====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ syz.1.2213/13470 is trying to acquire lock: ffff88804c44ed88 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] ffff88804c44ed88 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_del_inode_from_orphan+0x12b/0x7a0 fs/ocfs2/namei.c:2713 but task is already holding lock: ffff88804c44df48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] ffff88804c44df48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x16a/0x44d0 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+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_reserve_suballoc_bits+0x16a/0x44d0 fs/ocfs2/suballoc.c:782 ocfs2_reserve_new_metadata_blocks+0x412/0x9a0 fs/ocfs2/suballoc.c:978 ocfs2_mknod+0xecc/0x2510 fs/ocfs2/namei.c:347 ocfs2_create+0x192/0x420 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3470 [inline] open_last_lookups fs/namei.c:3540 [inline] path_openat+0x11db/0x2fa0 fs/namei.c:3747 do_filp_open+0x1e2/0x410 fs/namei.c:3777 do_sys_openat2+0x150/0x4b0 fs/open.c:1255 do_sys_open fs/open.c:1271 [inline] __do_sys_open fs/open.c:1279 [inline] __se_sys_open fs/open.c:1275 [inline] __x64_sys_open+0x11b/0x140 fs/open.c:1275 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #1 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}: down_write+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [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+0x1d72/0x41d0 fs/ocfs2/inode.c:1216 evict+0x4c9/0x8d0 fs/inode.c:647 d_delete_notify include/linux/fsnotify.h:267 [inline] vfs_rmdir+0x3b4/0x430 fs/namei.c:4170 do_rmdir+0x2a1/0x740 fs/namei.c:4218 __do_sys_unlinkat fs/namei.c:4398 [inline] __se_sys_unlinkat fs/namei.c:4392 [inline] __x64_sys_unlinkat+0xc0/0xe0 fs/namei.c:4392 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c42/0x7d10 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 down_write+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_del_inode_from_orphan+0x12b/0x7a0 fs/ocfs2/namei.c:2713 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2407 [inline] ocfs2_dio_end_io+0x103a/0x13c0 fs/ocfs2/aops.c:2446 dio_complete+0x249/0x720 fs/direct-io.c:272 do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x2e31/0x3a70 fs/direct-io.c:1368 ocfs2_direct_IO+0x233/0x2a0 fs/ocfs2/aops.c:2483 generic_file_direct_write+0x22c/0x490 mm/filemap.c:3687 __generic_file_write_iter+0x2b1/0x4e0 mm/filemap.c:3869 ocfs2_file_write_iter+0x1670/0x1e70 fs/ocfs2/file.c:2472 do_iter_readv_writev+0x47e/0x5f0 fs/read_write.c:-1 do_iter_write+0x205/0x7b0 fs/read_write.c:855 iter_file_splice_write+0x699/0xcc0 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] do_splice+0xe5a/0x1640 fs/splice.c:1108 __do_splice fs/splice.c:1173 [inline] __do_sys_splice fs/splice.c:1379 [inline] __se_sys_splice+0x34d/0x440 fs/splice.c:1361 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 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 *** 4 locks held by syz.1.2213/13470: #0: ffff88807d78c460 (sb_writers#24){.+.+}-{0:0}, at: __do_splice fs/splice.c:1173 [inline] #0: ffff88807d78c460 (sb_writers#24){.+.+}-{0:0}, at: __do_sys_splice fs/splice.c:1379 [inline] #0: ffff88807d78c460 (sb_writers#24){.+.+}-{0:0}, at: __se_sys_splice+0x34d/0x440 fs/splice.c:1361 #1: ffff88801f0de068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock_nested fs/pipe.c:81 [inline] #1: ffff88801f0de068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock fs/pipe.c:89 [inline] #1: ffff88801f0de068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_wait_readable+0x3ff/0x550 fs/pipe.c:1053 #2: ffff88805f46ed88 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #2: ffff88805f46ed88 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: ocfs2_file_write_iter+0x436/0x1e70 fs/ocfs2/file.c:2402 #3: ffff88804c44df48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #3: ffff88804c44df48 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x16a/0x44d0 fs/ocfs2/suballoc.c:782 stack backtrace: CPU: 1 PID: 13470 Comm: syz.1.2213 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 check_noncircular+0x296/0x330 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c42/0x7d10 kernel/locking/lockdep.c:5012 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623 down_write+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_del_inode_from_orphan+0x12b/0x7a0 fs/ocfs2/namei.c:2713 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2407 [inline] ocfs2_dio_end_io+0x103a/0x13c0 fs/ocfs2/aops.c:2446 dio_complete+0x249/0x720 fs/direct-io.c:272 do_blockdev_direct_IO fs/direct-io.c:1336 [inline] __blockdev_direct_IO+0x2e31/0x3a70 fs/direct-io.c:1368 ocfs2_direct_IO+0x233/0x2a0 fs/ocfs2/aops.c:2483 generic_file_direct_write+0x22c/0x490 mm/filemap.c:3687 __generic_file_write_iter+0x2b1/0x4e0 mm/filemap.c:3869 ocfs2_file_write_iter+0x1670/0x1e70 fs/ocfs2/file.c:2472 do_iter_readv_writev+0x47e/0x5f0 fs/read_write.c:-1 do_iter_write+0x205/0x7b0 fs/read_write.c:855 iter_file_splice_write+0x699/0xcc0 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] do_splice+0xe5a/0x1640 fs/splice.c:1108 __do_splice fs/splice.c:1173 [inline] __do_sys_splice fs/splice.c:1379 [inline] __se_sys_splice+0x34d/0x440 fs/splice.c:1361 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fe6b20c2e59 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:00007fe6b031c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 00007fe6b233bfa0 RCX: 00007fe6b20c2e59 RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007fe6b2158d6f R08: 00000000088000cc R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe6b233c038 R14: 00007fe6b233bfa0 R15: 00007ffe3e764458 syz.1.2213 (13470) used greatest stack depth: 17232 bytes left