WARNING: possible circular locking dependency detected 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0 Not tainted ------------------------------------------------------ syz-executor.0/7967 is trying to acquire lock: ffff88807d05e0b0 (&tree->tree_lock/2){+.+.}-{3:3}, at: hfsplus_find_init+0x195/0x200 fs/hfsplus/bfind.c:36 but task is already holding lock: ffff88807d05c0b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x1a7/0x200 fs/hfsplus/bfind.c:30 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&tree->tree_lock){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 hfsplus_file_truncate+0x886/0x9e0 fs/hfsplus/extents.c:595 hfsplus_delete_inode+0x18f/0x220 fs/hfsplus/inode.c:450 hfsplus_unlink+0x583/0x7f0 fs/hfsplus/dir.c:405 vfs_unlink+0x2fb/0x910 fs/namei.c:4335 do_unlinkat+0x5c0/0x750 fs/namei.c:4399 __do_sys_unlinkat fs/namei.c:4442 [inline] __se_sys_unlinkat fs/namei.c:4435 [inline] __x64_sys_unlinkat+0xc1/0x130 fs/namei.c:4435 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 hfsplus_get_block+0x277/0x9e0 fs/hfsplus/extents.c:260 block_read_full_folio+0x38f/0xa70 fs/buffer.c:2384 filemap_read_folio+0xe7/0x2c0 mm/filemap.c:2331 do_read_cache_folio+0x207/0x550 mm/filemap.c:3747 do_read_cache_page mm/filemap.c:3813 [inline] read_cache_page+0x5b/0x160 mm/filemap.c:3822 read_mapping_page include/linux/pagemap.h:888 [inline] __hfs_bnode_create+0x63e/0x870 fs/hfsplus/bnode.c:440 hfsplus_bnode_find+0x2c8/0xcb0 fs/hfsplus/bnode.c:486 hfsplus_brec_find+0x2b9/0x520 fs/hfsplus/bfind.c:183 hfsplus_find_attr+0xe6/0x190 fs/hfsplus/attributes.c:153 __hfsplus_getxattr+0x321/0x5f0 fs/hfsplus/xattr.c:522 hfsplus_getxattr+0x102/0x180 fs/hfsplus/xattr.c:590 hfsplus_security_getxattr+0x39/0x50 fs/hfsplus/xattr_security.c:20 vfs_getxattr_alloc+0x1be/0x340 fs/xattr.c:393 ima_read_xattr+0x38/0x60 security/integrity/ima/ima_appraise.c:229 process_measurement+0x1130/0x2100 security/integrity/ima/ima_main.c:340 ima_file_check+0xc1/0x110 security/integrity/ima/ima_main.c:559 security_file_post_open+0x6d/0xc0 security/security.c:2981 do_open fs/namei.c:3644 [inline] path_openat+0x17ad/0x2990 fs/namei.c:3799 do_filp_open+0x1dc/0x430 fs/namei.c:3826 do_sys_openat2+0x17a/0x1e0 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1432 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&tree->tree_lock/2){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 hfsplus_find_init+0x195/0x200 fs/hfsplus/bfind.c:36 hfsplus_attr_exists+0x103/0x200 fs/hfsplus/attributes.c:178 __hfsplus_setxattr+0x4c6/0x2180 fs/hfsplus/xattr.c:336 hfsplus_setxattr+0x10c/0x180 fs/hfsplus/xattr.c:434 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:234 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295 vfs_setxattr+0x146/0x350 fs/xattr.c:321 do_setxattr+0x146/0x170 fs/xattr.c:629 setxattr+0x15d/0x180 fs/xattr.c:652 path_setxattr+0x179/0x1e0 fs/xattr.c:671 __do_sys_setxattr fs/xattr.c:687 [inline] __se_sys_setxattr fs/xattr.c:683 [inline] __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:683 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &tree->tree_lock/2 --> &HFSPLUS_I(inode)->extents_lock --> &tree->tree_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); lock(&tree->tree_lock/2); *** DEADLOCK *** 3 locks held by syz-executor.0/7967: #0: ffff88806311a420 (sb_writers#16){.+.+}-{0:0}, at: path_setxattr+0xc3/0x1e0 fs/xattr.c:669 #1: ffff888060cfa4c0 (&sb->s_type->i_mutex_key#24){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline] #1: ffff888060cfa4c0 (&sb->s_type->i_mutex_key#24){+.+.}-{3:3}, at: vfs_setxattr+0x123/0x350 fs/xattr.c:320 #2: ffff88807d05c0b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x1a7/0x200 fs/hfsplus/bfind.c:30 stack backtrace: CPU: 0 PID: 7967 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 hfsplus_find_init+0x195/0x200 fs/hfsplus/bfind.c:36 hfsplus_attr_exists+0x103/0x200 fs/hfsplus/attributes.c:178 __hfsplus_setxattr+0x4c6/0x2180 fs/hfsplus/xattr.c:336 hfsplus_setxattr+0x10c/0x180 fs/hfsplus/xattr.c:434 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:200 __vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:234 __vfs_setxattr_locked+0x182/0x260 fs/xattr.c:295 vfs_setxattr+0x146/0x350 fs/xattr.c:321 do_setxattr+0x146/0x170 fs/xattr.c:629 setxattr+0x15d/0x180 fs/xattr.c:652 path_setxattr+0x179/0x1e0 fs/xattr.c:671 __do_sys_setxattr fs/xattr.c:687 [inline] __se_sys_setxattr fs/xattr.c:683 [inline] __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:683 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6c82e7dea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6c83ba90c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 00007f6c82fac050 RCX: 00007f6c82e7dea9 RDX: 0000000020000200 RSI: 00000000200001c0 RDI: 0000000020000000 RBP: 00007f6c82eca4a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000841 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f6c82fac050 R15: 00007fff13fa3f48