loop0: detected capacity change from 0 to 512 EXT4-fs (loop0): orphan cleanup on readonly fs ====================================================== WARNING: possible circular locking dependency detected 5.15.111-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor263/4218 is trying to acquire lock: ffff0000dc97fe68 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x54/0x240 fs/quota/dquot.c:479 but task is already holding lock: ffff0000df965c30 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7c0/0x1058 fs/ext4/inode.c:4243 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&ei->i_data_sem/2){++++}-{3:3}: down_read+0xbc/0x11c kernel/locking/rwsem.c:1488 ext4_map_blocks+0x2b4/0x19f0 fs/ext4/inode.c:568 ext4_getblk+0x160/0x688 fs/ext4/inode.c:856 ext4_bread+0x3c/0x1d4 fs/ext4/inode.c:909 ext4_quota_read+0x178/0x294 fs/ext4/super.c:6486 v2_read_header fs/quota/quota_v2.c:62 [inline] v2_read_file_info+0x134/0xb6c fs/quota/quota_v2.c:102 dquot_load_quota_sb+0x6f0/0xb1c fs/quota/dquot.c:2402 dquot_load_quota_inode+0x35c/0x5c0 fs/quota/dquot.c:2438 ext4_quota_enable fs/ext4/super.c:6363 [inline] ext4_enable_quotas+0x53c/0xab4 fs/ext4/super.c:6389 ext4_remount+0x1b5c/0x2710 fs/ext4/super.c:5997 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:633 reconfigure_super+0x340/0x690 fs/super.c:916 vfs_fsconfig_locked fs/fsopen.c:254 [inline] __do_sys_fsconfig fs/fsopen.c:439 [inline] __se_sys_fsconfig fs/fsopen.c:314 [inline] __arm64_sys_fsconfig+0xa1c/0xd18 fs/fsopen.c:314 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #1 (&s->s_dquot.dqio_sem){++++}-{3:3}: down_read+0xbc/0x11c kernel/locking/rwsem.c:1488 v2_read_dquot+0x50/0x11c fs/quota/quota_v2.c:332 dquot_acquire+0x130/0x5e4 fs/quota/dquot.c:435 ext4_acquire_dquot+0x270/0x398 fs/ext4/super.c:6166 dqget+0x848/0xc58 fs/quota/dquot.c:914 __dquot_initialize+0x344/0xb54 fs/quota/dquot.c:1492 dquot_initialize+0x24/0x34 fs/quota/dquot.c:1550 ext4_process_orphan+0x5c/0x2b8 fs/ext4/orphan.c:329 ext4_orphan_cleanup+0x8bc/0x104c fs/ext4/orphan.c:474 ext4_fill_super+0x7f7c/0x868c fs/ext4/super.c:4964 mount_bdev+0x26c/0x368 fs/super.c:1378 ext4_mount+0x44/0x58 fs/ext4/super.c:6568 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1508 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 -> #0 (&dquot->dq_lock){+.+.}-{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:3787 [inline] __lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 dquot_commit+0x54/0x240 fs/quota/dquot.c:479 ext4_write_dquot+0x1b0/0x284 fs/ext4/super.c:6150 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6198 mark_dquot_dirty fs/quota/dquot.c:346 [inline] mark_all_dquot_dirty fs/quota/dquot.c:384 [inline] __dquot_free_space+0x7e4/0xd70 fs/quota/dquot.c:1907 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:6063 [inline] ext4_free_blocks+0x1ae8/0x2a98 fs/ext4/mballoc.c:6192 ext4_remove_blocks fs/ext4/extents.c:2543 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2709 [inline] ext4_ext_remove_space+0x1c48/0x4254 fs/ext4/extents.c:2957 ext4_ext_truncate+0x188/0x250 fs/ext4/extents.c:4419 ext4_truncate+0x9c4/0x1058 fs/ext4/inode.c:4248 ext4_evict_inode+0xc30/0x124c fs/ext4/inode.c:289 evict+0x260/0x68c fs/inode.c:587 iput_final fs/inode.c:1663 [inline] iput+0x744/0x824 fs/inode.c:1689 ext4_process_orphan+0x244/0x2b8 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x8bc/0x104c fs/ext4/orphan.c:474 ext4_fill_super+0x7f7c/0x868c fs/ext4/super.c:4964 mount_bdev+0x26c/0x368 fs/super.c:1378 ext4_mount+0x44/0x58 fs/ext4/super.c:6568 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1508 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Chain exists of: &dquot->dq_lock --> &s->s_dquot.dqio_sem --> &ei->i_data_sem/2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ei->i_data_sem/2); lock(&s->s_dquot.dqio_sem); lock(&ei->i_data_sem/2); lock(&dquot->dq_lock); *** DEADLOCK *** 4 locks held by syz-executor263/4218: #0: ffff0000dd74c0e0 (&type->s_umount_key#26/1){+.+.}-{3:3}, at: alloc_super+0x1b8/0x844 fs/super.c:229 #1: ffff0000dd74c650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1742 [inline] #1: ffff0000dd74c650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1859 [inline] #1: ffff0000dd74c650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x338/0x124c fs/ext4/inode.c:243 #2: ffff0000df965c30 (&ei->i_data_sem/2){++++}-{3:3}, at: ext4_truncate+0x7c0/0x1058 fs/ext4/inode.c:4243 #3: ffff800014bb7d18 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:268 stack backtrace: CPU: 0 PID: 4218 Comm: syz-executor263 Not tainted 5.15.111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:2011 check_noncircular+0x2cc/0x378 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:3787 [inline] __lock_acquire+0x32cc/0x7620 kernel/locking/lockdep.c:5011 lock_acquire+0x240/0x77c kernel/locking/lockdep.c:5622 __mutex_lock_common+0x194/0x2154 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743 dquot_commit+0x54/0x240 fs/quota/dquot.c:479 ext4_write_dquot+0x1b0/0x284 fs/ext4/super.c:6150 ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6198 mark_dquot_dirty fs/quota/dquot.c:346 [inline] mark_all_dquot_dirty fs/quota/dquot.c:384 [inline] __dquot_free_space+0x7e4/0xd70 fs/quota/dquot.c:1907 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:6063 [inline] ext4_free_blocks+0x1ae8/0x2a98 fs/ext4/mballoc.c:6192 ext4_remove_blocks fs/ext4/extents.c:2543 [inline] ext4_ext_rm_leaf fs/ext4/extents.c:2709 [inline] ext4_ext_remove_space+0x1c48/0x4254 fs/ext4/extents.c:2957 ext4_ext_truncate+0x188/0x250 fs/ext4/extents.c:4419 ext4_truncate+0x9c4/0x1058 fs/ext4/inode.c:4248 ext4_evict_inode+0xc30/0x124c fs/ext4/inode.c:289 evict+0x260/0x68c fs/inode.c:587 iput_final fs/inode.c:1663 [inline] iput+0x744/0x824 fs/inode.c:1689 ext4_process_orphan+0x244/0x2b8 fs/ext4/orphan.c:360 ext4_orphan_cleanup+0x8bc/0x104c fs/ext4/orphan.c:474 ext4_fill_super+0x7f7c/0x868c fs/ext4/super.c:4964 mount_bdev+0x26c/0x368 fs/super.c:1378 ext4_mount+0x44/0x58 fs/ext4/super.c:6568 legacy_get_tree+0xd4/0x16c fs/fs_context.c:610 vfs_get_tree+0x90/0x274 fs/super.c:1508 do_new_mount+0x25c/0x8c8 fs/namespace.c:2994 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 EXT4-fs (loop0): 1 orphan inode deleted FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 4218 Comm: syz-executor263 Not tainted 5.15.111-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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 fail_dump lib/fault-inject.c:52 [inline] should_fail+0x400/0x5cc lib/fault-inject.c:146 __should_failslab+0xbc/0x110 mm/failslab.c:33 should_failslab+0x10/0x28 mm/slab_common.c:1337 slab_pre_alloc_hook+0x64/0xe8 mm/slab.h:494 slab_alloc_node mm/slub.c:3134 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x98/0x45c mm/slub.c:3233 ext4_es_alloc_extent fs/ext4/extents_status.c:458 [inline] __es_insert_extent+0x570/0x1270 fs/ext4/extents_status.c:797 ext4_es_cache_extent+0x408/0x6ec fs/ext4/extents_status.c:905 ext4_cache_extents fs/ext4/extents.c:522 [inline] ext4_find_extent+0x478/0xba4 fs/ext4/extents.c:918 ext4_ext_map_blocks+0x294/0x5ff4 fs/ext4/extents.c:4103 ext4_map_blocks+0x31c/0x19f0 fs/ext4/inode.c:570 ext4_getblk+0x160/0x688 fs/ext4/inode.c:856 ext4_bread+0x3c/0x1d4 fs/ext4/inode.c:909 ext4_quota_read+0x178/0x294 fs/ext4/super.c:6486 v2_read_header fs/quota/quota_v2.c:62 [inline] v2_check_quota_file+0xe8/0x368 fs/quota/quota_v2.c:81 dquot_load_quota_sb+0x5b0/0xb1c fs/quota/dquot.c:2395 dquot_load_quota_inode+0x35c/0x5c0 fs/quota/dquot.c:2438 ext4_quota_enable fs/ext4/super.c:6363 [inline] ext4_enable_quotas+0x53c/0xab4 fs/ext4/super.c:6389 ext4_remount+0x1b5c/0x2710 fs/ext4/super.c:5997 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:633 reconfigure_super+0x340/0x690 fs/super.c:916 vfs_fsconfig_locked fs/fsopen.c:254 [inline] __do_sys_fsconfig fs/fsopen.c:439 [inline] __se_sys_fsconfig fs/fsopen.c:314 [inline] __arm64_sys_fsconfig+0xa1c/0xd18 fs/fsopen.c:314 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 EXT4-fs (loop0): re-mounted. Opts: (null). Quota mode: writeback.