protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_0 INFO: task syz-executor.1:31227 blocked for more than 140 seconds. kobject: 'phy3580' (000000005de0f9e6): kobject_uevent_env Not tainted 4.19.87-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'phy3580' (000000005de0f9e6): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim3580/ieee80211/phy3580' syz-executor.1 D28216 31227 23173 0x00000004 Call Trace: kobject: 'ieee80211' (000000009131a8b5): kobject_cleanup, parent (null) context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'ieee80211' (000000009131a8b5): calling ktype release kobject: 'ieee80211': free name kobject: 'hwsim3580' (00000000546496f1): kobject_uevent_env kobject: 'hwsim3580' (00000000546496f1): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim3580' 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 kobject: 'hwsim3580' (00000000546496f1): kobject_uevent_env kobject: 'hwsim3580' (00000000546496f1): fill_kobj_path: path = '/devices/virtual/mac80211_hwsim/hwsim3580' kobject: 'hwsim3580' (00000000546496f1): kobject_cleanup, parent (null) call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117 kobject: 'hwsim3580' (00000000546496f1): calling ktype release __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x53/0x90 kernel/locking/rwsem.c:72 kobject: 'hwsim3580': free name register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 kobject: 'phy3580' (000000005de0f9e6): kobject_cleanup, parent (null) kobject: 'phy3580' (000000005de0f9e6): calling ktype release kobject: 'rfkill3582' (000000007115f873): kobject_cleanup, parent (null) raw_init+0x299/0x340 net/can/raw.c:343 kobject: 'rfkill3582' (000000007115f873): calling ktype release can_create+0x288/0x4b0 net/can/af_can.c:184 kobject: 'rfkill3582': free name __sock_create+0x3d8/0x730 net/socket.c:1276 kobject: 'phy3580': free name 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: 0033:0x45a679 Code: Bad RIP value. RSP: 002b:00007fd72954cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001d RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd72954d6d4 R13: 00000000004c9c1c R14: 00000000004e1ed0 R15: 00000000ffffffff INFO: task syz-executor.1:31232 blocked for more than 140 seconds. Not tainted 4.19.87-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28744 31232 23173 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 raw_init+0x299/0x340 net/can/raw.c:343 can_create+0x288/0x4b0 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: 0033:0x45a679 Code: Bad RIP value. RSP: 002b:00007fd72952bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001d RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd72952c6d4 R13: 00000000004c9c1c R14: 00000000004e1ed0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1054: #0: 00000000e8f2457b (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4438 1 lock held by rsyslogd/7543: 2 locks held by getty/7664: #0: 000000001f36cfbe (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000c8694e13 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7665: #0: 00000000f6b9a2d0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 0000000020aa2468 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7666: #0: 00000000fe55a29e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000008c2571ff (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7667: #0: 000000007166a1f9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000005c8fb736 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7668: #0: 00000000937e111b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 0000000031d91dbd (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7669: #0: 00000000644fc488 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 0000000068517b65 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7670: #0: 00000000729011ac (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000da9dcdb1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 5 locks held by kworker/u4:3/8289: #0: 000000002af91586 ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 000000002af91586 ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000002af91586 ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000002af91586 ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000002af91586 ((wq_completion)"%s""netns"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000002af91586 ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000002af91586 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000ff98df50 (net_cleanup_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 000000000d9b539e (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0x960 net/core/net_namespace.c:520 #3: 0000000076937b41 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 #4: 00000000b7db85ac (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #4: 00000000b7db85ac (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x59e/0x7f0 kernel/rcu/tree_exp.h:667 2 locks held by kworker/1:2/21422: #0: 00000000a482d32b ((wq_completion)"rcu_gp"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000a482d32b ((wq_completion)"rcu_gp"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000a482d32b ((wq_completion)"rcu_gp"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000a482d32b ((wq_completion)"rcu_gp"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000a482d32b ((wq_completion)"rcu_gp"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000a482d32b ((wq_completion)"rcu_gp"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000a482d32b ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000333cc61a ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 1 lock held by syz-executor.1/31227: #0: 000000000d9b539e (pernet_ops_rwsem){++++}, at: register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 1 lock held by syz-executor.1/31232: #0: 000000000d9b539e (pernet_ops_rwsem){++++}, at: register_netdevice_notifier+0x7e/0x630 net/core/dev.c:1642 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1054 Comm: khungtaskd Not tainted 4.19.87-syzkaller #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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 21422 Comm: kworker/1:2 Not tainted 4.19.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events cache_reap RIP: 0010:bad_range+0x1b/0x420 mm/page_alloc.c:518 Code: eb b5 e8 68 38 1b 00 e9 79 ff ff ff 0f 1f 00 48 b8 00 00 00 00 00 16 00 00 55 49 ba 00 00 00 00 00 fc ff df 48 89 e5 48 01 f0 <41> 57 49 c7 c7 90 5b f2 88 41 56 48 c1 f8 06 49 c1 ef 03 41 55 45 RSP: 0018:ffff88820d4efb08 EFLAGS: 00000007 RAX: 00000000083d0300 RBX: 000000000020f40c RCX: ffffffff8362315a RDX: 0000000000000004 RSI: ffffea00083d0300 RDI: ffff88821fff8d80 RBP: ffff88820d4efb08 R08: ffff888099d08700 R09: ffffed1043fff261 R10: dffffc0000000000 R11: ffff88821fff9303 R12: 0000000000000003 R13: 0000000000000002 R14: ffffea00083d0300 R15: ffff88821fff8d80 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b9ed9b000 CR3: 00000000a7f06000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __free_one_page mm/page_alloc.c:819 [inline] free_one_page+0x130/0xfb0 mm/page_alloc.c:1195 __free_pages_ok+0x44c/0xd90 mm/page_alloc.c:1279 __free_pages mm/page_alloc.c:4460 [inline] __free_pages+0x85/0xb0 mm/page_alloc.c:4454 kmem_freepages.isra.0+0x436/0x660 mm/slab.c:1459 slab_destroy+0x24/0x60 mm/slab.c:1713 slabs_destroy+0x71/0x90 mm/slab.c:1729 reap_alien mm/slab.c:767 [inline] cache_reap+0x255/0x280 mm/slab.c:4066 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