loop0: detected capacity change from 0 to 262144 JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0 Not tainted ------------------------------------------------------ syz.0.0/5329 is trying to acquire lock: ffff8880445dea20 (&oi->ip_alloc_sem){++++}-{4:4}, at: ocfs2_xattr_ibody_find+0x134/0x7c0 fs/ocfs2/xattr.c:2689 but task is already holding lock: ffff8880445deab8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940 fs/ocfs2/xattr.c:3583 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&oi->ip_xattr_sem){++++}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_read+0xb3/0xa50 kernel/locking/rwsem.c:1524 ocfs2_init_acl+0x39d/0x960 fs/ocfs2/acl.c:366 ocfs2_mknod+0x1c09/0x2b30 fs/ocfs2/namei.c:410 ocfs2_create+0x1ad/0x480 fs/ocfs2/namei.c:673 lookup_open fs/namei.c:3666 [inline] open_last_lookups fs/namei.c:3765 [inline] path_openat+0x194b/0x35d0 fs/namei.c:4001 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0x249/0x2a0 fs/open.c:1455 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (jbd2_handle){++++}-{0:0}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 start_this_handle+0x1ee4/0x21a0 fs/jbd2/transaction.c:444 jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:501 jbd2_journal_start+0x29/0x40 fs/jbd2/transaction.c:540 ocfs2_start_trans+0x3cd/0x710 fs/ocfs2/journal.c:352 ocfs2_mknod+0x1510/0x2b30 fs/ocfs2/namei.c:361 ocfs2_create+0x1ad/0x480 fs/ocfs2/namei.c:673 lookup_open fs/namei.c:3666 [inline] open_last_lookups fs/namei.c:3765 [inline] path_openat+0x194b/0x35d0 fs/namei.c:4001 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0x249/0x2a0 fs/open.c:1455 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&journal->j_trans_barrier){.+.+}-{4:4}: lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_read+0xb3/0xa50 kernel/locking/rwsem.c:1524 ocfs2_start_trans+0x3c2/0x710 fs/ocfs2/journal.c:350 ocfs2_mknod+0x1510/0x2b30 fs/ocfs2/namei.c:361 ocfs2_create+0x1ad/0x480 fs/ocfs2/namei.c:673 lookup_open fs/namei.c:3666 [inline] open_last_lookups fs/namei.c:3765 [inline] path_openat+0x194b/0x35d0 fs/namei.c:4001 do_filp_open+0x284/0x4e0 fs/namei.c:4031 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0x249/0x2a0 fs/open.c:1455 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (sb_internal#2){.+.+}-{0:0}: reacquire_held_locks+0x12a/0x1e0 kernel/locking/lockdep.c:5383 __lock_release kernel/locking/lockdep.c:5572 [inline] lock_release+0x27a/0x3e0 kernel/locking/lockdep.c:5887 up_write+0x7b/0x590 kernel/locking/rwsem.c:1629 inode_unlock include/linux/fs.h:872 [inline] ocfs2_free_ac_resource fs/ocfs2/suballoc.c:130 [inline] ocfs2_free_alloc_context+0x95/0x1a0 fs/ocfs2/suballoc.c:144 ocfs2_write_begin_nolock+0x4db5/0x4e80 fs/ocfs2/aops.c:1803 ocfs2_write_begin+0x207/0x3a0 fs/ocfs2/aops.c:1882 generic_perform_write+0x329/0xa10 mm/filemap.c:4102 ocfs2_file_write_iter+0x190f/0x20d0 fs/ocfs2/file.c:2469 do_iter_readv_writev+0x71f/0x9d0 fs/read_write.c:-1 vfs_writev+0x38d/0xbc0 fs/read_write.c:1055 do_pwritev fs/read_write.c:1151 [inline] __do_sys_pwritev2 fs/read_write.c:1209 [inline] __se_sys_pwritev2+0x1b8/0x2d0 fs/read_write.c:1200 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (&oi->ip_alloc_sem){++++}-{4:4}: check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_read+0xb3/0xa50 kernel/locking/rwsem.c:1524 ocfs2_xattr_ibody_find+0x134/0x7c0 fs/ocfs2/xattr.c:2689 ocfs2_xattr_set+0x64c/0x1940 fs/ocfs2/xattr.c:3588 ocfs2_set_acl+0x4dd/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x24c/0x3c0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_remove_acl+0x4cb/0x770 fs/posix_acl.c:1241 ovl_do_remove_acl fs/overlayfs/overlayfs.h:353 [inline] ovl_workdir_create+0x5a7/0x940 fs/overlayfs/super.c:353 ovl_make_workdir fs/overlayfs/super.c:669 [inline] ovl_get_workdir+0x32f/0x19e0 fs/overlayfs/super.c:827 ovl_fill_super+0x1386/0x3720 fs/overlayfs/super.c:1401 vfs_get_super fs/super.c:1280 [inline] get_tree_nodev+0xb7/0x140 fs/super.c:1299 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3879 do_mount fs/namespace.c:4219 [inline] __do_sys_mount fs/namespace.c:4430 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4407 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: &oi->ip_alloc_sem --> jbd2_handle --> &oi->ip_xattr_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&oi->ip_xattr_sem); lock(jbd2_handle); lock(&oi->ip_xattr_sem); rlock(&oi->ip_alloc_sem); *** DEADLOCK *** 5 locks held by syz.0.0/5329: #0: ffff8880332d60e0 (&type->s_umount_key#50/1){+.+.}-{4:4}, at: alloc_super+0x221/0x9d0 fs/super.c:344 #1: ffff888000be8420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:556 #2: ffff8880445dd100 (&sb->s_type->i_mutex_key#20/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:902 [inline] #2: ffff8880445dd100 (&sb->s_type->i_mutex_key#20/1){+.+.}-{4:4}, at: ovl_workdir_create+0x14f/0x940 fs/overlayfs/super.c:302 #3: ffff8880445ded80 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline] #3: ffff8880445ded80 (&sb->s_type->i_mutex_key#20){+.+.}-{4:4}, at: vfs_remove_acl+0x102/0x770 fs/posix_acl.c:1222 #4: ffff8880445deab8 (&oi->ip_xattr_sem){++++}-{4:4}, at: ocfs2_xattr_set+0x635/0x1940 fs/ocfs2/xattr.c:3583 stack backtrace: CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x2e1/0x300 kernel/locking/lockdep.c:2079 check_noncircular+0x142/0x160 kernel/locking/lockdep.c:2211 check_prev_add kernel/locking/lockdep.c:3166 [inline] check_prevs_add kernel/locking/lockdep.c:3285 [inline] validate_chain+0xa69/0x24e0 kernel/locking/lockdep.c:3909 __lock_acquire+0xad5/0xd80 kernel/locking/lockdep.c:5235 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 down_read+0xb3/0xa50 kernel/locking/rwsem.c:1524 ocfs2_xattr_ibody_find+0x134/0x7c0 fs/ocfs2/xattr.c:2689 ocfs2_xattr_set+0x64c/0x1940 fs/ocfs2/xattr.c:3588 ocfs2_set_acl+0x4dd/0x590 fs/ocfs2/acl.c:254 ocfs2_iop_set_acl+0x24c/0x3c0 fs/ocfs2/acl.c:286 set_posix_acl fs/posix_acl.c:954 [inline] vfs_remove_acl+0x4cb/0x770 fs/posix_acl.c:1241 ovl_do_remove_acl fs/overlayfs/overlayfs.h:353 [inline] ovl_workdir_create+0x5a7/0x940 fs/overlayfs/super.c:353 ovl_make_workdir fs/overlayfs/super.c:669 [inline] ovl_get_workdir+0x32f/0x19e0 fs/overlayfs/super.c:827 ovl_fill_super+0x1386/0x3720 fs/overlayfs/super.c:1401 vfs_get_super fs/super.c:1280 [inline] get_tree_nodev+0xb7/0x140 fs/super.c:1299 vfs_get_tree+0x90/0x2b0 fs/super.c:1759 do_new_mount+0x2cf/0xb70 fs/namespace.c:3879 do_mount fs/namespace.c:4219 [inline] __do_sys_mount fs/namespace.c:4430 [inline] __se_sys_mount+0x38c/0x400 fs/namespace.c:4407 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9d2e98d169 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:00007f9d2f771038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f9d2eba5fa0 RCX: 00007f9d2e98d169 RDX: 0000200000000000 RSI: 0000200000000080 RDI: 0000000000000000 RBP: 00007f9d2ea0e2a0 R08: 0000200000000140 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9d2eba5fa0 R15: 00007fffa0ca4a28 overlayfs: upper fs does not support tmpfile. overlayfs: upper fs does not support RENAME_WHITEOUT. overlayfs: upper fs missing required features.