====================================================== WARNING: possible circular locking dependency detected 6.11.0-rc1-syzkaller-00004-gdc1c8034e31b #0 Not tainted ------------------------------------------------------ syz.1.1274/10049 is trying to acquire lock: ffff88807896a1e0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline] ffff88807896a1e0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x3fe/0x580 fs/ext4/xattr.c:461 but task is already holding lock: ffff888078968c80 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x991/0x11a0 fs/ext4/inode.c:4213 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem/3){++++}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_write+0x99/0x220 kernel/locking/rwsem.c:1579 ext4_update_i_disksize fs/ext4/ext4.h:3395 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1452 [inline] ext4_xattr_inode_lookup_create+0x1707/0x1f90 fs/ext4/xattr.c:1602 ext4_xattr_ibody_set+0x214/0x730 fs/ext4/xattr.c:2269 ext4_xattr_set_handle+0xba6/0x1580 fs/ext4/xattr.c:2446 ext4_xattr_set+0x241/0x3d0 fs/ext4/xattr.c:2560 __vfs_setxattr+0x46a/0x4a0 fs/xattr.c:200 __vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234 vfs_setxattr+0x221/0x430 fs/xattr.c:321 do_setxattr fs/xattr.c:629 [inline] path_setxattr+0x37e/0x4d0 fs/xattr.c:658 __do_sys_setxattr fs/xattr.c:676 [inline] __se_sys_setxattr fs/xattr.c:672 [inline] __x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:672 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_write+0x99/0x220 kernel/locking/rwsem.c:1579 inode_lock include/linux/fs.h:799 [inline] ext4_xattr_inode_iget+0x3fe/0x580 fs/ext4/xattr.c:461 ext4_xattr_inode_get+0x167/0x490 fs/ext4/xattr.c:535 ext4_xattr_move_to_block fs/ext4/xattr.c:2642 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline] ext4_expand_extra_isize_ea+0xf21/0x1cf0 fs/ext4/xattr.c:2836 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5861 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5904 [inline] __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5982 ext4_ext_truncate+0x9f/0x2b0 fs/ext4/extents.c:4432 ext4_truncate+0xa18/0x11a0 fs/ext4/inode.c:4218 ext4_evict_inode+0x90f/0xf50 fs/ext4/inode.c:258 evict+0x2aa/0x630 fs/inode.c:669 __dentry_kill+0x20d/0x630 fs/dcache.c:610 dput+0x19f/0x2b0 fs/dcache.c:852 do_renameat2+0xda1/0x13f0 fs/namei.c:5125 __do_sys_renameat2 fs/namei.c:5157 [inline] __se_sys_renameat2 fs/namei.c:5154 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5154 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#8/1); lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#8/1); *** DEADLOCK *** 7 locks held by syz.1.1274/10049: #0: ffff88805b5c8420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88805b5c8730 (&type->s_vfs_rename_key#3){+.+.}-{3:3}, at: lock_rename fs/namei.c:3151 [inline] #1: ffff88805b5c8730 (&type->s_vfs_rename_key#3){+.+.}-{3:3}, at: do_renameat2+0x5cf/0x13f0 fs/namei.c:5058 #2: ffff888067a4a1e0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:834 [inline] #2: ffff888067a4a1e0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_two_directories+0x145/0x220 fs/namei.c:3117 #3: ffff8880789697e8 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:834 [inline] #3: ffff8880789697e8 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: lock_two_directories+0x16f/0x220 fs/namei.c:3118 #4: ffff88805b5c8610 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1675 [inline] #4: ffff88805b5c8610 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1858 [inline] #4: ffff88805b5c8610 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x2f4/0xf50 fs/ext4/inode.c:212 #5: ffff888078968c80 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x991/0x11a0 fs/ext4/inode.c:4213 #6: ffff888078968ac0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #6: ffff888078968ac0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5901 [inline] #6: ffff888078968ac0 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x491/0x880 fs/ext4/inode.c:5982 stack backtrace: CPU: 1 UID: 0 PID: 10049 Comm: syz.1.1274 Not tainted 6.11.0-rc1-syzkaller-00004-gdc1c8034e31b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2186 check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 down_write+0x99/0x220 kernel/locking/rwsem.c:1579 inode_lock include/linux/fs.h:799 [inline] ext4_xattr_inode_iget+0x3fe/0x580 fs/ext4/xattr.c:461 ext4_xattr_inode_get+0x167/0x490 fs/ext4/xattr.c:535 ext4_xattr_move_to_block fs/ext4/xattr.c:2642 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2744 [inline] ext4_expand_extra_isize_ea+0xf21/0x1cf0 fs/ext4/xattr.c:2836 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5861 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5904 [inline] __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5982 ext4_ext_truncate+0x9f/0x2b0 fs/ext4/extents.c:4432 ext4_truncate+0xa18/0x11a0 fs/ext4/inode.c:4218 ext4_evict_inode+0x90f/0xf50 fs/ext4/inode.c:258 evict+0x2aa/0x630 fs/inode.c:669 __dentry_kill+0x20d/0x630 fs/dcache.c:610 dput+0x19f/0x2b0 fs/dcache.c:852 do_renameat2+0xda1/0x13f0 fs/namei.c:5125 __do_sys_renameat2 fs/namei.c:5157 [inline] __se_sys_renameat2 fs/namei.c:5154 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5154 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8915377299 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8916062048 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f8915505f80 RCX: 00007f8915377299 RDX: 0000000000000007 RSI: 0000000020000080 RDI: 0000000000000008 RBP: 00007f89153e48e6 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8915505f80 R15: 00007ffcdbf38998