EXT4-fs (loop2): This should not happen!! Data will be lost
EXT4-fs (loop2): Total free blocks count 0
EXT4-fs (loop2): Free/Dirty block details
EXT4-fs (loop2): free_blocks=2415919104
EXT4-fs (loop2): dirty_blocks=16
EXT4-fs (loop2): Block reservation details
EXT4-fs (loop2): i_reserved_data_blocks=1
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2749!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 334 Comm: syz-executor406 Not tainted 6.1.75-syzkaller-00074-g4744b3a4ed72 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:ext4_writepages+0x3fab/0x3fd0 fs/ext4/inode.c:2748
Code: fb 80 ff 31 ff 89 de e8 d3 fb 80 ff 45 84 f6 75 2a e8 39 f9 80 ff 49 bc 00 00 00 00 00 fc ff df e9 6e f6 ff ff e8 25 f9 80 ff <0f> 0b e8 1e f9 80 ff e8 d5 0a 0c ff e9 46 c3 ff ff e8 0f f9 80 ff
RSP: 0018:ffffc900010e70a0 EFLAGS: 00010293
RAX: ffffffff81f4752b RBX: 0000008000000000 RCX: ffff8881227ee540
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900010e74b0 R08: ffffffff81f43c8b R09: ffffed1021705179
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881094ec000
R13: ffff88810b828d00 R14: 000000c410000000 R15: ffffc900010e7380
FS:  00007f1c2864d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 0000000121591000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_writepages+0x385/0x620 mm/page-writeback.c:2472
 filemap_fdatawrite_wbc+0x153/0x1b0 mm/filemap.c:402
 __filemap_fdatawrite_range mm/filemap.c:435 [inline]
 filemap_write_and_wait_range+0x1a4/0x290 mm/filemap.c:688
 filemap_write_and_wait include/linux/pagemap.h:60 [inline]
 iomap_bmap+0x271/0x550 fs/iomap/fiemap.c:110
 ext4_bmap+0x2ea/0x430 fs/ext4/inode.c:3224
 bmap+0xa5/0xe0 fs/inode.c:1842
 ioctl_fibmap fs/ioctl.c:77 [inline]
 file_ioctl fs/ioctl.c:327 [inline]
 do_vfs_ioctl+0x202f/0x29a0 fs/ioctl.c:849
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl+0x99/0x190 fs/ioctl.c:856
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1c286b1679
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c2864d218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1c28738618 RCX: 00007f1c286b1679
RDX: 0000000020000080 RSI: 0000000000000001 RDI: 0000000000000004
RBP: 00007f1c28738610 R08: 00007ffe3f69d007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1c28705848
R13: 0030656c69662f2e R14: 00746e6572727563 R15: 7275632e73646970
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_writepages+0x3fab/0x3fd0 fs/ext4/inode.c:2748
Code: fb 80 ff 31 ff 89 de e8 d3 fb 80 ff 45 84 f6 75 2a e8 39 f9 80 ff 49 bc 00 00 00 00 00 fc ff df e9 6e f6 ff ff e8 25 f9 80 ff <0f> 0b e8 1e f9 80 ff e8 d5 0a 0c ff e9 46 c3 ff ff e8 0f f9 80 ff
RSP: 0018:ffffc900010e70a0 EFLAGS: 00010293
RAX: ffffffff81f4752b RBX: 0000008000000000 RCX: ffff8881227ee540
RDX: 0000000000000000 RSI: 0000008000000000 RDI: 0000000000000000
RBP: ffffc900010e74b0 R08: ffffffff81f43c8b R09: ffffed1021705179
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881094ec000
R13: ffff88810b828d00 R14: 000000c410000000 R15: ffffc900010e7380
FS:  00007f1c2864d6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c2034d000 CR3: 0000000121591000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400