Hi, I noticed this when I was doing some build tests; is this a known issue?
[ 74.030154] BUG: sleeping function called from invalid context at mm/slab.h:565
[ 74.037763] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 14425, name: dd
[ 74.046849] 4 locks held by dd/14425:
[ 74.052024] #0: ffff91960e34f498 (sb_writers#14){.+.+}, at: mnt_want_write+0x20/0x50
[ 74.060008] #1: ffff9195fe328708 (&sb->s_type->i_mutex_key#18){+.+.}, at: do_truncate+0x69/0xd0
[ 74.070311] #2: ffff91960e34f6f8 (sb_internal#2){.+.+}, at: start_transaction+0x3cf/0x550
[ 74.078721] #3: ffff919602d6c740 (btrfs-tree-00){++++}, at: btrfs_tree_lock+0x77/0x270
[ 74.088791] CPU: 0 PID: 14425 Comm: dd Not tainted 5.6.0-rc2-xfstests-00009-g9db176bceb5c #1518
[ 74.097618] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 74.106966] Call Trace:
[ 74.110926] dump_stack+0x71/0xa0
[ 74.114369] ___might_sleep.cold+0xa6/0xb6
[ 74.118586] kmem_cache_alloc+0x26f/0x350
[ 74.122724] alloc_extent_state+0x20/0x1a0
[ 74.126989] __clear_extent_bit+0x2f4/0x5c0
[ 74.131290] ? _raw_spin_unlock_irq+0x24/0x30
[ 74.135771] btrfs_truncate_inode_items+0x33e/0xd90
[ 74.140769] ? do_raw_spin_unlock+0x4b/0xc0
[ 74.145076] btrfs_setsize.isra.0+0x203/0x4d0
[ 74.149554] btrfs_setattr+0x5e/0xe0
[ 74.153254] notify_change+0x357/0x4e0
[ 74.157120] do_truncate+0x76/0xd0
[ 74.160654] do_last+0x404/0x860
[ 74.164004] path_openat+0x8f/0x240
[ 74.167617] do_filp_open+0x91/0x100
[ 74.171327] ? do_raw_spin_unlock+0x4b/0xc0
[ 74.175650] ? _raw_spin_unlock+0x1f/0x30
[ 74.179778] do_sys_openat2+0x1fc/0x2a0
[ 74.183742] do_sys_open+0x44/0x80
[ 74.187323] do_syscall_64+0x50/0x1f0
[ 74.192500] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 74.197676] RIP: 0033:0x7fd0d67be1ae
[ 74.201369] Code: 25 00 00 41 00 3d 00 00 41 00 74 48 48 8d 05 59 65 0d 00 8b 00 85 c0 75 69 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 0f 87 a6 00 00 00 48 8b 4c 24 28 64 48 33 0c 25
[ 74.221644] RSP: 002b:00007fff579e3000 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 74.229331] RAX: ffffffffffffffda RBX: 000055cbdb1853e0 RCX: 00007fd0d67be1ae
[ 74.236586] RDX: 0000000000000241 RSI: 00007fff579e4e2c RDI: 00000000ffffff9c
[ 74.243835] RBP: 0000000000000001 R08: 000055cbdb17f2e6 R09: 0000000000000000
[ 74.251092] R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000241
[ 74.258452] R13: 00007fff579e4e2c R14: 0000000000000001 R15: 00007fff579e32f8
It's causing very large number of xfstests failures:
TESTRUNID: tytso-20200222194637
KERNEL: kernel 5.6.0-rc2-xfstests-00009-g9db176bceb5c #1518 SMP Fri Feb 21 19:32:23 EST 2020 x86_64
CMDLINE: -c btrfs -g auto
CPUS: 2
MEM: 7680
btrfs/default: 988 tests, 300 failures, 203 skipped, 8951 seconds
Failures: btrfs/002 btrfs/004 btrfs/005 btrfs/007 btrfs/013
btrfs/014 btrfs/020 btrfs/022 btrfs/024 btrfs/026 btrfs/028
btrfs/034 btrfs/037 btrfs/041 btrfs/055 btrfs/056 btrfs/057
btrfs/076 btrfs/078 btrfs/080 btrfs/081 btrfs/094 btrfs/095
btrfs/096 btrfs/098 btrfs/108 btrfs/109 btrfs/119 btrfs/137
btrfs/138 btrfs/139 btrfs/153 btrfs/156 btrfs/159 btrfs/169
btrfs/173 btrfs/174 btrfs/177 btrfs/179 btrfs/183 btrfs/188
btrfs/191 btrfs/199 btrfs/200 btrfs/201 btrfs/204 generic/001
generic/005 generic/006 generic/007 generic/008 generic/009
generic/011 generic/013 generic/014 generic/018 generic/027
generic/030 generic/032 generic/033 generic/039 generic/040
generic/041 generic/056 generic/057 generic/062 generic/066
generic/068 generic/070 generic/074 generic/075 generic/076
generic/077 generic/078 generic/079 generic/080 generic/083
generic/086 generic/087 generic/089 generic/090 generic/091
generic/092 generic/093 generic/094 generic/095 generic/096
generic/097 generic/099 generic/101 generic/103 generic/104
generic/105 generic/107 generic/109 generic/110 generic/112
generic/113 generic/114 generic/116 generic/117 generic/118
generic/119 generic/121 generic/122 generic/123 generic/124
generic/126 generic/127 generic/129 generic/130 generic/131
generic/133 generic/134 generic/136 generic/137 generic/138
generic/139 generic/140 generic/142 generic/143 generic/144
generic/146 generic/149 generic/150 generic/151 generic/152
generic/154 generic/155 generic/157 generic/158 generic/159
generic/169 generic/175 generic/176 generic/177 generic/178
generic/179 generic/180 generic/181 generic/182 generic/193
generic/198 generic/199 generic/200 generic/204 generic/209
generic/213 generic/225 generic/239 generic/240 generic/241
generic/245 generic/248 generic/249 generic/254 generic/255
generic/256 generic/257 generic/259 generic/260 generic/263
generic/269 generic/277 generic/285 generic/286 generic/297
generic/298 generic/299 generic/300 generic/301 generic/302
generic/303 generic/304 generic/306 generic/307 generic/308
generic/309 generic/310 generic/311 generic/313 generic/315
generic/316 generic/318 generic/319 generic/320 generic/321
generic/322 generic/324 generic/325 generic/329 generic/336
generic/337 generic/339 generic/342 generic/343 generic/347
generic/348 generic/352 generic/353 generic/356 generic/357
generic/361 generic/375 generic/376 generic/377 generic/389
generic/390 generic/391 generic/393 generic/407 generic/408
generic/409 generic/410 generic/411 generic/414 generic/415
generic/416 generic/418 generic/420 generic/423 generic/426
generic/427 generic/434 generic/436 generic/438 generic/439
generic/444 generic/446 generic/447 generic/448 generic/450
generic/451 generic/454 generic/463 generic/464 generic/465
generic/467 generic/469 generic/472 generic/475 generic/476
generic/477 generic/479 generic/480 generic/481 generic/483
generic/488 generic/489 generic/490 generic/493 generic/494
generic/495 generic/496 generic/498 generic/501 generic/502
generic/509 generic/510 generic/511 generic/512 generic/515
generic/516 generic/520 generic/523 generic/524 generic/526
generic/527 generic/528 generic/531 generic/532 generic/534
generic/535 generic/538 generic/539 generic/541 generic/543
generic/545 generic/546 generic/547 generic/551 generic/552
generic/553 generic/555 generic/557 generic/560 generic/561
generic/562 generic/564 generic/567 generic/569 generic/571
generic/578 generic/585 generic/586 generic/588 generic/589
generic/591 shared/002 shared/298
Totals: 785 tests, 203 skipped, 300 failures, 0 errors, 8909s
FSTESTIMG: gce-xfstests/xfstests-202002211357
FSTESTPRJ: gce-xfstests
FSTESTVER: blktests f7b47c5 (Tue, 11 Feb 2020 14:22:21 -0800)
FSTESTVER: e2fsprogs v1.45.4-15-g4b4f7b35 (Wed, 9 Oct 2019 20:25:01 -0400)
FSTESTVER: fio fio-3.18 (Wed, 5 Feb 2020 07:59:58 -0700)
FSTESTVER: fsverity v1.0 (Wed, 6 Nov 2019 10:35:02 -0800)
FSTESTVER: ima-evm-utils v1.2 (Fri, 26 Jul 2019 07:42:17 -0400)
FSTESTVER: nvme-cli v1.10.1 (Tue, 7 Jan 2020 13:55:21 -0700)
FSTESTVER: quota 9a001cc (Tue, 5 Nov 2019 16:12:59 +0100)
FSTESTVER: util-linux v2.35 (Tue, 21 Jan 2020 11:15:21 +0100)
FSTESTVER: xfsprogs v5.4.0 (Fri, 20 Dec 2019 16:47:12 -0500)
FSTESTVER: xfstests-bld a7ae9ff (Tue, 18 Feb 2020 14:22:36 -0500)
FSTESTVER: xfstests linux-v3.8-2692-g3fe2fd0d (Fri, 21 Feb 2020 13:42:43 -0500)
FSTESTCFG: btrfs
FSTESTSET: -g auto
FSTESTOPT: aex
GCE ID: 8335279961640039838
