loop5: detected capacity change from 0 to 1024 ====================================================== WARNING: possible circular locking dependency detected 6.6.0-syzkaller-14263-gaea6bf908d73 #0 Not tainted ------------------------------------------------------ syz-executor897/5288 is trying to acquire lock: ffff8880272200b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x811/0xb40 fs/hfsplus/extents.c:595 but task is already holding lock: ffff8880259922c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x2da/0xb40 fs/hfsplus/extents.c:576 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747 hfsplus_file_extend+0x21b/0x1b70 fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0x105/0x4e0 fs/hfsplus/btree.c:358 hfsplus_rename_cat+0x1d0/0x1050 fs/hfsplus/catalog.c:456 hfsplus_rename+0x12e/0x1c0 fs/hfsplus/dir.c:552 vfs_rename+0xaba/0xde0 fs/namei.c:4844 do_renameat2+0xd5a/0x1390 fs/namei.c:4996 __do_sys_rename fs/namei.c:5042 [inline] __se_sys_rename fs/namei.c:5040 [inline] __x64_sys_rename+0x86/0x90 fs/namei.c:5040 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b -> #0 (&tree->tree_lock){+.+.}-{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:3868 [inline] __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747 hfsplus_file_truncate+0x811/0xb40 fs/hfsplus/extents.c:595 hfsplus_setattr+0x1bd/0x260 fs/hfsplus/inode.c:269 notify_change+0xb99/0xe60 fs/attr.c:499 do_truncate+0x220/0x300 fs/open.c:66 handle_truncate fs/namei.c:3280 [inline] do_open fs/namei.c:3626 [inline] path_openat+0x29dd/0x3280 fs/namei.c:3779 do_filp_open+0x234/0x490 fs/namei.c:3809 do_sys_openat2+0x13e/0x1d0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_creat fs/open.c:1531 [inline] __se_sys_creat fs/open.c:1525 [inline] __x64_sys_creat+0x123/0x160 fs/open.c:1525 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); *** DEADLOCK *** 3 locks held by syz-executor897/5288: #0: ffff8880275a2418 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:404 #1: ffff8880259924c0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline] #1: ffff8880259924c0 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: do_truncate+0x20c/0x300 fs/open.c:64 #2: ffff8880259922c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_truncate+0x2da/0xb40 fs/hfsplus/extents.c:576 stack backtrace: CPU: 1 PID: 5288 Comm: syz-executor897 Not tainted 6.6.0-syzkaller-14263-gaea6bf908d73 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 check_noncircular+0x375/0x4a0 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:3868 [inline] __lock_acquire+0x39ff/0x7f70 kernel/locking/lockdep.c:5136 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x136/0xd60 kernel/locking/mutex.c:747 hfsplus_file_truncate+0x811/0xb40 fs/hfsplus/extents.c:595 hfsplus_setattr+0x1bd/0x260 fs/hfsplus/inode.c:269 notify_change+0xb99/0xe60 fs/attr.c:499 do_truncate+0x220/0x300 fs/open.c:66 handle_truncate fs/namei.c:3280 [inline] do_open fs/namei.c:3626 [inline] path_openat+0x29dd/0x3280 fs/namei.c:3779 do_filp_open+0x234/0x490 fs/namei.c:3809 do_sys_openat2+0x13e/0x1d0 fs/open.c:1440 do_sys_open fs/open.c:1455 [inline] __do_sys_creat fs/open.c:1531 [inline] __se_sys_creat fs/open.c:1525 [inline] __x64_sys_creat+0x123/0x160 fs/open.c:1525 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f1b3f72f3d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffecf536f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f1b3f72f3d9 RDX: 00007f1b3f72e570 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 0073756c70736668 R08: 000000000000069b R09: 00007ffecf536f70 R10: 00007ffecf536e00 R11: 0000000000000246 R12: 00007ffecf536f5c R13: 000000000000001f R14: 431bde82d7b634db R15: 00007ffecf536f90