[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 847.758423] audit: type=1400 audit(1599113450.474:8): avc: denied { execmem } for pid=6483 comm="syz-executor632" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 847.771774] netlink: 4 bytes leftover after parsing attributes in process `syz-executor632'. [ 847.794676] netlink: 4 bytes leftover after parsing attributes in process `syz-executor632'. [ 1006.541827] INFO: task syz-executor632:6493 blocked for more than 140 seconds. [ 1006.549555] Not tainted 4.19.142-syzkaller #0 [ 1006.555119] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1006.564270] syz-executor632 D25168 6493 6487 0x00000004 [ 1006.569950] Call Trace: [ 1006.573876] __schedule+0x887/0x2040 [ 1006.577636] ? io_schedule_timeout+0x140/0x140 [ 1006.583707] ? lock_downgrade+0x720/0x720 [ 1006.587909] ? __mutex_lock+0x458/0x1260 [ 1006.593285] schedule+0x8d/0x1b0 [ 1006.596683] schedule_preempt_disabled+0xf/0x20 [ 1006.601370] __mutex_lock+0x647/0x1260 [ 1006.607410] ? tcf_ife_init+0x105b/0x1730 [ 1006.613159] ? __mutex_add_waiter+0x160/0x160 [ 1006.617702] ? lock_downgrade+0x720/0x720 [ 1006.623260] tcf_ife_init+0x105b/0x1730 [ 1006.627289] ? vprintk_func+0x81/0x17e [ 1006.631279] ? ife_get_meta_u16+0x180/0x180 [ 1006.637490] tcf_action_init_1+0x93e/0xbf0 [ 1006.642644] ? tcf_action_dump_old+0x80/0x80 [ 1006.647178] ? memset+0x20/0x40 [ 1006.650466] tcf_action_init+0x26e/0x3b0 [ 1006.656257] ? tcf_action_init_1+0xbf0/0xbf0 [ 1006.661013] ? avc_has_perm_noaudit+0x1ec/0x390 [ 1006.667089] tcf_action_add+0xd9/0x360 [ 1006.671002] ? tca_action_gd+0x1550/0x1550 [ 1006.676615] ? memset+0x20/0x40 [ 1006.680052] ? nla_parse+0x1b2/0x290 [ 1006.685084] tc_ctl_action+0x327/0x407 [ 1006.688997] ? tcf_action_add+0x360/0x360 [ 1006.694401] ? tcf_action_add+0x360/0x360 [ 1006.698641] rtnetlink_rcv_msg+0x453/0xb80 [ 1006.704178] ? rtnl_calcit.isra.0+0x430/0x430 [ 1006.708766] ? __netlink_lookup+0x3fc/0x730 [ 1006.714326] ? lock_downgrade+0x720/0x720 [ 1006.718488] ? check_preemption_disabled+0x41/0x280 [ 1006.724851] netlink_rcv_skb+0x160/0x440 [ 1006.728944] ? rtnl_calcit.isra.0+0x430/0x430 [ 1006.735673] ? netlink_ack+0xae0/0xae0 [ 1006.739596] netlink_unicast+0x4d5/0x690 [ 1006.745667] ? netlink_sendskb+0x110/0x110 [ 1006.749944] netlink_sendmsg+0x6bb/0xc40 [ 1006.755271] ? nlmsg_notify+0x1a0/0x1a0 [ 1006.759329] ? kernel_recvmsg+0x220/0x220 [ 1006.764952] ? nlmsg_notify+0x1a0/0x1a0 [ 1006.768972] sock_sendmsg+0xc3/0x120 [ 1006.774064] ___sys_sendmsg+0x7bb/0x8e0 [ 1006.778082] ? copy_msghdr_from_user+0x440/0x440 [ 1006.784239] ? do_huge_pmd_anonymous_page+0x939/0x1cc0 [ 1006.789548] ? __fget+0x32f/0x510 [ 1006.794282] ? lock_downgrade+0x720/0x720 [ 1006.798452] ? check_preemption_disabled+0x41/0x280 [ 1006.804845] ? check_preemption_disabled+0x41/0x280 [ 1006.809897] ? __fget+0x356/0x510 [ 1006.814728] ? do_dup2+0x450/0x450 [ 1006.818301] ? __fdget+0x1d0/0x230 [ 1006.823238] __x64_sys_sendmsg+0x132/0x220 [ 1006.827497] ? __sys_sendmsg+0x1b0/0x1b0 [ 1006.832797] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1006.837576] ? trace_hardirqs_off_caller+0x69/0x210 [ 1006.843961] ? do_syscall_64+0x21/0x620 [ 1006.847978] do_syscall_64+0xf9/0x620 [ 1006.853188] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1006.858410] RIP: 0033:0x446dd9 [ 1006.862944] Code: Bad RIP value. [ 1006.866323] RSP: 002b:00007fb47f686db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1006.876147] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446dd9 [ 1006.884398] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 1006.892526] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 1006.899822] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006dbc2c [ 1006.908465] R13: 00007ffd20ec2dbf R14: 00007fb47f6879c0 R15: 000000000000002d [ 1006.916672] INFO: task syz-executor632:6503 blocked for more than 140 seconds. [ 1006.924866] Not tainted 4.19.142-syzkaller #0 [ 1006.929894] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1006.939218] syz-executor632 D28512 6503 6487 0x00000004 [ 1006.946772] Call Trace: [ 1006.949385] __schedule+0x887/0x2040 [ 1006.955643] ? io_schedule_timeout+0x140/0x140 [ 1006.960264] ? lock_downgrade+0x720/0x720 [ 1006.965667] ? __mutex_lock+0x458/0x1260 [ 1006.969752] schedule+0x8d/0x1b0 [ 1006.974404] schedule_preempt_disabled+0xf/0x20 [ 1006.979115] __mutex_lock+0x647/0x1260 [ 1006.984258] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1006.988711] ? __mutex_add_waiter+0x160/0x160 [ 1006.994557] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1006.998999] ? check_preemption_disabled+0x41/0x280 [ 1007.006121] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1007.010382] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.016152] ? __netlink_lookup+0x3fc/0x730 [ 1007.020530] ? lock_downgrade+0x720/0x720 [ 1007.025950] ? check_preemption_disabled+0x41/0x280 [ 1007.031005] netlink_rcv_skb+0x160/0x440 [ 1007.036518] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.041054] ? netlink_ack+0xae0/0xae0 [ 1007.046285] netlink_unicast+0x4d5/0x690 [ 1007.050398] ? netlink_sendskb+0x110/0x110 [ 1007.055952] netlink_sendmsg+0x6bb/0xc40 [ 1007.060071] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.065337] ? kernel_recvmsg+0x220/0x220 [ 1007.069517] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.074938] sock_sendmsg+0xc3/0x120 [ 1007.078678] ___sys_sendmsg+0x7bb/0x8e0 [ 1007.083967] ? copy_msghdr_from_user+0x440/0x440 [ 1007.088751] ? __fget+0x32f/0x510 [ 1007.093545] ? lock_downgrade+0x720/0x720 [ 1007.097721] ? check_preemption_disabled+0x41/0x280 [ 1007.104033] ? check_preemption_disabled+0x41/0x280 [ 1007.109081] ? __fget+0x356/0x510 [ 1007.113837] ? do_dup2+0x450/0x450 [ 1007.117404] ? __fd_install+0x1b4/0x610 [ 1007.121397] ? __fdget+0x1d0/0x230 [ 1007.127777] __x64_sys_sendmsg+0x132/0x220 [ 1007.133615] ? __sys_sendmsg+0x1b0/0x1b0 [ 1007.137701] ? __se_sys_futex+0x298/0x3b0 [ 1007.143166] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1007.147956] ? trace_hardirqs_off_caller+0x69/0x210 [ 1007.154432] ? do_syscall_64+0x21/0x620 [ 1007.158432] do_syscall_64+0xf9/0x620 [ 1007.163533] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1007.168750] RIP: 0033:0x446dd9 [ 1007.173228] Code: Bad RIP value. [ 1007.176612] RSP: 002b:00007fb47f665db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1007.185610] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446dd9 [ 1007.193761] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 1007.201058] RBP: 00000000006dbc30 R08: 0000000000000003 R09: 0000000000000000 [ 1007.209683] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc3c [ 1007.217820] R13: 00007ffd20ec2dbf R14: 00007fb47f6669c0 R15: 000000000000002d [ 1007.226194] INFO: task syz-executor632:6494 blocked for more than 140 seconds. [ 1007.234432] Not tainted 4.19.142-syzkaller #0 [ 1007.239462] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1007.248779] syz-executor632 D29040 6494 6489 0x00000004 [ 1007.256037] Call Trace: [ 1007.258654] __schedule+0x887/0x2040 [ 1007.264477] ? io_schedule_timeout+0x140/0x140 [ 1007.269103] ? lock_downgrade+0x720/0x720 [ 1007.274506] ? __mutex_lock+0x458/0x1260 [ 1007.278736] schedule+0x8d/0x1b0 [ 1007.283462] schedule_preempt_disabled+0xf/0x20 [ 1007.288180] __mutex_lock+0x647/0x1260 [ 1007.293373] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1007.297805] ? __mutex_add_waiter+0x160/0x160 [ 1007.303685] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1007.308147] ? check_preemption_disabled+0x41/0x280 [ 1007.314425] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1007.318687] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.324489] ? __netlink_lookup+0x3fc/0x730 [ 1007.328836] ? lock_downgrade+0x720/0x720 [ 1007.335385] ? check_preemption_disabled+0x41/0x280 [ 1007.340443] netlink_rcv_skb+0x160/0x440 [ 1007.345884] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.350410] ? netlink_ack+0xae0/0xae0 [ 1007.355657] netlink_unicast+0x4d5/0x690 [ 1007.359748] ? netlink_sendskb+0x110/0x110 [ 1007.365297] netlink_sendmsg+0x6bb/0xc40 [ 1007.369410] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.374653] ? kernel_recvmsg+0x220/0x220 [ 1007.378843] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.384166] sock_sendmsg+0xc3/0x120 [ 1007.387926] ___sys_sendmsg+0x7bb/0x8e0 [ 1007.394064] ? copy_msghdr_from_user+0x440/0x440 [ 1007.398876] ? do_huge_pmd_anonymous_page+0x939/0x1cc0 [ 1007.405531] ? __fget+0x32f/0x510 [ 1007.409035] ? lock_downgrade+0x720/0x720 [ 1007.414457] ? check_preemption_disabled+0x41/0x280 [ 1007.419504] ? check_preemption_disabled+0x41/0x280 [ 1007.425993] ? __fget+0x356/0x510 [ 1007.429483] ? do_dup2+0x450/0x450 [ 1007.434286] ? __fdget+0x1d0/0x230 [ 1007.437852] __x64_sys_sendmsg+0x132/0x220 [ 1007.443388] ? __sys_sendmsg+0x1b0/0x1b0 [ 1007.447486] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1007.453525] ? trace_hardirqs_off_caller+0x69/0x210 [ 1007.458570] ? do_syscall_64+0x21/0x620 [ 1007.463913] do_syscall_64+0xf9/0x620 [ 1007.467747] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1007.474200] RIP: 0033:0x446dd9 [ 1007.477443] Code: Bad RIP value. [ 1007.480807] RSP: 002b:00007fb47f686db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1007.490368] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446dd9 [ 1007.498510] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 1007.506671] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 1007.514783] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006dbc2c [ 1007.523648] R13: 00007ffd20ec2dbf R14: 00007fb47f6879c0 R15: 000000000000002d [ 1007.531042] INFO: task syz-executor632:6504 blocked for more than 140 seconds. [ 1007.541004] Not tainted 4.19.142-syzkaller #0 [ 1007.546877] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1007.556509] syz-executor632 D29040 6504 6489 0x00000004 [ 1007.563063] Call Trace: [ 1007.565674] __schedule+0x887/0x2040 [ 1007.569405] ? io_schedule_timeout+0x140/0x140 [ 1007.575802] ? lock_downgrade+0x720/0x720 [ 1007.580005] ? __mutex_lock+0x458/0x1260 [ 1007.585819] schedule+0x8d/0x1b0 [ 1007.589206] schedule_preempt_disabled+0xf/0x20 [ 1007.595097] __mutex_lock+0x647/0x1260 [ 1007.599015] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1007.604931] ? __mutex_add_waiter+0x160/0x160 [ 1007.609458] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1007.615228] ? check_preemption_disabled+0x41/0x280 [ 1007.620276] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1007.625849] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.631342] ? __netlink_lookup+0x3fc/0x730 [ 1007.637117] ? lock_downgrade+0x720/0x720 [ 1007.641286] ? check_preemption_disabled+0x41/0x280 [ 1007.647657] netlink_rcv_skb+0x160/0x440 [ 1007.653249] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.657798] ? netlink_ack+0xae0/0xae0 [ 1007.663981] netlink_unicast+0x4d5/0x690 [ 1007.668086] ? netlink_sendskb+0x110/0x110 [ 1007.673652] netlink_sendmsg+0x6bb/0xc40 [ 1007.677750] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.683107] ? kernel_recvmsg+0x220/0x220 [ 1007.687350] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.691351] sock_sendmsg+0xc3/0x120 [ 1007.696811] ___sys_sendmsg+0x7bb/0x8e0 [ 1007.700815] ? copy_msghdr_from_user+0x440/0x440 [ 1007.706917] ? __fget+0x32f/0x510 [ 1007.710432] ? lock_downgrade+0x720/0x720 [ 1007.715870] ? check_preemption_disabled+0x41/0x280 [ 1007.720918] ? check_preemption_disabled+0x41/0x280 [ 1007.728504] ? __fget+0x356/0x510 [ 1007.732778] ? do_dup2+0x450/0x450 [ 1007.736359] ? __fd_install+0x1b4/0x610 [ 1007.741063] ? __fdget+0x1d0/0x230 [ 1007.746397] __x64_sys_sendmsg+0x132/0x220 [ 1007.750665] ? __sys_sendmsg+0x1b0/0x1b0 [ 1007.756003] ? __se_sys_futex+0x298/0x3b0 [ 1007.760196] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1007.766297] ? trace_hardirqs_off_caller+0x69/0x210 [ 1007.771345] ? do_syscall_64+0x21/0x620 [ 1007.776622] do_syscall_64+0xf9/0x620 [ 1007.780455] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1007.787741] RIP: 0033:0x446dd9 [ 1007.790993] Code: Bad RIP value. [ 1007.795655] RSP: 002b:00007fb47f665db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1007.804254] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446dd9 [ 1007.811549] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 1007.820118] RBP: 00000000006dbc30 R08: 0000000000000003 R09: 0000000000000000 [ 1007.828313] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc3c [ 1007.836396] R13: 00007ffd20ec2dbf R14: 00007fb47f6669c0 R15: 000000000000002d [ 1007.844595] INFO: task syz-executor632:6505 blocked for more than 140 seconds. [ 1007.852806] Not tainted 4.19.142-syzkaller #0 [ 1007.857856] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1007.867333] syz-executor632 D29040 6505 6485 0x00000004 [ 1007.874659] Call Trace: [ 1007.877295] __schedule+0x887/0x2040 [ 1007.881028] ? io_schedule_timeout+0x140/0x140 [ 1007.887491] ? lock_downgrade+0x720/0x720 [ 1007.892369] ? __mutex_lock+0x458/0x1260 [ 1007.896465] schedule+0x8d/0x1b0 [ 1007.899929] schedule_preempt_disabled+0xf/0x20 [ 1007.906436] __mutex_lock+0x647/0x1260 [ 1007.910357] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1007.916782] ? __mutex_add_waiter+0x160/0x160 [ 1007.921302] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1007.927118] ? check_preemption_disabled+0x41/0x280 [ 1007.934012] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1007.938274] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.944079] ? __netlink_lookup+0x3fc/0x730 [ 1007.948433] ? lock_downgrade+0x720/0x720 [ 1007.953825] ? check_preemption_disabled+0x41/0x280 [ 1007.958877] netlink_rcv_skb+0x160/0x440 [ 1007.964265] ? rtnl_calcit.isra.0+0x430/0x430 [ 1007.968817] ? netlink_ack+0xae0/0xae0 [ 1007.974169] netlink_unicast+0x4d5/0x690 [ 1007.978272] ? netlink_sendskb+0x110/0x110 [ 1007.983864] netlink_sendmsg+0x6bb/0xc40 [ 1007.987962] ? nlmsg_notify+0x1a0/0x1a0 [ 1007.993259] ? kernel_recvmsg+0x220/0x220 [ 1007.997442] ? nlmsg_notify+0x1a0/0x1a0 [ 1008.001428] sock_sendmsg+0xc3/0x120 [ 1008.007005] ___sys_sendmsg+0x7bb/0x8e0 [ 1008.011030] ? copy_msghdr_from_user+0x440/0x440 [ 1008.017073] ? __fget+0x32f/0x510 [ 1008.020559] ? lock_downgrade+0x720/0x720 [ 1008.026030] ? check_preemption_disabled+0x41/0x280 [ 1008.031100] ? check_preemption_disabled+0x41/0x280 [ 1008.037422] ? __fget+0x356/0x510 [ 1008.040899] ? do_dup2+0x450/0x450 [ 1008.046506] ? __fd_install+0x1b4/0x610 [ 1008.050516] ? __fdget+0x1d0/0x230 [ 1008.055422] __x64_sys_sendmsg+0x132/0x220 [ 1008.059707] ? __sys_sendmsg+0x1b0/0x1b0 [ 1008.065102] ? __se_sys_futex+0x298/0x3b0 [ 1008.069282] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1008.075374] ? trace_hardirqs_off_caller+0x69/0x210 [ 1008.080421] ? do_syscall_64+0x21/0x620 [ 1008.085736] do_syscall_64+0xf9/0x620 [ 1008.089561] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1008.095986] RIP: 0033:0x446dd9 [ 1008.099241] Code: Bad RIP value. [ 1008.103912] RSP: 002b:00007fb47f665db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1008.112414] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446dd9 [ 1008.119763] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 1008.129711] RBP: 00000000006dbc30 R08: 0000000000000003 R09: 0000000000000000 [ 1008.137842] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc3c [ 1008.146041] R13: 00007ffd20ec2dbf R14: 00007fb47f6669c0 R15: 000000000000002d [ 1008.154255] INFO: task syz-executor632:6501 blocked for more than 140 seconds. [ 1008.162588] Not tainted 4.19.142-syzkaller #0 [ 1008.167626] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1008.178699] syz-executor632 D29040 6501 6488 0x00000004 [ 1008.186000] Call Trace: [ 1008.188614] __schedule+0x887/0x2040 [ 1008.193616] ? io_schedule_timeout+0x140/0x140 [ 1008.198220] ? lock_downgrade+0x720/0x720 [ 1008.203672] ? __mutex_lock+0x458/0x1260 [ 1008.207762] schedule+0x8d/0x1b0 [ 1008.211163] schedule_preempt_disabled+0xf/0x20 [ 1008.217658] __mutex_lock+0x647/0x1260 [ 1008.222363] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1008.226804] ? __mutex_add_waiter+0x160/0x160 [ 1008.231319] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1008.237511] ? check_preemption_disabled+0x41/0x280 [ 1008.243371] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1008.247647] ? rtnl_calcit.isra.0+0x430/0x430 [ 1008.253450] ? __netlink_lookup+0x3fc/0x730 [ 1008.257804] ? lock_downgrade+0x720/0x720 [ 1008.263218] ? check_preemption_disabled+0x41/0x280 [ 1008.268284] netlink_rcv_skb+0x160/0x440 [ 1008.274655] ? rtnl_calcit.isra.0+0x430/0x430 [ 1008.279198] ? netlink_ack+0xae0/0xae0 [ 1008.284443] netlink_unicast+0x4d5/0x690 [ 1008.288546] ? netlink_sendskb+0x110/0x110 [ 1008.294093] netlink_sendmsg+0x6bb/0xc40 [ 1008.298196] ? nlmsg_notify+0x1a0/0x1a0 [ 1008.304187] ? kernel_recvmsg+0x220/0x220 [ 1008.308455] ? nlmsg_notify+0x1a0/0x1a0 [ 1008.313718] sock_sendmsg+0xc3/0x120 [ 1008.317465] ___sys_sendmsg+0x7bb/0x8e0 [ 1008.321447] ? copy_msghdr_from_user+0x440/0x440 [ 1008.329310] ? do_huge_pmd_anonymous_page+0x939/0x1cc0 [ 1008.335468] ? __fget+0x32f/0x510 [ 1008.338986] ? lock_downgrade+0x720/0x720 [ 1008.344491] ? check_preemption_disabled+0x41/0x280 [ 1008.349545] ? check_preemption_disabled+0x41/0x280 [ 1008.355913] ? __fget+0x356/0x510 [ 1008.359394] ? do_dup2+0x450/0x450 [ 1008.364240] ? __fdget+0x1d0/0x230 [ 1008.367812] __x64_sys_sendmsg+0x132/0x220 [ 1008.373402] ? __sys_sendmsg+0x1b0/0x1b0 [ 1008.377499] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1008.383524] ? trace_hardirqs_off_caller+0x69/0x210 [ 1008.388580] ? do_syscall_64+0x21/0x620 [ 1008.393922] do_syscall_64+0xf9/0x620 [ 1008.397756] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1008.405232] RIP: 0033:0x446dd9 [ 1008.408448] Code: Bad RIP value. [ 1008.413065] RSP: 002b:00007fb47f686db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1008.420803] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446dd9 [ 1008.429431] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 1008.438348] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 1008.446481] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006dbc2c [ 1008.454599] R13: 00007ffd20ec2dbf R14: 00007fb47f6879c0 R15: 000000000000002d [ 1008.462724] INFO: task syz-executor632:6508 blocked for more than 140 seconds. [ 1008.470115] Not tainted 4.19.142-syzkaller #0 [ 1008.476414] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1008.485248] syz-executor632 D29040 6508 6488 0x00000004 [ 1008.490901] Call Trace: [ 1008.495619] __schedule+0x887/0x2040 [ 1008.499381] ? io_schedule_timeout+0x140/0x140 [ 1008.505404] ? lock_downgrade+0x720/0x720 [ 1008.509927] ? __mutex_lock+0x458/0x1260 [ 1008.515249] schedule+0x8d/0x1b0 [ 1008.518641] schedule_preempt_disabled+0xf/0x20 [ 1008.524643] __mutex_lock+0x647/0x1260 [ 1008.528585] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1008.535373] ? __mutex_add_waiter+0x160/0x160 [ 1008.539909] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1008.545577] ? check_preemption_disabled+0x41/0x280 [ 1008.550619] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1008.556096] ? rtnl_calcit.isra.0+0x430/0x430 [ 1008.560611] ? __netlink_lookup+0x3fc/0x730 [ 1008.567082] ? lock_downgrade+0x720/0x720 [ 1008.571250] ? check_preemption_disabled+0x41/0x280 [ 1008.577628] netlink_rcv_skb+0x160/0x440 [ 1008.582444] ? rtnl_calcit.isra.0+0x430/0x430 [ 1008.586957] ? netlink_ack+0xae0/0xae0 [ 1008.590905] netlink_unicast+0x4d5/0x690 [ 1008.596821] ? netlink_sendskb+0x110/0x110 [ 1008.601100] netlink_sendmsg+0x6bb/0xc40 [ 1008.606519] ? nlmsg_notify+0x1a0/0x1a0 [ 1008.610515] ? kernel_recvmsg+0x220/0x220 [ 1008.615944] ? nlmsg_notify+0x1a0/0x1a0 [ 1008.619972] sock_sendmsg+0xc3/0x120 [ 1008.625161] ___sys_sendmsg+0x7bb/0x8e0 [ 1008.629173] ? copy_msghdr_from_user+0x440/0x440 [ 1008.635238] ? __fget+0x32f/0x510 [ 1008.638716] ? lock_downgrade+0x720/0x720 [ 1008.644148] ? check_preemption_disabled+0x41/0x280 [ 1008.649193] ? check_preemption_disabled+0x41/0x280 [ 1008.655618] ? __fget+0x356/0x510 [ 1008.659101] ? do_dup2+0x450/0x450 [ 1008.663994] ? __fd_install+0x1b4/0x610 [ 1008.667993] ? __fdget+0x1d0/0x230 [ 1008.672810] __x64_sys_sendmsg+0x132/0x220 [ 1008.677066] ? __sys_sendmsg+0x1b0/0x1b0 [ 1008.681134] ? __se_sys_futex+0x298/0x3b0 [ 1008.687142] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1008.693395] ? trace_hardirqs_off_caller+0x69/0x210 [ 1008.698450] ? do_syscall_64+0x21/0x620 [ 1008.703788] do_syscall_64+0xf9/0x620 [ 1008.707630] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1008.714085] RIP: 0033:0x446dd9 [ 1008.717307] Code: Bad RIP value. [ 1008.720669] RSP: 002b:00007fb47f665db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1008.731254] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446dd9 [ 1008.739350] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 1008.747481] RBP: 00000000006dbc30 R08: 0000000000000003 R09: 0000000000000000 [ 1008.755569] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc3c [ 1008.763673] R13: 00007ffd20ec2dbf R14: 00007fb47f6669c0 R15: 000000000000002d [ 1008.771082] INFO: task syz-executor632:6499 blocked for more than 140 seconds. [ 1008.779880] Not tainted 4.19.142-syzkaller #0 [ 1008.785721] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1008.795225] syz-executor632 D29040 6499 6486 0x00000004 [ 1008.800883] Call Trace: [ 1008.804793] __schedule+0x887/0x2040 [ 1008.808537] ? io_schedule_timeout+0x140/0x140 [ 1008.814439] ? lock_downgrade+0x720/0x720 [ 1008.818616] ? __mutex_lock+0x458/0x1260 [ 1008.824733] schedule+0x8d/0x1b0 [ 1008.828128] schedule_preempt_disabled+0xf/0x20 [ 1008.834087] __mutex_lock+0x647/0x1260 [ 1008.838009] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1008.843788] ? __mutex_add_waiter+0x160/0x160 [ 1008.848312] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1008.854069] ? check_preemption_disabled+0x41/0x280 [ 1008.859120] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1008.864730] ? rtnl_calcit.isra.0+0x430/0x430 [ 1008.869262] ? __netlink_lookup+0x3fc/0x730 [ 1008.874836] ? lock_downgrade+0x720/0x720 [ 1008.879006] ? check_preemption_disabled+0x41/0x280 [ 1008.885377] netlink_rcv_skb+0x160/0x440 [ 1008.889480] ? rtnl_calcit.isra.0+0x430/0x430 [ 1008.895253] ? netlink_ack+0xae0/0xae0 [ 1008.899184] netlink_unicast+0x4d5/0x690 [ 1008.904554] ? netlink_sendskb+0x110/0x110 [ 1008.908825] netlink_sendmsg+0x6bb/0xc40 [ 1008.914318] ? nlmsg_notify+0x1a0/0x1a0 [ 1008.918350] ? kernel_recvmsg+0x220/0x220 [ 1008.925019] ? nlmsg_notify+0x1a0/0x1a0 [ 1008.929027] sock_sendmsg+0xc3/0x120 [ 1008.934010] ___sys_sendmsg+0x7bb/0x8e0 [ 1008.938016] ? copy_msghdr_from_user+0x440/0x440 [ 1008.944116] ? do_huge_pmd_anonymous_page+0x939/0x1cc0 [ 1008.949429] ? __fget+0x32f/0x510 [ 1008.955018] ? lock_downgrade+0x720/0x720 [ 1008.959231] ? check_preemption_disabled+0x41/0x280 [ 1008.965660] ? check_preemption_disabled+0x41/0x280 [ 1008.970748] ? __fget+0x356/0x510 [ 1008.975595] ? do_dup2+0x450/0x450 [ 1008.979470] ? __fdget+0x1d0/0x230 [ 1008.984439] __x64_sys_sendmsg+0x132/0x220 [ 1008.988716] ? __sys_sendmsg+0x1b0/0x1b0 [ 1008.994150] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1008.999069] ? trace_hardirqs_off_caller+0x69/0x210 [ 1009.005627] ? do_syscall_64+0x21/0x620 [ 1009.009654] do_syscall_64+0xf9/0x620 [ 1009.014806] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1009.020026] RIP: 0033:0x446dd9 [ 1009.024560] Code: Bad RIP value. [ 1009.027937] RSP: 002b:00007fb47f686db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1009.036986] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446dd9 [ 1009.045282] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 1009.053393] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 1009.060690] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006dbc2c [ 1009.069327] R13: 00007ffd20ec2dbf R14: 00007fb47f6879c0 R15: 000000000000002d [ 1009.077501] INFO: task syz-executor632:6507 blocked for more than 140 seconds. [ 1009.086521] Not tainted 4.19.142-syzkaller #0 [ 1009.092326] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1009.100312] syz-executor632 D29040 6507 6486 0x00000004 [ 1009.108228] Call Trace: [ 1009.112545] __schedule+0x887/0x2040 [ 1009.116313] ? io_schedule_timeout+0x140/0x140 [ 1009.120910] ? lock_downgrade+0x720/0x720 [ 1009.126925] ? __mutex_lock+0x458/0x1260 [ 1009.131046] schedule+0x8d/0x1b0 [ 1009.136841] schedule_preempt_disabled+0xf/0x20 [ 1009.142362] __mutex_lock+0x647/0x1260 [ 1009.146280] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.150696] ? __mutex_add_waiter+0x160/0x160 [ 1009.156996] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1009.161431] ? check_preemption_disabled+0x41/0x280 [ 1009.167802] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.172774] ? rtnl_calcit.isra.0+0x430/0x430 [ 1009.177291] ? __netlink_lookup+0x3fc/0x730 [ 1009.183014] ? lock_downgrade+0x720/0x720 [ 1009.187184] ? check_preemption_disabled+0x41/0x280 [ 1009.193499] netlink_rcv_skb+0x160/0x440 [ 1009.197585] ? rtnl_calcit.isra.0+0x430/0x430 [ 1009.203343] ? netlink_ack+0xae0/0xae0 [ 1009.207263] netlink_unicast+0x4d5/0x690 [ 1009.211333] ? netlink_sendskb+0x110/0x110 [ 1009.218047] netlink_sendmsg+0x6bb/0xc40 [ 1009.222885] ? nlmsg_notify+0x1a0/0x1a0 [ 1009.226885] ? kernel_recvmsg+0x220/0x220 [ 1009.231047] ? nlmsg_notify+0x1a0/0x1a0 [ 1009.236798] sock_sendmsg+0xc3/0x120 [ 1009.240541] ___sys_sendmsg+0x7bb/0x8e0 [ 1009.245819] ? copy_msghdr_from_user+0x440/0x440 [ 1009.250605] ? __fget+0x32f/0x510 [ 1009.255357] ? lock_downgrade+0x720/0x720 [ 1009.259562] ? check_preemption_disabled+0x41/0x280 [ 1009.265882] ? check_preemption_disabled+0x41/0x280 [ 1009.270935] ? __fget+0x356/0x510 [ 1009.275683] ? do_dup2+0x450/0x450 [ 1009.279256] ? __fd_install+0x1b4/0x610 [ 1009.284529] ? __fdget+0x1d0/0x230 [ 1009.288113] __x64_sys_sendmsg+0x132/0x220 [ 1009.293631] ? __sys_sendmsg+0x1b0/0x1b0 [ 1009.297717] ? __se_sys_futex+0x298/0x3b0 [ 1009.303203] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1009.307992] ? trace_hardirqs_off_caller+0x69/0x210 [ 1009.314304] ? do_syscall_64+0x21/0x620 [ 1009.318315] do_syscall_64+0xf9/0x620 [ 1009.324535] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1009.329764] RIP: 0033:0x446dd9 [ 1009.334212] Code: Bad RIP value. [ 1009.337584] RSP: 002b:00007fb47f665db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1009.347406] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446dd9 [ 1009.355557] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000004 [ 1009.363685] RBP: 00000000006dbc30 R08: 0000000000000003 R09: 0000000000000000 [ 1009.370987] R10: 0000000000000003 R11: 0000000000000246 R12: 00000000006dbc3c [ 1009.379541] R13: 00007ffd20ec2dbf R14: 00007fb47f6669c0 R15: 000000000000002d [ 1009.387755] INFO: task syz-executor632:6500 blocked for more than 140 seconds. [ 1009.395953] Not tainted 4.19.142-syzkaller #0 [ 1009.400980] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1009.410383] syz-executor632 D28240 6500 6484 0x00000004 [ 1009.416891] Call Trace: [ 1009.419519] __schedule+0x887/0x2040 [ 1009.424542] ? io_schedule_timeout+0x140/0x140 [ 1009.429166] ? lock_downgrade+0x720/0x720 [ 1009.434621] ? __mutex_lock+0x458/0x1260 [ 1009.438716] schedule+0x8d/0x1b0 [ 1009.443475] schedule_preempt_disabled+0xf/0x20 [ 1009.448174] __mutex_lock+0x647/0x1260 [ 1009.453432] ? rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.457907] ? __mutex_add_waiter+0x160/0x160 [ 1009.463715] ? rtnetlink_rcv_msg+0x3c3/0xb80 [ 1009.468173] ? check_preemption_disabled+0x41/0x280 [ 1009.475334] rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.479617] ? rtnl_calcit.isra.0+0x430/0x430 [ 1009.485432] ? __netlink_lookup+0x3fc/0x730 [ 1009.489798] ? lock_downgrade+0x720/0x720 [ 1009.495369] ? check_preemption_disabled+0x41/0x280 [ 1009.500434] netlink_rcv_skb+0x160/0x440 [ 1009.505808] ? rtnl_calcit.isra.0+0x430/0x430 [ 1009.510335] ? netlink_ack+0xae0/0xae0 [ 1009.515508] netlink_unicast+0x4d5/0x690 [ 1009.519601] ? netlink_sendskb+0x110/0x110 [ 1009.525114] netlink_sendmsg+0x6bb/0xc40 [ 1009.529206] ? nlmsg_notify+0x1a0/0x1a0 [ 1009.535589] ? kernel_recvmsg+0x220/0x220 [ 1009.539814] ? nlmsg_notify+0x1a0/0x1a0 [ 1009.545388] sock_sendmsg+0xc3/0x120 [ 1009.549130] ___sys_sendmsg+0x7bb/0x8e0 [ 1009.554344] ? copy_msghdr_from_user+0x440/0x440 [ 1009.559159] ? do_huge_pmd_anonymous_page+0x939/0x1cc0 [ 1009.565762] ? __fget+0x32f/0x510 [ 1009.569244] ? lock_downgrade+0x720/0x720 [ 1009.574688] ? check_preemption_disabled+0x41/0x280 [ 1009.579735] ? check_preemption_disabled+0x41/0x280 [ 1009.586468] ? __fget+0x356/0x510 [ 1009.589958] ? do_dup2+0x450/0x450 [ 1009.594742] ? __fdget+0x1d0/0x230 [ 1009.598322] __x64_sys_sendmsg+0x132/0x220 [ 1009.604604] ? __sys_sendmsg+0x1b0/0x1b0 [ 1009.608710] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1009.614766] ? trace_hardirqs_off_caller+0x69/0x210 [ 1009.619811] ? do_syscall_64+0x21/0x620 [ 1009.625083] do_syscall_64+0xf9/0x620 [ 1009.628941] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1009.635405] RIP: 0033:0x446dd9 [ 1009.638637] Code: Bad RIP value. [ 1009.643258] RSP: 002b:00007fb47f686db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1009.650991] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446dd9 [ 1009.659530] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 1009.667674] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 1009.675766] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006dbc2c [ 1009.683907] R13: 00007ffd20ec2dbf R14: 00007fb47f6879c0 R15: 000000000000002d [ 1009.691258] [ 1009.691258] Showing all locks held in the system: [ 1009.699100] 1 lock held by khungtaskd/1090: [ 1009.704383] #0: 000000001f708b1c (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 1009.714648] 1 lock held by in:imklog/6139: [ 1009.718897] #0: 0000000044c57732 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 1009.728248] 3 locks held by kworker/0:0/6476: [ 1009.734258] #0: 00000000e98075ac ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 [ 1009.745523] #1: 00000000d5fe9b4a ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 [ 1009.756511] #2: 0000000017c257a3 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 [ 1009.765634] 1 lock held by syz-executor632/6493: [ 1009.770401] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: tcf_ife_init+0x105b/0x1730 [ 1009.779550] 1 lock held by syz-executor632/6503: [ 1009.785063] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.794137] 1 lock held by syz-executor632/6494: [ 1009.798908] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.808408] 1 lock held by syz-executor632/6504: [ 1009.813952] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.822937] 1 lock held by syz-executor632/6496: [ 1009.827737] 1 lock held by syz-executor632/6505: [ 1009.833802] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.842803] 1 lock held by syz-executor632/6501: [ 1009.847578] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.857072] 1 lock held by syz-executor632/6508: [ 1009.863334] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.871526] 1 lock held by syz-executor632/6499: [ 1009.877567] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.886603] 1 lock held by syz-executor632/6507: [ 1009.891386] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.900874] 1 lock held by syz-executor632/6500: [ 1009.906447] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.915425] 1 lock held by syz-executor632/6506: [ 1009.920195] #0: 0000000017c257a3 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 [ 1009.929750] [ 1009.931384] ============================================= [ 1009.931384] [ 1009.940501] NMI backtrace for cpu 1 [ 1009.944317] CPU: 1 PID: 1090 Comm: khungtaskd Not tainted 4.19.142-syzkaller #0 [ 1009.951779] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1009.961166] Call Trace: [ 1009.963860] dump_stack+0x1fc/0x2fe [ 1009.967506] nmi_cpu_backtrace.cold+0x63/0xa2 [ 1009.972026] ? lapic_can_unplug_cpu.cold+0x39/0x39 [ 1009.976968] nmi_trigger_cpumask_backtrace+0x1a6/0x1eb [ 1009.982283] watchdog+0x991/0xe60 [ 1009.985747] ? reset_hung_task_detector+0x30/0x30 [ 1009.990601] kthread+0x33f/0x460 [ 1009.993977] ? kthread_park+0x180/0x180 [ 1009.997986] ret_from_fork+0x24/0x30 [ 1010.001918] Sending NMI from CPU 1 to CPUs 0: [ 1010.007368] NMI backtrace for cpu 0 [ 1010.007375] CPU: 0 PID: 6496 Comm: syz-executor632 Not tainted 4.19.142-syzkaller #0 [ 1010.007381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1010.007386] RIP: 0010:__radix_tree_lookup+0x1c/0x370 [ 1010.007397] Code: e8 09 26 68 fa e9 0a fe ff ff 0f 1f 40 00 41 57 48 8d 47 40 41 56 49 be 00 00 00 00 00 fc ff df 41 55 41 54 55 53 48 83 ec 40 <48> 89 44 24 38 48 89 44 24 30 48 c1 e8 03 4c 01 f0 48 89 7c 24 10 [ 1010.007401] RSP: 0018:ffff8880a7adeeb8 EFLAGS: 00000286 [ 1010.007410] RAX: ffff88821605a178 RBX: 0000000000001206 RCX: 0000000000000000 [ 1010.007415] RDX: 0000000000000000 RSI: 0000000000001206 RDI: ffff88821605a138 [ 1010.007420] RBP: ffff8880a7adeff0 R08: 0000000000000001 R09: 0000000000000000 [ 1010.007425] R10: 0000000000000005 R11: 00000000a00fb921 R12: ffff8880a7adf168 [ 1010.007431] R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88821605a138 [ 1010.007437] FS: 00007fb47f687700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 1010.007441] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1010.007447] CR2: 00007fefd803c0b8 CR3: 000000009dce0000 CR4: 00000000001406f0 [ 1010.007452] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1010.007457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1010.007460] Call Trace: [ 1010.007464] tcf_idr_check_alloc+0xab/0x320 [ 1010.007468] tcf_ife_init+0x38e/0x1730 [ 1010.007472] ? vprintk_func+0x81/0x17e [ 1010.007476] ? ife_get_meta_u16+0x180/0x180 [ 1010.007480] ? tc_lookup_action_n+0xcd/0xf0 [ 1010.007484] tcf_action_init_1+0x93e/0xbf0 [ 1010.007488] ? tcf_action_dump_old+0x80/0x80 [ 1010.007492] ? __lock_acquire+0x6de/0x3ff0 [ 1010.007495] ? memset+0x20/0x40 [ 1010.007499] tcf_action_init+0x26e/0x3b0 [ 1010.007503] ? tcf_action_init_1+0xbf0/0xbf0 [ 1010.007507] ? avc_has_perm_noaudit+0x1ec/0x390 [ 1010.007511] tcf_action_add+0xd9/0x360 [ 1010.007521] ? tca_action_gd+0x1550/0x1550 [ 1010.007525] ? memset+0x20/0x40 [ 1010.007529] ? nla_parse+0x1b2/0x290 [ 1010.007532] tc_ctl_action+0x327/0x407 [ 1010.007536] ? tcf_action_add+0x360/0x360 [ 1010.007540] ? tcf_action_add+0x360/0x360 [ 1010.007544] rtnetlink_rcv_msg+0x453/0xb80 [ 1010.007548] ? rtnl_calcit.isra.0+0x430/0x430 [ 1010.007552] ? __netlink_lookup+0x3fc/0x730 [ 1010.007556] ? lock_downgrade+0x720/0x720 [ 1010.007560] ? check_preemption_disabled+0x41/0x280 [ 1010.007564] netlink_rcv_skb+0x160/0x440 [ 1010.007568] ? rtnl_calcit.isra.0+0x430/0x430 [ 1010.007572] ? netlink_ack+0xae0/0xae0 [ 1010.007576] netlink_unicast+0x4d5/0x690 [ 1010.007580] ? netlink_sendskb+0x110/0x110 [ 1010.007583] netlink_sendmsg+0x6bb/0xc40 [ 1010.007587] ? nlmsg_notify+0x1a0/0x1a0 [ 1010.007591] ? kernel_recvmsg+0x220/0x220 [ 1010.007595] ? nlmsg_notify+0x1a0/0x1a0 [ 1010.007598] sock_sendmsg+0xc3/0x120 [ 1010.007602] ___sys_sendmsg+0x7bb/0x8e0 [ 1010.007606] ? copy_msghdr_from_user+0x440/0x440 [ 1010.007611] ? do_huge_pmd_anonymous_page+0x939/0x1cc0 [ 1010.007615] ? __fget+0x32f/0x510 [ 1010.007618] ? lock_downgrade+0x720/0x720 [ 1010.007623] ? check_preemption_disabled+0x41/0x280 [ 1010.007627] ? check_preemption_disabled+0x41/0x280 [ 1010.007631] ? __fget+0x356/0x510 [ 1010.007635] ? do_dup2+0x450/0x450 [ 1010.007638] ? __fdget+0x1d0/0x230 [ 1010.007642] __x64_sys_sendmsg+0x132/0x220 [ 1010.007646] ? __sys_sendmsg+0x1b0/0x1b0 [ 1010.007649] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1010.007653] ? trace_hardirqs_off_caller+0x69/0x210 [ 1010.007657] ? do_syscall_64+0x21/0x620 [ 1010.007660] do_syscall_64+0xf9/0x620 [ 1010.007663] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1010.007665] RIP: 0033:0x446dd9 [ 1010.007673] Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 db 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1010.007675] RSP: 002b:00007fb47f686db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1010.007681] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446dd9 [ 1010.007684] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 1010.007687] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 1010.007690] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006dbc2c [ 1010.007693] R13: 00007ffd20ec2dbf R14: 00007fb47f6879c0 R15: 000000000000002d [ 1010.051806] Kernel panic - not syncing: hung_task: blocked tasks [ 1010.419006] CPU: 1 PID: 1090 Comm: khungtaskd Not tainted 4.19.142-syzkaller #0 [ 1010.426464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1010.435846] Call Trace: [ 1010.438475] dump_stack+0x1fc/0x2fe [ 1010.443073] panic+0x26a/0x50e [ 1010.446332] ? __warn_printk+0xf3/0xf3 [ 1010.450344] ? lapic_can_unplug_cpu.cold+0x39/0x39 [ 1010.455298] ? ___preempt_schedule+0x16/0x18 [ 1010.459728] ? watchdog+0x991/0xe60 [ 1010.463370] ? nmi_trigger_cpumask_backtrace+0x15e/0x1eb [ 1010.469368] watchdog+0x9a2/0xe60 [ 1010.472842] ? reset_hung_task_detector+0x30/0x30 [ 1010.477702] kthread+0x33f/0x460 [ 1010.481089] ? kthread_park+0x180/0x180 [ 1010.485085] ret_from_fork+0x24/0x30 [ 1010.490177] Kernel Offset: disabled [ 1010.493847] Rebooting in 86400 seconds..