======================================================
WARNING: possible circular locking dependency detected
4.19.0-rc6+ #265 Not tainted
------------------------------------------------------
syz-executor4/8013 is trying to acquire lock:
0000000047b9031f ((wq_completion)bond_dev->name){+.+.}, at: flush_workqueue+0x2db/0x1e10 kernel/workqueue.c:2652

but task is already holding lock:
00000000c87b70ca (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
00000000c87b70ca (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4712

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (rtnl_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:925 [inline]
       __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072
       mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
       rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77
       bond_netdev_notify drivers/net/bonding/bond_main.c:1303 [inline]
       bond_netdev_notify_work+0x44/0xd0 drivers/net/bonding/bond_main.c:1313
       process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153
       worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
       kthread+0x35a/0x420 kernel/kthread.c:246
       ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413

-> #1 ((work_completion)(&(&nnw->work)->work)){+.+.}:
       process_one_work+0xc0a/0x1b90 kernel/workqueue.c:2129
       worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
       kthread+0x35a/0x420 kernel/kthread.c:246
       ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413

-> #0 ((wq_completion)bond_dev->name){+.+.}:
       lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900
       flush_workqueue+0x30a/0x1e10 kernel/workqueue.c:2655
       drain_workqueue+0x2a9/0x640 kernel/workqueue.c:2820
       destroy_workqueue+0xc6/0x9c0 kernel/workqueue.c:4155
       __alloc_workqueue_key+0xed8/0x1170 kernel/workqueue.c:4138
       bond_init+0x265/0x940 drivers/net/bonding/bond_main.c:4727
       register_netdevice+0x332/0x10f0 net/core/dev.c:8409
       bond_newlink+0x49/0xa0 drivers/net/bonding/bond_netlink.c:453
       rtnl_newlink+0xec6/0x1d40 net/core/rtnetlink.c:3103
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
       rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4715
       netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2454
       rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4733
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
       netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
       netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1343
       netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1908
       sock_sendmsg_nosec net/socket.c:621 [inline]
       sock_sendmsg+0xd5/0x120 net/socket.c:631
       ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
       __sys_sendmsg+0x11d/0x280 net/socket.c:2154
       __do_sys_sendmsg net/socket.c:2163 [inline]
       __se_sys_sendmsg net/socket.c:2161 [inline]
       __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161
       do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'

other info that might help us debug this:

Chain exists of:
  (wq_completion)bond_dev->name --> (work_completion)(&(&nnw->work)->work) --> rtnl_mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(rtnl_mutex);
                               lock((work_completion)(&(&nnw->work)->work)
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
);
                               lock(rtnl_mutex);
  lock((wq_completion)bond_dev->name);

 *** DEADLOCK ***

1 lock held by syz-executor4/8013:
 #0: 00000000c87b70ca (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
 #0: 00000000c87b70ca (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4712

stack backtrace:
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
CPU: 0 PID: 8013 Comm: syz-executor4 Not tainted 4.19.0-rc6+ #265
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 print_circular_bug.isra.33.cold.54+0x1bd/0x27d kernel/locking/lockdep.c:1221
 check_prev_add kernel/locking/lockdep.c:1861 [inline]
 check_prevs_add kernel/locking/lockdep.c:1974 [inline]
 validate_chain kernel/locking/lockdep.c:2415 [inline]
 __lock_acquire+0x33e4/0x4ec0 kernel/locking/lockdep.c:3411
 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900
 flush_workqueue+0x30a/0x1e10 kernel/workqueue.c:2655
 drain_workqueue+0x2a9/0x640 kernel/workqueue.c:2820
 destroy_workqueue+0xc6/0x9c0 kernel/workqueue.c:4155
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __alloc_workqueue_key+0xed8/0x1170 kernel/workqueue.c:4138
 bond_init+0x265/0x940 drivers/net/bonding/bond_main.c:4727
 register_netdevice+0x332/0x10f0 net/core/dev.c:8409
 bond_newlink+0x49/0xa0 drivers/net/bonding/bond_netlink.c:453
 rtnl_newlink+0xec6/0x1d40 net/core/rtnetlink.c:3103
 rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4715
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2454
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4733
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:621 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:631
 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116
 __sys_sendmsg+0x11d/0x280 net/socket.c:2154
 __do_sys_sendmsg net/socket.c:2163 [inline]
 __se_sys_sendmsg net/socket.c:2161 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457579
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f34a8402c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000006
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f34a84036d4
R13: 00000000004c38b9 R14: 00000000004d5700 R15: 00000000ffffffff
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'kvm' (000000000f446a1a): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000f446a1a): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000f446a1a): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000000f446a1a): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'kvm' (000000000f446a1a): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000f446a1a): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000f446a1a): kobject_uevent_env
kobject: 'kvm' (000000000f446a1a): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'.
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
dccp_close: ABORT with 106496 bytes unread
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
dccp_close: ABORT with 98304 bytes unread
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
dccp_close: ABORT with 106496 bytes unread
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
dccp_close: ABORT with 1061 bytes unread
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
FS-Cache: Duplicate cookie detected
FS-Cache: O-cookie c=00000000230f37ec [p=00000000421e40d2 fl=222 nc=0 na=1]
FS-Cache: O-cookie d=0000000060e02297 n=00000000a7a21579
FS-Cache: O-key=[10] '0200020000807f000008'
FS-Cache: N-cookie c=000000005da4ab50 [p=00000000421e40d2 fl=2 nc=0 na=1]
FS-Cache: N-cookie d=0000000060e02297 n=00000000fe3de1d2
FS-Cache: N-key=[10] '0200020000807f000008'
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
FS-Cache: Duplicate cookie detected
FS-Cache: O-cookie c=000000006f7bb081 [p=00000000421e40d2 fl=222 nc=0 na=1]
FS-Cache: O-cookie d=0000000060e02297 n=00000000ef541cdc
FS-Cache: O-key=[10] '0200020000807f000008'
FS-Cache: N-cookie c=0000000071fe0d2b [p=00000000421e40d2 fl=2 nc=0 na=1]
FS-Cache: N-cookie d=0000000060e02297 n=00000000b78d6a56
FS-Cache: N-key=[10] '0200020000807f000008'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
dccp_close: ABORT with 4096 bytes unread
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
FS-Cache: Duplicate cookie detected
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
FS-Cache: O-cookie c=000000006f7bb081 [p=00000000421e40d2 fl=222 nc=0 na=1]
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
FS-Cache: O-cookie d=0000000060e02297 n=00000000ef541cdc
CPU: 1 PID: 8407 Comm: syz-executor5 Not tainted 4.19.0-rc6+ #265
FS-Cache: O-key=[10] '
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
02
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149
00
02
00
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
00
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x2d7/0x750 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 kzalloc include/linux/slab.h:707 [inline]
 ion_buffer_create drivers/staging/android/ion/ion.c:71 [inline]
 ion_alloc+0x263/0xa60 drivers/staging/android/ion/ion.c:409
80
7f
 ion_ioctl+0x216/0x41e drivers/staging/android/ion/ion-ioctl.c:76
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
00
00
08
'
FS-Cache: N-cookie c=000000005245b91b [p=00000000421e40d2 fl=2 nc=0 na=1]
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
FS-Cache: N-cookie d=0000000060e02297 n=00000000483f0a55
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
FS-Cache: N-key=[10] '
02
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
00
RIP: 0033:0x457579
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff44158ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff44158ac90 RCX: 0000000000457579
RDX: 0000000020000500 RSI: 00000000c0184900 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
02
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff44158b6d4
R13: 00000000004bf97f R14: 00000000004cf928 R15: 0000000000000004
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 1
000080
CPU: 1 PID: 8412 Comm: syz-executor5 Not tainted 4.19.0-rc6+ #265
7f
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
00
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149
00
08
'
 should_fail_alloc_page mm/page_alloc.c:3057 [inline]
 prepare_alloc_pages mm/page_alloc.c:4326 [inline]
 __alloc_pages_nodemask+0x34b/0xde0 mm/page_alloc.c:4364
 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:509 [inline]
 ion_system_contig_heap_allocate+0x3e/0x330 drivers/staging/android/ion/ion_system_heap.c:317
 ion_buffer_create drivers/staging/android/ion/ion.c:80 [inline]
 ion_alloc+0x333/0xa60 drivers/staging/android/ion/ion.c:409
 ion_ioctl+0x216/0x41e drivers/staging/android/ion/ion-ioctl.c:76
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457579
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff44158ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff44158ac90 RCX: 0000000000457579
RDX: 0000000020000500 RSI: 00000000c0184900 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff44158b6d4
R13: 00000000004bf97f R14: 00000000004cf928 R15: 0000000000000004
kobject: 'loop0' (000000008af5dd5f): kobject_uevent_env
kobject: 'loop0' (000000008af5dd5f): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (000000004edd7009): kobject_uevent_env
kobject: 'loop2' (000000004edd7009): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop3' (00000000c31a38ee): kobject_uevent_env
kobject: 'loop3' (00000000c31a38ee): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000005bc25f85): kobject_uevent_env
kobject: 'loop5' (000000005bc25f85): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000253a0a0e): kobject_uevent_env
kobject: 'loop4' (00000000253a0a0e): fill_kobj_path: path = '/devices/virtual/block/loop4'
FS-Cache: Duplicate cookie detected
kobject: 'loop1' (0000000040f9415d): kobject_uevent_env
kobject: 'loop1' (0000000040f9415d): fill_kobj_path: path = '/devices/virtual/block/loop1'
FS-Cache: O-cookie c=0000000088668d7f [p=00000000421e40d2 fl=222 nc=0 na=1]
FS-Cache: O-cookie d=0000000060e02297 n=000000005fa5253b
FS-Cache: O-key=[10] '0200020000807f000008'
FS-Cache: N-cookie c=00000000569251ae [p=00000000421e40d2 fl=2 nc=0 na=1]
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
FS-Cache: N-cookie d=0000000060e02297 n=0000000008bab6f7
CPU: 1 PID: 8430 Comm: syz-executor5 Not tainted 4.19.0-rc6+ #265
FS-Cache: N-key=[10] '
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149
02
00
02
00
00
80
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x2d7/0x750 mm/slab.c:3618
7f
 kmalloc include/linux/slab.h:513 [inline]
 kzalloc include/linux/slab.h:707 [inline]
 ion_buffer_create drivers/staging/android/ion/ion.c:71 [inline]
 ion_alloc+0x263/0xa60 drivers/staging/android/ion/ion.c:409
00
00
 ion_ioctl+0x216/0x41e drivers/staging/android/ion/ion-ioctl.c:76
08
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
'
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457579
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff44158ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ff44158ac90 RCX: 0000000000457579