ocfs2: Mounting device (7,1) on (node local, slot 0) with ordered data mode. ====================================================== WARNING: possible circular locking dependency detected 6.1.114-syzkaller #0 Not tainted ------------------------------------------------------ syz.1.3043/11702 is trying to acquire lock: ffff0000d9516650 (sb_internal#2){.+.+}-{0:0}, at: ocfs2_acquire_dquot+0x3d8/0xb1c fs/ocfs2/quota_global.c:843 but task is already holding lock: ffff0000f7c2b120 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1d4/0x260 fs/ocfs2/quota_global.c:314 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1573 ocfs2_lock_global_qf+0x1d4/0x260 fs/ocfs2/quota_global.c:314 ocfs2_acquire_dquot+0x27c/0xb1c fs/ocfs2/quota_global.c:811 dqget+0x660/0xcec fs/quota/dquot.c:986 dquot_get_next_dqblk+0xb8/0x348 fs/quota/dquot.c:2718 quota_getnextquota+0x264/0x650 fs/quota/quota.c:250 do_quotactl+0x52c/0x698 fs/quota/quota.c:800 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl fs/quota/quota.c:916 [inline] __arm64_sys_quotactl+0x2d8/0x7a0 fs/quota/quota.c:916 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #5 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1573 inode_lock include/linux/fs.h:758 [inline] ocfs2_lock_global_qf+0x1b8/0x260 fs/ocfs2/quota_global.c:313 ocfs2_acquire_dquot+0x27c/0xb1c fs/ocfs2/quota_global.c:811 dqget+0x660/0xcec fs/quota/dquot.c:986 dquot_get_next_dqblk+0xb8/0x348 fs/quota/dquot.c:2718 quota_getnextquota+0x264/0x650 fs/quota/quota.c:250 do_quotactl+0x52c/0x698 fs/quota/quota.c:800 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl fs/quota/quota.c:916 [inline] __arm64_sys_quotactl+0x2d8/0x7a0 fs/quota/quota.c:916 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #4 (&dquot->dq_lock){+.+.}-{3:3}: __mutex_lock_common+0x190/0x21a0 kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 dquot_commit+0x54/0x240 fs/quota/dquot.c:507 ext4_write_dquot+0x1b4/0x314 fs/ext4/super.c:6777 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6837 mark_dquot_dirty fs/quota/dquot.c:372 [inline] mark_all_dquot_dirty+0x108/0x424 fs/quota/dquot.c:412 __dquot_free_space+0x840/0xce4 fs/quota/dquot.c:1940 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:6143 [inline] ext4_free_blocks+0x1b14/0x2b64 fs/ext4/mballoc.c:6273 ext4_remove_blocks fs/ext4/extents.c:2525 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2691 [inline] ext4_ext_remove_space+0x1bd0/0x4544 fs/ext4/extents.c:2939 ext4_ext_truncate+0x168/0x210 fs/ext4/extents.c:4469 ext4_truncate+0xa08/0x1178 fs/ext4/inode.c:4288 ext4_evict_inode+0xc3c/0x12cc fs/ext4/inode.c:286 evict+0x418/0x894 fs/inode.c:701 iput_final fs/inode.c:1830 [inline] iput+0x7c0/0x8a4 fs/inode.c:1856 do_unlinkat+0x530/0x70c fs/namei.c:4397 __do_sys_unlinkat fs/namei.c:4433 [inline] __se_sys_unlinkat fs/namei.c:4426 [inline] __arm64_sys_unlinkat+0xcc/0xfc fs/namei.c:4426 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #3 (&ei->i_data_sem){++++}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1573 ext4_truncate+0x7e0/0x1178 fs/ext4/inode.c:4283 ext4_setattr+0xda0/0x14e8 fs/ext4/inode.c:5601 notify_change+0xb58/0xe1c fs/attr.c:499 do_truncate+0x1c0/0x28c fs/open.c:65 do_sys_ftruncate+0x288/0x31c fs/open.c:193 __do_sys_ftruncate fs/open.c:204 [inline] __se_sys_ftruncate fs/open.c:202 [inline] __arm64_sys_ftruncate+0x60/0x74 fs/open.c:202 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #2 (jbd2_handle){++++}-{0:0}: start_this_handle+0x1140/0x13ac fs/jbd2/transaction.c:463 jbd2__journal_start+0x298/0x544 fs/jbd2/transaction.c:520 jbd2_journal_start+0x3c/0x4c fs/jbd2/transaction.c:559 ocfs2_start_trans+0x3e8/0x73c fs/ocfs2/journal.c:354 ocfs2_setattr+0xb14/0x1b3c fs/ocfs2/file.c:1260 notify_change+0xb58/0xe1c fs/attr.c:499 chmod_common+0x23c/0x418 fs/open.c:606 do_fchmodat fs/open.c:645 [inline] __do_sys_fchmodat fs/open.c:658 [inline] __se_sys_fchmodat fs/open.c:655 [inline] __arm64_sys_fchmodat+0x118/0x1dc fs/open.c:655 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #1 (&journal->j_trans_barrier){.+.+}-{3:3}: down_read+0x64/0x308 kernel/locking/rwsem.c:1520 ocfs2_start_trans+0x3dc/0x73c fs/ocfs2/journal.c:352 ocfs2_setattr+0xb14/0x1b3c fs/ocfs2/file.c:1260 notify_change+0xb58/0xe1c fs/attr.c:499 chmod_common+0x23c/0x418 fs/open.c:606 do_fchmodat fs/open.c:645 [inline] __do_sys_fchmodat fs/open.c:658 [inline] __se_sys_fchmodat fs/open.c:655 [inline] __arm64_sys_fchmodat+0x118/0x1dc fs/open.c:655 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #0 (sb_internal#2){.+.+}-{0:0}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1891 [inline] sb_start_intwrite include/linux/fs.h:2013 [inline] ocfs2_start_trans+0x260/0x73c fs/ocfs2/journal.c:350 ocfs2_acquire_dquot+0x3d8/0xb1c fs/ocfs2/quota_global.c:843 dqget+0x660/0xcec fs/quota/dquot.c:986 dquot_get_next_dqblk+0xb8/0x348 fs/quota/dquot.c:2718 quota_getnextquota+0x264/0x650 fs/quota/quota.c:250 do_quotactl+0x52c/0x698 fs/quota/quota.c:800 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl fs/quota/quota.c:916 [inline] __arm64_sys_quotactl+0x2d8/0x7a0 fs/quota/quota.c:916 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 other info that might help us debug this: Chain exists of: sb_internal#2 --> &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(sb_internal#2); *** DEADLOCK *** 4 locks held by syz.1.3043/11702: #0: ffff0000d95160e0 (&type->s_umount_key#48){++++}-{3:3}, at: user_get_super+0x11c/0x240 fs/super.c:889 #1: ffff0000f7c500a8 (&dquot->dq_lock){+.+.}-{3:3}, at: ocfs2_acquire_dquot+0x270/0xb1c fs/ocfs2/quota_global.c:806 #2: ffff0000f7c2b488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline] #2: ffff0000f7c2b488 (&ocfs2_sysfile_lock_key[args->fi_sysfile_type]#7){+.+.}-{3:3}, at: ocfs2_lock_global_qf+0x1b8/0x260 fs/ocfs2/quota_global.c:313 #3: ffff0000f7c2b120 (&ocfs2_quota_ip_alloc_sem_key){++++}-{3:3}, at: ocfs2_lock_global_qf+0x1d4/0x260 fs/ocfs2/quota_global.c:314 stack backtrace: CPU: 1 PID: 11702 Comm: syz.1.3043 Not tainted 6.1.114-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x150/0x1b8 kernel/locking/lockdep.c:2048 check_noncircular+0x2cc/0x378 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 kernel/locking/lockdep.c:3825 [inline] __lock_acquire+0x3338/0x7680 kernel/locking/lockdep.c:5049 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5662 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1891 [inline] sb_start_intwrite include/linux/fs.h:2013 [inline] ocfs2_start_trans+0x260/0x73c fs/ocfs2/journal.c:350 ocfs2_acquire_dquot+0x3d8/0xb1c fs/ocfs2/quota_global.c:843 dqget+0x660/0xcec fs/quota/dquot.c:986 dquot_get_next_dqblk+0xb8/0x348 fs/quota/dquot.c:2718 quota_getnextquota+0x264/0x650 fs/quota/quota.c:250 do_quotactl+0x52c/0x698 fs/quota/quota.c:800 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl fs/quota/quota.c:916 [inline] __arm64_sys_quotactl+0x2d8/0x7a0 fs/quota/quota.c:916 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585