Hello,
I updated from 3.4.69-rt86 to 3.4.75-rt93 on an iMX.537 ARM platform.
Basically the kernel works but I get the following error messages during
boot:
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
ftrace: allocating 13405 entries in 40 pages
------------[ cut here ]------------
WARNING: at kernel/trace/ftrace.c:1589 ftrace_bug+0x74/0x174()
Modules linked in:
Backtrace:
[<c0011bfc>] (dump_backtrace+0x0/0x10c) from [<c030dde4>]
(dump_stack+0x20/0x24)
r6:c0073060 r5:00000009 r4:00000000 r3:271ae957
[<c030ddc4>] (dump_stack+0x0/0x24) from [<c001f268>]
(warn_slowpath_common+0x5c/0x74)
[<c001f20c>] (warn_slowpath_common+0x0/0x74) from [<c001f33c>]
(warn_slowpath_null+0x2c/0x34)
r8:000008c9 r7:60000153 r6:df807bc0 r5:c0071268 r4:c048a3a0
r3:00000009
[<c001f310>] (warn_slowpath_null+0x0/0x34) from [<c0073060>]
(ftrace_bug+0x74/0x174)
[<c0072fec>] (ftrace_bug+0x0/0x174) from [<c0073600>]
(ftrace_process_locs+0x39c/0x474)
r5:c04d0f40 r4:00000000
[<c0073264>] (ftrace_process_locs+0x0/0x474) from [<c0426880>]
(ftrace_init+0x98/0x1a4)
[<c04267e8>] (ftrace_init+0x0/0x1a4) from [<c041b7d0>]
(start_kernel+0x294/0x2dc)
r8:70004059 r7:c0911e80 r6:c043aeac r5:ffffffff r4:c0456860
[<c041b53c>] (start_kernel+0x0/0x2dc) from [<70008040>] (0x70008040)
r7:c0459764 r6:c043aea8 r5:c0456050 r4:10c53c7d
---[ end trace 0000000000000001 ]---
ftrace failed to modify [<c0071268>] ftrace_swap_recs+0x2c/0x3c
actual: 07:00:8e:e8
Setting up static identity map for 0x703136b8 - 0x70313710
devtmpfs: initialized
Has someone a tip whats the problem ?
Best regards,
Matthias
------ Originalnachricht ------
Von: "Steven Rostedt" <rostedt@xxxxxxxxxxx>
An: "LKML" <linux-kernel@xxxxxxxxxxxxxxx>; "linux-rt-users"
<linux-rt-users@xxxxxxxxxxxxxxx>
Cc: "Thomas Gleixner" <tglx@xxxxxxxxxxxxx>; "Carsten Emde"
<C.Emde@xxxxxxxxx>; "John Kacur" <jkacur@xxxxxxxxxx>; "Sebastian Andrzej
Siewior" <bigeasy@xxxxxxxxxxxxx>
Gesendet: 04.01.2014 03:33:08
Betreff: [ANNOUNCE] 3.4.75-rt93
Dear RT Folks,
I'm pleased to announce the 3.4.75-rt93 stable release.
This release is just an update to the new stable 3.4.75 version
and no RT specific changes have been made.
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
branch: v3.4-rt
Head SHA1: 9d111c9c3814158097723d27029a9d214a8cd20e
Or to build 3.4.75-rt93 directly, the following patches should be
applied:
http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.4.tar.xz
http://www.kernel.org/pub/linux/kernel/v3.x/patch-3.4.75.xz
http://www.kernel.org/pub/linux/kernel/projects/rt/3.4/patch-3.4.75-rt93.patch.xz
Enjoy,
-- Steve
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