ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.3.366/8176 is trying to acquire lock: ffff88804a1a2610 (sb_internal#6){.+.+}-{0:0}, at: ocfs2_setattr+0x11c3/0x2560 fs/ocfs2/file.c:1263 but task is already holding lock: ffff8880512822e0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x11b2/0x2560 fs/ocfs2/file.c:1262 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_alloc_sem){+.+.}-{4:4}: down_write+0x92/0x200 kernel/locking/rwsem.c:1590 ocfs2_try_remove_refcount_tree+0xa7/0x320 fs/ocfs2/refcounttree.c:932 ocfs2_xattr_set+0x1043/0x2a80 fs/ocfs2/xattr.c:3669 ocfs2_set_acl+0x46d/0x550 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x224/0x2d0 fs/ocfs2/acl.c:286 set_posix_acl+0x25f/0x320 fs/posix_acl.c:954 vfs_remove_acl+0x33f/0x650 fs/posix_acl.c:1241 ovl_do_remove_acl fs/overlayfs/overlayfs.h:355 [inline] ovl_workdir_create+0x55d/0xa40 fs/overlayfs/super.c:364 ovl_make_workdir fs/overlayfs/super.c:679 [inline] ovl_get_workdir fs/overlayfs/super.c:837 [inline] ovl_fill_super+0xf1d/0x7130 fs/overlayfs/super.c:1468 vfs_get_super fs/super.c:1324 [inline] get_tree_nodev+0xdd/0x190 fs/super.c:1343 vfs_get_tree+0x8e/0x340 fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount fs/namespace.c:3727 [inline] path_mount+0x7b9/0x23a0 fs/namespace.c:4037 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount fs/namespace.c:4215 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&oi->ip_xattr_sem){++++}-{4:4}: down_read+0x9b/0x480 kernel/locking/rwsem.c:1537 ocfs2_init_acl+0x2fc/0x7d0 fs/ocfs2/acl.c:366 ocfs2_mknod+0xd5c/0x2540 fs/ocfs2/namei.c:413 ocfs2_mkdir+0x17c/0x490 fs/ocfs2/namei.c:659 vfs_mkdir+0x593/0x8c0 fs/namei.c:4453 do_mkdirat+0x304/0x3e0 fs/namei.c:4486 __do_sys_mkdirat fs/namei.c:4503 [inline] __se_sys_mkdirat fs/namei.c:4501 [inline] __x64_sys_mkdirat+0x83/0xb0 fs/namei.c:4501 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0x5ea/0x1410 fs/jbd2/transaction.c:444 jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x3b9/0x970 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xbd/0x490 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0xdad/0x16b0 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x83d/0x1050 fs/quota/dquot.c:2462 dquot_load_quota_inode fs/quota/dquot.c:2499 [inline] dquot_load_quota_inode+0x2a3/0x470 fs/quota/dquot.c:2491 ocfs2_enable_quotas+0x28a/0x5a0 fs/ocfs2/super.c:930 ocfs2_fill_super+0x1d7c/0x43b0 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1691 vfs_get_tree+0x8e/0x340 fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount fs/namespace.c:3727 [inline] path_mount+0x7b9/0x23a0 fs/namespace.c:4037 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount fs/namespace.c:4215 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&journal->j_trans_barrier){.+.+}-{4:4}: down_read+0x9b/0x480 kernel/locking/rwsem.c:1537 ocfs2_start_trans+0x3ae/0x970 fs/ocfs2/journal.c:372 ocfs2_modify_bh+0xbd/0x490 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0xdad/0x16b0 fs/ocfs2/quota_local.c:767 dquot_load_quota_sb+0x83d/0x1050 fs/quota/dquot.c:2462 dquot_load_quota_inode fs/quota/dquot.c:2499 [inline] dquot_load_quota_inode+0x2a3/0x470 fs/quota/dquot.c:2491 ocfs2_enable_quotas+0x28a/0x5a0 fs/ocfs2/super.c:930 ocfs2_fill_super+0x1d7c/0x43b0 fs/ocfs2/super.c:1140 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1691 vfs_get_tree+0x8e/0x340 fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount fs/namespace.c:3727 [inline] path_mount+0x7b9/0x23a0 fs/namespace.c:4037 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount fs/namespace.c:4215 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (sb_internal#6){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1916 [inline] sb_start_intwrite include/linux/fs.h:2099 [inline] ocfs2_start_trans+0x29d/0x970 fs/ocfs2/journal.c:370 ocfs2_setattr+0x11c3/0x2560 fs/ocfs2/file.c:1263 notify_change+0x6d2/0x12a0 fs/attr.c:546 ovl_do_notify_change fs/overlayfs/overlayfs.h:203 [inline] ovl_workdir_create+0x732/0xa40 fs/overlayfs/super.c:374 ovl_make_workdir fs/overlayfs/super.c:679 [inline] ovl_get_workdir fs/overlayfs/super.c:837 [inline] ovl_fill_super+0xf1d/0x7130 fs/overlayfs/super.c:1468 vfs_get_super fs/super.c:1324 [inline] get_tree_nodev+0xdd/0x190 fs/super.c:1343 vfs_get_tree+0x8e/0x340 fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount fs/namespace.c:3727 [inline] path_mount+0x7b9/0x23a0 fs/namespace.c:4037 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount fs/namespace.c:4215 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: sb_internal#6 --> &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#6); *** DEADLOCK *** 4 locks held by syz.3.366/8176: #0: ffff88807c2de0e0 (&type->s_umount_key#64/1){+.+.}-{4:4}, at: alloc_super+0x1e3/0xb60 fs/super.c:344 #1: ffff88804a1a2420 (sb_writers#22){.+.+}-{0:0}, at: ovl_make_workdir fs/overlayfs/super.c:675 [inline] #1: ffff88804a1a2420 (sb_writers#22){.+.+}-{0:0}, at: ovl_get_workdir fs/overlayfs/super.c:837 [inline] #1: ffff88804a1a2420 (sb_writers#22){.+.+}-{0:0}, at: ovl_fill_super+0xeee/0x7130 fs/overlayfs/super.c:1468 #2: ffff888051282640 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:980 [inline] #2: ffff888051282640 (&sb->s_type->i_mutex_key#30){+.+.}-{4:4}, at: ovl_workdir_create+0x6bc/0xa40 fs/overlayfs/super.c:373 #3: ffff8880512822e0 (&oi->ip_alloc_sem){+.+.}-{4:4}, at: ocfs2_setattr+0x11b2/0x2560 fs/ocfs2/file.c:1262 stack backtrace: CPU: 0 UID: 0 PID: 8176 Comm: syz.3.366 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2043 check_noncircular+0x14c/0x170 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain kernel/locking/lockdep.c:3908 [inline] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 percpu_down_read_internal include/linux/percpu-rwsem.h:53 [inline] percpu_down_read_freezable include/linux/percpu-rwsem.h:83 [inline] __sb_start_write include/linux/fs.h:1916 [inline] sb_start_intwrite include/linux/fs.h:2099 [inline] ocfs2_start_trans+0x29d/0x970 fs/ocfs2/journal.c:370 ocfs2_setattr+0x11c3/0x2560 fs/ocfs2/file.c:1263 notify_change+0x6d2/0x12a0 fs/attr.c:546 ovl_do_notify_change fs/overlayfs/overlayfs.h:203 [inline] ovl_workdir_create+0x732/0xa40 fs/overlayfs/super.c:374 ovl_make_workdir fs/overlayfs/super.c:679 [inline] ovl_get_workdir fs/overlayfs/super.c:837 [inline] ovl_fill_super+0xf1d/0x7130 fs/overlayfs/super.c:1468 vfs_get_super fs/super.c:1324 [inline] get_tree_nodev+0xdd/0x190 fs/super.c:1343 vfs_get_tree+0x8e/0x340 fs/super.c:1751 fc_mount fs/namespace.c:1208 [inline] do_new_mount_fc fs/namespace.c:3651 [inline] do_new_mount fs/namespace.c:3727 [inline] path_mount+0x7b9/0x23a0 fs/namespace.c:4037 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount fs/namespace.c:4215 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff4bd58f6c9 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:00007ff4be49a038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff4bd7e5fa0 RCX: 00007ff4bd58f6c9 RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000000000000000 RBP: 00007ff4bd611f91 R08: 0000200000000500 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff4bd7e6038 R14: 00007ff4bd7e5fa0 R15: 00007ffc78818a58 overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: upper fs missing required features.