loop0: detected capacity change from 0 to 1024 EXT4-fs: Ignoring removed orlov option EXT4-fs: Ignoring removed nomblk_io_submit option ====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc4-next-20241024-syzkaller-gfd21fa4a912e #0 Not tainted ------------------------------------------------------ syz.0.58/6270 is trying to acquire lock: ffff88805f4da1b0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:816 [inline] ffff88805f4da1b0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_create fs/ext4/xattr.c:1514 [inline] ffff88805f4da1b0 (&ea_inode->i_rwsem#8/1){+.+.}-{3:3}, at: ext4_xattr_inode_lookup_create+0x1a31/0x1f20 fs/ext4/xattr.c:1596 but task is already holding lock: ffff888073d21658 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x994/0x11c0 fs/ext4/inode.c:4180 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:5825 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 ext4_update_i_disksize fs/ext4/ext4.h:3398 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1452 [inline] ext4_xattr_inode_lookup_create+0x16b8/0x1f20 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+0x280/0x3e0 fs/ext4/xattr.c:2560 __vfs_setxattr+0x468/0x4a0 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:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:816 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1514 [inline] ext4_xattr_inode_lookup_create+0x1a31/0x1f20 fs/ext4/xattr.c:1596 ext4_xattr_block_set+0x274/0x3980 fs/ext4/xattr.c:1916 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline] ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline] __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952 ext4_ext_truncate+0x9f/0x2b0 fs/ext4/extents.c:4457 ext4_truncate+0xa1b/0x11c0 fs/ext4/inode.c:4185 ext4_evict_inode+0x90f/0xf50 fs/ext4/inode.c:263 evict+0x4e8/0x9b0 fs/inode.c:794 __dentry_kill+0x20d/0x630 fs/dcache.c:625 dput+0x19f/0x2b0 fs/dcache.c:867 do_renameat2+0xda1/0x13f0 fs/namei.c:5172 __do_sys_renameat2 fs/namei.c:5204 [inline] __se_sys_renameat2 fs/namei.c:5201 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5201 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.0.58/6270: #0: ffff88802e58e420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff88802e58e730 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: lock_rename fs/namei.c:3165 [inline] #1: ffff88802e58e730 (&type->s_vfs_rename_key){+.+.}-{3:3}, at: do_renameat2+0x5cf/0x13f0 fs/namei.c:5105 #2: ffff888076ff3f68 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:851 [inline] #2: ffff888076ff3f68 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: lock_two_directories+0x145/0x220 fs/namei.c:3131 #3: ffff888076ff2b98 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:851 [inline] #3: ffff888076ff2b98 (&type->i_mutex_dir_key#3/5){+.+.}-{3:3}, at: lock_two_directories+0x16f/0x220 fs/namei.c:3132 #4: ffff88802e58e610 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1723 [inline] #4: ffff88802e58e610 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1906 [inline] #4: ffff88802e58e610 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x2f4/0xf50 fs/ext4/inode.c:217 #5: ffff888073d21658 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_truncate+0x994/0x11c0 fs/ext4/inode.c:4180 #6: ffff888073d21498 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:161 [inline] #6: ffff888073d21498 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5871 [inline] #6: ffff888073d21498 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x491/0x880 fs/ext4/inode.c:5952 stack backtrace: CPU: 0 UID: 0 PID: 6270 Comm: syz.0.58 Not tainted 6.12.0-rc4-next-20241024-syzkaller-gfd21fa4a912e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:816 [inline] ext4_xattr_inode_create fs/ext4/xattr.c:1514 [inline] ext4_xattr_inode_lookup_create+0x1a31/0x1f20 fs/ext4/xattr.c:1596 ext4_xattr_block_set+0x274/0x3980 fs/ext4/xattr.c:1916 ext4_xattr_move_to_block fs/ext4/xattr.c:2670 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2745 [inline] ext4_expand_extra_isize_ea+0x12d7/0x1cf0 fs/ext4/xattr.c:2837 __ext4_expand_extra_isize+0x2fb/0x3e0 fs/ext4/inode.c:5831 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5874 [inline] __ext4_mark_inode_dirty+0x524/0x880 fs/ext4/inode.c:5952 ext4_ext_truncate+0x9f/0x2b0 fs/ext4/extents.c:4457 ext4_truncate+0xa1b/0x11c0 fs/ext4/inode.c:4185 ext4_evict_inode+0x90f/0xf50 fs/ext4/inode.c:263 evict+0x4e8/0x9b0 fs/inode.c:794 __dentry_kill+0x20d/0x630 fs/dcache.c:625 dput+0x19f/0x2b0 fs/dcache.c:867 do_renameat2+0xda1/0x13f0 fs/namei.c:5172 __do_sys_renameat2 fs/namei.c:5204 [inline] __se_sys_renameat2 fs/namei.c:5201 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5201 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: 0033:0x7fd09a17def9 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:00007fd099bff038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007fd09a335f80 RCX: 00007fd09a17def9 RDX: 0000000000000005 RSI: 0000000020000080 RDI: 0000000000000006 RBP: 00007fd09a1f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd09a335f80 R15: 00007ffca5892ee8