syz-executor3 (4748) used greatest stack depth: 23368 bytes left
syz-executor2 (5645) used greatest stack depth: 22984 bytes left
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2618!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 2083 Comm: syz-executor2 Not tainted 4.9.128+ #41
task: ffff8801cdee17c0 task.stack: ffff8801cdd30000
RIP: 0010:[<ffffffff8169b409>]  [<ffffffff8169b409>] mpage_prepare_extent_to_map+0x719/0x9a0 fs/ext4/inode.c:2618
RSP: 0018:ffff8801cdd37688  EFLAGS: 00010293
RAX: ffff8801cdee17c0 RBX: ffffea00070c5380 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8169b409 RDI: ffffea00070c5390
RBP: ffff8801cdd37848 R08: ffff8801cdee2070 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8801cdd379b0
FS:  0000000002176940(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff3d293d2c CR3: 00000001ce78a000 CR4: 00000000001606b0
Stack:
 1ffff10039ba6ee0 ffff8801cdd37720 ffff8801cdd379b8 ffff8801cdd379c0
 0000000200000246 0007ffffffffffff ffff8801c1bf4c78 000000010000000c
 7fffffffffffffff ffff8801cdd37760 ffff8801cdd379c8 ffffed0039ba6f37
Call Trace:
 [<ffffffff816abd9e>] ext4_writepages+0xeee/0x2e00 fs/ext4/inode.c:2780
 [<ffffffff8141b61f>] do_writepages+0xef/0x1d0 mm/page-writeback.c:2331
 [<ffffffff813fa7d9>] __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390
 [<ffffffff813faa3a>] filemap_fdatawrite_range+0x2a/0x40 mm/filemap.c:410
 [<ffffffff817c2fd3>] jbd2_journal_begin_ordered_truncate+0x133/0x190 fs/jbd2/transaction.c:2595
 [<ffffffff816ba0f8>] ext4_begin_ordered_truncate fs/ext4/inode.c:133 [inline]
 [<ffffffff816ba0f8>] ext4_evict_inode+0xd68/0x1230 fs/ext4/inode.c:233
 [<ffffffff8154241e>] evict+0x22e/0x4f0 fs/inode.c:553
 [<ffffffff81543511>] iput_final fs/inode.c:1516 [inline]
 [<ffffffff81543511>] iput+0x371/0x900 fs/inode.c:1543
 [<ffffffff815213d5>] do_unlinkat+0x4d5/0x660 fs/namei.c:4087
 [<ffffffff81522a2a>] SYSC_unlink fs/namei.c:4128 [inline]
 [<ffffffff81522a2a>] SyS_unlink+0x1a/0x20 fs/namei.c:4126
 [<ffffffff8100554f>] do_syscall_64+0x19f/0x480 arch/x86/entry/common.c:282
 [<ffffffff8278df13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: fc ff ff 48 89 95 b0 fe ff ff e8 53 e6 c6 ff 48 8b 95 b0 fe ff ff 48 8d 42 ff e9 6f ff ff ff e8 3e e6 c6 ff 0f 0b e8 37 e6 c6 ff <0f> 0b 31 c0 89 85 b0 fe ff ff e8 28 e6 c6 ff 8b 85 18 ff ff ff 
RIP  [<ffffffff8169b409>] mpage_prepare_extent_to_map+0x719/0x9a0 fs/ext4/inode.c:2618
 RSP <ffff8801cdd37688>
---[ end trace 9ea9756de764a548 ]---