ocfs2: Mounting device (7,4) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.4.694/8277 is trying to acquire lock: ffff88805dadb498 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff88805dadb498 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_del_inode_from_orphan+0x12f/0x7a0 fs/ocfs2/namei.c:2716 but task is already holding lock: ffff88805dad9818 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] ffff88805dad9818 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x16e/0x44c0 fs/ocfs2/suballoc.c:782 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}: down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_reserve_suballoc_bits+0x16e/0x44c0 fs/ocfs2/suballoc.c:782 ocfs2_reserve_new_metadata_blocks+0x416/0x9a0 fs/ocfs2/suballoc.c:978 ocfs2_mknod+0xe8f/0x2300 fs/ocfs2/namei.c:347 ocfs2_create+0x196/0x430 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3496 [inline] open_last_lookups fs/namei.c:3564 [inline] path_openat+0x12a0/0x3230 fs/namei.c:3794 do_filp_open+0x1f5/0x430 fs/namei.c:3824 do_sys_openat2+0x134/0x1d0 fs/open.c:1421 do_sys_open fs/open.c:1436 [inline] __do_sys_openat fs/open.c:1452 [inline] __se_sys_openat fs/open.c:1447 [inline] __x64_sys_openat+0x139/0x160 fs/open.c:1447 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}: down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:655 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:818 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline] ocfs2_evict_inode+0x1d84/0x41e0 fs/ocfs2/inode.c:1219 evict+0x4ca/0x8d0 fs/inode.c:705 ocfs2_dentry_iput+0x24e/0x390 fs/ocfs2/dcache.c:418 __dentry_kill+0x431/0x650 fs/dcache.c:611 dentry_kill+0xb8/0x290 fs/dcache.c:-1 dput+0xfe/0x1e0 fs/dcache.c:918 __fput+0x5e5/0x970 fs/file_table.c:392 task_work_run+0x1d4/0x260 kernel/task_work.c:245 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:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}: 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 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_del_inode_from_orphan+0x12f/0x7a0 fs/ocfs2/namei.c:2716 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2407 [inline] ocfs2_dio_end_io+0x1040/0x13c0 fs/ocfs2/aops.c:2446 dio_complete+0x254/0x710 fs/direct-io.c:282 __blockdev_direct_IO+0x2ea8/0x3500 fs/direct-io.c:1308 ocfs2_direct_IO+0x235/0x2a0 fs/ocfs2/aops.c:2483 generic_file_direct_write+0x1d4/0x3e0 mm/filemap.c:3961 __generic_file_write_iter+0x11b/0x230 mm/filemap.c:4117 ocfs2_file_write_iter+0x167a/0x1e80 fs/ocfs2/file.c:2468 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x738/0xc30 fs/read_write.c:860 vfs_writev fs/read_write.c:933 [inline] do_pwritev+0x241/0x3a0 fs/read_write.c:1030 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 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] --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); *** DEADLOCK *** 3 locks held by syz.4.694/8277: #0: ffff888023e20418 (sb_writers#13){.+.+}-{0:0}, at: vfs_writev fs/read_write.c:932 [inline] #0: ffff888023e20418 (sb_writers#13){.+.+}-{0:0}, at: do_pwritev+0x22a/0x3a0 fs/read_write.c:1030 #1: ffff888075a75118 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #1: ffff888075a75118 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x440/0x1e80 fs/ocfs2/file.c:2398 #2: ffff88805dad9818 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline] #2: ffff88805dad9818 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x16e/0x44c0 fs/ocfs2/suballoc.c:782 stack backtrace: CPU: 1 PID: 8277 Comm: syz.4.694 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 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 down_write+0x97/0x200 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:804 [inline] ocfs2_del_inode_from_orphan+0x12f/0x7a0 fs/ocfs2/namei.c:2716 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2407 [inline] ocfs2_dio_end_io+0x1040/0x13c0 fs/ocfs2/aops.c:2446 dio_complete+0x254/0x710 fs/direct-io.c:282 __blockdev_direct_IO+0x2ea8/0x3500 fs/direct-io.c:1308 ocfs2_direct_IO+0x235/0x2a0 fs/ocfs2/aops.c:2483 generic_file_direct_write+0x1d4/0x3e0 mm/filemap.c:3961 __generic_file_write_iter+0x11b/0x230 mm/filemap.c:4117 ocfs2_file_write_iter+0x167a/0x1e80 fs/ocfs2/file.c:2468 do_iter_readv_writev fs/read_write.c:-1 [inline] do_iter_write+0x738/0xc30 fs/read_write.c:860 vfs_writev fs/read_write.c:933 [inline] do_pwritev+0x241/0x3a0 fs/read_write.c:1030 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fac4c39ce59 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:00007fac4d303028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007fac4c615fa0 RCX: 00007fac4c39ce59 RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004 RBP: 00007fac4c432e6f R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fac4c616038 R14: 00007fac4c615fa0 R15: 00007fffc7cdbbb8