[....] Starting enhanced syslogd: rsyslogd[ 10.431056] audit: type=1400 audit(1514310862.505:4): avc: denied { syslog } for pid=3167 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[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-android-49-kasan-gce-7,10.128.0.97' (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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 32.360388] random: crng init done [ 32.361959] kasan: CONFIG_KASAN_INLINE enabled [ 32.362604] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.373057] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 32.374807] Dumping ftrace buffer: [ 32.375572] (ftrace buffer empty) [ 32.376114] Modules linked in: [ 32.376621] CPU: 1 PID: 3327 Comm: syzkaller222723 Not tainted 4.9.71-g2506378 #113 [ 32.377753] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.377758] kasan: CONFIG_KASAN_INLINE enabled [ 32.377760] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.380723] task: ffff8801cb781800 task.stack: ffff8801c9390000 [ 32.386746] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 32.394975] RSP: 0018:ffff8801c93979b0 EFLAGS: 00010a07 [ 32.400392] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 32.407640] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 32.414878] RBP: ffff8801c93979c0 R08: 0000000000000001 R09: 0000000000000001 [ 32.422113] R10: 0000000000000000 R11: ffff8801cb781800 R12: 0000000000000004 [ 32.429350] R13: 0000000000000020 R14: ffff8801b6cc0000 R15: dffffc0000000000 [ 32.436587] FS: 0000000001140880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 32.444782] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.450629] CR2: 0000000020dc8000 CR3: 00000001c96ab000 CR4: 00000000001406e0 [ 32.457870] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.465106] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.472342] Stack: [ 32.474457] ffffffff838af9b9 ffff8801b6cc0158 ffff8801c9397a20 ffffffff82664e11 [ 32.482435] ffff8801b6cc0170 ffffed0036d9802b ffffed0036d9802e ffff8801b6cc0168 [ 32.490394] dead4ead00000000 ffff8801b6cc0140 0000000000000000 0000000000000000 [ 32.498347] Call Trace: [ 32.500902] [] ? retint_kernel+0x2d/0x2d [ 32.506580] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 32.513041] [] sg_finish_rem_req+0x2b5/0x340 [ 32.519064] [] sg_new_read.isra.20+0x356/0x3e0 [ 32.525261] [] ? sg_get_rq_mark+0x13d/0x190 [ 32.531202] [] sg_read+0x8bd/0x1440 [ 32.536447] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.543082] [] ? fsnotify+0xf30/0xf30 [ 32.548499] [] ? avc_policy_seqno+0x9/0x20 [ 32.554352] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 32.561333] [] ? security_file_permission+0x89/0x1e0 [ 32.568050] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.574685] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.581319] [] do_readv_writev+0x520/0x750 [ 32.587170] [] ? vfs_write+0x530/0x530 [ 32.592677] [] ? __pmd_alloc+0x410/0x410 [ 32.598357] [] ? __do_page_fault+0x5ec/0xd40 [ 32.604382] [] vfs_readv+0x84/0xc0 [ 32.609536] [] do_readv+0xe6/0x250 [ 32.614691] [] ? vfs_readv+0xc0/0xc0 [ 32.620020] [] ? entry_SYSCALL_64_fastpath+0x5/0xc6 [ 32.626652] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 32.633460] [] SyS_readv+0x27/0x30 [ 32.638617] [] entry_SYSCALL_64_fastpath+0x23/0xc6 executing program executing program [ 32.645161] 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 [ 32.671603] RIP [] __free_pages+0x21/0x80 [ 32.677483] RSP [ 32.681091] general protection fault: 0000 [#2] PREEMPT SMP KASAN [ 32.687285] kasan: CONFIG_KASAN_INLINE enabled [ 32.687287] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 32.699190] Dumping ftrace buffer: [ 32.702695] (ftrace buffer empty) [ 32.706373] Modules linked in: [ 32.709652] CPU: 0 PID: 3331 Comm: syzkaller222723 Tainted: G D 4.9.71-g2506378 #113 [ 32.718625] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.727947] task: ffff8801cb783000 task.stack: ffff8801c9170000 [ 32.733968] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 32.742201] RSP: 0018:ffff8801c91779b0 EFLAGS: 00010a07 [ 32.747615] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 32.754850] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 32.762090] RBP: ffff8801c91779c0 R08: 0000000000000001 R09: 0000000000000000 [ 32.769326] R10: 0000000000000000 R11: ffff8801cb783000 R12: 0000000000000004 [ 32.776562] R13: 0000000000000020 R14: ffff8801b6cea100 R15: dffffc0000000000 [ 32.783799] FS: 0000000001140880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 32.791989] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.797839] CR2: 0000000020dc8000 CR3: 00000001c96ac000 CR4: 00000000001406f0 [ 32.805077] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.812316] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.819551] Stack: [ 32.821667] ffffffff838af9b9 ffff8801b6cea258 ffff8801c9177a20 ffffffff82664e11 [ 32.829622] ffff8801b6cea270 ffffed0036d9d44b ffffed0036d9d44e ffff8801b6cea268 [ 32.837578] dead4ead00000000 ffff8801b6cea240 0000000000000000 0000000000000000 [ 32.845534] Call Trace: [ 32.848097] [] ? retint_kernel+0x2d/0x2d [ 32.853776] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 32.860233] [] sg_finish_rem_req+0x2b5/0x340 [ 32.866255] [] sg_new_read.isra.20+0x356/0x3e0 [ 32.872453] [] ? sg_get_rq_mark+0xcd/0x190 [ 32.878302] [] sg_read+0x8bd/0x1440 [ 32.883547] [] ? __check_object_size+0x174/0x3a9 [ 32.889919] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.896550] [] ? fsnotify+0xf30/0xf30 [ 32.901968] [] ? avc_policy_seqno+0x9/0x20 [ 32.907820] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 32.914798] [] ? security_file_permission+0x89/0x1e0 [ 32.921515] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.928148] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 32.934779] [] do_readv_writev+0x520/0x750 [ 32.940631] [] ? vfs_write+0x530/0x530 [ 32.946136] [] ? __pmd_alloc+0x410/0x410 [ 32.951813] [] ? __inode_security_revalidate+0xd9/0x130 [ 32.958794] [] ? __do_page_fault+0x319/0xd40 [ 32.964819] [] ? __do_page_fault+0x5ec/0xd40 [ 32.970842] [] vfs_readv+0x84/0xc0 [ 32.975999] [] do_readv+0xe6/0x250 [ 32.981158] [] ? vfs_readv+0xc0/0xc0 [ 32.986487] [] ? mm_fault_error+0x2c0/0x2c0 [ 32.992425] [] ? debug_locks_off+0x86/0xa0 [ 32.998283] [] SyS_readv+0x27/0x30 [ 33.003437] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 33.009977] 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 [ 33.036393] RIP [] __free_pages+0x21/0x80 [ 33.042274] RSP [ 33.045878] general protection fault: 0000 [#3] PREEMPT SMP KASAN [ 33.052103] Dumping ftrace buffer: [ 33.052634] kasan: CONFIG_KASAN_INLINE enabled [ 33.052636] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.067495] (ftrace buffer empty) [ 33.071171] Modules linked in: [ 33.074450] CPU: 1 PID: 3332 Comm: syzkaller222723 Tainted: G D 4.9.71-g2506378 #113 [ 33.083425] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.092747] task: ffff8801cb51e000 task.stack: ffff8801c9178000 [ 33.098768] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 33.106996] RSP: 0018:ffff8801c917f9b0 EFLAGS: 00010a07 [ 33.112409] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 33.119646] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 33.126883] RBP: ffff8801c917f9c0 R08: 0000000000000001 R09: 0000000000000000 [ 33.134120] R10: 0000000000000000 R11: ffff8801cb51e000 R12: 0000000000000004 [ 33.141357] R13: 0000000000000020 R14: ffff8801b6d08000 R15: dffffc0000000000 [ 33.148597] FS: 0000000001140880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 33.156790] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.162637] CR2: 0000000020dc8000 CR3: 00000001c938a000 CR4: 00000000001406e0 [ 33.169880] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.177117] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.184355] Stack: [ 33.186470] ffffffff838af9b9 ffff8801b6d08158 ffff8801c917fa20 ffffffff82664e11 [ 33.194427] ffff8801b6d08170 ffffed0036da102b ffffed0036da102e ffff8801b6d08168 [ 33.202383] dead4ead00000000 ffff8801b6d08140 0000000000000000 0000000000000000 [ 33.210351] Call Trace: [ 33.212907] [] ? retint_kernel+0x2d/0x2d [ 33.218595] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 33.225054] [] sg_finish_rem_req+0x2b5/0x340 [ 33.231078] [] sg_new_read.isra.20+0x356/0x3e0 [ 33.237274] [] ? sg_idr_max_id+0x12/0x60 [ 33.242950] [] sg_read+0x8bd/0x1440 [ 33.248194] [] ? __check_object_size+0x174/0x3a9 [ 33.254587] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 33.261309] [] ? fsnotify+0xf30/0xf30 [ 33.266726] [] ? avc_policy_seqno+0x9/0x20 [ 33.272582] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 33.279561] [] ? security_file_permission+0x89/0x1e0 [ 33.286283] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 33.292915] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 33.299549] [] do_readv_writev+0x520/0x750 [ 33.305403] [] ? vfs_write+0x530/0x530 [ 33.310909] [] ? __pmd_alloc+0x410/0x410 [ 33.316588] [] ? __inode_security_revalidate+0xd9/0x130 [ 33.323570] [] ? __do_page_fault+0x319/0xd40 [ 33.329594] [] ? __do_page_fault+0x5ec/0xd40 [ 33.335619] [] vfs_readv+0x84/0xc0 [ 33.340775] [] do_readv+0xe6/0x250 [ 33.345931] [] ? vfs_readv+0xc0/0xc0 [ 33.351260] [] ? mm_fault_error+0x2c0/0x2c0 [ 33.357199] [] ? debug_locks_off+0x86/0xa0 [ 33.363050] [] SyS_readv+0x27/0x30 [ 33.368213] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 33.374753] 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 [ 33.401196] RIP [] __free_pages+0x21/0x80 [ 33.407078] RSP [ 33.410681] general protection fault: 0000 [#4] PREEMPT SMP KASAN [ 33.412856] kasan: CONFIG_KASAN_INLINE enabled [ 33.412858] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.428763] Dumping ftrace buffer: [ 33.432268] (ftrace buffer empty) [ 33.435944] Modules linked in: [ 33.439220] CPU: 0 PID: 3326 Comm: syzkaller222723 Tainted: G D 4.9.71-g2506378 #113 [ 33.448192] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.457515] task: ffff8801cca26000 task.stack: ffff8801c93b8000 [ 33.463536] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 33.471765] RSP: 0018:ffff8801c93bf9b0 EFLAGS: 00010a07 [ 33.477180] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 33.484417] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 33.491654] RBP: ffff8801c93bf9c0 R08: 0000000000000001 R09: 0000000000000000 [ 33.498891] R10: 0000000000000000 R11: ffff8801cca26000 R12: 0000000000000004 [ 33.506129] R13: 0000000000000020 R14: ffff8801b6c4c200 R15: dffffc0000000000 [ 33.513368] FS: 0000000001140880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 33.521559] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.527406] CR2: 0000000020dc8000 CR3: 00000001c962f000 CR4: 00000000001406f0 [ 33.534648] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.541891] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.549129] Stack: [ 33.551247] ffffffff838af9b9 ffff8801b6c4c358 ffff8801c93bfa20 ffffffff82664e11 [ 33.559216] ffff8801b6c4c370 ffffed0036d8986b ffffed0036d8986e ffff8801b6c4c368 [ 33.567179] dead4ead00000000 ffff8801b6c4c340 0000000000000000 0000000000000000 [ 33.575142] Call Trace: [ 33.577696] [] ? retint_kernel+0x2d/0x2d [ 33.583376] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 33.589835] [] sg_finish_rem_req+0x2b5/0x340 [ 33.595864] [] sg_new_read.isra.20+0x356/0x3e0 [ 33.602069] [] ? sg_get_rq_mark+0xe5/0x190 [ 33.607919] [] sg_read+0x8bd/0x1440 [ 33.613163] [] ? __check_object_size+0x174/0x3a9 [ 33.619535] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 33.626170] [] ? fsnotify+0xf30/0xf30 [ 33.631589] [] ? avc_policy_seqno+0x9/0x20 [ 33.637441] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 33.644419] [] ? security_file_permission+0x89/0x1e0 [ 33.651136] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 33.657768] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 33.664401] [] do_readv_writev+0x520/0x750 [ 33.670251] [] ? vfs_write+0x530/0x530 [ 33.675755] [] ? __pmd_alloc+0x410/0x410 [ 33.681434] [] ? __inode_security_revalidate+0xd9/0x130 [ 33.688417] [] ? __do_page_fault+0x319/0xd40 [ 33.694443] [] ? __do_page_fault+0x5ec/0xd40 [ 33.700469] [] vfs_readv+0x84/0xc0 [ 33.705628] [] do_readv+0xe6/0x250 [ 33.710793] [] ? vfs_readv+0xc0/0xc0 [ 33.716124] [] ? mm_fault_error+0x2c0/0x2c0 [ 33.722064] [] ? debug_locks_off+0x86/0xa0 [ 33.727914] [] SyS_readv+0x27/0x30 [ 33.733072] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 33.739616] 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 [ 33.766070] RIP [] __free_pages+0x21/0x80 [ 33.771947] RSP [ 33.775554] general protection fault: 0000 [#5] PREEMPT SMP KASAN [ 33.781779] Dumping ftrace buffer: [ 33.785302] (ftrace buffer empty) [ 33.786888] kasan: CONFIG_KASAN_INLINE enabled [ 33.786891] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.800862] Modules linked in: [ 33.804141] CPU: 1 PID: 3329 Comm: syzkaller222723 Tainted: G D 4.9.71-g2506378 #113 [ 33.813116] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.822437] task: ffff8801cb786000 task.stack: ffff8801c9360000 [ 33.828457] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 33.836688] RSP: 0018:ffff8801c93679b0 EFLAGS: 00010a07 [ 33.842102] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 33.849339] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 33.856574] RBP: ffff8801c93679c0 R08: 0000000000000001 R09: 0000000000000000 [ 33.863810] R10: 0000000000000000 R11: ffff8801cb786000 R12: 0000000000000004 [ 33.871046] R13: 0000000000000020 R14: ffff8801b6cc2100 R15: dffffc0000000000 [ 33.878285] FS: 0000000001140880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 33.886478] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.892327] CR2: 0000000020dc8000 CR3: 00000001c9271000 CR4: 00000000001406e0 [ 33.899568] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.906804] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.914039] Stack: [ 33.916158] ffffffff838af9b9 ffff8801b6cc2258 ffff8801c9367a20 ffffffff82664e11 [ 33.924118] ffff8801b6cc2270 ffffed0036d9844b ffffed0036d9844e ffff8801b6cc2268 [ 33.932074] dead4ead00000000 ffff8801b6cc2240 0000000000000000 0000000000000000 [ 33.940032] Call Trace: [ 33.942587] [] ? retint_kernel+0x2d/0x2d [ 33.948266] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 33.954724] [] sg_finish_rem_req+0x2b5/0x340 [ 33.960747] [] sg_new_read.isra.20+0x356/0x3e0 [ 33.966943] [] ? sg_idr_max_id+0x10/0x60 [ 33.972618] [] sg_read+0x8bd/0x1440 [ 33.977860] [] ? __check_object_size+0x174/0x3a9 [ 33.984231] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 33.990862] [] ? fsnotify+0xf30/0xf30 [ 33.996280] [] ? avc_policy_seqno+0x9/0x20 [ 34.002132] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 34.009113] [] ? security_file_permission+0x89/0x1e0 [ 34.015830] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.022462] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.029096] [] do_readv_writev+0x520/0x750 [ 34.034948] [] ? vfs_write+0x530/0x530 [ 34.040452] [] ? __pmd_alloc+0x410/0x410 [ 34.046130] [] ? __inode_security_revalidate+0xd9/0x130 [ 34.053112] [] ? __do_page_fault+0x319/0xd40 [ 34.059137] [] ? __do_page_fault+0x5ec/0xd40 [ 34.065160] [] vfs_readv+0x84/0xc0 [ 34.070317] [] do_readv+0xe6/0x250 [ 34.075472] [] ? vfs_readv+0xc0/0xc0 [ 34.080800] [] ? mm_fault_error+0x2c0/0x2c0 [ 34.086739] [] ? debug_locks_off+0x86/0xa0 [ 34.092591] [] SyS_readv+0x27/0x30 [ 34.097748] [] entry_SYSCALL_64_fastpath+0x23/0xc6 executing program [ 34.104290] 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 [ 34.130705] RIP [] __free_pages+0x21/0x80 [ 34.136585] RSP [ 34.140187] general protection fault: 0000 [#6] PREEMPT SMP KASAN [ 34.144223] kasan: CONFIG_KASAN_INLINE enabled [ 34.144225] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.158271] Dumping ftrace buffer: [ 34.161775] (ftrace buffer empty) [ 34.165450] Modules linked in: [ 34.168728] CPU: 0 PID: 3328 Comm: syzkaller222723 Tainted: G D 4.9.71-g2506378 #113 [ 34.177700] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.187022] task: ffff8801cb784800 task.stack: ffff8801c9398000 [ 34.193052] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 34.201283] RSP: 0018:ffff8801c939f9b0 EFLAGS: 00010a07 [ 34.206697] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 34.213932] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 34.221168] RBP: ffff8801c939f9c0 R08: 0000000000000001 R09: 0000000000000000 [ 34.228402] R10: 0000000000000000 R11: ffff8801cb784800 R12: 0000000000000004 [ 34.235638] R13: 0000000000000020 R14: ffff8801b6cec200 R15: dffffc0000000000 [ 34.242877] FS: 0000000001140880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.251070] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.256917] CR2: 0000000020dc8000 CR3: 00000001c92b9000 CR4: 00000000001406f0 [ 34.264155] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.271392] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.278626] Stack: [ 34.280740] ffffffff838af9b9 ffff8801b6cec358 ffff8801c939fa20 ffffffff82664e11 [ 34.288697] ffff8801b6cec370 ffffed0036d9d86b ffffed0036d9d86e ffff8801b6cec368 [ 34.296653] dead4ead00000000 ffff8801b6cec340 0000000000000000 0000000000000000 [ 34.304605] Call Trace: [ 34.307158] [] ? retint_kernel+0x2d/0x2d [ 34.312837] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 34.319295] [] sg_finish_rem_req+0x2b5/0x340 [ 34.325318] [] sg_new_read.isra.20+0x356/0x3e0 [ 34.331514] [] ? sg_get_rq_mark+0xcc/0x190 [ 34.337366] [] sg_read+0x8bd/0x1440 [ 34.342608] [] ? __check_object_size+0x174/0x3a9 [ 34.348977] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.355608] [] ? fsnotify+0xf30/0xf30 [ 34.361549] [] ? avc_policy_seqno+0x9/0x20 [ 34.367400] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 34.374380] [] ? security_file_permission+0x89/0x1e0 [ 34.381100] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.387730] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.394362] [] do_readv_writev+0x520/0x750 [ 34.400213] [] ? vfs_write+0x530/0x530 [ 34.405717] [] ? __pmd_alloc+0x410/0x410 [ 34.411396] [] ? __inode_security_revalidate+0xd9/0x130 [ 34.418376] [] ? __do_page_fault+0x319/0xd40 [ 34.424399] [] ? __do_page_fault+0x5ec/0xd40 [ 34.430424] [] vfs_readv+0x84/0xc0 [ 34.435581] [] do_readv+0xe6/0x250 [ 34.440734] [] ? vfs_readv+0xc0/0xc0 [ 34.446064] [] ? mm_fault_error+0x2c0/0x2c0 [ 34.452000] [] ? debug_locks_off+0x86/0xa0 [ 34.457852] [] SyS_readv+0x27/0x30 [ 34.463009] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 34.469552] 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 [ 34.496031] RIP [] __free_pages+0x21/0x80 [ 34.501908] RSP [ 34.505509] general protection fault: 0000 [#7] PREEMPT SMP KASAN [ 34.511739] Dumping ftrace buffer: [ 34.513434] kasan: CONFIG_KASAN_INLINE enabled [ 34.513435] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.527119] (ftrace buffer empty) [ 34.530797] Modules linked in: [ 34.534075] CPU: 1 PID: 3330 Comm: syzkaller222723 Tainted: G D 4.9.71-g2506378 #113 [ 34.543048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.552369] task: ffff8801cb780000 task.stack: ffff8801c9368000 [ 34.558390] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 34.566622] RSP: 0018:ffff8801c936f9b0 EFLAGS: 00010a07 [ 34.572039] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 34.579276] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 34.586514] RBP: ffff8801c936f9c0 R08: 0000000000000001 R09: 0000000000000000 [ 34.593753] R10: 0000000000000000 R11: ffff8801cb780000 R12: 0000000000000004 [ 34.600991] R13: 0000000000000020 R14: ffff8801b6d0a100 R15: dffffc0000000000 [ 34.608230] FS: 0000000001140880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 34.616420] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.622269] CR2: 0000000020dc8000 CR3: 00000001c8802000 CR4: 00000000001406e0 [ 34.629508] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.636746] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.643982] Stack: [ 34.646099] ffffffff838af9b9 ffff8801b6d0a258 ffff8801c936fa20 ffffffff82664e11 [ 34.654053] ffff8801b6d0a270 ffffed0036da144b ffffed0036da144e ffff8801b6d0a268 [ 34.662006] dead4ead00000000 ffff8801b6d0a240 0000000000000000 0000000000000000 [ 34.669970] Call Trace: [ 34.672529] [] ? retint_kernel+0x2d/0x2d [ 34.678208] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 34.684678] [] sg_finish_rem_req+0x2b5/0x340 [ 34.690702] [] sg_new_read.isra.20+0x356/0x3e0 [ 34.696898] [] ? sg_idr_max_id+0x13/0x60 [ 34.702574] [] sg_read+0x8bd/0x1440 [ 34.707817] [] ? __check_object_size+0x174/0x3a9 [ 34.714188] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.720824] [] ? fsnotify+0xf30/0xf30 [ 34.726240] [] ? avc_policy_seqno+0x9/0x20 [ 34.732090] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 34.739070] [] ? security_file_permission+0x89/0x1e0 [ 34.745791] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.752422] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 34.759054] [] do_readv_writev+0x520/0x750 [ 34.764906] [] ? vfs_write+0x530/0x530 [ 34.770413] [] ? __pmd_alloc+0x410/0x410 [ 34.776091] [] ? __inode_security_revalidate+0xd9/0x130 [ 34.783071] [] ? __do_page_fault+0x319/0xd40 [ 34.789094] [] ? __do_page_fault+0x5ec/0xd40 [ 34.795120] [] vfs_readv+0x84/0xc0 [ 34.800276] [] do_readv+0xe6/0x250 [ 34.805433] [] ? vfs_readv+0xc0/0xc0 [ 34.810763] [] ? mm_fault_error+0x2c0/0x2c0 [ 34.816701] [] SyS_readv+0x27/0x30 [ 34.821858] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 34.828400] 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 [ 34.854909] RIP [] __free_pages+0x21/0x80 [ 34.860789] RSP [ 34.864392] general protection fault: 0000 [#8] PREEMPT SMP KASAN [ 34.864757] ---[ end trace 96cb0ebf1771ce31 ]--- [ 34.864760] Kernel panic - not syncing: Fatal exception [ 34.880656] Dumping ftrace buffer: [ 34.884162] (ftrace buffer empty) [ 34.887843] Modules linked in: [ 34.891123] CPU: 0 PID: 3333 Comm: syzkaller222723 Tainted: G D 4.9.71-g2506378 #113 [ 34.900100] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.909424] task: ffff8801cb518000 task.stack: ffff8801c9330000 [ 34.915449] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 34.923682] RSP: 0018:ffff8801c93379b0 EFLAGS: 00010a07 [ 34.929099] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664deb [ 34.936338] RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c [ 34.943577] RBP: ffff8801c93379c0 R08: 0000000000000001 R09: 0000000000000000 [ 34.950816] R10: 0000000000000000 R11: ffff8801cb518000 R12: 0000000000000004 [ 34.958057] R13: 0000000000000020 R14: ffff8801c6518000 R15: dffffc0000000000 [ 34.965298] FS: 0000000001140880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.973492] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.979342] CR2: 0000000020dc8000 CR3: 00000001c9cf4000 CR4: 00000000001406f0 [ 34.986584] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.993821] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.001061] Stack: [ 35.003179] ffffffff838af9b9 ffff8801c6518158 ffff8801c9337a20 ffffffff82664e11 [ 35.011147] ffff8801c6518170 ffffed0038ca302b ffffed0038ca302e ffff8801c6518168 [ 35.019111] dead4ead00000000 ffff8801c6518140 0000000000000000 0000000000000000 [ 35.027078] Call Trace: [ 35.029633] [] ? retint_kernel+0x2d/0x2d [ 35.035315] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 35.041776] [] sg_finish_rem_req+0x2b5/0x340 [ 35.047803] [] sg_new_read.isra.20+0x356/0x3e0 [ 35.054005] [] ? sg_get_rq_mark+0xcb/0x190 [ 35.059859] [] sg_read+0x8bd/0x1440 [ 35.065115] [] ? __check_object_size+0x174/0x3a9 [ 35.071500] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 35.078136] [] ? fsnotify+0xf30/0xf30 [ 35.083556] [] ? avc_policy_seqno+0x9/0x20 [ 35.089413] [] do_loop_readv_writev.part.17+0x141/0x1e0 [ 35.096394] [] ? security_file_permission+0x89/0x1e0 [ 35.103118] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 35.109755] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 35.116389] [] do_readv_writev+0x520/0x750 [ 35.122252] [] ? vfs_write+0x530/0x530 [ 35.127759] [] ? __pmd_alloc+0x410/0x410 [ 35.133439] [] ? __inode_security_revalidate+0xd9/0x130 [ 35.140422] [] ? __do_page_fault+0x319/0xd40 [ 35.146449] [] ? __do_page_fault+0x5ec/0xd40 [ 35.152475] [] vfs_readv+0x84/0xc0 [ 35.157633] [] do_readv+0xe6/0x250 [ 35.162791] [] ? vfs_readv+0xc0/0xc0 [ 35.168123] [] ? mm_fault_error+0x2c0/0x2c0 [ 35.174063] [] ? debug_locks_off+0x86/0xa0 [ 35.179916] [] SyS_readv+0x27/0x30 [ 35.185075] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 35.191620] 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 [ 35.218181] RIP [] __free_pages+0x21/0x80 [ 35.224064] RSP [ 35.228117] Dumping ftrace buffer: [ 35.231633] (ftrace buffer empty) [ 35.235306] Kernel Offset: disabled [ 35.238899] Rebooting in 86400 seconds..