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Date: Sat, 27 Jun 2015 14:27:33 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Andy Lutomirski <luto@...nel.org>
Cc: fengguang.wu@...el.com, linux-kernel@...r.kernel.org,
LKP <lkp@...org>
Subject: [x86/entry/64] WARNING: CPU: 1 PID: 1 at
kernel/locking/lockdep.c:3561 check_flags()
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/entry
commit e9c469cb57d2ccf6e7e5e8e6f869fc579adb58e8
Author: Andy Lutomirski <luto@...nel.org>
AuthorDate: Tue Jun 16 12:16:30 2015 -0700
Commit: Andy Lutomirski <luto@...nel.org>
CommitDate: Thu Jun 25 16:50:46 2015 -0700
x86/entry/64: Migrate 64-bit and compat syscalls to new exit hooks
These need to be migrated together, as the compat case used to jump
into the middle of the 64-bit exit code.
Signed-off-by: Andy Lutomirski <luto@...nel.org>
+----------------------------------------------------+------------+------------+------------+
| | 3854ea665f | e9c469cb57 | eafee44a99 |
+----------------------------------------------------+------------+------------+------------+
| boot_successes | 63 | 0 | 0 |
| boot_failures | 0 | 24 | 24 |
| WARNING:at_kernel/locking/lockdep.c:#check_flags() | 0 | 24 | 24 |
| backtrace:__task_pid_nr_ns | 0 | 22 | 8 |
| backtrace:SyS_set_tid_address | 0 | 22 | 8 |
| backtrace:vm_mmap_pgoff | 0 | 2 | |
| backtrace:SyS_mmap_pgoff | 0 | 2 | |
| backtrace:SyS_mmap | 0 | 2 | |
| IP-Config:Auto-configuration_of_network_failed | 0 | 2 | |
| backtrace:vfs_read | 0 | 0 | 3 |
| backtrace:SyS_read | 0 | 0 | 3 |
| backtrace:__close_fd | 0 | 0 | 13 |
| backtrace:SyS_close | 0 | 0 | 13 |
+----------------------------------------------------+------------+------------+------------+
[ 11.004006] Freeing unused kernel memory: 1200K (ffff88000b4d4000 - ffff88000b600000)
[ 11.006656] Freeing unused kernel memory: 1360K (ffff88000bcac000 - ffff88000be00000)
[ 11.010492] ------------[ cut here ]------------
[ 11.011035] WARNING: CPU: 1 PID: 1 at kernel/locking/lockdep.c:3561 check_flags+0x2f6/0x330()
[ 11.011035] DEBUG_LOCKS_WARN_ON(!current->hardirqs_enabled)
[ 11.011035] CPU: 1 PID: 1 Comm: init Not tainted 4.1.0-01336-ge9c469c #1
[ 11.011035] ffffffff8bb7f2e0 ffff880010d0fdd8 ffffffff8b4a70ee 000000000000002f
[ 11.011035] ffff880010d0fe28 ffff880010d0fe18 ffffffff8a8ac643 ffff8800100dc120
[ 11.011035] 0000000000000202 0000000000000000 0000000000000000 0000000000000000
[ 11.011035] Call Trace:
[ 11.011035] [<ffffffff8b4a70ee>] dump_stack+0x84/0xb9
[ 11.011035] [<ffffffff8a8ac643>] warn_slowpath_common+0xa3/0x100
[ 11.011035] [<ffffffff8a8ac731>] warn_slowpath_fmt+0x51/0x60
[ 11.011035] [<ffffffff8a91af46>] check_flags+0x2f6/0x330
[ 11.011035] [<ffffffff8a920991>] lock_acquire+0xb1/0x1a0
[ 11.011035] [<ffffffff8a8dd8ee>] ? task_work_run+0x12e/0x160
[ 11.011035] [<ffffffff8a8dd30f>] __task_pid_nr_ns+0x5f/0x290
[ 11.011035] [<ffffffff8a8dd2b0>] ? pid_vnr+0x80/0x80
[ 11.011035] [<ffffffff8a8ab09e>] SyS_set_tid_address+0x2e/0x40
[ 11.011035] [<ffffffff8b4b99f6>] entry_SYSCALL_64_fastpath+0x16/0x7a
[ 11.011035] ---[ end trace 3806fbdbe2666144 ]---
[ 11.011035] possible reason: unannotated irqs-on.
git bisect start eafee44a99f220b651d8f2e3ef1cf617f7a178be b953c0d234bc72e8489d3bf51a276c5c4ec85345 --
git bisect bad 50d4f70d4e503816c7e593c7f7ed1c09cc98a615 # 00:23 0- 22 Merge 'btrfs/integration-4.2' into devel-spot-201506261220
git bisect good 22fdb85178ce6d40c43c419df08c7b22c9e0cef1 # 00:37 22+ 2 Merge 'pm/bleeding-edge' into devel-spot-201506261220
git bisect bad f378713e98927057d534780b238f1045f8c80a83 # 00:43 0- 22 Merge 'luto/x86/entry' into devel-spot-201506261220
git bisect good 7ae9481f6b73ee3a1afcc9d8ff0394b629171a4a # 01:02 22+ 0 Merge 'ukl/gpiod' into devel-spot-201506261220
git bisect good 3a3c8160aa4072046489cebe9623e1096ad85553 # 01:09 22+ 0 Merge 'perf/tmp.perf/pt' into devel-spot-201506261220
git bisect good 3854ea665fc3b5cdae745f1c9ca30422556cfdf9 # 01:34 22+ 0 x86/entry/64: Really create an error-entry-from-usermode code path
git bisect bad 97c83f17b5d877a6ecdc52cf8c486ce167c1f4ef # 02:04 0- 22 x86/entry: Remove exception_enter from most trap handlers
git bisect bad c0b6e6a29945abf362aff2fc607e1623fc3eb124 # 02:36 0- 24 x86/asm/entry/64: Save all regs on interrupt entry
git bisect bad e9c469cb57d2ccf6e7e5e8e6f869fc579adb58e8 # 02:43 0- 24 x86/entry/64: Migrate 64-bit and compat syscalls to new exit hooks
# first bad commit: [e9c469cb57d2ccf6e7e5e8e6f869fc579adb58e8] x86/entry/64: Migrate 64-bit and compat syscalls to new exit hooks
git bisect good 3854ea665fc3b5cdae745f1c9ca30422556cfdf9 # 02:46 63+ 0 x86/entry/64: Really create an error-entry-from-usermode code path
# extra tests with DEBUG_INFO
git bisect bad e9c469cb57d2ccf6e7e5e8e6f869fc579adb58e8 # 02:55 0- 7 x86/entry/64: Migrate 64-bit and compat syscalls to new exit hooks
# extra tests on HEAD of linux-devel/devel-spot-201506261220
git bisect bad eafee44a99f220b651d8f2e3ef1cf617f7a178be # 02:55 0- 24 0day head guard for 'devel-spot-201506261220'
# extra tests on tree/branch luto/x86/entry
git bisect good d5a2db8b9358cfeb7e0688ea391185fd2b1cdc05 # 03:07 66+ 0 x86/entry: Remove do_notify_resume, syscall_trace_leave, and their TIF masks
# extra tests on tree/branch linus/master
git bisect good c13c81006314ad76c2b31824960a900385601b8b # 03:52 61+ 2 Merge tag 'rtc-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
# extra tests on tree/branch next/master
git bisect good 043831b4a4e9a981c4ec6331b6d64b9f62285d5d # 04:47 60+ 0 Add linux-next specific files for 20150626
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=quantal-core-x86_64.cgz
wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu kvm64
-kernel $kernel
-initrd $initrd
-m 300
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
systemd.log_level=err
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
View attachment "dmesg-quantal-ivb42-116:20150627024006:x86_64-randconfig-h0-06261249:4.1.0-01336-ge9c469c:1" of type "text/plain" (315158 bytes)
View attachment "config-4.1.0-01336-ge9c469c" of type "text/plain" (93000 bytes)
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