======================================================
WARNING: possible circular locking dependency detected
6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0 Not tainted
------------------------------------------------------
syz-executor.2/31010 is trying to acquire lock:
ffff88814ab8a650 (sb_internal){.+.+}-{0:0}, at: evict+0x2ed/0x6b0 fs/inode.c:664
but task is already holding lock:
ffff88814ab8cb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ext_migrate+0x22c/0x1c10 fs/ext4/migrate.c:436
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&sbi->s_writepages_rwsem){++++}-{0:0}:
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
ext4_writepages+0x1c4/0x3da0 fs/ext4/inode.c:2694
do_writepages+0x1ab/0x690 mm/page-writeback.c:2469
filemap_fdatawrite_wbc mm/filemap.c:388 [inline]
filemap_fdatawrite_wbc+0x143/0x1b0 mm/filemap.c:378
__filemap_fdatawrite_range+0xb4/0xf0 mm/filemap.c:421
filemap_write_and_wait_range+0x85/0x100 mm/filemap.c:674
__iomap_dio_rw+0x5ed/0x1cb0 fs/iomap/direct-io.c:573
iomap_dio_rw+0x3c/0xa0 fs/iomap/direct-io.c:690
ext4_dio_read_iter fs/ext4/file.c:94 [inline]
ext4_file_read_iter+0x4ba/0x690 fs/ext4/file.c:145
call_read_iter include/linux/fs.h:2185 [inline]
generic_file_splice_read+0x17e/0x4b0 fs/splice.c:309
do_splice_to+0x1b9/0x240 fs/splice.c:793
splice_direct_to_actor+0x2a7/0x8a0 fs/splice.c:865
do_splice_direct+0x1a7/0x270 fs/splice.c:974
do_sendfile+0xb19/0x1270 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #2 (&sb->s_type->i_mutex_key#8){++++}-{3:3}:
down_read+0x98/0x450 kernel/locking/rwsem.c:1509
inode_lock_shared include/linux/fs.h:766 [inline]
ext4_bmap+0x4e/0x460 fs/ext4/inode.c:3164
bmap+0xaa/0x120 fs/inode.c:1798
jbd2_journal_bmap+0xa8/0x180 fs/jbd2/journal.c:977
__jbd2_journal_erase fs/jbd2/journal.c:1789 [inline]
jbd2_journal_flush+0x84f/0xc00 fs/jbd2/journal.c:2492
ext4_ioctl_checkpoint fs/ext4/ioctl.c:1082 [inline]
__ext4_ioctl+0x290a/0x4b70 fs/ext4/ioctl.c:1587
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #1 (&journal->j_checkpoint_mutex){+.+.}-{3:3}:
__mutex_lock_common kernel/locking/mutex.c:603 [inline]
mutex_lock_io_nested+0x13f/0x1190 kernel/locking/mutex.c:833
__jbd2_log_wait_for_space+0x234/0x460 fs/jbd2/checkpoint.c:110
add_transaction_credits+0xa2d/0xb70 fs/jbd2/transaction.c:298
start_this_handle+0x3ae/0x14a0 fs/jbd2/transaction.c:422
jbd2__journal_start+0x399/0x9b0 fs/jbd2/transaction.c:520
__ext4_journal_start_sb+0x41d/0x530 fs/ext4/ext4_jbd2.c:105
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_evict_inode+0x9fa/0x1e30 fs/ext4/inode.c:251
evict+0x2ed/0x6b0 fs/inode.c:664
iput_final fs/inode.c:1747 [inline]
iput.part.0+0x59b/0x880 fs/inode.c:1773
iput+0x58/0x70 fs/inode.c:1763
d_delete_notify include/linux/fsnotify.h:261 [inline]
vfs_rmdir.part.0+0x496/0x5a0 fs/namei.c:4133
vfs_rmdir fs/namei.c:4105 [inline]
do_rmdir+0x3a6/0x430 fs/namei.c:4181
__do_sys_unlinkat fs/namei.c:4361 [inline]
__se_sys_unlinkat fs/namei.c:4355 [inline]
__x64_sys_unlinkat+0xeb/0x130 fs/namei.c:4355
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 (sb_internal){.+.+}-{0:0}:
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+0x2a43/0x56d0 kernel/locking/lockdep.c:5055
lock_acquire kernel/locking/lockdep.c:5668 [inline]
lock_acquire+0x1df/0x630 kernel/locking/lockdep.c:5633
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
__sb_start_write include/linux/fs.h:1826 [inline]
sb_start_intwrite include/linux/fs.h:1948 [inline]
ext4_evict_inode+0x12bd/0x1e30 fs/ext4/inode.c:240
evict+0x2ed/0x6b0 fs/inode.c:664
iput_final fs/inode.c:1747 [inline]
iput.part.0+0x59b/0x880 fs/inode.c:1773
iput+0x58/0x70 fs/inode.c:1763
ext4_ext_migrate+0xb9d/0x1c10 fs/ext4/migrate.c:586
__ext4_ioctl+0x12a4/0x4b70 fs/ext4/ioctl.c:1389
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info that might help us debug this:
Chain exists of:
sb_internal --> &sb->s_type->i_mutex_key#8 --> &sbi->s_writepages_rwsem
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&sbi->s_writepages_rwsem);
lock(&sb->s_type->i_mutex_key#8);
lock(&sbi->s_writepages_rwsem);
lock(sb_internal);
*** DEADLOCK ***
3 locks held by syz-executor.2/31010:
#0: ffff88814ab8a460 (sb_writers#4){.+.+}-{0:0}, at: __ext4_ioctl+0x1273/0x4b70 fs/ext4/ioctl.c:1379
#1: ffff88807382de48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88807382de48 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: __ext4_ioctl+0x129c/0x4b70 fs/ext4/ioctl.c:1388
#2: ffff88814ab8cb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ext_migrate+0x22c/0x1c10 fs/ext4/migrate.c:436
stack backtrace:
CPU: 0 PID: 31010 Comm: syz-executor.2 Not tainted 6.1.0-rc3-syzkaller-00706-gfbeb229a6622 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
check_noncircular+0x25f/0x2e0 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+0x2a43/0x56d0 kernel/locking/lockdep.c:5055
lock_acquire kernel/locking/lockdep.c:5668 [inline]
lock_acquire+0x1df/0x630 kernel/locking/lockdep.c:5633
percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
__sb_start_write include/linux/fs.h:1826 [inline]
sb_start_intwrite include/linux/fs.h:1948 [inline]
ext4_evict_inode+0x12bd/0x1e30 fs/ext4/inode.c:240
evict+0x2ed/0x6b0 fs/inode.c:664
iput_final fs/inode.c:1747 [inline]
iput.part.0+0x59b/0x880 fs/inode.c:1773
iput+0x58/0x70 fs/inode.c:1763
ext4_ext_migrate+0xb9d/0x1c10 fs/ext4/migrate.c:586
__ext4_ioctl+0x12a4/0x4b70 fs/ext4/ioctl.c:1389
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8ff488b639
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ff5612168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8ff49abf80 RCX: 00007f8ff488b639
RDX: 0000000000000000 RSI: 0000000000006609 RDI: 0000000000000005
RBP: 00007f8ff48e67e1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd1ec8e85f R14: 00007f8ff5612300 R15: 0000000000022000
</TASK>