[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.917855][ T26] audit: type=1800 audit(1571820875.904:25): pid=8584 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.940443][ T26] audit: type=1800 audit(1571820875.914:26): pid=8584 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 54.988465][ T26] audit: type=1800 audit(1571820875.914:27): pid=8584 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 '10.128.1.28' (ECDSA) to the list of known hosts. syzkaller login: [ 62.563540][ T8738] IPVS: ftp: loaded support on port[0] = 21 [ 62.624227][ T8738] chnl_net:caif_netlink_parms(): no params data found [ 62.649643][ T8738] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.657673][ T8738] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.665566][ T8738] device bridge_slave_0 entered promiscuous mode [ 62.673598][ T8738] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.680667][ T8738] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.688488][ T8738] device bridge_slave_1 entered promiscuous mode [ 62.706424][ T8738] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.716952][ T8738] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.735947][ T8738] team0: Port device team_slave_0 added [ 62.742802][ T8738] team0: Port device team_slave_1 added [ 62.813316][ T8738] device hsr_slave_0 entered promiscuous mode [ 62.851668][ T8738] device hsr_slave_1 entered promiscuous mode [ 62.908371][ T8738] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.915555][ T8738] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.923384][ T8738] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.930448][ T8738] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.964202][ T8738] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.974948][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.985627][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.993953][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.002373][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 63.013588][ T8738] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.024422][ T3778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.032870][ T3778] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.039938][ T3778] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.061887][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.070717][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.077838][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.085875][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.094885][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.103706][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.113980][ T8740] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.123530][ T3778] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.134451][ T8738] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.152413][ T8738] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program [ 63.243865][ T8742] ------------[ cut here ]------------ [ 63.249441][ T8742] WARNING: CPU: 0 PID: 8742 at include/net/sock.h:666 smc_unhash_sk+0x1ea/0x260 [ 63.258472][ T8742] Kernel panic - not syncing: panic_on_warn set ... [ 63.265042][ T8742] CPU: 0 PID: 8742 Comm: syz-executor563 Not tainted 5.4.0-rc4+ #0 [ 63.272926][ T8742] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.282977][ T8742] Call Trace: [ 63.286311][ T8742] dump_stack+0x172/0x1f0 [ 63.290624][ T8742] ? smc_unhash_sk+0x170/0x260 [ 63.295369][ T8742] panic+0x2e3/0x75c [ 63.299241][ T8742] ? add_taint.cold+0x16/0x16 [ 63.303903][ T8742] ? printk+0xba/0xed [ 63.307898][ T8742] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 63.313336][ T8742] ? __warn.cold+0x14/0x35 [ 63.317728][ T8742] ? __warn+0xd9/0x1d0 [ 63.321788][ T8742] ? smc_unhash_sk+0x1ea/0x260 [ 63.326537][ T8742] __warn.cold+0x2f/0x35 [ 63.330766][ T8742] ? report_bug.cold+0x63/0xad [ 63.335512][ T8742] ? smc_unhash_sk+0x1ea/0x260 [ 63.340258][ T8742] report_bug+0x289/0x300 [ 63.344580][ T8742] do_error_trap+0x11b/0x200 [ 63.349161][ T8742] do_invalid_op+0x37/0x50 [ 63.353557][ T8742] ? smc_unhash_sk+0x1ea/0x260 [ 63.358313][ T8742] invalid_op+0x23/0x30 [ 63.362458][ T8742] RIP: 0010:smc_unhash_sk+0x1ea/0x260 [ 63.367807][ T8742] 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 [ 63.387417][ T8742] RSP: 0018:ffff888095dcfcf0 EFLAGS: 00010293 [ 63.393483][ T8742] RAX: ffff8880981da6c0 RBX: ffff888099359240 RCX: ffffffff8715b9fe [ 63.401447][ T8742] RDX: 0000000000000000 RSI: ffffffff8715ba7a RDI: 0000000000000005 [ 63.409411][ T8742] RBP: ffff888095dcfd20 R08: ffff8880981da6c0 R09: ffffed101326b259 [ 63.417363][ T8742] R10: ffffed101326b258 R11: ffff8880993592c3 R12: ffff8880993592c0 [ 63.425319][ T8742] R13: ffffffff89bad640 R14: ffff888099359268 R15: 0000000000000001 [ 63.433286][ T8742] ? smc_unhash_sk+0x16e/0x260 [ 63.438034][ T8742] ? smc_unhash_sk+0x1ea/0x260 [ 63.442780][ T8742] __smc_release+0x202/0x450 [ 63.447354][ T8742] smc_release+0x10c/0x380 [ 63.451776][ T8742] __sock_release+0xce/0x280 [ 63.456360][ T8742] sock_close+0x1e/0x30 [ 63.460496][ T8742] __fput+0x2ff/0x890 [ 63.464463][ T8742] ? __sock_release+0x280/0x280 [ 63.469296][ T8742] ____fput+0x16/0x20 [ 63.473276][ T8742] task_work_run+0x145/0x1c0 [ 63.477852][ T8742] exit_to_usermode_loop+0x316/0x380 [ 63.483117][ T8742] do_fast_syscall_32+0xb87/0xdb3 [ 63.488122][ T8742] entry_SYSENTER_compat+0x70/0x7f [ 63.493209][ T8742] RIP: 0023:0xf7f2ba29 [ 63.497268][ T8742] 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 [ 63.516847][ T8742] RSP: 002b:000000000820fd0c EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 63.525235][ T8742] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000006 [ 63.533184][ T8742] RDX: 0000000000000004 RSI: 00000000080c4cf1 RDI: 000000000820fd90 [ 63.541131][ T8742] RBP: 00000000080c4ade R08: 0000000000000000 R09: 0000000000000000 [ 63.549080][ T8742] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 63.557124][ T8742] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 63.566749][ T8742] Kernel Offset: disabled [ 63.571163][ T8742] Rebooting in 86400 seconds..