[ 44.983276] audit: type=1800 audit(1546638255.757:29): pid=8086 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.021656] audit: type=1800 audit(1546638255.757:30): pid=8086 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=2457 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 Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. syzkaller login: [ 54.199525] kauditd_printk_skb: 5 callbacks suppressed [ 54.199540] audit: type=1400 audit(1546638264.977:36): avc: denied { map } for pid=8272 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 2019/01/04 21:44:25 parsed 1 programs [ 54.906516] audit: type=1400 audit(1546638265.677:37): avc: denied { map } for pid=8272 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=65 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 56.316660] ld (8282) used greatest stack depth: 20008 bytes left 2019/01/04 21:44:27 executed programs: 0 [ 56.488901] IPVS: ftp: loaded support on port[0] = 21 [ 56.561428] chnl_net:caif_netlink_parms(): no params data found [ 56.593520] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.600270] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.607215] device bridge_slave_0 entered promiscuous mode [ 56.614514] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.620968] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.627823] device bridge_slave_1 entered promiscuous mode [ 56.643913] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 56.653135] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 56.670546] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 56.678157] team0: Port device team_slave_0 added [ 56.683751] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 56.690857] team0: Port device team_slave_1 added [ 56.696028] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.703401] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.770889] device hsr_slave_0 entered promiscuous mode [ 56.819223] device hsr_slave_1 entered promiscuous mode [ 56.889046] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 56.895869] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 56.909876] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.916253] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.923139] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.929517] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.963172] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 56.969473] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.977290] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 56.986220] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.005376] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.013063] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.021408] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 57.031840] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 57.037887] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.046711] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.054712] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.061121] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.081358] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.090225] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.096568] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.104278] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.111998] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.119764] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.127681] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.137032] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.146587] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 57.152676] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.167925] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 57.178094] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.187924] audit: type=1400 audit(1546638267.957:38): avc: denied { associate } for pid=8285 comm="syz-executor0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 57.303999] kasan: CONFIG_KASAN_INLINE enabled [ 57.308778] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 57.316158] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 57.322380] CPU: 1 PID: 8303 Comm: syz-executor0 Not tainted 4.20.0+ #9 [ 57.329116] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.338473] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 [ 57.343999] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 [ 57.362899] RSP: 0018:ffff888093c17120 EFLAGS: 00010203 [ 57.368258] RAX: dffffc0000000000 RBX: ffff8880988b2080 RCX: 0000000000000000 [ 57.375508] RDX: 0000000000000001 RSI: ffffffff87b6b452 RDI: 000000000000000e [ 57.382759] RBP: ffff888093c173e8 R08: ffff88807f008280 R09: ffff888097961018 [ 57.390019] R10: ffffed1012f2c1f8 R11: ffff888097960fc7 R12: ffff888081a50760 [ 57.397279] R13: ffff888097960fc8 R14: ffff8880988b24e0 R15: 0000000000000000 [ 57.404537] FS: 00007f1b76ff6700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 57.412746] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.418634] CR2: 00000000004dac90 CR3: 000000008be87000 CR4: 00000000001406e0 [ 57.425910] Call Trace: [ 57.428488] ? __kmalloc_node_track_caller+0x4e/0x70 [ 57.433595] ? __alloc_skb+0x185/0x730 [ 57.437481] ? smc_diag_handler_dump+0x350/0x350 [ 57.442230] ? sock_sendmsg+0xdd/0x130 [ 57.446109] ? ___sys_sendmsg+0x7ec/0x910 [ 57.450250] ? __sys_sendmsg+0x112/0x270 [ 57.454297] ? __sys_sendmsg+0x230/0x270 [ 57.458363] ? do_syscall_64+0x1a3/0x800 [ 57.462419] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.467959] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.473488] ? check_preemption_disabled+0x48/0x290 [ 57.478499] ? __lock_is_held+0xb6/0x140 [ 57.482555] ? __kmalloc_node_track_caller+0x3d/0x70 [ 57.487651] ? lock_acquire+0x1db/0x570 [ 57.491631] ? smc_diag_dump_proto.isra.0+0xfb/0x3c0 [ 57.496750] ? lock_release+0xc40/0xc40 [ 57.500727] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.506253] ? kasan_check_write+0x14/0x20 [ 57.510477] smc_diag_dump_proto.isra.0+0x2e7/0x3c0 [ 57.515486] ? __smc_diag_dump.isra.0+0x2ba0/0x2ba0 [ 57.520490] ? find_held_lock+0x35/0x120 [ 57.524553] smc_diag_dump+0x27/0x80 [ 57.528432] netlink_dump+0x5f2/0x1070 [ 57.532796] ? netlink_broadcast+0x50/0x50 [ 57.537043] __netlink_dump_start+0x5b4/0x7e0 [ 57.541532] smc_diag_handler_dump+0x2a7/0x350 [ 57.546103] ? smc_gid_be16_convert+0x2c0/0x2c0 [ 57.550771] ? lock_downgrade+0x910/0x910 [ 57.554914] ? smc_diag_dump_proto.isra.0+0x3c0/0x3c0 [ 57.560098] ? rcu_read_unlock_special+0x380/0x380 [ 57.565036] sock_diag_rcv_msg+0x322/0x410 [ 57.569264] netlink_rcv_skb+0x17d/0x410 [ 57.573321] ? sock_diag_bind+0x80/0x80 [ 57.577303] ? netlink_ack+0xba0/0xba0 [ 57.581217] sock_diag_rcv+0x2b/0x40 [ 57.584927] netlink_unicast+0x574/0x770 [ 57.588986] ? netlink_attachskb+0x980/0x980 [ 57.593386] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.598915] netlink_sendmsg+0xa05/0xf90 [ 57.602987] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.608518] ? netlink_unicast+0x770/0x770 [ 57.612747] ? selinux_socket_sendmsg+0x36/0x40 [ 57.617406] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.622939] ? security_socket_sendmsg+0x93/0xc0 [ 57.627689] ? netlink_unicast+0x770/0x770 [ 57.631918] sock_sendmsg+0xdd/0x130 [ 57.635636] ___sys_sendmsg+0x7ec/0x910 [ 57.639625] ? copy_msghdr_from_user+0x570/0x570 [ 57.644371] ? iterate_fd+0x4b0/0x4b0 [ 57.648165] ? __might_fault+0x12b/0x1e0 [ 57.652219] ? find_held_lock+0x35/0x120 [ 57.656273] ? __might_fault+0x12b/0x1e0 [ 57.660332] ? __fget_light+0x2db/0x420 [ 57.664298] ? fget_raw+0x20/0x20 [ 57.667741] ? lock_release+0xc40/0xc40 [ 57.671705] ? trace_hardirqs_off_caller+0x300/0x300 [ 57.676798] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.682328] ? __fdget+0x1b/0x20 [ 57.685686] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.691214] ? sockfd_lookup_light+0xc2/0x160 [ 57.695705] __sys_sendmsg+0x112/0x270 [ 57.699587] ? __ia32_sys_shutdown+0x80/0x80 [ 57.704027] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.709383] ? trace_hardirqs_off_caller+0x300/0x300 [ 57.714497] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 57.719251] __x64_sys_sendmsg+0x78/0xb0 [ 57.723307] do_syscall_64+0x1a3/0x800 [ 57.727231] ? syscall_return_slowpath+0x5f0/0x5f0 [ 57.732164] ? prepare_exit_to_usermode+0x232/0x3b0 [ 57.737173] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 57.742011] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.747202] RIP: 0033:0x457ec9 [ 57.750391] Code: 6d 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 57.769297] RSP: 002b:00007f1b76ff5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.776999] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457ec9 [ 57.784256] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000008 [ 57.791514] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 57.798778] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1b76ff66d4 [ 57.806035] R13: 00000000004c5188 R14: 00000000004d8a10 R15: 00000000ffffffff [ 57.813299] Modules linked in: [ 57.817106] ---[ end trace 1419bd08dcf6705d ]--- [ 57.821908] RIP: 0010:__smc_diag_dump.isra.0+0x32a/0x2ba0 [ 57.827444] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 26 25 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 d2 [ 57.846374] RSP: 0018:ffff888093c17120 EFLAGS: 00010203 [ 57.851787] RAX: dffffc0000000000 RBX: ffff8880988b2080 RCX: 0000000000000000 [ 57.859078] RDX: 0000000000000001 RSI: ffffffff87b6b452 RDI: 000000000000000e [ 57.866341] RBP: ffff888093c173e8 R08: ffff88807f008280 R09: ffff888097961018 [ 57.873634] R10: ffffed1012f2c1f8 R11: ffff888097960fc7 R12: ffff888081a50760 [ 57.880921] R13: ffff888097960fc8 R14: ffff8880988b24e0 R15: 0000000000000000 [ 57.888189] FS: 00007f1b76ff6700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 57.896426] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.902325] CR2: 00000000004dac90 CR3: 000000008be87000 CR4: 00000000001406e0 [ 57.909613] Kernel panic - not syncing: Fatal exception [ 57.915865] Kernel Offset: disabled [ 57.919486] Rebooting in 86400 seconds..