[ 41.850847] IPVS: ftp: loaded support on port[0] = 21 [ 43.008008] can: request_module (can-proto-0) failed. [ 43.017438] can: request_module (can-proto-0) failed. [ 43.025989] can: request_module (can-proto-0) failed. [ 43.182098] audit: type=1400 audit(1577251135.596:37): avc: denied { create } for pid=6738 comm="syz-fuzzer" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_crypto_socket permissive=1 [ 43.205999] audit: type=1400 audit(1577251135.596:38): avc: denied { create } for pid=6738 comm="syz-fuzzer" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 43.229596] audit: type=1400 audit(1577251135.596:39): avc: denied { create } for pid=6738 comm="syz-fuzzer" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 43.394926] random: sshd: uninitialized urandom read (32 bytes read) [ 44.095068] random: sshd: uninitialized urandom read (32 bytes read) [ 44.291066] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.108' (ECDSA) to the list of known hosts. 2019/12/25 05:19:02 parsed 1 programs 2019/12/25 05:19:02 executed programs: 0 [ 50.088728] audit: type=1400 audit(1577251142.496:40): avc: denied { map } for pid=6810 comm="syz-execprog" path="/root/syzkaller-shm514521764" dev="sda1" ino=16492 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 50.380942] IPVS: ftp: loaded support on port[0] = 21 [ 51.265294] chnl_net:caif_netlink_parms(): no params data found [ 51.272850] IPVS: ftp: loaded support on port[0] = 21 [ 51.318062] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.325019] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.332084] device bridge_slave_0 entered promiscuous mode [ 51.343046] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.349459] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.356373] device bridge_slave_1 entered promiscuous mode [ 51.372972] IPVS: ftp: loaded support on port[0] = 21 [ 51.378780] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.389597] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.407663] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 51.414969] team0: Port device team_slave_0 added [ 51.423481] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 51.430647] team0: Port device team_slave_1 added [ 51.437970] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 51.448455] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 51.542364] device hsr_slave_0 entered promiscuous mode [ 51.580294] device hsr_slave_1 entered promiscuous mode [ 51.650903] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 51.659594] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 51.667100] audit: type=1400 audit(1577251144.076:41): avc: denied { write } for pid=6835 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 51.694577] audit: type=1400 audit(1577251144.106:42): avc: denied { read } for pid=6835 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 51.724575] chnl_net:caif_netlink_parms(): no params data found [ 51.773157] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.779577] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.786666] device bridge_slave_0 entered promiscuous mode [ 51.794204] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.800634] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.807541] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.813960] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.826106] IPVS: ftp: loaded support on port[0] = 21 [ 51.830882] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.838086] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.846861] device bridge_slave_1 entered promiscuous mode [ 51.875719] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.884970] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.936066] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 51.943691] team0: Port device team_slave_0 added [ 51.949456] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 51.957044] team0: Port device team_slave_1 added [ 51.962805] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 51.976285] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 51.983757] chnl_net:caif_netlink_parms(): no params data found [ 52.011135] IPVS: ftp: loaded support on port[0] = 21 [ 52.082624] device hsr_slave_0 entered promiscuous mode [ 52.140442] device hsr_slave_1 entered promiscuous mode [ 52.185358] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.213131] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.246195] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.253674] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.261169] device bridge_slave_0 entered promiscuous mode [ 52.269568] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.276409] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.283371] device bridge_slave_1 entered promiscuous mode [ 52.311728] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.322400] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.344071] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.351390] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.361378] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 52.373156] chnl_net:caif_netlink_parms(): no params data found [ 52.387708] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.394814] team0: Port device team_slave_0 added [ 52.411916] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.418935] team0: Port device team_slave_1 added [ 52.424836] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.435921] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.446565] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.456110] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.532004] device hsr_slave_0 entered promiscuous mode [ 52.570299] device hsr_slave_1 entered promiscuous mode [ 52.656366] IPVS: ftp: loaded support on port[0] = 21 [ 52.657825] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 52.678285] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.685196] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 52.692602] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.701774] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 52.707834] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.717178] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.724031] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.731496] device bridge_slave_0 entered promiscuous mode [ 52.737778] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.747892] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 52.757816] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.764310] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.771747] device bridge_slave_1 entered promiscuous mode [ 52.783785] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.792198] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.799894] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.806280] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.822932] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 52.830186] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.837996] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.847010] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.853394] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.915511] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 52.944965] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.953738] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.966969] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 52.980999] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.989402] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 53.009747] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 53.017516] team0: Port device team_slave_0 added [ 53.024782] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.037006] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 53.049460] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 53.056785] team0: Port device team_slave_1 added [ 53.070758] chnl_net:caif_netlink_parms(): no params data found [ 53.080652] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.088273] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.097107] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.105153] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 53.112813] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 53.124688] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 53.139062] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.148055] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.154810] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 53.162592] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 53.177224] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 53.232110] device hsr_slave_0 entered promiscuous mode [ 53.270371] device hsr_slave_1 entered promiscuous mode [ 53.312106] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 53.320417] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 53.326555] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.356253] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 53.364505] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 53.372042] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 53.378818] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.388759] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 53.401558] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 53.427659] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 53.435829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 53.444451] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 53.451310] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 53.458288] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 53.473728] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 53.488886] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 53.499433] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 53.507347] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 53.515339] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.521718] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.530964] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.537966] chnl_net:caif_netlink_parms(): no params data found [ 53.547544] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.554318] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.563065] device bridge_slave_0 entered promiscuous mode [ 53.569932] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.576615] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.583890] device bridge_slave_1 entered promiscuous mode [ 53.593083] 8021q: adding VLAN 0 to HW filter on device bond0 [ 53.599809] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 53.622601] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 53.629311] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 53.638443] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 53.647818] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 53.663485] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 53.672705] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.679838] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 53.689291] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.697926] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 53.706974] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.713410] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.720382] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 53.730261] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.737523] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 53.754887] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 53.776430] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 53.787246] team0: Port device team_slave_0 added [ 53.793683] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 53.800898] team0: Port device team_slave_1 added [ 53.806515] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 53.819882] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 53.838222] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 53.846085] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 53.853761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 53.866475] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 53.873218] 8021q: adding VLAN 0 to HW filter on device team0 [ 53.879524] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.886601] bridge0: port 1(bridge_slave_0) entered disabled state [ 53.896051] device bridge_slave_0 entered promiscuous mode [ 53.903058] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 53.911836] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 53.924021] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.933033] bridge0: port 2(bridge_slave_1) entered disabled state [ 53.939912] device bridge_slave_1 entered promiscuous mode [ 53.965101] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 53.973134] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 53.980791] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 53.989042] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 54.016948] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 54.024911] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 54.034790] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 54.042494] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 54.059382] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 54.103436] device hsr_slave_0 entered promiscuous mode [ 54.124596] ================================================================== [ 54.132087] BUG: KASAN: slab-out-of-bounds in bpf_skb_change_head+0x55e/0x6b0 [ 54.139469] Read of size 8 at addr ffff88806f42a450 by task syz-executor.0/6870 [ 54.146910] [ 54.148559] CPU: 0 PID: 6870 Comm: syz-executor.0 Not tainted 4.14.160-syzkaller #0 [ 54.156334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.165669] Call Trace: [ 54.168242] dump_stack+0xf7/0x13b [ 54.171764] ? bpf_skb_change_head+0x55e/0x6b0 [ 54.176326] print_address_description.cold.7+0x9/0x1c9 [ 54.181679] ? bpf_skb_change_head+0x55e/0x6b0 [ 54.186246] kasan_report.cold.8+0x11a/0x2d3 [ 54.190639] __asan_report_load8_noabort+0x14/0x20 [ 54.195546] bpf_skb_change_head+0x55e/0x6b0 [ 54.199942] ? __build_skb+0x2a/0x2b0 [ 54.203732] bpf_prog_147a7bac71f62ca7+0x3ff/0x1000 [ 54.208739] ? trace_hardirqs_on+0x10/0x10 [ 54.212976] ? trace_hardirqs_off+0x10/0x10 [ 54.217296] ? find_held_lock+0x36/0x1d0 [ 54.221348] ? bpf_test_run+0x32/0x2d0 [ 54.225219] ? lock_downgrade+0x7f0/0x7f0 [ 54.229340] ? lock_acquire+0x173/0x400 [ 54.233319] ? bpf_test_run+0x159/0x2d0 [ 54.237271] ? bpf_test_run+0x8a/0x2d0 [ 54.241666] ? eth_gro_receive+0x880/0x880 [ 54.245888] ? bpf_prog_test_run_skb+0x58a/0xbc0 [ 54.250628] ? bpf_test_init.isra.6+0xa0/0xa0 [ 54.255117] ? __bpf_prog_get+0x128/0x170 [ 54.259239] ? SyS_bpf+0x97e/0x28d3 [ 54.262860] ? bpf_prog_get+0x10/0x10 [ 54.266659] ? kasan_check_read+0x11/0x20 [ 54.270806] ? _copy_to_user+0x91/0xb0 [ 54.274698] ? put_timespec64+0xa4/0xf0 [ 54.278647] ? nsecs_to_jiffies+0x20/0x20 [ 54.282787] ? SyS_clock_gettime+0x115/0x160 [ 54.287186] ? do_syscall_64+0x4c/0x5b0 [ 54.291143] ? bpf_prog_get+0x10/0x10 [ 54.294942] ? do_syscall_64+0x1c7/0x5b0 [ 54.298978] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.303975] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 54.309418] [ 54.311027] Allocated by task 0: [ 54.314372] (stack is not available) [ 54.318692] [ 54.320315] Freed by task 0: [ 54.323319] (stack is not available) [ 54.327014] [ 54.328629] The buggy address belongs to the object at ffff88806f42a3c0 [ 54.328629] which belongs to the cache skbuff_head_cache of size 232 [ 54.341807] The buggy address is located 144 bytes inside of [ 54.341807] 232-byte region [ffff88806f42a3c0, ffff88806f42a4a8) [ 54.353673] The buggy address belongs to the page: [ 54.358583] page:ffffea0001bd0a80 count:1 mapcount:0 mapping:ffff88806f42a000 index:0x0 [ 54.366722] flags: 0x1fffc0000000100(slab) [ 54.370960] raw: 01fffc0000000100 ffff88806f42a000 0000000000000000 000000010000000c [ 54.378815] raw: ffffea0001bd81a0 ffffea0002a11e60 ffff88821b75e540 0000000000000000 [ 54.386674] page dumped because: kasan: bad access detected [ 54.392381] [ 54.393997] Memory state around the buggy address: [ 54.399062] ffff88806f42a300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 54.406411] ffff88806f42a380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 54.413763] >ffff88806f42a400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 54.421104] ^ [ 54.427074] ffff88806f42a480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 54.434411] ffff88806f42a500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 54.442193] ================================================================== [ 54.449534] Disabling lock debugging due to kernel taint [ 54.455833] Kernel panic - not syncing: panic_on_warn set ... [ 54.455833] [ 54.463296] CPU: 0 PID: 6870 Comm: syz-executor.0 Tainted: G B 4.14.160-syzkaller #0 [ 54.472313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.481793] Call Trace: [ 54.484457] dump_stack+0xf7/0x13b [ 54.487984] ? bpf_skb_change_head+0x55e/0x6b0 [ 54.492769] panic+0x1b0/0x358 [ 54.496060] ? add_taint.cold.5+0x11/0x11 [ 54.500471] ? bpf_skb_change_head+0x55e/0x6b0 [ 54.505045] kasan_end_report+0x47/0x4f [ 54.509014] kasan_report.cold.8+0x76/0x2d3 [ 54.513596] __asan_report_load8_noabort+0x14/0x20 [ 54.518508] bpf_skb_change_head+0x55e/0x6b0 [ 54.522927] ? __build_skb+0x2a/0x2b0 [ 54.526725] bpf_prog_147a7bac71f62ca7+0x3ff/0x1000 [ 54.531808] ? trace_hardirqs_on+0x10/0x10 [ 54.536043] ? trace_hardirqs_off+0x10/0x10 [ 54.540449] ? find_held_lock+0x36/0x1d0 [ 54.544494] ? bpf_test_run+0x32/0x2d0 [ 54.548364] ? lock_downgrade+0x7f0/0x7f0 [ 54.552490] ? lock_acquire+0x173/0x400 [ 54.556452] ? bpf_test_run+0x159/0x2d0 [ 54.560425] ? bpf_test_run+0x8a/0x2d0 [ 54.564391] ? eth_gro_receive+0x880/0x880 [ 54.568623] ? bpf_prog_test_run_skb+0x58a/0xbc0 [ 54.573367] ? bpf_test_init.isra.6+0xa0/0xa0 [ 54.577847] ? __bpf_prog_get+0x128/0x170 [ 54.581978] ? SyS_bpf+0x97e/0x28d3 [ 54.585599] ? bpf_prog_get+0x10/0x10 [ 54.589413] ? kasan_check_read+0x11/0x20 [ 54.593546] ? _copy_to_user+0x91/0xb0 [ 54.597594] ? put_timespec64+0xa4/0xf0 [ 54.601547] ? nsecs_to_jiffies+0x20/0x20 [ 54.605675] ? SyS_clock_gettime+0x115/0x160 [ 54.610084] ? do_syscall_64+0x4c/0x5b0 [ 54.614042] ? bpf_prog_get+0x10/0x10 [ 54.617822] ? do_syscall_64+0x1c7/0x5b0 [ 54.621873] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 54.626695] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 54.633471] Kernel Offset: disabled [ 54.637107] Rebooting in 86400 seconds..