[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 12.247501] audit: type=1400 audit(1514087801.231:6): avc: denied { map } for pid=3133 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-kasan-gce-9,10.128.15.231' (ECDSA) to the list of known hosts. executing program executing program executing program syzkaller login: [ 18.440871] audit: type=1400 audit(1514087807.424:7): avc: denied { map } for pid=3147 comm="syzkaller579466" path="/root/syzkaller579466424" 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 [ 18.467648] audit: type=1400 audit(1514087807.451:8): avc: denied { map } for pid=3147 comm="syzkaller579466" path="/dev/usbmon0" dev="devtmpfs" ino=1144 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 [ 18.498901] page:00000000c7a3c62e count:0 mapcount:0 mapping: (null) index:0x0 [ 18.507229] flags: 0x2fffc0000000000() [ 18.511329] raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff [ 18.519224] raw: ffffea000725d9e0 ffffea00072b7160 0000000000000000 0000000000000000 [ 18.527121] page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0) [ 18.534211] ------------[ cut here ]------------ [ 18.538938] kernel BUG at ./include/linux/mm.h:844! [ 18.543967] invalid opcode: 0000 [#1] SMP KASAN [ 18.548613] Dumping ftrace buffer: [ 18.552115] (ftrace buffer empty) [ 18.555792] Modules linked in: [ 18.558957] CPU: 0 PID: 3148 Comm: syzkaller579466 Not tainted 4.15.0-rc4+ #236 [ 18.566365] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.575689] RIP: 0010:mon_bin_vma_fault+0x2f4/0x400 [ 18.580667] RSP: 0018:ffff8801c8ec7510 EFLAGS: 00010203 [ 18.585999] RAX: 0000000000000000 RBX: 1ffff100391d8ea4 RCX: 0000000000000000 [ 18.593240] RDX: 0000000000000000 RSI: 1ffff100391d8dee RDI: ffffed00391d8e90 [ 18.600474] RBP: ffff8801c8ec75e8 R08: 1ffff100391d8db0 R09: 0000000000000000 [ 18.607712] R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff100391d8ea8 [ 18.614949] R13: dffffc0000000000 R14: ffff8801c8ec7840 R15: ffffea0007355500 [ 18.622188] FS: 00007f3f356be700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 18.630378] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.636230] CR2: 00000000208be000 CR3: 00000001cedb0001 CR4: 00000000001606f0 [ 18.643467] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.650704] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.657938] Call Trace: [ 18.660495] ? mon_alloc_buff+0x1a0/0x1a0 [ 18.664618] ? find_held_lock+0x35/0x1d0 [ 18.668655] __do_fault+0xeb/0x30f [ 18.672161] ? vma_gap_callbacks_rotate+0x62/0x80 [ 18.676971] ? pte_offset_kernel+0xc7/0xc7 [ 18.681171] ? print_irqtrace_events+0x270/0x270 [ 18.685898] ? rb_insert_color_cached+0x1660/0x1660 [ 18.690888] ? vma_compute_subtree_gap+0x200/0x200 [ 18.695781] ? check_noncircular+0x20/0x20 [ 18.699983] __handle_mm_fault+0x1d8f/0x3ce0 [ 18.704357] ? __pmd_alloc+0x4e0/0x4e0 [ 18.708211] ? __save_stack_trace+0x7e/0xd0 [ 18.712501] ? find_held_lock+0x35/0x1d0 [ 18.716532] ? handle_mm_fault+0x248/0x8d0 [ 18.720733] ? lock_downgrade+0x980/0x980 [ 18.724873] handle_mm_fault+0x334/0x8d0 [ 18.728901] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 18.733448] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.739296] ? find_vma+0x30/0x150 [ 18.742804] __get_user_pages+0x50c/0x15f0 [ 18.747034] ? follow_page_mask+0x17f0/0x17f0 [ 18.751505] ? lock_acquire+0x1d5/0x580 [ 18.755442] ? lock_acquire+0x1d5/0x580 [ 18.759381] ? __mm_populate+0x2c7/0x450 [ 18.763418] ? lock_release+0xa40/0xa40 [ 18.767357] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 18.773208] ? rcu_note_context_switch+0x710/0x710 [ 18.778107] populate_vma_page_range+0x20e/0x2f0 [ 18.782828] ? get_user_pages+0xc0/0xc0 [ 18.786766] ? vmacache_find+0x5f/0x280 [ 18.790702] ? vmacache_update+0xfe/0x130 [ 18.794816] ? find_vma+0x30/0x150 [ 18.798322] __mm_populate+0x23a/0x450 [ 18.802179] ? populate_vma_page_range+0x2f0/0x2f0 [ 18.807073] ? down_read_killable+0x180/0x180 [ 18.811535] ? security_mmap_file+0x143/0x180 [ 18.816000] vm_mmap_pgoff+0x241/0x280 [ 18.819869] ? vma_is_stack_for_current+0xa0/0xa0 [ 18.824684] SyS_mmap_pgoff+0x462/0x5f0 [ 18.828625] ? find_mergeable_anon_vma+0xd0/0xd0 [ 18.833350] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 18.838341] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 18.843064] SyS_mmap+0x16/0x20 [ 18.846310] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 18.851032] RIP: 0033:0x449489 [ 18.854188] RSP: 002b:00007f3f356bdd98 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 18.861864] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000449489 [ 18.869101] RDX: 0000000001000004 RSI: 0000000000004000 RDI: 0000000020ac6000 [ 18.876337] RBP: 00000000006dac20 R08: 0000000000000010 R09: 0000000000000000 [ 18.883573] R10: 0000000000008011 R11: 0000000000000212 R12: 6361632f6376612f [ 18.890810] R13: 78756e696c65732f R14: 6273752f7665642f R15: 000000000000000d [ 18.898051] 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 3b bf a4 fd 48 c7 c6 c0 c0 70 85 4c 89 ff e8 2c a3 cd fd <0f> 0b 48 89 95 28 ff ff ff 48 89 85 30 ff ff ff e8 17 bf a4 fd [ 18.917923] RIP: mon_bin_vma_fault+0x2f4/0x400 RSP: ffff8801c8ec7510 [ 18.924456] ---[ end trace 462637edb2bf9542 ]--- [ 18.929442] Kernel panic - not syncing: Fatal exception [ 18.935193] Dumping ftrace buffer: [ 18.938702] (ftrace buffer empty) [ 18.942381] Kernel Offset: disabled [ 18.945975] Rebooting in 86400 seconds..