====================================================== WARNING: possible circular locking dependency detected 5.15.131-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/17632 is trying to acquire lock: ffff00012b87abd0 (&ea_inode->i_rwsem#9/1){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] ffff00012b87abd0 (&ea_inode->i_rwsem#9/1){+.+.}-{3:3}, at: ext4_xattr_inode_iget+0x350/0x4f4 fs/ext4/xattr.c:425 but task is already holding lock: ffff00012b87d238 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xea8/0x1440 fs/ext4/inode.c:5499 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ei->i_data_sem/3){++++}-{3:3}: down_write+0x110/0x260 kernel/locking/rwsem.c:1541 ext4_update_i_disksize fs/ext4/ext4.h:3399 [inline] ext4_xattr_inode_write fs/ext4/xattr.c:1397 [inline] ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1545 [inline] ext4_xattr_set_entry+0x26d0/0x3094 fs/ext4/xattr.c:1669 ext4_xattr_ibody_set+0x104/0x35c fs/ext4/xattr.c:2237 ext4_xattr_set_handle+0xa08/0x12d8 fs/ext4/xattr.c:2394 __ext4_set_acl+0x438/0x528 fs/ext4/acl.c:217 ext4_set_acl+0x304/0x624 fs/ext4/acl.c:258 set_posix_acl fs/posix_acl.c:947 [inline] posix_acl_xattr_set+0x2cc/0x378 fs/posix_acl.c:966 __vfs_setxattr+0x388/0x3a4 fs/xattr.c:182 __vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:216 __vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:277 vfs_setxattr+0x1a8/0x344 fs/xattr.c:303 do_setxattr fs/xattr.c:588 [inline] setxattr+0x250/0x2b4 fs/xattr.c:611 path_setxattr+0x17c/0x258 fs/xattr.c:630 __do_sys_lsetxattr fs/xattr.c:653 [inline] __se_sys_lsetxattr fs/xattr.c:649 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:649 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&ea_inode->i_rwsem#9/1){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3787 [inline] __lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 down_write+0x110/0x260 kernel/locking/rwsem.c:1541 inode_lock include/linux/fs.h:787 [inline] ext4_xattr_inode_iget+0x350/0x4f4 fs/ext4/xattr.c:425 ext4_xattr_inode_get+0x148/0x674 fs/ext4/xattr.c:485 ext4_xattr_move_to_block fs/ext4/xattr.c:2589 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline] ext4_expand_extra_isize_ea+0xb9c/0x169c fs/ext4/xattr.c:2783 __ext4_expand_extra_isize+0x290/0x348 fs/ext4/inode.c:5840 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5883 [inline] __ext4_mark_inode_dirty+0x4e8/0x924 fs/ext4/inode.c:5961 ext4_setattr+0xf10/0x1440 fs/ext4/inode.c:5502 notify_change+0xac4/0xd60 fs/attr.c:489 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3195 [inline] do_open fs/namei.c:3542 [inline] path_openat+0x20e8/0x26f0 fs/namei.c:3672 do_filp_open+0x1a8/0x3b4 fs/namei.c:3699 do_sys_openat2+0x128/0x3d8 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1238 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 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#9/1); lock(&ei->i_data_sem/3); lock(&ea_inode->i_rwsem#9/1); *** DEADLOCK *** 5 locks held by syz-executor.3/17632: #0: ffff000127552460 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377 #1: ffff00012b87d3b0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff00012b87d3b0 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63 #2: ffff00012b87d550 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline] #2: ffff00012b87d550 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0xa74/0x1440 fs/ext4/inode.c:5459 #3: ffff00012b87d238 (&ei->i_data_sem/3){++++}-{3:3}, at: ext4_setattr+0xea8/0x1440 fs/ext4/inode.c:5499 #4: ffff00012b87d088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline] #4: ffff00012b87d088 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5880 [inline] #4: ffff00012b87d088 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x468/0x924 fs/ext4/inode.c:5961 stack backtrace: CPU: 0 PID: 17632 Comm: syz-executor.3 Not tainted 5.15.131-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2011 check_noncircular+0x2cc/0x378 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 kernel/locking/lockdep.c:3787 [inline] __lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 down_write+0x110/0x260 kernel/locking/rwsem.c:1541 inode_lock include/linux/fs.h:787 [inline] ext4_xattr_inode_iget+0x350/0x4f4 fs/ext4/xattr.c:425 ext4_xattr_inode_get+0x148/0x674 fs/ext4/xattr.c:485 ext4_xattr_move_to_block fs/ext4/xattr.c:2589 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2691 [inline] ext4_expand_extra_isize_ea+0xb9c/0x169c fs/ext4/xattr.c:2783 __ext4_expand_extra_isize+0x290/0x348 fs/ext4/inode.c:5840 ext4_try_to_expand_extra_isize fs/ext4/inode.c:5883 [inline] __ext4_mark_inode_dirty+0x4e8/0x924 fs/ext4/inode.c:5961 ext4_setattr+0xf10/0x1440 fs/ext4/inode.c:5502 notify_change+0xac4/0xd60 fs/attr.c:489 do_truncate+0x1c0/0x28c fs/open.c:65 handle_truncate fs/namei.c:3195 [inline] do_open fs/namei.c:3542 [inline] path_openat+0x20e8/0x26f0 fs/namei.c:3672 do_filp_open+0x1a8/0x3b4 fs/namei.c:3699 do_sys_openat2+0x128/0x3d8 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1238 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584