[ 43.730565] audit: type=1800 audit(1560425148.578:30): pid=7698 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: [ 49.477575] kauditd_printk_skb: 4 callbacks suppressed [ 49.477591] audit: type=1400 audit(1560425154.368:35): avc: denied { map } for pid=7873 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 '10.128.1.5' (ECDSA) to the list of known hosts. [ 56.253145] audit: type=1400 audit(1560425161.138:36): avc: denied { map } for pid=7885 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2019/06/13 11:26:01 parsed 1 programs [ 57.088699] audit: type=1400 audit(1560425161.978:37): avc: denied { map } for pid=7885 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=14990 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2019/06/13 11:26:03 executed programs: 0 [ 58.704586] IPVS: ftp: loaded support on port[0] = 21 [ 58.766026] chnl_net:caif_netlink_parms(): no params data found [ 58.797876] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.804418] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.811732] device bridge_slave_0 entered promiscuous mode [ 58.819045] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.825500] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.832366] device bridge_slave_1 entered promiscuous mode [ 58.848471] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 58.857403] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 58.873640] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 58.882866] team0: Port device team_slave_0 added [ 58.888286] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 58.895773] team0: Port device team_slave_1 added [ 58.900994] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 58.908397] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 58.967772] device hsr_slave_0 entered promiscuous mode [ 59.015366] device hsr_slave_1 entered promiscuous mode [ 59.076532] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 59.083438] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 59.097604] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.103997] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.110891] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.117288] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.149962] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 59.156406] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.164187] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 59.172788] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.192260] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.199700] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.208410] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 59.218605] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 59.224664] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.234141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.242103] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.248493] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.258893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.266609] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.272948] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.287935] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.302599] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 59.313369] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.324221] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 59.332929] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.340599] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.348337] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.355938] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.363330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.375642] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 59.384914] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.395936] audit: type=1400 audit(1560425164.288:38): avc: denied { associate } for pid=7902 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 59.498457] WARNING: CPU: 1 PID: 7915 at kernel/signal.c:2320 get_signal+0x1bf9/0x1fc0 [ 59.506624] Kernel panic - not syncing: panic_on_warn set ... [ 59.506624] [ 59.513975] CPU: 1 PID: 7915 Comm: syz-executor.0 Not tainted 4.19.50 #22 [ 59.520883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.530221] Call Trace: [ 59.532974] dump_stack+0x172/0x1f0 [ 59.536592] panic+0x263/0x507 [ 59.539805] ? __warn_printk+0xf3/0xf3 [ 59.543701] ? get_signal+0x1bf9/0x1fc0 [ 59.547663] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.553187] ? __warn.cold+0x5/0x4a [ 59.556814] ? __warn+0xe8/0x1d0 [ 59.560176] ? get_signal+0x1bf9/0x1fc0 [ 59.564140] __warn.cold+0x20/0x4a [ 59.567669] ? get_signal+0x1bf9/0x1fc0 [ 59.571630] report_bug+0x263/0x2b0 [ 59.575248] do_error_trap+0x204/0x360 [ 59.579120] ? math_error+0x340/0x340 [ 59.582906] ? error_entry+0x76/0xd0 [ 59.586609] ? trace_hardirqs_off_caller+0x65/0x220 [ 59.591611] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 59.596439] do_invalid_op+0x1b/0x20 [ 59.600135] invalid_op+0x14/0x20 [ 59.603571] RIP: 0010:get_signal+0x1bf9/0x1fc0 [ 59.608136] Code: 84 db 0f 84 d5 e5 ff ff e8 f4 f4 27 00 31 ff e8 8d 8b 17 00 e9 c4 e5 ff ff e8 e3 f4 27 00 0f 0b e9 dd fa ff ff e8 d7 f4 27 00 <0f> 0b 41 bd 00 80 00 00 e9 7e f4 ff ff e8 75 58 5e 00 e9 5e e9 ff [ 59.627043] RSP: 0018:ffff88807840fc30 EFLAGS: 00010093 [ 59.632407] RAX: ffff88807ed7a180 RBX: 0000000000000001 RCX: ffffffff81430684 [ 59.639666] RDX: 0000000000000000 RSI: ffffffff81431209 RDI: 0000000000000005 [ 59.646921] RBP: ffff88807840fce8 R08: ffff88807ed7a180 R09: ffffed1015349a42 [ 59.654172] R10: ffffed1015349a41 R11: ffff8880a9a4d20b R12: 0000000000000000 [ 59.661440] R13: 0000000000008000 R14: dffffc0000000000 R15: ffff88807ed7a180 [ 59.668746] ? get_signal+0x1074/0x1fc0 [ 59.672701] ? get_signal+0x1bf9/0x1fc0 [ 59.676673] do_signal+0x95/0x1960 [ 59.680200] ? setup_sigcontext+0x7d0/0x7d0 [ 59.684682] ? finish_task_switch+0x146/0x780 [ 59.689165] ? find_held_lock+0x35/0x130 [ 59.693214] ? calculate_sigpending+0x87/0xa0 [ 59.697714] ? find_held_lock+0x35/0x130 [ 59.701763] ? calculate_sigpending+0x87/0xa0 [ 59.706244] ? finish_task_switch+0x146/0x780 [ 59.710723] ? exit_to_usermode_loop+0x43/0x2c0 [ 59.715375] ? syscall_return_slowpath+0x40a/0x4c0 [ 59.720303] ? exit_to_usermode_loop+0x43/0x2c0 [ 59.724957] ? lockdep_hardirqs_on+0x415/0x5d0 [ 59.729530] ? trace_hardirqs_on+0x67/0x220 [ 59.733853] exit_to_usermode_loop+0x244/0x2c0 [ 59.738425] syscall_return_slowpath+0x40a/0x4c0 [ 59.743166] ret_from_fork+0x15/0x30 [ 59.746884] RIP: 0033:0x4592c9 [ 59.750060] Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.768948] RSP: 002b:00007f255d58bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 59.776640] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004592c9 [ 59.783908] RDX: 9999999999999999 RSI: 0000000000000000 RDI: 000000000a01ffff [ 59.791173] RBP: 000000000075bf20 R08: ffffffffffffffff R09: 0000000000000000 [ 59.798445] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f255d58c6d4 [ 59.805712] R13: 00000000004bf72a R14: 00000000004d0e18 R15: 00000000ffffffff [ 60.929628] Shutting down cpus with NMI [ 60.934751] Kernel Offset: disabled [ 60.938430] Rebooting in 86400 seconds..