netlink: 'syz-executor.0': attribute type 10 has an invalid length.
batman_adv: batadv0: Interface deactivated: team0
batman_adv: batadv0: Removing interface: team0
======================================================
WARNING: possible circular locking dependency detected
4.19.211-syzkaller #0 Not tainted
------------------------------------------------------
kworker/0:4/9321 is trying to acquire lock:
000000004ea27e59 (&sb->s_type->i_mutex_key#10){++++}, at: inode_lock include/linux/fs.h:748 [inline]
000000004ea27e59 (&sb->s_type->i_mutex_key#10){++++}, at: __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989

but task is already holding lock:
00000000258939fc ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 ((work_completion)(&dio->complete_work)){+.+.}:
       worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
       kthread+0x33f/0x460 kernel/kthread.c:259
       ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

-> #1 ((wq_completion)"dio/%s"sb->s_id){+.+.}:
       drain_workqueue+0x1a5/0x460 kernel/workqueue.c:2826
       destroy_workqueue+0x75/0x790 kernel/workqueue.c:4183
       __alloc_workqueue_key+0xb76/0xed0 kernel/workqueue.c:4160
       sb_init_dio_done_wq+0x34/0x90 fs/direct-io.c:623
       do_blockdev_direct_IO fs/direct-io.c:1285 [inline]
       __blockdev_direct_IO+0x5f55/0xef40 fs/direct-io.c:1419
       ext4_direct_IO_write fs/ext4/inode.c:3777 [inline]
       ext4_direct_IO+0xae4/0x1c50 fs/ext4/inode.c:3915
       generic_file_direct_write+0x208/0x4a0 mm/filemap.c:3073
       __generic_file_write_iter+0x2d0/0x610 mm/filemap.c:3252
       ext4_file_write_iter+0x2fe/0xf20 fs/ext4/file.c:272
       call_write_iter include/linux/fs.h:1821 [inline]
       aio_write+0x37f/0x5c0 fs/aio.c:1574
       __io_submit_one fs/aio.c:1858 [inline]
       io_submit_one+0xecd/0x20c0 fs/aio.c:1909
       __do_sys_io_submit fs/aio.c:1953 [inline]
       __se_sys_io_submit+0x11b/0x4a0 fs/aio.c:1924
       do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #0 (&sb->s_type->i_mutex_key#10){++++}:
       down_write+0x34/0x90 kernel/locking/rwsem.c:70
       inode_lock include/linux/fs.h:748 [inline]
       __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989
       ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118
       vfs_fsync_range+0x13a/0x220 fs/sync.c:197
       generic_write_sync include/linux/fs.h:2750 [inline]
       dio_complete+0x763/0xac0 fs/direct-io.c:329
       process_one_work+0x864/0x1570 kernel/workqueue.c:2153
       worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
       kthread+0x33f/0x460 kernel/kthread.c:259
       ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

other info that might help us debug this:

Chain exists of:
  &sb->s_type->i_mutex_key#10 --> (wq_completion)"dio/%s"sb->s_id --> (work_completion)(&dio->complete_work)

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock((work_completion)(&dio->complete_work));
                               lock((wq_completion)"dio/%s"sb->s_id);
                               lock((work_completion)(&dio->complete_work));
  lock(&sb->s_type->i_mutex_key#10);

 *** DEADLOCK ***

2 locks held by kworker/0:4/9321:
 #0: 000000000fa949c9 ((wq_completion)"dio/%s"sb->s_id){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
 #1: 00000000258939fc ((work_completion)(&dio->complete_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128

stack backtrace:
CPU: 0 PID: 9321 Comm: kworker/0:4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Workqueue: dio/sda1 dio_aio_complete_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222
 check_prev_add kernel/locking/lockdep.c:1866 [inline]
 check_prevs_add kernel/locking/lockdep.c:1979 [inline]
 validate_chain kernel/locking/lockdep.c:2420 [inline]
 __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 down_write+0x34/0x90 kernel/locking/rwsem.c:70
 inode_lock include/linux/fs.h:748 [inline]
 __generic_file_fsync+0xb0/0x1f0 fs/libfs.c:989
 ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118
 vfs_fsync_range+0x13a/0x220 fs/sync.c:197
 generic_write_sync include/linux/fs.h:2750 [inline]
 dio_complete+0x763/0xac0 fs/direct-io.c:329
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
EXT4-fs: failed to create workqueue
EXT4-fs (loop0): mount failed
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26473 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x46/0x380 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 tipc_group_create+0xb7/0x8e0 net/tipc/group.c:171
 tipc_sk_join net/tipc/socket.c:2832 [inline]
 tipc_setsockopt+0x246/0x9f0 net/tipc/socket.c:2947
 __sys_setsockopt+0x14d/0x240 net/socket.c:2013
 __do_sys_setsockopt net/socket.c:2024 [inline]
 __se_sys_setsockopt net/socket.c:2021 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2021
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f79c7aaa409
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:00007f79c641f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f79c7bbcf80 RCX: 00007f79c7aaa409
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003
RBP: 00007f79c641f1d0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe99908baf R14: 00007f79c641f300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26520 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x46/0x380 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 tipc_conn_alloc+0x43/0x4f0 net/tipc/topsrv.c:192
 tipc_topsrv_kern_subscr+0x273/0x790 net/tipc/topsrv.c:580
 tipc_group_create+0x5c6/0x8e0 net/tipc/group.c:189
 tipc_sk_join net/tipc/socket.c:2832 [inline]
 tipc_setsockopt+0x246/0x9f0 net/tipc/socket.c:2947
 __sys_setsockopt+0x14d/0x240 net/socket.c:2013
 __do_sys_setsockopt net/socket.c:2024 [inline]
 __se_sys_setsockopt net/socket.c:2021 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2021
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f79c7aaa409
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:00007f79c641f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f79c7bbcf80 RCX: 00007f79c7aaa409
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003
RBP: 00007f79c641f1d0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe99908baf R14: 00007f79c641f300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 26560 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x46/0x380 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 tipc_sub_subscribe+0x14b/0x590 net/tipc/subscr.c:143
 tipc_conn_rcv_sub+0x319/0x600 net/tipc/topsrv.c:382
 tipc_topsrv_kern_subscr+0x477/0x790 net/tipc/topsrv.c:586
 tipc_group_create+0x5c6/0x8e0 net/tipc/group.c:189
 tipc_sk_join net/tipc/socket.c:2832 [inline]
 tipc_setsockopt+0x246/0x9f0 net/tipc/socket.c:2947
 __sys_setsockopt+0x14d/0x240 net/socket.c:2013
 __do_sys_setsockopt net/socket.c:2024 [inline]
 __se_sys_setsockopt net/socket.c:2021 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2021
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f79c7aaa409
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:00007f79c641f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f79c7bbcf80 RCX: 00007f79c7aaa409
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003
RBP: 00007f79c641f1d0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe99908baf R14: 00007f79c641f300 R15: 0000000000022000
Subscription rejected, no memory
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26637 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x46/0x380 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 tipc_service_create+0x45/0x240 net/tipc/name_table.c:122
 tipc_nametbl_subscribe+0xbfd/0xe00 net/tipc/name_table.c:688
 tipc_sub_subscribe+0x2ec/0x590 net/tipc/subscr.c:156
 tipc_conn_rcv_sub+0x319/0x600 net/tipc/topsrv.c:382
 tipc_topsrv_kern_subscr+0x477/0x790 net/tipc/topsrv.c:586
 tipc_group_create+0x5c6/0x8e0 net/tipc/group.c:189
 tipc_sk_join net/tipc/socket.c:2832 [inline]
 tipc_setsockopt+0x246/0x9f0 net/tipc/socket.c:2947
 __sys_setsockopt+0x14d/0x240 net/socket.c:2013
 __do_sys_setsockopt net/socket.c:2024 [inline]
 __se_sys_setsockopt net/socket.c:2021 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2021
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f79c7aaa409
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:00007f79c641f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f79c7bbcf80 RCX: 00007f79c7aaa409
RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003
RBP: 00007f79c641f1d0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe99908baf R14: 00007f79c641f300 R15: 0000000000022000
Service creation failed, no memory
Failed to subscribe for {64,0,4294967295}
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 26668 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0xf lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0x10 mm/slab_common.c:1590
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc_trace+0x46/0x380 mm/slab.c:3623
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 tipc_service_create_range net/tipc/name_table.c:207 [inline]
 tipc_service_insert_publ net/tipc/name_table.c:231 [inline]
 tipc_nametbl_insert_publ+0x3ee/0x14c0 net/tipc/name_table.c:357
 tipc_nametbl_publish+0x573/0x930 net/tipc/name_table.c:626
 tipc_sk_publish+0x1cd/0x400 net/tipc/socket.c:2664
 tipc_sk_join net/tipc/socket.c:2843 [inline]
 tipc_setsockopt+0x3b4/0x9f0 net/tipc/socket.c:2947
 __sys_setsockopt+0x14d/0x240 net/socket.c:2013
 __do_sys_setsockopt net/socket.c:2024 [inline]
 __se_sys_setsockopt net/socket.c:2021 [inline]
 __x64_sys_setsockopt+0xba/0x150 net/socket.c:2021
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f79c7aaa409
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