netlink: 26 bytes leftover after parsing attributes in process `syz-executor.3'. INFO: task syz-executor.5:9012 blocked for more than 140 seconds. Not tainted 5.0.0-rc5+ #65 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29648 9012 7868 0x20020000 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 mon_bin_compat_ioctl+0x186/0x3c0 drivers/usb/mon/mon_bin.c:1170 __do_compat_sys_ioctl fs/compat_ioctl.c:1052 [inline] __se_compat_sys_ioctl fs/compat_ioctl.c:998 [inline] __ia32_compat_sys_ioctl+0x197/0x620 fs/compat_ioctl.c:998 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x281/0xc98 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f8c869 Code: ff 3a 82 53 86 ff ff ff ff 3a 82 53 86 ff ff ff ff 3a 82 53 86 ff ff ff ff 3a 82 53 86 ff ff ff ff 3a 82 53 86 ff ff ff ff 3a <82> 53 86 ff ff ff ff 3a 82 53 86 ff ff ff ff 3a 82 53 86 ff ff ff RSP: 002b:00000000f5d460cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000c00c9207 RDX: 0000000020000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 4 locks held by kworker/u4:3/106: 1 lock held by khungtaskd/1010: #0: 00000000437efdff (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389 1 lock held by rsyslogd/7726: #0: 000000007a76e20b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795 2 locks held by getty/7817: #0: 00000000994c7d82 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009ebaf969 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7818: #0: 00000000ce6d8b6f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000be147785 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7819: #0: 000000006b0e383c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000e3dab3ec (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7820: #0: 0000000099730e36 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000926e21e1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7821: #0: 00000000be17f6b9 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000c399ff0b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7822: #0: 00000000981d7637 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b632f670 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7823: #0: 000000002d16544b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000bab91e90 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 1 lock held by syz-executor.5/8999: #0: 00000000a6e62f82 (&rp->fetch_lock){+.+.}, at: mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 1 lock held by syz-executor.5/9012: #0: 00000000a6e62f82 (&rp->fetch_lock){+.+.}, at: mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 1 lock held by syz-executor.5/9029: #0: 000000001df842a9 (&rp->fetch_lock){+.+.}, at: mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 1 lock held by syz-executor.5/9053: #0: 000000006b82a994 (&rp->fetch_lock){+.+.}, at: mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 1 lock held by syz-executor.5/9072: #0: 00000000962d7133 (&rp->fetch_lock){+.+.}, at: mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 1 lock held by syz-executor.2/9096: #0: 000000007434bfa0 (&rp->fetch_lock){+.+.}, at: mon_bin_fetch+0x37/0x340 drivers/usb/mon/mon_bin.c:909 1 lock held by syz-executor.0/12029: 2 locks held by syz-executor.1/12034: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1010 Comm: khungtaskd Not tainted 5.0.0-rc5+ #65 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+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 106 Comm: kworker/u4:3 Not tainted 5.0.0-rc5+ #65 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:inet_twsk_purge+0x83/0x5f0 net/ipv4/inet_timewait_sock.c:266 Code: 48 8b 45 a0 8b 4d ac 44 8b 65 a8 48 8b 00 48 89 4d b0 48 8d 04 c8 48 89 45 c0 48 c1 e8 03 4c 01 f8 48 89 45 b8 e8 9d a8 99 fb <31> d2 be 0a 01 00 00 48 c7 c7 20 cf 06 88 e8 ca 89 77 fb e8 55 6c RSP: 0018:ffff8880a951fb88 EFLAGS: 00000293 RAX: ffff8880a9bd0540 RBX: 000000000000ffff RCX: 0000000000006887 RDX: 0000000000000000 RSI: ffffffff85d637e3 RDI: 0000000000000004 RBP: ffff8880a951fbf8 R08: ffff8880a9bd0540 R09: 0000000000000004 R10: ffffed1015d25bcf R11: ffff8880ae92de7b R12: 000000000000000a R13: 0000000000000001 R14: 0000000000006887 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc33edecbc CR3: 00000000a089a000 CR4: 00000000001406e0 Call Trace: tcpv6_net_exit_batch+0x1a/0x20 net/ipv6/tcp_ipv6.c:2031 ops_exit_list.isra.0+0x105/0x160 net/core/net_namespace.c:156 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:551 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 worker_thread+0x98/0xe40 kernel/workqueue.c:2319 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352