======================================================
WARNING: possible circular locking dependency detected
5.19.0-next-20220812 #1 Not tainted
------------------------------------------------------
syz-executor.5/6080 is trying to acquire lock:
ffff88800fef8170 (&journal->j_barrier){+.+.}-{3:3}, at: jbd2_journal_lock_updates+0x15e/0x310

but task is already holding lock:
ffff88800fdf6bd0 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x177/0x530

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&sbi->s_writepages_rwsem){++++}-{0:0}:
       ext4_writepages+0x1d2/0x3690
       do_writepages+0x1b0/0x6a0
       filemap_fdatawrite_wbc+0x147/0x1b0
       __filemap_fdatawrite_range+0xb6/0x100
       filemap_write_and_wait_range+0x89/0x110
       __iomap_dio_rw+0x5ed/0x1bd0
       iomap_dio_rw+0x3c/0xa0
       ext4_file_read_iter+0x268/0x400
       generic_file_splice_read+0x187/0x4d0
       do_splice_to+0x1bc/0x240
       splice_direct_to_actor+0x2ac/0x8c0
       do_splice_direct+0x1b8/0x290
       do_sendfile+0xb1d/0x1280
       __x64_sys_sendfile64+0x1d1/0x210
       do_syscall_64+0x3b/0x90
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #2 (&sb->s_type->i_mutex_key#6){++++}-{3:3}:
       down_read+0x98/0x450
       ext4_bmap+0x4e/0x470
       bmap+0xac/0x120
       jbd2_journal_bmap+0xa8/0x180
       jbd2_journal_flush+0x853/0xc00
       __ext4_ioctl+0x9e9/0x4090
       __x64_sys_ioctl+0x19a/0x210
       do_syscall_64+0x3b/0x90
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #1 (&journal->j_checkpoint_mutex){+.+.}-{3:3}:
       mutex_lock_io_nested+0x148/0x1310
       jbd2_journal_flush+0x19a/0xc00
       __ext4_ioctl+0x9e9/0x4090
       __x64_sys_ioctl+0x19a/0x210
       do_syscall_64+0x3b/0x90
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

-> #0 (&journal->j_barrier){+.+.}-{3:3}:
       __lock_acquire+0x2a02/0x5e70
       lock_acquire+0x1a2/0x530
       __mutex_lock+0x136/0x14d0
       jbd2_journal_lock_updates+0x15e/0x310
       ext4_change_inode_journal_flag+0x17f/0x530
       ext4_fileattr_set+0x140d/0x18a0
       vfs_fileattr_set+0x77c/0xb80
       do_vfs_ioctl+0xfc2/0x1610
       __x64_sys_ioctl+0x10c/0x210
       do_syscall_64+0x3b/0x90
       entry_SYSCALL_64_after_hwframe+0x63/0xcd

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.5/6080:
 #0: ffff88800fdf4438 (sb_writers#3){.+.+}-{0:0}, at: do_vfs_ioctl+0xf87/0x1610
 #1: ffff88801d7897e0 (&sb->s_type->i_mutex_key#6){++++}-{3:3}, at: vfs_fileattr_set+0x148/0xb80
 #2: ffff88801d789980 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_change_inode_journal_flag+0x11e/0x530
 #3: ffff88800fdf6bd0 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_change_inode_journal_flag+0x177/0x530

stack backtrace:
CPU: 0 PID: 6080 Comm: syz-executor.5 Not tainted 5.19.0-next-20220812 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 check_noncircular+0x263/0x2e0
 __lock_acquire+0x2a02/0x5e70
 lock_acquire+0x1a2/0x530
 __mutex_lock+0x136/0x14d0
 jbd2_journal_lock_updates+0x15e/0x310
 ext4_change_inode_journal_flag+0x17f/0x530
 ext4_fileattr_set+0x140d/0x18a0
 vfs_fileattr_set+0x77c/0xb80
 do_vfs_ioctl+0xfc2/0x1610
 __x64_sys_ioctl+0x10c/0x210
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0ecee7cb19
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:00007f0ecc3f2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0ecef8ff60 RCX: 00007f0ecee7cb19
RDX: 0000000020000080 RSI: 0000000040086602 RDI: 0000000000000004
RBP: 00007f0eceed6f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf02888bf R14: 00007f0ecc3f2300 R15: 0000000000022000
 </TASK>
capability: warning: `syz-executor.2' uses deprecated v2 capabilities in a way that may be insecure
debugfs: Directory '0' with parent 'hci7' already present!
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0'
CPU: 0 PID: 309 Comm: kworker/u5:3 Not tainted 5.19.0-next-20220812 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: hci7 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 sysfs_warn_dup.cold+0x1c/0x29
 sysfs_create_dir_ns+0x237/0x290
 kobject_add_internal+0x24c/0x8e0
 kobject_add+0x150/0x1c0
 device_add+0x35e/0x1ec0
 hci_conn_add_sysfs+0x91/0x110
 le_conn_complete_evt+0x117f/0x17d0
 hci_le_enh_conn_complete_evt+0x22b/0x2d0
 hci_le_meta_evt+0x2c0/0x4a0
 hci_event_packet+0x636/0xf60
 hci_rx_work+0xa82/0x1000
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>
kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci7: failed to register connection device
debugfs: Directory '0' with parent 'hci7' already present!
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0'
CPU: 1 PID: 319 Comm: kworker/u5:6 Not tainted 5.19.0-next-20220812 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: hci7 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 sysfs_warn_dup.cold+0x1c/0x29
 sysfs_create_dir_ns+0x237/0x290
 kobject_add_internal+0x24c/0x8e0
 kobject_add+0x150/0x1c0
 device_add+0x35e/0x1ec0
 hci_conn_add_sysfs+0x91/0x110
 le_conn_complete_evt+0x117f/0x17d0
 hci_le_enh_conn_complete_evt+0x22b/0x2d0
 hci_le_meta_evt+0x2c0/0x4a0
 hci_event_packet+0x636/0xf60
 hci_rx_work+0xa82/0x1000
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>
kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci7: failed to register connection device
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
blk_print_req_error: 11 callbacks suppressed
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
buffer_io_error: 30 callbacks suppressed
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 2, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 3, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 4, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 5, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 6, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 7, async page read
debugfs: Directory '0' with parent 'hci7' already present!
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0'
CPU: 0 PID: 309 Comm: kworker/u5:3 Not tainted 5.19.0-next-20220812 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: hci7 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 sysfs_warn_dup.cold+0x1c/0x29
 sysfs_create_dir_ns+0x237/0x290
 kobject_add_internal+0x24c/0x8e0
 kobject_add+0x150/0x1c0
 device_add+0x35e/0x1ec0
 hci_conn_add_sysfs+0x91/0x110
 le_conn_complete_evt+0x117f/0x17d0
 hci_le_enh_conn_complete_evt+0x22b/0x2d0
 hci_le_meta_evt+0x2c0/0x4a0
 hci_event_packet+0x636/0xf60
 hci_rx_work+0xa82/0x1000
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>
kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci7: failed to register connection device
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
debugfs: Directory '0' with parent 'hci7' already present!
sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci7/hci7:0'
CPU: 0 PID: 309 Comm: kworker/u5:3 Not tainted 5.19.0-next-20220812 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Workqueue: hci7 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 sysfs_warn_dup.cold+0x1c/0x29
 sysfs_create_dir_ns+0x237/0x290
 kobject_add_internal+0x24c/0x8e0
 kobject_add+0x150/0x1c0
 device_add+0x35e/0x1ec0
 hci_conn_add_sysfs+0x91/0x110
 le_conn_complete_evt+0x117f/0x17d0
 hci_le_enh_conn_complete_evt+0x22b/0x2d0
 hci_le_meta_evt+0x2c0/0x4a0
 hci_event_packet+0x636/0xf60
 hci_rx_work+0xa82/0x1000
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>
kobject_add_internal failed for hci7:0 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci7: failed to register connection device
TCP: TCP_TX_DELAY enabled
Bluetooth: hci7: command 0x2016 tx timeout
/dev/sg0: Can't open blockdev
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket pid=6328 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=17 sclass=netlink_audit_socket pid=6328 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket pid=6329 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=17 sclass=netlink_audit_socket pid=6329 comm=syz-executor.3
Bluetooth: hci6: unexpected event 0x3e length: 262 > 260
Bluetooth: hci6: unexpected subevent 0x0d length: 261 > 260
Bluetooth: hci6: unexpected event 0x3e length: 262 > 260
Bluetooth: hci6: unexpected subevent 0x0d length: 261 > 260
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket pid=6347 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=17 sclass=netlink_audit_socket pid=6347 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket pid=6363 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=17 sclass=netlink_audit_socket pid=6363 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket pid=6370 comm=syz-executor.3
SELinux: unrecognized netlink message: protocol=9 nlmsg_type=17 sclass=netlink_audit_socket pid=6370 comm=syz-executor.3
Bluetooth: hci7: command 0x2016 tx timeout
autofs4:pid:6588:autofs_fill_super: called with bogus options
autofs4:pid:6607:autofs_fill_super: called with bogus options
Bluetooth: hci7: command 0x2016 tx timeout
autofs4:pid:6623:autofs_fill_super: called with bogus options
warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow
autofs4:pid:6638:autofs_fill_super: called with bogus options