JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode. overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.4.11473/8535 is trying to acquire lock: ffff88804efb5f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] ffff88804efb5f48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_xattr_set+0xba0/0x13e0 fs/ocfs2/xattr.c:3626 but task is already holding lock: ffff88804efb2378 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x472/0x13e0 fs/ocfs2/xattr.c:3587 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&oi->ip_xattr_sem){++++}-{3:3}: down_read+0x42/0x2d0 kernel/locking/rwsem.c:1520 ocfs2_init_acl+0x307/0x770 fs/ocfs2/acl.c:365 ocfs2_mknod+0x15e8/0x25b0 fs/ocfs2/namei.c:410 ocfs2_mkdir+0x1b6/0x4b0 fs/ocfs2/namei.c:657 vfs_mkdir+0x387/0x570 fs/namei.c:4114 do_mkdirat+0x1d8/0x440 fs/namei.c:4139 __do_sys_mkdirat fs/namei.c:4154 [inline] __se_sys_mkdirat fs/namei.c:4152 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (jbd2_handle){++++}-{0:0}: jbd2_journal_lock_updates+0xa8/0x390 fs/jbd2/transaction.c:880 __ocfs2_flush_truncate_log+0x2cf/0x1220 fs/ocfs2/alloc.c:6029 ocfs2_flush_truncate_log+0x4b/0x60 fs/ocfs2/alloc.c:6076 ocfs2_sync_fs+0x119/0x330 fs/ocfs2/super.c:402 sync_filesystem+0x1be/0x220 fs/sync.c:66 generic_shutdown_super+0x6b/0x340 fs/super.c:474 kill_block_super+0x7c/0xe0 fs/super.c:1470 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x2d07/0x7d10 kernel/locking/lockdep.c:5049 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_xattr_set+0xba0/0x13e0 fs/ocfs2/xattr.c:3626 __vfs_setxattr+0x3e0/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x129/0x5e0 fs/xattr.c:216 vfs_setxattr+0x167/0x2e0 fs/xattr.c:309 ovl_do_setxattr fs/overlayfs/overlayfs.h:252 [inline] ovl_setxattr fs/overlayfs/overlayfs.h:264 [inline] ovl_make_workdir fs/overlayfs/super.c:1435 [inline] ovl_get_workdir+0xce9/0x1610 fs/overlayfs/super.c:1539 ovl_fill_super+0x1824/0x2a30 fs/overlayfs/super.c:2095 mount_nodev+0x52/0xe0 fs/super.c:1489 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/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: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 --> jbd2_handle --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(jbd2_handle); lock(&oi->ip_xattr_sem); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); *** DEADLOCK *** 4 locks held by syz.4.11473/8535: #0: ffff8880785480e0 (&type->s_umount_key#95/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 #1: ffff888053918460 (sb_writers#25){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:402 #2: ffff88804efb2648 (&sb->s_type->i_mutex_key#38){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff88804efb2648 (&sb->s_type->i_mutex_key#38){+.+.}-{3:3}, at: vfs_setxattr+0x140/0x2e0 fs/xattr.c:308 #3: ffff88804efb2378 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_xattr_set+0x472/0x13e0 fs/ocfs2/xattr.c:3587 stack backtrace: CPU: 1 PID: 8535 Comm: syz.4.11473 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106 check_noncircular+0x296/0x330 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 kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x2d07/0x7d10 kernel/locking/lockdep.c:5049 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662 down_write+0x36/0x60 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_xattr_set+0xba0/0x13e0 fs/ocfs2/xattr.c:3626 __vfs_setxattr+0x3e0/0x420 fs/xattr.c:182 __vfs_setxattr_noperm+0x129/0x5e0 fs/xattr.c:216 vfs_setxattr+0x167/0x2e0 fs/xattr.c:309 ovl_do_setxattr fs/overlayfs/overlayfs.h:252 [inline] ovl_setxattr fs/overlayfs/overlayfs.h:264 [inline] ovl_make_workdir fs/overlayfs/super.c:1435 [inline] ovl_get_workdir+0xce9/0x1610 fs/overlayfs/super.c:1539 ovl_fill_super+0x1824/0x2a30 fs/overlayfs/super.c:2095 mount_nodev+0x52/0xe0 fs/super.c:1489 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3078 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f315b99c799 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:00007f315c825028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f315bc15fa0 RCX: 00007f315b99c799 RDX: 0000200000000440 RSI: 0000200000000100 RDI: 0000000000000000 RBP: 00007f315ba32c99 R08: 0000200000000300 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f315bc16038 R14: 00007f315bc15fa0 R15: 00007fffcabc0698 OCFS2: ERROR (device loop4): int ocfs2_validate_gd_parent(struct super_block *, struct ocfs2_dinode *, struct buffer_head *, int): Group descriptor #32 has bit count of 1024 On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted. OCFS2: File system is now read-only. (syz.4.11473,8535,1):ocfs2_search_chain:1761 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_search_chain:1871 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_claim_suballoc_bits:1950 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_claim_suballoc_bits:1993 ERROR: status = -30 (syz.4.11473,8535,1):__ocfs2_claim_clusters:2365 ERROR: status = -30 (syz.4.11473,8535,1):__ocfs2_claim_clusters:2373 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_block_group_alloc_contig:433 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_block_group_alloc:705 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_block_group_alloc:758 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_reserve_suballoc_bits:833 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_reserve_suballoc_bits:850 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_reserve_new_metadata_blocks:990 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_reserve_new_metadata_blocks:1013 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_init_xattr_set_ctxt:3284 ERROR: status = -30 (syz.4.11473,8535,1):ocfs2_xattr_set:3641 ERROR: status = -30 overlayfs: failed to set xattr on upper overlayfs: ...falling back to index=off,metacopy=off. overlayfs: upper fs missing required features.