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Date: Sat, 27 Jun 2015 05:47:13 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: LKP <lkp@...org>, linux-kernel@...r.kernel.org,
dmaengine@...r.kernel.org, Ulf Hansson <ulf.hansson@...aro.org>,
Vinod Koul <vinod.koul@...el.com>, fengguang.wu@...el.com
Subject: [dmaengine: shdma] RIP: 0010:[<ffffffff8124ad42>]
[<ffffffff8124ad42>] __asan_load8
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit b6d1778bc5485c55c6f5194b8b2ea84c0ce5adad
Author: Geert Uytterhoeven <geert+renesas@...der.be>
AuthorDate: Thu Feb 26 11:26:34 2015 +0100
Commit: Vinod Koul <vinod.koul@...el.com>
CommitDate: Mon Mar 2 22:10:44 2015 +0530
dmaengine: shdma: Move DMA stop to (runtime) suspend callbacks
During system reboot, the sh-dma-engine device may be runtime-suspended,
causing a crash:
Unhandled fault: imprecise external abort (0x1406) at 0x0002c02c
Internal error: : 1406 [#1] SMP ARM
...
PC is at sh_dmae_ctl_stop+0x28/0x64
LR is at sh_dmae_ctl_stop+0x24/0x64
If the sh-dma-engine is runtime-suspended, its module clock is turned
off, and its registers cannot be accessed.
To fix this, move the call to sh_dmae_ctl_stop(), which touches the
DMAOR register, to the sh_dmae_suspend() and sh_dmae_runtime_suspend()
callbacks. This makes PM operations more symmetric, as both
sh_dmae_resume() and sh_dmae_runtime_resume() already call sh_dmae_rst()
to re-initialize the DMAOR register.
Remove sh_dmae_shutdown(), as it became empty.
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Vinod Koul <vinod.koul@...el.com>
+------------------------------------------------+------------+------------+-------------+
| | 3a314f143d | b6d1778bc5 | v4.1_062420 |
+------------------------------------------------+------------+------------+-------------+
| boot_successes | 910 | 257 | 109 |
| boot_failures | 0 | 53 | 14 |
| RIP:__asan_load4 | 0 | 11 | 2 |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 53 | 14 |
| backtrace:insert_augmented | 0 | 24 | 1 |
| backtrace:rbtree_test_init | 0 | 53 | 14 |
| backtrace:kernel_init_freeable | 0 | 53 | 14 |
| RIP:__asan_store4 | 0 | 6 | 1 |
| RIP:__asan_store8 | 0 | 7 | 1 |
| RIP:__asan_load8 | 0 | 20 | 7 |
| backtrace:rb_erase | 0 | 2 | 1 |
| backtrace:insert | 0 | 4 | 5 |
| backtrace:erase_augmented | 0 | 13 | 3 |
| RIP:rb_erase | 0 | 1 | |
| backtrace:apic_timer_interrupt | 0 | 10 | 4 |
| RIP:insert_augmented | 0 | 2 | 1 |
| RIP:augment_callbacks_propagate | 0 | 1 | |
| RIP:__rb_insert_augmented | 0 | 2 | |
| RIP:augment_callbacks_rotate | 0 | 2 | |
| RIP:erase_augmented | 0 | 1 | |
| RIP:insert | 0 | 0 | 1 |
| RIP:rb_insert_color | 0 | 0 | 1 |
+------------------------------------------------+------------+------------+-------------+
[ 33.459464] rbtree testing
[ 60.153413] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [swapper:1]
[ 60.156705] CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc1-00002-gb6d1778 #1
[ 60.156705] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 60.156705] task: ffff880000050000 ti: ffff880000058000 task.ti: ffff880000058000
[ 60.156705] RIP: 0010:[<ffffffff8124ad42>] [<ffffffff8124ad42>] __asan_load8+0x22/0x140
[ 60.156705] RSP: 0000:ffff88000005fd78 EFLAGS: 00000206
[ 60.156705] RAX: ffff7fffffffffff RBX: dffffc0000000000 RCX: dffffc0000000000
[ 60.156705] RDX: 000000003a16a0ad RSI: 0000000000000008 RDI: ffffffff835259f8
[ 60.156705] RBP: ffff88000005fda8 R08: fffffbfff06a4ba4 R09: ffffffff83525d27
[ 60.156705] R10: 0000000000786df2 R11: 0000000000786d49 R12: fffffbfff06a4a22
[ 60.156705] R13: ffffffff83525117 R14: 0000000001e5366b R15: 0000000001e527ac
[ 60.156705] FS: 0000000000000000(0000) GS:ffffffff8225b000(0000) knlGS:0000000000000000
[ 60.156705] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 60.156705] CR2: 0000000000000000 CR3: 0000000002237000 CR4: 00000000000006b0
[ 60.156705] Stack:
[ 60.156705] ffff88000005fdd8 ffffffff813f34e3 ffffffff835259f8 ffffffff83525d18
[ 60.156705] ffffffff83525cc8 ffffffff83525d18 ffff88000005fe18 ffffffff813f4225
[ 60.156705] ffffffff83525e40 ffffffff83525ea0 ffffffff83525cc8 0000000000804f8b
[ 60.156705] Call Trace:
[ 60.156705] [<ffffffff813f34e3>] ? rb_insert_color+0x53/0x600
[ 60.156705] [<ffffffff813f4225>] rb_erase+0x795/0xbe0
[ 60.156705] [<ffffffff8283f234>] ? err_inject_init+0x3f/0x3f
[ 60.156705] [<ffffffff8283f2f6>] rbtree_test_init+0xc2/0x32c
[ 60.156705] [<ffffffff828089ff>] do_one_initcall+0x19d/0x2a0
[ 60.156705] [<ffffffff82808eb6>] kernel_init_freeable+0x3b4/0x4bd
[ 60.156705] [<ffffffff81d1dbe0>] ? rest_init+0x140/0x140
[ 60.156705] [<ffffffff81d1dbf6>] kernel_init+0x16/0x1b0
[ 60.156705] [<ffffffff8111b1ac>] ? schedule_tail+0x4c/0xc0
[ 60.156705] [<ffffffff81d1dbe0>] ? rest_init+0x140/0x140
[ 60.156705] [<ffffffff81d3a63a>] ret_from_fork+0x7a/0xb0
[ 60.156705] [<ffffffff81d1dbe0>] ? rest_init+0x140/0x140
[ 60.156705] Code: 07 38 ca 7e c2 eb 98 66 90 55 48 b8 ff ff ff ff ff 7f ff ff 48 89 e5 48 83 ec 30 48 83 05 46 73 24 02 01 48 83 05 9e 6d 24 02 01 <48> 39 c7 76 49 48 8b 15 8a 6d 24 02 48 b9 00 00 00 00 00 fc ff
[ 60.156705] Kernel panic - not syncing: softlockup: hung tasks
[ 60.156705] CPU: 0 PID: 1 Comm: swapper Tainted: G L 4.0.0-rc1-00002-gb6d1778 #1
[ 60.156705] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[ 60.156705] 00000000ee6b2800 ffffffff82262e28 ffffffff81d23f40 ffffffff82262ea8
[ 60.156705] ffffffff81d21bc4 0000000000000003 dffffc0000000008 ffffffff82262eb8
[ 60.156705] ffffffff82262e58 ffffffff82262ea8 0000000000000000 0000000000000000
[ 60.156705] Call Trace:
[ 60.156705] <IRQ> [<ffffffff81d23f40>] dump_stack+0x2e/0x3e
[ 60.156705] [<ffffffff81d21bc4>] panic+0x128/0x2db
[ 60.156705] [<ffffffff811a59d6>] watchdog_timer_fn+0x2a6/0x2b0
[ 60.156705] [<ffffffff811a5730>] ? watchdog+0x40/0x40
[ 60.156705] [<ffffffff8115b6b4>] __run_hrtimer+0x84/0x1a0
[ 60.156705] [<ffffffff8115c4b7>] hrtimer_interrupt+0x137/0x330
[ 60.156705] [<ffffffff81047c39>] local_apic_timer_interrupt+0x29/0x70
[ 60.156705] [<ffffffff81048290>] smp_apic_timer_interrupt+0x80/0xb0
[ 60.156705] [<ffffffff81d3b45b>] apic_timer_interrupt+0x6b/0x70
[ 60.156705] <EOI> [<ffffffff8124ad42>] ? __asan_load8+0x22/0x140
[ 60.156705] [<ffffffff813f34e3>] ? rb_insert_color+0x53/0x600
[ 60.156705] [<ffffffff813f4225>] rb_erase+0x795/0xbe0
[ 60.156705] [<ffffffff8283f234>] ? err_inject_init+0x3f/0x3f
[ 60.156705] [<ffffffff8283f2f6>] rbtree_test_init+0xc2/0x32c
[ 60.156705] [<ffffffff828089ff>] do_one_initcall+0x19d/0x2a0
[ 60.156705] [<ffffffff82808eb6>] kernel_init_freeable+0x3b4/0x4bd
[ 60.156705] [<ffffffff81d1dbe0>] ? rest_init+0x140/0x140
[ 60.156705] [<ffffffff81d1dbf6>] kernel_init+0x16/0x1b0
[ 60.156705] [<ffffffff8111b1ac>] ? schedule_tail+0x4c/0xc0
[ 60.156705] [<ffffffff81d1dbe0>] ? rest_init+0x140/0x140
[ 60.156705] [<ffffffff81d3a63a>] ret_from_fork+0x7a/0xb0
[ 60.156705] [<ffffffff81d1dbe0>] ? rest_init+0x140/0x140
[ 60.156705] Kernel Offset: disabled
Elapsed time: 80
git bisect start v4.0 v2.6.39 --
git bisect good 5abcd76f5d896de014bd8d1486107c483659d40d # 22:45 310+ 930 Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 6a4d07f85ba9da5b6eab6e60a493d459c4296176 # 22:50 309+ 663 Merge branch 'for-3.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
git bisect good 9f47112975fdc32e545e079f42a17bbd0be236fc # 22:50 310+ 0 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
git bisect good d9b9692af590a4174b9d3cb4ab20e006cc471d31 # 23:50 310+ 1 Merge tag 'spi-v3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
git bisect good 298e320431db1db52b9ddd6f242bb33a4ea2d094 # 00:13 305+ 0 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
git bisect good 3d883483dc0a7261d73d8b1857a7387a1dd99eee # 00:22 310+ 0 Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
git bisect bad 1ee89c519a0aca101d2e173c5544a52877d763ec # 01:15 1- 2 Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
git bisect good 97754e3c5ae814a308c5ddfb08f8d2dc3dcb1b47 # 01:28 308+ 0 Merge tag 'powerpc-4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
git bisect bad d08edd8f09a0bc7f28c9559d134ffc37ff264962 # 01:43 0- 1 Merge tag 'spi-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
git bisect good 9aae0df6a3cb6fbbfe30b1649644a862632fbfdd # 02:50 303+ 0 Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
git bisect bad 1163d504ae69b5e83ab16900f6a96e30bd78bda5 # 03:08 54- 24 Merge tag 'usb-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
git bisect bad b0bc65729070b9cbdbb53ff042984a3c545a0e34 # 03:20 7- 10 Merge tag 'cc-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
git bisect bad 374dab2366c64666612b8f6275f8c373a373b8d0 # 03:30 0- 2 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
git bisect bad 6eb9d3c1e9c5977f7fe6be125006443e7da2427c # 03:37 0- 2 dmaengine: at_xdmac: fix for chan conf simplification
git bisect bad b6d1778bc5485c55c6f5194b8b2ea84c0ce5adad # 03:48 4- 7 dmaengine: shdma: Move DMA stop to (runtime) suspend callbacks
git bisect good 3a314f143d82603bd697d7eb6c76518afc3595bc # 04:11 310+ 0 dmaenegine: mmp-pdma: fix irq handler overwrite physical chan issue
# first bad commit: [b6d1778bc5485c55c6f5194b8b2ea84c0ce5adad] dmaengine: shdma: Move DMA stop to (runtime) suspend callbacks
git bisect good 3a314f143d82603bd697d7eb6c76518afc3595bc # 04:22 910+ 0 dmaenegine: mmp-pdma: fix irq handler overwrite physical chan issue
# extra tests with DEBUG_INFO
git bisect bad b6d1778bc5485c55c6f5194b8b2ea84c0ce5adad # 04:33 90- 1 dmaengine: shdma: Move DMA stop to (runtime) suspend callbacks
# extra tests on HEAD of linux-devel/devel-hourly-2015062420
git bisect bad af42cc265718e8a1153b620d762f5d7484f70bcd # 04:33 0- 14 0day head guard for 'devel-hourly-2015062420'
# extra tests on tree/branch linus/master
git bisect bad 22165fa79814e71e7a5974b3c37a5028ed16c8f9 # 04:46 81- 7 Merge tag 'dm-4.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
# extra tests with first bad commit reverted
git bisect bad 069de26028038928617476306457a2473b519ede # 05:10 434- 10 Revert "dmaengine: shdma: Move DMA stop to (runtime) suspend callbacks"
# extra tests on tree/branch linus/master
git bisect bad 099bfbfc7fbbe22356c02f0caf709ac32e1126ea # 05:40 100- 13 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
# extra tests on tree/branch next/master
git bisect bad 043831b4a4e9a981c4ec6331b6d64b9f62285d5d # 05:46 3- 4 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-intel12-19:20150627035321:x86_64-randconfig-s0-06242345:4.0.0-rc1-00002-gb6d1778:1" of type "text/plain" (35247 bytes)
View attachment "config-4.0.0-rc1-00002-gb6d1778" of type "text/plain" (61446 bytes)
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