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. [ 34.091975] audit: type=1800 audit(1544033807.309:33): pid=6021 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 34.113065] audit: type=1800 audit(1544033807.309:34): pid=6021 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 39.264637] audit: type=1400 audit(1544033812.489:35): avc: denied { map } for pid=6198 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 [ 48.525308] audit: type=1400 audit(1544033821.749:36): avc: denied { map } for pid=6207 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts. [ 139.756717] audit: type=1400 audit(1544033912.979:37): avc: denied { map } for pid=6214 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/12/05 18:18:33 parsed 1 programs [ 140.320027] audit: type=1400 audit(1544033913.539:38): avc: denied { map } for pid=6214 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=14910 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2018/12/05 18:18:35 executed programs: 0 [ 142.399844] IPVS: ftp: loaded support on port[0] = 21 [ 142.408906] IPVS: ftp: loaded support on port[0] = 21 [ 142.472310] IPVS: ftp: loaded support on port[0] = 21 [ 142.490285] IPVS: ftp: loaded support on port[0] = 21 [ 142.524395] IPVS: ftp: loaded support on port[0] = 21 [ 142.559720] IPVS: ftp: loaded support on port[0] = 21 [ 143.564970] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.571956] bridge0: port 1(bridge_slave_0) entered disabled state [ 143.581728] device bridge_slave_0 entered promiscuous mode [ 143.591461] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.602560] bridge0: port 1(bridge_slave_0) entered disabled state [ 143.609927] device bridge_slave_0 entered promiscuous mode [ 143.618307] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.624970] bridge0: port 1(bridge_slave_0) entered disabled state [ 143.631890] device bridge_slave_0 entered promiscuous mode [ 143.653628] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.659963] bridge0: port 1(bridge_slave_0) entered disabled state [ 143.671250] device bridge_slave_0 entered promiscuous mode [ 143.678431] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.686283] bridge0: port 2(bridge_slave_1) entered disabled state [ 143.693762] device bridge_slave_1 entered promiscuous mode [ 143.705578] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.711960] bridge0: port 2(bridge_slave_1) entered disabled state [ 143.721436] device bridge_slave_1 entered promiscuous mode [ 143.728278] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.738114] bridge0: port 2(bridge_slave_1) entered disabled state [ 143.745201] device bridge_slave_1 entered promiscuous mode [ 143.752452] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 143.760727] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 143.771954] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.782583] bridge0: port 2(bridge_slave_1) entered disabled state [ 143.789434] device bridge_slave_1 entered promiscuous mode [ 143.798284] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.806651] bridge0: port 1(bridge_slave_0) entered disabled state [ 143.813676] device bridge_slave_0 entered promiscuous mode [ 143.820625] bridge0: port 1(bridge_slave_0) entered blocking state [ 143.827411] bridge0: port 1(bridge_slave_0) entered disabled state [ 143.834782] device bridge_slave_0 entered promiscuous mode [ 143.842463] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 143.852212] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 143.862030] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 143.870933] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 143.880337] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.887706] bridge0: port 2(bridge_slave_1) entered disabled state [ 143.895135] device bridge_slave_1 entered promiscuous mode [ 143.907850] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 143.917445] bridge0: port 2(bridge_slave_1) entered blocking state [ 143.926055] bridge0: port 2(bridge_slave_1) entered disabled state [ 143.940159] device bridge_slave_1 entered promiscuous mode [ 143.947063] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 143.972014] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 143.986372] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 144.012141] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 144.021244] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 144.045549] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 144.066305] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 144.080135] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 144.107643] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 144.124673] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 144.141332] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 144.196479] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 144.225631] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 144.246056] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 144.271027] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 144.287586] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 144.300538] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 144.321714] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 144.342006] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 144.353987] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 144.362621] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 144.376141] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 144.386055] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 144.396910] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 144.413066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 144.424578] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 144.442326] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 144.486875] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 144.514267] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 144.523038] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 144.538014] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 144.557718] team0: Port device team_slave_0 added [ 144.572102] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 144.585435] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 144.592899] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 144.620351] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 144.651006] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 144.661959] team0: Port device team_slave_1 added [ 144.667832] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 144.680743] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 144.690029] team0: Port device team_slave_0 added [ 144.723583] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 144.731854] team0: Port device team_slave_0 added [ 144.745813] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 144.754934] team0: Port device team_slave_0 added [ 144.763653] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 144.784806] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 144.792208] team0: Port device team_slave_1 added [ 144.809942] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 144.849112] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 144.860194] team0: Port device team_slave_1 added [ 144.870829] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 144.879900] team0: Port device team_slave_1 added [ 144.888457] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 144.904261] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 144.924256] team0: Port device team_slave_0 added [ 144.930751] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 144.946804] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 144.955909] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 144.964933] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 144.972332] team0: Port device team_slave_0 added [ 144.985774] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 145.003927] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 145.018345] team0: Port device team_slave_1 added [ 145.034200] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 145.041834] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.050534] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 145.059026] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 145.070945] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 145.096145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 145.113848] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 145.140535] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 145.148866] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 145.156813] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 145.165330] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 145.172845] team0: Port device team_slave_1 added [ 145.181303] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 145.206133] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.220203] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 145.238004] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 145.247247] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 145.259806] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 145.271638] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 145.290130] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 145.305721] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 145.315576] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 145.339865] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 145.348111] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 145.356024] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 145.364108] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 145.371841] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 145.387557] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 145.399334] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 145.413064] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.421037] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 145.437908] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 145.446147] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 145.454500] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 145.462730] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.470641] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 145.480110] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 145.496427] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.506535] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 145.524335] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 145.537827] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 145.555713] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 145.612157] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 145.628868] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 145.640672] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 146.033080] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.039600] bridge0: port 2(bridge_slave_1) entered forwarding state [ 146.046631] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.053035] bridge0: port 1(bridge_slave_0) entered forwarding state [ 146.065230] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 146.252235] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.258674] bridge0: port 2(bridge_slave_1) entered forwarding state [ 146.265394] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.271764] bridge0: port 1(bridge_slave_0) entered forwarding state [ 146.287540] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 146.296119] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.302536] bridge0: port 2(bridge_slave_1) entered forwarding state [ 146.309200] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.315666] bridge0: port 1(bridge_slave_0) entered forwarding state [ 146.323892] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 146.338162] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 146.346968] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 146.368459] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 146.413810] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.420182] bridge0: port 2(bridge_slave_1) entered forwarding state [ 146.426904] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.433305] bridge0: port 1(bridge_slave_0) entered forwarding state [ 146.444903] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 146.467456] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.473856] bridge0: port 2(bridge_slave_1) entered forwarding state [ 146.480561] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.486978] bridge0: port 1(bridge_slave_0) entered forwarding state [ 146.513856] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 146.520265] bridge0: port 2(bridge_slave_1) entered blocking state [ 146.526716] bridge0: port 2(bridge_slave_1) entered forwarding state [ 146.533434] bridge0: port 1(bridge_slave_0) entered blocking state [ 146.539810] bridge0: port 1(bridge_slave_0) entered forwarding state [ 146.549169] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 147.368235] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 147.383613] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 147.390800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 149.121109] 8021q: adding VLAN 0 to HW filter on device bond0 [ 149.136245] 8021q: adding VLAN 0 to HW filter on device bond0 [ 149.346399] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 149.369808] 8021q: adding VLAN 0 to HW filter on device bond0 [ 149.423879] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 149.451202] 8021q: adding VLAN 0 to HW filter on device bond0 [ 149.461604] 8021q: adding VLAN 0 to HW filter on device bond0 [ 149.480366] 8021q: adding VLAN 0 to HW filter on device bond0 [ 149.637412] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 149.664423] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 149.676763] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 149.687266] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 149.706893] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 149.720834] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 149.742511] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 149.749598] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 149.765747] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 149.783490] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 149.913615] 8021q: adding VLAN 0 to HW filter on device team0 [ 149.967804] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 149.984667] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 149.993195] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 150.007644] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 150.028359] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 150.037675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 150.049650] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 150.065086] 8021q: adding VLAN 0 to HW filter on device team0 [ 150.073749] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 150.087960] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 150.096019] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 150.113234] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 150.121250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 150.315791] 8021q: adding VLAN 0 to HW filter on device team0 [ 150.335673] 8021q: adding VLAN 0 to HW filter on device team0 [ 150.346764] 8021q: adding VLAN 0 to HW filter on device team0 [ 150.357691] 8021q: adding VLAN 0 to HW filter on device team0 [ 151.575796] audit: type=1400 audit(1544033924.799:39): avc: denied { associate } for pid=6234 comm="syz-executor3" name="syz3" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 151.897702] hrtimer: interrupt took 36373 ns 2018/12/05 18:18:45 executed programs: 6 [ 152.889734] ================================================================== [ 152.897149] BUG: KASAN: use-after-free in __lock_acquire+0x36d9/0x4c20 [ 152.897167] Read of size 8 at addr ffff8881b0f54820 by task syz-executor2/7909 [ 152.897170] [ 152.897184] CPU: 0 PID: 7909 Comm: syz-executor2 Not tainted 4.20.0-rc5+ #142 [ 152.911283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 152.911288] Call Trace: [ 152.911309] dump_stack+0x244/0x39d [ 152.911326] ? dump_stack_print_info.cold.1+0x20/0x20 [ 152.911338] ? printk+0xa7/0xcf [ 152.911355] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 152.949030] print_address_description.cold.7+0x9/0x1ff [ 152.954417] kasan_report.cold.8+0x242/0x309 [ 152.958850] ? __lock_acquire+0x36d9/0x4c20 [ 152.963186] __asan_report_load8_noabort+0x14/0x20 [ 152.968125] __lock_acquire+0x36d9/0x4c20 [ 152.972281] ? __free_pages+0x149/0x190 [ 152.976261] ? free_unref_page+0x960/0x960 [ 152.980508] ? mark_held_locks+0x130/0x130 [ 152.984781] ? finish_task_switch+0x615/0x910 [ 152.989308] ? __switch_to_asm+0x40/0x70 [ 152.993369] ? preempt_notifier_register+0x200/0x200 [ 152.998497] ? __switch_to_asm+0x34/0x70 [ 153.002547] ? __switch_to_asm+0x34/0x70 [ 153.006612] ? __switch_to_asm+0x40/0x70 [ 153.010668] ? __switch_to_asm+0x34/0x70 [ 153.014713] ? __switch_to_asm+0x40/0x70 [ 153.018768] ? __switch_to_asm+0x34/0x70 [ 153.022840] ? __switch_to_asm+0x40/0x70 [ 153.026923] ? __switch_to_asm+0x34/0x70 [ 153.030995] ? __switch_to_asm+0x34/0x70 [ 153.035061] ? __switch_to_asm+0x40/0x70 [ 153.039129] ? __switch_to_asm+0x34/0x70 [ 153.043194] ? __switch_to_asm+0x40/0x70 [ 153.047248] ? __switch_to_asm+0x34/0x70 [ 153.051325] ? __switch_to_asm+0x40/0x70 [ 153.055384] ? __schedule+0x8d7/0x21d0 [ 153.059276] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 153.064021] ? __sched_text_start+0x8/0x8 [ 153.068163] ? print_usage_bug+0xc0/0xc0 [ 153.072234] ? retint_kernel+0x2d/0x2d [ 153.076134] lock_acquire+0x1ed/0x520 [ 153.079931] ? __lock_sock+0x203/0x350 [ 153.083827] ? lock_release+0xa00/0xa00 [ 153.087803] ? _raw_spin_unlock_bh+0x30/0x40 [ 153.092231] ? trace_hardirqs_off_caller+0x310/0x310 [ 153.097371] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.102931] ? check_preemption_disabled+0x48/0x280 [ 153.107942] ? __lock_sock+0x1f6/0x350 [ 153.111827] _raw_spin_lock_bh+0x31/0x40 [ 153.115883] ? __lock_sock+0x203/0x350 [ 153.119768] __lock_sock+0x203/0x350 [ 153.123478] ? sk_setup_caps+0x690/0x690 [ 153.127550] ? finish_wait+0x430/0x430 [ 153.131444] lock_sock_nested+0xfe/0x120 [ 153.135504] sctp_sock_dump+0x122/0xb20 [ 153.139489] ? rhashtable_walk_exit+0x22a/0x360 [ 153.144143] ? rhashtable_walk_enter+0x420/0x420 [ 153.148893] ? __sanitizer_cov_trace_cmp2+0x18/0x20 [ 153.153923] sctp_for_each_transport+0x2b5/0x370 [ 153.158670] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.164203] ? sctp_tsp_dump_one+0x850/0x850 [ 153.168609] ? sctp_v6_copy_ip_options.cold.16+0x28/0x28 [ 153.174048] ? sctp_transport_get_next+0x170/0x170 [ 153.178965] ? sctp_for_each_endpoint+0x130/0x1c0 [ 153.183812] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 153.188833] ? sctp_for_each_endpoint+0x165/0x1c0 [ 153.193876] sctp_diag_dump+0x3ac/0x660 [ 153.197846] ? inet_diag_msg_sctpladdrs_fill+0x360/0x360 [ 153.203301] ? netdev_alloc_frag+0x1f0/0x1f0 [ 153.207748] ? mark_held_locks+0xc7/0x130 [ 153.211958] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 153.216722] ? mutex_lock_nested+0x16/0x20 [ 153.220964] __inet_diag_dump+0xa8/0x140 [ 153.225014] inet_diag_dump+0x9b/0x110 [ 153.228894] netlink_dump+0x606/0x1080 [ 153.232796] ? netlink_broadcast+0x50/0x50 [ 153.237024] __netlink_dump_start+0x59a/0x7c0 [ 153.241506] inet_diag_handler_cmd+0x2ce/0x3f0 [ 153.246080] ? inet_diag_rcv_msg_compat+0x400/0x400 [ 153.251083] ? inet_diag_dump_compat+0x490/0x490 [ 153.255842] sock_diag_rcv_msg+0x31d/0x410 [ 153.260088] netlink_rcv_skb+0x172/0x440 [ 153.264165] ? sock_diag_bind+0x80/0x80 [ 153.268136] ? netlink_ack+0xb80/0xb80 [ 153.272035] sock_diag_rcv+0x2a/0x40 [ 153.275747] netlink_unicast+0x5a5/0x760 [ 153.279809] ? netlink_attachskb+0x9a0/0x9a0 [ 153.284241] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.289786] netlink_sendmsg+0xa18/0xfc0 [ 153.293853] ? netlink_unicast+0x760/0x760 [ 153.298082] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 153.302839] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.308360] ? security_socket_sendmsg+0x94/0xc0 [ 153.313110] ? netlink_unicast+0x760/0x760 [ 153.317344] sock_sendmsg+0xd5/0x120 [ 153.321042] sock_write_iter+0x35e/0x5c0 [ 153.325283] ? sock_sendmsg+0x120/0x120 [ 153.329262] ? file_has_perm+0x2c0/0x3d0 [ 153.333332] ? __might_sleep+0x95/0x190 [ 153.337316] do_iter_readv_writev+0x8b0/0xa80 [ 153.341821] ? vfs_dedupe_file_range+0x700/0x700 [ 153.346620] ? rw_verify_area+0x118/0x360 [ 153.350769] do_iter_write+0x185/0x5f0 [ 153.354675] ? dup_iter+0x260/0x260 [ 153.358304] vfs_writev+0x1f1/0x360 [ 153.361973] ? vfs_iter_write+0xb0/0xb0 [ 153.365947] ? lock_release+0xa00/0xa00 [ 153.369916] ? perf_trace_sched_process_exec+0x860/0x860 [ 153.375361] ? posix_ktime_get_ts+0x15/0x20 [ 153.379711] ? trace_hardirqs_off_caller+0x310/0x310 [ 153.384830] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 153.389591] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 153.394204] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.399726] ? __fdget_pos+0xde/0x200 [ 153.403527] ? __fdget_raw+0x20/0x20 [ 153.407261] do_writev+0x11a/0x310 [ 153.410822] ? vfs_writev+0x360/0x360 [ 153.414630] __x64_sys_writev+0x75/0xb0 [ 153.418608] do_syscall_64+0x1b9/0x820 [ 153.422496] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 153.427852] ? syscall_return_slowpath+0x5e0/0x5e0 [ 153.432784] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 153.437650] ? trace_hardirqs_on_caller+0x310/0x310 [ 153.442673] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 153.447685] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 153.453220] ? prepare_exit_to_usermode+0x291/0x3b0 [ 153.458234] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 153.463067] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 153.468248] RIP: 0033:0x457569 [ 153.471440] Code: fd b3 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 b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 153.490342] RSP: 002b:00007f75b80d7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 153.498029] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 153.505289] RDX: 0000000000000001 RSI: 000000002051c000 RDI: 000000000000000a [ 153.512583] RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 [ 153.519844] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75b80d86d4 [ 153.527100] R13: 00000000004c3807 R14: 00000000004d9f50 R15: 00000000ffffffff [ 153.534368] [ 153.535985] Allocated by task 7881: [ 153.539617] save_stack+0x43/0xd0 [ 153.543078] kasan_kmalloc+0xc7/0xe0 [ 153.546796] kasan_slab_alloc+0x12/0x20 [ 153.550768] kmem_cache_alloc+0x12e/0x730 [ 153.554930] sk_prot_alloc+0x69/0x2e0 [ 153.558736] sk_alloc+0x10d/0x1690 [ 153.562282] inet_create+0x509/0x1070 [ 153.566091] __sock_create+0x536/0x930 [ 153.569963] __sys_socket+0x106/0x260 [ 153.573751] __x64_sys_socket+0x73/0xb0 [ 153.577731] do_syscall_64+0x1b9/0x820 [ 153.581645] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 153.586832] [ 153.588452] Freed by task 7908: [ 153.591736] save_stack+0x43/0xd0 [ 153.595175] __kasan_slab_free+0x102/0x150 [ 153.599426] kasan_slab_free+0xe/0x10 [ 153.603218] kmem_cache_free+0x83/0x290 [ 153.607178] __sk_destruct+0x728/0xa80 [ 153.611060] sk_destruct+0x78/0x90 [ 153.614594] __sk_free+0xcf/0x300 [ 153.618036] sk_free+0x42/0x50 [ 153.621227] sctp_close+0x8d4/0xad0 [ 153.624872] inet_release+0x104/0x1f0 [ 153.628663] __sock_release+0xd7/0x250 [ 153.632555] sock_close+0x19/0x20 [ 153.636010] __fput+0x385/0xa30 [ 153.639294] ____fput+0x15/0x20 [ 153.642581] task_work_run+0x1e8/0x2a0 [ 153.646472] get_signal+0x1558/0x1980 [ 153.650298] do_signal+0x9c/0x21c0 [ 153.653850] exit_to_usermode_loop+0x2e5/0x380 [ 153.658427] do_syscall_64+0x6be/0x820 [ 153.662303] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 153.667475] [ 153.669104] The buggy address belongs to the object at ffff8881b0f54780 [ 153.669104] which belongs to the cache SCTP(33:syz2) of size 1776 [ 153.682032] The buggy address is located 160 bytes inside of [ 153.682032] 1776-byte region [ffff8881b0f54780, ffff8881b0f54e70) [ 153.693990] The buggy address belongs to the page: [ 153.698908] page:ffffea0006c3d500 count:1 mapcount:0 mapping:ffff8881d9391e40 index:0x0 [ 153.707048] flags: 0x2fffc0000000200(slab) [ 153.711277] raw: 02fffc0000000200 ffffea0007310108 ffff8881cc327148 ffff8881d9391e40 [ 153.719168] raw: 0000000000000000 ffff8881b0f54000 0000000100000002 ffff8881c0f20580 [ 153.727046] page dumped because: kasan: bad access detected [ 153.732746] page->mem_cgroup:ffff8881c0f20580 [ 153.737216] [ 153.738824] Memory state around the buggy address: [ 153.743744] ffff8881b0f54700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 153.751089] ffff8881b0f54780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 153.758434] >ffff8881b0f54800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 153.765774] ^ [ 153.770185] ffff8881b0f54880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 153.777552] ffff8881b0f54900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 153.784910] ================================================================== [ 153.792262] Disabling lock debugging due to kernel taint [ 153.797703] Kernel panic - not syncing: panic_on_warn set ... [ 153.803573] CPU: 0 PID: 7909 Comm: syz-executor2 Tainted: G B 4.20.0-rc5+ #142 [ 153.812212] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 153.821545] Call Trace: [ 153.824127] dump_stack+0x244/0x39d [ 153.827753] ? dump_stack_print_info.cold.1+0x20/0x20 [ 153.832939] panic+0x2ad/0x55c [ 153.836132] ? add_taint.cold.5+0x16/0x16 [ 153.840267] ? add_taint.cold.5+0x5/0x16 [ 153.844315] ? trace_hardirqs_off+0xaf/0x310 [ 153.848712] kasan_end_report+0x47/0x4f [ 153.852672] kasan_report.cold.8+0x76/0x309 [ 153.856979] ? __lock_acquire+0x36d9/0x4c20 [ 153.861317] __asan_report_load8_noabort+0x14/0x20 [ 153.866278] __lock_acquire+0x36d9/0x4c20 [ 153.870415] ? __free_pages+0x149/0x190 [ 153.874382] ? free_unref_page+0x960/0x960 [ 153.878614] ? mark_held_locks+0x130/0x130 [ 153.882836] ? finish_task_switch+0x615/0x910 [ 153.887312] ? __switch_to_asm+0x40/0x70 [ 153.891357] ? preempt_notifier_register+0x200/0x200 [ 153.896439] ? __switch_to_asm+0x34/0x70 [ 153.900480] ? __switch_to_asm+0x34/0x70 [ 153.904547] ? __switch_to_asm+0x40/0x70 [ 153.908612] ? __switch_to_asm+0x34/0x70 [ 153.912662] ? __switch_to_asm+0x40/0x70 [ 153.916719] ? __switch_to_asm+0x34/0x70 [ 153.920762] ? __switch_to_asm+0x40/0x70 [ 153.924812] ? __switch_to_asm+0x34/0x70 [ 153.928853] ? __switch_to_asm+0x34/0x70 [ 153.932898] ? __switch_to_asm+0x40/0x70 [ 153.936945] ? __switch_to_asm+0x34/0x70 [ 153.940988] ? __switch_to_asm+0x40/0x70 [ 153.945033] ? __switch_to_asm+0x34/0x70 [ 153.949075] ? __switch_to_asm+0x40/0x70 [ 153.953121] ? __schedule+0x8d7/0x21d0 [ 153.956996] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 153.961733] ? __sched_text_start+0x8/0x8 [ 153.965866] ? print_usage_bug+0xc0/0xc0 [ 153.969908] ? retint_kernel+0x2d/0x2d [ 153.973785] lock_acquire+0x1ed/0x520 [ 153.977572] ? __lock_sock+0x203/0x350 [ 153.981463] ? lock_release+0xa00/0xa00 [ 153.985417] ? _raw_spin_unlock_bh+0x30/0x40 [ 153.989816] ? trace_hardirqs_off_caller+0x310/0x310 [ 153.994903] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 154.000427] ? check_preemption_disabled+0x48/0x280 [ 154.005456] ? __lock_sock+0x1f6/0x350 [ 154.009334] _raw_spin_lock_bh+0x31/0x40 [ 154.013414] ? __lock_sock+0x203/0x350 [ 154.017287] __lock_sock+0x203/0x350 [ 154.020991] ? sk_setup_caps+0x690/0x690 [ 154.025053] ? finish_wait+0x430/0x430 [ 154.028927] lock_sock_nested+0xfe/0x120 [ 154.032975] sctp_sock_dump+0x122/0xb20 [ 154.036933] ? rhashtable_walk_exit+0x22a/0x360 [ 154.041593] ? rhashtable_walk_enter+0x420/0x420 [ 154.046344] ? __sanitizer_cov_trace_cmp2+0x18/0x20 [ 154.051346] sctp_for_each_transport+0x2b5/0x370 [ 154.056096] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 154.061642] ? sctp_tsp_dump_one+0x850/0x850 [ 154.066058] ? sctp_v6_copy_ip_options.cold.16+0x28/0x28 [ 154.071508] ? sctp_transport_get_next+0x170/0x170 [ 154.076429] ? sctp_for_each_endpoint+0x130/0x1c0 [ 154.081258] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 154.086255] ? sctp_for_each_endpoint+0x165/0x1c0 [ 154.091081] sctp_diag_dump+0x3ac/0x660 [ 154.095049] ? inet_diag_msg_sctpladdrs_fill+0x360/0x360 [ 154.100513] ? netdev_alloc_frag+0x1f0/0x1f0 [ 154.104925] ? mark_held_locks+0xc7/0x130 [ 154.109062] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 154.113814] ? mutex_lock_nested+0x16/0x20 [ 154.118033] __inet_diag_dump+0xa8/0x140 [ 154.122078] inet_diag_dump+0x9b/0x110 [ 154.125950] netlink_dump+0x606/0x1080 [ 154.129827] ? netlink_broadcast+0x50/0x50 [ 154.134062] __netlink_dump_start+0x59a/0x7c0 [ 154.138552] inet_diag_handler_cmd+0x2ce/0x3f0 [ 154.143119] ? inet_diag_rcv_msg_compat+0x400/0x400 [ 154.148119] ? inet_diag_dump_compat+0x490/0x490 [ 154.152866] sock_diag_rcv_msg+0x31d/0x410 [ 154.157101] netlink_rcv_skb+0x172/0x440 [ 154.161143] ? sock_diag_bind+0x80/0x80 [ 154.165100] ? netlink_ack+0xb80/0xb80 [ 154.168982] sock_diag_rcv+0x2a/0x40 [ 154.172680] netlink_unicast+0x5a5/0x760 [ 154.176728] ? netlink_attachskb+0x9a0/0x9a0 [ 154.181122] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 154.186646] netlink_sendmsg+0xa18/0xfc0 [ 154.190694] ? netlink_unicast+0x760/0x760 [ 154.194914] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 154.199664] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 154.205206] ? security_socket_sendmsg+0x94/0xc0 [ 154.209956] ? netlink_unicast+0x760/0x760 [ 154.214186] sock_sendmsg+0xd5/0x120 [ 154.217898] sock_write_iter+0x35e/0x5c0 [ 154.221952] ? sock_sendmsg+0x120/0x120 [ 154.225924] ? file_has_perm+0x2c0/0x3d0 [ 154.229971] ? __might_sleep+0x95/0x190 [ 154.233929] do_iter_readv_writev+0x8b0/0xa80 [ 154.238411] ? vfs_dedupe_file_range+0x700/0x700 [ 154.243166] ? rw_verify_area+0x118/0x360 [ 154.247307] do_iter_write+0x185/0x5f0 [ 154.251182] ? dup_iter+0x260/0x260 [ 154.254800] vfs_writev+0x1f1/0x360 [ 154.258413] ? vfs_iter_write+0xb0/0xb0 [ 154.262377] ? lock_release+0xa00/0xa00 [ 154.266340] ? perf_trace_sched_process_exec+0x860/0x860 [ 154.271784] ? posix_ktime_get_ts+0x15/0x20 [ 154.276104] ? trace_hardirqs_off_caller+0x310/0x310 [ 154.281194] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 154.285933] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 154.290502] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 154.296029] ? __fdget_pos+0xde/0x200 [ 154.299814] ? __fdget_raw+0x20/0x20 [ 154.303511] do_writev+0x11a/0x310 [ 154.307043] ? vfs_writev+0x360/0x360 [ 154.310831] __x64_sys_writev+0x75/0xb0 [ 154.314795] do_syscall_64+0x1b9/0x820 [ 154.318684] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 154.324032] ? syscall_return_slowpath+0x5e0/0x5e0 [ 154.328962] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 154.333795] ? trace_hardirqs_on_caller+0x310/0x310 [ 154.338802] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 154.343806] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 154.349343] ? prepare_exit_to_usermode+0x291/0x3b0 [ 154.354347] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 154.359192] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 154.364363] RIP: 0033:0x457569 [ 154.367549] Code: fd b3 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 b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 154.386432] RSP: 002b:00007f75b80d7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 154.394121] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 154.401373] RDX: 0000000000000001 RSI: 000000002051c000 RDI: 000000000000000a [ 154.408623] RBP: 000000000072c0e0 R08: 0000000000000000 R09: 0000000000000000 [ 154.415874] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75b80d86d4 [ 154.423124] R13: 00000000004c3807 R14: 00000000004d9f50 R15: 00000000ffffffff [ 154.431350] Kernel Offset: disabled [ 154.434993] Rebooting in 86400 seconds..