[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.497043][ T26] audit: type=1800 audit(1571818235.678:25): pid=8448 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.537599][ T26] audit: type=1800 audit(1571818235.688:26): pid=8448 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.572594][ T26] audit: type=1800 audit(1571818235.688:27): pid=8448 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.215' (ECDSA) to the list of known hosts. syzkaller login: [ 67.430602][ T8602] IPVS: ftp: loaded support on port[0] = 21 [ 67.492650][ T8602] chnl_net:caif_netlink_parms(): no params data found [ 67.520377][ T8602] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.527716][ T8602] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.535692][ T8602] device bridge_slave_0 entered promiscuous mode [ 67.544553][ T8602] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.551941][ T8602] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.560764][ T8602] device bridge_slave_1 entered promiscuous mode [ 67.576528][ T8602] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.587740][ T8602] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.605905][ T8602] team0: Port device team_slave_0 added [ 67.613351][ T8602] team0: Port device team_slave_1 added [ 67.670411][ T8602] device hsr_slave_0 entered promiscuous mode [ 67.737927][ T8602] device hsr_slave_1 entered promiscuous mode [ 67.825521][ T8602] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.832902][ T8602] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.841076][ T8602] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.848322][ T8602] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.883228][ T8602] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.894533][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.914910][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.923684][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.932801][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.944674][ T8602] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.955737][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.964445][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.971719][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.983665][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.992546][ T3009] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.999682][ T3009] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.018736][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.027199][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.036334][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.048988][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.060276][ T8602] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.073811][ T8602] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.082496][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.100018][ T8602] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 68.191129][ T8607] ------------[ cut here ]------------ [ 68.196890][ T8607] WARNING: CPU: 1 PID: 8607 at include/net/sock.h:666 smc_unhash_sk+0x1ea/0x260 [ 68.205907][ T8607] Kernel panic - not syncing: panic_on_warn set ... [ 68.212615][ T8607] CPU: 1 PID: 8607 Comm: syz-executor916 Not tainted 5.4.0-rc4+ #0 [ 68.220496][ T8607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.230532][ T8607] Call Trace: [ 68.233833][ T8607] dump_stack+0x172/0x1f0 [ 68.238286][ T8607] ? smc_unhash_sk+0x170/0x260 [ 68.243049][ T8607] panic+0x2e3/0x75c [ 68.247078][ T8607] ? add_taint.cold+0x16/0x16 [ 68.251758][ T8607] ? printk+0xba/0xed [ 68.255726][ T8607] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 68.261169][ T8607] ? __warn.cold+0x14/0x35 [ 68.265565][ T8607] ? __warn+0xd9/0x1d0 [ 68.271247][ T8607] ? smc_unhash_sk+0x1ea/0x260 [ 68.276007][ T8607] __warn.cold+0x2f/0x35 [ 68.280244][ T8607] ? report_bug.cold+0x63/0xad [ 68.284987][ T8607] ? smc_unhash_sk+0x1ea/0x260 [ 68.289741][ T8607] report_bug+0x289/0x300 [ 68.294052][ T8607] do_error_trap+0x11b/0x200 [ 68.298636][ T8607] do_invalid_op+0x37/0x50 [ 68.303045][ T8607] ? smc_unhash_sk+0x1ea/0x260 [ 68.307803][ T8607] invalid_op+0x23/0x30 [ 68.311946][ T8607] RIP: 0010:smc_unhash_sk+0x1ea/0x260 [ 68.317648][ T8607] Code: ff ff ff ff e8 77 3c 8b fe e8 e2 5a 5d fa 4c 89 ef e8 aa 82 38 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c6 5a 5d fa <0f> 0b eb 86 4c 89 e7 e8 5a b9 98 fa e9 5f ff ff ff e8 70 b9 98 fa [ 68.337248][ T8607] RSP: 0018:ffff88809a3d7d00 EFLAGS: 00010293 [ 68.343311][ T8607] RAX: ffff88809448a140 RBX: ffff8880a384f240 RCX: ffffffff8715b9fe [ 68.351341][ T8607] RDX: 0000000000000000 RSI: ffffffff8715ba7a RDI: 0000000000000005 [ 68.359663][ T8607] RBP: ffff88809a3d7d30 R08: ffff88809448a140 R09: ffffed1014709e59 [ 68.367791][ T8607] R10: ffffed1014709e58 R11: ffff8880a384f2c3 R12: ffff8880a384f2c0 [ 68.375751][ T8607] R13: ffffffff89bad640 R14: ffff8880a384f268 R15: 0000000000000001 [ 68.383727][ T8607] ? smc_unhash_sk+0x16e/0x260 [ 68.388474][ T8607] ? smc_unhash_sk+0x1ea/0x260 [ 68.393254][ T8607] __smc_release+0x202/0x450 [ 68.397858][ T8607] smc_release+0x10c/0x380 [ 68.402298][ T8607] __sock_release+0xce/0x280 [ 68.406986][ T8607] sock_close+0x1e/0x30 [ 68.411141][ T8607] __fput+0x2ff/0x890 [ 68.415106][ T8607] ? __sock_release+0x280/0x280 [ 68.419938][ T8607] ____fput+0x16/0x20 [ 68.423898][ T8607] task_work_run+0x145/0x1c0 [ 68.428489][ T8607] exit_to_usermode_loop+0x316/0x380 [ 68.433757][ T8607] do_syscall_64+0x65f/0x760 [ 68.438330][ T8607] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.444213][ T8607] RIP: 0033:0x402fb0 [ 68.448092][ T8607] Code: 01 f0 ff ff 0f 83 40 0d 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d dd 2f 3f 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 14 0d 00 00 c3 48 83 ec 08 e8 7a 02 00 00 [ 68.467707][ T8607] RSP: 002b:00000000007efcf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 68.476102][ T8607] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000402fb0 [ 68.484118][ T8607] RDX: 0000000000000017 RSI: 0000000000000006 RDI: 0000000000000003 [ 68.492086][ T8607] RBP: 0000000000000000 R08: 0000000000000004 R09: 00000000004aac75 [ 68.500042][ T8607] R10: 0000000020000240 R11: 0000000000000246 R12: 0000000000000000 [ 68.508000][ T8607] R13: 00000000004041e0 R14: 0000000000000000 R15: 0000000000000000 [ 68.517606][ T8607] Kernel Offset: disabled [ 68.522008][ T8607] Rebooting in 86400 seconds..