====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc4-syzkaller-00261-g850925a8133c #0 Not tainted ------------------------------------------------------ syz.7.1014/10598 is trying to acquire lock: ffff888051131538 (&oi->ip_xattr_sem){++++}-{3:3}, at: ocfs2_calc_xattr_init+0x208/0xd70 fs/ocfs2/xattr.c:627 but task is already holding lock: ffff88805a036d80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] ffff88805a036d80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x192/0x4eb0 fs/ocfs2/suballoc.c:786 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]#2){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [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+0x209f/0x4680 fs/ocfs2/inode.c:1216 evict+0x4ea/0x9b0 fs/inode.c:725 ocfs2_dentry_iput+0x232/0x380 fs/ocfs2/dcache.c:411 __dentry_kill+0x20d/0x630 fs/dcache.c:615 dput+0x19f/0x2b0 fs/dcache.c:857 __fput+0x5d2/0x880 fs/file_table.c:439 task_work_run+0x251/0x310 kernel/task_work.c:239 get_signal+0x15e8/0x1740 kernel/signal.c:2690 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]){+.+.}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 inode_lock include/linux/fs.h:815 [inline] ocfs2_del_inode_from_orphan+0x159/0x800 fs/ocfs2/namei.c:2726 ocfs2_dio_end_io_write fs/ocfs2/aops.c:2329 [inline] ocfs2_dio_end_io+0x55b/0x1250 fs/ocfs2/aops.c:2427 dio_complete+0x253/0x6b0 fs/direct-io.c:281 __blockdev_direct_IO+0x3ebd/0x4890 fs/direct-io.c:1303 ocfs2_direct_IO+0x255/0x2c0 fs/ocfs2/aops.c:2464 generic_file_direct_write+0x17c/0x390 mm/filemap.c:3977 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4141 ocfs2_file_write_iter+0x17b1/0x1f50 fs/ocfs2/file.c:2459 do_iter_readv_writev+0x602/0x880 vfs_writev+0x376/0xba0 fs/read_write.c:1064 do_pwritev fs/read_write.c:1165 [inline] __do_sys_pwritev2 fs/read_write.c:1224 [inline] __se_sys_pwritev2+0x1ca/0x2d0 fs/read_write.c:1215 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 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_write+0x99/0x220 kernel/locking/rwsem.c:1577 ocfs2_try_remove_refcount_tree+0xb6/0x330 fs/ocfs2/refcounttree.c:932 ocfs2_truncate_file+0xe08/0x1560 fs/ocfs2/file.c:521 ocfs2_setattr+0x1890/0x1f00 fs/ocfs2/file.c:1212 notify_change+0xbcc/0xe90 fs/attr.c:503 do_truncate+0x220/0x310 fs/open.c:65 handle_truncate fs/namei.c:3395 [inline] do_open fs/namei.c:3778 [inline] path_openat+0x2e1e/0x3590 fs/namei.c:3933 do_filp_open+0x235/0x490 fs/namei.c:3960 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_creat fs/open.c:1508 [inline] __se_sys_creat fs/open.c:1502 [inline] __x64_sys_creat+0x123/0x170 fs/open.c:1502 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 (&oi->ip_xattr_sem){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 ocfs2_calc_xattr_init+0x208/0xd70 fs/ocfs2/xattr.c:627 ocfs2_mknod+0x1231/0x2b40 fs/ocfs2/namei.c:328 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672 vfs_create+0x23e/0x3d0 fs/namei.c:3294 do_mknodat+0x447/0x5b0 fs/namei.c:4185 __do_sys_mknod fs/namei.c:4218 [inline] __se_sys_mknod fs/namei.c:4216 [inline] __x64_sys_mknod+0x8c/0xa0 fs/namei.c:4216 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: &oi->ip_xattr_sem --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type] --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); rlock(&oi->ip_xattr_sem); *** DEADLOCK *** 3 locks held by syz.7.1014/10598: #0: ffff888024b8a420 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515 #1: ffff888051131800 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:850 [inline] #1: ffff888051131800 (&type->i_mutex_dir_key#13/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:4026 #2: ffff88805a036d80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline] #2: ffff88805a036d80 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x192/0x4eb0 fs/ocfs2/suballoc.c:786 stack backtrace: CPU: 0 UID: 0 PID: 10598 Comm: syz.7.1014 Not tainted 6.12.0-rc4-syzkaller-00261-g850925a8133c #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+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 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+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 ocfs2_calc_xattr_init+0x208/0xd70 fs/ocfs2/xattr.c:627 ocfs2_mknod+0x1231/0x2b40 fs/ocfs2/namei.c:328 ocfs2_create+0x1ab/0x480 fs/ocfs2/namei.c:672 vfs_create+0x23e/0x3d0 fs/namei.c:3294 do_mknodat+0x447/0x5b0 fs/namei.c:4185 __do_sys_mknod fs/namei.c:4218 [inline] __se_sys_mknod fs/namei.c:4216 [inline] __x64_sys_mknod+0x8c/0xa0 fs/namei.c:4216 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: 0033:0x7f6f6457e719 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:00007f6f6543f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 RAX: ffffffffffffffda RBX: 00007f6f64735f80 RCX: 00007f6f6457e719 RDX: 000000000000070f RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007f6f645f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6f64735f80 R15: 00007ffcd9c8d948 ocfs2: Unmounting device (7,7) on (node local)