======================================================= ocfs2: Slot 0 on device (7,0) was already allocated to this node! ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.0.17/5930 is trying to acquire lock: ffff888026c50608 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_setattr+0xc72/0x1bc0 fs/ocfs2/file.c:1262 but task is already holding lock: ffff88806164ea20 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_setattr+0xc63/0x1bc0 fs/ocfs2/file.c:1261 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&oi->ip_alloc_sem){+.+.}-{3:3}: down_write+0x97/0x200 kernel/locking/rwsem.c:1573 ocfs2_try_remove_refcount_tree+0xb7/0x340 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x61b/0x13e0 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x4e1/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x1b2/0x2b0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:956 [inline] vfs_remove_acl+0x4e3/0x740 fs/posix_acl.c:1243 ovl_do_remove_acl fs/overlayfs/overlayfs.h:337 [inline] ovl_workdir_create+0x3db/0x6d0 fs/overlayfs/super.c:340 ovl_make_workdir fs/overlayfs/super.c:716 [inline] ovl_get_workdir+0x30b/0x17c0 fs/overlayfs/super.c:874 ovl_fill_super+0x13ff/0x3620 fs/overlayfs/super.c:1427 vfs_get_super fs/super.c:1346 [inline] get_tree_nodev+0xb5/0x140 fs/super.c:1365 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #2 (&oi->ip_xattr_sem){++++}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x30a/0x770 fs/ocfs2/acl.c:366 ocfs2_mknod+0x140f/0x2300 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4121 do_mkdirat+0x1dc/0x450 fs/namei.c:4144 __do_sys_mkdirat fs/namei.c:4159 [inline] __se_sys_mkdirat fs/namei.c:4157 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x46/0x2e0 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3a8/0x6f0 fs/ocfs2/journal.c:372 ocfs2_mknod+0xf1d/0x2300 fs/ocfs2/namei.c:361 ocfs2_mkdir+0x196/0x430 fs/ocfs2/namei.c:657 vfs_mkdir+0x296/0x440 fs/namei.c:4121 do_mkdirat+0x1dc/0x450 fs/namei.c:4144 __do_sys_mkdirat fs/namei.c:4159 [inline] __se_sys_mkdirat fs/namei.c:4157 [inline] __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4157 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (sb_internal#2){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2df1/0x7d40 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1633 [inline] sb_start_intwrite include/linux/fs.h:1755 [inline] ocfs2_start_trans+0x2a9/0x6f0 fs/ocfs2/journal.c:370 ocfs2_setattr+0xc72/0x1bc0 fs/ocfs2/file.c:1262 notify_change+0xb0d/0xe10 fs/attr.c:499 ovl_do_notify_change fs/overlayfs/overlayfs.h:188 [inline] ovl_workdir_create+0x567/0x6d0 fs/overlayfs/super.c:350 ovl_make_workdir fs/overlayfs/super.c:716 [inline] ovl_get_workdir+0x30b/0x17c0 fs/overlayfs/super.c:874 ovl_fill_super+0x13ff/0x3620 fs/overlayfs/super.c:1427 vfs_get_super fs/super.c:1346 [inline] get_tree_nodev+0xb5/0x140 fs/super.c:1365 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: sb_internal#2 --> &oi->ip_xattr_sem --> &oi->ip_alloc_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_alloc_sem); lock(&oi->ip_xattr_sem); lock(&oi->ip_alloc_sem); rlock(sb_internal#2); *** DEADLOCK *** 5 locks held by syz.0.17/5930: #0: ffff888079f920e0 (&type->s_umount_key#57/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x920 fs/super.c:352 #1: ffff888026c50418 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:412 #2: ffff88806164df58 (&sb->s_type->i_mutex_key#20/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline] #2: ffff88806164df58 (&sb->s_type->i_mutex_key#20/1){+.+.}-{3:3}, at: ovl_workdir_create+0x14c/0x6d0 fs/overlayfs/super.c:290 #3: ffff88806164ed98 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #3: ffff88806164ed98 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: ovl_workdir_create+0x4fb/0x6d0 fs/overlayfs/super.c:349 #4: ffff88806164ea20 (&oi->ip_alloc_sem){+.+.}-{3:3}, at: ocfs2_setattr+0xc63/0x1bc0 fs/ocfs2/file.c:1261 stack backtrace: CPU: 1 PID: 5930 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106 check_noncircular+0x2fc/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2df1/0x7d40 kernel/locking/lockdep.c:5137 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1633 [inline] sb_start_intwrite include/linux/fs.h:1755 [inline] ocfs2_start_trans+0x2a9/0x6f0 fs/ocfs2/journal.c:370 ocfs2_setattr+0xc72/0x1bc0 fs/ocfs2/file.c:1262 notify_change+0xb0d/0xe10 fs/attr.c:499 ovl_do_notify_change fs/overlayfs/overlayfs.h:188 [inline] ovl_workdir_create+0x567/0x6d0 fs/overlayfs/super.c:350 ovl_make_workdir fs/overlayfs/super.c:716 [inline] ovl_get_workdir+0x30b/0x17c0 fs/overlayfs/super.c:874 ovl_fill_super+0x13ff/0x3620 fs/overlayfs/super.c:1427 vfs_get_super fs/super.c:1346 [inline] get_tree_nodev+0xb5/0x140 fs/super.c:1365 vfs_get_tree+0x8c/0x280 fs/super.c:1764 do_new_mount+0x24b/0xa40 fs/namespace.c:3386 do_mount fs/namespace.c:3726 [inline] __do_sys_mount fs/namespace.c:3935 [inline] __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fcf4939cdd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc03f3d278 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fcf49615fa0 RCX: 00007fcf4939cdd9 RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000 RBP: 00007fcf49432d69 R08: 00002000000002c0 R09: 0000000000000000 R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcf49615fac R14: 00007fcf49615fa0 R15: 00007fcf49615fa0 overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: upper fs missing required features.