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-android-49-kasan-gce-7,10.128.15.204' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.655758] sg_write: data in/out 2127708969/3 bytes for SCSI command 0xe3-- guessing data in; [ 42.655758] program syzkaller130161 not setting count and/or reply_len properly [ 42.659974] kasan: CONFIG_KASAN_INLINE enabled [ 42.660605] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.661584] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.662404] Dumping ftrace buffer: [ 42.662879] (ftrace buffer empty) [ 42.663378] Modules linked in: [ 42.663849] CPU: 0 PID: 3250 Comm: syzkaller130161 Not tainted 4.9.54-g34e23de #62 [ 42.664886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.666122] task: ffff8801d00d3000 task.stack: ffff8801d67f0000 [ 42.666920] RIP: 0010:[] [] sg_read+0xcc1/0x1400 [ 42.668012] RSP: 0018:ffff8801d67f7ac0 EFLAGS: 00010246 [ 42.668731] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000000c [ 42.669683] RDX: 0000000000000000 RSI: 0000000000000012 RDI: ffff8801d4f08170 [ 42.670647] RBP: ffff8801d67f7bc8 R08: 0000000000000000 R09: ffffed003a0ae241 [ 42.671601] R10: 0000000000000005 R11: ffffed003a0ae240 R12: 0000000000001000 [ 42.672554] R13: 0000000000000000 R14: ffff8801d05711e0 R15: ffff8801d4f08140 [ 42.673525] FS: 0000000001061880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 42.674619] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.675393] CR2: 0000000020477000 CR3: 00000001cc0ec000 CR4: 00000000001406f0 [ 42.679486] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.686725] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.693976] Stack: [ 42.696103] ffffea000759fdc0 ffff8801d67f7b18 ffff8801d4f08158 0000000000000012 [ 42.704068] ffff8801d67f7d50 ffff8801d4f08168 0000000000000036 0000000000000246 [ 42.712069] ffff8801d18b3900 1ffff1003acfef64 0000000020477000 0000000020477024 [ 42.720024] Call Trace: [ 42.722588] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 42.729223] [] ? fsnotify+0xf30/0xf30 [ 42.734644] [] ? avc_policy_seqno+0x9/0x20 [ 42.740495] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 42.747474] [] ? security_file_permission+0x89/0x1e0 [ 42.754192] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 42.760822] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 42.767454] [] do_readv_writev+0x520/0x750 [ 42.773302] [] ? vfs_write+0x4e0/0x4e0 [ 42.778901] [] ? __pmd_alloc+0x410/0x410 [ 42.784581] [] ? check_preemption_disabled+0x3b/0x200 [ 42.791391] [] ? __do_page_fault+0x322/0xd70 [ 42.797416] [] ? __do_page_fault+0x61a/0xd70 [ 42.803438] [] vfs_readv+0x84/0xc0 [ 42.808592] [] do_readv+0xe6/0x250 [ 42.813756] [] ? vfs_readv+0xc0/0xc0 [ 42.819086] [] ? mm_fault_error+0x2c0/0x2c0 [ 42.825032] [] SyS_readv+0x27/0x30 [ 42.830190] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 42.836731] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 19 07 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 06 00 00 48 8b 1b 48 85 db 0f 84 51 03 00 [ 42.863112] RIP [] sg_read+0xcc1/0x1400 [ 42.868817] RSP [ 42.872598] ---[ end trace 69fadc0aa7889571 ]--- [ 42.877323] Kernel panic - not syncing: Fatal exception [ 42.882992] Dumping ftrace buffer: [ 42.886502] (ftrace buffer empty) [ 42.890184] Kernel Offset: disabled [ 42.893780] Rebooting in 86400 seconds..