[....] Starting enhanced syslogd: rsyslogd[ 10.957643] audit: type=1400 audit(1516094897.185:4): avc: denied { syslog } for pid=3171 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[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.218' (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 syzkaller login: [ 27.091394] IPVS: Creating netns size=2536 id=1 [ 27.108943] IPVS: Creating netns size=2536 id=2 [ 27.129066] IPVS: Creating netns size=2536 id=3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.162255] IPVS: Creating netns size=2536 id=4 executing program executing program executing program executing program [ 27.195004] kasan: CONFIG_KASAN_INLINE enabled [ 27.201916] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.209939] IPVS: Creating netns size=2536 id=5 [ 27.223168] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.225795] kasan: CONFIG_KASAN_INLINE enabled [ 27.225797] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.241274] Dumping ftrace buffer: [ 27.244778] (ftrace buffer empty) [ 27.248453] Modules linked in: [ 27.251731] CPU: 1 PID: 3359 Comm: syzkaller106633 Not tainted 4.9.76-g8dec074 #23 [ 27.259401] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.268727] task: ffff8801c9579800 task.stack: ffff8801c8190000 [ 27.274746] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 27.282984] RSP: 0018:ffff8801c8197990 EFLAGS: 00010a07 [ 27.288396] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266642b [ 27.295634] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 27.302869] RBP: ffff8801c81979a0 R08: 0000000000080000 R09: ffffed0039190385 [ 27.310118] R10: 0000000000000005 R11: ffffed0039190384 R12: 0000000000000004 [ 27.317367] R13: 0000000000000020 R14: ffff8801c8ee4200 R15: dffffc0000000000 [ 27.324865] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f77bab40 [ 27.333057] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 27.338904] CR2: 0000000020e1b000 CR3: 00000001c8c2c000 CR4: 0000000000160670 [ 27.346151] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.353402] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.360638] Stack: [ 27.362752] ffffffff838b15a9 ffff8801c8ee4358 ffff8801c8197a00 ffffffff82666451 [ 27.370697] ffff8801c8ee4370 ffffed00391dc86b ffffed00391dc86e ffff8801c8ee4368 [ 27.378645] dead4ead00000000 ffff8801c8ee4340 0000000000000000 0000000000000000 [ 27.386592] Call Trace: [ 27.389150] [] ? retint_kernel+0x2d/0x2d [ 27.394827] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 27.401290] [] sg_finish_rem_req+0x2b5/0x340 [ 27.407312] [] sg_read+0xa1c/0x1440 [ 27.412553] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 27.419183] [] ? fsnotify+0xf30/0xf30 [ 27.424604] [] ? avc_policy_seqno+0x9/0x20 [ 27.430461] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 27.437443] [] ? security_file_permission+0x89/0x1e0 [ 27.444157] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 27.450788] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 27.457419] [] compat_do_readv_writev+0x522/0x760 [ 27.463881] [] ? do_pwritev+0x1a0/0x1a0 [ 27.469481] [] ? _raw_spin_unlock+0x2c/0x50 [ 27.475428] [] ? check_preemption_disabled+0x3b/0x200 [ 27.482246] [] ? __fget+0x201/0x3a0 [ 27.487734] [] ? __fget+0x228/0x3a0 [ 27.492994] [] ? __fget+0x47/0x3a0 [ 27.498153] [] compat_readv+0xe3/0x150 [ 27.503654] [] do_compat_readv+0xf4/0x1d0 [ 27.509417] [] ? compat_readv+0x150/0x150 [ 27.515273] [] compat_SyS_readv+0x26/0x30 [ 27.521035] [] ? SyS_pwritev2+0x80/0x80 [ 27.526636] [] do_fast_syscall_32+0x2f7/0x890 [ 27.532746] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.539377] [] entry_SYSENTER_compat+0x74/0x83 executing program [ 27.545570] Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d [ 27.571972] RIP [] __free_pages+0x21/0x80 [ 27.577853] RSP [ 27.581466] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 27.587319] kasan: CONFIG_KASAN_INLINE enabled [ 27.587320] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.599580] Dumping ftrace buffer: [ 27.603101] (ftrace buffer empty) [ 27.606780] Modules linked in: [ 27.610060] CPU: 0 PID: 3364 Comm: syzkaller106633 Tainted: G D 4.9.76-g8dec074 #23 [ 27.618942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.628260] task: ffff8801cafa4800 task.stack: ffff8801c8258000 [ 27.634278] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 27.642509] RSP: 0018:ffff8801c825f940 EFLAGS: 00010a07 [ 27.647924] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266642b [ 27.655158] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 27.662391] RBP: ffff8801c825f950 R08: 0000000048000000 R09: 0000000000001e30 [ 27.669625] R10: 0000000000002100 R11: ffff8801cafa4800 R12: 0000000000000004 [ 27.676865] R13: 0000000000000020 R14: ffff8801c08ec200 R15: dffffc0000000000 [ 27.684102] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f77dbb40 [ 27.692384] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 27.698228] CR2: 0000000020a13000 CR3: 00000001c87b0000 CR4: 0000000000160670 [ 27.705472] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.712707] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.719942] Stack: [ 27.722058] 0000000000000001 ffff8801c08ec358 ffff8801c825f9b0 ffffffff82666451 [ 27.730008] ffff8801c08ec370 ffffed003811d86b ffffed003811d86e ffff8801c08ec368 [ 27.737976] dead4ead00000000 ffff8801c08ec340 0000000000000000 0000000000000000 [ 27.746022] Call Trace: [ 27.748597] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 27.755060] [] sg_finish_rem_req+0x2b5/0x340 [ 27.761090] [] sg_new_read.isra.20+0x18d/0x3e0 [ 27.767284] [] sg_read+0x8bd/0x1440 [ 27.772526] [] ? kasan_unpoison_shadow+0x35/0x50 [ 27.779002] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 27.785646] [] ? fsnotify+0xf30/0xf30 [ 27.791060] [] ? avc_policy_seqno+0x9/0x20 [ 27.796921] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 27.803907] [] ? security_file_permission+0x89/0x1e0 [ 27.810630] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 27.817258] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 27.823895] [] compat_do_readv_writev+0x522/0x760 [ 27.830352] [] ? do_pwritev+0x1a0/0x1a0 [ 27.835943] [] ? _raw_spin_unlock+0x2c/0x50 [ 27.841877] [] ? __fget+0x47/0x3a0 [ 27.847030] [] ? __fget+0x201/0x3a0 [ 27.852270] [] ? __fget+0x228/0x3a0 [ 27.857560] [] ? __fget+0x47/0x3a0 [ 27.862717] [] ? kasan_slab_free+0x88/0xc0 [ 27.868565] [] compat_readv+0xe3/0x150 [ 27.874080] [] do_compat_readv+0xf4/0x1d0 [ 27.879841] [] ? compat_readv+0x150/0x150 [ 27.885609] [] compat_SyS_readv+0x26/0x30 [ 27.891382] [] ? SyS_pwritev2+0x80/0x80 [ 27.896970] [] do_fast_syscall_32+0x2f7/0x890 [ 27.903076] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.909704] [] entry_SYSENTER_compat+0x74/0x83 [ 27.915895] Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d [ 27.942235] RIP [] __free_pages+0x21/0x80 executing program [ 27.948114] RSP [ 27.951716] general protection fault: 0000 [#3] PREEMPT SMP KASAN [ 27.956747] kasan: CONFIG_KASAN_INLINE enabled [ 27.956749] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.970944] Dumping ftrace buffer: [ 27.974448] (ftrace buffer empty) [ 27.978125] Modules linked in: [ 27.981397] CPU: 1 PID: 3347 Comm: syzkaller106633 Tainted: G D 4.9.76-g8dec074 #23 [ 27.991408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.000728] task: ffff8801c9c28000 task.stack: ffff8801c9c10000 [ 28.007007] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 28.015227] RSP: 0018:ffff8801c9c17940 EFLAGS: 00010a07 [ 28.020645] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266642b [ 28.027898] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 28.035136] RBP: ffff8801c9c17950 R08: 0000000048000000 R09: 0000000000001e30 [ 28.042376] R10: 0000000000002100 R11: ffff8801c9c28000 R12: 0000000000000004 [ 28.049609] R13: 0000000000000020 R14: ffff8801c09d4200 R15: dffffc0000000000 [ 28.057541] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f77dbb40 [ 28.065739] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 28.071585] CR2: 0000000020a13000 CR3: 00000001c92c0000 CR4: 0000000000160670 [ 28.078820] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.086054] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.093564] Stack: [ 28.095678] 0000000000000001 ffff8801c09d4358 ffff8801c9c179b0 ffffffff82666451 [ 28.103690] ffff8801c09d4370 ffffed003813a86b ffffed003813a86e ffff8801c09d4368 [ 28.111629] dead4ead00000000 ffff8801c09d4340 0000000000000000 0000000000000000 [ 28.119603] Call Trace: [ 28.122161] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 28.128623] [] sg_finish_rem_req+0x2b5/0x340 [ 28.134645] [] sg_new_read.isra.20+0x18d/0x3e0 [ 28.140846] [] sg_read+0x8bd/0x1440 [ 28.146091] [] ? kasan_unpoison_shadow+0x35/0x50 [ 28.152459] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 28.159537] [] ? fsnotify+0xf30/0xf30 [ 28.165303] [] ? avc_policy_seqno+0x9/0x20 [ 28.171154] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 28.178668] [] ? security_file_permission+0x89/0x1e0 [ 28.185430] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 28.192319] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 28.198948] [] compat_do_readv_writev+0x522/0x760 [ 28.205409] [] ? do_pwritev+0x1a0/0x1a0 [ 28.210997] [] ? _raw_spin_unlock+0x2c/0x50 [ 28.217722] [] ? __fget+0x47/0x3a0 [ 28.222875] [] ? __fget+0x201/0x3a0 [ 28.228117] [] ? __fget+0x228/0x3a0 [ 28.233355] [] ? __fget+0x47/0x3a0 [ 28.238519] [] ? kasan_slab_free+0x88/0xc0 [ 28.244366] [] compat_readv+0xe3/0x150 [ 28.250214] [] do_compat_readv+0xf4/0x1d0 [ 28.255973] [] ? compat_readv+0x150/0x150 [ 28.261740] [] compat_SyS_readv+0x26/0x30 [ 28.267847] [] ? SyS_pwritev2+0x80/0x80 [ 28.273435] [] do_fast_syscall_32+0x2f7/0x890 [ 28.279543] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.286180] [] entry_SYSENTER_compat+0x74/0x83 [ 28.292372] Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d [ 28.319585] RIP [] __free_pages+0x21/0x80 [ 28.325470] RSP [ 28.329075] general protection fault: 0000 [#4] PREEMPT SMP KASAN [ 28.335306] Dumping ftrace buffer: [ 28.338813] (ftrace buffer empty) [ 28.338872] ---[ end trace 2bb89f2f7d244de1 ]--- [ 28.338876] Kernel panic - not syncing: Fatal exception [ 28.352535] Modules linked in: [ 28.355814] CPU: 0 PID: 3371 Comm: syzkaller106633 Tainted: G D 4.9.76-g8dec074 #23 [ 28.364699] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.374026] task: ffff8801d491e000 task.stack: ffff8801c8368000 [ 28.380487] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 28.389161] RSP: 0018:ffff8801c836f940 EFLAGS: 00010a07 [ 28.394581] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266642b [ 28.401816] RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c [ 28.409061] RBP: ffff8801c836f950 R08: 0000000048000000 R09: 0000000000001e30 [ 28.416296] R10: 0000000000002100 R11: ffff8801d491e000 R12: 0000000000000004 [ 28.423531] R13: 0000000000000020 R14: ffff8801d487c200 R15: dffffc0000000000 [ 28.431895] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f77dbb40 [ 28.440084] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 28.445935] CR2: 0000000020a13000 CR3: 00000001c85f0000 CR4: 0000000000160670 [ 28.453181] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.461380] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.468619] Stack: [ 28.470733] 0000000000000001 ffff8801d487c358 ffff8801c836f9b0 ffffffff82666451 [ 28.479815] ffff8801d487c370 ffffed003a90f86b ffffed003a90f86e ffff8801d487c368 [ 28.487768] dead4ead00000000 ffff8801d487c340 0000000000000000 0000000000000000 [ 28.495713] Call Trace: [ 28.498270] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 28.504728] [] sg_finish_rem_req+0x2b5/0x340 [ 28.510752] [] sg_new_read.isra.20+0x18d/0x3e0 [ 28.516948] [] sg_read+0x8bd/0x1440 [ 28.522453] [] ? kasan_unpoison_shadow+0x35/0x50 [ 28.528836] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 28.535583] [] ? fsnotify+0xf30/0xf30 [ 28.541362] [] ? avc_policy_seqno+0x9/0x20 [ 28.547476] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 28.554713] [] ? security_file_permission+0x89/0x1e0 [ 28.561525] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 28.568159] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 28.574876] [] compat_do_readv_writev+0x522/0x760 [ 28.581348] [] ? do_pwritev+0x1a0/0x1a0 [ 28.587736] [] ? _raw_spin_unlock+0x2c/0x50 [ 28.593675] [] ? __fget+0x47/0x3a0 [ 28.598833] [] ? __fget+0x201/0x3a0 [ 28.604072] [] ? __fget+0x228/0x3a0 [ 28.609319] [] ? __fget+0x47/0x3a0 [ 28.614474] [] compat_readv+0xe3/0x150 [ 28.619993] [] do_compat_readv+0xf4/0x1d0 [ 28.625788] [] ? compat_readv+0x150/0x150 [ 28.631560] [] compat_SyS_readv+0x26/0x30 [ 28.637323] [] ? SyS_pwritev2+0x80/0x80 [ 28.642911] [] do_fast_syscall_32+0x2f7/0x890 [ 28.650151] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.656782] [] entry_SYSENTER_compat+0x74/0x83 [ 28.662982] Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d [ 28.690984] RIP [] __free_pages+0x21/0x80 [ 28.697810] RSP [ 28.701436] Dumping ftrace buffer: [ 28.704976] (ftrace buffer empty) [ 28.709093] Kernel Offset: disabled [ 28.712687] Rebooting in 86400 seconds..