sctp: sctp_transport_update_pmtu: Reported pmtu 256 too low, using default minimum of 512 sctp: sctp_transport_update_pmtu: Reported pmtu 256 too low, using default minimum of 512 sctp: sctp_transport_update_pmtu: Reported pmtu 256 too low, using default minimum of 512 INFO: rcu_sched detected stalls on CPUs/tasks: 0-...: (1 GPs behind) idle=3da/140000000000000/0 softirq=150857/150861 fqs=11180 (detected by 1, t=125002 jiffies, g=90776, c=90775, q=1561) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 22862 Comm: syz-executor2 Not tainted 4.14.0-rc3+ #76 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801c67ae3c0 task.stack: ffff8801c6f48000 RIP: 0010:rep_nop arch/x86/include/asm/processor.h:634 [inline] RIP: 0010:delay_tsc+0x41/0x70 arch/x86/lib/delay.c:66 RSP: 0018:ffff8801c6f4efe8 EFLAGS: 00000003 RAX: 000000f1806f8f7b RBX: ffffffff878cc1c0 RCX: 000000f1806f8b4d RDX: 000000000000042e RSI: 0000000000000000 RDI: 00000000000008fd RBP: ffff8801c6f4efe8 R08: ffff8801c6f4ea08 R09: ffff8801c6f4ea00 R10: ffff8801c6f4e978 R11: 1ffff10038cf5f0b R12: 000000000000270f R13: 0000000000000020 R14: fffffbfff0f19880 R15: fffffbfff0f19842 FS: 00007fa54d340700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002061b000 CR3: 00000001d160b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __delay arch/x86/lib/delay.c:160 [inline] __const_udelay+0x5b/0x70 arch/x86/lib/delay.c:174 wait_for_xmitr+0x6f/0x1e0 drivers/tty/serial/8250/8250_port.c:2048 serial8250_console_putchar+0x1f/0x60 drivers/tty/serial/8250/8250_port.c:3174 uart_console_write+0xac/0xe0 drivers/tty/serial/serial_core.c:1872 serial8250_console_write+0x647/0xa20 drivers/tty/serial/8250/8250_port.c:3240 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:597 call_console_drivers kernel/printk/printk.c:1574 [inline] console_unlock+0x812/0xd80 kernel/printk/printk.c:2233 vprintk_emit+0x4ad/0x590 kernel/printk/printk.c:1757 vprintk_default+0x28/0x30 kernel/printk/printk.c:1796 vprintk_func+0x57/0xc0 kernel/printk/printk_safe.c:382 printk+0xaa/0xca kernel/printk/printk.c:1829 nla_parse+0x374/0x3d0 lib/nlattr.c:243 nfnetlink_rcv_msg+0x3d1/0xd60 net/netfilter/nfnetlink.c:195 netlink_rcv_skb+0x216/0x440 net/netlink/af_netlink.c:2408 nfnetlink_rcv+0x1df/0x18e0 net/netfilter/nfnetlink.c:515 netlink_unicast_kernel net/netlink/af_netlink.c:1273 [inline] netlink_unicast+0x4e8/0x6f0 net/netlink/af_netlink.c:1299 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1862 sock_sendmsg_nosec net/socket.c:633 [inline] sock_sendmsg+0xca/0x110 net/socket.c:643 sock_write_iter+0x320/0x5e0 net/socket.c:912 call_write_iter include/linux/fs.h:1770 [inline] new_sync_write fs/read_write.c:468 [inline] __vfs_write+0x68a/0x970 fs/read_write.c:481 vfs_write+0x18f/0x510 fs/read_write.c:543 SYSC_write fs/read_write.c:588 [inline] SyS_write+0xef/0x220 fs/read_write.c:580 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4520a9 RSP: 002b:00007fa54d33fc08 EFLAGS: 00000216 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000007180b0 RCX: 00000000004520a9 RDX: 000000000000001f RSI: 0000000020618000 RDI: 0000000000000006 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000000 R13: 0000000000a6f7ef R14: 00007fa54d3409c0 R15: 0000000000000002 Code: 31 48 c1 e2 20 48 89 d1 48 09 c1 0f ae e8 0f 31 48 c1 e2 20 48 09 d0 48 89 c2 48 29 ca 48 39 fa 73 25 65 ff 0d 01 4b 2d 7b f3 90 <65> ff 05 f8 4a 2d 7b 65 8b 15 49 17 2d 7b 39 f2 74 ce 48 29 c1 device øÿÿÿ left promiscuous mode ÜQ‚`pðsE: port 1(øÿÿÿ) entered disabled state device syz2 left promiscuous mode ifb0: port 1(syz2) entered disabled state device øÿÿÿ left promiscuous mode ip6gre0: port 1(øÿÿÿ) entered disabled state netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 109 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'. PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex SELinux: unrecognized netlink message: protocol=9 nlmsg_type=24 sclass=netlink_audit_socket pig=23173 comm=syz-executor7 netlink: 13 bytes leftover after parsing attributes in process `syz-executor3'. SELinux: unrecognized netlink message: protocol=9 nlmsg_type=24 sclass=netlink_audit_socket pig=23191 comm=syz-executor7 PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. sctp: [Deprecated]: syz-executor3 (pid 23257) Use of int in maxseg socket option. Use struct sctp_assoc_value instead netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 73 bytes leftover after parsing attributes in process `syz-executor7'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=129 sclass=netlink_route_socket pig=23299 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=129 sclass=netlink_route_socket pig=23299 comm=syz-executor7 device syz5 entered promiscuous mode SELinux: unrecognized netlink message: protocol=4 nlmsg_type=25 sclass=netlink_tcpdiag_socket pig=23446 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=25 sclass=netlink_tcpdiag_socket pig=23457 comm=syz-executor5 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=23460 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=23460 comm=syz-executor3 øÿÿÿ: renamed from lo Bearer <> rejected, not supported in standalone mode Bearer <> rejected, not supported in standalone mode ?: renamed from sit0 sctp: [Deprecated]: syz-executor6 (pid 23965) Use of int in maxseg socket option. Use struct sctp_assoc_value instead SELinux: unrecognized netlink message: protocol=9 nlmsg_type=28 sclass=netlink_audit_socket pig=23974 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=64363 sclass=netlink_audit_socket pig=23974 comm=syz-executor0 sctp: [Deprecated]: syz-executor6 (pid 23987) Use of int in maxseg socket option. Use struct sctp_assoc_value instead RDS: rds_bind could not find a transport for 172.20.3.187, load rds_tcp or rds_rdma? RDS: rds_bind could not find a transport for 172.20.3.187, load rds_tcp or rds_rdma? sctp: [Deprecated]: syz-executor2 (pid 24099) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor2 (pid 24113) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead äÂ^óÜÞ: port 1(syz1) entered blocking state äÂ^óÜÞ: port 1(syz1) entered disabled state device syz1 entered promiscuous mode sctp: [Deprecated]: syz-executor3 (pid 24281) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor3 (pid 24281) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead nla_parse: 36 callbacks suppressed netlink: 2 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. syz-executor1: vmalloc: allocation failure: 17179869180 bytes, mode:0x14080c0(GFP_KERNEL|__GFP_ZERO), nodemask=(null) netlink: 2 bytes leftover after parsing attributes in process `syz-executor1'. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route