====================================================== WARNING: possible circular locking dependency detected 6.11.0-syzkaller-12113-ge7ed34365879 #0 Not tainted ------------------------------------------------------ syz-executor/5236 is trying to acquire lock: ffff88805fba5f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] ffff88805fba5f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_remove_inode+0x15c/0x8a0 fs/ocfs2/inode.c:655 but task is already holding lock: ffff88807afb5f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] ffff88807afb5f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_wipe_inode+0x2e6/0x1220 fs/ocfs2/inode.c:776 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}: down_write+0x93/0x200 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_del_inode_from_orphan+0x112/0x700 fs/ocfs2/namei.c:2726 ocfs2_dio_end_io_write+0x2cc/0xf30 fs/ocfs2/aops.c:2329 ocfs2_dio_end_io+0x139/0x2a0 fs/ocfs2/aops.c:2427 dio_complete+0x21b/0x8e0 fs/direct-io.c:281 __blockdev_direct_IO+0x3139/0x3d10 fs/direct-io.c:1303 ocfs2_direct_IO+0x263/0x360 fs/ocfs2/aops.c:2464 generic_file_direct_write+0x19a/0x410 mm/filemap.c:3977 __generic_file_write_iter+0x11b/0x240 mm/filemap.c:4141 ocfs2_file_write_iter+0xb70/0x20e0 fs/ocfs2/file.c:2456 do_iter_readv_writev+0x535/0x7f0 fs/read_write.c:834 vfs_writev+0x363/0xdd0 fs/read_write.c:1064 do_pwritev+0x1b4/0x270 fs/read_write.c:1165 __do_sys_pwritev2 fs/read_write.c:1224 [inline] __se_sys_pwritev2 fs/read_write.c:1215 [inline] __x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1215 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}: down_write+0x93/0x200 kernel/locking/rwsem.c:1577 ocfs2_create_local_dquot+0x158/0xb40 fs/ocfs2/quota_local.c:1231 ocfs2_acquire_dquot+0x629/0xaf0 fs/ocfs2/quota_global.c:878 dqget+0x694/0x1160 fs/quota/dquot.c:976 ocfs2_setattr+0x1cb0/0x2460 fs/ocfs2/file.c:1230 notify_change+0x6a9/0x1230 fs/attr.c:503 chown_common+0x538/0x670 fs/open.c:793 vfs_fchown fs/open.c:861 [inline] vfs_fchown fs/open.c:853 [inline] ksys_fchown+0x11a/0x180 fs/open.c:872 __do_sys_fchown fs/open.c:880 [inline] __se_sys_fchown fs/open.c:878 [inline] __x64_sys_fchown+0x72/0xb0 fs/open.c:878 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&dquot->dq_lock){+.+.}-{3:3}: __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x175/0x9c0 kernel/locking/mutex.c:752 wait_on_dquot fs/quota/dquot.c:355 [inline] dqget+0x5f2/0x1160 fs/quota/dquot.c:971 __dquot_initialize+0x588/0xd50 fs/quota/dquot.c:1504 ocfs2_get_init_inode+0xe8/0x1a0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x938/0x2440 fs/ocfs2/namei.c:308 ocfs2_create+0x185/0x450 fs/ocfs2/namei.c:672 lookup_open.isra.0+0x1177/0x14c0 fs/namei.c:3595 open_last_lookups fs/namei.c:3694 [inline] path_openat+0x904/0x2d60 fs/namei.c:3930 do_filp_open+0x1dc/0x430 fs/namei.c:3960 do_sys_openat2+0x17a/0x1e0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1441 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5202 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 down_write+0x93/0x200 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_remove_inode+0x15c/0x8a0 fs/ocfs2/inode.c:655 ocfs2_wipe_inode+0x455/0x1220 fs/ocfs2/inode.c:818 ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline] ocfs2_evict_inode+0x6c5/0x15d0 fs/ocfs2/inode.c:1216 evict+0x40c/0x970 fs/inode.c:723 iput_final fs/inode.c:1875 [inline] iput fs/inode.c:1901 [inline] iput+0x530/0x890 fs/inode.c:1887 d_delete_notify include/linux/fsnotify.h:332 [inline] vfs_rmdir fs/namei.c:4353 [inline] vfs_rmdir+0x487/0x690 fs/namei.c:4317 do_rmdir+0x3a2/0x410 fs/namei.c:4399 __do_sys_unlinkat fs/namei.c:4575 [inline] __se_sys_unlinkat fs/namei.c:4569 [inline] __x64_sys_unlinkat+0xef/0x130 fs/namei.c:4569 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 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-executor/5236: #0: ffff8880227e2420 (sb_writers#15){.+.+}-{0:0}, at: do_rmdir+0x1e4/0x410 fs/namei.c:4383 #1: ffff88807afb2640 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline] #1: ffff88807afb2640 (&type->i_mutex_dir_key#10/1){+.+.}-{3:3}, at: do_rmdir+0x235/0x410 fs/namei.c:4387 #2: ffff88804f59cbd0 (&osb->nfs_sync_rwlock){.+.+}-{3:3}, at: ocfs2_nfs_sync_lock+0xe5/0x2e0 fs/ocfs2/dlmglue.c:2876 #3: ffff88807afb5f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #3: ffff88807afb5f40 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}, at: ocfs2_wipe_inode+0x2e6/0x1220 fs/ocfs2/inode.c:776 stack backtrace: CPU: 0 UID: 0 PID: 5236 Comm: syz-executor Not tainted 6.11.0-syzkaller-12113-ge7ed34365879 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_circular_bug+0x41c/0x610 kernel/locking/lockdep.c:2074 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x250b/0x3ce0 kernel/locking/lockdep.c:5202 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 down_write+0x93/0x200 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_remove_inode+0x15c/0x8a0 fs/ocfs2/inode.c:655 ocfs2_wipe_inode+0x455/0x1220 fs/ocfs2/inode.c:818 ocfs2_delete_inode fs/ocfs2/inode.c:1079 [inline] ocfs2_evict_inode+0x6c5/0x15d0 fs/ocfs2/inode.c:1216 evict+0x40c/0x970 fs/inode.c:723 iput_final fs/inode.c:1875 [inline] iput fs/inode.c:1901 [inline] iput+0x530/0x890 fs/inode.c:1887 d_delete_notify include/linux/fsnotify.h:332 [inline] vfs_rmdir fs/namei.c:4353 [inline] vfs_rmdir+0x487/0x690 fs/namei.c:4317 do_rmdir+0x3a2/0x410 fs/namei.c:4399 __do_sys_unlinkat fs/namei.c:4575 [inline] __se_sys_unlinkat fs/namei.c:4569 [inline] __x64_sys_unlinkat+0xef/0x130 fs/namei.c:4569 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcf15b7d5d7 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 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:00007ffff1fa0fd8 EFLAGS: 00000207 ORIG_RAX: 0000000000000107 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007fcf15b7d5d7 RDX: 0000000000000200 RSI: 00007ffff1fa2180 RDI: 00000000ffffff9c RBP: 00007fcf15bf0134 R08: 0000555573d0e66b R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000207 R12: 00007ffff1fa2180 R13: 00007fcf15bf0134 R14: 0000000000042eb7 R15: 00007ffff1fa4330