[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 12.345416] audit: type=1400 audit(1514175610.569:6): avc: denied { map } for pid=3129 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-next-kasan-gce-0,10.128.15.246' (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 syzkaller login: [ 30.098466] audit: type=1400 audit(1514175628.322:7): avc: denied { map } for pid=3147 comm="syzkaller009428" path="/root/syzkaller009428137" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.184161] audit: type=1400 audit(1514175628.322:8): avc: denied { map } for pid=3151 comm="syzkaller009428" path="/dev/usbmon0" dev="devtmpfs" ino=8888 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usbmon_device_t:s0 tclass=chr_file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.369060] page:00000000f970c3f5 count:0 mapcount:0 mapping: (null) index:0x0 [ 33.390839] flags: 0x2fffc0000000000() [ 33.403312] page:0000000087fecbc6 count:0 mapcount:0 mapping: (null) index:0x0 [ 33.403321] flags: 0x2fffc0000000000() [ 33.403330] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 33.403338] raw: ffff8801db22ff60 ffffea0006ede7e0 0000000000000000 0000000000000000 [ 33.403342] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 33.403465] ------------[ cut here ]------------ [ 33.403469] kernel BUG at ./include/linux/mm.h:844! [ 33.403481] invalid opcode: 0000 [#1] SMP KASAN [ 33.403485] Dumping ftrace buffer: [ 33.403488] (ftrace buffer empty) [ 33.403490] Modules linked in: [ 33.403499] CPU: 1 PID: 3158 Comm: syzkaller009428 Not tainted 4.15.0-rc4-next-20171221+ #78 [ 33.403503] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.403515] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 33.403519] RSP: 0018:ffff8801c971f510 EFLAGS: 00010203 [ 33.403525] RAX: 0000000000000000 RBX: 1ffff100392e3ea4 RCX: 0000000000000000 [ 33.403529] RDX: 0000000000000000 RSI: 1ffff100390a454b RDI: ffffed00392e3e90 [ 33.403533] RBP: ffff8801c971f5e8 R08: 1ffff100392e3dc6 R09: 0000000000000000 [ 33.403536] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100392e3ea8 [ 33.403541] R13: dffffc0000000000 R14: ffff8801c971f840 R15: ffffea0006d51a80 [ 33.403546] FS: 00007f6fab424700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 33.403550] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.403554] CR2: 0000000020fb1000 CR3: 00000001c8c49004 CR4: 00000000001606e0 [ 33.403560] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.403564] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.403566] Call Trace: [ 33.403576] ? mon_alloc_buff+0x1a0/0x1a0 [ 33.403583] ? find_held_lock+0x35/0x1d0 [ 33.403605] __do_fault+0xeb/0x30f [ 33.403614] ? pte_offset_kernel+0xc7/0xc7 [ 33.403620] ? print_irqtrace_events+0x270/0x270 [ 33.403629] ? rb_insert_color_cached+0x1660/0x1660 [ 33.403641] ? rb_insert_color_cached+0x1660/0x1660 [ 33.403648] ? check_noncircular+0x20/0x20 [ 33.403661] __handle_mm_fault+0x1d8f/0x3ce0 [ 33.403673] ? __pmd_alloc+0x4e0/0x4e0 [ 33.403685] ? find_held_lock+0x35/0x1d0 [ 33.403698] ? handle_mm_fault+0x2a0/0x930 [ 33.403705] ? lock_downgrade+0x980/0x980 [ 33.403731] handle_mm_fault+0x38f/0x930 [ 33.403741] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 33.403749] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 33.403755] ? find_vma+0x30/0x150 [ 33.403769] __get_user_pages+0x50c/0x15f0 [ 33.403785] ? follow_page_mask+0x17f0/0x17f0 [ 33.403794] ? vma_link+0xe9/0x170 [ 33.403804] ? lock_acquire+0x1d5/0x580 [ 33.403809] ? lock_acquire+0x1d5/0x580 [ 33.403815] ? __mm_populate+0x2c7/0x450 [ 33.403827] ? lock_release+0xa40/0xa40 [ 33.403834] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 33.403845] ? rcu_note_context_switch+0x710/0x710 [ 33.403858] populate_vma_page_range+0x20e/0x2f0 [ 33.403874] ? get_user_pages_unlocked+0x4f0/0x4f0 [ 33.403879] ? vmacache_find+0x5f/0x280 [ 33.403884] ? vmacache_update+0xfe/0x130 [ 33.403893] ? find_vma+0x30/0x150 [ 33.403902] __mm_populate+0x23a/0x450 [ 33.403913] ? populate_vma_page_range+0x2f0/0x2f0 [ 33.403918] ? down_read_killable+0x180/0x180 [ 33.403928] ? security_mmap_file+0x143/0x180 [ 33.403943] vm_mmap_pgoff+0x241/0x280 [ 33.403956] ? vma_is_stack_for_current+0xa0/0xa0 [ 33.403964] ? lock_release+0xa40/0xa40 [ 33.403981] SyS_mmap_pgoff+0x462/0x5f0 [ 33.403992] ? find_mergeable_anon_vma+0xd0/0xd0 [ 33.404000] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 33.404012] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.404025] SyS_mmap+0x16/0x20 [ 33.404032] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 33.404037] RIP: 0033:0x44a559 [ 33.404040] RSP: 002b:00007f6fab423cd8 EFLAGS: 00000216 ORIG_RAX: 0000000000000009 [ 33.404047] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 000000000044a559 [ 33.404051] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 33.404054] RBP: 00000000006dbc20 R08: 000000000000015d R09: 0000000000000000 [ 33.404058] R10: 0000000000008011 R11: 0000000000000216 R12: 0000000000000000 [ 33.404062] R13: 00007fff68d77b4f R14: 00007f6fab4249c0 R15: 000000000000000b [ 33.404076] Code: 00 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 41 bc 02 00 00 00 eb bb e8 eb f2 96 fd 48 c7 c6 20 1f d1 85 4c 89 ff e8 8c b4 c0 fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 c7 f2 96 fd [ 33.404185] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c971f510 [ 33.404215] ---[ end trace 5f2b088277ec0b66 ]--- [ 33.404218] Kernel panic - not syncing: Fatal exception [ 33.404934] Dumping ftrace buffer: [ 33.404936] (ftrace buffer empty) [ 33.404939] Kernel Offset: disabled [ 33.850931] Rebooting in 86400 seconds..