RDX: 0000000000000001 RSI: 0000000020000380 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000792 R14: 00000000006ff650 R15: 0000000000000012
------------[ cut here ]------------
kernel BUG at fs/btrfs/file.c:997!
invalid opcode: 0000 [#1] SMP KASAN PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 2 PID: 10206 Comm: syz-executor4 Not tainted 4.17.0-rc4+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__btrfs_drop_extents+0x14ec/0x1b70 fs/btrfs/file.c:997
RSP: 0018:ffff88009cf66b98 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffffff81faabdc
RDX: 0000000000040000 RSI: ffffc90008c6d000 RDI: 0000000000000282
RBP: ffff88009cf66dd8 R08: ffffed00209a46eb R09: 0000000000000001
R10: ffffed00209a46ea R11: 00000000000054bd R12: ffff88009cf66db0
R13: 0000000000001000 R14: ffff8800b7e2c0b0 R15: ffff880102f13180
FS:  00007f2d99a57700(0000) GS:ffff880104d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd1e7766e0 CR3: 00000000b4916005 CR4: 00000000001606e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 cow_file_range_inline.constprop.71+0x8f5/0xd90 fs/btrfs/inode.c:316
 cow_file_range.isra.64+0x5d8/0x890 fs/btrfs/inode.c:973
 run_delalloc_nocow+0xcaf/0x1560 fs/btrfs/inode.c:1556
 run_delalloc_range+0x448/0x9e0 fs/btrfs/inode.c:1612
 writepage_delalloc+0x257/0x460 fs/btrfs/extent_io.c:3253
 __extent_writepage+0x536/0x8d0 fs/btrfs/extent_io.c:3505
 extent_write_cache_pages+0x31d/0xb10 fs/btrfs/extent_io.c:3995
 extent_writepages+0xc7/0x110 fs/btrfs/extent_io.c:4124
 btrfs_writepages+0x3e/0x50 fs/btrfs/inode.c:8711
 do_writepages+0xf2/0x290 mm/page-writeback.c:2341
 __filemap_fdatawrite_range+0x251/0x310 mm/filemap.c:445
 filemap_fdatawrite_range+0x2a/0x40 mm/filemap.c:465
 btrfs_fdatawrite_range+0x49/0xe0 fs/btrfs/file.c:3397
 __btrfs_direct_write fs/btrfs/file.c:1829 [inline]
 btrfs_file_write_iter+0x127e/0x1652 fs/btrfs/file.c:1954
 call_write_iter include/linux/fs.h:1784 [inline]
 do_iter_readv_writev+0x3bd/0x5c0 fs/read_write.c:680
 do_iter_write+0x154/0x540 fs/read_write.c:959
 vfs_writev+0x158/0x2d0 fs/read_write.c:1004
 do_writev+0xe1/0x240 fs/read_write.c:1039
 __do_sys_writev fs/read_write.c:1112 [inline]
 __se_sys_writev fs/read_write.c:1109 [inline]
 __x64_sys_writev+0x75/0xb0 fs/read_write.c:1109
 do_syscall_64+0xda/0x560 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a09
RSP: 002b:00007f2d99a56c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f2d99a576d4 RCX: 0000000000455a09
RDX: 0000000000000001 RSI: 0000000020000380 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000792 R14: 00000000006ff650 R15: 0000000000000012
Code: 02 48 8b 45 30 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b7 03 00 00 48 8b 45 30 c7 00 01 00 00 00 e9 46 fc ff ff e8 64 ae 65 ff <0f> 0b e8 5d ae 65 ff 0f 0b e8 56 ae 65 ff 48 8b 85 70 fe ff ff
RIP: __btrfs_drop_extents+0x14ec/0x1b70 fs/btrfs/file.c:997 RSP: ffff88009cf66b98
---[ end trace 2699b2492e0b219b ]---