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kernel BUG at fs/ext4/inode.c:2618!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 9140 Comm: syz-executor0 Not tainted 4.9.141+ #23
task: ffff8801c379df00 task.stack: ffff8801cdbd0000
RIP: 0010:[<ffffffff816c4f59>]  [<ffffffff816c4f59>] mpage_prepare_extent_to_map+0x719/0x9a0 fs/ext4/inode.c:2618
RSP: 0018:ffff8801cdbd7738  EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffffea0005eba3c0 RCX: ffffc90003565000
RDX: 00000000000003ab RSI: ffffffff816c4f59 RDI: ffffea0005eba3d0
RBP: ffff8801cdbd78f8 R08: ffff8801c379e7b0 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8801cdbd7a60
FS:  0000000000000000(0000) GS:ffff8801db600000(0063) knlGS:00000000f5557b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002fd21000 CR3: 00000001c832e000 CR4: 00000000001606b0
Stack:
 1ffff10039b7aef6 ffff8801cdbd77d0 ffff8801cdbd7a68 ffff8801cdbd7a70
 00000002c379e7b0 0007ffffffffffff ffff8801ca781c18 000000090000000c
 7fffffffffffffff ffff8801cdbd7810 ffff8801cdbd7a78 ffffed0039b7af4d
Call Trace:
 [<ffffffff816d58ee>] ext4_writepages+0xeee/0x2e00 fs/ext4/inode.c:2780
 [<ffffffff81433d3f>] do_writepages+0xef/0x1d0 mm/page-writeback.c:2331
 [<ffffffff814119b9>] __filemap_fdatawrite_range+0x1a9/0x250 mm/filemap.c:390
 [<ffffffff81411b21>] __filemap_fdatawrite mm/filemap.c:398 [inline]
 [<ffffffff81411b21>] filemap_fdatawrite mm/filemap.c:403 [inline]
 [<ffffffff81411b21>] filemap_write_and_wait+0x61/0x130 mm/filemap.c:541
 [<ffffffff815478d5>] ioctl_fiemap fs/ioctl.c:207 [inline]
 [<ffffffff815478d5>] do_vfs_ioctl+0xc95/0x11a0 fs/ioctl.c:661
 [<ffffffff81619d0c>] C_SYSC_ioctl fs/compat_ioctl.c:1624 [inline]
 [<ffffffff81619d0c>] compat_SyS_ioctl+0x1ac/0x1fd0 fs/compat_ioctl.c:1549
 [<ffffffff81006311>] do_syscall_32_irqs_on arch/x86/entry/common.c:328 [inline]
 [<ffffffff81006311>] do_fast_syscall_32+0x2f1/0xa10 arch/x86/entry/common.c:390
 [<ffffffff82818de0>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137
Code: fc ff ff 48 89 95 b0 fe ff ff e8 23 6b c5 ff 48 8b 95 b0 fe ff ff 48 8d 42 ff e9 6f ff ff ff e8 0e 6b c5 ff 0f 0b e8 07 6b c5 ff <0f> 0b 31 c0 89 85 b0 fe ff ff e8 f8 6a c5 ff 8b 85 18 ff ff ff 
RIP  [<ffffffff816c4f59>] mpage_prepare_extent_to_map+0x719/0x9a0 fs/ext4/inode.c:2618
 RSP <ffff8801cdbd7738>
---[ end trace 015ab50e20f7fc20 ]---