------------[ cut here ]------------
WARNING: CPU: 0 PID: 27304 at fs/hfsplus/extents.c:346 hfsplus_free_extents+0x6e9/0xac0 fs/hfsplus/extents.c:346
Modules linked in:
CPU: 0 PID: 27304 Comm: syz.7.6320 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hfsplus_free_extents+0x6e9/0xac0 fs/hfsplus/extents.c:346
Code: 8b 1b 0f cb 89 ef 89 de e8 b4 1d 3b ff 39 dd 75 20 49 83 c7 28 e8 47 1c 3b ff 41 bc 05 00 00 00 e9 fa f9 ff ff e8 37 1c 3b ff <0f> 0b e9 9d f9 ff ff 89 ef 89 de e8 87 1d 3b ff 29 dd 73 0a e8 1e
RSP: 0018:ffffc900038477f0 EFLAGS: 00010287
RAX: ffffffff8245bad9 RBX: ffff888027b21020 RCX: 0000000000080000
RDX: ffffc900157d5000 RSI: 0000000000015eba RDI: 0000000000015ebb
RBP: 000000000000014e R08: dffffc0000000000 R09: ffffed100f7b3c0a
R10: ffffed100f7b3c0a R11: 1ffff1100f7b3c09 R12: ffff888027044000
R13: ffff8880508e9cb0 R14: 000000000000014e R15: ffff8880508e9b18
FS:  00007fecbd66a6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c306202 CR3: 000000013fe86000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_file_truncate+0x731/0xb30 fs/hfsplus/extents.c:592
 hfsplus_write_begin+0xc8/0xd0 fs/hfsplus/inode.c:56
 cont_expand_zero fs/buffer.c:2383 [inline]
 cont_write_begin+0x2a9/0x7d0 fs/buffer.c:2446
 hfsplus_write_begin+0x87/0xd0 fs/hfsplus/inode.c:52
 generic_cont_expand_simple+0x136/0x1f0 fs/buffer.c:2347
 hfsplus_setattr+0x165/0x280 fs/hfsplus/inode.c:263
 notify_change+0xc74/0xf40 fs/attr.c:499
 do_truncate+0x197/0x220 fs/open.c:65
 do_sys_ftruncate+0x312/0x3c0 fs/open.c:193
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fecbc78e969
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:00007fecbd66a038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007fecbc9b6160 RCX: 00007fecbc78e969
RDX: 0000000000000000 RSI: 0000000000200004 RDI: 0000000000000005
RBP: 00007fecbc810ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fecbc9b6160 R15: 00007fff1788bfc8
 </TASK>