loop0: detected capacity change from 0 to 40427 F2FS-fs (loop0): Mismatch valid blocks 2 vs. 14 ====================================================== WARNING: possible circular locking dependency detected 6.2.0-rc4-syzkaller-16807-gedb2f0dc90f2 #0 Not tainted ------------------------------------------------------ syz-executor.0/9549 is trying to acquire lock: ffff00011568a088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] ffff00011568a088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_handle_error+0x9c/0x17c fs/f2fs/super.c:3926 but task is already holding lock: ffff0001163193b8 (&array[i].journal_rwsem){++++}-{3:3}, at: build_sit_entries+0x568/0x9b8 fs/f2fs/segment.c:4450 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (&array[i].journal_rwsem){++++}-{3:3}: down_read+0x5c/0x78 kernel/locking/rwsem.c:1509 scan_curseg_cache fs/f2fs/node.c:2404 [inline] __f2fs_build_free_nids fs/f2fs/node.c:2516 [inline] f2fs_build_free_nids+0x798/0x8f4 fs/f2fs/node.c:2531 f2fs_build_node_manager+0x628/0x650 fs/f2fs/node.c:3316 f2fs_fill_super+0x1394/0x1e88 fs/f2fs/super.c:4334 mount_bdev+0x1b8/0x210 fs/super.c:1359 f2fs_mount+0x44/0x58 fs/f2fs/super.c:4608 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1489 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3145 path_mount+0x358/0x890 fs/namespace.c:3475 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount fs/namespace.c:3674 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3674 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 -> #5 (&nm_i->nat_tree_lock){++++}-{3:3}: down_read+0x5c/0x78 kernel/locking/rwsem.c:1509 f2fs_down_read fs/f2fs/f2fs.h:2188 [inline] f2fs_get_node_info+0x74/0x458 fs/f2fs/node.c:564 __write_node_page+0x244/0xfcc fs/f2fs/node.c:1616 f2fs_sync_node_pages+0x888/0xdb0 fs/f2fs/node.c:2020 block_operations+0x28c/0x408 fs/f2fs/checkpoint.c:1275 f2fs_write_checkpoint+0x210/0x568 fs/f2fs/checkpoint.c:1655 f2fs_issue_checkpoint+0x1b0/0x244 f2fs_sync_fs+0x8c/0xc8 fs/f2fs/super.c:1669 f2fs_create+0x1e0/0x228 fs/f2fs/namei.c:373 lookup_open fs/namei.c:3413 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x804/0x11f0 fs/namei.c:3711 do_filp_open+0xdc/0x1b8 fs/namei.c:3741 do_sys_openat2+0xb8/0x22c fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __arm64_sys_openat+0xb0/0xe0 fs/open.c:1337 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 -> #4 (&sbi->node_change){++++}-{3:3}: down_read+0x5c/0x78 kernel/locking/rwsem.c:1509 f2fs_do_map_lock+0x5c/0x88 f2fs_vm_page_mkwrite+0x324/0x9a4 fs/f2fs/file.c:116 do_page_mkwrite+0x74/0x288 mm/memory.c:2947 wp_page_shared+0x8c/0x364 mm/memory.c:3295 do_wp_page+0xf8/0xba0 mm/memory.c:3377 handle_pte_fault mm/memory.c:4949 [inline] __handle_mm_fault mm/memory.c:5073 [inline] handle_mm_fault+0x910/0xb28 mm/memory.c:5219 __do_page_fault arch/arm64/mm/fault.c:512 [inline] do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:612 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:831 el0_da+0x70/0x16c arch/arm64/kernel/entry-common.c:515 el0t_64_sync_handler+0xcc/0xf0 arch/arm64/kernel/entry-common.c:658 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 -> #3 (mapping.invalidate_lock#6){.+.+}-{3:3}: down_read+0x5c/0x78 kernel/locking/rwsem.c:1509 filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] f2fs_vm_page_mkwrite+0x18c/0x9a4 fs/f2fs/file.c:104 do_page_mkwrite+0x74/0x288 mm/memory.c:2947 wp_page_shared+0x8c/0x364 mm/memory.c:3295 do_wp_page+0xf8/0xba0 mm/memory.c:3377 handle_pte_fault mm/memory.c:4949 [inline] __handle_mm_fault mm/memory.c:5073 [inline] handle_mm_fault+0x910/0xb28 mm/memory.c:5219 __do_page_fault arch/arm64/mm/fault.c:512 [inline] do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:612 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:831 el0_da+0x70/0x16c arch/arm64/kernel/entry-common.c:515 el0t_64_sync_handler+0xcc/0xf0 arch/arm64/kernel/entry-common.c:658 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 -> #2 (sb_pagefaults#2){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write+0x84/0x1f4 include/linux/fs.h:1814 sb_start_pagefault include/linux/fs.h:1918 [inline] f2fs_vm_page_mkwrite+0x160/0x9a4 fs/f2fs/file.c:99 do_page_mkwrite+0x74/0x288 mm/memory.c:2947 wp_page_shared+0x8c/0x364 mm/memory.c:3295 do_wp_page+0xf8/0xba0 mm/memory.c:3377 handle_pte_fault mm/memory.c:4949 [inline] __handle_mm_fault mm/memory.c:5073 [inline] handle_mm_fault+0x910/0xb28 mm/memory.c:5219 __do_page_fault arch/arm64/mm/fault.c:512 [inline] do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:612 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:831 el0_da+0x70/0x16c arch/arm64/kernel/entry-common.c:515 el0t_64_sync_handler+0xcc/0xf0 arch/arm64/kernel/entry-common.c:658 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 -> #1 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0x7c/0xb4 mm/memory.c:5647 _copy_to_user include/linux/uaccess.h:143 [inline] copy_to_user include/linux/uaccess.h:169 [inline] f2fs_ioc_get_encryption_pwsalt fs/f2fs/file.c:2365 [inline] __f2fs_ioctl+0x320c/0x3320 fs/f2fs/file.c:4169 f2fs_ioctl+0x74/0xbc fs/f2fs/file.c:4242 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xd0/0x140 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 -> #0 (&sbi->sb_lock){++++}-{3:3}: check_prev_add kernel/locking/lockdep.c:3097 [inline] check_prevs_add kernel/locking/lockdep.c:3216 [inline] validate_chain kernel/locking/lockdep.c:3831 [inline] __lock_acquire+0x1530/0x3084 kernel/locking/lockdep.c:5055 lock_acquire+0x100/0x1f8 kernel/locking/lockdep.c:5668 down_write+0x5c/0x88 kernel/locking/rwsem.c:1562 f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] f2fs_handle_error+0x9c/0x17c fs/f2fs/super.c:3926 check_block_count+0x210/0x268 build_sit_entries+0x638/0x9b8 fs/f2fs/segment.c:4470 f2fs_build_segment_manager+0x334/0x3e8 fs/f2fs/segment.c:5159 f2fs_fill_super+0x135c/0x1e88 fs/f2fs/super.c:4328 mount_bdev+0x1b8/0x210 fs/super.c:1359 f2fs_mount+0x44/0x58 fs/f2fs/super.c:4608 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1489 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3145 path_mount+0x358/0x890 fs/namespace.c:3475 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount fs/namespace.c:3674 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3674 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 other info that might help us debug this: Chain exists of: &sbi->sb_lock --> &nm_i->nat_tree_lock --> &array[i].journal_rwsem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&array[i].journal_rwsem); lock(&nm_i->nat_tree_lock); lock(&array[i].journal_rwsem); lock(&sbi->sb_lock); *** DEADLOCK *** 2 locks held by syz-executor.0/9549: #0: ffff00011631c0e0 (&type->s_umount_key#66/1){+.+.}-{3:3}, at: alloc_super+0xf8/0x430 fs/super.c:228 #1: ffff0001163193b8 (&array[i].journal_rwsem){++++}-{3:3}, at: build_sit_entries+0x568/0x9b8 fs/f2fs/segment.c:4450 stack backtrace: CPU: 1 PID: 9549 Comm: syz-executor.0 Not tainted 6.2.0-rc4-syzkaller-16807-gedb2f0dc90f2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:156 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:163 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x104/0x16c lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_circular_bug+0x2c4/0x2c8 kernel/locking/lockdep.c:2055 check_noncircular+0x14c/0x154 kernel/locking/lockdep.c:2177 check_prev_add kernel/locking/lockdep.c:3097 [inline] check_prevs_add kernel/locking/lockdep.c:3216 [inline] validate_chain kernel/locking/lockdep.c:3831 [inline] __lock_acquire+0x1530/0x3084 kernel/locking/lockdep.c:5055 lock_acquire+0x100/0x1f8 kernel/locking/lockdep.c:5668 down_write+0x5c/0x88 kernel/locking/rwsem.c:1562 f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] f2fs_handle_error+0x9c/0x17c fs/f2fs/super.c:3926 check_block_count+0x210/0x268 build_sit_entries+0x638/0x9b8 fs/f2fs/segment.c:4470 f2fs_build_segment_manager+0x334/0x3e8 fs/f2fs/segment.c:5159 f2fs_fill_super+0x135c/0x1e88 fs/f2fs/super.c:4328 mount_bdev+0x1b8/0x210 fs/super.c:1359 f2fs_mount+0x44/0x58 fs/f2fs/super.c:4608 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1489 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3145 path_mount+0x358/0x890 fs/namespace.c:3475 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount fs/namespace.c:3674 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3674 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x104 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 F2FS-fs (loop0): Failed to initialize F2FS segment manager (-117)