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Date: Wed, 06 Jan 2016 09:48:54 +0800
From: kernel test robot <ying.huang@...ux.intel.com>
TO: Aditya Kali <adityakali@...gle.com>
CC: Serge Hallyn <serge.hallyn@...ntu.com>
Subject: [lkp] [cgroup] 6adb73eff2: BUG: sleeping function called from
invalid context at kernel/locking/mutex.c:97
FYI, we noticed the below changes on
https://git.kernel.org/pub/scm/linux/kernel/git/sergeh/linux-security cgroupns.v9
commit 6adb73eff28e2ae9876bc5bce4e4ec7d15bab537 ("cgroup: introduce cgroup namespaces")
+-----------------------------------------------------------------------------+------------+------------+
| | f2a74e2f95 | 6adb73eff2 |
+-----------------------------------------------------------------------------+------------+------------+
| boot_successes | 8 | 4 |
| boot_failures | 0 | 4 |
| BUG:sleeping_function_called_from_invalid_context_at_kernel/locking/mutex.c | 0 | 4 |
| WARNING:at_kernel/softirq.c:#__local_bh_enable_ip() | 0 | 4 |
| backtrace:vfs_read | 0 | 4 |
| backtrace:SyS_read | 0 | 4 |
+-----------------------------------------------------------------------------+------------+------------+
[ 23.823700] systemd-journald[1771]: Vacuuming done, freed 0 bytes
LKP: HOSTNAME vm-kbuild-2G-8, MAC 52:54:00:12:34:56, kernel 4.4.0-rc1-00024-g6adb73e 1, serial console /dev/ttyS0
[ 32.251978] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:97
[ 32.253721] in_atomic(): 1, irqs_disabled(): 1, pid: 2642, name: cat
[ 32.255555] CPU: 0 PID: 2642 Comm: cat Not tainted 4.4.0-rc1-00024-g6adb73e #1
[ 32.271987] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 32.293786] 0000000000000000 ffff88007efcbc30 ffffffff814bec06 ffffffff81ec2c6f
[ 32.296552] ffff88007efcbc40 ffffffff8111b4ed ffff88007efcbc68 ffffffff8111b58e
[ 32.307644] ffffffff82266330 ffffffff822662a0 0000000000000000 ffff88007efcbc80
[ 32.340424] Call Trace:
[ 32.345652] [<ffffffff814bec06>] dump_stack+0x4b/0x63
[ 32.347428] [<ffffffff8111b4ed>] ___might_sleep+0x133/0x135
[ 32.349358] [<ffffffff8111b58e>] __might_sleep+0x9f/0xa6
[ 32.359114] [<ffffffff81a5192b>] mutex_lock+0x20/0x42
[ 32.360762] [<ffffffff8116d714>] cgroup_path_ns+0x2a/0x72
[ 32.370694] [<ffffffff81131a64>] task_group_path+0x31/0x33
[ 32.372667] [<ffffffff8113227d>] print_cfs_rq+0x52/0x7d9
[ 32.374494] [<ffffffff8112c44a>] print_cfs_stats+0x6d/0x8f
[ 32.376061] [<ffffffff81131ead>] print_cpu+0x447/0x7a3
[ 32.377525] [<ffffffff81131776>] ? sched_debug_header+0x2c8/0x4e1
[ 32.379402] [<ffffffff81132220>] sched_debug_show+0x17/0x22
[ 32.381049] [<ffffffff81239fa2>] seq_read+0x252/0x337
[ 32.382636] [<ffffffff81276198>] proc_reg_read+0x48/0x67
[ 32.384256] [<ffffffff81276150>] ? proc_reg_write+0x67/0x67
[ 32.386007] [<ffffffff8121c5b0>] __vfs_read+0x26/0xb0
[ 32.387636] [<ffffffff81082763>] ? __do_page_fault+0x3a5/0x41f
[ 32.389352] [<ffffffff8121cc53>] vfs_read+0x98/0x123
[ 32.390782] [<ffffffff8121d778>] SyS_read+0x4e/0x89
[ 32.392136] [<ffffffff81a53872>] entry_SYSCALL_64_fastpath+0x12/0x71
[ 32.393861] ------------[ cut here ]------------
[ 32.395321] WARNING: CPU: 0 PID: 2642 at kernel/softirq.c:150 __local_bh_enable_ip+0x45/0xb4()
[ 32.399495] Modules linked in: acpi_cpufreq
[ 32.401129] CPU: 0 PID: 2642 Comm: cat Not tainted 4.4.0-rc1-00024-g6adb73e #1
[ 32.403887] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 32.407054] 0000000000000000 ffff88007efcbc08 ffffffff814bec06 0000000000000000
[ 32.410215] ffff88007efcbc40 ffffffff810fabbd ffffffff810fec1b 0000000000000201
[ 32.413558] ffffffff8116d745 0000000000000000 0000000000000000 ffff88007efcbc50
[ 32.416393] Call Trace:
[ 32.417475] [<ffffffff814bec06>] dump_stack+0x4b/0x63
[ 32.418930] [<ffffffff810fabbd>] warn_slowpath_common+0x9f/0xb8
[ 32.420502] [<ffffffff810fec1b>] ? __local_bh_enable_ip+0x45/0xb4
[ 32.422131] [<ffffffff8116d745>] ? cgroup_path_ns+0x5b/0x72
[ 32.423642] [<ffffffff810fac89>] warn_slowpath_null+0x1a/0x1c
[ 32.425210] [<ffffffff810fec1b>] __local_bh_enable_ip+0x45/0xb4
[ 32.426824] [<ffffffff81a53234>] _raw_spin_unlock_bh+0x1a/0x1c
[ 32.428614] [<ffffffff8116d745>] cgroup_path_ns+0x5b/0x72
[ 32.430200] [<ffffffff81131a64>] task_group_path+0x31/0x33
[ 32.432014] [<ffffffff8113227d>] print_cfs_rq+0x52/0x7d9
[ 32.433806] [<ffffffff8112c44a>] print_cfs_stats+0x6d/0x8f
[ 32.435586] [<ffffffff81131ead>] print_cpu+0x447/0x7a3
[ 32.438569] [<ffffffff81131776>] ? sched_debug_header+0x2c8/0x4e1
[ 32.441797] [<ffffffff81132220>] sched_debug_show+0x17/0x22
[ 32.443660] [<ffffffff81239fa2>] seq_read+0x252/0x337
[ 32.448305] [<ffffffff81276198>] proc_reg_read+0x48/0x67
[ 32.454036] [<ffffffff81276150>] ? proc_reg_write+0x67/0x67
[ 32.455716] [<ffffffff8121c5b0>] __vfs_read+0x26/0xb0
[ 32.465920] [<ffffffff81082763>] ? __do_page_fault+0x3a5/0x41f
[ 32.467854] [<ffffffff8121cc53>] vfs_read+0x98/0x123
[ 32.477553] [<ffffffff8121d778>] SyS_read+0x4e/0x89
[ 32.479155] [<ffffffff81a53872>] entry_SYSCALL_64_fastpath+0x12/0x71
[ 32.480923] ---[ end trace e8da3a8fb61be5a1 ]---
[ 32.480923] ---[ end trace e8da3a8fb61be5a1 ]---
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Kernel Test Robot
View attachment "config-4.4.0-rc1-00024-g6adb73e" of type "text/plain" (91057 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (14116 bytes)
View attachment "job.yaml" of type "text/plain" (3160 bytes)
Download attachment "reproduce.sh" of type "application/x-sh" (36 bytes)
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