F2FS-fs (loop3): Mounted with checkpoint version = 753bd00b ====================================================== WARNING: possible circular locking dependency detected 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Not tainted ------------------------------------------------------ syz-executor.3/10454 is trying to acquire lock: ffff000117cab590 (mapping.invalidate_lock#5){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] ffff000117cab590 (mapping.invalidate_lock#5){++++}-{3:3}, at: f2fs_vm_page_mkwrite+0x18c/0x97c fs/f2fs/file.c:104 but task is already holding lock: ffff00011611c558 (sb_pagefaults#2){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1918 [inline] ffff00011611c558 (sb_pagefaults#2){.+.+}-{0:0}, at: f2fs_vm_page_mkwrite+0x160/0x97c fs/f2fs/file.c:99 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (sb_pagefaults#2){.+.+}-{0:0}: percpu_down_read include/linux/percpu-rwsem.h:51 [inline] __sb_start_write+0x84/0x1f0 include/linux/fs.h:1814 sb_start_pagefault include/linux/fs.h:1918 [inline] f2fs_vm_page_mkwrite+0x160/0x97c fs/f2fs/file.c:99 do_page_mkwrite+0x74/0x288 mm/memory.c:2943 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 mm/memory.c:5073 [inline] handle_mm_fault+0xcdc/0x241c mm/memory.c:5219 __do_page_fault arch/arm64/mm/fault.c:512 [inline] do_page_fault+0x4b4/0x808 arch/arm64/mm/fault.c:612 do_translation_fault+0x78/0xac arch/arm64/mm/fault.c:695 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:831 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:586 __arch_copy_to_user+0x190/0x234 arch/arm64/lib/copy_template.S:158 copy_page_to_iter+0x198/0x35c lib/iov_iter.c:727 copy_folio_to_iter include/linux/uio.h:172 [inline] filemap_read+0x1014/0x1548 mm/filemap.c:2745 f2fs_file_read_iter+0xec/0x920 fs/f2fs/file.c:4374 call_read_iter include/linux/fs.h:2183 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x2b4/0x428 fs/read_write.c:470 ksys_read+0xb4/0x160 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __arm64_sys_read+0x24/0x34 fs/read_write.c:621 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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:591 -> #3 (&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+0x4df8/0x5104 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+0xd0/0x148 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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:591 -> #2 (&sbi->sb_lock){++++}-{3:3}: down_write+0x5c/0x88 kernel/locking/rwsem.c:1562 f2fs_down_write fs/f2fs/f2fs.h:2213 [inline] f2fs_handle_error+0x9c/0x178 fs/f2fs/super.c:3926 f2fs_new_node_page+0x3b0/0x580 fs/f2fs/node.c:1303 f2fs_get_dnode_of_data+0x2e8/0xb28 fs/f2fs/node.c:810 f2fs_reserve_block fs/f2fs/data.c:1199 [inline] f2fs_get_new_data_page+0x80/0x648 fs/f2fs/data.c:1387 f2fs_add_regular_entry+0x358/0x78c fs/f2fs/dir.c:754 f2fs_add_dentry fs/f2fs/dir.c:816 [inline] f2fs_do_add_link+0x1b0/0x358 fs/f2fs/dir.c:855 f2fs_add_link fs/f2fs/f2fs.h:3564 [inline] f2fs_create+0x120/0x228 fs/f2fs/namei.c:363 lookup_open fs/namei.c:3413 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x804/0x1330 fs/namei.c:3711 do_filp_open+0xd0/0x1a8 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+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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:591 -> #1 (&sbi->cp_rwsem){++++}-{3:3}: down_read+0x5c/0x78 kernel/locking/rwsem.c:1509 f2fs_down_read fs/f2fs/f2fs.h:2188 [inline] f2fs_lock_op fs/f2fs/f2fs.h:2231 [inline] f2fs_do_truncate_blocks+0x164/0xa30 fs/f2fs/file.c:688 f2fs_truncate_blocks+0x9c/0x1dc fs/f2fs/file.c:751 f2fs_truncate+0x2ec/0x4dc fs/f2fs/file.c:803 f2fs_setattr+0x5c4/0x784 fs/f2fs/file.c:1010 notify_change+0x730/0x7c8 fs/attr.c:482 do_truncate+0x10c/0x154 fs/open.c:65 handle_truncate fs/namei.c:3216 [inline] do_open fs/namei.c:3561 [inline] path_openat+0x1078/0x1330 fs/namei.c:3714 do_filp_open+0xd0/0x1a8 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+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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:591 -> #0 (mapping.invalidate_lock#5){++++}-{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+0x1670/0x2f48 kernel/locking/lockdep.c:5055 lock_acquire+0x164/0x334 kernel/locking/lockdep.c:5668 down_read+0x5c/0x78 kernel/locking/rwsem.c:1509 filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] f2fs_vm_page_mkwrite+0x18c/0x97c fs/f2fs/file.c:104 do_page_mkwrite+0x74/0x288 mm/memory.c:2943 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 mm/memory.c:5073 [inline] handle_mm_fault+0xcdc/0x241c mm/memory.c:5219 __do_page_fault arch/arm64/mm/fault.c:512 [inline] do_page_fault+0x4b4/0x808 arch/arm64/mm/fault.c:612 do_translation_fault+0x78/0xac arch/arm64/mm/fault.c:695 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:831 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:586 __arch_copy_to_user+0x190/0x234 arch/arm64/lib/copy_template.S:158 copy_page_to_iter+0x198/0x35c lib/iov_iter.c:727 copy_folio_to_iter include/linux/uio.h:172 [inline] filemap_read+0x1014/0x1548 mm/filemap.c:2745 f2fs_file_read_iter+0xec/0x920 fs/f2fs/file.c:4374 call_read_iter include/linux/fs.h:2183 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x2b4/0x428 fs/read_write.c:470 ksys_read+0xb4/0x160 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __arm64_sys_read+0x24/0x34 fs/read_write.c:621 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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:591 other info that might help us debug this: Chain exists of: mapping.invalidate_lock#5 --> &mm->mmap_lock --> sb_pagefaults#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sb_pagefaults#2); lock(&mm->mmap_lock); lock(sb_pagefaults#2); lock(mapping.invalidate_lock#5); *** DEADLOCK *** 3 locks held by syz-executor.3/10454: #0: ffff0000ca4dc2e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x12c/0x154 fs/file.c:1046 #1: ffff000116143e08 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #1: ffff000116143e08 (&mm->mmap_lock){++++}-{3:3}, at: do_page_fault+0x44c/0x808 arch/arm64/mm/fault.c:597 #2: ffff00011611c558 (sb_pagefaults#2){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1918 [inline] #2: ffff00011611c558 (sb_pagefaults#2){.+.+}-{0:0}, at: f2fs_vm_page_mkwrite+0x160/0x97c fs/f2fs/file.c:99 stack backtrace: CPU: 0 PID: 10454 Comm: syz-executor.3 Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 print_circular_bug+0x2c4/0x2c8 kernel/locking/lockdep.c:2055 check_noncircular+0x148/0x150 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+0x1670/0x2f48 kernel/locking/lockdep.c:5055 lock_acquire+0x164/0x334 kernel/locking/lockdep.c:5668 down_read+0x5c/0x78 kernel/locking/rwsem.c:1509 filemap_invalidate_lock_shared include/linux/fs.h:811 [inline] f2fs_vm_page_mkwrite+0x18c/0x97c fs/f2fs/file.c:104 do_page_mkwrite+0x74/0x288 mm/memory.c:2943 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 mm/memory.c:5073 [inline] handle_mm_fault+0xcdc/0x241c mm/memory.c:5219 __do_page_fault arch/arm64/mm/fault.c:512 [inline] do_page_fault+0x4b4/0x808 arch/arm64/mm/fault.c:612 do_translation_fault+0x78/0xac arch/arm64/mm/fault.c:695 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:831 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:586 __arch_copy_to_user+0x190/0x234 arch/arm64/lib/copy_template.S:158 copy_page_to_iter+0x198/0x35c lib/iov_iter.c:727 copy_folio_to_iter include/linux/uio.h:172 [inline] filemap_read+0x1014/0x1548 mm/filemap.c:2745 f2fs_file_read_iter+0xec/0x920 fs/f2fs/file.c:4374 call_read_iter include/linux/fs.h:2183 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x2b4/0x428 fs/read_write.c:470 ksys_read+0xb4/0x160 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __arm64_sys_read+0x24/0x34 fs/read_write.c:621 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c 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:591