====================================================== WARNING: possible circular locking dependency detected 6.3.0-rc6-next-20230414-syzkaller-12018-gd3f2cd248191 #0 Not tainted ------------------------------------------------------ syz-executor.0/7093 is trying to acquire lock: ffff888036f0ada0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:806 [inline] ffff888036f0ada0 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0x68f/0x26c0 fs/ext4/inode.c:5411 but task is already holding lock: ffff888036f0ac00 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:761 [inline] ffff888036f0ac00 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:64 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}: down_write+0x92/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:761 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1524 [inline] ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1607 [inline] ext4_xattr_set_entry+0x2b19/0x39e0 fs/ext4/xattr.c:1736 ext4_xattr_block_set+0xcb7/0x3030 fs/ext4/xattr.c:2042 ext4_xattr_set_handle+0xd8a/0x1510 fs/ext4/xattr.c:2457 ext4_xattr_set+0x144/0x360 fs/ext4/xattr.c:2559 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:201 __vfs_setxattr_noperm+0x129/0x5f0 fs/xattr.c:235 __vfs_setxattr_locked+0x1d3/0x260 fs/xattr.c:296 vfs_setxattr+0x143/0x340 fs/xattr.c:322 do_setxattr+0x147/0x190 fs/xattr.c:630 setxattr+0x146/0x160 fs/xattr.c:653 path_setxattr+0x197/0x1c0 fs/xattr.c:672 __do_sys_setxattr fs/xattr.c:688 [inline] __se_sys_setxattr fs/xattr.c:684 [inline] __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:684 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (&ei->xattr_sem){++++}-{3:3}: down_write+0x92/0x200 kernel/locking/rwsem.c:1573 ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline] ext4_xattr_set_handle+0x160/0x1510 fs/ext4/xattr.c:2372 ext4_xattr_set+0x144/0x360 fs/ext4/xattr.c:2559 __vfs_setxattr+0x173/0x1e0 fs/xattr.c:201 __vfs_setxattr_noperm+0x129/0x5f0 fs/xattr.c:235 __vfs_setxattr_locked+0x1d3/0x260 fs/xattr.c:296 vfs_setxattr+0x143/0x340 fs/xattr.c:322 do_setxattr+0x147/0x190 fs/xattr.c:630 setxattr+0x146/0x160 fs/xattr.c:653 path_setxattr+0x197/0x1c0 fs/xattr.c:672 __do_sys_setxattr fs/xattr.c:688 [inline] __se_sys_setxattr fs/xattr.c:684 [inline] __x64_sys_setxattr+0xc4/0x160 fs/xattr.c:684 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #1 (jbd2_handle){++++}-{0:0}: start_this_handle+0xfe7/0x14e0 fs/jbd2/transaction.c:463 jbd2__journal_start+0x38a/0x6b0 fs/jbd2/transaction.c:520 __ext4_journal_start_sb+0x411/0x5d0 fs/ext4/ext4_jbd2.c:111 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_truncate+0x54f/0x1340 fs/ext4/inode.c:4178 ext4_setattr+0x1ac1/0x26c0 fs/ext4/inode.c:5488 notify_change+0xb2c/0x1180 fs/attr.c:483 do_truncate+0x143/0x200 fs/open.c:66 do_sys_ftruncate+0x53a/0x770 fs/open.c:194 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 (mapping.invalidate_lock){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3108 [inline] check_prevs_add kernel/locking/lockdep.c:3227 [inline] validate_chain kernel/locking/lockdep.c:3842 [inline] __lock_acquire+0x2f21/0x5df0 kernel/locking/lockdep.c:5074 lock_acquire.part.0+0x11c/0x370 kernel/locking/lockdep.c:5691 down_write+0x92/0x200 kernel/locking/rwsem.c:1573 filemap_invalidate_lock include/linux/fs.h:806 [inline] ext4_setattr+0x68f/0x26c0 fs/ext4/inode.c:5411 notify_change+0xb2c/0x1180 fs/attr.c:483 do_truncate+0x143/0x200 fs/open.c:66 handle_truncate fs/namei.c:3219 [inline] do_open fs/namei.c:3564 [inline] path_openat+0x2083/0x2750 fs/namei.c:3715 do_filp_open+0x1ba/0x410 fs/namei.c:3742 do_sys_openat2+0x16d/0x4c0 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_creat fs/open.c:1448 [inline] __se_sys_creat fs/open.c:1442 [inline] __x64_sys_creat+0xcd/0x120 fs/open.c:1442 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: mapping.invalidate_lock --> &ei->xattr_sem --> &ea_inode->i_rwsem#8/1 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ea_inode->i_rwsem#8/1); lock(&ei->xattr_sem); lock(&ea_inode->i_rwsem#8/1); lock(mapping.invalidate_lock); *** DEADLOCK *** 2 locks held by syz-executor.0/7093: #0: ffff88802923a460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3553 [inline] #0: ffff88802923a460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x19a4/0x2750 fs/namei.c:3715 #1: ffff888036f0ac00 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:761 [inline] #1: ffff888036f0ac00 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: do_truncate+0x131/0x200 fs/open.c:64 stack backtrace: CPU: 1 PID: 7093 Comm: syz-executor.0 Not tainted 6.3.0-rc6-next-20230414-syzkaller-12018-gd3f2cd248191 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2188 check_prev_add kernel/locking/lockdep.c:3108 [inline] check_prevs_add kernel/locking/lockdep.c:3227 [inline] validate_chain kernel/locking/lockdep.c:3842 [inline] __lock_acquire+0x2f21/0x5df0 kernel/locking/lockdep.c:5074 lock_acquire.part.0+0x11c/0x370 kernel/locking/lockdep.c:5691 down_write+0x92/0x200 kernel/locking/rwsem.c:1573 filemap_invalidate_lock include/linux/fs.h:806 [inline] ext4_setattr+0x68f/0x26c0 fs/ext4/inode.c:5411 notify_change+0xb2c/0x1180 fs/attr.c:483 do_truncate+0x143/0x200 fs/open.c:66 handle_truncate fs/namei.c:3219 [inline] do_open fs/namei.c:3564 [inline] path_openat+0x2083/0x2750 fs/namei.c:3715 do_filp_open+0x1ba/0x410 fs/namei.c:3742 do_sys_openat2+0x16d/0x4c0 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_creat fs/open.c:1448 [inline] __se_sys_creat fs/open.c:1442 [inline] __x64_sys_creat+0xcd/0x120 fs/open.c:1442 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7adb88c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f7adc5a2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f7adb9abf80 RCX: 00007f7adb88c169 RDX: 0000000000000000 RSI: 0000000000000028 RDI: 0000000020000000 RBP: 00007f7adb8e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce8d8b54f R14: 00007f7adc5a2300 R15: 0000000000022000