====================================================== WARNING: possible circular locking dependency detected 5.15.164-syzkaller #0 Not tainted ------------------------------------------------------ syz.1.467/5582 is trying to acquire lock: ffff0000d18ab048 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260 but task is already holding lock: ffff0000d97d40b0 (&tree->tree_lock/2){+.+.}-{3:3}, at: hfsplus_find_init+0x144/0x1bc which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&tree->tree_lock/2){+.+.}-{3:3}: __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 hfsplus_find_init+0x144/0x1bc hfsplus_delete_all_attrs+0xfc/0x348 fs/hfsplus/attributes.c:366 hfsplus_delete_cat+0x9a4/0xd6c fs/hfsplus/catalog.c:425 hfsplus_unlink+0x2c0/0x6a0 fs/hfsplus/dir.c:385 vfs_unlink+0x2f0/0x508 fs/namei.c:4280 do_unlinkat+0x4cc/0x830 fs/namei.c:4348 __do_sys_unlinkat fs/namei.c:4391 [inline] __se_sys_unlinkat fs/namei.c:4384 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4384 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&tree->tree_lock){+.+.}-{3:3}: __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 hfsplus_file_truncate+0x6d4/0x9cc fs/hfsplus/extents.c:595 hfsplus_delete_inode+0x154/0x200 hfsplus_unlink+0x414/0x6a0 fs/hfsplus/dir.c:405 vfs_unlink+0x2f0/0x508 fs/namei.c:4280 do_unlinkat+0x4cc/0x830 fs/namei.c:4348 __do_sys_unlinkat fs/namei.c:4391 [inline] __se_sys_unlinkat fs/namei.c:4384 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4384 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x32d4/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260 block_read_full_page+0x2a0/0xc4c fs/buffer.c:2290 hfsplus_readpage+0x28/0x38 fs/hfsplus/inode.c:28 do_read_cache_page+0x60c/0x950 read_cache_page+0x68/0x84 mm/filemap.c:3574 read_mapping_page include/linux/pagemap.h:515 [inline] __hfs_bnode_create+0x3f0/0x864 fs/hfsplus/bnode.c:447 hfsplus_bnode_find+0x200/0xcb0 fs/hfsplus/bnode.c:497 hfsplus_brec_find+0x134/0x4a0 fs/hfsplus/bfind.c:183 hfsplus_find_attr+0x1e0/0x33c __hfsplus_getxattr+0x2b8/0x870 fs/hfsplus/xattr.c:522 hfsplus_getxattr+0xac/0xe4 fs/hfsplus/xattr.c:590 hfsplus_security_getxattr+0x48/0x5c fs/hfsplus/xattr_security.c:20 __vfs_getxattr+0x34c/0x368 fs/xattr.c:401 cap_inode_need_killpriv+0x50/0x78 security/commoncap.c:301 security_inode_need_killpriv+0x6c/0xa4 security/security.c:1423 dentry_needs_remove_privs+0x94/0x108 fs/inode.c:1925 do_truncate+0x138/0x28c fs/open.c:57 do_sys_ftruncate+0x288/0x31c fs/open.c:193 __do_sys_ftruncate fs/open.c:204 [inline] __se_sys_ftruncate fs/open.c:202 [inline] __arm64_sys_ftruncate+0x60/0x74 fs/open.c:202 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Chain exists of: &HFSPLUS_I(inode)->extents_lock --> &tree->tree_lock --> &tree->tree_lock/2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&tree->tree_lock/2); lock(&tree->tree_lock); lock(&tree->tree_lock/2); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** 2 locks held by syz.1.467/5582: #0: ffff0000da600460 (sb_writers#15){.+.+}-{0:0}, at: do_sys_ftruncate+0x214/0x31c fs/open.c:190 #1: ffff0000d97d40b0 (&tree->tree_lock/2){+.+.}-{3:3}, at: hfsplus_find_init+0x144/0x1bc stack backtrace: CPU: 1 PID: 5582 Comm: syz.1.467 Not tainted 5.15.164-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2011 check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x32d4/0x7638 kernel/locking/lockdep.c:5012 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5623 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 hfsplus_get_block+0x2c4/0x1194 fs/hfsplus/extents.c:260 block_read_full_page+0x2a0/0xc4c fs/buffer.c:2290 hfsplus_readpage+0x28/0x38 fs/hfsplus/inode.c:28 do_read_cache_page+0x60c/0x950 read_cache_page+0x68/0x84 mm/filemap.c:3574 read_mapping_page include/linux/pagemap.h:515 [inline] __hfs_bnode_create+0x3f0/0x864 fs/hfsplus/bnode.c:447 hfsplus_bnode_find+0x200/0xcb0 fs/hfsplus/bnode.c:497 hfsplus_brec_find+0x134/0x4a0 fs/hfsplus/bfind.c:183 hfsplus_find_attr+0x1e0/0x33c __hfsplus_getxattr+0x2b8/0x870 fs/hfsplus/xattr.c:522 hfsplus_getxattr+0xac/0xe4 fs/hfsplus/xattr.c:590 hfsplus_security_getxattr+0x48/0x5c fs/hfsplus/xattr_security.c:20 __vfs_getxattr+0x34c/0x368 fs/xattr.c:401 cap_inode_need_killpriv+0x50/0x78 security/commoncap.c:301 security_inode_need_killpriv+0x6c/0xa4 security/security.c:1423 dentry_needs_remove_privs+0x94/0x108 fs/inode.c:1925 do_truncate+0x138/0x28c fs/open.c:57 do_sys_ftruncate+0x288/0x31c fs/open.c:193 __do_sys_ftruncate fs/open.c:204 [inline] __se_sys_ftruncate fs/open.c:202 [inline] __arm64_sys_ftruncate+0x60/0x74 fs/open.c:202 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 hfsplus: xattr searching failed