CVE-2016-9083,CVE-2016-9084,CVE-2016-9793,CVE-2016-9919 Sources used: SUSE Linux Enterprise Workstation Extension 12-SP2 (src): kernel-default-4.4.38-93.1 SUSE Linux Enterprise Software Development Kit 12-SP2 (src): kernel-docs-4.4.38-93.3, kernel-obs-build-4.4.38-93.1 SUSE Linux Enterprise Server for Raspberry Pi 12-SP2 (src): kernel-default-4.4.38-93.1, kernel-source-4.4.38-93.1, kernel-syms-4.4.38-93.1 SUSE Linux Enterprise Server 12-SP2 (src): kernel-default-4.4.38-93.1, kernel-source-4.4.38-93.1, kernel-syms-4.4.38-93.1 SUSE Linux Enterprise Live Patching 12 (src): kgraft-patch-SLE12-SP2_Update_4-1-2.1 SUSE Linux Enterprise High Availability 12-SP2 (src): kernel-default-4.4.38-93.1 SUSE Linux Enterprise Desktop 12-SP2 (src): kernel-default-4.4.38-93.1, kernel-source-4.4.38-93.1, kernel-syms-4.4.38-93.1 -- You are receiving this mail because: You are on the CC list for the bug.

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21:20

New subject: [Bug 997639] backtraces in dmesg: sleeping function called from invalid context at ../fs/dcache.c:760

http://bugzilla.suse.com/show_bug.cgi?id=997639 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Whiteboard|ibs:running:3814:important | -- You are receiving this mail because: You are on the CC list for the bug.

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