EXT4-fs error (device loop0): ext4_do_update_inode:6707: inode #15: comm kworker/u4:2: corrupted inode contents
EXT4-fs error (device loop0): ext4_dirty_inode:7679: inode #15: comm kworker/u4:2: 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: 24 Comm: kworker/u4:2 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
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_mb_use_inode_pa+0x6bf/0x720 fs/ext4/mballoc.c:4779
Code: e8 06 32 a0 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 72 2c 27 ff 90 0f 0b e8 6a 2c 27 ff 90 0f 0b e8 62 2c 27 ff 90 <0f> 0b e8 5a 2c 27 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80
RSP: 0018:ffffc9000031e4e0 EFLAGS: 00010293
RAX: ffffffff82a1f43e RBX: 00000000ffffffef RCX: ffff88801db2cb00
RDX: 0000000000000000 RSI: 0000000000000016 RDI: 0000000000000005
RBP: 1ffff11008aa2207 R08: ffff888045515a73 R09: 1ffff11008aa2b4e
R10: dffffc0000000000 R11: ffffed1008aa2b4f R12: 0000000000000000
R13: 0000000000000016 R14: 1ffff11008aa2b51 R15: ffff888045515a88
FS:  0000000000000000(0000) GS:ffff88808a9fe000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe2b659870 CR3: 0000000013637000 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
 __writeback_single_inode+0x136/0x1220 fs/fs-writeback.c:1809
 writeback_sb_inodes+0x9de/0x1af0 fs/fs-writeback.c:2120
 __writeback_inodes_wb+0x114/0x250 fs/fs-writeback.c:2196
 wb_writeback+0x42f/0xad0 fs/fs-writeback.c:2307
 wb_check_start_all fs/fs-writeback.c:2433 [inline]
 wb_do_writeback fs/fs-writeback.c:2480 [inline]
 wb_workfn+0x980/0x10f0 fs/fs-writeback.c:2518
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_mb_use_inode_pa+0x6bf/0x720 fs/ext4/mballoc.c:4779
Code: e8 06 32 a0 ff 48 ba 00 00 00 00 00 fc ff df e9 d7 fa ff ff e8 72 2c 27 ff 90 0f 0b e8 6a 2c 27 ff 90 0f 0b e8 62 2c 27 ff 90 <0f> 0b e8 5a 2c 27 ff 90 0f 0b 48 8b 0c 24 48 83 c1 54 80 e1 07 80
RSP: 0018:ffffc9000031e4e0 EFLAGS: 00010293
RAX: ffffffff82a1f43e RBX: 00000000ffffffef RCX: ffff88801db2cb00
RDX: 0000000000000000 RSI: 0000000000000016 RDI: 0000000000000005
RBP: 1ffff11008aa2207 R08: ffff888045515a73 R09: 1ffff11008aa2b4e
R10: dffffc0000000000 R11: ffffed1008aa2b4f R12: 0000000000000000
R13: 0000000000000016 R14: 1ffff11008aa2b51 R15: ffff888045515a88
FS:  0000000000000000(0000) GS:ffff88808a9fe000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe2b659870 CR3: 0000000013637000 CR4: 0000000000352ef0