FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x412/0x560 lib/fault-inject.c:174
 should_failslab+0xa8/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4412 [inline]
 slab_alloc_node mm/slub.c:4765 [inline]
 kmem_cache_alloc_noprof+0x87/0x650 mm/slub.c:4795
 btrfs_alloc_extent_map+0x21/0xf0 fs/btrfs/extent_map.c:48
 btrfs_create_io_em+0x240/0x700 fs/btrfs/inode.c:7513
 cow_one_range fs/btrfs/inode.c:1343 [inline]
 cow_file_range+0x643/0x1310 fs/btrfs/inode.c:1522
 fallback_to_cow+0x5ea/0xa60 fs/btrfs/inode.c:1871
 run_delalloc_nocow+0x10c9/0x17a0 fs/btrfs/inode.c:2295
 writepage_delalloc+0x1270/0x1ee0 fs/btrfs/extent_io.c:1526
 extent_writepage fs/btrfs/extent_io.c:1893 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2580 [inline]
 btrfs_writepages+0x14df/0x2440 fs/btrfs/extent_io.c:2713
 do_writepages+0x32e/0x550 mm/page-writeback.c:2554
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range+0x1ef/0x2f0 mm/filemap.c:412
 btrfs_fdatawrite_range+0x54/0xf0 fs/btrfs/file.c:3891
 btrfs_wait_ordered_range+0x59/0x260 fs/btrfs/ordered-data.c:917
 btrfs_punch_hole fs/btrfs/file.c:2673 [inline]
 btrfs_fallocate+0x525/0x1bb0 fs/btrfs/file.c:3135
 vfs_fallocate+0x669/0x7e0 fs/open.c:340
 ioctl_preallocate fs/ioctl.c:289 [inline]
 file_ioctl+0x63f/0x860 fs/ioctl.c:332
 do_vfs_ioctl+0xc26/0x1530 fs/ioctl.c:576
 __do_sys_ioctl fs/ioctl.c:595 [inline]
 __se_sys_ioctl+0x82/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fadcf19bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fadcff92028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fadcf416090 RCX: 00007fadcf19bf79
RDX: 0000200000000380 RSI: 0000000040305829 RDI: 0000000000000005
RBP: 00007fadcff92090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fadcf416128 R14: 00007fadcf416090 R15: 00007ffd55e91b68
 </TASK>
------------[ cut here ]------------
1
WARNING: fs/btrfs/space-info.h:257 at btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:257 [inline], CPU#0: syz.0.0/5317
WARNING: fs/btrfs/space-info.h:257 at btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:294 [inline], CPU#0: syz.0.0/5317
WARNING: fs/btrfs/space-info.h:257 at btrfs_free_reserved_data_space_noquota+0x3f6/0x6e0 fs/btrfs/delalloc-space.c:189, CPU#0: syz.0.0/5317
Modules linked in:
CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:257 [inline]
RIP: 0010:btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:294 [inline]
RIP: 0010:btrfs_free_reserved_data_space_noquota+0x3f6/0x6e0 fs/btrfs/delalloc-space.c:189
Code: 00 00 74 08 48 89 df e8 08 f0 1f fe 4c 8b 3b 4c 89 ff 4c 8b 64 24 10 4c 89 e6 e8 05 5c b4 fd 4d 39 e7 73 16 e8 9b 59 b4 fd 90 <0f> 0b 90 45 31 ff 41 80 7c 2d 00 00 75 95 eb 9b e8 85 59 b4 fd 41
RSP: 0018:ffffc9000dec66e8 EFLAGS: 00010293
RAX: ffffffff84113e05 RBX: ffff888037919080 RCX: ffff88801fac2480
RDX: 0000000000000000 RSI: 0000000000307000 RDI: 0000000000160000
RBP: dffffc0000000000 R08: ffffffff901172b7 R09: 1ffffffff2022e56
R10: dffffc0000000000 R11: fffffbfff2022e57 R12: 0000000000307000
R13: 1ffff11006f23210 R14: ffff888037919000 R15: 0000000000160000
FS:  00007fadcff926c0(0000) GS:ffff88808ca62000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000806000 CR3: 0000000038479000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_clear_delalloc_extent+0x633/0x790 fs/btrfs/inode.c:2692
 clear_state_bit+0x93/0x3c0 fs/btrfs/extent-io-tree.c:567
 btrfs_clear_extent_bit_changeset+0x725/0xb80 fs/btrfs/extent-io-tree.c:746
 btrfs_clear_extent_bit fs/btrfs/extent-io-tree.h:185 [inline]
 extent_clear_unlock_delalloc+0x46/0x90 fs/btrfs/extent_io.c:472
 cow_file_range+0xd28/0x1310 fs/btrfs/inode.c:1620
 fallback_to_cow+0x5ea/0xa60 fs/btrfs/inode.c:1871
 run_delalloc_nocow+0x10c9/0x17a0 fs/btrfs/inode.c:2295
 writepage_delalloc+0x1270/0x1ee0 fs/btrfs/extent_io.c:1526
 extent_writepage fs/btrfs/extent_io.c:1893 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2580 [inline]
 btrfs_writepages+0x14df/0x2440 fs/btrfs/extent_io.c:2713
 do_writepages+0x32e/0x550 mm/page-writeback.c:2554
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range+0x1ef/0x2f0 mm/filemap.c:412
 btrfs_fdatawrite_range+0x54/0xf0 fs/btrfs/file.c:3891
 btrfs_wait_ordered_range+0x59/0x260 fs/btrfs/ordered-data.c:917
 btrfs_punch_hole fs/btrfs/file.c:2673 [inline]
 btrfs_fallocate+0x525/0x1bb0 fs/btrfs/file.c:3135
 vfs_fallocate+0x669/0x7e0 fs/open.c:340
 ioctl_preallocate fs/ioctl.c:289 [inline]
 file_ioctl+0x63f/0x860 fs/ioctl.c:332
 do_vfs_ioctl+0xc26/0x1530 fs/ioctl.c:576
 __do_sys_ioctl fs/ioctl.c:595 [inline]
 __se_sys_ioctl+0x82/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fadcf19bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fadcff92028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fadcf416090 RCX: 00007fadcf19bf79
RDX: 0000200000000380 RSI: 0000000040305829 RDI: 0000000000000005
RBP: 00007fadcff92090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fadcf416128 R14: 00007fadcf416090 R15: 00007ffd55e91b68
 </TASK>