SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 sclass=netlink_xfrm_socket pig=9890 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=65535 sclass=netlink_xfrm_socket pig=9894 comm=syz-executor1 INFO: task syz-executor0:9866 blocked for more than 140 seconds. Not tainted 4.9.128+ #41 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28832 9866 2114 0x00000004 ffff8801a5342f80 ffff8801d25f5280 ffff8801c8aaa100 ffff8801ca86c740 ffff8801db621018 ffff8801cc77fcf8 ffffffff8277ee02 0000000000000000 ffff8801a5343830 ffffed0034a68705 00ff8801a5342f80 ffff8801db6218f0 Call Trace: [] schedule+0x7f/0x1b0 kernel/sched/core.c:3553 [] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3586 [] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [] mutex_lock_nested+0x326/0x870 kernel/locking/mutex.c:621 [] evdev_flush+0x72/0x120 drivers/input/evdev.c:350 [] filp_close+0xa7/0x140 fs/open.c:1129 [] __close_fd+0x156/0x230 fs/file.c:651 [] SYSC_close fs/open.c:1148 [inline] [] SyS_close+0x4c/0x90 fs/open.c:1146 [] do_syscall_64+0x19f/0x480 arch/x86/entry/common.c:282 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline] #0: (rcu_read_lock){......}, at: [] watchdog+0x11c/0xa20 kernel/hung_task.c:239 #1: (tasklist_lock){.+.+..}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336 2 locks held by getty/2027: #0: (&tty->ldisc_sem){++++++}, at: [] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367 #1: (&ldata->atomic_read_lock){+.+...}, at: [] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142 1 lock held by syz-executor0/9866: #0: (&evdev->mutex){+.+.+.}, at: [] evdev_flush+0x72/0x120 drivers/input/evdev.c:350 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.128+ #41 ffff8801d9907d08 ffffffff81af2469 0000000000000000 0000000000000000 0000000000000000 0000000000000001 ffffffff810967d0 ffff8801d9907d40 ffffffff81afd1c9 0000000000000000 0000000000000000 0000000000000003 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99 [] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60 [] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [] check_hung_task kernel/hung_task.c:125 [inline] [] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [] watchdog+0x6ad/0xa20 kernel/hung_task.c:239 [] kthread+0x26d/0x300 kernel/kthread.c:211 [] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5768 Comm: syz-executor3 Not tainted 4.9.128+ #41 task: ffff8801cb9c2f80 task.stack: ffff8801a4900000 RIP: 0010:[] c [] __bpf_prog_run+0x2b7d/0x54b0 kernel/bpf/core.c:606 RSP: 0018:ffff8801a4907940 EFLAGS: 00000246 RAX: ffffffff8138062d RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8137db73 RDI: ffffffff8288ce38 RBP: ffff8801a4907ca8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801a4907c80 R13: ffffffff8288c840 R14: ffffc9000daf1038 R15: 00000000000000bf FS: 00007f625c951700(0000) GS:ffff8801db700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000202f4000 CR3: 00000001d2780000 CR4: 00000000001606b0 Stack: ffff8801cb9c3820c 00000000cb9c3878c 1ffff10034920f2cc ffffffff82ecc378c 0000000041b58ab3c ffffffff82c325f8c ffffffff8137dab0c ffffffff82c20fefc ffffffff811f7600c ffffffff811f771ac 0000000000000000c dffffc0000000000c Call Trace: [] seccomp_run_filters kernel/seccomp.c:200 [inline] [] __seccomp_filter+0x14c/0xc80 kernel/seccomp.c:589 [] __secure_computing+0xa6/0x290 kernel/seccomp.c:692 [] syscall_trace_enter+0x550/0xd20 arch/x86/entry/common.c:117 [] do_syscall_64+0x2bc/0x480 arch/x86/entry/common.c:273 [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: ce8 c03 c80 c3c c18 c00 c0f c85 c6c c28 c00 c00 c4b c8b c8c cfc c40 cfd cff cff c48 c89 cf0 c49 c83 cc6 c08 c48 cd3 ce8 c49 c89 c84 cd4 c40 cfd cff cff ce9 c41 cd5 cff cff c c0e c94 cf8 cff c49 c8d c7e c01 c48 c89 cf8 c48 c89 cfa c48 cc1 ce8 c03 c83 ce2 c