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Date: Tue, 11 Dec 2018 17:12:42 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: David Howells <dhowells@...hat.com>
Cc: Al Viro <viro@...iv.linux.org.uk>,
LKML <linux-kernel@...r.kernel.org>,
linux-fsdevel@...r.kernel.org, lkp@...org
Subject: [LKP] [btrfs] f5c9b46c08: BUG:soft_lockup-CPU##stuck_for#s
FYI, we noticed the following commit (built with gcc-7):
commit: f5c9b46c08fe18a5cd66c52e8e07c49476376d74 ("btrfs: Convert to using fs_context")
https://git.kernel.org/cgit/linux/kernel/git/viro/vfs.git Q27
in testcase: xfstests
with following parameters:
disk: 6HDD
fs: btrfs
test: btrfs-group1
test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------------+------------+------------+
| | c49b0d9aad | f5c9b46c08 |
+------------------------------------------------+------------+------------+
| boot_successes | 5 | 10 |
| boot_failures | 4 | 12 |
| End_of_test:RCU_HOTPLUG | 4 | |
| BUG:soft_lockup-CPU##stuck_for#s | 0 | 12 |
| RIP:native_queued_spin_lock_slowpath | 0 | 12 |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 12 |
+------------------------------------------------+------------+------------+
[ 176.538777] watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [kworker/u4:2:152]
[ 176.542675] Modules linked in: btrfs xor zstd_decompress zstd_compress xxhash raid6_pq dm_mod sr_mod cdrom sg ata_generic pata_acpi crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel ppdev aesni_intel crypto_simd cryptd glue_helper snd_pcm snd_timer snd soundcore serio_raw pcspkr ata_piix i2c_piix4 libata parport_pc floppy parport ip_tables
[ 176.547111] CPU: 1 PID: 152 Comm: kworker/u4:2 Not tainted 4.20.0-rc1-00072-gf5c9b46 #1
[ 176.548379] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 176.549719] Workqueue: btrfs-delalloc btrfs_delalloc_helper [btrfs]
[ 176.550666] RIP: 0010:native_queued_spin_lock_slowpath+0x21/0x1a0
[ 176.551581] Code: 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 66 66 66 66 90 ba 01 00 00 00 8b 07 85 c0 75 0a f0 0f b1 17 85 c0 75 f2 f3 c3 f3 90 <eb> ec 81 fe 00 01 00 00 74 3e 81 e6 00 ff ff ff 75 56 f0 0f ba 2f
[ 176.554262] RSP: 0000:ffffc900008d7cb0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
[ 176.555479] RAX: 0000000000000001 RBX: ffffffffffffffff RCX: ffffffffa0433fc8
[ 176.556523] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffffa0433fb8
[ 176.557568] RBP: ffffffffa0433fb8 R08: 0000000000000002 R09: ffffc900008d7df0
[ 176.558615] R10: ffffffff82844be0 R11: 0000000000000002 R12: ffffffffa0433fc0
[ 176.559666] R13: ffffffffa0433fa8 R14: 0000000000000002 R15: 0000000000000000
[ 176.560708] FS: 0000000000000000(0000) GS:ffff88013fd00000(0000) knlGS:0000000000000000
[ 176.561983] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 176.562860] CR2: 000055b2ad0f72f0 CR3: 000000007852c000 CR4: 00000000000406e0
[ 176.563907] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 176.564952] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 176.565997] Call Trace:
[ 176.566489] _raw_spin_lock+0x22/0x30
[ 176.567136] __find_workspace+0x9d/0x2c0 [btrfs]
[ 176.567895] ? btrfs_compress_heuristic+0x1b5/0x560 [btrfs]
[ 176.568759] ? page_mkclean+0x6e/0xc0
[ 176.569387] ? page_referenced_one+0x1a0/0x1a0
[ 176.570126] btrfs_compress_pages+0x38/0xa0 [btrfs]
[ 176.570913] compress_file_range+0x201/0x7b0 [btrfs]
[ 176.571843] ? submit_compressed_extents+0x4e0/0x4e0 [btrfs]
[ 176.572720] async_cow_start+0x43/0x80 [btrfs]
[ 176.573453] normal_work_helper+0x79/0x350 [btrfs]
[ 176.574222] ? __schedule+0x268/0x8a0
[ 176.574850] process_one_work+0x1ae/0x3d0
[ 176.575518] worker_thread+0x3c/0x3b0
[ 176.576148] ? process_one_work+0x3d0/0x3d0
[ 176.576842] kthread+0x11e/0x140
[ 176.577417] ? kthread_park+0x90/0x90
[ 176.578046] ret_from_fork+0x35/0x40
[ 176.578667] Kernel panic - not syncing: softlockup: hung tasks
[ 176.579551] CPU: 1 PID: 152 Comm: kworker/u4:2 Tainted: G L 4.20.0-rc1-00072-gf5c9b46 #1
[ 176.580989] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 176.582310] Workqueue: btrfs-delalloc btrfs_delalloc_helper [btrfs]
[ 176.583240] Call Trace:
[ 176.583709] <IRQ>
[ 176.584124] dump_stack+0x5c/0x7b
[ 176.584696] panic+0xfe/0x262
[ 176.585222] ? ret_from_fork+0x21/0x40
[ 176.585841] ? ret_from_fork+0x1a/0x40
[ 176.586457] watchdog_timer_fn+0x256/0x260
[ 176.587143] ? softlockup_fn+0x40/0x40
[ 176.587784] __hrtimer_run_queues+0x108/0x2b0
[ 176.588465] hrtimer_interrupt+0xe5/0x240
[ 176.589112] smp_apic_timer_interrupt+0x6a/0x150
[ 176.589828] apic_timer_interrupt+0xf/0x20
[ 176.590479] </IRQ>
[ 176.590906] RIP: 0010:native_queued_spin_lock_slowpath+0x21/0x1a0
[ 176.591795] Code: 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 66 66 66 66 90 ba 01 00 00 00 8b 07 85 c0 75 0a f0 0f b1 17 85 c0 75 f2 f3 c3 f3 90 <eb> ec 81 fe 00 01 00 00 74 3e 81 e6 00 ff ff ff 75 56 f0 0f ba 2f
[ 176.594369] RSP: 0000:ffffc900008d7cb0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
[ 176.595568] RAX: 0000000000000001 RBX: ffffffffffffffff RCX: ffffffffa0433fc8
[ 176.596619] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffffa0433fb8
[ 176.597639] RBP: ffffffffa0433fb8 R08: 0000000000000002 R09: ffffc900008d7df0
[ 176.598657] R10: ffffffff82844be0 R11: 0000000000000002 R12: ffffffffa0433fc0
[ 176.599670] R13: ffffffffa0433fa8 R14: 0000000000000002 R15: 0000000000000000
[ 176.600695] _raw_spin_lock+0x22/0x30
[ 176.601317] __find_workspace+0x9d/0x2c0 [btrfs]
[ 176.602052] ? btrfs_compress_heuristic+0x1b5/0x560 [btrfs]
[ 176.602891] ? page_mkclean+0x6e/0xc0
[ 176.603497] ? page_referenced_one+0x1a0/0x1a0
[ 176.604206] btrfs_compress_pages+0x38/0xa0 [btrfs]
[ 176.604967] compress_file_range+0x201/0x7b0 [btrfs]
[ 176.605866] ? submit_compressed_extents+0x4e0/0x4e0 [btrfs]
[ 176.606716] async_cow_start+0x43/0x80 [btrfs]
[ 176.607423] normal_work_helper+0x79/0x350 [btrfs]
[ 176.608166] ? __schedule+0x268/0x8a0
[ 176.608775] process_one_work+0x1ae/0x3d0
[ 176.609420] worker_thread+0x3c/0x3b0
[ 176.610032] ? process_one_work+0x3d0/0x3d0
[ 176.610701] kthread+0x11e/0x140
[ 176.611256] ? kthread_park+0x90/0x90
[ 176.611864] ret_from_fork+0x35/0x40
[ 176.612485] Kernel Offset: disabled
Elapsed time: 180
#!/bin/bash
# To reproduce,
# 1) save job-script and this script (both are attached in 0day report email)
# 2) run this script with your compiled kernel and optional env $INSTALL_MOD_PATH
kernel=$1
initrds=(
/osimage/debian/debian-x86_64-2018-04-03.cgz
/lkp/lkp/lkp-x86_64.cgz
/osimage/deps/debian-x86_64-2018-04-03.cgz/run-ipconfig_2018-04-03.cgz
/osimage/deps/debian-x86_64-2018-04-03.cgz/lkp_2018-04-03.cgz
/osimage/deps/debian-x86_64-2018-04-03.cgz/rsync-rootfs_2018-04-03.cgz
/osimage/deps/debian-x86_64-2018-04-03.cgz/fs_2018-06-12.cgz
/osimage/deps/debian-x86_64-2018-04-03.cgz/xfstests_2018-08-30.cgz
/osimage/pkg/debian-x86_64-2018-04-03.cgz/xfstests-x86_64-cc8831f9_2018-09-19.cgz
)
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Rong Chen
View attachment "config-4.20.0-rc1-00072-gf5c9b46" of type "text/plain" (168509 bytes)
View attachment "job-script" of type "text/plain" (5223 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (17892 bytes)
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