======================================================
WARNING: possible circular locking dependency detected
6.0.0-rc6-syzkaller-00210-gbf682942cd26 #0 Not tainted
------------------------------------------------------
syz-executor.2/8524 is trying to acquire lock:
ffff888149c5c650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1826 [inline]
ffff888149c5c650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1948 [inline]
ffff888149c5c650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x4b7/0x1010 fs/ext4/inode.c:240
but task is already holding lock:
ffff888149c5ebd8 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ext_migrate+0x212/0x1220 fs/ext4/migrate.c:437
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&sbi->s_writepages_rwsem){++++}-{0:0}:
lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5666
percpu_down_read+0x44/0x190 include/linux/percpu-rwsem.h:51
ext4_writepages+0x1b5/0x3be0 fs/ext4/inode.c:2687
do_writepages+0x3c3/0x680 mm/page-writeback.c:2468
filemap_fdatawrite_wbc+0x11e/0x170 mm/filemap.c:388
__filemap_fdatawrite_range mm/filemap.c:421 [inline]
filemap_write_and_wait_range+0x1b3/0x2b0 mm/filemap.c:673
__iomap_dio_rw+0xafd/0x20d0 fs/iomap/direct-io.c:573
iomap_dio_rw+0x42/0xa0 fs/iomap/direct-io.c:690
ext4_dio_read_iter fs/ext4/file.c:79 [inline]
ext4_file_read_iter+0x595/0x740 fs/ext4/file.c:130
call_read_iter include/linux/fs.h:2181 [inline]
generic_file_splice_read+0x1ff/0x5d0 fs/splice.c:309
do_splice_to fs/splice.c:793 [inline]
splice_direct_to_actor+0x41b/0xc00 fs/splice.c:865
do_splice_direct+0x279/0x3d0 fs/splice.c:974
do_sendfile+0x5fb/0xf80 fs/read_write.c:1249
__do_sys_sendfile64 fs/read_write.c:1317 [inline]
__se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1303
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #2 (&sb->s_type->i_mutex_key#8){++++}-{3:3}:
lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5666
down_read+0x39/0x50 kernel/locking/rwsem.c:1499
inode_lock_shared include/linux/fs.h:766 [inline]
ext4_bmap+0x55/0x410 fs/ext4/inode.c:3157
bmap+0xa1/0xd0 fs/inode.c:1799
jbd2_journal_bmap fs/jbd2/journal.c:971 [inline]
__jbd2_journal_erase fs/jbd2/journal.c:1784 [inline]
jbd2_journal_flush+0x5d0/0xca0 fs/jbd2/journal.c:2490
ext4_ioctl_checkpoint fs/ext4/ioctl.c:1082 [inline]
__ext4_ioctl fs/ext4/ioctl.c:1586 [inline]
ext4_ioctl+0x31ad/0x5410 fs/ext4/ioctl.c:1606
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #1 (&journal->j_checkpoint_mutex){+.+.}-{3:3}:
lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5666
__mutex_lock_common+0x1bd/0x26e0 kernel/locking/mutex.c:603
mutex_lock_io_nested+0x43/0x60 kernel/locking/mutex.c:833
__jbd2_log_wait_for_space+0x21d/0x6f0 fs/jbd2/checkpoint.c:110
add_transaction_credits+0x916/0xbd0 fs/jbd2/transaction.c:298
start_this_handle+0x744/0x1670 fs/jbd2/transaction.c:422
jbd2__journal_start+0x2ca/0x5b0 fs/jbd2/transaction.c:520
__ext4_journal_start_sb+0x111/0x1d0 fs/ext4/ext4_jbd2.c:105
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_evict_inode+0x8e7/0x1010 fs/ext4/inode.c:251
evict+0x2a4/0x620 fs/inode.c:665
d_delete_notify include/linux/fsnotify.h:261 [inline]
vfs_rmdir+0x37e/0x4b0 fs/namei.c:4111
do_rmdir+0x39d/0x610 fs/namei.c:4159
__do_sys_unlinkat fs/namei.c:4339 [inline]
__se_sys_unlinkat fs/namei.c:4333 [inline]
__x64_sys_unlinkat+0xdc/0xf0 fs/namei.c:4333
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/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:3095 [inline]
check_prevs_add kernel/locking/lockdep.c:3214 [inline]
validate_chain+0x1873/0x6c00 kernel/locking/lockdep.c:3829
__lock_acquire+0x1292/0x1f60 kernel/locking/lockdep.c:5053
lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5666
percpu_down_read+0x44/0x190 include/linux/percpu-rwsem.h:51
__sb_start_write include/linux/fs.h:1826 [inline]
sb_start_intwrite include/linux/fs.h:1948 [inline]
ext4_evict_inode+0x4b7/0x1010 fs/ext4/inode.c:240
evict+0x2a4/0x620 fs/inode.c:665
ext4_ext_migrate+0xf3a/0x1220 fs/ext4/migrate.c:587
ext4_ioctl_setflags fs/ext4/ioctl.c:692 [inline]
ext4_fileattr_set+0xeb7/0x17d0 fs/ext4/ioctl.c:1001
vfs_fileattr_set+0x8be/0xd20 fs/ioctl.c:696
ioctl_setflags fs/ioctl.c:728 [inline]
do_vfs_ioctl+0x1d26/0x29a0 fs/ioctl.c:839
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x83/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/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.2/8524:
#0: ffff888149c5c460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 fs/namespace.c:437
#1: ffff8880747a7258 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880747a7258 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_fileattr_set+0x135/0xd20 fs/ioctl.c:681
#2: ffff888149c5ebd8 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ext_migrate+0x212/0x1220 fs/ext4/migrate.c:437
stack backtrace:
CPU: 1 PID: 8524 Comm: syz-executor.2 Not tainted 6.0.0-rc6-syzkaller-00210-gbf682942cd26 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
check_noncircular+0x2cc/0x390 kernel/locking/lockdep.c:2175
check_prev_add kernel/locking/lockdep.c:3095 [inline]
check_prevs_add kernel/locking/lockdep.c:3214 [inline]
validate_chain+0x1873/0x6c00 kernel/locking/lockdep.c:3829
__lock_acquire+0x1292/0x1f60 kernel/locking/lockdep.c:5053
lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5666
percpu_down_read+0x44/0x190 include/linux/percpu-rwsem.h:51
__sb_start_write include/linux/fs.h:1826 [inline]
sb_start_intwrite include/linux/fs.h:1948 [inline]
ext4_evict_inode+0x4b7/0x1010 fs/ext4/inode.c:240
evict+0x2a4/0x620 fs/inode.c:665
ext4_ext_migrate+0xf3a/0x1220 fs/ext4/migrate.c:587
ext4_ioctl_setflags fs/ext4/ioctl.c:692 [inline]
ext4_fileattr_set+0xeb7/0x17d0 fs/ext4/ioctl.c:1001
vfs_fileattr_set+0x8be/0xd20 fs/ioctl.c:696
ioctl_setflags fs/ioctl.c:728 [inline]
do_vfs_ioctl+0x1d26/0x29a0 fs/ioctl.c:839
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x83/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8e7048a669
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:00007f8e716d7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8e705abf80 RCX: 00007f8e7048a669
RDX: 0000000020000040 RSI: 0000000040086602 RDI: 0000000000000003
RBP: 00007f8e704e5560 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd0403c3df R14: 00007f8e716d7300 R15: 0000000000022000
</TASK>