====================================================== WARNING: possible circular locking dependency detected 6.9.0-rc6-syzkaller-00113-g49a73b1652c5 #0 Not tainted ------------------------------------------------------ syz-executor.3/19249 is trying to acquire lock: ffff88805b541b60 (mapping.invalidate_lock#9){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] ffff88805b541b60 (mapping.invalidate_lock#9){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x133/0x5a0 mm/readahead.c:225 but task is already holding lock: ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:146 [inline] ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: xdp_umem_pin_pages net/xdp/xdp_umem.c:104 [inline] ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: xdp_umem_reg net/xdp/xdp_umem.c:227 [inline] ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: xdp_umem_create+0x6af/0x1250 net/xdp/xdp_umem.c:260 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&mm->mmap_lock){++++}-{3:3}: __might_fault mm/memory.c:6220 [inline] __might_fault+0x11b/0x190 mm/memory.c:6213 _copy_to_user+0x2b/0xc0 lib/usercopy.c:36 copy_to_user include/linux/uaccess.h:191 [inline] fiemap_fill_next_extent+0x232/0x390 fs/ioctl.c:145 ni_fiemap+0x9eb/0xc10 fs/ntfs3/frecord.c:2044 ntfs_fiemap+0xc9/0x120 fs/ntfs3/file.c:1206 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x404/0x1ad0 fs/ioctl.c:838 __do_sys_ioctl fs/ioctl.c:902 [inline] __se_sys_ioctl fs/ioctl.c:890 [inline] __x64_sys_ioctl+0x116/0x220 fs/ioctl.c:890 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ni->file.run_lock#3){++++}-{3:3}: down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 attr_data_get_block+0x18b/0x1b70 fs/ntfs3/attrib.c:902 ntfs_get_block_vbo+0x288/0xec0 fs/ntfs3/inode.c:593 do_mpage_readpage+0x660/0x17c0 fs/mpage.c:232 mpage_read_folio+0xa9/0x140 fs/mpage.c:399 ntfs_read_folio+0x157/0x1f0 fs/ntfs3/inode.c:731 filemap_read_folio+0xe5/0x2c0 mm/filemap.c:2331 filemap_fault+0x1891/0x38c0 mm/filemap.c:3381 __do_fault+0x10a/0x490 mm/memory.c:4531 do_cow_fault mm/memory.c:4924 [inline] do_fault mm/memory.c:5026 [inline] do_pte_missing mm/memory.c:3880 [inline] handle_pte_fault mm/memory.c:5300 [inline] __handle_mm_fault+0x10b3/0x4a80 mm/memory.c:5441 handle_mm_fault+0x476/0xa00 mm/memory.c:5606 do_user_addr_fault+0x2e5/0x1080 arch/x86/mm/fault.c:1413 handle_page_fault arch/x86/mm/fault.c:1505 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 -> #0 (mapping.invalidate_lock#9){.+.+}-{3:3}: check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] page_cache_ra_unbounded+0x133/0x5a0 mm/readahead.c:225 do_page_cache_ra mm/readahead.c:299 [inline] page_cache_ra_order+0x64b/0x9a0 mm/readahead.c:539 do_sync_mmap_readahead mm/filemap.c:3151 [inline] filemap_fault+0x1739/0x38c0 mm/filemap.c:3289 __do_fault+0x10a/0x490 mm/memory.c:4531 do_cow_fault mm/memory.c:4924 [inline] do_fault mm/memory.c:5026 [inline] do_pte_missing mm/memory.c:3880 [inline] handle_pte_fault mm/memory.c:5300 [inline] __handle_mm_fault+0x10b3/0x4a80 mm/memory.c:5441 handle_mm_fault+0x476/0xa00 mm/memory.c:5606 faultin_page mm/gup.c:958 [inline] __get_user_pages+0x4cc/0x1510 mm/gup.c:1257 __get_user_pages_locked mm/gup.c:1525 [inline] __gup_longterm_locked+0x6a9/0x28f0 mm/gup.c:2228 pin_user_pages+0x13f/0x160 mm/gup.c:3401 xdp_umem_pin_pages net/xdp/xdp_umem.c:105 [inline] xdp_umem_reg net/xdp/xdp_umem.c:227 [inline] xdp_umem_create+0x723/0x1250 net/xdp/xdp_umem.c:260 xsk_setsockopt+0x7fc/0xa10 net/xdp/xsk.c:1402 do_sock_setsockopt+0x222/0x480 net/socket.c:2311 __sys_setsockopt+0x1a4/0x270 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xbd/0x160 net/socket.c:2340 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: mapping.invalidate_lock#9 --> &ni->file.run_lock#3 --> &mm->mmap_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(&mm->mmap_lock); lock(&ni->file.run_lock#3); lock(&mm->mmap_lock); rlock(mapping.invalidate_lock#9); *** DEADLOCK *** 2 locks held by syz-executor.3/19249: #0: ffff88805660f670 (&xs->mutex){+.+.}-{3:3}, at: xsk_setsockopt+0x46b/0xa10 net/xdp/xsk.c:1396 #1: ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:146 [inline] #1: ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: xdp_umem_pin_pages net/xdp/xdp_umem.c:104 [inline] #1: ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: xdp_umem_reg net/xdp/xdp_umem.c:227 [inline] #1: ffff88807c0e8b20 (&mm->mmap_lock){++++}-{3:3}, at: xdp_umem_create+0x6af/0x1250 net/xdp/xdp_umem.c:260 stack backtrace: CPU: 1 PID: 19249 Comm: syz-executor.3 Not tainted 6.9.0-rc6-syzkaller-00113-g49a73b1652c5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2187 check_prev_add kernel/locking/lockdep.c:3134 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 down_read+0x9a/0x330 kernel/locking/rwsem.c:1526 filemap_invalidate_lock_shared include/linux/fs.h:850 [inline] page_cache_ra_unbounded+0x133/0x5a0 mm/readahead.c:225 do_page_cache_ra mm/readahead.c:299 [inline] page_cache_ra_order+0x64b/0x9a0 mm/readahead.c:539 do_sync_mmap_readahead mm/filemap.c:3151 [inline] filemap_fault+0x1739/0x38c0 mm/filemap.c:3289 __do_fault+0x10a/0x490 mm/memory.c:4531 do_cow_fault mm/memory.c:4924 [inline] do_fault mm/memory.c:5026 [inline] do_pte_missing mm/memory.c:3880 [inline] handle_pte_fault mm/memory.c:5300 [inline] __handle_mm_fault+0x10b3/0x4a80 mm/memory.c:5441 handle_mm_fault+0x476/0xa00 mm/memory.c:5606 faultin_page mm/gup.c:958 [inline] __get_user_pages+0x4cc/0x1510 mm/gup.c:1257 __get_user_pages_locked mm/gup.c:1525 [inline] __gup_longterm_locked+0x6a9/0x28f0 mm/gup.c:2228 pin_user_pages+0x13f/0x160 mm/gup.c:3401 xdp_umem_pin_pages net/xdp/xdp_umem.c:105 [inline] xdp_umem_reg net/xdp/xdp_umem.c:227 [inline] xdp_umem_create+0x723/0x1250 net/xdp/xdp_umem.c:260 xsk_setsockopt+0x7fc/0xa10 net/xdp/xsk.c:1402 do_sock_setsockopt+0x222/0x480 net/socket.c:2311 __sys_setsockopt+0x1a4/0x270 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xbd/0x160 net/socket.c:2340 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0abe67dd29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0abf37d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f0abe7abf80 RCX: 00007f0abe67dd29 RDX: 0000000000000004 RSI: 000000000000011b RDI: 0000000000000005 RBP: 00007f0abe6ca47e R08: 0000000000000020 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0abe7abf80 R15: 00007ffe4392c808