syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=72, nr_sectors = 2 limit=64
EXT4-fs warning (device loop0): ext4_end_bio:367: I/O error 10 writing to inode 15 starting block 36)
Buffer I/O error on device loop0, logical block 36
syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=296, nr_sectors = 2 limit=64
EXT4-fs warning (device loop0): ext4_end_bio:367: I/O error 10 writing to inode 15 starting block 148)
Buffer I/O error on device loop0, logical block 148
syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=314, nr_sectors = 8 limit=64
EXT4-fs warning (device loop0): ext4_end_bio:367: I/O error 10 writing to inode 15 starting block 157)
Buffer I/O error on device loop0, logical block 157
Buffer I/O error on device loop0, logical block 158
Buffer I/O error on device loop0, logical block 159
Buffer I/O error on device loop0, logical block 160
EXT4-fs error (device loop0): ext4_do_update_inode:6701: inode #15: comm syz.0.0: corrupted inode contents
EXT4-fs error (device loop0): ext4_dirty_inode:7673: inode #15: comm syz.0.0: mark_inode_dirty error
------------[ cut here ]------------
kernel BUG at fs/ext4/mballoc.c:4779!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5347 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:ext4_mb_use_inode_pa+0x6bf/0x720 fs/ext4/mballoc.c:4779
Code: e8 36 0d a0 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 22 75 27 ff 90 0f 0b e8 1a 75 27 ff 90 0f 0b e8 12 75 27 ff 90 <0f> 0b e8 0a 75 27 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80
RSP: 0000:ffffc9000e6de7e0 EFLAGS: 00010287
RAX: ffffffff82a1afde RBX: 00000000ffffffeb RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000000081ab RDI: 00000000000081ac
RBP: 1ffff11008b91807 R08: ffff888045c90a73 R09: 1ffff11008b9214e
R10: dffffc0000000000 R11: ffffed1008b9214f R12: 0000000000000000
R13: 000000000000001a R14: 1ffff11008b92151 R15: ffff888045c90a88
FS:  00007f0e56a556c0(0000) GS:ffff88808aa10000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e49364000 CR3: 000000001f96b000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 ext4_mb_use_preallocated+0x638/0x13e0 fs/ext4/mballoc.c:4996
 ext4_mb_new_blocks+0x596/0x4520 fs/ext4/mballoc.c:6300
 ext4_alloc_branch fs/ext4/indirect.c:340 [inline]
 ext4_ind_map_blocks+0xef3/0x2300 fs/ext4/indirect.c:652
 ext4_map_create_blocks+0xbb/0x530 fs/ext4/inode.c:699
 ext4_map_blocks+0xe8e/0x1c60 fs/ext4/inode.c:942
 mpage_map_one_extent fs/ext4/inode.c:2505 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2601 [inline]
 ext4_do_writepages+0x1978/0x44a0 fs/ext4/inode.c:3077
 ext4_writepages+0x1fe/0x4e0 fs/ext4/inode.c:3171
 do_writepages+0x338/0x560 mm/page-writeback.c:2560
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range mm/filemap.c:412 [inline]
 file_write_and_wait_range+0x36e/0x440 mm/filemap.c:786
 ext4_sync_file+0x252/0xa40 fs/ext4/fsync.c:145
 generic_write_sync include/linux/fs.h:2693 [inline]
 ext4_buffered_write_iter+0x471/0x540 fs/ext4/file.c:378
 ext4_file_write_iter+0xae4/0x1cd0 fs/ext4/file.c:-1
 aio_write+0x5cb/0x870 fs/aio.c:1687
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x798/0x13d0 fs/aio.c:2111
 __do_sys_io_submit fs/aio.c:2170 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2140
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0e55b9f559
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:00007f0e56a54fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f0e55e26090 RCX: 00007f0e55b9f559
RDX: 0000200000000f80 RSI: 0000000000000001 RDI: 00007f0e56a34000
RBP: 00007f0e55c36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0e55e26128 R14: 00007f0e55e26090 R15: 00007ffdebd0c428
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_mb_use_inode_pa+0x6bf/0x720 fs/ext4/mballoc.c:4779
Code: e8 36 0d a0 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 22 75 27 ff 90 0f 0b e8 1a 75 27 ff 90 0f 0b e8 12 75 27 ff 90 <0f> 0b e8 0a 75 27 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80
RSP: 0000:ffffc9000e6de7e0 EFLAGS: 00010287
RAX: ffffffff82a1afde RBX: 00000000ffffffeb RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000000081ab RDI: 00000000000081ac
RBP: 1ffff11008b91807 R08: ffff888045c90a73 R09: 1ffff11008b9214e
R10: dffffc0000000000 R11: ffffed1008b9214f R12: 0000000000000000
R13: 000000000000001a R14: 1ffff11008b92151 R15: ffff888045c90a88
FS:  00007f0e56a556c0(0000) GS:ffff88808aa10000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0e49364000 CR3: 000000001f96b000 CR4: 0000000000352ef0