INIT: Entering runlevel: 2 [[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. 2018/03/30 02:11:35 parsed 1 programs 2018/03/30 02:11:35 executed programs: 0 syzkaller login: [ 26.976162] IPVS: Creating netns size=2536 id=1 [ 27.071335] ================================================================== [ 27.078725] BUG: KASAN: wild-memory-access in sg_read+0x12c5/0x1470 [ 27.085108] Read of size 184 at addr ffe70873f9521000 by task syz-executor0/3797 [ 27.092612] [ 27.094219] CPU: 1 PID: 3797 Comm: syz-executor0 Not tainted 4.9.91-gbb94f9d #8 [ 27.101644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.110973] ffff8801b51479b8 ffffffff81d95169 ffe70873f9521000 00000000000000b8 [ 27.118956] 0000000000000000 ffff8801d0572de0 ffff8801b510c340 ffff8801b5147a00 [ 27.126929] ffffffff8153da42 ffffffff8266be75 0000000000000286 c6affc4c0e519c74 [ 27.134900] Call Trace: [ 27.137461] [] dump_stack+0xc1/0x128 [ 27.142797] [] kasan_report+0x162/0x380 [ 27.148400] [] ? sg_read+0x12c5/0x1470 [ 27.153912] [] check_memory_region+0x137/0x190 [ 27.160117] [] kasan_check_read+0x11/0x20 [ 27.165886] [] sg_read+0x12c5/0x1470 [ 27.171223] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 27.177878] [] ? fsnotify+0x86/0xf30 [ 27.183214] [] ? fsnotify+0xf30/0xf30 [ 27.188638] [] ? avc_policy_seqno+0x9/0x20 [ 27.194503] [] do_loop_readv_writev.part.17+0xc8/0x2b0 [ 27.201412] [] compat_do_readv_writev+0x5ff/0x740 [ 27.207881] [] ? do_pwritev+0x1a0/0x1a0 [ 27.213482] [] ? exit_robust_list+0x230/0x230 [ 27.219605] [] ? __fget+0x20a/0x3b0 [ 27.224853] [] ? __fget+0x231/0x3b0 [ 27.230100] [] ? __fget+0x47/0x3b0 [ 27.235263] [] compat_readv+0xe3/0x150 [ 27.240775] [] do_compat_readv+0xf4/0x1d0 [ 27.246558] [] ? compat_readv+0x150/0x150 [ 27.252335] [] ? compat_SyS_clock_gettime+0x132/0x1a0 [ 27.259145] [] ? compat_SyS_clock_settime+0x180/0x180 [ 27.265960] [] ? compat_SyS_ioctl+0x8c/0x2050 [ 27.272079] [] compat_SyS_readv+0x26/0x30 [ 27.277848] [] ? SyS_pwritev2+0x80/0x80 [ 27.283444] [] do_fast_syscall_32+0x2f5/0x870 [ 27.289560] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.296200] [] entry_SYSENTER_compat+0x90/0xa2 [ 27.302401] ================================================================== [ 27.309728] Disabling lock debugging due to kernel taint [ 27.315773] Kernel panic - not syncing: panic_on_warn set ... [ 27.315773] [ 27.323137] CPU: 1 PID: 3797 Comm: syz-executor0 Tainted: G B 4.9.91-gbb94f9d #8 [ 27.331786] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.341118] ffff8801b51478d8 ffffffff81d95169 ffffffff84197d57 ffff8801b51479b0 [ 27.349097] 0000000000000000 ffff8801d0572de0 ffff8801b510c340 ffff8801b51479a0 [ 27.357073] ffffffff8142e7f1 0000000041b58ab3 ffffffff8418b7b0 ffffffff8142e635 [ 27.365046] Call Trace: [ 27.367625] [] dump_stack+0xc1/0x128 [ 27.372962] [] panic+0x1bc/0x3a8 [ 27.377958] [] ? percpu_up_read_preempt_enable.constprop.53+0xd7/0xd7 [ 27.386162] [] ? preempt_schedule+0x25/0x30 [ 27.392105] [] ? ___preempt_schedule+0x16/0x18 [ 27.398311] [] kasan_end_report+0x50/0x50 [ 27.404090] [] kasan_report+0x16b/0x380 [ 27.409687] [] ? sg_read+0x12c5/0x1470 [ 27.415200] [] check_memory_region+0x137/0x190 [ 27.421404] [] kasan_check_read+0x11/0x20 [ 27.427172] [] sg_read+0x12c5/0x1470 [ 27.432506] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 27.439177] [] ? fsnotify+0x86/0xf30 [ 27.444512] [] ? fsnotify+0xf30/0xf30 [ 27.449936] [] ? avc_policy_seqno+0x9/0x20 [ 27.455794] [] do_loop_readv_writev.part.17+0xc8/0x2b0 [ 27.462693] [] compat_do_readv_writev+0x5ff/0x740 [ 27.469155] [] ? do_pwritev+0x1a0/0x1a0 [ 27.474750] [] ? exit_robust_list+0x230/0x230 [ 27.480866] [] ? __fget+0x20a/0x3b0 [ 27.486112] [] ? __fget+0x231/0x3b0 [ 27.491359] [] ? __fget+0x47/0x3b0 [ 27.496524] [] compat_readv+0xe3/0x150 [ 27.502048] [] do_compat_readv+0xf4/0x1d0 [ 27.507829] [] ? compat_readv+0x150/0x150 [ 27.513602] [] ? compat_SyS_clock_gettime+0x132/0x1a0 [ 27.520427] [] ? compat_SyS_clock_settime+0x180/0x180 [ 27.527239] [] ? compat_SyS_ioctl+0x8c/0x2050 [ 27.533361] [] compat_SyS_readv+0x26/0x30 [ 27.539136] [] ? SyS_pwritev2+0x80/0x80 [ 27.544736] [] do_fast_syscall_32+0x2f5/0x870 [ 27.550852] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.557493] [] entry_SYSENTER_compat+0x90/0xa2 [ 27.564138] Dumping ftrace buffer: [ 27.567664] (ftrace buffer empty) [ 27.571366] Kernel Offset: disabled [ 27.574967] Rebooting in 86400 seconds..