F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop1): invalid crc value F2FS-fs (loop1): Found nat_bits in checkpoint F2FS-fs (loop1): Try to recover 1th superblock, ret: 0 F2FS-fs (loop1): Mounted with checkpoint version = 753bd00b ====================================================== WARNING: possible circular locking dependency detected 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0 Not tainted ------------------------------------------------------ syz-executor.1/6777 is trying to acquire lock: ffff88802b2f7318 (&mm->mmap_lock){++++}-{3:3}, at: __might_fault+0xa9/0x180 mm/memory.c:5646 but task is already holding lock: ffff88808782c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] ffff88808782c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_ioc_get_encryption_pwsalt+0x174/0x370 fs/f2fs/file.c:2350 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&sbi->sb_lock){++++}-{3:3}: down_write+0x94/0x220 kernel/locking/rwsem.c:1562 f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] f2fs_handle_error+0x8e/0x200 fs/f2fs/super.c:3926 f2fs_check_nid_range.part.0+0x4d/0x60 fs/f2fs/node.c:39 f2fs_check_nid_range fs/f2fs/node.c:2278 [inline] add_free_nid.isra.0+0x781/0x940 fs/f2fs/node.c:2285 scan_nat_page fs/f2fs/node.c:2387 [inline] __f2fs_build_free_nids+0x5b5/0xe10 fs/f2fs/node.c:2493 f2fs_build_free_nids fs/f2fs/node.c:2531 [inline] f2fs_build_node_manager+0x2007/0x2fb0 fs/f2fs/node.c:3316 f2fs_fill_super+0x3ade/0x7680 fs/f2fs/super.c:4334 mount_bdev+0x351/0x410 fs/super.c:1359 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x2f0 fs/super.c:1489 do_new_mount fs/namespace.c:3145 [inline] path_mount+0x132a/0x1e20 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] __x64_sys_mount+0x283/0x300 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #3 (&nm_i->nat_tree_lock){++++}-{3:3}: down_read+0x9c/0x450 kernel/locking/rwsem.c:1509 f2fs_down_read fs/f2fs/f2fs.h:2188 [inline] f2fs_get_node_info+0x1ac/0x1070 fs/f2fs/node.c:564 f2fs_do_write_data_page+0x7f5/0x1e20 fs/f2fs/data.c:2728 f2fs_write_single_data_page+0x13f0/0x1920 fs/f2fs/data.c:2863 f2fs_write_cache_pages+0xaa8/0x2010 fs/f2fs/data.c:3115 __f2fs_write_data_pages fs/f2fs/data.c:3265 [inline] f2fs_write_data_pages+0x4c7/0x1230 fs/f2fs/data.c:3292 do_writepages+0x1af/0x690 mm/page-writeback.c:2581 filemap_fdatawrite_wbc mm/filemap.c:388 [inline] filemap_fdatawrite_wbc+0x147/0x1b0 mm/filemap.c:378 __filemap_fdatawrite_range+0xb8/0xf0 mm/filemap.c:421 filemap_write_and_wait_range mm/filemap.c:674 [inline] filemap_write_and_wait_range+0xa1/0x120 mm/filemap.c:665 f2fs_collapse_range fs/f2fs/file.c:1443 [inline] f2fs_fallocate+0x10e6/0x3780 fs/f2fs/file.c:1837 vfs_fallocate+0x48b/0xe00 fs/open.c:323 ksys_fallocate fs/open.c:346 [inline] __do_sys_fallocate fs/open.c:354 [inline] __se_sys_fallocate fs/open.c:352 [inline] __x64_sys_fallocate+0xd3/0x140 fs/open.c:352 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #2 (mapping.invalidate_lock#4){++++}-{3:3}: down_read+0x9c/0x450 kernel/locking/rwsem.c:1509 filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] f2fs_vm_page_mkwrite+0x630/0x1c90 fs/f2fs/file.c:104 do_page_mkwrite+0x19b/0x680 mm/memory.c:2947 do_shared_fault mm/memory.c:4579 [inline] do_fault mm/memory.c:4647 [inline] handle_pte_fault mm/memory.c:4931 [inline] __handle_mm_fault+0x23ee/0x3c90 mm/memory.c:5073 handle_mm_fault+0x1b6/0x850 mm/memory.c:5219 do_user_addr_fault+0x475/0x1210 arch/x86/mm/fault.c:1428 handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 -> #1 (sb_pagefaults){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write include/linux/fs.h:1814 [inline] sb_start_pagefault include/linux/fs.h:1918 [inline] f2fs_vm_page_mkwrite+0x48a/0x1c90 fs/f2fs/file.c:99 do_page_mkwrite+0x19b/0x680 mm/memory.c:2947 do_shared_fault mm/memory.c:4579 [inline] do_fault mm/memory.c:4647 [inline] handle_pte_fault mm/memory.c:4931 [inline] __handle_mm_fault+0x23ee/0x3c90 mm/memory.c:5073 handle_mm_fault+0x1b6/0x850 mm/memory.c:5219 do_user_addr_fault+0x475/0x1210 arch/x86/mm/fault.c:1428 handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 -> #0 (&mm->mmap_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+0x2a43/0x56d0 kernel/locking/lockdep.c:5055 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __might_fault mm/memory.c:5647 [inline] __might_fault+0x10c/0x180 mm/memory.c:5640 _copy_to_user+0x29/0x150 lib/usercopy.c:29 copy_to_user include/linux/uaccess.h:169 [inline] f2fs_ioc_get_encryption_pwsalt+0x2b2/0x370 fs/f2fs/file.c:2365 __f2fs_ioctl+0x29f1/0xaaf0 fs/f2fs/file.c:4169 f2fs_ioctl+0x18e/0x220 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] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: &mm->mmap_lock --> &nm_i->nat_tree_lock --> &sbi->sb_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->sb_lock); lock(&nm_i->nat_tree_lock); lock(&sbi->sb_lock); lock(&mm->mmap_lock); *** DEADLOCK *** 2 locks held by syz-executor.1/6777: #0: ffff88807b204460 (sb_writers#20){.+.+}-{0:0}, at: f2fs_ioc_get_encryption_pwsalt+0x136/0x370 fs/f2fs/file.c:2346 #1: ffff88808782c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] #1: ffff88808782c088 (&sbi->sb_lock){++++}-{3:3}, at: f2fs_ioc_get_encryption_pwsalt+0x174/0x370 fs/f2fs/file.c:2350 stack backtrace: CPU: 1 PID: 6777 Comm: syz-executor.1 Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 check_noncircular+0x25f/0x2e0 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+0x2a43/0x56d0 kernel/locking/lockdep.c:5055 lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __might_fault mm/memory.c:5647 [inline] __might_fault+0x10c/0x180 mm/memory.c:5640 _copy_to_user+0x29/0x150 lib/usercopy.c:29 copy_to_user include/linux/uaccess.h:169 [inline] f2fs_ioc_get_encryption_pwsalt+0x2b2/0x370 fs/f2fs/file.c:2365 __f2fs_ioctl+0x29f1/0xaaf0 fs/f2fs/file.c:4169 f2fs_ioctl+0x18e/0x220 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] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe11b48c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe11c1ba168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe11b5abf80 RCX: 00007fe11b48c0c9 RDX: 0000000020007fc0 RSI: 0000000040106614 RDI: 0000000000000005 RBP: 00007fe11b4e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc8fe0c2f R14: 00007fe11c1ba300 R15: 0000000000022000