loop4: detected capacity change from 0 to 32768 JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.1.115-syzkaller #0 Not tainted ------------------------------------------------------ syz.4.1372/7475 is trying to acquire lock: ffff88807847c650 (sb_internal#5){.+.+}-{0:0}, at: ocfs2_setattr+0xd99/0x1f80 fs/ocfs2/file.c:1260 but task is already holding lock: ffff8880714e14a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_setattr+0xd87/0x1f80 fs/ocfs2/file.c:1259 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 ocfs2_try_remove_refcount_tree+0xb2/0x330 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0xa4b/0x1930 fs/ocfs2/xattr.c:3674 ocfs2_set_acl+0x4cb/0x570 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x252/0x3c0 fs/ocfs2/acl.c:285 set_posix_acl fs/posix_acl.c:1160 [inline] posix_acl_xattr_set+0x37b/0x3e0 fs/posix_acl.c:1189 __vfs_removexattr+0x3ce/0x410 fs/xattr.c:479 __vfs_removexattr_locked+0x1fe/0x410 fs/xattr.c:514 vfs_removexattr+0xff/0x2a0 fs/xattr.c:536 removexattr fs/xattr.c:878 [inline] path_removexattr+0x22a/0x320 fs/xattr.c:892 __do_sys_lremovexattr fs/xattr.c:912 [inline] __se_sys_lremovexattr fs/xattr.c:909 [inline] __x64_sys_lremovexattr+0x59/0x70 fs/xattr.c:909 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #3 (&oi->ip_xattr_sem){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x398/0x930 fs/ocfs2/acl.c:365 ocfs2_mknod+0x1f75/0x2e20 fs/ocfs2/namei.c:408 vfs_mknod+0x444/0x4d0 fs/namei.c:3985 do_mknodat+0x3f8/0x5a0 __do_sys_mknodat fs/namei.c:4063 [inline] __se_sys_mknodat fs/namei.c:4060 [inline] __x64_sys_mknodat+0xa5/0xc0 fs/namei.c:4060 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (jbd2_handle){++++}-{0:0}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 start_this_handle+0x1f71/0x21b0 fs/jbd2/transaction.c:463 jbd2__journal_start+0x2d1/0x5c0 fs/jbd2/transaction.c:520 jbd2_journal_start+0x25/0x30 fs/jbd2/transaction.c:559 ocfs2_start_trans+0x3c0/0x6f0 fs/ocfs2/journal.c:354 ocfs2_mknod+0x1638/0x2e20 fs/ocfs2/namei.c:359 vfs_mknod+0x444/0x4d0 fs/namei.c:3985 do_mknodat+0x3f8/0x5a0 __do_sys_mknodat fs/namei.c:4063 [inline] __se_sys_mknodat fs/namei.c:4060 [inline] __x64_sys_mknodat+0xa5/0xc0 fs/namei.c:4060 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3b5/0x6f0 fs/ocfs2/journal.c:352 ocfs2_mknod+0x1638/0x2e20 fs/ocfs2/namei.c:359 vfs_mknod+0x444/0x4d0 fs/namei.c:3985 do_mknodat+0x3f8/0x5a0 __do_sys_mknodat fs/namei.c:4063 [inline] __se_sys_mknodat fs/namei.c:4060 [inline] __x64_sys_mknodat+0xa5/0xc0 fs/namei.c:4060 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (sb_internal#5){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1891 [inline] sb_start_intwrite include/linux/fs.h:2013 [inline] ocfs2_start_trans+0x2b0/0x6f0 fs/ocfs2/journal.c:350 ocfs2_setattr+0xd99/0x1f80 fs/ocfs2/file.c:1260 notify_change+0xce3/0xfc0 fs/attr.c:499 chmod_common+0x2a7/0x4b0 fs/open.c:606 do_fchmodat fs/open.c:645 [inline] __do_sys_fchmodat fs/open.c:658 [inline] __se_sys_fchmodat fs/open.c:655 [inline] __x64_sys_fchmodat+0x117/0x1a0 fs/open.c:655 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: sb_internal#5 --> &oi->ip_xattr_sem --> &ocfs2_file_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_file_ip_alloc_sem_key); lock(&oi->ip_xattr_sem); lock(&ocfs2_file_ip_alloc_sem_key); lock(sb_internal#5); *** DEADLOCK *** 3 locks held by syz.4.1372/7475: #0: ffff88807847c460 (sb_writers#27){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393 #1: ffff8880714e1808 (&type->i_mutex_dir_key#24){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #1: ffff8880714e1808 (&type->i_mutex_dir_key#24){+.+.}-{3:3}, at: chmod_common+0x1b7/0x4b0 fs/open.c:600 #2: ffff8880714e14a0 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_setattr+0xd87/0x1f80 fs/ocfs2/file.c:1259 stack backtrace: CPU: 0 PID: 7475 Comm: syz.4.1372 Not tainted 6.1.115-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+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1891 [inline] sb_start_intwrite include/linux/fs.h:2013 [inline] ocfs2_start_trans+0x2b0/0x6f0 fs/ocfs2/journal.c:350 ocfs2_setattr+0xd99/0x1f80 fs/ocfs2/file.c:1260 notify_change+0xce3/0xfc0 fs/attr.c:499 chmod_common+0x2a7/0x4b0 fs/open.c:606 do_fchmodat fs/open.c:645 [inline] __do_sys_fchmodat fs/open.c:658 [inline] __se_sys_fchmodat fs/open.c:655 [inline] __x64_sys_fchmodat+0x117/0x1a0 fs/open.c:655 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f282ef7e719 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:00007f282fd55038 EFLAGS: 00000246 ORIG_RAX: 000000000000010c RAX: ffffffffffffffda RBX: 00007f282f135f80 RCX: 00007f282ef7e719 RDX: 00000000fffffed3 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 00007f282eff132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f282f135f80 R15: 00007ffd552cbbc8