JBD2: Ignoring recovery information on journal ocfs2: Mounting device (7,6) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 5.15.182-syzkaller #0 Not tainted ------------------------------------------------------ syz.6.1510/11288 is trying to acquire lock: ffff888056c8c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] ffff888056c8c2c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4){+.+.}-{3:3}, at: ocfs2_reserve_local_alloc_bits+0x122/0x24c0 fs/ocfs2/localalloc.c:635 but task is already holding lock: ffff88805cfa8660 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1e5/0x270 fs/ocfs2/quota_global.c:314 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #7 (&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_acquire_dquot+0x29d/0xaf0 fs/ocfs2/quota_global.c:816 dqget+0x778/0xeb0 fs/quota/dquot.c:988 dquot_set_dqblk+0x27/0xf90 fs/quota/dquot.c:2826 quota_setquota+0x4ac/0x530 fs/quota/quota.c:309 __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 -> #6 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}: 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_set_dqblk+0x27/0xf90 fs/quota/dquot.c:2826 quota_setquota+0x4ac/0x530 fs/quota/quota.c:309 __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 -> #5 (&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_alloc_space+0x5d0/0xe20 fs/quota/dquot.c:1752 dquot_alloc_space_nodirty include/linux/quotaops.h:297 [inline] dquot_alloc_space include/linux/quotaops.h:310 [inline] dquot_alloc_block include/linux/quotaops.h:334 [inline] ext4_mb_new_blocks+0xf68/0x4940 fs/ext4/mballoc.c:5739 ext4_ext_map_blocks+0x146c/0x64e0 fs/ext4/extents.c:4339 ext4_map_blocks+0x981/0x1b30 fs/ext4/inode.c:673 ext4_getblk+0x16d/0x630 fs/ext4/inode.c:870 ext4_bread+0x26/0x180 fs/ext4/inode.c:923 ext4_append+0x2c3/0x560 fs/ext4/namei.c:83 ext4_init_new_dir+0x2a2/0x940 fs/ext4/namei.c:3030 ext4_mkdir+0x47d/0xc50 fs/ext4/namei.c:3076 vfs_mkdir+0x387/0x570 fs/namei.c:4065 do_mkdirat+0x1d7/0x5a0 fs/namei.c:4090 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103 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 (&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 -> #3 (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:354 ocfs2_mknod+0xe2f/0x22b0 fs/ocfs2/namei.c:361 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_creat fs/open.c:1345 [inline] __se_sys_creat fs/open.c:1339 [inline] __x64_sys_creat+0x8c/0xb0 fs/open.c:1339 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 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x44/0x2e0 kernel/locking/rwsem.c:1498 ocfs2_start_trans+0x368/0x6c0 fs/ocfs2/journal.c:352 ocfs2_mknod+0xe2f/0x22b0 fs/ocfs2/namei.c:361 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_creat fs/open.c:1345 [inline] __se_sys_creat fs/open.c:1339 [inline] __x64_sys_creat+0x8c/0xb0 fs/open.c:1339 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 (sb_internal#4){.+.+}-{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:350 ocfs2_mknod+0xe2f/0x22b0 fs/ocfs2/namei.c:361 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_creat fs/open.c:1345 [inline] __se_sys_creat fs/open.c:1339 [inline] __x64_sys_creat+0x8c/0xb0 fs/open.c:1339 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]#4){+.+.}-{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_reserve_local_alloc_bits+0x122/0x24c0 fs/ocfs2/localalloc.c:635 ocfs2_reserve_clusters_with_limit+0x1bb/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x2f7/0x5b0 fs/ocfs2/suballoc.c:2669 ocfs2_extend_allocation+0x397/0x1760 fs/ocfs2/file.c:588 ocfs2_extend_no_holes+0x20b/0x490 fs/ocfs2/file.c:1030 ocfs2_acquire_dquot+0x5fe/0xaf0 fs/ocfs2/quota_global.c:841 dqget+0x778/0xeb0 fs/quota/dquot.c:988 dquot_set_dqblk+0x27/0xf90 fs/quota/dquot.c:2826 quota_setquota+0x4ac/0x530 fs/quota/quota.c:309 __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 other info that might help us debug this: Chain exists of: &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4 --> &ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7 --> &ocfs2_quota_ip_alloc_sem_key Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7); lock(&ocfs2_quota_ip_alloc_sem_key); lock(&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#4); *** DEADLOCK *** 4 locks held by syz.6.1510/11288: #0: ffff8880600d00e0 (&type->s_umount_key#114){++++}-{3:3}, at: user_get_super+0x118/0x240 fs/super.c:850 #1: ffff8880722a40a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x290/0xaf0 fs/ocfs2/quota_global.c:811 #2: ffff88805cfa89c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline] #2: ffff88805cfa89c8 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x1c7/0x270 fs/ocfs2/quota_global.c:313 #3: ffff88805cfa8660 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1e5/0x270 fs/ocfs2/quota_global.c:314 stack backtrace: CPU: 0 PID: 11288 Comm: syz.6.1510 Not tainted 5.15.182-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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_reserve_local_alloc_bits+0x122/0x24c0 fs/ocfs2/localalloc.c:635 ocfs2_reserve_clusters_with_limit+0x1bb/0xba0 fs/ocfs2/suballoc.c:1162 ocfs2_reserve_clusters fs/ocfs2/suballoc.c:1223 [inline] ocfs2_lock_allocators+0x2f7/0x5b0 fs/ocfs2/suballoc.c:2669 ocfs2_extend_allocation+0x397/0x1760 fs/ocfs2/file.c:588 ocfs2_extend_no_holes+0x20b/0x490 fs/ocfs2/file.c:1030 ocfs2_acquire_dquot+0x5fe/0xaf0 fs/ocfs2/quota_global.c:841 dqget+0x778/0xeb0 fs/quota/dquot.c:988 dquot_set_dqblk+0x27/0xf90 fs/quota/dquot.c:2826 quota_setquota+0x4ac/0x530 fs/quota/quota.c:309 __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 RIP: 0033:0x7f531d532969 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:00007f531b39a038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007f531d759fa0 RCX: 00007f531d532969 RDX: 000000000000ee00 RSI: 0000200000000240 RDI: ffffffff80000801 RBP: 00007f531d5b4ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000f00 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f531d759fa0 R15: 00007ffc60252308