============================================ WARNING: possible recursive locking detected 5.15.189-syzkaller #0 Not tainted -------------------------------------------- syz.3.575/6136 is trying to acquire lock: ffff888059bc1548 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x39b/0x1530 fs/hfsplus/extents.c:260 but task is already holding lock: ffff888059bc3708 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x2a0/0xb40 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 9 locks held by syz.3.575/6136: #0: ffff88807a848460 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:377 #1: ffff88807a848748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename fs/namei.c:3016 [inline] #1: ffff88807a848748 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: do_renameat2+0x362/0xf70 fs/namei.c:4924 #2: ffff888059bc1e00 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #2: ffff888059bc1e00 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: lock_two_directories fs/namei.c:-1 [inline] #2: ffff888059bc1e00 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3017 [inline] #2: ffff888059bc1e00 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: do_renameat2+0x3f4/0xf70 fs/namei.c:4924 #3: ffff888059bc2b80 (&type->i_mutex_dir_key#14/5){+.+.}-{3:3}, at: lock_rename include/linux/fs.h:-1 [inline] #3: ffff888059bc2b80 (&type->i_mutex_dir_key#14/5){+.+.}-{3:3}, at: do_renameat2+0x42a/0xf70 fs/namei.c:4924 #4: ffff888059bc3240 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #4: ffff888059bc3240 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: lock_two_nondirectories+0xd5/0x150 fs/inode.c:1147 #5: ffff888059bc3900 (&sb->s_type->i_mutex_key#30/4){+.+.}-{3:3}, at: vfs_rename+0x7dc/0x10d0 fs/namei.c:4803 #6: ffff888024cb5998 (&sbi->vh_mutex){+.+.}-{3:3}, at: hfsplus_unlink+0x15a/0x760 fs/hfsplus/dir.c:370 #7: ffff888059bc3708 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x2a0/0xb40 fs/hfsplus/extents.c:577 #8: ffff888024cb58f8 (&sbi->alloc_mutex){+.+.}-{3:3}, at: hfsplus_block_free+0xc1/0x4d0 fs/hfsplus/bitmap.c:182 stack backtrace: CPU: 1 PID: 6136 Comm: syz.3.575 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 __lock_acquire+0x1227/0x7c60 kernel/locking/lockdep.c:-1 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1eb/0x2390 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 hfsplus_get_block+0x39b/0x1530 fs/hfsplus/extents.c:260 block_read_full_page+0x2e8/0xd10 fs/buffer.c:2290 do_read_cache_page+0x8a1/0x1030 mm/filemap.c:-1 read_mapping_page include/linux/pagemap.h:515 [inline] hfsplus_block_free+0x125/0x4d0 fs/hfsplus/bitmap.c:185 hfsplus_free_extents+0x176/0xac0 fs/hfsplus/extents.c:363 hfsplus_file_truncate+0x745/0xb40 fs/hfsplus/extents.c:592 hfsplus_delete_inode+0x17c/0x230 fs/hfsplus/inode.c:-1 hfsplus_unlink+0x4c0/0x760 fs/hfsplus/dir.c:405 hfsplus_rename+0xc7/0x1b0 fs/hfsplus/dir.c:547 vfs_rename+0xbbf/0x10d0 fs/namei.c:4832 do_renameat2+0xa83/0xf70 fs/namei.c:4985 __do_sys_rename fs/namei.c:5031 [inline] __se_sys_rename fs/namei.c:5029 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:5029 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb34a7a09a9 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:00007fb3485c6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007fb34a9c8160 RCX: 00007fb34a7a09a9 RDX: 0000000000000000 RSI: 00002000000001c0 RDI: 0000200000001980 RBP: 00007fb34a822d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb34a9c8160 R15: 00007ffca4697a68 hfsplus: unable to mark blocks free: error -5 hfsplus: can't free extent