INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-next-kasan-gce-5,10.128.0.7' (ECDSA) to the list of known hosts. net.ipv6.conf.syz2.accept_dad = 0 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz7.accept_dad = 0 net.ipv6.conf.syz6.accept_dad = 0 net.ipv6.conf.syz4.accept_dad = 0 net.ipv6.conf.syz1.accept_dad = 0 net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz3.accept_dad = 0 net.ipv6.conf.syz2.router_solicitations = 0 net.ipv6.conf.syz0.router_solicitations = 0 net.ipv6.conf.syz6.router_solicitations = 0 net.ipv6.conf.syz7.router_solicitations = 0 net.ipv6.conf.syz5.router_solicitations = 0 net.ipv6.conf.syz1.router_solicitations = 0 net.ipv6.conf.syz4.router_solicitations = 0 net.ipv6.conf.syz3.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 55.472047] WARNING: kernel stack regs at ffff8801c55df878 in syzkaller180141:14445 has bad 'bp' value ffffffff85749940 [ 55.472054] unwind stack type:0 next_sp: (null) mask:0x6 graph_idx:0 [ 55.472064] ffff8801db2076f0: ffff8801db207778 (0xffff8801db207778) [ 55.472076] ffff8801db2076f8: ffffffff8127eaae (__save_stack_trace+0x6e/0xd0) [ 55.472080] ffff8801db207700: 0000000000000000 ... [ 55.472086] ffff8801db207708: ffff8801c55d8000 (0xffff8801c55d8000) [ 55.472093] ffff8801db207710: ffff8801c55e0000 (0xffff8801c55e0000) [ 55.472097] ffff8801db207718: 0000000000000000 ... [ 55.472103] ffff8801db207720: 0000000000000006 (0x6) [ 55.472109] ffff8801db207728: ffff8801c6240440 (0xffff8801c6240440) [ 55.472115] ffff8801db207730: 0000010100000000 (0x10100000000) [ 55.472119] ffff8801db207738: 0000000000000000 ... [ 55.472126] ffff8801db207740: ffff8801db2076f0 (0xffff8801db2076f0) [ 55.472135] ffff8801db207748: ffffffff81383d83 (loop1+0x5b3/0x88a) [ 55.472141] ffff8801db207750: ffff8801c55df878 (0xffff8801c55df878) [ 55.472147] ffff8801db207758: 0000000001000000 (0x1000000) [ 55.472154] ffff8801db207760: ffff8801c1645480 (0xffff8801c1645480) [ 55.472160] ffff8801db207768: ffff8801c16454d0 (0xffff8801c16454d0) [ 55.472168] ffff8801db207770: ffffffff81477097 (put_pid+0x177/0x1f0) [ 55.472173] ffff8801db207778: ffff8801db207788 (0xffff8801db207788) [ 55.472177] ffff8801db207780: ffffffff8127eb26 (save_stack_trace+0x16/0x20) [ 55.472181] ffff8801db207788: ffff8801db2079b8 (0xffff8801db2079b8) [ 55.472188] ffff8801db207790: ffffffff81a26a63 (save_stack+0x43/0xd0) [ 55.472191] ffff8801db207798: 000000400000000c (0x400000000c) [ 55.472194] ffff8801db2077a0: ffff8801db2077b0 (0xffff8801db2077b0) [ 55.472197] ffff8801db2077a8: 0000000000000000 ... [ 55.472201] ffff8801db2077b0: ffffffff8127eb26 (save_stack_trace+0x16/0x20) [ 55.472205] ffff8801db2077b8: ffffffff81a26a63 (save_stack+0x43/0xd0) [ 55.472209] ffff8801db2077c0: ffffffff81a27371 (kasan_slab_free+0x71/0xc0) [ 55.472214] ffff8801db2077c8: ffffffff81a24487 (kmem_cache_free+0x77/0x280) [ 55.472218] ffff8801db2077d0: ffffffff81477097 (put_pid+0x177/0x1f0) [ 55.472222] ffff8801db2077d8: ffffffff81477126 (delayed_put_pid+0x16/0x20) [ 55.472228] ffff8801db2077e0: ffffffff815c164e (rcu_process_callbacks+0xd3e/0x17b0) [ 55.472233] ffff8801db2077e8: ffffffff84dabd3d (__do_softirq+0x2bd/0xbd4) [ 55.472238] ffff8801db2077f0: ffffffff814168e3 (irq_exit+0x1d3/0x210) [ 55.472243] ffff8801db2077f8: ffffffff84daa416 (smp_apic_timer_interrupt+0x76/0xa0) [ 55.472247] ffff8801db207800: ffffffff84da5bbd (apic_timer_interrupt+0x9d/0xb0) [ 55.472251] ffff8801db207808: ffffffff81383d83 (loop1+0x5b3/0x88a) [ 55.472255] ffff8801db207810: 1ffff1003b640f03 (0x1ffff1003b640f03) [ 55.472261] ffff8801db207818: 0000000041b58ab3 (0x41b58ab3) [ 55.472269] ffff8801db207820: ffffffff85751ada (K512_4+0x6ada/0x87170) [ 55.472278] ffff8801db207828: ffffffff8155fa50 (do_raw_spin_trylock+0x190/0x190) [ 55.472285] ffff8801db207830: ffffffff85751378 (K512_4+0x6378/0x87170) [ 55.472294] ffff8801db207838: ffffffff8153ea00 (__bfs+0x6f0/0x750) [ 55.472306] ffff8801db207840: ffff8801c6240440 (0xffff8801c6240440) [ 55.472312] ffff8801db207848: 0000000041b58ab3 (0x41b58ab3) [ 55.472323] ffff8801db207850: ffffffff85751570 (K512_4+0x6570/0x87170) [ 55.472331] ffff8801db207858: ffffffff81549d70 (print_usage_bug+0x480/0x480) [ 55.472338] ffff8801db207860: ffff8801c6240cd8 (0xffff8801c6240cd8) [ 55.472344] ffff8801db207868: ffff8801db2078b0 (0xffff8801db2078b0) [ 55.472352] ffff8801db207870: ffffffff8154b1f2 (mark_held_locks+0xb2/0x100) [ 55.472358] ffff8801db207878: 0000000000000001 (0x1) [ 55.472364] ffff8801db207880: ffff880100000002 (0xffff880100000002) [ 55.472370] ffff8801db207888: ffff8801c6240440 (0xffff8801c6240440) [ 55.472380] ffff8801db207890: ffffffff84da40a1 (_raw_spin_unlock_irqrestore+0x31/0xba) [ 55.472386] ffff8801db207898: dffffc0000000000 (0xdffffc0000000000) [ 55.472392] ffff8801db2078a0: dffffc0000000000 (0xdffffc0000000000) [ 55.472402] ffff8801db2078a8: ffffffff85b3be80 (rcu_bh_varname+0x60/0x60) [ 55.472408] ffff8801db2078b0: ffff8801db2078d0 (0xffff8801db2078d0) [ 55.472417] ffff8801db2078b8: ffffffff8154b3de (trace_hardirqs_on_caller+0x19e/0x5c0) [ 55.472423] ffff8801db2078c0: 0000000000000286 (0x286) [ 55.472430] ffff8801db2078c8: ffffffff85b3be80 (rcu_bh_varname+0x60/0x60) [ 55.472437] ffff8801db2078d0: ffff8801db2078e0 (0xffff8801db2078e0) [ 55.472445] ffff8801db2078d8: ffffffff8154b80d (trace_hardirqs_on+0xd/0x10) [ 55.472452] ffff8801db2078e0: ffff8801db207900 (0xffff8801db207900) [ 55.472457] ffff8801db2078e8: 0000000000000286 (0x286) [ 55.472462] ffff8801db2078f0: 0000000000000002 (0x2) [ 55.472483] ffff8801db2078f8: ffffffff85b3bed0 (rcu_sched_state+0x50/0x1720) [ 55.472490] ffff8801db207900: 1ffff1003b640f28 (0x1ffff1003b640f28) [ 55.472496] ffff8801db207908: ffff8801db207918 (0xffff8801db207918) [ 55.472505] ffff8801db207910: ffffffff815ab137 (debug_lockdep_rcu_enabled+0x77/0x90) [ 55.472511] ffff8801db207918: ffff8801db207ac8 (0xffff8801db207ac8) [ 55.472517] ffff8801db207920: 0000000000000086 (0x86) [ 55.472524] ffff8801db207928: ffffffff85b3be80 (rcu_bh_varname+0x60/0x60) [ 55.472530] ffff8801db207930: 0000000000000286 (0x286) [ 55.472536] ffff8801db207938: 00000000000022b8 (0x22b8) [ 55.472542] ffff8801db207940: 0000000041b58ab3 (0x41b58ab3) [ 55.472550] ffff8801db207948: ffffffff857445d0 (inat_primary_table+0x2532f0/0x257f90) [ 55.472559] ffff8801db207950: ffffffff815be6b0 (cond_synchronize_sched+0xc0/0xc0) [ 55.472565] ffff8801db207958: 0000000000000086 (0x86) [ 55.472572] ffff8801db207960: ffff8801c6240440 (0xffff8801c6240440) [ 55.472580] ffff8801db207968: ffffffff85b3be98 (rcu_sched_state+0x18/0x1720) [ 55.472585] ffff8801db207970: 0000000000000086 (0x86) [ 55.472591] ffff8801db207978: ffff8801c6240d48 (0xffff8801c6240d48) [ 55.472598] ffff8801db207980: ffff8801c1645480 (0xffff8801c1645480) [ 55.472604] ffff8801db207988: ffff8801c6240440 (0xffff8801c6240440) [ 55.472611] ffff8801db207990: ffff8801db2079e0 (0xffff8801db2079e0) [ 55.472620] ffff8801db207998: ffffffff8154c168 (debug_check_no_locks_freed+0x268/0x3d0) [ 55.472628] ffff8801db2079a0: ffffffff81552d15 (lock_acquire+0x1d5/0x580) [ 55.472633] ffff8801db2079a8: 0000000000000000 ... [ 55.472644] ffff8801db2079b0: ffff8801dac10ac0 (0xffff8801dac10ac0) [ 55.472650] ffff8801db2079b8: ffff8801db2079e0 (0xffff8801db2079e0) [ 55.472657] ffff8801db2079c0: ffffffff81a27371 (kasan_slab_free+0x71/0xc0) [ 55.472664] ffff8801db2079c8: ffff8801c1645480 (0xffff8801c1645480) [ 55.472670] ffff8801db2079d0: ffff8801dac10ac0 (0xffff8801dac10ac0) [ 55.472676] ffff8801db2079d8: 0000000000000286 (0x286) [ 55.472682] ffff8801db2079e0: ffff8801db207a10 (0xffff8801db207a10) [ 55.472690] ffff8801db2079e8: ffffffff81a24487 (kmem_cache_free+0x77/0x280) [ 55.472697] ffff8801db2079f0: ffff8801c1645480 (0xffff8801c1645480) [ 55.472703] ffff8801db2079f8: 1ffff1003b640f45 (0x1ffff1003b640f45) [ 55.472710] ffff8801db207a00: 1ffff1003b640f49 (0x1ffff1003b640f49) [ 55.472716] ffff8801db207a08: ffff8801db207a88 (0xffff8801db207a88) [ 55.472722] ffff8801db207a10: ffff8801db207ab0 (0xffff8801db207ab0) [ 55.472730] ffff8801db207a18: ffffffff81477097 (put_pid+0x177/0x1f0) [ 55.472735] ffff8801db207a20: 00000000000022b8 (0x22b8) [ 55.472742] ffff8801db207a28: 0000000041b58ab3 (0x41b58ab3) [ 55.472750] ffff8801db207a30: ffffffff85737a52 (inat_primary_table+0x246772/0x257f90) [ 55.472757] ffff8801db207a38: ffffffff81476f20 (task_active_pid_ns+0xd0/0xd0) [ 55.472763] ffff8801db207a40: dffffc0000000000 (0xdffffc0000000000) [ 55.472770] ffff8801db207a48: ffff880100000001 (0xffff880100000001) [ 55.472776] ffff8801db207a50: ffff8801db207a98 (0xffff8801db207a98) [ 55.472780] ffff8801db207a58: 0000000000000000 ... [ 55.472786] ffff8801db207a60: 00000000000022b7 (0x22b7) [ 55.472792] ffff8801db207a68: ffffffff00000002 (0xffffffff00000002) [ 55.472798] ffff8801db207a70: ffff8801c6240440 (0xffff8801c6240440) [ 55.472807] ffff8801db207a78: ffffffff815c1a26 (rcu_process_callbacks+0x1116/0x17b0) [ 55.472815] ffff8801db207a80: ffffffff85b3be80 (rcu_bh_varname+0x60/0x60) [ 55.472821] ffff8801db207a88: ffff8801c16454a0 (0xffff8801c16454a0) [ 55.472827] ffff8801db207a90: ffff8801db207d48 (0xffff8801db207d48) [ 55.472834] ffff8801db207a98: ffff8801c16454a8 (0xffff8801c16454a8) [ 55.472840] ffff8801db207aa0: dffffc0000000000 (0xdffffc0000000000) [ 55.472846] ffff8801db207aa8: ffff8801db207d88 (0xffff8801db207d88) [ 55.472853] ffff8801db207ab0: ffff8801db207ac8 (0xffff8801db207ac8) [ 55.472860] ffff8801db207ab8: ffffffff81477126 (delayed_put_pid+0x16/0x20) [ 55.472867] ffff8801db207ac0: ffff8801c16454a0 (0xffff8801c16454a0) [ 55.472873] ffff8801db207ac8: ffff8801db207db0 (0xffff8801db207db0) [ 55.472882] ffff8801db207ad0: ffffffff815c164e (rcu_process_callbacks+0xd3e/0x17b0) [ 55.472888] ffff8801db207ad8: ffff8801db226980 (0xffff8801db226980) [ 55.472895] ffff8801db207ae0: ffffffff85b3be80 (rcu_bh_varname+0x60/0x60) [ 55.472904] ffff8801db207ae8: ffffffff85ac97a8 (pv_irq_ops+0x8/0x60) [ 55.472910] ffff8801db207af0: ffff8801db226a30 (0xffff8801db226a30) [ 55.472915] ffff8801db207af8: 000000000000000a (0xa) [ 55.472922] ffff8801db207b00: ffffed0038c48088 (0xffffed0038c48088) [ 55.472934] ffff8801db207b08: ffff8801c6240440 (0xffff8801c6240440) [ 55.472941] ffff8801db207b10: ffffffff81477110 (put_pid+0x1f0/0x1f0) [ 55.472948] ffff8801db207b18: 1ffff1003b640f65 (0x1ffff1003b640f65) [ 55.472954] ffff8801db207b20: ffff8801db2269b8 (0xffff8801db2269b8) [ 55.472960] ffff8801db207b28: 0000000041b58ab3 (0x41b58ab3) [ 55.472968] ffff8801db207b30: ffffffff857538d8 (K512_4+0x88d8/0x87170) [ 55.472976] ffff8801db207b38: ffffffff815c0910 (note_gp_changes+0x650/0x650) [ 55.472984] ffff8801db207b40: ffffffff81549d70 (print_usage_bug+0x480/0x480) [ 55.472993] ffff8801db207b48: ffffffff84d6c919 (timerqueue_add+0x1e9/0x280) [ 55.473000] ffff8801db207b50: ffff8801db21db98 (0xffff8801db21db98) [ 55.473006] ffff8801db207b58: ffff8801db21d590 (0xffff8801db21d590) [ 55.473012] ffff8801db207b60: 1ffff1003b640f80 (0x1ffff1003b640f80) [ 55.473017] ffff8801db207b68: 0000000000000001 (0x1) [ 55.473035] ffff8801db207b70: ffff8801c6240d08 (0xffff8801c6240d08) [ 55.473042] ffff8801db207b78: ffffffff8707dcc8 (tk_core+0x8/0x140) [ 55.473049] ffff8801db207b80: ffff8801db207c60 (0xffff8801db207c60) [ 55.473054] ffff8801db207b88: ffff8801db207bc8 (0xffff8801db207bc8) [ 55.473062] ffff8801db207b90: ffffffff8153f4a9 (find_held_lock+0x39/0x1d0) [ 55.473081] ffff8801db207b98: ffffffff00000002 (0xffffffff00000002) [ 55.473087] ffff8801db207ba0: 1ffff1003b640f80 (0x1ffff1003b640f80) [ 55.473093] ffff8801db207ba8: ffff8801db207c60 (0xffff8801db207c60) [ 55.473099] ffff8801db207bb0: ffff8801db207d60 (0xffff8801db207d60)