======================================================
WARNING: possible circular locking dependency detected
5.15.175-syzkaller #0 Not tainted
------------------------------------------------------
syz.7.306/6355 is trying to acquire lock:
ffff8880791d8f28 (&mm->mmap_lock){++++}-{3:3}, at: get_current arch/x86/include/asm/current.h:15 [inline]
ffff8880791d8f28 (&mm->mmap_lock){++++}-{3:3}, at: internal_get_user_pages_fast+0x1c7/0x2810 mm/gup.c:2895
but task is already holding lock:
ffff8880580f7240 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
ffff8880580f7240 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: do_blockdev_direct_IO fs/direct-io.c:1169 [inline]
ffff8880580f7240 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: __blockdev_direct_IO+0x3db/0x4f40 fs/direct-io.c:1368
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}:
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
down_write+0x38/0x60 kernel/locking/rwsem.c:1551
inode_lock include/linux/fs.h:789 [inline]
ntfs_file_mmap+0x589/0x7e0 fs/ntfs3/file.c:401
call_mmap include/linux/fs.h:2179 [inline]
mmap_file+0x5a/0xb0 mm/util.c:1092
__mmap_region mm/mmap.c:1784 [inline]
mmap_region+0x1035/0x1870 mm/mmap.c:2921
do_mmap+0x78d/0xe00 mm/mmap.c:1574
vm_mmap_pgoff+0x1ca/0x2d0 mm/util.c:551
ksys_mmap_pgoff+0x559/0x780 mm/mmap.c:1623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #0 (&mm->mmap_lock){++++}-{3:3}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
internal_get_user_pages_fast+0x212/0x2810 mm/gup.c:2895
iov_iter_get_pages+0x25a/0x570 lib/iov_iter.c:1544
dio_refill_pages fs/direct-io.c:173 [inline]
dio_get_page fs/direct-io.c:217 [inline]
do_direct_IO fs/direct-io.c:938 [inline]
do_blockdev_direct_IO fs/direct-io.c:1276 [inline]
__blockdev_direct_IO+0x1419/0x4f40 fs/direct-io.c:1368
blockdev_direct_IO include/linux/fs.h:3346 [inline]
ntfs_direct_IO+0x193/0x360 fs/ntfs3/inode.c:798
generic_file_read_iter+0x28d/0x460 mm/filemap.c:2772
call_read_iter include/linux/fs.h:2168 [inline]
new_sync_read fs/read_write.c:404 [inline]
vfs_read+0xa93/0xe10 fs/read_write.c:485
ksys_read+0x1a2/0x2c0 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&sb->s_type->i_mutex_key#22);
lock(&mm->mmap_lock);
lock(&sb->s_type->i_mutex_key#22);
lock(&mm->mmap_lock);
*** DEADLOCK ***
2 locks held by syz.7.306/6355:
#0: ffff888024782af0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2cb/0x380 fs/file.c:1057
#1: ffff8880580f7240 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
#1: ffff8880580f7240 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: do_blockdev_direct_IO fs/direct-io.c:1169 [inline]
#1: ffff8880580f7240 (&sb->s_type->i_mutex_key#22){+.+.}-{3:3}, at: __blockdev_direct_IO+0x3db/0x4f40 fs/direct-io.c:1368
stack backtrace:
CPU: 1 PID: 6355 Comm: syz.7.306 Not tainted 5.15.175-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
__lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
internal_get_user_pages_fast+0x212/0x2810 mm/gup.c:2895
iov_iter_get_pages+0x25a/0x570 lib/iov_iter.c:1544
dio_refill_pages fs/direct-io.c:173 [inline]
dio_get_page fs/direct-io.c:217 [inline]
do_direct_IO fs/direct-io.c:938 [inline]
do_blockdev_direct_IO fs/direct-io.c:1276 [inline]
__blockdev_direct_IO+0x1419/0x4f40 fs/direct-io.c:1368
blockdev_direct_IO include/linux/fs.h:3346 [inline]
ntfs_direct_IO+0x193/0x360 fs/ntfs3/inode.c:798
generic_file_read_iter+0x28d/0x460 mm/filemap.c:2772
call_read_iter include/linux/fs.h:2168 [inline]
new_sync_read fs/read_write.c:404 [inline]
vfs_read+0xa93/0xe10 fs/read_write.c:485
ksys_read+0x1a2/0x2c0 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7feb19c2bd29
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:00007feb17a9c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007feb19e1bfa0 RCX: 00007feb19c2bd29
RDX: 0000000000002000 RSI: 0000000020000000 RDI: 000000000000000e
RBP: 00007feb19ca7b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007feb19e1bfa0 R15: 00007ffeb62ea278
</TASK>