[ 45.394347] audit: type=1800 audit(1556025032.780:30): pid=7877 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 51.207098] kauditd_printk_skb: 4 callbacks suppressed [ 51.207114] audit: type=1400 audit(1556025038.620:35): avc: denied { map } for pid=8051 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.15.206' (ECDSA) to the list of known hosts. [ 57.950774] audit: type=1400 audit(1556025045.360:36): avc: denied { map } for pid=8063 comm="syz-executor032" path="/root/syz-executor032844510" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 57.978029] IPVS: ftp: loaded support on port[0] = 21 [ 58.045271] chnl_net:caif_netlink_parms(): no params data found [ 58.077674] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.084658] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.091973] device bridge_slave_0 entered promiscuous mode [ 58.099752] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.106684] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.114248] device bridge_slave_1 entered promiscuous mode [ 58.130513] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 58.139138] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 58.155911] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 58.163762] team0: Port device team_slave_0 added [ 58.169411] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 58.176890] team0: Port device team_slave_1 added [ 58.182149] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 58.190069] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 58.244914] device hsr_slave_0 entered promiscuous mode [ 58.313084] device hsr_slave_1 entered promiscuous mode [ 58.353325] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 58.360936] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 58.374745] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.381218] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.388602] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.395130] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.426132] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 58.432249] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.441953] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 58.451540] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.471146] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.479001] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.487291] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 58.497608] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 58.504220] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.513596] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.521591] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.528437] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.539381] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.547914] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.554330] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.569711] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.577657] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.588028] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.598150] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.610319] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.621744] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready executing program [ 58.628996] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.636489] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.648630] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 58.663371] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.675922] ------------[ cut here ]------------ [ 58.680905] hsr_addr_subst_dest: Unknown node [ 58.686315] WARNING: CPU: 0 PID: 8064 at net/hsr/hsr_framereg.c:313 hsr_addr_subst_dest+0x382/0x460 [ 58.696123] Kernel panic - not syncing: panic_on_warn set ... [ 58.696123] [ 58.703496] CPU: 0 PID: 8064 Comm: syz-executor032 Not tainted 4.19.36 #4 [ 58.710887] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.721144] Call Trace: [ 58.724089] dump_stack+0x172/0x1f0 [ 58.727991] panic+0x263/0x51d [ 58.731190] ? __warn_printk+0xf3/0xf3 [ 58.735089] ? hsr_addr_subst_dest+0x382/0x460 [ 58.741093] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.746900] ? __warn.cold+0x5/0x54 [ 58.750769] ? __warn+0xe8/0x1d0 [ 58.754230] ? hsr_addr_subst_dest+0x382/0x460 [ 58.759104] __warn.cold+0x20/0x54 [ 58.762755] ? hsr_addr_subst_dest+0x382/0x460 [ 58.767413] report_bug+0x263/0x2b0 [ 58.771422] do_error_trap+0x204/0x360 [ 58.776747] ? math_error+0x340/0x340 [ 58.780994] ? vprintk_emit+0x1ab/0x690 [ 58.785102] ? error_entry+0x76/0xd0 [ 58.788943] ? trace_hardirqs_off_caller+0x65/0x220 [ 58.793969] ? vprintk_default+0x28/0x30 [ 58.798032] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 58.802967] do_invalid_op+0x1b/0x20 [ 58.806686] invalid_op+0x14/0x20 [ 58.810149] RIP: 0010:hsr_addr_subst_dest+0x382/0x460 [ 58.815453] Code: 89 de e8 41 d0 85 fa 84 db 75 d3 e8 f8 ce 85 fa 48 c7 c6 20 69 fa 87 48 c7 c7 e0 68 fa 87 c6 05 cb 80 50 02 01 e8 0c ab 59 fa <0f> 0b eb b0 e8 d5 ce 85 fa 0f b6 1d b7 80 50 02 31 ff 89 de e8 05 [ 58.834468] RSP: 0018:ffff88809ff57600 EFLAGS: 00010282 [ 58.839842] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 58.847274] RDX: 0000000000000000 RSI: ffffffff8155df26 RDI: ffffed1013feaeb2 [ 58.854709] RBP: ffff88809ff57640 R08: ffff8880a0dea0c0 R09: ffff8880a0dea960 [ 58.861982] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880931579a0 [ 58.869303] R13: 0000000000000000 R14: 000000000b352e9e R15: 0000000000000000 [ 58.876606] ? vprintk_func+0x86/0x189 [ 58.880497] hsr_forward_skb+0x1276/0x1c10 [ 58.884803] hsr_dev_xmit+0x72/0xa0 [ 58.888447] dev_hard_start_xmit+0x1aa/0x980 [ 58.892980] ? check_preemption_disabled+0x48/0x290 [ 58.898013] __dev_queue_xmit+0x2718/0x3020 [ 58.902527] ? __might_fault+0x12b/0x1e0 [ 58.906770] ? netdev_pick_tx+0x300/0x300 [ 58.911019] ? lock_downgrade+0x810/0x810 [ 58.915610] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 58.921242] ? iov_iter_advance+0x261/0xe30 [ 58.925583] dev_queue_xmit+0x18/0x20 [ 58.929501] ? dev_queue_xmit+0x18/0x20 [ 58.933482] pppoe_sendmsg+0x657/0x7e0 [ 58.937529] ? ether_setup+0x2d0/0x2d0 [ 58.941429] ? pppoe_getname+0x120/0x120 [ 58.945498] ? selinux_socket_sendmsg+0x36/0x40 [ 58.950905] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.956771] ? security_socket_sendmsg+0x93/0xc0 [ 58.961534] ? pppoe_getname+0x120/0x120 [ 58.965595] sock_sendmsg+0xdd/0x130 [ 58.969414] ___sys_sendmsg+0x3e2/0x930 [ 58.973392] ? copy_msghdr_from_user+0x430/0x430 [ 58.978273] ? mark_held_locks+0x100/0x100 [ 58.982506] ? reacquire_held_locks+0xb7/0x3e0 [ 58.987481] ? release_sock+0x158/0x1c0 [ 58.991500] ? find_held_lock+0x35/0x130 [ 58.995589] ? release_sock+0x158/0x1c0 [ 58.999618] ? __local_bh_enable_ip+0x15a/0x270 [ 59.004471] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.010042] ? __fget_light+0x1a9/0x230 [ 59.014125] ? __fdget+0x1b/0x20 [ 59.017504] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 59.023060] ? sockfd_lookup_light+0xcb/0x180 [ 59.027584] __sys_sendmmsg+0x1bf/0x4e0 [ 59.031734] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 59.036075] ? __sys_connect+0x12d/0x330 [ 59.040136] ? __ia32_sys_accept+0xb0/0xb0 [ 59.044454] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.049998] ? __do_page_fault+0x484/0xe90 [ 59.054474] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 59.059245] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 59.064012] ? do_syscall_64+0x26/0x610 [ 59.067996] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.073513] ? do_syscall_64+0x26/0x610 [ 59.077493] __x64_sys_sendmmsg+0x9d/0x100 [ 59.081745] do_syscall_64+0x103/0x610 [ 59.085639] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.090878] RIP: 0033:0x441929 [ 59.094076] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.113290] RSP: 002b:00007fff090d0448 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 59.121025] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441929 [ 59.128303] RDX: 0400000000000191 RSI: 000000002000d180 RDI: 0000000000000003 [ 59.135667] RBP: 00000000004a8fd0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 59.143109] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402e70 [ 59.150590] R13: 0000000000402f00 R14: 0000000000000000 R15: 0000000000000000 [ 59.158912] Kernel Offset: disabled [ 59.162624] Rebooting in 86400 seconds..