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Message-ID: <20180920065421.GA27173@shao2-debian>
Date: Thu, 20 Sep 2018 14:54:21 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: "Levin, Alexander (Sasha Levin)" <alexander.levin@...izon.com>
Cc: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
LKP <lkp@...org>
Subject: [LKP] cde50a6739 [16.916169] WARNING: bad unlock balance detected!
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit cde50a67397c0da7d11795d4b4418384022ab8e6
Author: Levin, Alexander (Sasha Levin) <alexander.levin@...izon.com>
AuthorDate: Sun Jun 18 14:06:01 2017 +0000
Commit: Ingo Molnar <mingo@...nel.org>
CommitDate: Tue Jun 20 11:53:09 2017 +0200
locking/rtmutex: Don't initialize lockdep when not required
pi_mutex isn't supposed to be tracked by lockdep, but just
passing NULLs for name and key will cause lockdep to spew a
warning and die, which is not what we want it to do.
Skip lockdep initialization if the caller passed NULLs for
name and key, suggesting such initialization isn't desired.
Signed-off-by: Sasha Levin <alexander.levin@...izon.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Fixes: f5694788ad8d ("rt_mutex: Add lockdep annotations")
Link: http://lkml.kernel.org/r/20170618140548.4763-1-alexander.levin@verizon.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
018956d641 locking/selftest: Add RT-mutex support
cde50a6739 locking/rtmutex: Don't initialize lockdep when not required
5b945fd2c3 Merge tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
f8dcd02792 Add linux-next specific files for 20180913
+------------------------------------------------------------------+------------+------------+------------+---------------+
| | 018956d641 | cde50a6739 | 5b945fd2c3 | next-20180913 |
+------------------------------------------------------------------+------------+------------+------------+---------------+
| boot_successes | 900 | 488 | 309 | 320 |
| boot_failures | 10 | 84 | 0 | 2 |
| WARNING:at_kernel/locking/lockdep.c:#lockdep_init_map | 8 | | | |
| EIP:lockdep_init_map | 8 | | | |
| INFO:rcu_preempt_detected_stalls_on_CPUs/tasks | 1 | | | |
| BUG:kernel_hang_in_test_stage | 1 | | | |
| BUG:kernel_hang_in_boot_stage | 1 | | | |
| WARNING:bad_unlock_balance_detected | 0 | 79 | | |
| is_trying_to_release_lock(rcu_preempt_state)at | 0 | 79 | | |
| WARNING:at_arch/x86/include/asm/fpu/internal.h:#fpu__restore | 0 | 2 | | |
| EIP:fpu__restore | 0 | 2 | | |
| invoked_oom-killer:gfp_mask=0x | 0 | 2 | 0 | 2 |
| Mem-Info | 0 | 7 | 0 | 2 |
| EIP:__copy_user_ll | 0 | 1 | 0 | 2 |
| EIP:__put_user_4 | 0 | 1 | | |
| Out_of_memory:Kill_process | 0 | 1 | 0 | 2 |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 0 | 1 | | |
| calltrace:SyS_setpriority | 0 | 8 | | |
| WARNING:at_drivers/pci/pci-sysfs.c:#pci_mmap_resource | 0 | 2 | | |
| EIP:pci_mmap_resource | 0 | 2 | | |
| calltrace:SyS_kill | 0 | 1 | | |
| EIP:strncpy_from_user | 0 | 1 | | |
| Out_of_memory_and_no_killable_processes | 0 | 0 | 0 | 2 |
| Kernel_panic-not_syncing:System_is_deadlocked_on_memory | 0 | 0 | 0 | 2 |
+------------------------------------------------------------------+------------+------------+------------+---------------+
/etc/rcS.d/S00fbsetup: line 3: /sbin/modprobe: No such file or directory
Starting udev
/etc/rcS.d/S03udev: line 72: /proc/sys/kernel/hotplug: No such file or directory
[ 16.911383]
[ 16.915139] =====================================
[ 16.916169] WARNING: bad unlock balance detected!
[ 16.917205] 4.12.0-rc4-00028-gcde50a6 #28 Not tainted
[ 16.918273] -------------------------------------
[ 16.919311] udevd/356 is trying to release lock (rcu_preempt_state) at:
[ 16.920697] [<c10d79d8>] rcu_read_unlock_special+0x348/0x360
[ 16.921890] but there are no more locks to release!
[ 16.923010]
[ 16.923010] other info that might help us debug this:
[ 16.924549] 1 lock held by udevd/356:
[ 16.938455] #0: (rcu_read_lock){......}, at: [<c1072bef>] SyS_setpriority+0x2f/0x470
[ 16.940232]
[ 16.940232] stack backtrace:
[ 16.941469] CPU: 0 PID: 356 Comm: udevd Not tainted 4.12.0-rc4-00028-gcde50a6 #28
[ 16.943148] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 16.944986] Call Trace:
[ 16.945685] dump_stack+0x7d/0xb2
[ 16.946490] ? rcu_read_unlock_special+0x348/0x360
[ 16.947525] print_unlock_imbalance_bug+0xe5/0xf0
[ 16.948555] ? rcu_read_unlock_special+0x348/0x360
[ 16.949595] ? rcu_read_unlock_special+0x348/0x360
[ 16.950656] ? rcu_read_unlock_special+0x348/0x360
[ 16.951690] lock_release+0x17c/0x3e0
[ 16.965655] ? swake_up+0x39/0x50
[ 16.966566] rt_mutex_unlock+0x2f/0xa0
[ 16.967477] rcu_read_unlock_special+0x348/0x360
[ 16.968533] ? preempt_schedule_common+0x1c/0x30
[ 16.969620] __rcu_read_unlock+0x67/0x70
[ 16.970588] SyS_setpriority+0x27c/0x470
[ 16.971552] ? SyS_setpriority+0x2f/0x470
[ 16.972533] ? SyS_rt_sigprocmask+0xc6/0xf0
[ 16.973550] do_int80_syscall_32+0x61/0x140
[ 16.974558] entry_INT80_32+0x36/0x36
[ 16.975454] EIP: 0x47f3e3e4
[ 16.976223] EFLAGS: 00000202 CPU: 0
[ 16.977085] EAX: ffffffda EBX: 00000000 ECX: 00000000 EDX: 00000000
[ 16.991464] ESI: 08069008 EDI: 00000004 EBP: 08081fa0 ESP: bff6c548
[ 16.992831] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[ 17.325200] blk_update_request: I/O error, dev fd0, sector 0
[ 17.326376] floppy: error -5 while reading block 0
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start v4.13 v4.12 --
git bisect bad 63a86362130f4c17eaa57f3ef5171ec43111a54e # 07:47 B 11 1 0 0 Merge tag 'pm-4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
git bisect bad 090a81d8766e21d33ab3e4d24e6c8e5eedf086dd # 08:05 B 100 2 0 0 Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
git bisect bad 3bad2f1c676581d01e7645eb03e9b27e28b0a92e # 08:23 B 106 1 2 2 Merge branch 'work.misc-set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
git bisect bad 362f6729cbb1d6bbab59e069f19441b0622ff7ec # 08:47 B 77 1 0 0 Merge tag 'usb-4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
git bisect bad 6553698be05983056f5561cef6aaee0cc6afe7a0 # 09:13 B 86 1 1 1 Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect bad 892ad5acca0b2ddb514fae63fa4686bf726d2471 # 09:41 B 75 1 0 0 Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 26d3a77d2cb3cb31bbaa2de37b7a4e6375f204ee # 10:10 G 310 0 1 1 Merge tag 'edac_for_4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
git bisect good 330e9e46253cbfab178450c976aa90ef0f3ae940 # 10:40 G 301 0 1 1 Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 162b246eb420d2ca2002a50917c897b10c9aba09 # 11:06 G 300 0 0 0 Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 12d83f7361724e5aa4299bb28e4caadc62ae482b # 11:49 G 305 0 0 81 tools/include: Add (mostly) empty include/linux/sched/mm.h
git bisect good 3942b77121986519ee52ab4dd4ae8f4383dfe765 # 12:14 G 309 0 0 74 MAINTAINERS: Claim atomic*_t maintainership
git bisect bad cde50a67397c0da7d11795d4b4418384022ab8e6 # 12:20 B 11 1 0 21 locking/rtmutex: Don't initialize lockdep when not required
git bisect good cfb6133399a490419cda55fcdcf9dbbca65eacba # 12:54 G 303 0 4 167 locking/selftest: Remove the bad unlock ordering test
git bisect good 018956d6419be3e5ff5aacc60b2a3cff585adee1 # 13:15 G 310 0 0 0 locking/selftest: Add RT-mutex support
# first bad commit: [cde50a67397c0da7d11795d4b4418384022ab8e6] locking/rtmutex: Don't initialize lockdep when not required
git bisect good 018956d6419be3e5ff5aacc60b2a3cff585adee1 # 13:45 G 909 0 9 9 locking/selftest: Add RT-mutex support
# extra tests with debug options
git bisect bad cde50a67397c0da7d11795d4b4418384022ab8e6 # 13:54 B 40 2 0 0 locking/rtmutex: Don't initialize lockdep when not required
# extra tests on HEAD of internal-chrome-os/chromeos-4.14
git bisect bad 398e4407ff49740beb32f7e4b062a1eea57d9487 # 13:54 B 73 2 0 4 CHROMIUM: arm64: dts: qcom: Switch edp regulator to load switch
# extra tests on tree/branch linus/master
git bisect good 5b945fd2c34c6324752fc793266b4598a307d765 # 14:22 G 306 0 5 5 Merge tag 'trace-v4.19-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
# extra tests with first bad commit reverted
git bisect good c4ed1913cb01110119247ed7b1a098626a954418 # 14:48 G 304 0 305 305 Revert "locking/rtmutex: Don't initialize lockdep when not required"
# extra tests on tree/branch linux-next/master
git bisect good f8dcd02792146c5047419ff4c856651acd04f7c6 # 15:13 G 310 0 0 2 Add linux-next specific files for 20180913
---
0-DAY kernel test infrastructure Open Source Technology Center
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