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kernel BUG at fs/ext4/mballoc.c:4685!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5339 Comm: syz.0.0 Not tainted 6.16.0-rc1-syzkaller-00101-g27605c8c0f69 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 fs/ext4/mballoc.c:4685
Code: e8 64 53 ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 10 dc 47 ff 90 0f 0b e8 08 dc 47 ff 90 0f 0b e8 00 dc 47 ff 90 <0f> 0b e8 f8 db 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000d4c73c8 EFLAGS: 00010293
RAX: ffffffff827882f0 RBX: 00000000ffffffff RCX: ffff88800066a440
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: 1ffff1100874d730 R08: ffff888043a6c41b R09: 1ffff1100874d883
R10: dffffc0000000000 R11: ffffed100874d884 R12: 0000000000000004
R13: 0000000000000002 R14: 1ffff1100874d886 R15: ffff888043a6c430
FS:  00007f63c2fdf6c0(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63c2fdefc8 CR3: 0000000043341000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_mb_use_preallocated+0x660/0x13f0 fs/ext4/mballoc.c:4902
 ext4_mb_new_blocks+0x5b4/0x46a0 fs/ext4/mballoc.c:6206
 ext4_ext_map_blocks+0x161a/0x6ac0 fs/ext4/extents.c:4383
 ext4_map_create_blocks fs/ext4/inode.c:609 [inline]
 ext4_map_blocks+0x931/0x18d0 fs/ext4/inode.c:813
 ext4_alloc_file_blocks+0x3b8/0xc60 fs/ext4/extents.c:4538
 ext4_zero_range+0x39b/0xb90 fs/ext4/extents.c:4618
 ext4_fallocate+0x74c/0xcd0 fs/ext4/extents.c:4790
 vfs_fallocate+0x6a0/0x830 fs/open.c:341
 ksys_fallocate fs/open.c:365 [inline]
 __do_sys_fallocate fs/open.c:370 [inline]
 __se_sys_fallocate fs/open.c:368 [inline]
 __x64_sys_fallocate+0xc0/0x110 fs/open.c:368
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f63c218e929
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:00007f63c2fdf038 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f63c23b6160 RCX: 00007f63c218e929
RDX: 0000000000000fff RSI: 0000000000000011 RDI: 0000000000000004
RBP: 00007f63c2210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f63c23b6160 R15: 00007ffde4346398
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_mb_use_inode_pa+0x6c1/0x720 fs/ext4/mballoc.c:4685
Code: e8 64 53 ab ff 48 ba 00 00 00 00 00 fc ff df e9 da fa ff ff e8 10 dc 47 ff 90 0f 0b e8 08 dc 47 ff 90 0f 0b e8 00 dc 47 ff 90 <0f> 0b e8 f8 db 47 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000d4c73c8 EFLAGS: 00010293
RAX: ffffffff827882f0 RBX: 00000000ffffffff RCX: ffff88800066a440
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: 1ffff1100874d730 R08: ffff888043a6c41b R09: 1ffff1100874d883
R10: dffffc0000000000 R11: ffffed100874d884 R12: 0000000000000004
R13: 0000000000000002 R14: 1ffff1100874d886 R15: ffff888043a6c430
FS:  00007f63c2fdf6c0(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63c2fdefc8 CR3: 0000000043341000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400