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 protocol 88fb is buggy, dev hsr_slave_1 INFO: task syz-executor.2:32593 blocked for more than 140 seconds. Not tainted 4.19.84 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'wlan790' (00000000c8d93654): kobject_cleanup, parent (null) syz-executor.2 D27152 32593 32286 0x00000004 Call Trace: kobject: 'wlan790' (00000000c8d93654): calling ktype release context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'wlan790': free name kobject: 'rfkill1128' (000000002d497c75): kobject_uevent_env kobject: 'rfkill1128' (000000002d497c75): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim1122/ieee80211/phy1121/rfkill1128' 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 schedule+0x92/0x1c0 kernel/sched/core.c:3559 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 bcm_init+0x1a8/0x220 net/can/bcm.c:1502 can_create+0x288/0x4a0 net/can/af_can.c:184 __sock_create+0x3d8/0x730 net/socket.c:1276 sock_create net/socket.c:1316 [inline] __sys_socket+0x103/0x220 net/socket.c:1346 __do_sys_socket net/socket.c:1355 [inline] __se_sys_socket net/socket.c:1353 [inline] __x64_sys_socket+0x73/0xb0 net/socket.c:1353 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: Bad RIP value. RSP: 002b:00007f37fd72bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000000000002 RSI: 0000000000000002 RDI: 000000000000001d RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f37fd72c6d4 R13: 00000000004c9987 R14: 00000000004e1328 R15: 00000000ffffffff INFO: task syz-executor.2:32642 blocked for more than 140 seconds. Not tainted 4.19.84 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28008 32642 32286 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 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 bcm_init+0x1a8/0x220 net/can/bcm.c:1502 can_create+0x288/0x4a0 net/can/af_can.c:184 __sock_create+0x3d8/0x730 net/socket.c:1276 sock_create net/socket.c:1316 [inline] __sys_socket+0x103/0x220 net/socket.c:1346 __do_sys_socket net/socket.c:1355 [inline] __se_sys_socket net/socket.c:1353 [inline] __x64_sys_socket+0x73/0xb0 net/socket.c:1353 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a639 Code: 5e 30 f3 0f 6f 66 40 f3 0f 6f 6e 50 f3 0f 6f 76 60 f3 0f 6f 7e 70 f3 44 0f 6f 44 1e 80 f3 44 0f 6f 4c 1e 90 f3 44 0f 6f 54 1e f3 44 0f 6f 5c 1e b0 f3 44 0f 6f 64 1e c0 f3 44 0f 6f 6c 1e d0 RSP: 002b:00007f37fd6e9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a639 RDX: 0000000000000002 RSI: 0000000000000002 RDI: 000000000000001d RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f37fd6ea6d4 R13: 00000000004c9987 R14: 00000000004e1328 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1040: kobject: 'phy1121' (000000009366fe87): kobject_uevent_env #0: 0000000028a1952e (rcu_read_lock){....} kobject: 'phy1121' (000000009366fe87): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim1122/ieee80211/phy1121' kobject: 'ieee80211' (00000000b9df2c46): kobject_cleanup, parent (null) , at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4438 2 locks held by rs:main Q:Reg/7414: kobject: 'ieee80211' (00000000b9df2c46): calling ktype release 1 lock held by rsyslogd/7416: kobject: 'ieee80211': free name 2 locks held by getty/7539: #0: 000000006f93b1e6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 0000000092425762 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 kobject: 'hwsim1122' (00000000183a81de): kobject_uevent_env 2 locks held by getty/7540: kobject: 'hwsim1122' (00000000183a81de): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim1122' #0: 00000000abdc3f94 ( kobject: 'hwsim1122' (00000000183a81de): kobject_uevent_env kobject: 'hwsim1122' (00000000183a81de): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim1122' &tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: kobject: 'hwsim1122' (00000000183a81de): kobject_cleanup, parent (null) 00000000daf2f404 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 kobject: 'hwsim1122' (00000000183a81de): calling ktype release 2 locks held by getty/7541: #0: 00000000da6b7ff3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'hwsim1122': free name #1: 00000000fe5aedf8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 kobject: 'phy1121' (000000009366fe87): kobject_cleanup, parent (null) 2 locks held by getty/7542: kobject: 'phy1121' (000000009366fe87): calling ktype release #0: 000000005c34405b (&tty->ldisc_sem kobject: 'rfkill1128' (000000002d497c75): kobject_cleanup, parent (null) kobject: 'rfkill1128' (000000002d497c75): calling ktype release ){++++} kobject: 'rfkill1128': free name kobject: 'phy1121': free name , at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000006356f973 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7543: #0: 000000008e023744 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000007356d86c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7544: #0: 000000003373c928 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000009210b845 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7545: #0: 00000000b93db873 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 0000000045f6cf1c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 3 locks held by kworker/u4:10/13040: #0: 00000000d3a82e85 ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000d3a82e85 ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000d3a82e85 ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000d3a82e85 ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000d3a82e85 ((wq_completion)"%s""netns"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000d3a82e85 ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000d3a82e85 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000425844be (net_cleanup_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 0000000061fcb2af (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0x970 net/core/net_namespace.c:520 1 lock held by syz-executor.2/32593: #0: 0000000061fcb2af (pernet_ops_rwsem){++++}, at: register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 1 lock held by syz-executor.2/32642: #0: 0000000061fcb2af (pernet_ops_rwsem){++++}, at: register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1040 Comm: khungtaskd Not tainted 4.19.84 #0 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 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 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 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60