======================================================
WARNING: possible circular locking dependency detected
6.2.0-rc1-next-20221226 #1 Not tainted
------------------------------------------------------
syz-executor.1/13542 is trying to acquire lock:
ffff88800ff24170 (&journal->j_barrier){+.+.}-{3:3}, at: jbd2_journal_lock_updates+0x162/0x310

but task is already holding lock:
ffff88800ff22b90 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x17f/0x550

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_write+0x51/0x350
       ext4_ind_migrate+0x23b/0x840
       ext4_fileattr_set+0x1521/0x19f0
       vfs_fileattr_set+0x780/0xb90
       do_vfs_ioctl+0xfa6/0x15d0
       __x64_sys_ioctl+0x110/0x210
       do_syscall_64+0x3f/0x90
       entry_SYSCALL_64_after_hwframe+0x72/0xdc

-> #2 (&sb->s_type->i_mutex_key#6){++++}-{3:3}:
       down_read+0x9c/0x450
       ext4_bmap+0x52/0x470
       bmap+0xb0/0x130
       jbd2_journal_bmap+0xac/0x190
       jbd2_journal_flush+0x857/0xc10
       __ext4_ioctl+0x9db/0x43b0
       __x64_sys_ioctl+0x19e/0x210
       do_syscall_64+0x3f/0x90
       entry_SYSCALL_64_after_hwframe+0x72/0xdc

-> #1 (&journal->j_checkpoint_mutex){+.+.}-{3:3}:
       mutex_lock_io_nested+0x14c/0x1330
       jbd2_journal_flush+0x19e/0xc10
       ext4_ioctl_group_add+0x2b3/0x580
       __ext4_ioctl+0x6a2/0x43b0
       __x64_sys_ioctl+0x19e/0x210
       do_syscall_64+0x3f/0x90
       entry_SYSCALL_64_after_hwframe+0x72/0xdc

-> #0 (&journal->j_barrier){+.+.}-{3:3}:
       __lock_acquire+0x2a02/0x5e70
       lock_acquire.part.0+0x11e/0x340
       __mutex_lock+0x136/0x14e0
       jbd2_journal_lock_updates+0x162/0x310
       ext4_change_inode_journal_flag+0x187/0x550
       ext4_fileattr_set+0x14fa/0x19f0
       vfs_fileattr_set+0x780/0xb90
       do_vfs_ioctl+0xfa6/0x15d0
       __x64_sys_ioctl+0x110/0x210
       do_syscall_64+0x3f/0x90
       entry_SYSCALL_64_after_hwframe+0x72/0xdc

other info that might help us debug this:

Chain exists of:
  &journal->j_barrier --> &sb->s_type->i_mutex_key#6 --> &sbi->s_writepages_rwsem

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&sbi->s_writepages_rwsem);
                               lock(&sb->s_type->i_mutex_key#6);
                               lock(&sbi->s_writepages_rwsem);
  lock(&journal->j_barrier);

 *** DEADLOCK ***

4 locks held by syz-executor.1/13542:
 #0: ffff88800ff20438 (sb_writers#3){.+.+}-{0:0}, at: do_vfs_ioctl+0xf6b/0x15d0
 #1: ffff88801b3b21d0 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: vfs_fileattr_set+0x14c/0xb90
 #2: ffff88801b3b2370 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_change_inode_journal_flag+0x126/0x550
 #3: ffff88800ff22b90 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x17f/0x550

stack backtrace:
CPU: 0 PID: 13542 Comm: syz-executor.1 Not tainted 6.2.0-rc1-next-20221226 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8f/0xb7
 check_noncircular+0x263/0x2e0
 __lock_acquire+0x2a02/0x5e70
 lock_acquire.part.0+0x11e/0x340
 __mutex_lock+0x136/0x14e0
 jbd2_journal_lock_updates+0x162/0x310
 ext4_change_inode_journal_flag+0x187/0x550
 ext4_fileattr_set+0x14fa/0x19f0
 vfs_fileattr_set+0x780/0xb90
 do_vfs_ioctl+0xfa6/0x15d0
 __x64_sys_ioctl+0x110/0x210
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f7cc4b67b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7cc20dd188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7cc4c7af60 RCX: 00007f7cc4b67b19
RDX: 0000000020001780 RSI: 0000000040086602 RDI: 0000000000000003
RBP: 00007f7cc4bc1f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc6406eeaf R14: 00007f7cc20dd300 R15: 0000000000022000
 </TASK>
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 13653 Comm: syz-executor.5 Not tainted 6.2.0-rc1-next-20221226 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8f/0xb7
 should_fail_ex.cold+0x5/0xa
 should_failslab+0x9/0x20
 kmem_cache_alloc+0x5a/0x410
 skb_clone+0x172/0x3c0
 dev_queue_xmit_nit+0x39c/0xb10
 dev_hard_start_xmit+0xa7/0x810
 sch_direct_xmit+0x263/0x7b0
 __dev_queue_xmit+0x149a/0x38d0
 packet_sendmsg+0x33f5/0x5470
 sock_sendmsg+0x158/0x190
 ____sys_sendmsg+0x337/0x930
 ___sys_sendmsg+0x110/0x1b0
 __sys_sendmmsg+0x18f/0x460
 __x64_sys_sendmmsg+0x9d/0x110
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f4e34c25b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4e3219b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f4e34d38f60 RCX: 00007f4e34c25b19
RDX: 0000000000000001 RSI: 0000000020001240 RDI: 0000000000000004
RBP: 00007f4e3219b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd8c4e757f R14: 00007f4e3219b300 R15: 0000000000022000
 </TASK>
Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1
ieee80211 phy40: Selected rate control algorithm 'minstrel_ht'
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 13684 Comm: syz-executor.6 Not tainted 6.2.0-rc1-next-20221226 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8f/0xb7
 should_fail_ex.cold+0x5/0xa
 _copy_from_user+0x2e/0x180
 copy_msghdr_from_user+0x89/0x150
 ___sys_sendmsg+0xdd/0x1b0
 __sys_sendmmsg+0x18f/0x460
 __x64_sys_sendmmsg+0x9d/0x110
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f3677d6cb19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36752e2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f3677e7ff60 RCX: 00007f3677d6cb19
RDX: 0000000000000001 RSI: 0000000020001240 RDI: 0000000000000004
RBP: 00007f36752e21d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff8d2e79df R14: 00007f36752e2300 R15: 0000000000022000
 </TASK>
ieee80211 phy41: Selected rate control algorithm 'minstrel_ht'