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-kasan-gce-8,10.128.0.22' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   40.424400] ==================================================================
[   40.425572] BUG: KASAN: global-out-of-bounds in show_timer+0x278/0x2b0
[   40.426452] Read of size 8 at addr ffffffff85342a38 by task syzkaller838206/3087
[   40.427438] 
[   40.427673] CPU: 0 PID: 3087 Comm: syzkaller838206 Not tainted 4.15.0-rc1+ #205
[   40.428673] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.429925] Call Trace:
[   40.430293]  dump_stack+0x194/0x257
[   40.430788]  ? arch_local_irq_restore+0x53/0x53
[   40.431413]  ? show_regs_print_info+0x65/0x65
[   40.432035]  ? seq_printf+0xb3/0xe0
[   40.432527]  ? show_timer+0x278/0x2b0
[   40.433083]  print_address_description+0x178/0x250
[   40.433761]  ? show_timer+0x278/0x2b0
[   40.434275]  kasan_report+0x25b/0x340
[   40.434806]  __asan_report_load8_noabort+0x14/0x20
[   40.435464]  show_timer+0x278/0x2b0
[   40.435952]  ? timers_start+0x14c/0x1c0
[   40.436507]  seq_read+0x385/0x13d0
[   40.437000]  ? seq_lseek+0x3c0/0x3c0
[   40.437503]  ? selinux_file_permission+0x82/0x460
[   40.438153]  ? security_file_permission+0x89/0x1f0
[   40.438838]  ? rw_verify_area+0xe5/0x2b0
[   40.439389]  do_iter_read+0x3db/0x5b0
[   40.439905]  ? dup_iter+0x260/0x260
[   40.440497]  vfs_readv+0x121/0x1c0
[   40.440997]  ? compat_rw_copy_check_uvector+0x2e0/0x2e0
[   40.441715]  ? mm_fault_error+0x2c0/0x2c0
[   40.442276]  ? trace_event_raw_event_sched_switch+0x800/0x800
[   40.443063]  ? fget_raw+0x20/0x20
[   40.443544]  ? do_page_fault+0xee/0x720
[   40.444098]  do_preadv+0x11b/0x1a0
[   40.444579]  ? do_preadv+0x11b/0x1a0
[   40.448267]  SyS_preadv+0x30/0x40
[   40.451700]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   40.456447] RIP: 0033:0x440209
[   40.459605] RSP: 002b:00007ffe57d75688 EFLAGS: 00000217 ORIG_RAX: 0000000000000127
[   40.467285] RAX: ffffffffffffffda RBX: 00007ffe57d75690 RCX: 0000000000440209
[   40.474528] RDX: 0000000000000008 RSI: 0000000020508000 RDI: 0000000000000003
[   40.481766] RBP: 0000000000000000 R08: 65732f636f72702f R09: 65732f636f72702f
[   40.489004] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401ad0
[   40.496241] R13: 0000000000401b60 R14: 0000000000000000 R15: 0000000000000000
[   40.503505] 
[   40.505101] The buggy address belongs to the variable:
[   40.510348]  nstr.44443+0x18/0x40
[   40.513764] 
[   40.515358] Memory state around the buggy address:
[   40.520261]  ffffffff85342900: fa fa fa fa 00 06 fa fa fa fa fa fa 07 fa fa fa
[   40.527599]  ffffffff85342980: fa fa fa fa 05 fa fa fa fa fa fa fa 07 fa fa fa
[   40.534927] >ffffffff85342a00: fa fa fa fa 00 00 00 fa fa fa fa fa 00 fa fa fa
[   40.542254]                                         ^
[   40.547412]  ffffffff85342a80: fa fa fa fa 07 fa fa fa fa fa fa fa 00 00 00 00
[   40.554739]  ffffffff85342b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   40.562065] ==================================================================
[   40.569391] Disabling lock debugging due to kernel taint
[   40.574808] Kernel panic - not syncing: panic_on_warn set ...
[   40.574808] 
[   40.582138] CPU: 0 PID: 3087 Comm: syzkaller838206 Tainted: G    B            4.15.0-rc1+ #205
[   40.590873] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.600197] Call Trace:
[   40.602760]  dump_stack+0x194/0x257
[   40.606358]  ? arch_local_irq_restore+0x53/0x53
[   40.611011]  ? vprintk_default+0x28/0x30
[   40.615040]  ? vsnprintf+0x1ed/0x1900
[   40.618810]  ? show_timer+0x1e0/0x2b0
[   40.622583]  panic+0x1e4/0x41c
[   40.625746]  ? refcount_error_report+0x214/0x214
[   40.630482]  ? add_taint+0x40/0x50
[   40.633989]  ? add_taint+0x1c/0x50
[   40.637500]  ? show_timer+0x278/0x2b0
[   40.641275]  kasan_end_report+0x50/0x50
[   40.645217]  kasan_report+0x144/0x340
[   40.648986]  __asan_report_load8_noabort+0x14/0x20
[   40.653881]  show_timer+0x278/0x2b0
[   40.657487]  ? timers_start+0x14c/0x1c0
[   40.661447]  seq_read+0x385/0x13d0
[   40.664960]  ? seq_lseek+0x3c0/0x3c0
[   40.668645]  ? selinux_file_permission+0x82/0x460
[   40.673456]  ? security_file_permission+0x89/0x1f0
[   40.678355]  ? rw_verify_area+0xe5/0x2b0
[   40.682388]  do_iter_read+0x3db/0x5b0
[   40.686157]  ? dup_iter+0x260/0x260
[   40.689755]  vfs_readv+0x121/0x1c0
[   40.693266]  ? compat_rw_copy_check_uvector+0x2e0/0x2e0
[   40.698611]  ? mm_fault_error+0x2c0/0x2c0
[   40.702730]  ? trace_event_raw_event_sched_switch+0x800/0x800
[   40.708584]  ? fget_raw+0x20/0x20
[   40.712015]  ? do_page_fault+0xee/0x720
[   40.715967]  do_preadv+0x11b/0x1a0
[   40.719475]  ? do_preadv+0x11b/0x1a0
[   40.723156]  SyS_preadv+0x30/0x40
[   40.726577]  entry_SYSCALL_64_fastpath+0x1f/0x96
[   40.731301] RIP: 0033:0x440209
[   40.734470] RSP: 002b:00007ffe57d75688 EFLAGS: 00000217 ORIG_RAX: 0000000000000127
[   40.742148] RAX: ffffffffffffffda RBX: 00007ffe57d75690 RCX: 0000000000440209
[   40.749388] RDX: 0000000000000008 RSI: 0000000020508000 RDI: 0000000000000003
[   40.756624] RBP: 0000000000000000 R08: 65732f636f72702f R09: 65732f636f72702f
[   40.763871] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401ad0
[   40.771118] R13: 0000000000401b60 R14: 0000000000000000 R15: 0000000000000000
[   40.778411] Dumping ftrace buffer:
[   40.781922]    (ftrace buffer empty)
[   40.785602] Kernel Offset: disabled
[   40.789197] Rebooting in 86400 seconds..