EXT4-fs (loop1): re-mounted 00000000-0000-0000-0000-000000000000.
------------[ cut here ]------------
kernel BUG at fs/ext4/mballoc.c:4787!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 6243 Comm: syz.1.85 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720
Code: e8 44 62 a8 ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 f0 41 42 ff 90 0f 0b e8 e8 41 42 ff 90 0f 0b e8 e0 41 42 ff 90 <0f> 0b e8 d8 41 42 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900081eec48 EFLAGS: 00010283
RAX: ffffffff827eb490 RBX: 00000000ffffffff RCX: 0000000000080000
RDX: ffffc90021872000 RSI: 00000000000024aa RDI: 00000000000024ab
RBP: 1ffff11036aebd0c R08: ffff8881b575d503 R09: 1ffff11036aebaa0
R10: dffffc0000000000 R11: ffffed1036aebaa1 R12: 0000000000000004
R13: 0000000000000004 R14: 1ffff11036aebaa3 R15: ffff8881b575d518
FS:  00007f8f2914d6c0(0000) GS:ffff8882a9e1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005639f606b000 CR3: 0000000114e14000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ext4_mb_use_preallocated+0x660/0x13f0
 ext4_mb_new_blocks+0x5a1/0x46a0
 ext4_ext_map_blocks+0x1877/0x69c0
 ext4_map_blocks+0x82c/0x16f0
 ext4_iomap_begin+0x1358/0x1820
 iomap_iter+0x5ef/0xeb0
 __iomap_dio_rw+0x12cf/0x1d90
 iomap_dio_rw+0x45/0xb0
 ext4_file_write_iter+0x169c/0x1bc0
 do_iter_readv_writev+0x623/0x8c0
 vfs_writev+0x31a/0x960
 __se_sys_pwritev2+0x179/0x290
 do_syscall_64+0xec/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f2838f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8f2914d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f8f285e5fa0 RCX: 00007f8f2838f7c9
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000008
RBP: 00007f8f283f297f R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8f285e6038 R14: 00007f8f285e5fa0 R15: 00007ffd535359d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720
Code: e8 44 62 a8 ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 f0 41 42 ff 90 0f 0b e8 e8 41 42 ff 90 0f 0b e8 e0 41 42 ff 90 <0f> 0b e8 d8 41 42 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900081eec48 EFLAGS: 00010283
RAX: ffffffff827eb490 RBX: 00000000ffffffff RCX: 0000000000080000
RDX: ffffc90021872000 RSI: 00000000000024aa RDI: 00000000000024ab
RBP: 1ffff11036aebd0c R08: ffff8881b575d503 R09: 1ffff11036aebaa0
R10: dffffc0000000000 R11: ffffed1036aebaa1 R12: 0000000000000004
R13: 0000000000000004 R14: 1ffff11036aebaa3 R15: ffff8881b575d518
FS:  00007f8f2914d6c0(0000) GS:ffff8882a9e1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005639f606b000 CR3: 0000000114e14000 CR4: 00000000000006f0
