EXT4-fs: Ignoring removed orlov option EXT4-fs: Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 without journal. Quota mode: none. ====================================================== WARNING: possible circular locking dependency detected 6.2.0-rc5-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.15/2784 is trying to acquire lock: ffff8881142b5938 (&ea_inode->i_rwsem#7/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] ffff8881142b5938 (&ea_inode->i_rwsem#7/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x17e/0x1a0 fs/ext4/xattr.c:463 but task is already holding lock: ffff8881142b4e48 (&ei->i_data_sem){++++}-{3:3}, at: ext4_truncate+0x3e2/0x520 fs/ext4/inode.c:4337 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem){++++}-{3:3}: down_write+0x2a/0xc0 kernel/locking/rwsem.c:1562 ext4_update_i_disksize fs/ext4/ext4.h:3383 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1451 [inline] ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1593 [inline] ext4_xattr_set_entry+0xc32/0x1130 fs/ext4/xattr.c:1718 ext4_xattr_ibody_set+0x57/0xb0 fs/ext4/xattr.c:2270 ext4_xattr_set_handle+0x435/0x6b0 fs/ext4/xattr.c:2427 ext4_xattr_set+0xf3/0x180 fs/ext4/xattr.c:2541 __vfs_setxattr+0x156/0x170 fs/xattr.c:202 __vfs_setxattr_noperm+0x92/0x1f0 fs/xattr.c:236 vfs_setxattr+0xe2/0x170 fs/xattr.c:323 do_setxattr fs/xattr.c:608 [inline] setxattr+0x114/0x170 fs/xattr.c:631 path_setxattr+0xab/0x120 fs/xattr.c:650 __do_sys_setxattr fs/xattr.c:666 [inline] __se_sys_setxattr fs/xattr.c:662 [inline] __x64_sys_setxattr+0x26/0x30 fs/xattr.c:662 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x46/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x73/0xdd -> #0 (&ea_inode->i_rwsem#7/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3097 [inline] check_prevs_add kernel/locking/lockdep.c:3216 [inline] validate_chain kernel/locking/lockdep.c:3831 [inline] __lock_acquire+0x1265/0x25c0 kernel/locking/lockdep.c:5055 lock_acquire+0x10a/0x2e0 kernel/locking/lockdep.c:5668 down_write+0x2a/0xc0 kernel/locking/rwsem.c:1562 inode_lock include/linux/fs.h:756 [inline] ext4_xattr_inode_iget+0x17e/0x1a0 fs/ext4/xattr.c:463 ext4_xattr_inode_get+0x4d/0x140 fs/ext4/xattr.c:539 ext4_xattr_move_to_block fs/ext4/xattr.c:2622 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2724 [inline] ext4_expand_extra_isize_ea+0x46f/0x880 fs/ext4/xattr.c:2816 __ext4_expand_extra_isize+0xbc/0x140 fs/ext4/inode.c:5957 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6000 [inline] __ext4_mark_inode_dirty+0x1a6/0x2a0 fs/ext4/inode.c:6078 ext4_ext_truncate+0x2b/0xd0 fs/ext4/extents.c:4400 ext4_truncate+0x419/0x520 fs/ext4/inode.c:4342 ext4_evict_inode+0x4a7/0x5f0 fs/ext4/inode.c:286 evict+0xd1/0x2a0 fs/inode.c:664 __dentry_kill+0x122/0x1d0 fs/dcache.c:607 dentry_kill+0x62/0x120 dput+0xca/0x170 fs/dcache.c:913 do_renameat2+0x464/0x600 fs/namei.c:4932 __do_sys_renameat2 fs/namei.c:4963 [inline] __se_sys_renameat2 fs/namei.c:4960 [inline] __x64_sys_renameat2+0x4f/0x60 fs/namei.c:4960 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x46/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x73/0xdd other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem); lock(&ea_inode->i_rwsem#7/1); lock(&ei->i_data_sem); lock(&ea_inode->i_rwsem#7/1); *** DEADLOCK *** 7 locks held by syz.0.15/2784: #0: ffff8881062d8438 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x12/0x40 fs/namespace.c:508 #1: ffff8881062d8720 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename+0x29/0xd0 fs/namei.c:2994 #2: ffff8881142b3cd0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline] #2: ffff8881142b3cd0 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_rename+0x53/0xd0 fs/namei.c:2998 #3: ffff8881142b4648 (&type->i_mutex_dir_key#3/2){+.+.}-{3:3}, at: lock_rename+0xa4/0xd0 #4: ffff8881062d8628 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1814 [inline] #4: ffff8881062d8628 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1936 [inline] #4: ffff8881062d8628 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x177/0x5f0 fs/ext4/inode.c:240 #5: ffff8881142b4e48 (&ei->i_data_sem){++++}-{3:3}, at: ext4_truncate+0x3e2/0x520 fs/ext4/inode.c:4337 #6: ffff8881142b4c88 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #6: ffff8881142b4c88 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5997 [inline] #6: ffff8881142b4c88 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x170/0x2a0 fs/ext4/inode.c:6078 stack backtrace: CPU: 0 PID: 2784 Comm: syz.0.15 Not tainted 6.2.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8d/0xe0 lib/dump_stack.c:106 check_noncircular+0x10c/0x120 kernel/locking/lockdep.c:2177 check_prev_add kernel/locking/lockdep.c:3097 [inline] check_prevs_add kernel/locking/lockdep.c:3216 [inline] validate_chain kernel/locking/lockdep.c:3831 [inline] __lock_acquire+0x1265/0x25c0 kernel/locking/lockdep.c:5055 lock_acquire+0x10a/0x2e0 kernel/locking/lockdep.c:5668 down_write+0x2a/0xc0 kernel/locking/rwsem.c:1562 inode_lock include/linux/fs.h:756 [inline] ext4_xattr_inode_iget+0x17e/0x1a0 fs/ext4/xattr.c:463 ext4_xattr_inode_get+0x4d/0x140 fs/ext4/xattr.c:539 ext4_xattr_move_to_block fs/ext4/xattr.c:2622 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2724 [inline] ext4_expand_extra_isize_ea+0x46f/0x880 fs/ext4/xattr.c:2816 __ext4_expand_extra_isize+0xbc/0x140 fs/ext4/inode.c:5957 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6000 [inline] __ext4_mark_inode_dirty+0x1a6/0x2a0 fs/ext4/inode.c:6078 ext4_ext_truncate+0x2b/0xd0 fs/ext4/extents.c:4400 ext4_truncate+0x419/0x520 fs/ext4/inode.c:4342 ext4_evict_inode+0x4a7/0x5f0 fs/ext4/inode.c:286 evict+0xd1/0x2a0 fs/inode.c:664 __dentry_kill+0x122/0x1d0 fs/dcache.c:607 dentry_kill+0x62/0x120 dput+0xca/0x170 fs/dcache.c:913 do_renameat2+0x464/0x600 fs/namei.c:4932 __do_sys_renameat2 fs/namei.c:4963 [inline] __se_sys_renameat2 fs/namei.c:4960 [inline] __x64_sys_renameat2+0x4f/0x60 fs/namei.c:4960 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x46/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x73/0xdd RIP: 0033:0x7fa9bdd8bef9 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:00007fa9bd80d038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007fa9bdf43f80 RCX: 00007fa9bdd8bef9 RDX: 0000000000000005 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 00007fa9bddfeb76 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa9bdf43f80 R15: 00007ffe7f34d7a8