ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 5.15.184-syzkaller #0 Not tainted ------------------------------------------------------ syz.0.110/5918 is trying to acquire lock: ffff8880701842c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] ffff8880701842c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x1c7/0x270 fs/ocfs2/quota_global.c:313 but task is already holding lock: ffff888026daa0a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x290/0xaf0 fs/ocfs2/quota_global.c:811 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&dquot->dq_lock){+.+.}-{3:3}: __mutex_lock_common+0x1eb/0x2390 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 dquot_commit+0x5a/0x410 fs/quota/dquot.c:507 ext4_write_dquot+0x1f0/0x360 fs/ext4/super.c:6180 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0xf9/0x400 fs/quota/dquot.c:412 __dquot_free_space+0x7ca/0xb90 fs/quota/dquot.c:1942 dquot_free_space_nodirty include/linux/quotaops.h:376 [inline] dquot_free_space include/linux/quotaops.h:381 [inline] dquot_free_block include/linux/quotaops.h:392 [inline] ext4_mb_clear_bb fs/ext4/mballoc.c:6156 [inline] ext4_free_blocks+0x1af5/0x2480 fs/ext4/mballoc.c:6286 ext4_remove_blocks fs/ext4/extents.c:2523 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2689 [inline] ext4_ext_remove_space+0x1eaa/0x4390 fs/ext4/extents.c:2937 ext4_ext_truncate+0x192/0x240 fs/ext4/extents.c:4471 ext4_truncate+0x9f1/0x10d0 fs/ext4/inode.c:4250 ext4_evict_inode+0xb43/0x1080 fs/ext4/inode.c:289 evict+0x485/0x870 fs/inode.c:647 d_delete_notify include/linux/fsnotify.h:267 [inline] vfs_rmdir+0x3b4/0x430 fs/namei.c:4162 do_rmdir+0x295/0x710 fs/namei.c:4210 __do_sys_unlinkat fs/namei.c:4390 [inline] __se_sys_unlinkat fs/namei.c:4384 [inline] __x64_sys_unlinkat+0xc0/0xe0 fs/namei.c:4384 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #5 (&ei->i_data_sem){++++}-{3:3}: down_write+0x38/0x60 kernel/locking/rwsem.c:1551 ext4_truncate+0x96d/0x10d0 fs/ext4/inode.c:4245 ext4_setattr+0xffe/0x19e0 fs/ext4/inode.c:5582 notify_change+0xbcd/0xee0 fs/attr.c:505 do_truncate+0x197/0x220 fs/open.c:65 do_sys_ftruncate+0x31b/0x3d0 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #4 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1338/0x15a0 fs/jbd2/transaction.c:464 jbd2__journal_start+0x2b7/0x5a0 fs/jbd2/transaction.c:521 jbd2_journal_start+0x26/0x30 fs/jbd2/transaction.c:560 ocfs2_start_trans+0x374/0x6c0 fs/ocfs2/journal.c:376 ocfs2_modify_bh+0xe5/0x470 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x13b1/0x16e0 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x756/0xac0 fs/quota/dquot.c:2463 dquot_load_quota_inode+0x2d8/0x5d0 fs/quota/dquot.c:2500 ocfs2_enable_quotas+0x1c3/0x440 fs/ocfs2/super.c:927 ocfs2_fill_super+0x3a1f/0x4d80 fs/ocfs2/super.c:1140 mount_bdev+0x287/0x3c0 fs/super.c:1400 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3014 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #3 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_start_trans+0x368/0x6c0 fs/ocfs2/journal.c:374 ocfs2_modify_bh+0xe5/0x470 fs/ocfs2/quota_local.c:101 ocfs2_local_read_info+0x13b1/0x16e0 fs/ocfs2/quota_local.c:764 dquot_load_quota_sb+0x756/0xac0 fs/quota/dquot.c:2463 dquot_load_quota_inode+0x2d8/0x5d0 fs/quota/dquot.c:2500 ocfs2_enable_quotas+0x1c3/0x440 fs/ocfs2/super.c:927 ocfs2_fill_super+0x3a1f/0x4d80 fs/ocfs2/super.c:1140 mount_bdev+0x287/0x3c0 fs/super.c:1400 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3014 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #2 (sb_internal#2){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1811 [inline] sb_start_intwrite include/linux/fs.h:1928 [inline] ocfs2_start_trans+0x269/0x6c0 fs/ocfs2/journal.c:372 ocfs2_write_info+0x117/0x350 fs/ocfs2/quota_global.c:982 dquot_set_dqinfo+0x459/0x6c0 fs/quota/dquot.c:2904 quota_setinfo+0x2a4/0x2b0 fs/quota/quota.c:173 __do_sys_quotactl fs/quota/quota.c:959 [inline] __se_sys_quotactl+0x295/0x6c0 fs/quota/quota.c:915 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #1 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}: down_write+0x38/0x60 kernel/locking/rwsem.c:1551 ocfs2_lock_global_qf+0x1e5/0x270 fs/ocfs2/quota_global.c:314 ocfs2_write_info+0xd0/0x350 fs/ocfs2/quota_global.c:979 dquot_set_dqinfo+0x459/0x6c0 fs/quota/dquot.c:2904 quota_setinfo+0x2a4/0x2b0 fs/quota/quota.c:173 __do_sys_quotactl fs/quota/quota.c:959 [inline] __se_sys_quotactl+0x295/0x6c0 fs/quota/quota.c:915 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 down_write+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_lock_global_qf+0x1c7/0x270 fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x29d/0xaf0 fs/ocfs2/quota_global.c:816 dqget+0x778/0xeb0 fs/quota/dquot.c:988 __dquot_initialize+0x3b6/0xcb0 fs/quota/dquot.c:1517 ocfs2_get_init_inode+0x138/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x8aa/0x22b0 fs/ocfs2/namei.c:310 ocfs2_create+0x192/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x11e1/0x2f30 fs/namei.c:3739 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769 do_sys_openat2+0x142/0x4a0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1280 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2 --> &ei->i_data_sem --> &dquot->dq_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&dquot->dq_lock); lock(&ei->i_data_sem); lock(&dquot->dq_lock); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#2); *** DEADLOCK *** 4 locks held by syz.0.110/5918: #0: ffff88805caf2460 (sb_writers#13){.+.+}-{0:0}, at: mnt_want_write+0x3d/0x90 fs/namespace.c:377 #1: ffff8880588389c8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #1: ffff8880588389c8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: open_last_lookups fs/namei.c:3529 [inline] #1: ffff8880588389c8 (&type->i_mutex_dir_key#8){+.+.}-{3:3}, at: path_openat+0x7f3/0x2f30 fs/namei.c:3739 #2: ffff8880702b09c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #2: ffff8880702b09c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#3){+.+.}-{3:3}, at: ocfs2_reserve_suballoc_bits+0x161/0x4350 fs/ocfs2/suballoc.c:782 #3: ffff888026daa0a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x290/0xaf0 fs/ocfs2/quota_global.c:811 stack backtrace: CPU: 1 PID: 5918 Comm: syz.0.110 Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain kernel/locking/lockdep.c:3788 [inline] __lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 down_write+0x38/0x60 kernel/locking/rwsem.c:1551 inode_lock include/linux/fs.h:787 [inline] ocfs2_lock_global_qf+0x1c7/0x270 fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x29d/0xaf0 fs/ocfs2/quota_global.c:816 dqget+0x778/0xeb0 fs/quota/dquot.c:988 __dquot_initialize+0x3b6/0xcb0 fs/quota/dquot.c:1517 ocfs2_get_init_inode+0x138/0x1b0 fs/ocfs2/namei.c:202 ocfs2_mknod+0x8aa/0x22b0 fs/ocfs2/namei.c:310 ocfs2_create+0x192/0x410 fs/ocfs2/namei.c:674 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x11e1/0x2f30 fs/namei.c:3739 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769 do_sys_openat2+0x142/0x4a0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1280 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f48bb67a169 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:00007f48ba8eb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f48bb892fa0 RCX: 00007f48bb67a169 RDX: 000000000000275a RSI: 00004000000000c0 RDI: ffffffffffffff9c RBP: 00007f48bb6fb2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f48bb892fa0 R15: 00007ffe3dba4228 (syz.0.110,5918,0):ocfs2_block_check_validate:402 ERROR: CRC32 failed: stored: 0x2c7b5077, computed 0x28030c75. Applying ECC. (syz.0.110,5918,0):ocfs2_block_check_validate:416 ERROR: Fixed CRC32 failed: stored: 0x2c7b5077, computed 0x28d1d8ae (syz.0.110,5918,0):ocfs2_read_quota_phys_block:160 ERROR: status = -5 (syz.0.110,5918,0):ocfs2_quota_read:201 ERROR: status = -5 Quota error (device loop0): find_tree_dqentry: Can't read quota tree block 5 Quota error (device loop0): qtree_read_dquot: Can't read quota structure for id 0 (syz.0.110,5918,0):ocfs2_acquire_dquot:878 ERROR: status = -5 (syz.0.110,5918,0):ocfs2_mknod:314 ERROR: status = -5 (syz.0.110,5918,0):ocfs2_mknod:502 ERROR: status = -5 (syz.0.110,5918,0):ocfs2_create:676 ERROR: status = -5