hfsplus: inconsistency in B*Tree (1792,1,255,1,0) hfsplus: xattr searching failed hfsplus: inconsistency in B*Tree (1792,1,255,1,0) ====================================================== WARNING: possible circular locking dependency detected 6.1.74-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor161/4234 is trying to acquire lock: ffff0000cfce0e88 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x198/0x14cc fs/hfsplus/extents.c:457 but task is already holding lock: ffff0000cfd260b0 (&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+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hfsplus_find_init+0x144/0x1bc hfsplus_attr_exists+0xf8/0x1c8 fs/hfsplus/attributes.c:178 __hfsplus_setxattr+0x384/0x1d10 fs/hfsplus/xattr.c:336 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_trusted_setxattr+0x54/0x6c fs/hfsplus/xattr_trusted.c:30 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x230/0x294 fs/xattr.c:617 path_setxattr+0x17c/0x258 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:655 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #1 (&tree->tree_lock){+.+.}-{3:3}: __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hfsplus_file_truncate+0x6d0/0x9b8 fs/hfsplus/extents.c:595 hfsplus_setattr+0x18c/0x25c fs/hfsplus/inode.c:269 notify_change+0xb58/0xe1c fs/attr.c:499 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3293 [inline] do_open fs/namei.c:3638 [inline] path_openat+0x1fa0/0x2548 fs/namei.c:3791 do_filp_open+0x1bc/0x3cc fs/namei.c:3818 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #0 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hfsplus_file_extend+0x198/0x14cc fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0xec/0x474 fs/hfsplus/btree.c:358 hfsplus_create_attr+0x1b0/0x568 fs/hfsplus/attributes.c:221 __hfsplus_setxattr+0x990/0x1d10 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_trusted_setxattr+0x54/0x6c fs/hfsplus/xattr_trusted.c:30 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x230/0x294 fs/xattr.c:617 path_setxattr+0x17c/0x258 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:655 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 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 *** 4 locks held by syz-executor161/4234: #0: ffff0000cfd20460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:393 #1: ffff0000cfce24c0 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #1: ffff0000cfce24c0 (&sb->s_type->i_mutex_key#17){+.+.}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:308 #2: ffff0000cfd240b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x144/0x1bc #3: ffff0000cfd260b0 (&tree->tree_lock/2){+.+.}-{3:3}, at: hfsplus_find_init+0x144/0x1bc stack backtrace: CPU: 0 PID: 4234 Comm: syz-executor161 Not tainted 6.1.74-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __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:2048 check_noncircular+0x2cc/0x378 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hfsplus_file_extend+0x198/0x14cc fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0xec/0x474 fs/hfsplus/btree.c:358 hfsplus_create_attr+0x1b0/0x568 fs/hfsplus/attributes.c:221 __hfsplus_setxattr+0x990/0x1d10 fs/hfsplus/xattr.c:354 hfsplus_setxattr+0xb4/0xec fs/hfsplus/xattr.c:434 hfsplus_trusted_setxattr+0x54/0x6c fs/hfsplus/xattr_trusted.c:30 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:309 do_setxattr fs/xattr.c:594 [inline] setxattr+0x230/0x294 fs/xattr.c:617 path_setxattr+0x17c/0x258 fs/xattr.c:636 __do_sys_lsetxattr fs/xattr.c:659 [inline] __se_sys_lsetxattr fs/xattr.c:655 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:655 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 hfsplus: inconsistency in B*Tree (2,0,1,0,1)