IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 INFO: task syz-executor.2:6905 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27736 6905 6774 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007fe70f663c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe70f6646d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.3:6926 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27736 6926 6775 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007f624fdb1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f624fdb26d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.5:6917 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28200 6917 6781 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007f13d8866c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13d88676d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.5:6932 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27736 6932 6781 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007f13d8845c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13d88466d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.4:6923 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D28200 6923 6782 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007f643f991c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f643f9926d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.4:6944 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27736 6944 6782 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007f643f970c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f643f9716d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.1:6924 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28200 6924 6778 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007fda853f9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fda853fa6d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.1:6938 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27736 6938 6778 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007fda853d8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fda853d96d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff INFO: task syz-executor.0:6928 blocked for more than 140 seconds. Not tainted 4.14.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28200 6928 6783 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x786/0x1d30 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6ea/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 af_alg_wait_for_completion+0x1f/0x90 crypto/af_alg.c:493 _aead_recvmsg crypto/algif_aead.c:314 [inline] aead_recvmsg+0x1193/0x2680 crypto/algif_aead.c:335 sock_recvmsg_nosec net/socket.c:819 [inline] sock_recvmsg+0xb9/0xf0 net/socket.c:826 sock_read_iter+0x20b/0x3b0 net/socket.c:903 call_read_iter include/linux/fs.h:1771 [inline] do_iter_readv_writev+0x3c9/0x910 fs/read_write.c:673 do_iter_read+0x1de/0x5a0 fs/read_write.c:917 vfs_readv+0xb6/0x110 fs/read_write.c:981 do_readv+0x10d/0x320 fs/read_write.c:1014 SYSC_readv fs/read_write.c:1101 [inline] SyS_readv+0xb/0x10 fs/read_write.c:1098 do_syscall_64+0x1c9/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x458c29 RSP: 002b:00007fdc675a0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29 RDX: 0000000000000001 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdc675a16d4 R13: 00000000004c5985 R14: 00000000004d9fe0 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1011: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4544 1 lock held by rsyslogd/6539: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x8e/0xc0 fs/file.c:769 2 locks held by getty/6661: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6662: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6663: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6664: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6665: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6666: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 2 locks held by getty/6667: #0: (&tty->ldisc_sem){++++}, at: [] ldsem_down_read+0x2d/0x40 drivers/tty/tty_ldsem.c:376 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1e6/0x18f0 drivers/tty/n_tty.c:2156 1 lock held by syz-executor.2/6905: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.3/6926: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.5/6917: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.5/6932: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.4/6923: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.4/6944: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.1/6924: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.1/6938: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 1 lock held by syz-executor.0/6928: #0: (sk_lock-AF_ALG){+.+.}, at: [] lock_sock include/net/sock.h:1462 [inline] #0: (sk_lock-AF_ALG){+.+.}, at: [] af_alg_wait_for_data+0x1ab/0x420 crypto/af_alg.c:800 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1011 Comm: khungtaskd Not tainted 4.14.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xf7/0x13b lib/dump_stack.c:58 nmi_cpu_backtrace.cold.4+0x3e/0x76 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xe5/0x119 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:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x522/0xb40 kernel/hung_task.c:274 kthread+0x33b/0x410 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6861 Comm: kworker/u4:5 Not tainted 4.14.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888098bf2380 task.stack: ffff888095a98000 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:774 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:796 [inline] RIP: 0010:lock_is_held_type+0x8a/0x210 kernel/locking/lockdep.c:4028 RSP: 0018:ffff888095a9fbc8 EFLAGS: 00000086 RAX: 0000000000000086 RBX: ffff888098bf2380 RCX: 1ffffffff0ed2dad RDX: 1ffffffff0f22d80 RSI: 00000000ffffffff RDI: ffffffff87916c00 RBP: ffff888095a9fbe8 R08: ffff888098bf2c48 R09: 0000000000000008 R10: 0000000000000028 R11: ffff888098bf2380 R12: ffffffff879af720 R13: ffffffff879b0338 R14: ffff888098bf2450 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000130 CR3: 0000000093c64000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:437 [inline] task_css include/linux/cgroup.h:481 [inline] task_ca kernel/sched/cpuacct.c:54 [inline] cpuacct_charge+0x296/0x370 kernel/sched/cpuacct.c:360 update_curr+0x2e1/0x680 kernel/sched/fair.c:856 dequeue_entity+0x1f/0xf30 kernel/sched/fair.c:3805 dequeue_task_fair+0x60/0x4a0 kernel/sched/fair.c:4959 dequeue_task kernel/sched/core.c:774 [inline] deactivate_task+0xf3/0x330 kernel/sched/core.c:790 __schedule+0x8d3/0x1d30 kernel/sched/core.c:3333 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 worker_thread+0x24b/0xee0 kernel/workqueue.c:2269 kthread+0x33b/0x410 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404 Code: 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 6c 01 00 00 48 83 3d 5e 89 4a 06 00 0f 84 2a 01 00 00 9c 58 <0f> 1f 44 00 00 48 c7 c7 10 6c 91 87 48 89 c3 48 b8 00 00 00 00