====================================================== WARNING: possible circular locking dependency detected 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Not tainted ------------------------------------------------------ syz.1.310/7852 is trying to acquire lock: ffff0000f48e60e0 (mapping.invalidate_lock#5){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:870 [inline] ffff0000f48e60e0 (mapping.invalidate_lock#5){.+.+}-{3:3}, at: filemap_fault+0x5c0/0x138c mm/filemap.c:3331 but task is already holding lock: ffff0000da1fe188 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline] ffff0000da1fe188 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1806 [inline] ffff0000da1fe188 (&mm->mmap_lock){++++}-{3:3}, at: faultin_page_range+0x33c/0x778 mm/gup.c:1975 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault+0xc4/0x124 mm/memory.c:6716 _inline_copy_to_user include/linux/uaccess.h:192 [inline] copy_to_user include/linux/uaccess.h:223 [inline] fiemap_fill_next_extent+0x1b4/0x424 fs/ioctl.c:145 ocfs2_fiemap_inline fs/ocfs2/extent_map.c:725 [inline] ocfs2_fiemap+0x994/0xc78 fs/ocfs2/extent_map.c:762 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1de8/0x2aa8 fs/ioctl.c:841 __do_sys_ioctl fs/ioctl.c:905 [inline] __se_sys_ioctl fs/ioctl.c:893 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:893 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #1 (&ocfs2_file_ip_alloc_sem_key){++++}-{3:3}: down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 ocfs2_read_folio+0x328/0xc6c fs/ocfs2/aops.c:302 filemap_read_folio+0x108/0x318 mm/filemap.c:2367 filemap_fault+0xe28/0x138c mm/filemap.c:3435 ocfs2_fault+0xbc/0x49c fs/ocfs2/mmap.c:38 __do_fault+0x11c/0x374 mm/memory.c:4882 do_shared_fault mm/memory.c:5361 [inline] do_fault mm/memory.c:5435 [inline] do_pte_missing mm/memory.c:3965 [inline] handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault+0x1d50/0x66e8 mm/memory.c:5909 handle_mm_fault+0x29c/0x8b4 mm/memory.c:6077 faultin_page mm/gup.c:1187 [inline] __get_user_pages+0x15e4/0x3134 mm/gup.c:1485 __get_user_pages_locked mm/gup.c:1751 [inline] faultin_page_range+0x200/0x778 mm/gup.c:1975 madvise_populate mm/madvise.c:943 [inline] do_madvise+0x800/0x31dc mm/madvise.c:1458 __do_sys_madvise mm/madvise.c:1477 [inline] __se_sys_madvise mm/madvise.c:1475 [inline] __arm64_sys_madvise+0xa4/0xc0 mm/madvise.c:1475 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 -> #0 (mapping.invalidate_lock#5){.+.+}-{3:3}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x33f8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:870 [inline] filemap_fault+0x5c0/0x138c mm/filemap.c:3331 ocfs2_fault+0xbc/0x49c fs/ocfs2/mmap.c:38 __do_fault+0x11c/0x374 mm/memory.c:4882 do_shared_fault mm/memory.c:5361 [inline] do_fault mm/memory.c:5435 [inline] do_pte_missing mm/memory.c:3965 [inline] handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault+0x1d50/0x66e8 mm/memory.c:5909 handle_mm_fault+0x29c/0x8b4 mm/memory.c:6077 faultin_page mm/gup.c:1187 [inline] __get_user_pages+0x15e4/0x3134 mm/gup.c:1485 __get_user_pages_locked mm/gup.c:1815 [inline] faultin_page_range+0x384/0x778 mm/gup.c:1975 madvise_populate mm/madvise.c:943 [inline] do_madvise+0x800/0x31dc mm/madvise.c:1458 __do_sys_madvise mm/madvise.c:1477 [inline] __se_sys_madvise mm/madvise.c:1475 [inline] __arm64_sys_madvise+0xa4/0xc0 mm/madvise.c:1475 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 other info that might help us debug this: Chain exists of: mapping.invalidate_lock#5 --> &ocfs2_file_ip_alloc_sem_key --> &mm->mmap_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(&mm->mmap_lock); lock(&ocfs2_file_ip_alloc_sem_key); lock(&mm->mmap_lock); rlock(mapping.invalidate_lock#5); *** DEADLOCK *** 1 lock held by syz.1.310/7852: #0: ffff0000da1fe188 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:153 [inline] #0: ffff0000da1fe188 (&mm->mmap_lock){++++}-{3:3}, at: __get_user_pages_locked mm/gup.c:1806 [inline] #0: ffff0000da1fe188 (&mm->mmap_lock){++++}-{3:3}, at: faultin_page_range+0x33c/0x778 mm/gup.c:1975 stack backtrace: CPU: 1 UID: 0 PID: 7852 Comm: syz.1.310 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x154/0x1c0 kernel/locking/lockdep.c:2074 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x33f8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:870 [inline] filemap_fault+0x5c0/0x138c mm/filemap.c:3331 ocfs2_fault+0xbc/0x49c fs/ocfs2/mmap.c:38 __do_fault+0x11c/0x374 mm/memory.c:4882 do_shared_fault mm/memory.c:5361 [inline] do_fault mm/memory.c:5435 [inline] do_pte_missing mm/memory.c:3965 [inline] handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault+0x1d50/0x66e8 mm/memory.c:5909 handle_mm_fault+0x29c/0x8b4 mm/memory.c:6077 faultin_page mm/gup.c:1187 [inline] __get_user_pages+0x15e4/0x3134 mm/gup.c:1485 __get_user_pages_locked mm/gup.c:1815 [inline] faultin_page_range+0x384/0x778 mm/gup.c:1975 madvise_populate mm/madvise.c:943 [inline] do_madvise+0x800/0x31dc mm/madvise.c:1458 __do_sys_madvise mm/madvise.c:1477 [inline] __se_sys_madvise mm/madvise.c:1475 [inline] __arm64_sys_madvise+0xa4/0xc0 mm/madvise.c:1475 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600