loop0: detected capacity change from 0 to 1024 ====================================================== WARNING: possible circular locking dependency detected 5.15.145-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor405/3500 is trying to acquire lock: ffff8880169b07c8 (&HFSPLUS_I(inode)->extents_lock){+.+.}-{3:3}, at: hfsplus_file_extend+0x1d2/0x1b10 fs/hfsplus/extents.c:457 but task is already holding lock: ffff8880784080b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x146/0x1c0 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&tree->tree_lock){+.+.}-{3:3}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 hfsplus_file_truncate+0x864/0xb80 fs/hfsplus/extents.c:595 hfsplus_setattr+0x1b9/0x280 fs/hfsplus/inode.c:267 notify_change+0xc6d/0xf50 fs/attr.c:505 do_truncate+0x21c/0x300 fs/open.c:65 handle_truncate fs/namei.c:3271 [inline] do_open fs/namei.c:3618 [inline] path_openat+0x28a0/0x2f20 fs/namei.c:3748 do_filp_open+0x21c/0x460 fs/namei.c:3775 do_sys_openat2+0x13b/0x500 fs/open.c:1211 __do_sys_openat2 fs/open.c:1266 [inline] __se_sys_openat2 fs/open.c:1246 [inline] __x64_sys_openat2+0x23f/0x290 fs/open.c:1246 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb -> #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+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 hfsplus_file_extend+0x1d2/0x1b10 fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0x101/0x4e0 fs/hfsplus/btree.c:357 hfsplus_rename_cat+0x1cf/0x1090 fs/hfsplus/catalog.c:456 hfsplus_rename+0x12a/0x1b0 fs/hfsplus/dir.c:552 vfs_rename+0xbfc/0xf90 fs/namei.c:4819 do_renameat2+0xd74/0x1660 fs/namei.c:4971 __do_sys_renameat2 fs/namei.c:5004 [inline] __se_sys_renameat2 fs/namei.c:5001 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5001 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); lock(&tree->tree_lock); lock(&HFSPLUS_I(inode)->extents_lock); *** DEADLOCK *** 4 locks held by syz-executor405/3500: #0: ffff88807a974460 (sb_writers#9){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377 #1: ffff8880169b1e00 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #1: ffff8880169b1e00 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: lock_rename fs/namei.c:3018 [inline] #1: ffff8880169b1e00 (&type->i_mutex_dir_key#6/1){+.+.}-{3:3}, at: do_renameat2+0x611/0x1660 fs/namei.c:4910 #2: ffff8880169b24c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock_nested include/linux/fs.h:822 [inline] #2: ffff8880169b24c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: lock_two_inodes+0xfc/0x180 fs/inode.c:1063 #3: ffff8880784080b0 (&tree->tree_lock){+.+.}-{3:3}, at: hfsplus_find_init+0x146/0x1c0 stack backtrace: CPU: 0 PID: 3500 Comm: syz-executor405 Not tainted 5.15.145-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2f8/0x3b0 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+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 hfsplus_file_extend+0x1d2/0x1b10 fs/hfsplus/extents.c:457 hfsplus_bmap_reserve+0x101/0x4e0 fs/hfsplus/btree.c:357 hfsplus_rename_cat+0x1cf/0x1090 fs/hfsplus/catalog.c:456 hfsplus_rename+0x12a/0x1b0 fs/hfsplus/dir.c:552 vfs_rename+0xbfc/0xf90 fs/namei.c:4819 do_renameat2+0xd74/0x1660 fs/namei.c:4971 __do_sys_renameat2 fs/namei.c:5004 [inline] __se_sys_renameat2 fs/namei.c:5001 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5001 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7ff22fb687b9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007ffdc55bee98 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007ff22fb687b9 RDX: 0000000000000007 RSI: 00000000200001c0 RDI: 0000000000000007 RBP: 00007ff22fbdc610 R08: 0000000000000000 R09: 00007ffdc55bf068