syzbot

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WARNING: CPU: 0 PID: 4463 at fs/hfsplus/extents.c:346 hfsplus_free_extents+0x703/0xae0
Modules linked in:
CPU: 0 PID: 4463 Comm: syz-executor400 Not tainted 6.1.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:hfsplus_free_extents+0x703/0xae0 fs/hfsplus/extents.c:346
Code: 0f cb 44 89 ef 89 de e8 bb cb 2b ff 41 39 dd 75 20 49 83 c7 28 e8 4d ca 2b ff 41 bc 05 00 00 00 e9 e2 f9 ff ff e8 3d ca 2b ff <0f> 0b e9 83 f9 ff ff 44 89 ef 89 de e8 8c cb 2b ff 41 29 dd 73 0a
RSP: 0018:ffffc9000477ef30 EFLAGS: 00010293
RAX: ffffffff825edf83 RBX: ffff888063ec6820 RCX: ffff88801bb69dc0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88807d504048
RBP: ffff88807d502000 R08: dffffc0000000000 R09: ffffed100faa080a
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000011 R14: 0000000000000011 R15: ffff888063ed86d8
FS:  00007febb658f6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffd4067efa CR3: 00000000284a5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_file_truncate+0x868/0xc60 fs/hfsplus/extents.c:592
 hfsplus_write_begin+0xc2/0xd0 fs/hfsplus/inode.c:56
 cont_expand_zero fs/buffer.c:2383 [inline]
 cont_write_begin+0x312/0x880 fs/buffer.c:2446
 hfsplus_write_begin+0x86/0xd0 fs/hfsplus/inode.c:52
 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3845
 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3973
 generic_file_write_iter+0xab/0x310 mm/filemap.c:4005
 __kernel_write_iter+0x2ff/0x710 fs/read_write.c:517
 __kernel_write+0x11c/0x170 fs/read_write.c:537
 __dump_emit+0x232/0x350 fs/coredump.c:804
 do_coredump+0x193b/0x2700 fs/coredump.c:764
 get_signal+0x1428/0x17a0 kernel/signal.c:2857
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:288
RIP: 0033:0x7febb6de2169
Code: Unable to access opcode bytes at 0x7febb6de213f.
RSP: 002b:00007febb658f148 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007febb6e646e8 RCX: 00007febb6de2169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000080
RBP: 00007febb6e646e0 R08: 0000000000000000 R09: 000000000000000b
R10: 0000000000000000 R11: 0000000000000202 R12: 00007febb6e646ec
R13: 000000000000000b R14: 00007fffd4065830 R15: 00007fffd4065918
 </TASK>