====================================================== WARNING: possible circular locking dependency detected 4.19.0-rc5+ #243 Not tainted ------------------------------------------------------ syz-executor4/24010 is trying to acquire lock: 00000000510a0b54 ((wq_completion)bond_dev->name){+.+.}, at: flush_workqueue+0x2db/0x1e10 kernel/workqueue.c:2652 kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env but task is already holding lock: 00000000a644ff77 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] 00000000a644ff77 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4727 which lock already depends on the new lock. kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' 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 kobject: 'loop3' (0000000082cce86c): kobject_uevent_env ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413 kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' -> #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:8410 bond_newlink+0x49/0xa0 drivers/net/bonding/bond_netlink.c:453 rtnl_newlink+0xec6/0x1d40 net/core/rtnetlink.c:3118 rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4730 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4748 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901 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 other info that might help us debug this: kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env 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( kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' (work_completion)(&(&nnw->work)->work)); lock(rtnl_mutex); lock((wq_completion)bond_dev->name); *** DEADLOCK *** 1 lock held by syz-executor4/24010: #0: 00000000a644ff77 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000a644ff77 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40e/0xc20 net/core/rtnetlink.c:4727 stack backtrace: CPU: 1 PID: 24010 Comm: syz-executor4 Not tainted 4.19.0-rc5+ #243 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 kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env destroy_workqueue+0xc6/0x9c0 kernel/workqueue.c:4155 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): 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:8410 bond_newlink+0x49/0xa0 drivers/net/bonding/bond_netlink.c:453 rtnl_newlink+0xec6/0x1d40 net/core/rtnetlink.c:3118 rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4730 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4748 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901 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:00007fb5e4cafc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb5e4cb06d4 R13: 00000000004c38b9 R14: 00000000004d5700 R15: 00000000ffffffff kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env device team0 entered promiscuous mode kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' device team_slave_0 entered promiscuous mode device team_slave_1 entered promiscuous mode kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env CPU: 0 PID: 24781 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' 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 kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' __should_failslab+0x124/0x180 mm/failslab.c:32 kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env should_failslab+0x9/0x14 mm/slab_common.c:1557 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env alloc_skb include/linux/skbuff.h:997 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline] netlink_sendmsg+0xb29/0xfc0 net/netlink/af_netlink.c:1876 kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' __sys_sendmsg+0x11d/0x280 net/socket.c:2154 kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env __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 kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env 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:00007f04e682bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f04e682bc90 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' R10: 0000000000000000 R11: 0000000000000246 R12: 00007f04e682c6d4 R13: 00000000004c38b9 R14: 00000000004d5700 R15: 0000000000000004 kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' CPU: 0 PID: 24805 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 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 __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_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x270/0x740 mm/slab.c:3661 __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 __alloc_skb+0x155/0x770 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:997 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline] netlink_sendmsg+0xb29/0xfc0 net/netlink/af_netlink.c:1876 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 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:00007f04e682bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f04e682bc90 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f04e682c6d4 R13: 00000000004c38b9 R14: 00000000004d5700 R15: 0000000000000004 CPU: 1 PID: 24825 Comm: syz-executor3 Not tainted 4.19.0-rc5+ #243 kobject: 'loop3' (0000000082cce86c): kobject_uevent_env 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 kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'loop0' (000000004fb3ab99): kobject_uevent_env kobject: 'loop0' (000000004fb3ab99): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642 __alloc_skb+0x119/0x770 net/core/skbuff.c:193 kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' alloc_skb include/linux/skbuff.h:997 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline] netlink_sendmsg+0xb29/0xfc0 net/netlink/af_netlink.c:1876 kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env __sys_sendmsg+0x11d/0x280 net/socket.c:2154 kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' __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 kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' entry_SYSCALL_64_after_hwframe+0x49/0xbe kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env RIP: 0033:0x457579 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' 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:00007f7985facc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e kobject: 'loop3' (0000000082cce86c): kobject_uevent_env RAX: ffffffffffffffda RBX: 00007f7985facc90 RCX: 0000000000457579 kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7985fad6d4 R13: 00000000004c38b9 R14: 00000000004d5700 R15: 0000000000000004 kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env CPU: 1 PID: 24837 Comm: syz-executor3 Not tainted 4.19.0-rc5+ #243 kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' 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 kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' __should_failslab+0x124/0x180 mm/failslab.c:32 kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env should_failslab+0x9/0x14 mm/slab_common.c:1557 kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x270/0x740 mm/slab.c:3661 kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env __do_kmalloc_node mm/slab.c:3681 [inline] __kmalloc_node_track_caller+0x33/0x70 mm/slab.c:3696 __kmalloc_reserve.isra.39+0x41/0xe0 net/core/skbuff.c:137 __alloc_skb+0x155/0x770 net/core/skbuff.c:205 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' alloc_skb include/linux/skbuff.h:997 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline] netlink_sendmsg+0xb29/0xfc0 net/netlink/af_netlink.c:1876 kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env __sys_sendmsg+0x11d/0x280 net/socket.c:2154 kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env __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 kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env 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:00007f7985facc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f7985facc90 RCX: 0000000000457579 kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7985fad6d4 R13: 00000000004c38b9 R14: 00000000004d5700 R15: 0000000000000004 CPU: 0 PID: 24841 Comm: syz-executor5 Not tainted 4.19.0-rc5+ #243 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 kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1557 kobject: 'loop3' (0000000082cce86c): kobject_uevent_env slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2d4/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] kzalloc include/linux/slab.h:707 [inline] fib_create_info+0x9e5/0x4630 net/ipv4/fib_semantics.c:1084 kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000e8cf6b3e): kobject_uevent_env kobject: 'loop2' (00000000e8cf6b3e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env kobject: 'loop5' (0000000090e50e6a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env fib_table_insert+0x1ba/0x17d0 net/ipv4/fib_trie.c:1146 kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000082cce86c): kobject_uevent_env inet_rtm_newroute+0x159/0x290 net/ipv4/fib_frontend.c:798 kobject: 'loop3' (0000000082cce86c): fill_kobj_path: path = '/devices/virtual/block/loop3' rtnetlink_rcv_msg+0x46a/0xc20 net/core/rtnetlink.c:4730 kobject: 'loop1' (00000000fdf96f40): kobject_uevent_env netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2447 kobject: 'loop1' (00000000fdf96f40): fill_kobj_path: path = '/devices/virtual/block/loop1' rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:4748 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336 kobject: 'loop4' (0000000010e73f8c): kobject_uevent_env netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1901 kobject: 'loop4' (0000000010e73f8c): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000090e50e6a): kobject_uevent_env