loop0: detected capacity change from 0 to 4096 ====================================================== WARNING: possible circular locking dependency detected 6.13.0-syzkaller-07078-gb46c89c08f41 #0 Not tainted ------------------------------------------------------ syz.0.15/5962 is trying to acquire lock: ffff8880491d29f0 (mapping.invalidate_lock#5){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:920 [inline] ffff8880491d29f0 (mapping.invalidate_lock#5){.+.+}-{4:4}, at: filemap_fault+0x7f8/0x16c0 mm/filemap.c:3378 but task is already holding lock: ffff88807bd99f20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock_killable include/linux/mmap_lock.h:199 [inline] ffff88807bd99f20 (&mm->mmap_lock){++++}-{4:4}, at: __get_user_pages_locked mm/gup.c:1815 [inline] ffff88807bd99f20 (&mm->mmap_lock){++++}-{4:4}, at: __gup_longterm_locked+0x1151/0x17f0 mm/gup.c:2532 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&mm->mmap_lock){++++}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __might_fault+0xc6/0x120 mm/memory.c:6770 _inline_copy_to_user include/linux/uaccess.h:192 [inline] _copy_to_user+0x2c/0xb0 lib/usercopy.c:26 copy_to_user include/linux/uaccess.h:225 [inline] fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:145 ni_fiemap+0xfca/0x1220 fs/ntfs3/frecord.c:1948 ntfs_fiemap+0x132/0x180 fs/ntfs3/file.c:1360 ioctl_fiemap fs/ioctl.c:220 [inline] do_vfs_ioctl+0x1c01/0x2e40 fs/ioctl.c:840 __do_sys_ioctl fs/ioctl.c:904 [inline] __se_sys_ioctl+0x80/0x170 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&ni->ni_lock/5){+.+.}-{4:4}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __mutex_lock_common kernel/locking/mutex.c:585 [inline] __mutex_lock+0x19c/0x1010 kernel/locking/mutex.c:730 ni_lock fs/ntfs3/ntfs_fs.h:1110 [inline] attr_data_get_block+0x464/0x2fa0 fs/ntfs3/attrib.c:917 ntfs_get_block_vbo+0x3d7/0xd70 fs/ntfs3/inode.c:602 do_mpage_readpage+0x7b8/0x1720 fs/mpage.c:225 mpage_read_folio+0x108/0x1e0 fs/mpage.c:392 filemap_read_folio+0x148/0x3b0 mm/filemap.c:2358 filemap_fault+0xfaa/0x16c0 mm/filemap.c:3513 __do_fault+0x135/0x390 mm/memory.c:4908 do_read_fault mm/memory.c:5323 [inline] do_fault mm/memory.c:5457 [inline] do_pte_missing mm/memory.c:3980 [inline] handle_pte_fault+0x39eb/0x5ed0 mm/memory.c:5820 __handle_mm_fault mm/memory.c:5963 [inline] handle_mm_fault+0x1165/0x1c60 mm/memory.c:6131 faultin_page mm/gup.c:1196 [inline] __get_user_pages+0x1c82/0x49e0 mm/gup.c:1494 __get_user_pages_locked mm/gup.c:1760 [inline] __gup_longterm_locked+0xe64/0x17f0 mm/gup.c:2532 gup_fast_fallback+0x2266/0x29c0 mm/gup.c:3433 pin_user_pages_fast+0xcc/0x160 mm/gup.c:3539 iov_iter_extract_user_pages lib/iov_iter.c:1844 [inline] iov_iter_extract_pages+0x3bb/0x5c0 lib/iov_iter.c:1907 dio_refill_pages fs/direct-io.c:172 [inline] dio_get_page fs/direct-io.c:213 [inline] do_direct_IO fs/direct-io.c:915 [inline] __blockdev_direct_IO+0x1443/0x4890 fs/direct-io.c:1243 blockdev_direct_IO include/linux/fs.h:3387 [inline] ntfs_direct_IO+0x194/0x370 fs/ntfs3/inode.c:806 generic_file_direct_write+0x1e6/0x400 mm/filemap.c:4055 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4219 ntfs_file_write_iter+0x69c/0x7a0 fs/ntfs3/file.c:1267 do_iter_readv_writev+0x71a/0x9d0 vfs_writev+0x38b/0xbc0 fs/read_write.c:1050 do_pwritev fs/read_write.c:1146 [inline] __do_sys_pwritev2 fs/read_write.c:1204 [inline] __se_sys_pwritev2+0x196/0x2b0 fs/read_write.c:1195 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #0 (mapping.invalidate_lock#5){.+.+}-{4:4}: check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:920 [inline] filemap_fault+0x7f8/0x16c0 mm/filemap.c:3378 __do_fault+0x135/0x390 mm/memory.c:4908 do_read_fault mm/memory.c:5323 [inline] do_fault mm/memory.c:5457 [inline] do_pte_missing mm/memory.c:3980 [inline] handle_pte_fault+0x39eb/0x5ed0 mm/memory.c:5820 __handle_mm_fault mm/memory.c:5963 [inline] handle_mm_fault+0x1165/0x1c60 mm/memory.c:6131 faultin_page mm/gup.c:1196 [inline] __get_user_pages+0x1c82/0x49e0 mm/gup.c:1494 __get_user_pages_locked mm/gup.c:1760 [inline] __gup_longterm_locked+0x12cd/0x17f0 mm/gup.c:2532 gup_fast_fallback+0x2266/0x29c0 mm/gup.c:3433 pin_user_pages_fast+0xcc/0x160 mm/gup.c:3539 iov_iter_extract_user_pages lib/iov_iter.c:1844 [inline] iov_iter_extract_pages+0x3bb/0x5c0 lib/iov_iter.c:1907 dio_refill_pages fs/direct-io.c:172 [inline] dio_get_page fs/direct-io.c:213 [inline] do_direct_IO fs/direct-io.c:915 [inline] __blockdev_direct_IO+0x1443/0x4890 fs/direct-io.c:1243 blockdev_direct_IO include/linux/fs.h:3387 [inline] ntfs_direct_IO+0x194/0x370 fs/ntfs3/inode.c:806 generic_file_direct_write+0x1e6/0x400 mm/filemap.c:4055 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4219 ntfs_file_write_iter+0x69c/0x7a0 fs/ntfs3/file.c:1267 do_iter_readv_writev+0x71a/0x9d0 vfs_writev+0x38b/0xbc0 fs/read_write.c:1050 do_pwritev fs/read_write.c:1146 [inline] __do_sys_pwritev2 fs/read_write.c:1204 [inline] __se_sys_pwritev2+0x196/0x2b0 fs/read_write.c:1195 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 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#5 --> &ni->ni_lock/5 --> &mm->mmap_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(&mm->mmap_lock); lock(&ni->ni_lock/5); lock(&mm->mmap_lock); rlock(mapping.invalidate_lock#5); *** DEADLOCK *** 3 locks held by syz.0.15/5962: #0: ffff8880314e6420 (sb_writers#13){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3016 [inline] #0: ffff8880314e6420 (sb_writers#13){.+.+}-{0:0}, at: vfs_writev+0x2d6/0xbc0 fs/read_write.c:1048 #1: ffff8880491d2850 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: inode_trylock include/linux/fs.h:885 [inline] #1: ffff8880491d2850 (&sb->s_type->i_mutex_key#21){+.+.}-{4:4}, at: ntfs_file_write_iter+0x291/0x7a0 fs/ntfs3/file.c:1240 #2: ffff88807bd99f20 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock_killable include/linux/mmap_lock.h:199 [inline] #2: ffff88807bd99f20 (&mm->mmap_lock){++++}-{4:4}, at: __get_user_pages_locked mm/gup.c:1815 [inline] #2: ffff88807bd99f20 (&mm->mmap_lock){++++}-{4:4}, at: __gup_longterm_locked+0x1151/0x17f0 mm/gup.c:2532 stack backtrace: CPU: 0 UID: 0 PID: 5962 Comm: syz.0.15 Not tainted 6.13.0-syzkaller-07078-gb46c89c08f41 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2076 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2208 check_prev_add kernel/locking/lockdep.c:3163 [inline] check_prevs_add kernel/locking/lockdep.c:3282 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3906 __lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5228 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 down_read+0xb1/0xa40 kernel/locking/rwsem.c:1524 filemap_invalidate_lock_shared include/linux/fs.h:920 [inline] filemap_fault+0x7f8/0x16c0 mm/filemap.c:3378 __do_fault+0x135/0x390 mm/memory.c:4908 do_read_fault mm/memory.c:5323 [inline] do_fault mm/memory.c:5457 [inline] do_pte_missing mm/memory.c:3980 [inline] handle_pte_fault+0x39eb/0x5ed0 mm/memory.c:5820 __handle_mm_fault mm/memory.c:5963 [inline] handle_mm_fault+0x1165/0x1c60 mm/memory.c:6131 faultin_page mm/gup.c:1196 [inline] __get_user_pages+0x1c82/0x49e0 mm/gup.c:1494 __get_user_pages_locked mm/gup.c:1760 [inline] __gup_longterm_locked+0x12cd/0x17f0 mm/gup.c:2532 gup_fast_fallback+0x2266/0x29c0 mm/gup.c:3433 pin_user_pages_fast+0xcc/0x160 mm/gup.c:3539 iov_iter_extract_user_pages lib/iov_iter.c:1844 [inline] iov_iter_extract_pages+0x3bb/0x5c0 lib/iov_iter.c:1907 dio_refill_pages fs/direct-io.c:172 [inline] dio_get_page fs/direct-io.c:213 [inline] do_direct_IO fs/direct-io.c:915 [inline] __blockdev_direct_IO+0x1443/0x4890 fs/direct-io.c:1243 blockdev_direct_IO include/linux/fs.h:3387 [inline] ntfs_direct_IO+0x194/0x370 fs/ntfs3/inode.c:806 generic_file_direct_write+0x1e6/0x400 mm/filemap.c:4055 __generic_file_write_iter+0x126/0x230 mm/filemap.c:4219 ntfs_file_write_iter+0x69c/0x7a0 fs/ntfs3/file.c:1267 do_iter_readv_writev+0x71a/0x9d0 vfs_writev+0x38b/0xbc0 fs/read_write.c:1050 do_pwritev fs/read_write.c:1146 [inline] __do_sys_pwritev2 fs/read_write.c:1204 [inline] __se_sys_pwritev2+0x196/0x2b0 fs/read_write.c:1195 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe04818cd29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe045ff6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007fe0483a5fa0 RCX: 00007fe04818cd29 RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000006 RBP: 00007fe04820e2a0 R08: 0000000000000000 R09: 0000000000000003 R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe0483a5fa0 R15: 00007ffe71e05b98