ocfs2: Mounting device (7,3) on (node local, slot 0) with ordered data mode. overlayfs: upper fs does not support tmpfile. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ syz.3.2677/13745 is trying to acquire lock: ffff888056f19800 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] ffff888056f19800 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733 but task is already holding lock: ffff888056f689c0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] ffff888056f689c0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2cd/0x11f0 fs/ocfs2/inode.c:854 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}: down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_del_inode_from_orphan+0x112/0x700 fs/ocfs2/namei.c:2731 ocfs2_dio_end_io_write+0x2cd/0xee0 fs/ocfs2/aops.c:2306 ocfs2_dio_end_io+0x136/0x2c0 fs/ocfs2/aops.c:2404 dio_complete+0x224/0x950 fs/direct-io.c:281 __blockdev_direct_IO+0x309f/0x3ae0 fs/direct-io.c:1303 ocfs2_direct_IO+0x263/0x360 fs/ocfs2/aops.c:2441 generic_file_direct_write+0x198/0x410 mm/filemap.c:4248 __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4417 ocfs2_file_write_iter+0xd79/0x2160 fs/ocfs2/file.c:2475 do_iter_readv_writev+0x6ee/0x920 fs/read_write.c:827 vfs_writev+0x360/0xe10 fs/read_write.c:1057 do_pwritev+0x1ac/0x270 fs/read_write.c:1153 __do_sys_pwritev2 fs/read_write.c:1211 [inline] __se_sys_pwritev2 fs/read_write.c:1202 [inline] __x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1202 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 ocfs2_create_local_dquot+0x157/0xb30 fs/ocfs2/quota_local.c:1227 ocfs2_acquire_dquot+0x7e5/0xae0 fs/ocfs2/quota_global.c:883 dqget+0x666/0x1130 fs/quota/dquot.c:980 __dquot_initialize+0x5a5/0xd70 fs/quota/dquot.c:1508 ocfs2_get_init_inode+0xe9/0x1b0 fs/ocfs2/namei.c:206 ocfs2_mknod+0xd5f/0x2750 fs/ocfs2/namei.c:314 ocfs2_create+0xf4/0x3f0 fs/ocfs2/namei.c:677 lookup_open.isra.0+0x139b/0x1890 fs/namei.c:4449 open_last_lookups fs/namei.c:4549 [inline] path_openat+0x117d/0x3120 fs/namei.c:4793 do_filp_open+0x1f7/0x420 fs/namei.c:4823 do_sys_openat2+0x12e/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_creat fs/open.c:1514 [inline] __se_sys_creat fs/open.c:1508 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1508 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&dquot->dq_lock){+.+.}-{4:4}: __mutex_lock_common kernel/locking/mutex.c:614 [inline] __mutex_lock+0x1a2/0x1b90 kernel/locking/mutex.c:776 wait_on_dquot fs/quota/dquot.c:357 [inline] dqget+0x5c7/0x1130 fs/quota/dquot.c:975 __dquot_initialize+0x5a5/0xd70 fs/quota/dquot.c:1508 ocfs2_get_init_inode+0xe9/0x1b0 fs/ocfs2/namei.c:206 ocfs2_mknod+0xd5f/0x2750 fs/ocfs2/namei.c:314 ocfs2_create+0xf4/0x3f0 fs/ocfs2/namei.c:677 lookup_open.isra.0+0x139b/0x1890 fs/namei.c:4449 open_last_lookups fs/namei.c:4549 [inline] path_openat+0x117d/0x3120 fs/namei.c:4793 do_filp_open+0x1f7/0x420 fs/namei.c:4823 do_sys_openat2+0x12e/0x220 fs/open.c:1430 do_sys_open fs/open.c:1436 [inline] __do_sys_creat fs/open.c:1514 [inline] __se_sys_creat fs/open.c:1508 [inline] __x64_sys_creat+0xcc/0x120 fs/open.c:1508 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}: 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x17c/0x330 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733 ocfs2_wipe_inode+0x6db/0x11f0 fs/ocfs2/inode.c:896 ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x7b9/0x13c0 fs/ocfs2/inode.c:1299 evict+0x3c2/0xad0 fs/inode.c:837 iput_final fs/inode.c:1954 [inline] iput.part.0+0x624/0x1150 fs/inode.c:2006 iput+0x35/0x40 fs/inode.c:1969 ocfs2_dentry_iput+0x139/0x330 fs/ocfs2/dcache.c:407 dentry_unlink_inode+0x282/0x490 fs/dcache.c:465 __dentry_kill+0x1d0/0x600 fs/dcache.c:670 finish_dput+0x76/0x480 fs/dcache.c:879 dput.part.0+0x456/0x570 fs/dcache.c:928 dput+0x1f/0x30 fs/dcache.c:920 ovl_check_rename_whiteout+0x40c/0x620 fs/overlayfs/super.c:622 ovl_make_workdir fs/overlayfs/super.c:717 [inline] ovl_get_workdir fs/overlayfs/super.c:840 [inline] ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline] ovl_fill_super+0x11bb/0x5db0 fs/overlayfs/super.c:1567 vfs_get_super fs/super.c:1324 [inline] get_tree_nodev+0xdd/0x190 fs/super.c:1343 vfs_get_tree+0x92/0x320 fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount fs/namespace.c:3712 [inline] path_mount+0x7d0/0x23c0 fs/namespace.c:4022 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount fs/namespace.c:4201 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4201 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 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: &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]); lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]); *** DEADLOCK *** 4 locks held by syz.3.2677/13745: #0: ffff8880327f20e0 (&type->s_umount_key#58/1){+.+.}-{4:4}, at: alloc_super+0x244/0xd20 fs/super.c:344 #1: ffff88807eac2420 (sb_writers#14){.+.+}-{0:0}, at: ovl_make_workdir fs/overlayfs/super.c:678 [inline] #1: ffff88807eac2420 (sb_writers#14){.+.+}-{0:0}, at: ovl_get_workdir fs/overlayfs/super.c:840 [inline] #1: ffff88807eac2420 (sb_writers#14){.+.+}-{0:0}, at: ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline] #1: ffff88807eac2420 (sb_writers#14){.+.+}-{0:0}, at: ovl_fill_super+0xebb/0x5db0 fs/overlayfs/super.c:1567 #2: ffff8880359fcbd0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0xe4/0x2e0 fs/ocfs2/dlmglue.c:2875 #3: ffff888056f689c0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1027 [inline] #3: ffff888056f689c0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_wipe_inode+0x2cd/0x11f0 fs/ocfs2/inode.c:854 stack backtrace: CPU: 1 UID: 0 PID: 13745 Comm: syz.3.2677 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043 check_noncircular+0x146/0x160 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+0x14b8/0x2630 kernel/locking/lockdep.c:5237 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x17c/0x330 kernel/locking/lockdep.c:5825 down_write+0x8b/0x1f0 kernel/locking/rwsem.c:1590 inode_lock include/linux/fs.h:1027 [inline] ocfs2_remove_inode+0x15b/0x860 fs/ocfs2/inode.c:733 ocfs2_wipe_inode+0x6db/0x11f0 fs/ocfs2/inode.c:896 ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline] ocfs2_evict_inode+0x7b9/0x13c0 fs/ocfs2/inode.c:1299 evict+0x3c2/0xad0 fs/inode.c:837 iput_final fs/inode.c:1954 [inline] iput.part.0+0x624/0x1150 fs/inode.c:2006 iput+0x35/0x40 fs/inode.c:1969 ocfs2_dentry_iput+0x139/0x330 fs/ocfs2/dcache.c:407 dentry_unlink_inode+0x282/0x490 fs/dcache.c:465 __dentry_kill+0x1d0/0x600 fs/dcache.c:670 finish_dput+0x76/0x480 fs/dcache.c:879 dput.part.0+0x456/0x570 fs/dcache.c:928 dput+0x1f/0x30 fs/dcache.c:920 ovl_check_rename_whiteout+0x40c/0x620 fs/overlayfs/super.c:622 ovl_make_workdir fs/overlayfs/super.c:717 [inline] ovl_get_workdir fs/overlayfs/super.c:840 [inline] ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline] ovl_fill_super+0x11bb/0x5db0 fs/overlayfs/super.c:1567 vfs_get_super fs/super.c:1324 [inline] get_tree_nodev+0xdd/0x190 fs/super.c:1343 vfs_get_tree+0x92/0x320 fs/super.c:1751 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount fs/namespace.c:3712 [inline] path_mount+0x7d0/0x23c0 fs/namespace.c:4022 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount fs/namespace.c:4201 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:4201 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ffb8859acb9 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:00007ffb893bc028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffb88815fa0 RCX: 00007ffb8859acb9 RDX: 0000200000000000 RSI: 0000200000000140 RDI: 0000000000000000 RBP: 00007ffb88608bf7 R08: 0000200000000180 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffb88816038 R14: 00007ffb88815fa0 R15: 00007fff9b40ccd8 overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: failed to set xattr on upper overlayfs: ...falling back to redirect_dir=nofollow. overlayfs: ...falling back to index=off. overlayfs: ...falling back to uuid=null. overlayfs: upper fs missing required features.