[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 61.818398][ T27] kauditd_printk_skb: 7 callbacks suppressed [ 61.818408][ T27] audit: type=1800 audit(1566270328.783:29): pid=9637 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 61.852339][ T27] audit: type=1800 audit(1566270328.783:30): pid=9637 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts. 2019/08/20 03:12:32 parsed 1 programs 2019/08/20 03:12:35 executed programs: 0 syzkaller login: [ 488.300195][ T9805] IPVS: ftp: loaded support on port[0] = 21 [ 488.346084][ T9805] chnl_net:caif_netlink_parms(): no params data found [ 488.368930][ T9805] bridge0: port 1(bridge_slave_0) entered blocking state [ 488.376032][ T9805] bridge0: port 1(bridge_slave_0) entered disabled state [ 488.383621][ T9805] device bridge_slave_0 entered promiscuous mode [ 488.390810][ T9805] bridge0: port 2(bridge_slave_1) entered blocking state [ 488.398107][ T9805] bridge0: port 2(bridge_slave_1) entered disabled state [ 488.405519][ T9805] device bridge_slave_1 entered promiscuous mode [ 488.419597][ T9805] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 488.429636][ T9805] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 488.445343][ T9805] team0: Port device team_slave_0 added [ 488.452509][ T9805] team0: Port device team_slave_1 added [ 488.508637][ T9805] device hsr_slave_0 entered promiscuous mode [ 488.547355][ T9805] device hsr_slave_1 entered promiscuous mode [ 488.592121][ T9805] bridge0: port 2(bridge_slave_1) entered blocking state [ 488.599221][ T9805] bridge0: port 2(bridge_slave_1) entered forwarding state [ 488.606468][ T9805] bridge0: port 1(bridge_slave_0) entered blocking state [ 488.613536][ T9805] bridge0: port 1(bridge_slave_0) entered forwarding state [ 488.637714][ T9805] 8021q: adding VLAN 0 to HW filter on device bond0 [ 488.647755][ T9807] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 488.665825][ T9807] bridge0: port 1(bridge_slave_0) entered disabled state [ 488.674795][ T9807] bridge0: port 2(bridge_slave_1) entered disabled state [ 488.682677][ T9807] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 488.692128][ T9805] 8021q: adding VLAN 0 to HW filter on device team0 [ 488.701079][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 488.709466][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 488.716492][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 488.728137][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 488.736400][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 488.743451][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 488.754286][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 488.762707][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 488.772334][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 488.782507][ T3024] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 488.792439][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 488.801751][ T9805] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 488.815149][ T9805] 8021q: adding VLAN 0 to HW filter on device batadv0 2019/08/20 03:12:40 executed programs: 249 2019/08/20 03:12:45 executed programs: 535 2019/08/20 03:12:50 executed programs: 818 2019/08/20 03:12:55 executed programs: 1102 2019/08/20 03:13:00 executed programs: 1387 [ 517.594864][T15777] ------------[ cut here ]------------ [ 517.600912][T15777] WARNING: CPU: 0 PID: 15777 at include/net/sock.h:666 smc_unhash_sk.cold+0x11/0x18 [ 517.610267][T15777] Kernel panic - not syncing: panic_on_warn set ... [ 517.616829][T15777] CPU: 0 PID: 15777 Comm: syz-executor.0 Not tainted 5.3.0-rc5+ #110 [ 517.624861][T15777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 517.634896][T15777] Call Trace: [ 517.638240][T15777] dump_stack+0x172/0x1f0 [ 517.642593][T15777] ? smc_listen_work+0x1580/0x15a3 [ 517.647682][T15777] panic+0x2dc/0x755 [ 517.651552][T15777] ? add_taint.cold+0x16/0x16 [ 517.656207][T15777] ? __kasan_check_write+0x14/0x20 [ 517.661294][T15777] ? __warn.cold+0x5/0x4c [ 517.665600][T15777] ? __warn+0xe7/0x1e0 [ 517.669654][T15777] ? smc_unhash_sk.cold+0x11/0x18 [ 517.674659][T15777] __warn.cold+0x20/0x4c [ 517.678895][T15777] ? wake_up_klogd+0x99/0xd0 [ 517.683463][T15777] ? smc_unhash_sk.cold+0x11/0x18 [ 517.688466][T15777] report_bug+0x263/0x2b0 [ 517.692774][T15777] do_error_trap+0x11b/0x200 [ 517.697350][T15777] do_invalid_op+0x37/0x50 [ 517.701749][T15777] ? smc_unhash_sk.cold+0x11/0x18 [ 517.706796][T15777] invalid_op+0x23/0x30 [ 517.710931][T15777] RIP: 0010:smc_unhash_sk.cold+0x11/0x18 [ 517.716547][T15777] Code: 89 ff e8 ef 6b a6 fa e9 d7 f8 ff ff 4c 89 ff e8 e2 6b a6 fa e9 57 fa ff ff e8 08 59 6c fa 48 c7 c7 20 38 42 88 e8 d0 f9 55 fa <0f> 0b e9 ad 43 ff ff e8 f0 58 6c fa 48 c7 c7 20 38 42 88 e8 b8 f9 [ 517.736128][T15777] RSP: 0018:ffff888090777ac0 EFLAGS: 00010286 [ 517.742171][T15777] RAX: 0000000000000024 RBX: ffff88808bf32200 RCX: 0000000000000000 [ 517.750202][T15777] RDX: 0000000000000000 RSI: ffffffff815c2456 RDI: ffffed10120eef4a [ 517.758147][T15777] RBP: ffff888090777af0 R08: 0000000000000024 R09: ffffed1015d060d1 [ 517.766109][T15777] R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: ffff88808bf32280 [ 517.774069][T15777] R13: ffffffff8999dec0 R14: ffff88808bf32228 R15: 0000000000000001 [ 517.782055][T15777] ? vprintk_func+0x86/0x189 [ 517.786624][T15777] __smc_release+0x202/0x450 [ 517.791189][T15777] smc_release+0x10c/0x380 [ 517.795658][T15777] __sock_release+0xce/0x280 [ 517.800224][T15777] sock_close+0x1e/0x30 [ 517.804363][T15777] __fput+0x2ff/0x890 [ 517.808328][T15777] ? __sock_release+0x280/0x280 [ 517.813160][T15777] ____fput+0x16/0x20 [ 517.817238][T15777] task_work_run+0x145/0x1c0 [ 517.821815][T15777] get_signal+0x2078/0x2500 [ 517.826410][T15777] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 517.832629][T15777] ? debug_smp_processor_id+0x3c/0x214 [ 517.838063][T15777] ? kick_process+0xef/0x180 [ 517.842720][T15777] do_signal+0x87/0x1700 [ 517.846939][T15777] ? fput+0x1b/0x20 [ 517.850735][T15777] ? __sys_connect+0x12d/0x330 [ 517.855473][T15777] ? setup_sigcontext+0x7d0/0x7d0 [ 517.860470][T15777] ? put_old_timespec32+0x113/0x200 [ 517.865651][T15777] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 517.871869][T15777] ? trace_hardirqs_on+0x67/0x240 [ 517.876879][T15777] exit_to_usermode_loop+0x286/0x380 [ 517.882139][T15777] do_fast_syscall_32+0xb87/0xdb3 [ 517.887142][T15777] entry_SYSENTER_compat+0x70/0x7f [ 517.892226][T15777] RIP: 0023:0xf7ff9a29 [ 517.896270][T15777] Code: b8 80 96 98 00 eb cc 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 517.915850][T15777] RSP: 002b:00000000f7ff50cc EFLAGS: 00000296 ORIG_RAX: 000000000000016a [ 517.924236][T15777] RAX: ffffffffffffff8d RBX: 0000000000000003 RCX: 0000000020000080 [ 517.932180][T15777] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 [ 517.940147][T15777] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 517.948095][T15777] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 517.956041][T15777] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 517.965240][T15777] Kernel Offset: disabled [ 517.969563][T15777] Rebooting in 86400 seconds..