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Filename Latest commit message Latest commit date
Alexander Sverdlin 20fb654aef tools/lib/lockdep: Don't mix fd-based and stream IO 
Mixing fd-based and stream-base IO results in interleaved output like
following:

=====================================
liblockdep 4.7.6
-------------------------------------
conopal/372 is trying to release lock (0x3a45c) at:
/lib/libpt.so.2.17-alpha2(_ZN11PTimedMutex6SignalEv+0x3c) [0xb613c688]
but there are no more locks to release!
other info that might help us debug this:
no locks held by conopal/372.
stack backtrace:
=====================================
liblockdep 4.7.6
---------------------------------/usr/lib/liblockdep.so.4.7.6(+0x1e3c)[0xb67c2e3c]
/usr/lib/liblockdep.so.4.7.6(+0x5fe0)[0xb67c6fe0]
/usr/lib/liblockdep.so.4.7.6(+0x6450)[0xb67c7450]
/usr/lib/liblockdep.so.4.7.6(lock_release+0x5c)[0xb67c7c40]
/usr/lib/liblockdep.so.4.7.6(pthread_mutex_unlock+0x38)[0xb67c91d4]
/lib/libpt.so.2.17-alpha2(_ZN11PTimedMutex6SignalEv+0x3c)[0xb613c688]
/lib/libpt.so.2.17-alpha2(_ZN10PContainer14AssignContentsERKS_+0xe4)[0xb6160730]
/lib/libopal.so.3.17-alpha2(_ZN15OpalMediaFormat14AssignContentsERK10PContainer+0x90)[0xb6435edc]
/lib/libopal.so.3.17-alpha2(_ZN15OpalMediaFormataSERK7PString+0x68)[0xb643b610]
/lib/libopal.so.3.17-alpha2(_ZN15OpalMediaFormatC2EPKc+0x68)[0xb643b6cc]
/lib/libopal.so.3.17-alpha2(_ZN11OpalWAVFile14AddMediaFormatERK15OpalMediaFormat+0x330)[0xb66b2224]
/lib/libopal.so.3.17-alpha2(+0x2526f8)[0xb640c6f8]
/lib/ld-linux-armhf.so.3(+0x102f0)[0xb6f852f0]
/lib/ld-linux-armhf.so.3(+0x1044c)[0xb6f8544c]
/lib/ld-linux-armhf.so.3(+0xac4)[0xb6f75ac4]
/usr/lib/liblockdep.so.4.7.6(+0x1e3c)[0xb67c2e3c]
/usr/lib/liblockdep.so.4.7.6(+0x5fe0)[0xb67c6fe0]
/usr/lib/liblockdep.so.4.7.6(+0x6450)[0xb67c7450]
/usr/lib/liblockdep.so.4.7.6(lock_release+0x5c)[0xb67c7c40]
/usr/lib/liblockdep.so.4.7.6(pthread_mutex_unlock+0x38)[0xb67c91d4]
/lib/libpt.so.2.17-alpha2(_ZN11PTimedMutex6SignalEv+0x3c)[0xb613c688]
/lib/libopal.so.3.17-alpha2(_ZN15OpalMediaFormat14AssignContentsERK10PContainer+0x78)[0xb6435ec4]
/lib/libopal.so.3.17-alpha2(_ZN15OpalMediaFormataSERK7PString+0x68)[0xb643b610]
/lib/libopal.so.3.17-alpha2(_ZN15OpalMediaFormatC2EPKc+0x68)[0xb643b6cc]
/lib/libopal.so.3.17-alpha2(_ZN11OpalWAVFile14AddMediaFormatERK15OpalMediaFormat+0x330)[0xb66b2224]
/lib/libopal.so.3.17-alpha2(+0x2526f8)[0xb640c6f8]
/lib/ld-linux-armhf.so.3(+0x102f0)[0xb6f852f0]
/lib/ld-linux-armhf.so.3(+0x1044c)[0xb6f8544c]
/lib/ld-linux-armhf.so.3(+0xac4)[0xb6f75ac4]

Therefore change all bare printf(...) to dprintf(STDOUT_FILENO, ...) to
sychronize with backtrace_symbols_fd().

[ BUG: bad unlock balance detected! ]
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: a.p.zijlstra@chello.nl
Cc: ben@decadent.org.uk
Link: http://lkml.kernel.org/r/20170525130005.5947-12-alexander.levin@verizon.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-06-05 09:28:08 +02:00
arch Merge branch 'akpm' (patches from Andrew) 2017-06-02 15:49:46 -07:00
block block: Avoid that blk_exit_rl() triggers a use-after-free 2017-06-01 13:07:55 -06:00
certs
crypto crypto: skcipher - Add missing API setkey checks 2017-05-18 13:04:05 +08:00
Documentation Pin control fixes for v4.12: 2017-05-29 10:05:19 -07:00
drivers TTY fix for 4.12-rc4 2017-06-04 11:41:41 -07:00
firmware
fs fs/ufs: Set UFS default maximum bytes per file 2017-06-04 16:33:54 -07:00
include Fixes for 4.12-rc 2017-06-04 10:41:32 -07:00
init
ipc
kernel Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching 2017-06-02 08:59:17 -07:00
lib test_bpf: Add a couple of tests for BPF_JSGE. 2017-05-25 14:37:56 -04:00
mm mm: consider memblock reservations for deferred memory initialization sizing 2017-06-02 15:07:38 -07:00
net NFS client bugfixes for Linux 4.12 2017-06-04 11:56:53 -07:00
samples
scripts scripts/gdb: make lx-dmesg command work (reliably) 2017-06-02 15:07:38 -07:00
security
sound sound fixes for 4.12-rc4 2017-06-02 09:40:47 -07:00
tools tools/lib/lockdep: Don't mix fd-based and stream IO 2017-06-05 09:28:08 +02:00
usr initramfs: fix disabling of initramfs (and its compression) 2017-06-02 15:07:37 -07:00
virt KVM: arm/arm64: Hold slots_lock when unregistering kvm io bus devices 2017-05-18 11:18:16 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap power supply and reset changes for the v4.12 series (part 2) 2017-05-12 12:02:21 -07:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: Update email for Sasha Levin 2017-06-05 09:28:07 +02:00
Makefile Linux 4.12-rc4 2017-06-04 16:47:43 -07:00
README

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.