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-5,10.128.0.57' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.696770] kasan: CONFIG_KASAN_INLINE enabled [ 32.697541] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.698524] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 32.699344] Dumping ftrace buffer: [ 32.699829] (ftrace buffer empty) [ 32.700323] Modules linked in: [ 32.700791] CPU: 0 PID: 3242 Comm: syzkaller202202 Not tainted 4.9.53-g379e3b2 #59 [ 32.701813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.703030] task: ffff8801cf296000 task.stack: ffff8801cc570000 [ 32.703826] RIP: 0010:[] [] sg_read+0xcc1/0x1400 [ 32.704908] RSP: 0018:ffff8801cc577bc0 EFLAGS: 00010246 [ 32.705627] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 000000000000000c [ 32.706576] RDX: 0000000000000000 RSI: 00000000000000a6 RDI: ffff8801cc458170 [ 32.707555] RBP: ffff8801cc577cd0 R08: 53054a2135708f0e R09: ffffed003a13c295 [ 32.708517] R10: 0000000000000005 R11: ffffed003a13c294 R12: 0000000000001000 [ 32.709523] R13: 0000000000000000 R14: ffff8801d09e1480 R15: ffff8801cc458140 [ 32.710476] FS: 000000000099a880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 32.711550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.712322] CR2: 00000000209f0000 CR3: 00000001caf1a000 CR4: 00000000001406f0 [ 32.713273] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.714225] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.715174] Stack: [ 32.715468] 00000000000000c3 ffff8801cc577c50 ffff8801cc458158 ffff8801000000a6 [ 32.716598] ffffffff81bd22c9 ffff8801cc458168 00000000000000ca ffff8801cc577cf0 [ 32.722457] ffff8801d1b87900 1ffff100398aef84 0000000020185f36 0000000020185f5a [ 32.730404] Call Trace: [ 32.732958] [] ? security_file_permission+0x89/0x1e0 [ 32.739678] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.746314] [] ? sg_ioctl+0x2af0/0x2af0 [ 32.751909] [] ? do_readv_writev+0x1f9/0x750 [ 32.757934] [] ? vfs_write+0x4e0/0x4e0 [ 32.763437] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.770066] [] __vfs_read+0x103/0x670 [ 32.775481] [] ? __kernel_write+0x340/0x340 [ 32.781417] [] ? fsnotify+0x86/0xf30 [ 32.786743] [] ? fsnotify+0xf30/0xf30 [ 32.792156] [] ? avc_policy_seqno+0x9/0x20 [ 32.798004] [] ? selinux_file_permission+0x82/0x460 [ 32.804634] [] ? security_file_permission+0x89/0x1e0 [ 32.811350] [] ? rw_verify_area+0xe5/0x2b0 [ 32.817197] [] vfs_read+0x107/0x330 [ 32.822436] [] SyS_read+0xd9/0x1b0 [ 32.827600] [] ? vfs_copy_file_range+0x680/0x680 [ 32.833973] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.840518] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 32.847058] 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 [ 32.873362] RIP [] sg_read+0xcc1/0x1400 [ 32.879063] RSP [ 32.882710] ---[ end trace 7cf9fc85dc1b8d23 ]--- [ 32.887475] Kernel panic - not syncing: Fatal exception [ 32.893208] Dumping ftrace buffer: [ 32.896718] (ftrace buffer empty) [ 32.900395] Kernel Offset: disabled [ 32.903986] Rebooting in 86400 seconds..