EXT4-fs error (device loop2): ext4_orphan_get:1396: inode #15: comm syz.2.472: iget: bad extended attribute block 19 EXT4-fs error (device loop2): ext4_orphan_get:1401: comm syz.2.472: couldn't read orphan inode 15 (err -117) EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback. ====================================================== WARNING: possible circular locking dependency detected 6.1.105-syzkaller #0 Not tainted ------------------------------------------------------ syz.2.472/6260 is trying to acquire lock: ffff888074a15cd0 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_map_blocks+0x379/0x1cb0 fs/ext4/inode.c:603 but task is already holding lock: ffff88805ab8a208 (&s->s_dquot.dqio_sem){++++}-{3:3}, at: v2_write_dquot+0x9b/0x190 fs/quota/quota_v2.c:354 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&s->s_dquot.dqio_sem){++++}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 v2_read_dquot+0x4a/0x100 fs/quota/quota_v2.c:332 dquot_acquire+0x188/0x680 fs/quota/dquot.c:463 ext4_acquire_dquot+0x2eb/0x4a0 fs/ext4/super.c:6773 dqget+0x74e/0xe30 fs/quota/dquot.c:986 __dquot_initialize+0x2d9/0xea0 fs/quota/dquot.c:1516 ext4_symlink+0x1de/0xb40 fs/ext4/namei.c:3429 vfs_symlink+0x247/0x3d0 fs/namei.c:4473 do_symlinkat+0x21e/0x390 fs/namei.c:4502 __do_sys_symlink fs/namei.c:4524 [inline] __se_sys_symlink fs/namei.c:4522 [inline] __x64_sys_symlink+0x7a/0x90 fs/namei.c:4522 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #1 (&dquot->dq_lock){+.+.}-{3:3}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x132/0xd80 kernel/locking/mutex.c:747 dquot_commit+0x57/0x510 fs/quota/dquot.c:507 ext4_write_dquot+0x1fd/0x360 fs/ext4/super.c:6753 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0xf7/0x400 fs/quota/dquot.c:412 __dquot_free_space+0x956/0xe70 fs/quota/dquot.c:1941 dquot_free_space_nodirty include/linux/quotaops.h:379 [inline] dquot_free_space include/linux/quotaops.h:384 [inline] dquot_free_block include/linux/quotaops.h:395 [inline] ext4_mb_clear_bb fs/ext4/mballoc.c:6145 [inline] ext4_free_blocks+0x1fb8/0x3020 fs/ext4/mballoc.c:6275 ext4_remove_blocks fs/ext4/extents.c:2521 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2687 [inline] ext4_ext_remove_space+0x22bb/0x4f30 fs/ext4/extents.c:2935 ext4_ext_truncate+0x201/0x360 fs/ext4/extents.c:4447 ext4_truncate+0xa1d/0x1290 fs/ext4/inode.c:4288 ext4_evict_inode+0xb68/0x1150 fs/ext4/inode.c:286 evict+0x2a4/0x620 fs/inode.c:666 d_delete_notify include/linux/fsnotify.h:267 [inline] vfs_rmdir+0x381/0x4b0 fs/namei.c:4206 do_rmdir+0x3a2/0x590 fs/namei.c:4254 __do_sys_unlinkat fs/namei.c:4434 [inline] __se_sys_unlinkat fs/namei.c:4428 [inline] __x64_sys_unlinkat+0xdc/0xf0 fs/namei.c:4428 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 -> #0 (&ei->i_data_sem/2){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ext4_map_blocks+0x379/0x1cb0 fs/ext4/inode.c:603 ext4_getblk+0x1eb/0x7c0 fs/ext4/inode.c:889 ext4_bread+0x2a/0x170 fs/ext4/inode.c:945 ext4_quota_write+0x21e/0x570 fs/ext4/super.c:7147 write_blk fs/quota/quota_tree.c:64 [inline] get_free_dqblk+0x340/0x6c0 fs/quota/quota_tree.c:130 do_insert_tree+0x299/0x1ae0 fs/quota/quota_tree.c:340 do_insert_tree+0x72a/0x1ae0 fs/quota/quota_tree.c:375 do_insert_tree+0x72a/0x1ae0 fs/quota/quota_tree.c:375 do_insert_tree+0x72a/0x1ae0 fs/quota/quota_tree.c:375 dq_insert_tree fs/quota/quota_tree.c:401 [inline] qtree_write_dquot+0x3b9/0x530 fs/quota/quota_tree.c:420 v2_write_dquot+0x11c/0x190 fs/quota/quota_v2.c:358 dquot_acquire+0x34d/0x680 fs/quota/dquot.c:472 ext4_acquire_dquot+0x2eb/0x4a0 fs/ext4/super.c:6773 dqget+0x74e/0xe30 fs/quota/dquot.c:986 dquot_set_dqblk+0x27/0xf20 fs/quota/dquot.c:2832 quota_setquota+0x6d3/0x840 fs/quota/quota.c:310 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl+0x2b1/0x770 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 other info that might help us debug this: Chain exists of: &ei->i_data_sem/2 --> &dquot->dq_lock --> &s->s_dquot.dqio_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&s->s_dquot.dqio_sem); lock(&dquot->dq_lock); lock(&s->s_dquot.dqio_sem); lock(&ei->i_data_sem/2); *** DEADLOCK *** 3 locks held by syz.2.472/6260: #0: ffff88805ab8a0e0 (&type->s_umount_key#31){++++}-{3:3}, at: user_get_super+0x11a/0x250 fs/super.c:889 #1: ffff888057d62968 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_acquire+0x64/0x680 fs/quota/dquot.c:460 #2: ffff88805ab8a208 (&s->s_dquot.dqio_sem){++++}-{3:3}, at: v2_write_dquot+0x9b/0x190 fs/quota/quota_v2.c:354 stack backtrace: CPU: 1 PID: 6260 Comm: syz.2.472 Not tainted 6.1.105-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 down_read+0xad/0xa30 kernel/locking/rwsem.c:1520 ext4_map_blocks+0x379/0x1cb0 fs/ext4/inode.c:603 ext4_getblk+0x1eb/0x7c0 fs/ext4/inode.c:889 ext4_bread+0x2a/0x170 fs/ext4/inode.c:945 ext4_quota_write+0x21e/0x570 fs/ext4/super.c:7147 write_blk fs/quota/quota_tree.c:64 [inline] get_free_dqblk+0x340/0x6c0 fs/quota/quota_tree.c:130 do_insert_tree+0x299/0x1ae0 fs/quota/quota_tree.c:340 do_insert_tree+0x72a/0x1ae0 fs/quota/quota_tree.c:375 do_insert_tree+0x72a/0x1ae0 fs/quota/quota_tree.c:375 do_insert_tree+0x72a/0x1ae0 fs/quota/quota_tree.c:375 dq_insert_tree fs/quota/quota_tree.c:401 [inline] qtree_write_dquot+0x3b9/0x530 fs/quota/quota_tree.c:420 v2_write_dquot+0x11c/0x190 fs/quota/quota_v2.c:358 dquot_acquire+0x34d/0x680 fs/quota/dquot.c:472 ext4_acquire_dquot+0x2eb/0x4a0 fs/ext4/super.c:6773 dqget+0x74e/0xe30 fs/quota/dquot.c:986 dquot_set_dqblk+0x27/0xf20 fs/quota/dquot.c:2832 quota_setquota+0x6d3/0x840 fs/quota/quota.c:310 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl+0x2b1/0x770 fs/quota/quota.c:916 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f76acb799b9 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:00007f76ad8ab038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f76acd15f80 RCX: 00007f76acb799b9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: ffffffff80000800 RBP: 00007f76acbe78d8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f76acd15f80 R15: 00007ffea1a60a68 EXT4-fs error (device loop2): ext4_validate_block_bitmap:438: comm syz.2.472: bg 0: block 65: padding at end of block bitmap is not set Quota error (device loop2): write_blk: dquota write failed Quota error (device loop2): qtree_write_dquot: Error -117 occurred while creating quota EXT4-fs error (device loop2): ext4_acquire_dquot:6777: comm syz.2.472: Failed to acquire dquot type 0 EXT4-fs (loop2): unmounting filesystem.