INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[ 10.336140] audit: type=1400 audit(1514122562.044:5): avc: denied { syslog } for pid=2994 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c[ 11.318871] audit: type=1400 audit(1514122563.027:6): avc: denied { map } for pid=3110 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 . Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-next-kasan-gce-8,10.128.0.19' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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: [ 17.545847] audit: type=1400 audit(1514122569.254:7): avc: denied { map } for pid=3147 comm="syzkaller336925" path="/root/syzkaller336925920" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 28.146239] ================================================================== [ 28.153701] BUG: KASAN: double-free or invalid-free in skb_free_head+0x74/0xb0 [ 28.161028] [ 28.162631] CPU: 1 PID: 3144 Comm: sshd Not tainted 4.15.0-rc4-next-20171221+ #78 [ 28.170216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.179547] Call Trace: [ 28.182106] dump_stack+0x194/0x257 [ 28.185706] ? arch_local_irq_restore+0x53/0x53 [ 28.190432] ? show_regs_print_info+0x18/0x18 [ 28.194896] ? check_noncircular+0x20/0x20 [ 28.199112] ? print_irqtrace_events+0x270/0x270 [ 28.203849] ? skb_free_head+0x74/0xb0 [ 28.207706] print_address_description+0x73/0x250 [ 28.212515] ? skb_free_head+0x74/0xb0 [ 28.216371] ? skb_free_head+0x74/0xb0 [ 28.220226] kasan_report_double_free+0x55/0x80 [ 28.224865] kasan_slab_free+0xa3/0xc0 [ 28.228723] kfree+0xd6/0x260 [ 28.231800] skb_free_head+0x74/0xb0 [ 28.235486] skb_release_data+0x58c/0x790 [ 28.239609] ? skb_tx_error+0x2c0/0x2c0 [ 28.243549] ? check_noncircular+0x20/0x20 [ 28.247754] ? __lock_is_held+0xb6/0x140 [ 28.251799] skb_release_all+0x4a/0x60 [ 28.255656] consume_skb+0x153/0x490 [ 28.259344] ? alloc_skb_with_frags+0x750/0x750 [ 28.263987] ? virtqueue_get_buf_ctx+0x3b1/0x8b0 [ 28.268717] ? detach_buf+0x6a0/0x6a0 [ 28.272497] __dev_kfree_skb_any+0x85/0xa0 [ 28.276701] free_old_xmit_skbs.isra.27+0x15a/0x2c0 [ 28.281690] ? virtnet_cpu_down_prep+0x80/0x80 [ 28.286242] ? packet_rcv_fanout+0x7d0/0x7d0 [ 28.290622] ? dev_queue_xmit_nit+0x8af/0xc40 [ 28.295093] start_xmit+0x1b9/0x1650 [ 28.298783] ? virtnet_xdp+0x12a0/0x12a0 [ 28.302826] dev_hard_start_xmit+0x248/0xac0 [ 28.307211] ? validate_xmit_skb_list+0x120/0x120 [ 28.312032] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 28.317197] ? lock_acquire+0x1d5/0x580 [ 28.321141] ? lock_acquire+0x1d5/0x580 [ 28.325084] ? sch_direct_xmit+0x24d/0x920 [ 28.329302] ? skb_csum_hwoffload_help+0x57/0xa0 [ 28.334044] ? lock_release+0xa40/0xa40 [ 28.337990] ? netif_skb_features+0x8e0/0x8e0 [ 28.342457] ? mark_held_locks+0xaf/0x100 [ 28.346583] sch_direct_xmit+0x2e0/0x920 [ 28.350616] ? pfifo_fast_reset+0x490/0x490 [ 28.354916] __qdisc_run+0x571/0x1930 [ 28.358696] ? sch_direct_xmit+0x920/0x920 [ 28.362898] ? lock_release+0xa40/0xa40 [ 28.366850] ? rcu_lockdep_current_cpu_online+0x26/0x190 [ 28.372278] ? pfifo_fast_enqueue+0x2a0/0x420 [ 28.376748] __dev_queue_xmit+0x89e/0x2200 [ 28.380960] ? netdev_pick_tx+0x300/0x300 [ 28.385084] ? check_noncircular+0x20/0x20 [ 28.389287] ? lock_downgrade+0x980/0x980 [ 28.393406] ? lock_release+0xa40/0xa40 [ 28.397362] ? __lock_acquire+0x664/0x3e00 [ 28.401576] ? print_irqtrace_events+0x270/0x270 [ 28.406307] ? ip_finish_output+0x85e/0xd10 [ 28.410599] ? netlbl_catmap_setrng+0xb0/0xb0 [ 28.415075] ? mark_held_locks+0xaf/0x100 [ 28.419192] ? ip_finish_output2+0xca0/0x1460 [ 28.423659] dev_queue_xmit+0x17/0x20 [ 28.427427] ip_finish_output2+0xec8/0x1460 [ 28.431723] ? dst_output+0x140/0x140 [ 28.435502] ? __local_bh_enable_ip+0x121/0x230 [ 28.440142] ? ipt_do_table+0xdcd/0x13a0 [ 28.444171] ? __local_bh_enable_ip+0x121/0x230 [ 28.448817] ? ipv4_mtu+0x28c/0x3d0 [ 28.452428] ? __lock_is_held+0xb6/0x140 [ 28.456467] ip_finish_output+0x85e/0xd10 [ 28.460580] ? ip_finish_output+0x85e/0xd10 [ 28.464874] ? ip_fragment.constprop.49+0x200/0x200 [ 28.469858] ? iptable_mangle_hook+0xa9/0x550 [ 28.474331] ? nf_hook_slow+0xd3/0x1a0 [ 28.478193] ip_output+0x1cc/0x860 [ 28.481703] ? ip_mc_output+0x1340/0x1340 [ 28.485830] ? ip_fragment.constprop.49+0x200/0x200 [ 28.490822] ip_local_out+0x95/0x160 [ 28.494506] ip_queue_xmit+0x8c0/0x18e0 [ 28.498456] ? ip_build_and_send_pkt+0xc30/0xc30 [ 28.503183] ? refcount_dec_if_one+0x20/0x20 [ 28.507563] ? __tcp_v4_send_check+0x1b8/0x350 [ 28.512112] ? tcp_options_write+0x228/0x940 [ 28.516495] tcp_transmit_skb+0x1b12/0x38b0 [ 28.520797] ? bictcp_cong_avoid+0xf20/0xf20 [ 28.525176] ? __tcp_select_window+0x900/0x900 [ 28.529731] ? __kernel_text_address+0xd/0x40 [ 28.534196] ? __lock_acquire+0x664/0x3e00 [ 28.538416] ? tcp_small_queue_check.isra.26+0x31c/0x450 [ 28.543835] ? tcp_tso_segs+0x240/0x240 [ 28.547778] ? pvclock_read_flags+0x160/0x160 [ 28.552241] ? inet_sendmsg+0x11f/0x5e0 [ 28.556186] ? sock_sendmsg+0xca/0x110 [ 28.560043] ? sock_write_iter+0x31a/0x5d0 [ 28.564247] ? __vfs_write+0x684/0x970 [ 28.568102] ? vfs_write+0x189/0x510 [ 28.571781] ? SyS_write+0xef/0x220 [ 28.575375] ? entry_SYSCALL_64_fastpath+0x1f/0x96 [ 28.580281] ? sched_clock_cpu+0x1b/0x170 [ 28.584397] ? tcp_init_tso_segs+0x114/0x1f0 [ 28.588775] tcp_write_xmit+0x680/0x5190 [ 28.592816] ? rcu_read_lock_sched_held+0x58/0x120 [ 28.597718] ? tcp_transmit_skb+0x38b0/0x38b0 [ 28.602182] ? __asan_register_globals+0x90/0xa0 [ 28.606918] ? find_held_lock+0x35/0x1d0 [ 28.610955] ? __might_fault+0x110/0x1d0 [ 28.614990] ? iov_iter_advance+0x2a1/0x13f0 [ 28.619373] ? lock_release+0xa40/0xa40 [ 28.623319] ? tcp_v4_md5_lookup+0x22/0x30 [ 28.627524] ? tcp_established_options+0x2c5/0x420 [ 28.632427] ? iov_iter_copy_from_user_atomic+0xe30/0xe30 [ 28.637934] __tcp_push_pending_frames+0xa0/0x250 [ 28.642747] tcp_push+0x538/0x770 [ 28.646175] ? tcp_splice_data_recv+0x1a0/0x1a0 [ 28.650817] ? skb_entail+0x5f6/0x8a0 [ 28.654587] ? iov_iter_advance+0x13f0/0x13f0 [ 28.659061] ? tcp_tx_timestamp+0x62/0x2a0 [ 28.663268] tcp_sendmsg_locked+0x2663/0x3b30 [ 28.667756] ? tcp_sendpage+0x60/0x60 [ 28.671530] ? rcu_read_lock_sched_held+0x108/0x120 [ 28.676515] ? __mark_inode_dirty+0x262/0x1170 [ 28.681071] ? print_irqtrace_events+0x270/0x270 [ 28.685793] ? find_held_lock+0x35/0x1d0 [ 28.689831] ? lock_sock_nested+0xa3/0x110 [ 28.694035] ? lock_acquire+0x1d5/0x580 [ 28.697981] ? tcp_sendmsg+0x21/0x50 [ 28.701672] ? mark_held_locks+0xaf/0x100 [ 28.705788] ? do_raw_spin_trylock+0x190/0x190 [ 28.710344] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.715339] ? lock_sock_nested+0x91/0x110 [ 28.719542] ? trace_hardirqs_on+0xd/0x10 [ 28.723657] ? __local_bh_enable_ip+0x121/0x230 [ 28.728304] tcp_sendmsg+0x2f/0x50 [ 28.731825] inet_sendmsg+0x11f/0x5e0 [ 28.735596] ? inet_recvmsg+0x5f0/0x5f0 [ 28.739543] ? selinux_socket_sendmsg+0x36/0x40 [ 28.744180] ? security_socket_sendmsg+0x89/0xb0 [ 28.748903] ? inet_recvmsg+0x5f0/0x5f0 [ 28.752937] sock_sendmsg+0xca/0x110 [ 28.756622] sock_write_iter+0x31a/0x5d0 [ 28.760652] ? sock_sendmsg+0x110/0x110 [ 28.764606] ? iov_iter_init+0xaf/0x1d0 [ 28.768553] __vfs_write+0x684/0x970 [ 28.772238] ? kernel_read+0x120/0x120 [ 28.776091] ? bpf_fd_pass+0x280/0x280 [ 28.779952] ? _cond_resched+0x14/0x30 [ 28.783812] ? selinux_file_permission+0x82/0x460 [ 28.788632] ? rw_verify_area+0xe5/0x2b0 [ 28.792660] ? __fdget_raw+0x20/0x20 [ 28.796346] vfs_write+0x189/0x510 [ 28.799859] SyS_write+0xef/0x220 [ 28.803282] ? SyS_read+0x220/0x220 [ 28.806878] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 28.811865] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.816597] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 28.821319] RIP: 0033:0x7f16b0aea370 [ 28.824998] RSP: 002b:00007ffcf75c9cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 28.832683] RAX: ffffffffffffffda RBX: 00007ffcf75c9dc0 RCX: 00007f16b0aea370 [ 28.839921] RDX: 0000000000000038 RSI: 000055c0663f8460 RDI: 0000000000000003 [ 28.847158] RBP: 000055c064f668dc R08: 0000000000000001 R09: 0101010101010101 [ 28.854398] R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffcf75c9dc8 [ 28.861635] R13: 0000000000000000 R14: 00007ffcf75c9db8 R15: 00007ffcf75c9dbc [ 28.868887] [ 28.870482] Allocated by task 3144: [ 28.874082] save_stack+0x43/0xd0 [ 28.877503] kasan_kmalloc+0xad/0xe0 [ 28.881184] __kmalloc_node_track_caller+0x47/0x70 [ 28.886082] __kmalloc_reserve.isra.41+0x41/0xd0 [ 28.890803] __alloc_skb+0x13b/0x780 [ 28.894484] sk_stream_alloc_skb+0x11d/0x900 [ 28.898861] tcp_sendmsg_locked+0x1341/0x3b30 [ 28.903325] tcp_sendmsg+0x2f/0x50 [ 28.906832] inet_sendmsg+0x11f/0x5e0 [ 28.910601] sock_sendmsg+0xca/0x110 [ 28.914282] sock_write_iter+0x31a/0x5d0 [ 28.918322] __vfs_write+0x684/0x970 [ 28.922005] vfs_write+0x189/0x510 [ 28.925518] SyS_write+0xef/0x220 [ 28.928941] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 28.933659] [ 28.935253] Freed by task 3144: [ 28.938501] save_stack+0x43/0xd0 [ 28.941919] kasan_slab_free+0x71/0xc0 [ 28.945772] kfree+0xd6/0x260 [ 28.948844] skb_free_head+0x74/0xb0 [ 28.952523] skb_release_data+0x58c/0x790 [ 28.956635] skb_release_all+0x4a/0x60 [ 28.960489] consume_skb+0x153/0x490 [ 28.964170] __dev_kfree_skb_any+0x85/0xa0 [ 28.968373] free_old_xmit_skbs.isra.27+0x15a/0x2c0 [ 28.973357] start_xmit+0x1b9/0x1650 [ 28.977039] dev_hard_start_xmit+0x248/0xac0 [ 28.981413] sch_direct_xmit+0x2e0/0x920 [ 28.985440] __qdisc_run+0x571/0x1930 [ 28.989217] __dev_queue_xmit+0x89e/0x2200 [ 28.993418] dev_queue_xmit+0x17/0x20 [ 28.997187] ip_finish_output2+0xec8/0x1460 [ 29.001473] ip_finish_output+0x85e/0xd10 [ 29.005586] ip_output+0x1cc/0x860 [ 29.009093] ip_local_out+0x95/0x160 [ 29.012776] ip_queue_xmit+0x8c0/0x18e0 [ 29.016717] tcp_transmit_skb+0x1b12/0x38b0 [ 29.021006] tcp_write_xmit+0x680/0x5190 [ 29.025040] __tcp_push_pending_frames+0xa0/0x250 [ 29.029849] tcp_push+0x538/0x770 [ 29.033269] tcp_sendmsg_locked+0x2663/0x3b30 [ 29.037734] tcp_sendmsg+0x2f/0x50 [ 29.041242] inet_sendmsg+0x11f/0x5e0 [ 29.045014] sock_sendmsg+0xca/0x110 [ 29.048702] sock_write_iter+0x31a/0x5d0 [ 29.052732] __vfs_write+0x684/0x970 [ 29.056410] vfs_write+0x189/0x510 [ 29.059915] SyS_write+0xef/0x220 [ 29.063420] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 29.068141] [ 29.069739] The buggy address belongs to the object at ffff8801c5867200 [ 29.069739] which belongs to the cache kmalloc-1024 of size 1024 [ 29.082536] The buggy address is located 0 bytes inside of [ 29.082536] 1024-byte region [ffff8801c5867200, ffff8801c5867600) [ 29.094290] The buggy address belongs to the page: [ 29.099188] page:00000000f14a38b8 count:1 mapcount:0 mapping:0000000033f193a4 index:0x0 compound_mapcount: 0 [ 29.109125] flags: 0x2fffc0000008100(slab|head) [ 29.113761] raw: 02fffc0000008100 ffff8801c5866000 0000000000000000 0000000100000007 [ 29.121610] raw: ffffea0007161820 ffffea0007165720 ffff8801dac00ac0 0000000000000000 [ 29.129454] page dumped because: kasan: bad access detected [ 29.135128] [ 29.136722] Memory state around the buggy address: [ 29.141617] ffff8801c5867100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.148953] ffff8801c5867180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.156281] >ffff8801c5867200: fb fb fb fb 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.163603] ^ [ 29.166935] ffff8801c5867280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.174260] ffff8801c5867300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.181586] ================================================================== [ 29.188910] Disabling lock debugging due to kernel taint [ 29.194323] Kernel panic - not syncing: panic_on_warn set ... [ 29.194323] [ 29.201651] CPU: 1 PID: 3144 Comm: sshd Tainted: G B 4.15.0-rc4-next-20171221+ #78 [ 29.210537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.219866] Call Trace: [ 29.222426] dump_stack+0x194/0x257 [ 29.226027] ? arch_local_irq_restore+0x53/0x53 [ 29.230662] ? kasan_end_report+0x32/0x50 [ 29.234779] ? lock_downgrade+0x980/0x980 [ 29.238892] ? vsnprintf+0x1ed/0x1900 [ 29.242661] panic+0x1e4/0x41c [ 29.245820] ? refcount_error_report+0x214/0x214 [ 29.250544] ? add_taint+0x40/0x50 [ 29.254050] ? add_taint+0x1c/0x50 [ 29.257557] ? skb_free_head+0x74/0xb0 [ 29.261409] ? skb_free_head+0x74/0xb0 [ 29.265266] kasan_end_report+0x50/0x50 [ 29.269205] kasan_report_double_free+0x72/0x80 [ 29.273840] kasan_slab_free+0xa3/0xc0 [ 29.277694] kfree+0xd6/0x260 [ 29.280767] skb_free_head+0x74/0xb0 [ 29.284447] skb_release_data+0x58c/0x790 [ 29.288567] ? skb_tx_error+0x2c0/0x2c0 [ 29.292507] ? check_noncircular+0x20/0x20 [ 29.296708] ? __lock_is_held+0xb6/0x140 [ 29.300741] skb_release_all+0x4a/0x60 [ 29.304595] consume_skb+0x153/0x490 [ 29.308276] ? alloc_skb_with_frags+0x750/0x750 [ 29.312913] ? virtqueue_get_buf_ctx+0x3b1/0x8b0 [ 29.317646] ? detach_buf+0x6a0/0x6a0 [ 29.321419] __dev_kfree_skb_any+0x85/0xa0 [ 29.325621] free_old_xmit_skbs.isra.27+0x15a/0x2c0 [ 29.330607] ? virtnet_cpu_down_prep+0x80/0x80 [ 29.335155] ? packet_rcv_fanout+0x7d0/0x7d0 [ 29.339533] ? dev_queue_xmit_nit+0x8af/0xc40 [ 29.343996] start_xmit+0x1b9/0x1650 [ 29.347685] ? virtnet_xdp+0x12a0/0x12a0 [ 29.351716] dev_hard_start_xmit+0x248/0xac0 [ 29.356094] ? validate_xmit_skb_list+0x120/0x120 [ 29.360903] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 29.366064] ? lock_acquire+0x1d5/0x580 [ 29.370002] ? lock_acquire+0x1d5/0x580 [ 29.373948] ? sch_direct_xmit+0x24d/0x920 [ 29.378148] ? skb_csum_hwoffload_help+0x57/0xa0 [ 29.382871] ? lock_release+0xa40/0xa40 [ 29.386811] ? netif_skb_features+0x8e0/0x8e0 [ 29.391275] ? mark_held_locks+0xaf/0x100 [ 29.395393] sch_direct_xmit+0x2e0/0x920 [ 29.399421] ? pfifo_fast_reset+0x490/0x490 [ 29.403721] __qdisc_run+0x571/0x1930 [ 29.407492] ? sch_direct_xmit+0x920/0x920 [ 29.411692] ? lock_release+0xa40/0xa40 [ 29.415637] ? rcu_lockdep_current_cpu_online+0x26/0x190 [ 29.421057] ? pfifo_fast_enqueue+0x2a0/0x420 [ 29.425521] __dev_queue_xmit+0x89e/0x2200 [ 29.429725] ? netdev_pick_tx+0x300/0x300 [ 29.433845] ? check_noncircular+0x20/0x20 [ 29.438047] ? lock_downgrade+0x980/0x980 [ 29.442167] ? lock_release+0xa40/0xa40 [ 29.446111] ? __lock_acquire+0x664/0x3e00 [ 29.450318] ? print_irqtrace_events+0x270/0x270 [ 29.455046] ? ip_finish_output+0x85e/0xd10 [ 29.459337] ? netlbl_catmap_setrng+0xb0/0xb0 [ 29.463803] ? mark_held_locks+0xaf/0x100 [ 29.467916] ? ip_finish_output2+0xca0/0x1460 [ 29.472378] dev_queue_xmit+0x17/0x20 [ 29.476143] ip_finish_output2+0xec8/0x1460 [ 29.480433] ? dst_output+0x140/0x140 [ 29.484200] ? __local_bh_enable_ip+0x121/0x230 [ 29.488837] ? ipt_do_table+0xdcd/0x13a0 [ 29.492863] ? __local_bh_enable_ip+0x121/0x230 [ 29.497504] ? ipv4_mtu+0x28c/0x3d0 [ 29.501102] ? __lock_is_held+0xb6/0x140 [ 29.505134] ip_finish_output+0x85e/0xd10 [ 29.509251] ? ip_finish_output+0x85e/0xd10 [ 29.513539] ? ip_fragment.constprop.49+0x200/0x200 [ 29.518531] ? iptable_mangle_hook+0xa9/0x550 [ 29.523008] ? nf_hook_slow+0xd3/0x1a0 [ 29.526871] ip_output+0x1cc/0x860 [ 29.530377] ? ip_mc_output+0x1340/0x1340 [ 29.534495] ? ip_fragment.constprop.49+0x200/0x200 [ 29.539480] ip_local_out+0x95/0x160 [ 29.543162] ip_queue_xmit+0x8c0/0x18e0 [ 29.547106] ? ip_build_and_send_pkt+0xc30/0xc30 [ 29.551831] ? refcount_dec_if_one+0x20/0x20 [ 29.556224] ? __tcp_v4_send_check+0x1b8/0x350 [ 29.560774] ? tcp_options_write+0x228/0x940 [ 29.565152] tcp_transmit_skb+0x1b12/0x38b0 [ 29.569445] ? bictcp_cong_avoid+0xf20/0xf20 [ 29.573818] ? __tcp_select_window+0x900/0x900 [ 29.578367] ? __kernel_text_address+0xd/0x40 [ 29.582829] ? __lock_acquire+0x664/0x3e00 [ 29.587049] ? tcp_small_queue_check.isra.26+0x31c/0x450 [ 29.592463] ? tcp_tso_segs+0x240/0x240 [ 29.596403] ? pvclock_read_flags+0x160/0x160 [ 29.600862] ? inet_sendmsg+0x11f/0x5e0 [ 29.604804] ? sock_sendmsg+0xca/0x110 [ 29.608654] ? sock_write_iter+0x31a/0x5d0 [ 29.612855] ? __vfs_write+0x684/0x970 [ 29.616706] ? vfs_write+0x189/0x510 [ 29.620386] ? SyS_write+0xef/0x220 [ 29.623981] ? entry_SYSCALL_64_fastpath+0x1f/0x96 [ 29.628879] ? sched_clock_cpu+0x1b/0x170 [ 29.632990] ? tcp_init_tso_segs+0x114/0x1f0 [ 29.637370] tcp_write_xmit+0x680/0x5190 [ 29.641413] ? rcu_read_lock_sched_held+0x58/0x120 [ 29.646329] ? tcp_transmit_skb+0x38b0/0x38b0 [ 29.650789] ? __asan_register_globals+0x90/0xa0 [ 29.655515] ? find_held_lock+0x35/0x1d0 [ 29.659546] ? __might_fault+0x110/0x1d0 [ 29.663574] ? iov_iter_advance+0x2a1/0x13f0 [ 29.667949] ? lock_release+0xa40/0xa40 [ 29.671888] ? tcp_v4_md5_lookup+0x22/0x30 [ 29.676090] ? tcp_established_options+0x2c5/0x420 [ 29.680987] ? iov_iter_copy_from_user_atomic+0xe30/0xe30 [ 29.686491] __tcp_push_pending_frames+0xa0/0x250 [ 29.691302] tcp_push+0x538/0x770 [ 29.694728] ? tcp_splice_data_recv+0x1a0/0x1a0 [ 29.699363] ? skb_entail+0x5f6/0x8a0 [ 29.703130] ? iov_iter_advance+0x13f0/0x13f0 [ 29.707593] ? tcp_tx_timestamp+0x62/0x2a0 [ 29.711796] tcp_sendmsg_locked+0x2663/0x3b30 [ 29.716269] ? tcp_sendpage+0x60/0x60 [ 29.720044] ? rcu_read_lock_sched_held+0x108/0x120 [ 29.725032] ? __mark_inode_dirty+0x262/0x1170 [ 29.729589] ? print_irqtrace_events+0x270/0x270 [ 29.734309] ? find_held_lock+0x35/0x1d0 [ 29.738340] ? lock_sock_nested+0xa3/0x110 [ 29.742538] ? lock_acquire+0x1d5/0x580 [ 29.746477] ? tcp_sendmsg+0x21/0x50 [ 29.750576] ? mark_held_locks+0xaf/0x100 [ 29.754690] ? do_raw_spin_trylock+0x190/0x190 [ 29.759241] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.764226] ? lock_sock_nested+0x91/0x110 [ 29.768428] ? trace_hardirqs_on+0xd/0x10 [ 29.772552] ? __local_bh_enable_ip+0x121/0x230 [ 29.777192] tcp_sendmsg+0x2f/0x50 [ 29.780701] inet_sendmsg+0x11f/0x5e0 [ 29.784469] ? inet_recvmsg+0x5f0/0x5f0 [ 29.788410] ? selinux_socket_sendmsg+0x36/0x40 [ 29.793044] ? security_socket_sendmsg+0x89/0xb0 [ 29.797765] ? inet_recvmsg+0x5f0/0x5f0 [ 29.801708] sock_sendmsg+0xca/0x110 [ 29.805389] sock_write_iter+0x31a/0x5d0 [ 29.809417] ? sock_sendmsg+0x110/0x110 [ 29.813363] ? iov_iter_init+0xaf/0x1d0 [ 29.817308] __vfs_write+0x684/0x970 [ 29.820990] ? kernel_read+0x120/0x120 [ 29.824844] ? bpf_fd_pass+0x280/0x280 [ 29.828709] ? _cond_resched+0x14/0x30 [ 29.832565] ? selinux_file_permission+0x82/0x460 [ 29.837377] ? rw_verify_area+0xe5/0x2b0 [ 29.841403] ? __fdget_raw+0x20/0x20 [ 29.845084] vfs_write+0x189/0x510 [ 29.848593] SyS_write+0xef/0x220 [ 29.852020] ? SyS_read+0x220/0x220 [ 29.855615] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.860600] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.865324] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 29.870051] RIP: 0033:0x7f16b0aea370 [ 29.873727] RSP: 002b:00007ffcf75c9cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 29.881400] RAX: ffffffffffffffda RBX: 00007ffcf75c9dc0 RCX: 00007f16b0aea370 [ 29.888635] RDX: 0000000000000038 RSI: 000055c0663f8460 RDI: 0000000000000003 [ 29.895872] RBP: 000055c064f668dc R08: 0000000000000001 R09: 0101010101010101 [ 29.903111] R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffcf75c9dc8 [ 29.910350] R13: 0000000000000000 R14: 00007ffcf75c9db8 R15: 00007ffcf75c9dbc [ 29.918049] Dumping ftrace buffer: [ 29.921555] (ftrace buffer empty) [ 29.925230] Kernel Offset: disabled [ 29.928825] Rebooting in 86400 seconds..