====================================================== WARNING: possible circular locking dependency detected 6.14.0-rc2-syzkaller-00162-g68763b29e0a6 #0 Not tainted ------------------------------------------------------ syz.9.306/8250 is trying to acquire lock: ffff88805b77c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline] ffff88805b77c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_remove_inode fs/ocfs2/inode.c:669 [inline] ffff88805b77c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:832 [inline] ffff88805b77c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ffff88805b77c2c0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}, at: ocfs2_evict_inode+0x209f/0x4630 fs/ocfs2/inode.c:1230 but task is already holding lock: ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline] ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:790 [inline] ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1b17/0x4630 fs/ocfs2/inode.c:1230 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:877 [inline] ocfs2_del_inode_from_orphan+0x159/0x800 fs/ocfs2/namei.c:2727 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2310 [inline] ocfs2_dio_end_io+0x55b/0x1250 fs/ocfs2/aops.c:2408 dio_complete+0x250/0x720 fs/direct-io.c:281 __blockdev_direct_IO+0x3eb6/0x4890 fs/direct-io.c:1303 ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2445 generic_file_direct_write+0x1e6/0x400 mm/filemap.c:4112 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4276 ocfs2_file_write_iter+0x19af/0x2180 fs/ocfs2/file.c:2469 do_iter_readv_writev+0x71a/0x9d0 vfs_writev+0x38b/0xbc0 fs/read_write.c:1050 do_pwritev fs/read_write.c:1146 [inline] __do_sys_pwritev2 fs/read_write.c:1204 [inline] __se_sys_pwritev2+0x196/0x2b0 fs/read_write.c:1195 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&ocfs2_quota_ip_alloc_sem_key){++++}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 ocfs2_lock_global_qf+0x225/0x2b0 fs/ocfs2/quota_global.c:314 ocfs2_acquire_dquot+0x2b0/0xb70 fs/ocfs2/quota_global.c:828 dqget+0x770/0xeb0 fs/quota/dquot.c:977 __dquot_initialize+0x2e3/0xec0 fs/quota/dquot.c:1505 ocfs2_get_init_inode+0x158/0x1d0 fs/ocfs2/namei.c:202 ocfs2_mknod+0xcfa/0x2b30 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x1ab/0x470 fs/ocfs2/namei.c:656 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313 do_mkdirat+0x264/0x3a0 fs/namei.c:4336 __do_sys_mkdir fs/namei.c:4356 [inline] __se_sys_mkdir fs/namei.c:4354 [inline] __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:877 [inline] ocfs2_lock_global_qf+0x206/0x2b0 fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x2b0/0xb70 fs/ocfs2/quota_global.c:828 dqget+0x770/0xeb0 fs/quota/dquot.c:977 __dquot_initialize+0x2e3/0xec0 fs/quota/dquot.c:1505 ocfs2_get_init_inode+0x158/0x1d0 fs/ocfs2/namei.c:202 ocfs2_mknod+0xcfa/0x2b30 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x1ab/0x470 fs/ocfs2/namei.c:656 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313 do_mkdirat+0x264/0x3a0 fs/namei.c:4336 __do_sys_mkdir fs/namei.c:4356 [inline] __se_sys_mkdir fs/namei.c:4354 [inline] __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&dquot->dq_lock){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730 wait_on_dquot fs/quota/dquot.c:354 [inline] dqget+0x6e6/0xeb0 fs/quota/dquot.c:972 __dquot_initialize+0x2e3/0xec0 fs/quota/dquot.c:1505 ocfs2_get_init_inode+0x158/0x1d0 fs/ocfs2/namei.c:202 ocfs2_mknod+0xcfa/0x2b30 fs/ocfs2/namei.c:310 ocfs2_mkdir+0x1ab/0x470 fs/ocfs2/namei.c:656 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313 do_mkdirat+0x264/0x3a0 fs/namei.c:4336 __do_sys_mkdir fs/namei.c:4356 [inline] __se_sys_mkdir fs/namei.c:4354 [inline] __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:877 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:669 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:832 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ocfs2_evict_inode+0x209f/0x4630 fs/ocfs2/inode.c:1230 evict+0x4e8/0x9a0 fs/inode.c:796 d_delete_notify include/linux/fsnotify.h:376 [inline] vfs_rmdir+0x3d7/0x510 fs/namei.c:4409 do_rmdir+0x3b5/0x580 fs/namei.c:4455 __do_sys_rmdir fs/namei.c:4474 [inline] __se_sys_rmdir fs/namei.c:4472 [inline] __x64_sys_rmdir+0x47/0x50 fs/namei.c:4472 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 --> &ocfs2_quota_ip_alloc_sem_key --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type] Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); *** DEADLOCK *** 4 locks held by syz.9.306/8250: #0: ffff88805fefa420 (sb_writers#26){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547 #1: ffff88807bbbd100 (&type->i_mutex_dir_key#20/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:912 [inline] #1: ffff88807bbbd100 (&type->i_mutex_dir_key#20/1){+.+.}-{4:4}, at: do_rmdir+0x263/0x580 fs/namei.c:4443 #2: ffff888012460bd0 (&osb->nfs_sync_rwlock){.+.+}-{4:4}, at: ocfs2_nfs_sync_lock+0x109/0x260 fs/ocfs2/dlmglue.c:2875 #3: ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:877 [inline] #3: ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_wipe_inode fs/ocfs2/inode.c:790 [inline] #3: ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] #3: ffff88805b77b480 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1b17/0x4630 fs/ocfs2/inode.c:1230 stack backtrace: CPU: 1 UID: 0 PID: 8250 Comm: syz.9.306 Not tainted 6.14.0-rc2-syzkaller-00162-g68763b29e0a6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2076 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2208 check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:877 [inline] ocfs2_remove_inode fs/ocfs2/inode.c:669 [inline] ocfs2_wipe_inode fs/ocfs2/inode.c:832 [inline] ocfs2_delete_inode fs/ocfs2/inode.c:1093 [inline] ocfs2_evict_inode+0x209f/0x4630 fs/ocfs2/inode.c:1230 evict+0x4e8/0x9a0 fs/inode.c:796 d_delete_notify include/linux/fsnotify.h:376 [inline] vfs_rmdir+0x3d7/0x510 fs/namei.c:4409 do_rmdir+0x3b5/0x580 fs/namei.c:4455 __do_sys_rmdir fs/namei.c:4474 [inline] __se_sys_rmdir fs/namei.c:4472 [inline] __x64_sys_rmdir+0x47/0x50 fs/namei.c:4472 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f00e6b8cde9 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:00007f00e79c8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 00007f00e6da5fa0 RCX: 00007f00e6b8cde9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000400000000400 RBP: 00007f00e6c0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f00e6da5fa0 R15: 00007ffd6c4af868