From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 66821] New: "BUG: soft lockup" in proc_fd_link, causing freeze
Date: Tue, 10 Dec 2013 17:01:34 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=66821
Bug ID: 66821
Summary: "BUG: soft lockup" in proc_fd_link, causing freeze
Product: File System
Version: 2.5
Kernel Version: 3.13.0-rc3
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: ext4
Assignee: fs_ext4@kernel-bugs.osdl.org
Reporter: andreas.reis@gmail.com
Regression: No
Created attachment 118011
--> https://bugzilla.kernel.org/attachment.cgi?id=118011&action=edit
dmesg output during progressing freeze
Getting this since a few days randomly either as immediate freeze or
progressing system freeze. I'm not sure if that's the same bug though (nor if I
put this report in the right product/component category, just guessing by the
trace).
It starts with
general protection fault: 0000 [#1] PREEMPT SMP
path_get+0x15/0x30
proc_fd_link+0x9e/0xf0
proc_pid_readlink+0x3f/0xe0
SyS_readlinkat+0xeb/0x130
system_call_fastpath+0x1a/0x1f
and becomes
BUG: soft lockup - CPU#5 stuck for 23s! [chrome-sandbox:11068]
proc_fd_link+0x69/0xf0
proc_pid_readlink+0x3f/0xe0
SyS_readlinkat+0xeb/0x130
system_call_fastpath+0x1a/0x1f
Notes:
* This is based only on one dmesg output; I haven't yet gotten around to
compare that of different freezes.
* Kernel is self-compiled via the current sources (17b2112f) in Torvald's git;
distro is Arch.
* Always appears to happen after the system has run for a while, ie. not right
after boot.
* root is btrfs, home is ext4, var is reiserfs.
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