protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 INFO: task kworker/0:0:5 blocked for more than 140 seconds. Not tainted 4.19.94-syzkaller #0 kobject: 'batman_adv' (000000002b4d8372): kobject_uevent_env "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'batman_adv' (000000002b4d8372): kobject_uevent_env: filter function caused the event to drop! kworker/0:0 D25984 5 2 0x80000000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'batman_adv' (000000002b4d8372): kobject_cleanup, parent (null) kobject: 'batman_adv' (000000002b4d8372): calling ktype release kobject: (000000002b4d8372): dynamic_kobj_release schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'batman_adv': free name kobject: 'rx-0' (000000002e1eacfa): kobject_cleanup, parent 00000000b9ea7fc9 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'rx-0' (000000002e1eacfa): auto cleanup 'remove' event kobject: 'rx-0' (000000002e1eacfa): kobject_uevent_env kobject: 'rx-0' (000000002e1eacfa): fill_kobj_path: path = '/devices/virtual/net/veth792/queues/rx-0' mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'rx-0' (000000002e1eacfa): auto cleanup kobject_del kobject: 'rx-0' (000000002e1eacfa): calling ktype release rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 linkwatch_event+0xf/0x70 net/core/link_watch.c:236 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 kobject: 'rx-0': free name kobject: 'tx-0' (00000000bb3e68bf): kobject_cleanup, parent 00000000b9ea7fc9 kobject: 'tx-0' (00000000bb3e68bf): auto cleanup 'remove' event kobject: 'tx-0' (00000000bb3e68bf): kobject_uevent_env kobject: 'tx-0' (00000000bb3e68bf): fill_kobj_path: path = '/devices/virtual/net/veth792/queues/tx-0' kobject: 'tx-0' (00000000bb3e68bf): auto cleanup kobject_del worker_thread+0x98/0xe40 kernel/workqueue.c:2296 net_ratelimit: 15 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'tx-0' (00000000bb3e68bf): calling ktype release kthread+0x354/0x420 kernel/kthread.c:246 kobject: 'tx-0': free name kobject: 'queues' (00000000b9ea7fc9): kobject_cleanup, parent (null) ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/0:2:2698 blocked for more than 140 seconds. kobject: 'queues' (00000000b9ea7fc9): calling ktype release kobject: 'queues' (00000000b9ea7fc9): kset_release Not tainted 4.19.94-syzkaller #0 kobject: 'queues': free name "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'veth792' (000000001bae9542): kobject_uevent_env kobject: 'veth792' (000000001bae9542): fill_kobj_path: path = '/devices/virtual/net/veth792' kworker/0:2 D25408 2698 2 0x80000000 Workqueue: events switchdev_deferred_process_work kobject: 'batman_adv' (0000000075e5d748): kobject_uevent_env kobject: 'batman_adv' (0000000075e5d748): kobject_uevent_env: filter function caused the event to drop! Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'batman_adv' (0000000075e5d748): kobject_cleanup, parent (null) kobject: 'batman_adv' (0000000075e5d748): calling ktype release kobject: (0000000075e5d748): dynamic_kobj_release kobject: 'batman_adv': free name kobject: 'rx-0' (000000004d5b96ea): kobject_cleanup, parent 00000000488f2c9e kobject: 'rx-0' (000000004d5b96ea): auto cleanup 'remove' event kobject: 'rx-0' (000000004d5b96ea): kobject_uevent_env kobject: 'rx-0' (000000004d5b96ea): kobject_uevent_env: uevent_suppress caused the event to drop! schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: 'rx-0' (000000004d5b96ea): auto cleanup kobject_del schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'rx-0' (000000004d5b96ea): calling ktype release __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'rx-0': free name kobject: 'tx-0' (00000000092ec189): kobject_cleanup, parent 00000000488f2c9e kobject: 'tx-0' (00000000092ec189): auto cleanup 'remove' event kobject: 'tx-0' (00000000092ec189): kobject_uevent_env kobject: 'tx-0' (00000000092ec189): kobject_uevent_env: uevent_suppress caused the event to drop! protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'tx-0' (00000000092ec189): auto cleanup kobject_del kobject: 'tx-0' (00000000092ec189): calling ktype release mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'tx-0': free name rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 kobject: 'queues' (00000000488f2c9e): kobject_cleanup, parent (null) kobject: 'queues' (00000000488f2c9e): calling ktype release switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:150 kobject: 'queues' (00000000488f2c9e): kset_release process_one_work+0x989/0x1750 kernel/workqueue.c:2153 kobject: 'queues': free name kobject: 'veth790' (00000000e11aa4eb): kobject_uevent_env worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 kobject: 'veth790' (00000000e11aa4eb): kobject_uevent_env: uevent_suppress caused the event to drop! ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 kobject: 'rx-0' (0000000084a83dce): kobject_cleanup, parent 0000000018f37dd4 kobject: 'rx-0' (0000000084a83dce): auto cleanup 'remove' event INFO: task syz-executor.0:4036 blocked for more than 140 seconds. Not tainted 4.19.94-syzkaller #0 kobject: 'rx-0' (0000000084a83dce): kobject_uevent_env kobject: 'rx-0' (0000000084a83dce): fill_kobj_path: path = '/devices/virtual/net/bpq724/queues/rx-0' kobject: 'rx-0' (0000000084a83dce): auto cleanup kobject_del "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'rx-0' (0000000084a83dce): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (0000000028f94f1e): kobject_cleanup, parent 0000000018f37dd4 kobject: 'tx-0' (0000000028f94f1e): auto cleanup 'remove' event syz-executor.0 D27960 4036 1354 0x00000004 kobject: 'tx-0' (0000000028f94f1e): kobject_uevent_env kobject: 'tx-0' (0000000028f94f1e): fill_kobj_path: path = '/devices/virtual/net/bpq724/queues/tx-0' Call Trace: kobject: 'tx-0' (0000000028f94f1e): auto cleanup kobject_del kobject: 'tx-0' (0000000028f94f1e): calling ktype release context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'tx-0': free name protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'queues' (0000000018f37dd4): kobject_cleanup, parent (null) kobject: 'queues' (0000000018f37dd4): calling ktype release kobject: 'queues' (0000000018f37dd4): kset_release kobject: 'queues': free name kobject: 'bpq724' (000000001ad82b4a): kobject_uevent_env kobject: 'bpq724' (000000001ad82b4a): fill_kobj_path: path = '/devices/virtual/net/bpq724' schedule+0x92/0x1c0 kernel/sched/core.c:3559 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 wiphy_new_nm+0x182c/0x1e10 net/wireless/core.c:432 ieee80211_alloc_hw_nm+0x35a/0x1e70 net/mac80211/main.c:548 mac80211_hwsim_new_radio+0x1dd/0x3df0 drivers/net/wireless/mac80211_hwsim.c:2659 hwsim_new_radio_nl+0x5eb/0x893 drivers/net/wireless/mac80211_hwsim.c:3374 protocol 88fb is buggy, dev hsr_slave_1 genl_family_rcv_msg+0x6db/0xd30 net/netlink/genetlink.c:602 genl_rcv_msg+0xca/0x170 net/netlink/genetlink.c:627 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 genl_rcv+0x29/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 protocol 88fb is buggy, dev hsr_slave_0 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af49 Code: Bad RIP value. RSP: 002b:00007fe278e6dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe278e6e6d4 R13: 00000000004ca9c5 R14: 00000000004e3e30 R15: 00000000ffffffff INFO: task syz-executor.4:4069 blocked for more than 140 seconds. Not tainted 4.19.94-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28520 4069 1355 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:625 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 genl_rcv+0x29/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af49 Code: Bad RIP value. RSP: 002b:00007fdc38bf4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000006 RBP: 000000000075c268 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdc38bf56d4 R13: 00000000004ca9c5 R14: 00000000004e3e30 R15: 00000000ffffffff INFO: task syz-executor.5:4046 blocked for more than 140 seconds. kobject: 'rx-0' (000000006f318695): kobject_cleanup, parent 0000000034c7585c Not tainted 4.19.94-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D24144 4046 1356 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'rx-0' (000000006f318695): auto cleanup 'remove' event kobject: 'rx-0' (000000006f318695): kobject_uevent_env kobject: 'rx-0' (000000006f318695): fill_kobj_path: path = '/devices/virtual/net/lapb723/queues/rx-0' schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: 'rx-0' (000000006f318695): auto cleanup kobject_del schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'rx-0' (000000006f318695): calling ktype release __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'rx-0': free name kobject: 'tx-0' (0000000048bfc658): kobject_cleanup, parent 0000000034c7585c mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'tx-0' (0000000048bfc658): auto cleanup 'remove' event kobject: 'tx-0' (0000000048bfc658): kobject_uevent_env rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 kobject: 'tx-0' (0000000048bfc658): fill_kobj_path: path = '/devices/virtual/net/lapb723/queues/tx-0' kobject: 'tx-0' (0000000048bfc658): auto cleanup kobject_del kobject: 'tx-0' (0000000048bfc658): calling ktype release netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 kobject: 'tx-0': free name kobject: 'queues' (0000000034c7585c): kobject_cleanup, parent (null) kobject: 'queues' (0000000034c7585c): calling ktype release kobject: 'queues' (0000000034c7585c): kset_release kobject: 'queues': free name rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 kobject: 'lapb723' (00000000e5e18c49): kobject_uevent_env kobject: 'lapb723' (00000000e5e18c49): fill_kobj_path: path = '/devices/virtual/net/lapb723' netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af49 Code: Bad RIP value. RSP: 002b:00007f273a9d0c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f273a9d16d4 R13: 00000000004ca9ed R14: 00000000004e3e60 R15: 00000000ffffffff INFO: task syz-executor.2:4085 blocked for more than 140 seconds. kobject: 'batman_adv' (00000000901945da): kobject_uevent_env Not tainted 4.19.94-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28520 4085 1348 0x00000004 kobject: 'batman_adv' (00000000901945da): kobject_uevent_env: filter function caused the event to drop! Call Trace: kobject: 'batman_adv' (00000000901945da): kobject_cleanup, parent (null) kobject: 'batman_adv' (00000000901945da): calling ktype release context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: (00000000901945da): dynamic_kobj_release kobject: 'batman_adv': free name schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: 'rx-0' (000000002922a5b9): kobject_cleanup, parent 00000000d222ade4 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'rx-0' (000000002922a5b9): auto cleanup 'remove' event kobject: 'rx-0' (000000002922a5b9): kobject_uevent_env kobject: 'rx-0' (000000002922a5b9): fill_kobj_path: path = '/devices/virtual/net/veth791/queues/rx-0' kobject: 'rx-0' (000000002922a5b9): auto cleanup kobject_del kobject: 'rx-0' (000000002922a5b9): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (0000000048983e62): kobject_cleanup, parent 00000000d222ade4 kobject: 'tx-0' (0000000048983e62): auto cleanup 'remove' event mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'tx-0' (0000000048983e62): kobject_uevent_env kobject: 'tx-0' (0000000048983e62): fill_kobj_path: path = '/devices/virtual/net/veth791/queues/tx-0' genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:625 kobject: 'tx-0' (0000000048983e62): auto cleanup kobject_del netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 kobject: 'tx-0' (0000000048983e62): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000d222ade4): kobject_cleanup, parent (null) kobject: 'queues' (00000000d222ade4): calling ktype release kobject: 'queues' (00000000d222ade4): kset_release kobject: 'queues': free name kobject: 'veth791' (000000004e09ee10): kobject_uevent_env genl_rcv+0x29/0x40 net/netlink/genetlink.c:638 kobject: 'veth791' (000000004e09ee10): fill_kobj_path: path = '/devices/virtual/net/veth791' kobject: 'batman_adv' (000000005e6f08f4): kobject_uevent_env netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 kobject: 'batman_adv' (000000005e6f08f4): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (000000005e6f08f4): kobject_cleanup, parent (null) kobject: 'batman_adv' (000000005e6f08f4): calling ktype release kobject: (000000005e6f08f4): dynamic_kobj_release netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 kobject: 'batman_adv': free name kobject: 'rx-0' (0000000049822a92): kobject_cleanup, parent 00000000ce383827 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 kobject: 'rx-0' (0000000049822a92): auto cleanup 'remove' event kobject: 'rx-0' (0000000049822a92): kobject_uevent_env kobject: 'rx-0' (0000000049822a92): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (0000000049822a92): auto cleanup kobject_del kobject: 'rx-0' (0000000049822a92): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000ade673f5): kobject_cleanup, parent 00000000ce383827 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 kobject: 'tx-0' (00000000ade673f5): auto cleanup 'remove' event kobject: 'tx-0' (00000000ade673f5): kobject_uevent_env kobject: 'tx-0' (00000000ade673f5): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (00000000ade673f5): auto cleanup kobject_del kobject: 'tx-0' (00000000ade673f5): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000ce383827): kobject_cleanup, parent (null) kobject: 'queues' (00000000ce383827): calling ktype release kobject: 'queues' (00000000ce383827): kset_release __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 kobject: 'queues': free name do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 kobject: 'veth789' (000000000d715d91): kobject_uevent_env entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x414c01 Code: 0e 18 86 03 41 0e 20 83 04 44 0e 60 03 11 01 0a 0e 20 41 0e 18 41 0e 10 42 0e 08 41 0b 00 00 00 00 34 00 00 00 74 15 00 00 80 <32> ff ff 6a 00 00 00 00 41 0e 10 83 02 49 0e 20 76 0a 0e 10 41 0e kobject: 'veth789' (000000000d715d91): kobject_uevent_env: uevent_suppress caused the event to drop! RSP: 002b:00007f75f26849c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000414c01 RDX: 0000000000000000 RSI: 00007f75f2684a00 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f75f26849d0 R09: 000000000075bf20 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f75f2684a40 R13: 00000000004d5300 R14: 00000000004e6860 R15: 00000000ffffffff INFO: task syz-executor.2:4089 blocked for more than 140 seconds. Not tainted 4.19.94-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28520 4089 1348 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af49 Code: cc 48 8b 05 71 ce 7e 01 48 85 c0 74 6f 48 8b 05 cd c9 7e 01 48 85 c0 74 63 64 48 8b 04 25 f8 ff ff ff 48 85 c0 74 5a 48 8b 40 <30> 48 85 c0 74 4c 8b 88 38 01 00 00 85 c9 74 42 48 8b 88 c0 00 00 RSP: 002b:00007f75f2663c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75f26646d4 R13: 00000000004ca9ed R14: 00000000004e3e60 R15: 00000000ffffffff kobject: 'rx-0' (000000001024efff): kobject_cleanup, parent 0000000046a337c9 INFO: task syz-executor.2:4092 blocked for more than 140 seconds. kobject: 'rx-0' (000000001024efff): auto cleanup 'remove' event Not tainted 4.19.94-syzkaller #0 kobject: 'rx-0' (000000001024efff): kobject_uevent_env kobject: 'rx-0' (000000001024efff): fill_kobj_path: path = '/devices/virtual/net/bpq722/queues/rx-0' "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'rx-0' (000000001024efff): auto cleanup kobject_del kobject: 'rx-0' (000000001024efff): calling ktype release syz-executor.2 D28520 4092 1348 0x00000004 kobject: 'rx-0': free name Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'tx-0' (0000000039a6493d): kobject_cleanup, parent 0000000046a337c9 schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: 'tx-0' (0000000039a6493d): auto cleanup 'remove' event schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'tx-0' (0000000039a6493d): kobject_uevent_env kobject: 'tx-0' (0000000039a6493d): fill_kobj_path: path = '/devices/virtual/net/bpq722/queues/tx-0' kobject: 'tx-0' (0000000039a6493d): auto cleanup kobject_del kobject: 'tx-0' (0000000039a6493d): calling ktype release mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'tx-0': free name rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 kobject: 'queues' (0000000046a337c9): kobject_cleanup, parent (null) kobject: 'queues' (0000000046a337c9): calling ktype release kobject: 'queues' (0000000046a337c9): kset_release netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 kobject: 'queues': free name kobject: 'bpq722' (000000007d0bd185): kobject_uevent_env kobject: 'bpq722' (000000007d0bd185): fill_kobj_path: path = '/devices/virtual/net/bpq722' rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af49 Code: Bad RIP value. RSP: 002b:00007f75f2642c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75f26436d4 R13: 00000000004ca9ed R14: 00000000004e3e60 R15: 00000000ffffffff INFO: task syz-executor.2:4115 blocked for more than 140 seconds. Not tainted 4.19.94-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28520 4115 1348 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 genl_lock net/netlink/genetlink.c:33 [inline] genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:625 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 genl_rcv+0x29/0x40 net/netlink/genetlink.c:638 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x414c01 Code: Bad RIP value. RSP: 002b:00007f75f26219c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000414c01 RDX: 0000000000000000 RSI: 00007f75f2621a00 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007f75f26219d0 R09: 000000000075c118 R10: 0000000000000000 R11: 0000000000000293 R12: 00007f75f2621a40 R13: 00000000004d5300 R14: 00000000004e6860 R15: 00000000ffffffff kobject: 'rx-0' (000000005b40f326): kobject_cleanup, parent 00000000eca0e346 INFO: task syz-executor.2:4117 blocked for more than 140 seconds. kobject: 'rx-0' (000000005b40f326): auto cleanup 'remove' event kobject: 'rx-0' (000000005b40f326): kobject_uevent_env Not tainted 4.19.94-syzkaller #0 kobject: 'rx-0' (000000005b40f326): fill_kobj_path: path = '/devices/virtual/net/lapb721/queues/rx-0' "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'rx-0' (000000005b40f326): auto cleanup kobject_del syz-executor.2 D28520 4117 1348 0x00000004 kobject: 'rx-0' (000000005b40f326): calling ktype release kobject: 'rx-0': free name Call Trace: kobject: 'tx-0' (00000000bd63f677): kobject_cleanup, parent 00000000eca0e346 context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'tx-0' (00000000bd63f677): auto cleanup 'remove' event kobject: 'tx-0' (00000000bd63f677): kobject_uevent_env schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'tx-0' (00000000bd63f677): fill_kobj_path: path = '/devices/virtual/net/lapb721/queues/tx-0' __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'tx-0' (00000000bd63f677): auto cleanup kobject_del kobject: 'tx-0' (00000000bd63f677): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000eca0e346): kobject_cleanup, parent (null) kobject: 'queues' (00000000eca0e346): calling ktype release mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'queues' (00000000eca0e346): kset_release rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 kobject: 'queues': free name kobject: 'lapb721' (00000000fe5388b5): kobject_uevent_env kobject: 'lapb721' (00000000fe5388b5): fill_kobj_path: path = '/devices/virtual/net/lapb721' netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4786 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x53a/0x730 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45af49 Code: Bad RIP value. RSP: 002b:00007f75f25dfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000004 RBP: 000000000075c268 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75f25e06d4 R13: 00000000004ca9ed R14: 00000000004e3e60 R15: 00000000ffffffff kobject: 'batman_adv' (00000000c361b3a2): kobject_uevent_env Showing all locks held in the system: kobject: 'batman_adv' (00000000c361b3a2): kobject_uevent_env: filter function caused the event to drop! 3 locks held by kworker/0:0/5: kobject: 'batman_adv' (00000000c361b3a2): kobject_cleanup, parent (null) #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 000000001561c589 ((linkwatch_work).work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 kobject: 'batman_adv' (00000000c361b3a2): calling ktype release #2: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 kobject: (00000000c361b3a2): dynamic_kobj_release 1 lock held by khungtaskd/1081: kobject: 'batman_adv': free name #0: 00000000a5c099ad (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4438 3 locks held by kworker/0:2/2698: kobject: 'rx-0' (000000009c2bb9c4): kobject_cleanup, parent 00000000b45ab312 #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000e1166a21 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 kobject: 'rx-0' (000000009c2bb9c4): auto cleanup 'remove' event #1: 00000000d7477a9b (deferred_process_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 kobject: 'rx-0' (000000009c2bb9c4): kobject_uevent_env #2: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 kobject: 'rx-0' (000000009c2bb9c4): fill_kobj_path: path = '/devices/virtual/net/veth790/queues/rx-0' 1 lock held by rsyslogd/7717: #0: 000000003e1b3054 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:767 kobject: 'rx-0' (000000009c2bb9c4): auto cleanup kobject_del 2 locks held by getty/7839: #0: 0000000094a8d1b9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'rx-0' (000000009c2bb9c4): calling ktype release #1: 00000000311f7e37 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'rx-0': free name 2 locks held by getty/7840: kobject: 'tx-0' (00000000b25ac956): kobject_cleanup, parent 00000000b45ab312 #0: 00000000ae8c268d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'tx-0' (00000000b25ac956): auto cleanup 'remove' event #1: 0000000035f67cc6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'tx-0' (00000000b25ac956): kobject_uevent_env 2 locks held by getty/7841: kobject: 'tx-0' (00000000b25ac956): fill_kobj_path: path = '/devices/virtual/net/veth790/queues/tx-0' #0: 00000000244b327c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000c6357570 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'tx-0' (00000000b25ac956): auto cleanup kobject_del 2 locks held by getty/7842: kobject: 'tx-0' (00000000b25ac956): calling ktype release #0: 00000000415a975b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000846067b2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'tx-0': free name 2 locks held by getty/7843: #0: 00000000678da093 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'queues' (00000000b45ab312): kobject_cleanup, parent (null) #1: 00000000b9bf7c13 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 kobject: 'queues' (00000000b45ab312): calling ktype release 2 locks held by getty/7844: kobject: 'queues' (00000000b45ab312): kset_release #0: 00000000c3f56ac6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000584fec42 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7845: #0: 0000000006cda1db (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000260a2fad (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 3 locks held by kworker/0:1/4624: #0: 00000000382450db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000382450db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000382450db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000382450db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000382450db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000382450db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000382450db ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 0000000014f743c1 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 10 locks held by kworker/u4:8/19291: 3 locks held by syz-executor.0/4036: #0: 00000000726f6424 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:637 #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:625 #2: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 2 locks held by syz-executor.4/4069: #0: 00000000726f6424 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:637 #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:625 1 lock held by syz-executor.5/4046: #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 2 locks held by syz-executor.2/4085: #0: 00000000726f6424 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:637 kobject: 'queues': free name #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:625 kobject: 'veth790' (00000000e4b46e6e): kobject_uevent_env 1 lock held by syz-executor.2/4089: kobject: 'veth790' (00000000e4b46e6e): fill_kobj_path: path = '/devices/virtual/net/veth790' #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 kobject: 'batman_adv' (000000002dd57970): kobject_uevent_env 1 lock held by syz-executor.2/4092: kobject: 'batman_adv' (000000002dd57970): kobject_uevent_env: filter function caused the event to drop! #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 kobject: 'batman_adv' (000000002dd57970): kobject_cleanup, parent (null) 2 locks held by syz-executor.2/4115: kobject: 'batman_adv' (000000002dd57970): calling ktype release #0: 00000000726f6424 (cb_lock){++++}, at: genl_rcv+0x1a/0x40 net/netlink/genetlink.c:637 kobject: (000000002dd57970): dynamic_kobj_release #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_lock net/netlink/genetlink.c:33 [inline] #1: 00000000d068cc21 (genl_mutex){+.+.}, at: genl_rcv_msg+0x13e/0x170 net/netlink/genetlink.c:625 kobject: 'batman_adv': free name kobject: 'rx-0' (00000000fa3b54c9): kobject_cleanup, parent 000000006a3bdf1b 1 lock held by syz-executor.2/4117: kobject: 'rx-0' (00000000fa3b54c9): auto cleanup 'remove' event #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000007751a858 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4765 kobject: 'rx-0' (00000000fa3b54c9): kobject_uevent_env ============================================= net_ratelimit: 20 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_1 kobject: 'rx-0' (00000000fa3b54c9): kobject_uevent_env: uevent_suppress caused the event to drop! NMI backtrace for cpu 0 CPU: 0 PID: 1081 Comm: khungtaskd Not tainted 4.19.94-syzkaller #0 kobject: 'rx-0' (00000000fa3b54c9): auto cleanup kobject_del 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+0x197/0x210 lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 kobject: 'rx-0' (00000000fa3b54c9): calling ktype release nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 kobject: 'rx-0': free name trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'tx-0' (00000000521a3552): kobject_cleanup, parent 000000006a3bdf1b NMI backtrace for cpu 1 CPU: 1 PID: 19291 Comm: kworker/u4:8 Not tainted 4.19.94-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:io_serial_in+0x6b/0x90 drivers/tty/serial/8250/8250_port.c:450 Code: e1 00 00 00 49 8d 7c 24 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 17 41 03 5c 24 38 89 da ec <5b> 0f b6 c0 41 5c 5d c3 e8 e8 b6 e9 fd eb c2 e8 41 b7 e9 fd eb e2 RSP: 0018:ffff888026237568 EFLAGS: 00000006 RAX: dffffc0000000005 RBX: 00000000000003f9 RCX: 0000000000000000 RDX: 00000000000003f9 RSI: ffffffff83b92601 RDI: ffffffff8b6e91f8 RBP: ffff888026237578 R08: 1ffffffff16dd238 R09: fffffbfff16dd239 R10: fffffbfff16dd238 R11: ffffffff8b6e91c3 R12: ffffffff8b6e91c0 R13: 0000000000000001 R14: ffffffff8b6e9208 R15: ffff888026237668 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000184bf58 CR3: 000000008b7f8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_port_in include/linux/serial_core.h:269 [inline] serial8250_console_write+0x2bb/0x9f0 drivers/tty/serial/8250/8250_port.c:3252 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:590 call_console_drivers kernel/printk/printk.c:1736 [inline] console_unlock+0xbdf/0x10d0 kernel/printk/printk.c:2429 vprintk_emit+0x280/0x6d0 kernel/printk/printk.c:1937 vprintk_default+0x28/0x30 kernel/printk/printk.c:1979 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2012 kobject_cleanup lib/kobject.c:638 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold+0x88/0x2e6 lib/kobject.c:708 netdev_queue_update_kobjects+0x250/0x3d0 net/core/net-sysfs.c:1515 remove_queue_kobjects net/core/net-sysfs.c:1568 [inline] netdev_unregister_kobject+0x162/0x1f0 net/core/net-sysfs.c:1718 rollback_registered_many+0x6bb/0xda0 net/core/dev.c:8224 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9312 unregister_netdevice_many net/core/dev.c:9311 [inline] default_device_exit_batch+0x34e/0x410 net/core/dev.c:9783 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:156 cleanup_net+0x404/0x960 net/core/net_namespace.c:553 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415