loop1: detected capacity change from 0 to 1024 hfsplus: invalid extended attribute record ============================================ WARNING: possible recursive locking detected 6.1.121-syzkaller #0 Tainted: G W -------------------------------------------- syz.1.23/4396 is trying to acquire lock: ffff888056091548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x37f/0x14e0 fs/hfsplus/extents.c:260 but task is already holding lock: ffff888056092988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x306/0xc60 fs/hfsplus/extents.c:577 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&HFSPLUS_I(inode)->extents_lock); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** May be due to missing lock nesting notation 6 locks held by syz.1.23/4396: #0: ffff88805614a460 (sb_writers#18){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393 #1: ffff888056091e00 (&type->i_mutex_dir_key#12/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline] #1: ffff888056091e00 (&type->i_mutex_dir_key#12/1){+.+.}-{3:3}, at: do_unlinkat+0x266/0x820 fs/namei.c:4373 #2: ffff888056092b80 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff888056092b80 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: vfs_unlink+0xe0/0x5f0 fs/namei.c:4311 #3: ffff888074372198 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x15d/0x7f0 fs/hfsplus/dir.c:370 #4: ffff888056092988 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x306/0xc60 fs/hfsplus/extents.c:577 #5: ffff8880743720f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xb7/0x4d0 fs/hfsplus/bitmap.c:182 stack backtrace: CPU: 0 PID: 4396 Comm: syz.1.23 Tainted: G W 6.1.121-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:2983 [inline] check_deadlock kernel/locking/lockdep.c:3026 [inline] validate_chain+0x4711/0x5950 kernel/locking/lockdep.c:3812 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747 hfsplus_get_block+0x37f/0x14e0 fs/hfsplus/extents.c:260 block_read_full_folio+0x403/0xf60 fs/buffer.c:2271 filemap_read_folio+0x199/0x780 mm/filemap.c:2489 do_read_cache_folio+0x2ee/0x810 mm/filemap.c:3626 do_read_cache_page+0x32/0x220 mm/filemap.c:3668 read_mapping_page include/linux/pagemap.h:791 [inline] hfsplus_block_free+0x124/0x4d0 fs/hfsplus/bitmap.c:185 hfsplus_free_extents+0x17a/0xae0 fs/hfsplus/extents.c:363 hfsplus_file_truncate+0x868/0xc60 fs/hfsplus/extents.c:592 hfsplus_delete_inode+0x170/0x220 hfsplus_unlink+0x50d/0x7f0 fs/hfsplus/dir.c:405 vfs_unlink+0x359/0x5f0 fs/namei.c:4322 do_unlinkat+0x4a5/0x820 fs/namei.c:4390 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4426 [inline] __x64_sys_unlinkat+0xca/0xf0 fs/namei.c:4426 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa43a785d29 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:00007fa43b5c0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107 RAX: ffffffffffffffda RBX: 00007fa43a975fa0 RCX: 00007fa43a785d29 RDX: 0000000000000000 RSI: 0000000020000c40 RDI: ffffffffffffff9c RBP: 00007fa43a801aa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa43a975fa0 R15: 00007ffcb255bc98 hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent