EXT4-fs warning (device sda): ext4_da_update_reserve_space:372: ext4_da_update_reserve_space: ino 16043, used 4 with only 0 reserved data blocks
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WARNING: CPU: 1 PID: 16278 at fs/ext4/inode.c:376 ext4_da_update_reserve_space+0x4f4/0x630 fs/ext4/inode.c:372
Modules linked in:
CPU: 1 PID: 16278 Comm: syz-executor.6 Not tainted 5.10.220 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:ext4_da_update_reserve_space+0x4f4/0x630 fs/ext4/inode.c:376
Code: 11 00 0f 85 31 01 00 00 41 55 48 8b 7d 28 49 c7 c0 a0 c1 51 84 48 c7 c1 80 ab 51 84 53 ba 74 01 00 00 4c 89 c6 e8 6c 88 0e 00 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 10 48 c1 ea 03 0f
RSP: 0018:ffff88804f64f400 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffffc90008616000
RDX: 0000000000040000 RSI: ffffffff81a85fc8 RDI: ffffed1009ec9e4f
RBP: ffff88801d636f80 R08: 0000000000000090 R09: ffff88806cf37b0f
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: ffff88800fb20000 R15: ffff88801d637538
FS:  00007f61e767e700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5d8bcef3a4 CR3: 00000000208ba000 CR4: 0000000000350ee0
Call Trace:
 ext4_ext_map_blocks+0x1336/0x5830 fs/ext4/extents.c:4364
 ext4_map_blocks+0x63f/0x1910 fs/ext4/inode.c:643
 mpage_map_one_extent fs/ext4/inode.c:2410 [inline]
 mpage_map_and_submit_extent fs/ext4/inode.c:2463 [inline]
 ext4_writepages+0x19bf/0x3350 fs/ext4/inode.c:2831
 do_writepages+0xee/0x2a0 mm/page-writeback.c:2352
 __filemap_fdatawrite_range+0x24b/0x2f0 mm/filemap.c:422
 filemap_write_and_wait_range mm/filemap.c:655 [inline]
 filemap_write_and_wait_range+0x65/0x100 mm/filemap.c:649
 ext4_collapse_range fs/ext4/extents.c:5377 [inline]
 ext4_fallocate+0x1c24/0x3860 fs/ext4/extents.c:4739
 vfs_fallocate+0x48f/0xda0 fs/open.c:309
 ksys_fallocate fs/open.c:332 [inline]
 __do_sys_fallocate fs/open.c:340 [inline]
 __se_sys_fallocate fs/open.c:338 [inline]
 __x64_sys_fallocate+0xcf/0x140 fs/open.c:338
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x67/0xd1
RIP: 0033:0x7f61ea108b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61e767e188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f61ea21bf60 RCX: 00007f61ea108b19
RDX: 0000000000004000 RSI: 0000000000000008 RDI: 0000000000000003
RBP: 00007f61e767e1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffd6d42f11f R14: 00007f61e767e300 R15: 0000000000022000
irq event stamp: 3315
hardirqs last  enabled at (3325): [<ffffffff812991ad>] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567
hardirqs last disabled at (3332): [<ffffffff812990b9>] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482
softirqs last  enabled at (2572): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20
softirqs last disabled at (2521): [<ffffffff84001092>] asm_call_irq_on_stack+0x12/0x20
---[ end trace ebdfe997bf158bd9 ]---